JP4660925B2 - Waste home appliance recycling system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a waste home appliance recycling treatment apparatus that sorts plastics and the like by water specific gravity from crushed materials obtained by crushing waste home appliances that have become waste.
[0002]
[Prior art]
  Conventionally, existing recyclers have recycled used home appliances with the processing flow shown in FIG. The processing flow will be described below.
[0003]
  After used household appliances are conveyed from the stock yard 1 to the crusher 3 by the supply device 2, they are crushed by the crusher 3, and iron is recovered from the crushed crushed material by the magnetic separator 4.
[0004]
  The crushed material after the iron is collected is sorted by a wind sorter 5 into a dust group and a non-ferrous group, in which plastic is the main component. The selected plastic dust group is a mixture of various plastics, rubber, and electric wires, and is dumped in a managed landfill or incinerated as dust. Further, the sorted non-ferrous group is separated by size with a sieve sorter 6. The relatively large non-ferrous group is sorted into aluminum and copper by the eddy current sorter 7, and the relatively small non-ferrous group is sorted into copper and aluminum by the specific gravity sorter 8.
[0005]
  As another method, there is a waste processing method and apparatus disclosed in Japanese Patent Laid-Open No. Hei 5-147040. This flow will be described with reference to FIG.
[0006]
  The material is conveyed from the stock yard 9 by the supply device 10, and the metal lump separating means 11 separates the metal lump such as a motor and a compressor. Next, the main body from which the metal lump is separated is crushed to a size of about 50 mm to 100 mm by the crusher 12, and the crushed material is separated from the foamed molding material such as urethane foam by the lightweight material separating means 13.
[0007]
  On the other hand, the separated metal lumps such as motors and compressors are cooled to a low temperature of −100 ° C. or lower by the cooling device 14, then crushed by the crusher 15, and the heavy waste discharged by the light material sorting means 13. And sent to the metal / non-ferrous separation process 16. In the metal / non-ferrous separation process 16, iron is collected by the magnetic sorter 17 and stainless steel is collected by the stainless steel sorter 18.
[0008]
  Next, the non-ferrous group sorted by the eddy current sorter 19 is sorted into three types of copper, aluminum, and other non-ferrous metals by a specific gravity sorter 20 using a magnetic fluid. Further, the plastic group after collecting the metal and non-ferrous is separated into wood and the like by the electrostatic separator 21 and sent to the plastic sorting step 22.
[0009]
  The plastic group cooled to about 0 to −60 ° C. by the cooling device 23 is crushed by the crusher 24, and the sieving sorter 25 has a high embrittlement point and most of the plastics are finely crushed. And a group of plastics with a small amount of vinyl chloride, which have become relatively large crushed materials. The fine crushed material is separated into the precipitated vinyl chloride and the other resin floating by the specific gravity separator 26 using the specific gravity liquid, and the other resin is separated into the water specific gravity separator together with the relatively large crushed plastic group. At 27, the resin is separated into an olefin resin, a styrene resin, and vinyl chloride.
[0010]
  As shown in FIG. 26, the water specific gravity sorter 27 has a specific gravity sorting tank and a collection tank 30 for vinyl chloride precipitation via a first tank 28 and a valve 29 for vinyl chloride precipitation, and a styrene resin sedimentation machine. A styrene-based resin recovery conveyor 33 via a second tank 31 and a valve 32 and an olefin-based resin recovery conveyor 34 on the downstream side are provided. The third tank 35 and the water storage tank 36 are communicated, and the bottom of the first tank 28 and the bottom of the second tank 30 are connected to the valve 29, the recovery conveyor 30, the valve 32, the recovery conveyor 33, and the receiving container 37, respectively. The water storage tank 36 communicates with the first tank 28 via a pump 38.
[0011]
  Next, the operation will be described. Of the olefin resin a, styrene resin b, and vinyl chloride resin c supplied to the water specific gravity sorter 27, the vinyl chloride resin c having a specific gravity of about 1.4 is the flow of circulating water. The styrene-based resin b having a specific gravity of about 1.05 is settled in the first tank 28 without being affected by the flow of the circulating water. It settles at the bottom of 31 and is collected by the collection conveyor 33. The olefin resin a having a specific gravity of about 0.91 and smaller than the specific gravity of water gradually moves to the downstream side by the flow of the circulating water and is collected by the conveyor 34.
[0012]
  In addition, FIG. 27 shows the configuration of a sewage treatment apparatus of a plastic water specific gravity sorting apparatus that has been performed by an existing plastic reclaimer. The basic structure of the plastic water specific gravity sorting apparatus is the same as that of the conventional example described above, and is omitted. Hereinafter, the configuration and operation of the wastewater treatment of the sorted water that has been used as the sewage will be described. As shown in FIG. 27, a sewage treatment wastewater path is constituted by the sand filter 39 and the ion exchange tower 40 through a drain valve (not shown) provided at the bottom of a water specific gravity sorter (not shown).
[0013]
  Next, the operation will be explained. In the plastic sorting operation, the sorted water includes metal powder and non-ferrous powder containing heavy metals that could not be separated before the raw material supply to the water specific gravity sorter (not shown), and the plastic surface during crushing. Metal powder containing heavy metal and non-ferrous powder adhering to the surface, dust and dirt such as mold in the case of washing machines are brought in, and the sorted water is immediately contaminated with metals such as heavy metal and iron, non-ferrous, mud, and mold.
[0014]
  Sorted water that has become sewage in this water specific gravity sorter (not shown) is filtered through a drainage valve (not shown) to remove undissolved contaminants by sand filter 39, and then ion exchange tower The treated water after removing metal ions such as heavy metals in an ionic state at 40 is drained, and water is newly replaced in a water specific gravity sorter (not shown).
[0015]
[Problems to be solved by the invention]
  However, in the first processing method shown in FIG. 24, plastic having a high material composition weight of household electrical appliances is landfilled or incinerated as dust. As a result, there is a big problem that a large amount of limited and valuable resources (fossil fuel) are wasted.
[0016]
  As a second problem, non-ferrous metal parts having a relatively large size can be crushed and then sorted into dust groups and non-ferrous metals by the wind power sorter 5. However, motors and compressors used in home appliances Since the copper wire and the internal wiring and power cord using the copper wire are easy to get entangled and light, the wind sorting device 5 that sorts crushed material of about 50 mm to 100 mm by wind picks up most of it into the dust group and is discarded. The Furthermore, some copper wires that have been wind-sorted on the non-ferrous metal side are crushed and finely cut, and the entanglement function of the sieve sorter 6 is reduced.
[0017]
  As a result, in most home appliances except for some home appliances that have heat exchangers, the copper used in the motor, internal wiring, and power cords occupies the most valuable copper. There is a problem that the recovery rate of the sieving machine is extremely low and the sieving function of the sieving sorter 6 is also obstructed.
[0018]
  Moreover, in order to select and collect the copper wire mixed in the dust by vibration separation, it is necessary to make the crushing size very fine. However, the dust group of home appliances has a problem that heat conduction is poor because the thermoplastic resin occupies most, and the thermoplastic resin melts and cannot be crushed by the heat during crushing.
[0019]
  Further, in the second treatment method shown in FIG. 25, since many of the crushed plastics have water repellency until they become familiar with water, the styrene resin b is mixed into the olefin resin a, and the conditions are appropriately set. However, the limit of the sorting accuracy was 95%. On the other hand, if the amount of plastic input to the water specific gravity sorter is increased in order to increase the processing capacity of the water specific gravity sorter, the plastics will overlap each other, and the material that should originally sink will be sandwiched between the floats. Sorting accuracy decreases.
[0020]
  Another way to increase the processing capacity is to increase the amount of plastic input to the water specific gravity sorter andButWhen the speed is increased, the overlap between the plastics is reduced, but since the polystyrene resin b rides on the flow of the circulating water and is mixed into the olefin resin a, the selection accuracy is significantly lowered.
[0021]
  As a result, a general-purpose polypropylene resin (olefin-based resin) that is used in a large amount in home appliances is converted into an oil or auxiliary material without being recycled as a polypropylene resin again.
[0022]
  Moreover, in order to remove vinyl chloride from the plastic group, there is a problem that a very expensive facility of cooling to about 0 to −60 ° C. by the cooling device 23 is necessary.
[0023]
  In addition, when a large amount of waste home appliance crushed material is sorted by the water specific gravity sorter 27, the sorted water is immediately soiled with metal powder and dirt adhering to the crushed material, and the plastic is re-contaminated with this dirty sorted water. In this case, when the selected polypropylene resin is re-pelletized, the metal catalyzes to cause thermal deterioration of the plastic or to oxidize and deteriorate during long-term use. In addition, the screen of the extruder when repellet is clogged, causing a problem in mass production.
[0024]
  However, the compact sewage treatment apparatus shown in FIG. 27 has a problem that the sewage treatment capacity is low in the filtration step and the ion exchange step, and cannot be applied to a closed system that circulates the sewage and the treated water to the water specific gravity separator 27. In other words, a closed system requires a large installation space and a large apparatus, which increases the recycling cost and is not realistic.
[0025]
  In addition, it is necessary to periodically replace the sand of the filter medium, and there is a problem that waste treatment including sand is indispensable after stabilization of heavy metals, despite recycling. In addition, there is a problem in that the ion exchange resin of the ion exchange tower must be periodically regenerated and the regeneration cost is increased.
[0026]
  Further, as the second problem, as in the first processing method, the crushed material of the internal wiring and the power cord is easily entangled and light, so the crushed material crushed to 50 mm to 100 mm is separated by the lightweight material separation device 13. Then, a considerable amount is mixed into the dust group and discarded. Also, copper wires such as motors and compressors and some internal wiring from the previous process and crushed power cords are sent to the metal separation process 16, but copper surfaces with extremely small surface areas other than copper lump and aluminum lump etc. Since it is extremely difficult to separate the non-ferrous metal with the eddy current sorter 19, there is a problem that the copper wire cannot be collected together with the plastic group and sent to the next process.
[0027]
  In addition, the motor and the compressor must be removed in advance by the metal lump separating means 11. Moreover, there is a problem that the cooling device 14 is a very expensive facility that is cooled to a low temperature of −100 ° C. or lower and is crushed by the crusher 15.
[0028]
  The present invention solves the above-mentioned conventional problems, and sorts out the water specific gravity of plastic crushed material from waste home appliances in large quantities, and again uses the most commonly used polypropylene resin (olefin-based resin) in home appliances as polypropylene again. To be able to select and collect polypropylene resin with a purity that can be recycled as a resin.EyesIt has been the target.
[0029]
[Means for Solving the Problems]
  In order to achieve the first object, the present invention uses a crushed product of waste home appliances or a feed material from a first material supply means for supplying crushed material and sorted water to a first water specific gravity sorting device. Then, the crushed material is sorted into at least two types of crushed materials, and among the crushed materials sorted into at least two types, the light weight material and the sorted water are separated into the second water specific gravity sorting device.A rotating drum having a rotation center axis in the vertical direction and containing the selected water inward; a cylinder provided on the rotation center axis of the rotating drum for supplying a mixture of light weight and selected water into the rotating drum; A recovery unit that is provided on the rotating shaft side of the rotating drum and outside the cylinder and collects crushed material floating in water by rotating the rotating drum, and rotates the rotating drum at a first predetermined rotation speed to surround the cylinder An air layer is generated, and crushed material floating in the water is collected on the rotating shaft side of the rotating drum, and the recovery machine is rotated at a second rotational speed higher than the first predetermined rotational speed, and crushed material floating in the water. Is recovered with a recovery machineIs.
[0030]
  This makes it possible to sort out the specific gravity of waste plastics from waste home appliances in large quantities, and to purify polypropylene resins with the purity that can be recycled as polypropylene resins again from general-purpose polypropylene resins (olefin-based resins) that are used most in home appliances. Can be collected and collected.
[0031]
DETAILED DESCRIPTION OF THE INVENTION
  The invention according to claim 1 of the present invention is the first raw material supply means for supplying the crushed material of the waste home appliances or the crushed material and the selected water, and the feedstock from the first raw material supply means. A first water specific gravity sorting device that sorts into at least two types of crushed materials based on a difference in specific gravity of the crushed material, and a first one that supplies light weight and sorted water to the subsequent process among the crushed materials sorted into the at least two types. A second water specific gravity sorter that sorts a crushed material that floats on the water and a crushed material that sinks in the water again by applying a centrifugal force to the lightweight material and the sorted water sent from the first feeding device.AndPrepared,The second water specific gravity sorting device includes a rotary drum having a rotation center axis in the vertical direction and containing the selected water inward, and a lightweight object provided on the rotation center axis of the rotation drum. A cylindrical body for supplying a mixture of sorted water, and a recovery device that is provided on the rotary shaft side of the rotary drum and outside the cylindrical body and collects crushed material floating in water by rotating the rotary drum. Rotating at a first predetermined rotational speed to generate an air layer around the cylinder, collecting the crushed material floating on the water on the rotating shaft side of the rotating drum, and then collecting the recovery machine at the first predetermined rotational speed. Rotate at a second rotational speed higher than the rotational speed, and collect the crushed material floating in the water with the recovery machineBecause the crushed material that sinks in the water is separated by the first water specific gravity sorting device, the absolute amount of crushed material that causes the plastic to overlap is reduced, and the water wettability of the plastic is also improved. In the first water specific gravity sorter, plastic that floats in water due to the water repellency of plastic, or that originally sinks into water due to the overlap of plastics, is almost the same as that in the second water specific gravity sorter in which centrifugal force acts. Completely separated. As a result, a large amount of plastic crushed material from waste home appliances is sorted, and a polypropylene resin with a purity that enables material recycling of the most widely used general-purpose polypropylene resin (olefin resin) as a polypropylene resin. Sorted and collected.
[0032]
  According to a second aspect of the present invention, there is provided the first water specific gravity sorting device according to the first aspect of the present invention.Contains copper wire or non-ferrous metalsHeavy specific gravityA first sorting tank that sorts out a specific gravity smaller than this heavy specific gravityMedium specific gravityA second sorting tank that sorts the first sorting tank is provided downstream of the first sorting tank.By supplying the crushed material after the iron is recovered from the crushed material of the waste home appliances in advance to the first water specific gravity separator, the heavy specific gravity in the crushed material is separated from the sorted water. Immediately sinks against the flow and settles in a water specific gravity sorting tank. In addition, the medium specific gravity sinks gradually while flowing in the flow of the selected water, and settles in the water specific gravity sorting tank of the medium specific gravity. Further, the light specific gravity floating in the water flows downstream and is supplied to the second water specific gravity sorting device. Therefore, the sediment can be sorted and recovered into a heavy specific gravity product and a medium specific gravity product. As a result, it is possible to easily sort and collect high-value copper wires and small pieces of aluminum without removing motors, compressors, power cords, internal wiring, and the like that use a lot of non-ferrous metals in advance.
[0033]
  The invention according to claim 3 is the invention according to claim 1 or 2, whereinFirst recovery means on the bottom side of the rotating drumA lightweight object supplied from the first water specific gravity separator or the third water specific gravity separator with the rotation center axis of the selected water formed in a substantially cylindrical shape in the rotary drum as the vertical direction When a mixture of (crushed material floating in water) and selected water is supplied from a cylindrical body provided on the rotation center shaft in the rotary drum, the specific gravity of water is greater than 1.0 in the supplied lightweight material. Light weight (originally crushed material that sinks in water) and light weight material (originally crushed material that floats on water) can be separated by centrifugal force in the rotation direction and by gravity in the vertical direction. Use the first recovery means on the bottom side of the rotating drum to rotateGetCan. Thereby, after roughly sorting with the first water specific gravity sorter or the first water specific gravity sorter and the third water specific gravity sorter, the second water specific gravity sorter is used to select the object to be sorted by centrifugal force and gravity. The first water specific gravity separator or the first water specific gravity separator and the third water specific gravity separator reduce the amount of the object to be sorted (easily into the water). Since the sinking object is removed), the sorting accuracy and processing capacity can be increased. In addition, during unsteady operation such as when the second water specific gravity sorting device is started or stopped, rotation imbalance due to the sorted water in the rotary drum and the sorting object can be prevented, and a large vibration damping device. In addition, a high-torque drive motor is not required, and the apparatus can be miniaturized, so that a simple and inexpensive waste home appliance recycling processing apparatus can be provided.
[0034]
  According to a fourth aspect of the present invention, in the first to third aspects of the present invention, at least two types of crushed materials may have a difference in specific gravity between the first water specific gravity sorting device and the second water specific gravity sorting device. One or more water specific gravity sorters that sort into crushed materialsPlaceProvided with a second supply means for supplying light weight and sorted water from the water specific gravity sorting device in the previous process to the water specific gravity sorting device in the next process, and the specific gravity of the first water specific gravity sorting device is 1. In spite of being larger than 0, the plastic surface is partially hydrophilized due to the water repellency of the plastic crushed material, as part of the styrene resin (medium specific gravity) mixed in the polypropylene resin group (light specific gravity) as a lightweight material. The second water specific gravity sorter which is gradually submerged and separated by at least one water specific gravity sorter (third to n th water specific gravity sorter) in the next step and is subjected to centrifugal force has reduced weight. Crushed material having a hydrophilic plastic surface is supplied. Accordingly, the plastics hardly overlap each other in the second water specific gravity sorting device on which the centrifugal force acts, and are separated instantaneously by G. As a result, higher purity polypropylene resin can be selected and recovered.
[0035]
  The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein an underwater crushing means is provided between the water specific gravity separators. Is supplied to the underwater crushing means, the lightweight material is crushed in the sorted water and the surface of the crushed material is washed. Therefore, by being finely crushed, the overlap between plastics and the entanglement of foreign matters are reduced, and the separation accuracy of the next process can be improved. Moreover, the contamination of the polypropylene resin selected and collected can be reduced. As a result, it is possible to select and collect a polypropylene resin with less contamination and high purity.
[0036]
  The invention according to claim 6 is the invention according to any one of claims 1 to 5, further comprising solid-liquid separation means for separating the crushed material recovered from the water specific gravity separator and the selected water, and the solid-liquid separation means Connected and provided with sorted water circulation means. When recovering the crushed material containing the sorted water selected from the water specific gravity sorter, the crushed material and the sorted water can be separated by the solid-liquid separation means. The sorted crushed material can be collected and the separated sorted water can be circulated to the water specific gravity sorting device via the sorted water circulation means. Thereby, continuous collection of the crushed material sorted from the water specific gravity sorter and the circulation balance of the selected water of the water specific gravity sorter can be achieved, and continuous sorting can be performed.
[0037]
  The invention according to claim 7 is the invention according to claim 6, wherein the solid-liquid separation means is supplied from a solid-liquid supply means for supplying a mixture of crushed material and sorted water, and the solid-liquid supply means. A solid-liquid separation / conveying means for separating the crushed material and the sorted water and conveying the crushed material separated from the sorted water, and a crushed material conveyed by the solid-liquid separation / conveying means.By pneumatic feedingSolid recovery means to recover;SaidSolid-liquid separation transport meansBottom ofProvided inIsCrushed materialAnd a net to separate the sorted waterWhen collecting crushed material containing sorted water selected from a water specific gravity sorterBreakThe crushed material and the sorted water can be separated, and the crushed material with less adherence of the sorted water can be recovered, and the separated sorted water can be circulated to the water specific gravity sorting device via the sorted water circulation means. As a result, an inexpensive solid-liquid separator can continuously collect the crushed material selected from the water specific gravity separator and circulate balance of the selected water in the water specific gravity separator. A resource processing apparatus can be provided.
[0038]
  The invention according to claim 8 is the invention according to claim 3 or 6, wherein at least the second recovery means or the solid-liquid separation means of the second specific gravity sorting device is a dehydration means at the next stage, This comprises a third recovery means for recovering the dewatered crushed material. At least the crushed material recovered from the second recovery means or the solid-liquid separation means is dehydrated by the subsequent dewatering means. do. Thereby, the dehydrated crushed material can be collected. In particular, since polypropylene resin hardly absorbs water, the dewatered crushed material can be immediately repellet processed (heated and melted).
[0039]
  The invention according to claim 9 is the invention according to claim 8, wherein in the next stage of the dewatering means, the wind-carrying means, the wind-selecting means, and the ultralight object separated by the wind-selecting means are collected. 3 is provided with a collection means, and after dewatering the crushed material by the dewatering means, the crushed material surface can be air-dried when the crushed material is transported to the wind sorting means by the wind power conveying means, such as a condenser film. After the foreign matter that cannot be removed in the previous process is separated by the wind power sorter, the superlight material can be recovered by the third recovery means. As a result, it is possible to obtain a polypropylene resin from which the condenser film or the like that clogs the screen of the extruder during re-pellet processing and reduces the productivity is removed.
[0040]
  According to a tenth aspect of the present invention, in the invention according to the ninth aspect, the wind power sorting means is connected to a substantially cylindrical cylindrical body having a substantially vertical central axis and a discharge portion at the upper end of the cylindrical body. And a third collection means for collecting ultra-lightweight materials, a sorted material discharge portion provided at the lower end portion of the cylindrical body for discharging light specific gravity, and a raw material provided in a lower portion of the cylindrical body in a substantially tangential direction obliquely upward. Is provided with a second raw material supply means that is pneumatically fed into the cylinder, and a spiral rising air flow is formed in the cylinder along the inner wall of the cylinder by the pressure-fed air. The inside of the cylinder has a higher peripheral speed from the central axis to the outer edge, and becomes a spiral rising air flow with a large centrifugal force. The crushed material supplied from the raw material supply means moves spirally by the spiral air flow, and the distance that the crushed material actually moves (distance that moves spirally) can be increased. Can reduce the overlap between the light specific gravity and the super light weight. And separation accuracy can be improved. Further, a centrifugal force in a substantially horizontal direction acts in the cylinder, and a force that separates the light specific gravity material and the ultralight material in the horizontal direction acts. Accordingly, the light specific gravity material moves outward due to the centrifugal force of the spiral flow, and the ultralight material has a small centrifugal force, so that it becomes the central axis side of the cylindrical body, so that the separation accuracy can be further improved.
[0041]
  The invention according to claim 11 is the invention according to claim 9 or 10, further comprising: a pumping means / wind supply means for supplying the wind of the crushed material and the wind power of the wind sorting means, and the pumping means / wind supply means. The one end is connected to the wind power supply side of the wind power sorting means, the other end is vented, and the upper portion of the wind power sorting means is connected to the pressure feeding / wind power supply means via a third recovery means. The air sorter is connected to the air intake port, and the inside of the wind sorting means is in a negative pressure state. The ultralight material is collected by the third collecting means through the upper part of the wind sorting means by the suction force of the pressure feeding means and the wind supply means. On the other hand, the light specific gravity is discharged from the lower part of the wind sorting means. At this time, since the inside of the wind power sorting means has a negative pressure, the outside air is sucked into the wind power sorting means from the lower part of the wind power sorting means. As a result, dust is scattered from the loop formed by the pressure feeding means / wind power supply means, the wind power sorting means, and the third recovery means by appropriately processing one end of the air vent of the pressure feeding means / wind power supply means. Can prevent.
[0042]
【Example】
  Embodiments of the present invention will be described below with reference to the drawings.
[0043]
  Example 1
  As shown in FIG. 1, the waste home appliance recycling processing device is a mixture of crushed material and sorted water to a conveyor 41 that supplies crushed material and a float / sink type water specific gravity sorter (first water specific gravity sorting device) 42. The first raw material supply section (first raw material supply means) 43 for supplying the water and the vertical centrifugal water specific gravity sorter (second water specific gravity sorter) 44 provided from the float / sink type water specific gravity sorter 42 to the first A first pump (first supply means) 46 for supplying a mixture of crushed material (lightweight material) floating in water and sorted water to the raw material supply unit (cylinder) 45 of 2 From the first recovery pipe (first recovery means) 47 provided in the water-type specific gravity sorter 44, the mixture of the crushed material submerged in the water and the sorted water, and the dehydrated liquid discharger 49 of the dehydrator 48. The sorted water through the water tank 50 provided with the stirrer 50a and the second pump 51 (sorted water circulation means). It has a configuration which is recycled to the first raw material supply unit 43 of the sink-float type water gravity sorter 42.
[0044]
  The float / sink water specific gravity sorter 42 includes a first sorting tank 52, a second sorting tank 53, a first screw conveyor 54 disposed in the first sorting tank 52, and a second sorting tank 53. And a screw type discharge device 57 provided in the discharge unit 56.
[0045]
  Further, in the vertical centrifugal water specific gravity sorter 44, as shown in detail in FIG. 2, the rotary drum 58 has a rotation center axis in the vertical direction, and is rotated via the belt 60 by the first drive motor 59. A second raw material supply unit (cylinder) 45 that rotates at several 2,000 r / min and supplies crushed material is provided on the rotation center axis of the rotary drum 58, and a lower discharge is provided near the bottom side wall of the rotary drum 58. A first recovery pipe (first recovery means) 47 is provided via the outlet 61.
[0046]
  A recovery mechanism (second recovery means) provided with an upper discharge port 62, a screw type recovery machine 63, and a dehydrator 48 on the rotation center axis side from the lower discharge port 61 is disposed above the rotating drum 58. ing. The screw type recovery machine 63 is rotated at a rotational speed of 2200 r / min via the belt 65, the drive shaft 66 and the belt 67 by the second drive motor 64, and is rotated at a higher speed by 200 r / min than the rotary drum 58. On the upper side wall side of the dehydrator 48, a transport duct 69 for transporting the crushed material by the blower 68 is provided.
[0047]
  The separated water 70 is accommodated inside the rotary drum 58, and the crushed material is selected (separated) based on a specific gravity of 1.0.
[0048]
  The operation in the above configuration will be described. First, the flow of water will be described. Sorted water in the float / sink type water specific gravity sorter 42 is sent from the second raw material supply unit 45 through the discharge unit 56 and the first pump 46 to the vertical centrifugal water specific gravity sort. The sorted water supplied to the machine 44 forms a substantially cylindrical separated water 70 in the vertical centrifugal water specific gravity sorter 44, and most of them are the lower outlet 61 and the first recovery pipe 47. In addition, a part of the sorted water (separated water) is supplied to the water storage tank 50 through the upper discharge port 62, the dehydrator 48, and the dehydrated liquid discharge unit 49.
[0049]
  The sorted water supplied to the water storage tank 50 is circulated by the second pump 51 through the first raw material supply unit 43 to the float / sink type water specific gravity sorter 42, and the first raw material supply unit 43 sorts the float / sink type water specific gravity. The sorted water supplied to the machine 42 flows and circulates to the discharge unit 57. At this time, the crushed material (plastic group) containing the remaining non-ferrous materials obtained by crushing used home appliances and collecting iron with a magnetic separator is supplied from the conveyor 41 to the first raw material supply unit 43 and mixed with the selected water. In this state, it flows into the float / sink type water specific gravity sorter 42.
[0050]
  Of the crushed material, the non-ferrous metals d and vinyl chloride resin c having a large specific gravity immediately sink to the bottom of the first sorting tank 52 and are collected by the first screw conveyor 54. Resin that sinks in water but approximates the specific gravity of water, such as styrene-based resin b, gradually sinks to the bottom of second sorting tank 53 while flowing in the flow of sorted water and is collected by second screw conveyor 55. Is done.
[0051]
  In addition, an olefin resin having a specific gravity of about 0.91 (the olefin resin of household electrical appliances is mostly a polypropylene resin, and will be referred to as a polypropylene resin hereinafter) a, and a part of the styrene resin b that should originally sink and electrolysis A part of the film of the condenser floats on the water due to water repellency and the sponges of the simultaneous foam are mixed with the sorted water from the discharge unit 56 via the screw type discharge device 57 on the flow of the selected water. In this state, the first pump 46 enters the rotary drum 58 through the second raw material supply unit 45 of the vertical centrifugal water specific gravity sorter 44.
[0052]
  At this time, since the rotating drum 58 rotates at a rotational speed of 2000 r / min, the separated water 70 is formed in a substantially cylindrical shape in the rotating drum 58, and a centrifugal force of about 800 G acts on the outer periphery of the separated water 70. The crushed material having a specific gravity of 1.0 or more is moved to the side wall side of the rotary drum 58 by centrifugal force, and the outlet 61 and the first crushed material mixed with the separated water (separated water 70) and the crushed material submerged in water The water is supplied to the water storage tank 50 through the recovery pipe 47. On the other hand, the crushed polypropylene resin a having a specific gravity smaller than 1.0 gathers on the water surface of the separated water 70 on the rotation center axis side and is supplied to the dehydrator 48 by the screw recovery unit 63 via the discharge port 62.
[0053]
  The dehydrated polypropylene resin a is sent out from the transport duct 69 by the blower 68 and collected. The dewatered sorted water is supplied to the water storage tank 50 through the dehydrating liquid discharge portion 49. The sorted water supplied to the water storage tank 50 and the crushed material having a specific gravity greater than 1.0 are circulated to the first raw material supply unit 43 by the second pump 51 and returned to the float / sink type water specific gravity sorter 42 again. Since the crushed material having a specific gravity greater than 1.0 is hydrophilic, it settles in the second sorting tank 53.
[0054]
  As a result, most of the crushed material having a specific gravity of more than 1.0 can be separated and recovered by the float / sink type water specific gravity sorter 42, because it is initially water-repellent, or has bubbles attached, Thus, the crushed material that could not be separated by holding the air inside was separated and removed by the vertical centrifugal water specific gravity sorter 44 that strongly separates by the centrifugal force G. Since the polypropylene resin a can be collected, a material suitable for material recycling can be provided.
[0055]
  In addition, when the vertical centrifugal water specific gravity sorter 44 of the present invention is replaced with a horizontal centrifugal water specific gravity sorter, the exact same effect can be obtained, and when the centrifugal force is replaced with a hydrocyclone of about 5G, Although the separation accuracy is slightly inferior to that of the present embodiment, it goes without saying that it can withstand practical use depending on the application of material recycling.
[0056]
  (Example 2)
  As shown in FIG. 3, a hydrocyclone (a hydrocyclone (first water specific gravity sorter) 42 and a vertical centrifugal water specific gravity sorter (second water specific gravity sorter) 44 is placed between a float / sink type water specific gravity sorter (first water specific gravity sorter) 42 and a vertical centrifugal water specific gravity sorter (second water specific gravity sorter) 44. A third water specific gravity sorting device 71 is provided, and the float / sink type water specific gravity sorter 42 is placed on the upper part of the outer peripheral side wall portion of the substantially inverted conical hydrocyclone 71 via the first pump 46 (first supply means). It connects with the 3rd raw material supply part 72 provided in the tangential direction, the upper discharge piping (2nd supply means) 73 provided in the upper part on the central axis of the hydrocyclone 71, and the vertical centrifugal water specific gravity sorter 44 The second raw material supply unit 45 is connected.
[0057]
  The lower discharge pipe 74 provided at the lower part on the center axis of the hydrocyclone 71, the first recovery pipe 47 of the vertical centrifugal water specific gravity sorter 44, and the dehydrated liquid discharge part 49 are stored water provided with a stirrer 50a. The water tank 50 is connected to the tank 50, and the water tank 50 is connected to the first raw material supply unit 43 via the second pump 51. Other configurations are the same as those of the first embodiment, and the same reference numerals are given and description thereof is omitted.
[0058]
  The operation in the above configuration will be described. A mixture of the crushed material and the sorted water floating in the water by the float / sink type water specific gravity sorter 42 is supplied into the hydrocyclone 71 from the third raw material supply unit 72 via the discharge unit 56 and the first pump 46. . In the hydrocyclone 71, a downward spiral flow is formed according to a substantially inverted spindle shape, and a centrifugal force of about 5 G in the horizontal direction acts due to the spiral flow, and the crushed material that sinks in water moves to the outer peripheral portion, and the lower discharge pipe 74 Flows into the water storage tank 50.
[0059]
  On the other hand, the crushed material floating in the water resists the centrifugal force in the horizontal direction, moves to the center axis side of the spiral flow, and connects the upper discharge pipe 73 and the second raw material supply unit 45 of the vertical centrifugal water specific gravity sorter 44. The polypropylene resin a that is supplied to the vertical centrifugal water specific gravity sorter 44 and floats on the water is separated and collected via the transport duct 69, and a mixture of the crushed material and the sorted water that sinks in the water is the first collection pipe 47. Is supplied to the water storage tank 50, and the dewatered sorted water is supplied from the dehydrating liquid discharge unit 49 to the water storage tank 50.
[0060]
  The mixture of the crushed material sinking into the water brought into the water storage tank 50 and the sorted water is circulated to the first raw material supply unit 43, and the crushed material with no water repellency or the crushed material from which the air has been removed is floated water. It is settled and collected by the specific gravity sorter 42. Since other operations are the same as those in the first embodiment, description thereof is omitted.
[0061]
  As a result, the crushed material that is submerged in water is separated by a hydrocyclone 71 that is superior in separation performance to the float / sink type water specific gravity sorter 42 and the next stage float / sink type water specific gravity sorter 42, the amount of crushed material is reduced, and the most separated Since the final separation is performed by the vertical centrifugal water specific gravity sorter 44 having excellent performance, the polypropylene resin a with very little foreign matter can be collected. That is, a hydrocyclone (third water specific gravity) is provided between a float / sink type water specific gravity sorter (first water specific gravity sorter) 42 and a vertical centrifugal water specific gravity sorter (second water specific gravity sorter) 44. By disposing the sorting device 71, it is possible to collect a polypropylene resin with less foreign matter mixing than in the first embodiment.
[0062]
  Example 3
  As shown in FIG. 4, an underwater crusher (underwater crushing means) 75 is provided between a float / sink type water specific gravity sorter (first water specific gravity sorter) 42 and a hydrocyclone (third water specific gravity sorter) 71. The discharge unit 56 of the float / sink type water specific gravity sorter 42 and the crushing chamber unit 75a of the submerged crusher 75 are connected, and the discharge unit 75b and the upper part of the outer peripheral side wall portion of the hydrocyclone 71 are provided tangentially. The third raw material supply unit 72 is connected. Other configurations are the same as those of the first embodiment or the second embodiment, and the same reference numerals are given and the description thereof is omitted.
[0063]
  The operation in the above configuration will be described. Of the crushed material separated by the float / sink type water specific gravity sorter 42, the crushed material floating in the water is supplied from the discharge part 56 of the float / sink type water specific gravity sorter 42 into the crushing chamber 75a of the underwater crusher 75. Since the underwater crusher 75 has a crushing and pumping function, the supplied crushed material is crushed into a size of about 5 mm to 10 mm in the crushing chamber 75a, and the hydrocyclone is in a mixture of the crushed material and the selected water. 71 is pumped and fed into the 71 by the pump function of the underwater crusher 75 via the third raw material supply unit 72. Since other operations are the same as those in the first and second embodiments, description thereof is omitted.
[0064]
  As a result, the hydrocyclone 71 and the vertical centrifuge thereafter are obtained by the fact that the crushing size of the crushed material is roughly aligned with about 5 mm to 10 mm, and the crushed material is strongly crushed during underwater crushing and the surface of the crushed material becomes hydrophilic. Separation accuracy in the water-type specific gravity sorter 44 is improved. Moreover, the cleaning effect of the dirt adhering to the surface of the crushed material during crushing in water can also be obtained. Therefore, an improvement in the separation accuracy of the polypropylene resin and a cleaning effect on the resin surface can be obtained, and a polypropylene resin suitable for material recycling can be obtained.
[0065]
  (Example 4)
  The entire system is shown in FIG. 5 and the details of the solid-liquid separator 76 (solid-liquid separation means) are shown in FIG. 6, and the entire system includes a bottom 53a of the second sorting tank 53 of the float-sink type water specific gravity sorter 42, A lower discharge pipe 74 of the hydrocyclone 71, a first recovery pipe 47 of the vertical centrifugal water specific gravity sorter 44, and a solid-liquid separator 76 are connected. The solid-liquid separator 76 is connected to a solid discharge part 76a. A drainage part 76 b is provided, and the drainage part 76 b is connected to the water storage tank 50 via a pump 77.
[0066]
  In this solid-liquid separator 76, as shown in FIG. 6, a solid-liquid separation / conveyance body (solid-liquid separation / conveyance means) 78 is formed in a substantially disc shape, an outer peripheral wall 78a is provided on the outer peripheral portion, and a net body is provided on the outer peripheral bottom. 78b is provided and is rotatable via a shaft 80 of a motor 79. Here, the net body 78b has a finer mesh than the size of the separated crushed material to be supplied.
[0067]
  The recovered material supply pipe (solid-liquid supply means) 81 supplies a mixture of the crushed material and the separated water separated above the solid-liquid separation transport body 78 and is provided above the solid-liquid separation transport body 78. . A water receiving tank 82 and a drain pipe 83 are disposed below the solid-liquid separating and conveying body 78 so as to face the recovered material supply pipe 81. The recovery duct 84 is provided at a position different from the recovered material supply pipe 81 above the solid-liquid separation transport body 78, and a blower (pneumatic feed means) 85 is provided below the solid-liquid separation transport body 78 so as to face the recovery duct 84. It is arranged.
[0068]
  Here, the solid / liquid recovery duct 84 and the blower 85 constitute a solid recovery means for recovering the crushed material separated by the solid-liquid separation / conveyance body 78 and transported, and the blower 85 further includes the crushed material. The clogging preventing means for preventing clogging of the water is configured. Other configurations are the same as those in the first to third embodiments.
[0069]
  The operation in the above configuration will be described. A solid-liquid separator in which a mixture of crushed material settled on the bottom 53a of the second sorting tank 53 of the float / sink type water specific gravity sorter 42 and the sorted water is rotated from the collected product supply pipe 81 via the shaft 80 of the motor 79. 76 is supplied onto a solid-liquid separating and conveying body 78. In addition, the mixture of crushed material and sorted water that sinks in water from the lower discharge pipe 74 and the first recovery pipe 47 of the hydrocyclone 71 is also recovered on the solid-liquid separation transport body 78 of the solid-liquid separator 76. It is supplied via the material supply pipe 81.
[0070]
  At this time, the sorted water passes through the net body 78 b and is supplied from the water receiving tank 82 to the water storage tank 50 via the drain pipe 83 and the pump 77, and the selected water in the water storage tank 50 is supplied to the float-sink type water specific gravity via the pump 51. It circulates to the first raw material supply unit 43 of the sorter 42.
[0071]
  On the other hand, the crushed material that sinks in the water remaining on the net body 78b of the solid-liquid separation transport body 78 is transported to the upper portion of the blower 85 by the rotation of the solid-liquid separation transport body 78 with the separated water separated. It is possible to recover the crushed material with a small amount of sorting water attached through the solid recovery duct 84.
[0072]
  As a result, the crushed material that sinks in the water separated by the hydrocyclone 71 and the vertical centrifugal water specific gravity sorter 44 is separated by the solid-liquid separator 76, and only the sorted water is circulated to the float and sink water specific gravity sorter 42. Since the amount of crushed material to be sorted by the float / sink type water specific gravity sorter 42 can be reduced, the sorting accuracy can be improved.
[0073]
  In addition, when the crushed material is blown off with the pressurized air from the direction opposite to the crushed material supply side of the mesh body 78b of the solid-liquid separating and conveying body 78, small pieces of crushed material clogging the mesh body 78b can also be blown off. Good separation performance of the crushed material and the sorted water by the liquid separation carrier 78 can be ensured, and the crushed material that sinks in the water by the pressurized air from the blower 85 can also be dried. Since other operations are the same as those in the first to third embodiments, description thereof will be omitted.
[0074]
  (Example 5)
  As shown in FIG. 7, from a dehydrator (dehydrating means: not shown) provided in the upper part of the vertical centrifugal water specific gravity sorter 44, a blower 68 and a conveying duct 69 constituting wind power conveying means are provided. A first cyclone (third recovery means) 86 to which the polypropylene resin a is pneumatically fed is provided, and a first hermetic recovery container 87 is disposed in the lower discharge portion 86a of the first cyclone 86 for solid-liquid separation. A dehydrator 88 and a second cyclone 89 are provided in the next stage of the solid discharge part 76a of the machine 76, a second hermetic recovery container 90 is disposed in the lower discharge part 89a of the second cyclone 89, and the first The upper exhaust part 86 b of the cyclone 86 and the upper exhaust part 89 b of the second cyclone 89 are connected to the dust collector 91.
[0075]
  The dehydrator 88 includes a raw material supply unit 88a, a discharge unit 88b, a dehydration liquid discharge unit 88c, and a dehydration hole (not shown) having a dehydration hole (not shown) smaller than the size of a crushed material that is rotatably connected by a motor 92 and a shaft 93. A conical perforated rotary dewatering tank 94, a blower 95 that pneumatically feeds crushed material, and a pump 96 that circulates the dewatered sorted water to the water storage tank 50. Other configurations are the same as those of the first to fourth embodiments, and the same reference numerals are given and the description thereof is omitted.
[0076]
  The operation in the above configuration will be described. The water separated by the final vertical centrifugal water specific gravity sorter 44 via the float / sink type water specific gravity sorter 42, the underwater crusher 75, the hydrocyclone 71, and the vertical centrifugal water specific gravity sorter 44. The floating polypropylene resin a is dehydrated by a dehydrator (not shown) provided in the upper part of the vertical centrifugal water specific gravity sorter 44, and then passed through the lower discharge part 86a of the first cyclone 86. It is recovered in one closed recovery container 87.
[0077]
  The bottom 53a of the second sorting tank 53 of the float / sink type water specific gravity sorter 42, the lower discharge pipe 74 of the hydrocyclone 71, and the first recovery pipe 47 of the centrifugal water specific gravity sorter 44 are used. The styrene resin b that sinks in water is supplied to the solid-liquid separator 76. The supplied styrene-based resin b is discharged from the solid discharge unit 76a of the solid-liquid separator 76, and is supplied to the rotation center axis of the perforated rotary dehydration tank 94 of the dehydrator 88 through the raw material supply unit 88a. The styrene resin b is moved upward by centrifugal force while being dehydrated in the perforated rotary dewatering tank 94, and is supplied to the second cyclone 89 by the blown air 95 through the discharge portion 88b and is supplied to the lower discharge portion. It is recovered in a closed recovery container 90 through 89a.
[0078]
  On the other hand, the sorted water dehydrated by the dehydrator 88 is circulated to the water storage tank 50 via the dehydrating liquid discharge portion 88 c and the pump 96. Further, the exhaust from the upper exhaust part 86b of the first cyclone 86 and the exhaust from the upper exhaust part 89b of the second cyclone 89 are connected to the dust collector 91 and processed. Since other operations are the same as those in the first to fourth embodiments, description thereof will be omitted.
[0079]
  As a result, the polypropylene resin a can be recovered in a dry state that can be immediately provided to repellet processing for material recycling. Styrenic resins can also be recovered in a dry state that can be immediately provided as a raw material for thermal recycling.
[0080]
  (Example 6)
  The partial system is shown in FIG. 8, and the details of the wind sorter (wind sorter) 97 are shown in FIG. 9, and the dehydrator (dehydrator: not shown) provided in the upper part of the vertical centrifugal water specific gravity sorter 44 is shown. ) And a raw material supply pipe (second raw material supply means) 98 of the wind power sorter 97 through the blower 68 and the transport duct 69 that constitute the wind power transport means, and a discharge section at the top of the wind power sorter 97 99 and the first cyclone 86 (third recovery means) are connected, and a recovery container 101 for recovering the polypropylene resin a is provided in the sorted product discharge unit 100 at the lower part of the wind power sorter 97, so that the first cyclone 86 The first cyclone 86 and a sealed recovery container (rigid body) 87 for recovering an ultralight object e such as a film of a multilayer capacitor in a hermetically sealed state are provided at the lower part.
[0081]
  As shown in detail in FIG. 9, the cylindrical body 102 of the wind power sorter 97 has a substantially cylindrical shape having a body portion 102a, is arranged so that the central axis is in a substantially vertical direction, and has a substantially conical shape above and below the body portion 102a. An upper end portion 102b and a lower end portion 102c formed in a trapezoidal shape are provided, and the raw material supply pipe 98 is provided at the lower end of the body portion 102a with the upper end portion obliquely upward and substantially tangential, and the upper end portion 102b of the cylindrical body 102 A discharge portion 99 that discharges ultra-lightweight material from the bottom, a sorter discharge portion 100 that discharges polypropylene resin a from the lower end portion 102c of the cylindrical body 102, a collision plate 103 provided on the inner surface of the cylindrical body 102, and a collision plate 103 is arranged so that the collision surface 103a is inclined and protrudes in the direction of the central axis, and the spiral rising air flow in the cylinder collides with the collision surface 103a. Other configurations are the same as those in the first to fifth embodiments.
[0082]
  The operation in the above configuration will be described. As shown in FIG. 8, the polypropylene resin a selected by the vertical centrifugal water specific gravity separator 44 is dehydrated by a dehydrator (not shown) provided in the upper part of the vertical centrifugal water specific gravity separator 44. After that, the blower 68 passes the feed duct 69 into the cylindrical body 102 of the wind power sorter 97, and the polypropylene resin a together with the pressurized air from the raw material supply pipe 98 is obliquely upward and substantially tangential from the lower part of the cylindrical body 102. Pneumatically sent toward.
[0083]
  Here, the air volume of the dust collector (not shown) is set to be slightly larger than the air flow rate of the blower 68, and the inside of the cylinder 102 has a negative pressure. A weak ascending air flow is generated from the sorted product discharger 100 into the cylinder 102. Therefore, the polypropylene resin a sent into the cylinder 102 is blown up in a spiral shape by the spiral rising air flow.
[0084]
  At this time, the polypropylene resin a (sorted material having a large mass) moves to the inner wall side of the cylindrical body 102 due to the centrifugal force of the spiral rising air flow and decelerates due to gravity to fall inside the cylindrical body 102, so It is discharged from the discharge unit 100 into the collection container 101 and collected.
[0085]
  As shown in detail in FIG. 9, the size (mass) of the polypropylene resin a varies, and the larger polypropylene resin a falls at a faster stage. It collides with the collision surface 103a of the collision plate 103 and bounces downward, and the inertial force in the gravitational direction increases and falls.
[0086]
  On the other hand, ultra-lightweight materials e (foams such as films of multilayer capacitors and polystyrene foam) that cannot be separated due to the surface property, shape, and mass (small) of the crushed material in the water specific gravity sorting are mixed in as a spiral. Is blown up to the upper part of the cylindrical body 102 by the upward rising air flow, separated by a first cyclone (not shown) through the upper discharge part 99, and the ultralight object e is the first sealed recovery container. (Not shown). Other operations are the same as those in the first to fifth embodiments, and a description thereof will be omitted.
[0087]
  The film of the multilayer capacitor is obtained by evaporating aluminum on a PET film, and has a higher melting point than polypropylene resin. Therefore, the screen of the extruder is clogged during repellet processing, and the productivity is remarkably deteriorated. In addition, when different materials are mixed, the physical properties deteriorate or black spots are formed on the surface of the molded product. By separating and collecting the ultralight material e such as a film of a multilayer capacitor or a foamed polystyrene, it is possible to repellet processing. It is possible to recover a polypropylene resin that reduces productivity, reduces physical properties, and contains less contaminants on the surface of the molded product.
[0088]
  (Example 7)
  As shown in FIG. 10, a blower (pumping means and wind power supply means) for pneumatically feeding polypropylene resin a discharged from a dehydrator (not shown) provided in the upper part of the vertical centrifugal water specific gravity sorter 44. 68 blowing parts 104 are branched, and the first blowing part 104 a is connected to the raw material supply pipe 98 of the wind power sorter (wind power sorting means) 97, and the discharge part 99 and the first cyclone 86 at the upper part of the wind power sorter 97. (A third recovery means) is connected, and a circulation path for compressed air is formed by connecting the upper exhaust part 86b of the cyclone and the intake port 68a of the blower 68.
[0089]
  On the other hand, the second blowing portion 104b is open to the atmosphere. At this time, the branch of the blower part 104 of the blower 68 is set so that the air volume to the first blower part 104a is approximately 80% and the second blower part is approximately 20%. Other configurations are the same as those in the first to sixth embodiments.
[0090]
  The operation in the above configuration will be described. First, the circulation path of the pressurized air path will be described. The circulation path of the pressurized air is such that the supply air volume from the blower 68 is approximately 80% of the intake air volume from the intake port 68a, and the inside of the first cyclone 86, the sealed container 101b, and the wind power sorter 97 is A negative pressure is applied, so that a slight amount of air is sucked from the sorted matter discharge unit 100 of the wind power sorter 97. Other operations are the same as in the first to fifth embodiments (the overall system and water specific gravity selection).
This is the same as another operation) and the sixth embodiment (wind power sorting operation), and a description thereof will be omitted.
[0091]
  As a result, by using an independent system that collects the crushed material after the water specific gravity sorting, there is no need to connect the dust collector (not shown) and the first cyclone 86, and the wind sorter 97 has a negative pressure. Setting can be facilitated.
[0092]
  (Example 8)
  As shown in FIG. 11, a secondary crusher (secondary crushing means) 108 having a raw material hopper 105, a blower 106 that pneumatically feeds crushed material, and a transport duct 107 is provided, and a float / sink type water specific gravity sorter (water The material supply pipe 110 of the wind power sorter (wind power sorting means) 109 provided on the upstream side of the specific gravity sorter) 42 is connected to the transport duct 107, and the sorted matter discharge unit 111 of the wind sorter 109 and the float / sink type water specific gravity sort. The first raw material supply unit 43 of the machine 44 is connected without being sealed.
[0093]
  Further, the discharge unit 112 on the upper part of the wind power sorter 109 and the third cyclone 113 are connected to each other, and the superposition of the film, foam, dust, etc. of the multilayer condenser that is in a hermetically sealed state with the lower discharge port 113a of the third cyclone 113 is obtained. A sealed recovery container (rigid body) 114 for recovering the lightweight object e is provided, the upper exhaust port 113b of the third cyclone 113 is connected to the dust collector 91, and the blower 106 is set so that the inside of the wind power sorter 109 has a slightly negative pressure. It is set as the structure which made the suction air volume of the dust collector 91 larger than the air volume of. Here, the blower 106 and the transport duct 107 constitute transport means. The other structure is the same as the said Example 1 (water specific gravity sorter) and Example 6 (wind power sorter).
[0094]
  The operation in the above configuration will be described. The remaining crushed material of about 30 mm to 100 mm, in which iron is recovered by a magnetic separator after first crushing the waste home appliance, is put into the raw material hopper 105 of the secondary crusher 108. The input primary crushed material is re-crushed to approximately 10 mm to 15 mm by the secondary crusher 108 and then pneumatically fed into the wind power sorter 109 by the blower 106 through the transport duct 107.
[0095]
  In the wind power sorter 109, foamed polystyrene or multilayer condenser film that is easily mixed as a foreign material into the polypropylene resin a that is sorted and collected for the purpose of material recycling, ultra-lightweight materials such as dust that contaminates sorted water, non-ferrous metals, rubber, etc. The plastic group (heavy material) containing non-ferrous and rubber is supplied from the first material supply unit 43 together with the sorted water circulated from the sorted product discharge unit 111 to the float / sink type water specific gravity sorter 42. Is done.
[0096]
  On the other hand, the ultralight material is supplied from the upper discharge unit 112 to the third cyclone 113 and is collected in the sealed collection container 114. Other operations are the same as those of the first embodiment (water specific gravity sorter) and the sixth embodiment (wind power sorter), and the description thereof is omitted.
[0097]
  As a result, the crushing size is adjusted to a size of about 10 mm to 15 mm, so that the entanglement and overlap between the crushed materials can be reduced, and the separation accuracy of wind sorting and water specific gravity sorting of ultralight and heavy items is improved. can do. In addition, since the ultralight material is removed in advance by the wind power sorter 109 before the water specific gravity sorting, it is possible to reduce the contamination of the polypropylene resin a with foreign matter.
[0098]
  Example 9
  As shown in FIG. 12, between the secondary crusher (secondary crushing means) 108 and the wind power sorter 109 on the upstream side of the float / sink type water specific gravity sorter 42, the crushing material supply port 115 and the container 116 are provided. A raw material quantitative feeder (raw material quantitative supply means) having a supply screw portion 118 that is rotatable by a motor 117 provided at a lower portion, and a transport duct 120 in which a front end portion of the supply screw portion 118 communicates and a blower 119 is disposed at a lower end portion. ) 121 is provided, and the sorter discharge port 123 of the wind sorter 122 provided above the crushed product supply port 115 is disposed in the crushed product supply port 115, and the transport duct 107 of the secondary crusher 108 and the wind sorter are arranged. Machine 122 and the conveyance duct 120 of the raw material quantitative supply machine 121 and the wind power sorter 109 are connected.
[0099]
  Further, the upper discharge part 123 of the wind sorter 122 is connected to the dust collector 91 via a fourth cyclone 126 in which a sealed recovery container 125 is arranged at the lower part, and the upper discharge part 112 of the wind sorter 109 is connected to the lower part. It is configured to be connected to the dust collector 91 through a third cyclone 113 in which the hermetic recovery container 114 is disposed.
[0100]
  At this time, the suction air volume of the dust collector 91 is set to be larger than the air volume of the blower 106 of the secondary crusher 108 and the blower 118 of the raw material fixed amount feeder 120, and the inside of each of the wind sorter 122 and the wind sorter 109 is slightly increased. A negative pressure state is set. In other configurations, the configuration of the water specific gravity sorter is the same as that of the first or second embodiment, and the configuration of the wind power sorter is the same as that of the sixth embodiment.
[0101]
  The operation in the above configuration will be described. The crushed material re-crushed to about 10 mm to 15 mm by the secondary crusher 108 is supplied to the first-stage wind power sorter 122 through the transport duct 107 together with the compressed air of the blower 106. Of the supplied crushed material, the ultra-light material that has been primarily selected is supplied to the fourth cyclone 126 via the upper discharge portion 124 and is recovered in the sealed recovery container 125.
[0102]
  On the other hand, among the crushed material, heavy material enters the container 116 of the raw material fixed quantity supply machine 121 from the selected material discharge part 123 of the wind power sorter 122 and is quantitatively supplied to the transport duct 120 from the rotary screw part 118 rotated by the motor 117. Thus, a fixed amount of air is supplied into the second-stage wind power sorter 109 by the compressed air of the blower 119. Of the crushed material supplied in a fixed amount, the ultra-light material that has been secondarily selected is supplied to the third cyclone 113 via the upper discharge portion 112 and is recovered in the sealed recovery container 114.
[0103]
  On the other hand, of the crushed material, a fixed amount of heavy material that has been secondarily sorted by wind power is supplied to the floatation-type water specific gravity sorter 42 along with the sorted water through the sorted material discharge unit 111 and the first raw material supply unit 43. In other operations, the operation of the water specific gravity sorter is the same as that of the first embodiment or the second embodiment, and the operation of the wind sorter is the same as that of the sixth embodiment.
[0104]
  As a result, the crushed material whose crushing size is adjusted to about 10 mm to 15 mm by the secondary crusher 108 is subjected to two-stage wind power selection, so that foreign matter contamination into the polypropylene resin a can be reduced. Furthermore, since the crushed material is quantitatively supplied to the water specific gravity sorter, the accuracy of sorting the polypropylene resin a can be improved by suppressing the overlap between the crushed materials.
[0105]
  (Example 10)
  As shown in FIG. 13, the blower part of the blower 106 of the secondary crusher 108 is branched into a first blower part 127 a and a second blower part 127 b, and the first blower part 127 a is connected to the lower end of the transport duct 107. The secondary crusher 108 and the wind power sorter 122 are connected through the transport duct 107. Here, the sorted product discharger 123 at the bottom of the wind power sorter 122 is inserted into the crushed product supply port 115 of the raw material fixed quantity supply device 121 in an open state.
[0106]
  Further, the upper exhaust part 124 of the wind power sorter 122 is connected to the fourth cyclone 126, and the upper exhaust part 126b is connected to the air inlet 106a of the blower 106 of the secondary crusher 108, so that the first compressed air is supplied. This constitutes the circulation path. Here, the hermetic recovery container 125 is disposed in a hermetically sealed state with the lower discharge portion 126a of the fourth cyclone 126. At this time, the second blowing part 126b of the blower 106 is configured to be open to the atmosphere so that the air volume of the first blowing part 126a is approximately 80% of the intake port 106a of the blower 106.
[0107]
  Furthermore, the blowing part of the blower 119 of the raw material quantitative supply machine 121 is branched into a first blowing part 128a and a second blowing part 128b, and the first blowing part 128a is connected to the lower end of the transfer duct 120, so that the transfer duct The raw material quantitative supply machine 121 and the wind power sorter 109 are connected via 120. Here, the sorted matter discharge unit 111 at the lower part of the wind power sorter 109 is connected to the first raw material supply unit 43 of the float / sink type water specific gravity sorter 42 without being sealed.
[0108]
  Further, the upper discharge unit 112 of the wind power sorter 109 is connected to the third cyclone 113, and the upper exhaust unit 113b of the third cyclone 113 is connected to the intake port 119a of the blower 119 of the raw material fixed quantity supply device 121, It constitutes a second circulation path for the compressed air. Here, the closed recovery container 114 is disposed in a hermetically sealed state with the lower discharge portion 113a of the third cyclone 113. At this time, the second blowing part 128b of the blower 119 is configured to be open to the atmosphere so that the air volume of the first blowing part 128a is approximately 80% of the intake port 119a of the blower 119. In other configurations, the overall configuration of the water specific gravity sorter is the same as that of the first embodiment or the second embodiment, and the configuration of the wind power sorter is the same as that of the sixth embodiment. The configuration other than the circulation path of the pressurized air up to is the same.
[0109]
  The operation in the above configuration will be described. Since the air volume of the first blowing section 127a of the blower 106 of the secondary crusher 108 is approximately 80% of the air volume of the air inlet 106a of the blower 106, the inside of the wind power sorter 122 and the fourth air flow in the circulation path of the pumped air The inside of the cyclone 126 is in a slightly negative pressure state, and a state in which a slight amount of air is sucked from the sorted product discharger 123 at the lower part of the wind power sorter 122. The same applies to the second circulation path of the compressed air. In other operations, the water specific gravity sorting operation is the same as that of the first embodiment or the second embodiment, and the wind sorting operation is the same as that of the sixth embodiment. The operation is the same as that of the ninth embodiment, and the description is omitted.
[0110]
  As a result, since the circulation paths of the pumped air are made independent, the negative pressure state in each wind power sorter and the air balance of wind power for wind sorting and crushed material can be easily controlled. Also, since no dust collector is required, the equipment cost can be reduced.
[0111]
  (Example 11)
  As shown in FIG. 14, a sorted water supply pipe 130 is provided from the second sorting tank 53 of the float / sink type water specific gravity sorter 42 to the water storage tank 129, and the float / sink type water specific gravity sorter 42 is supplied from the water storage tank 129 via the pump 131. Connected to a shower unit 132 provided on the surface of the water, air piping from the second blowing unit 127b of the blower 106 of the secondary crusher 108 and the second blowing unit 128b of the blower 119 of the raw material constant quantity feeder 121. A pipe front end portion 133 is provided below the shower portion 132 so that air from the blower 106 and the blower 119 passes under the shower portion 131. Other configurations are the same as those of the tenth embodiment.
[0112]
  The operation in the above configuration will be described. The sorted water in the second sorting tank 53 of the float / sink type water specific gravity sorter 42 is floated and settled from the shower unit 132 provided on the first sorting tank 52 via the sorted water supply pipe 130, the water storage tank 129 and the pump 131. It is made to circulate on the sort water surface of the type | formula water specific gravity sorter 42. FIG. Here, the air blown out from the pipe front end portion 133 piped from the second blowout portion 127b of the blower 106 of the secondary crusher 108 and the second blowout portion 128b of the blower 119 of the raw material quantitative supply device 121, When passing under the shower unit 131, fine dust contained in the air is struck by the shower and dispersed in the sorted water. Other operations are the same as those in the tenth embodiment, and a description thereof will be omitted.
[0113]
  As a result, it is possible to prevent dust from scattering from the second blowing part 125b of the blower 106 of the secondary crusher 108 and the second blowing part 126b of the blower 118 of the raw material quantitative supply machine 121 to the work place.
[0114]
  (Example 12)
  As shown in FIG. 15, the discharge unit 56 of the float / sink type water specific gravity sorter 42 and the second raw material supply unit 45 of the vertical centrifugal water specific gravity sorter 44 are connected via the pump 46, and the float / sink type water specific gravity sorter is connected. The bottom 53 a of the second sorting tank 53 of the machine 42 and the first recovery pipe 47 of the vertical centrifugal water specific gravity sorter 44 are connected to the solid-liquid separator 76, and the drainage part of the solid-liquid separator 76 76 b is connected to the water storage tank 50 through a pump 77.
[0115]
  Further, the dewatering liquid discharge section 49 of the vertical centrifugal water specific gravity sorter 44 is connected to the water storage tank 50, and the selected water is piped from the water storage tank 50 to the first raw material supply section 43 and the shower section 132 via the pump 51. Is configured to circulate. On the other hand, the separated product is discharged from the solid discharge part 76a of the solid-liquid separator 76. Other configurations are the same as those of the eleventh embodiment.
[0116]
  The operation in the above configuration will be described. The styrenic resin b that has sunk in the second sorting tank 53 of the float / sink type water specific gravity sorter 42 is supplied to the solid-liquid separator 76 together with the sort water from the bottom 53a. Further, the styrene resin b that sinks in the water separated by the centrifugal force from the first recovery pipe 47 of the vertical centrifugal water specific gravity sorter 44 is supplied to the solid-liquid separator 76 together with the sorted water.
[0117]
  The styrene-based resin b and the sorted water supplied to the solid-liquid separator 76 are separated, and the sorted water is separated from the first raw material supply unit 43 and the shower unit via the discharge unit 76b, the pump 77, the water tank 50, and the pump 51. The selected water is supplied to 132 and circulated to the float / sink type water specific gravity sorter 42. On the other hand, the styrene resin b separated by the solid-liquid separator 76 is discharged from the solid discharge portion 76a. Other operations are the same as those of the above-described embodiment 11, and the description thereof is omitted.
[0118]
  As a result, a two-stage wind sorter (not shown from the secondary crusher to the raw material supply unit) separates and removes ultra-lightweight materials such as film and polystyrene foam that are difficult to separate at the time of water specific gravity sorting in advance. Further, the vertical centrifugal force is applied by forcibly pulling the floating polystyrene resin b in the flow for discharging the sorted water from the bottom 53a of the second sorting tank 53 of the float / sink type water specific gravity sorter 42. Since the amount of foreign matter and styrene resin b mixed into the crushed material supplied to the water-type specific gravity sorter 44 and the absolute supply amount of the crushed material can be reduced, the sorting accuracy of the polypropylene resin a can be improved.
[0119]
  Further, since the sorted water is supplied to the shower unit 132 via the solid-liquid separator 76, the possibility of clogging with the styrene resin b can be prevented. Further, the styrene resin b can be separated and discharged from the sorted water.
[0120]
  (Example 13)
  As shown in FIG. 16, the solid discharge part 76a of the solid-liquid separator 76 and the supply part 88a of the dehydrator 88 are connected, the discharge part 88b of the dehydrator 88 and the second cyclone 89 are connected, and the second The upper exhaust part 89 b of the cyclone 89 is connected to the dust collector 91, and the sealed recovery container 90 is provided in the lower exhaust part 89 a of the second cyclone 89.
[0121]
  Further, the conveyance duct 69 of the vertical centrifugal water specific gravity sorter 44 and the raw material supply pipe 98 of the wind sorter 97 are connected, and the upper discharge part 99 of the wind sorter 97 and the first cyclone 86 are connected, The upper exhaust part 86b of the first cyclone 86 and the blower 68 of the vertical centrifugal water specific gravity sorter 44 are connected to constitute a circulation path of the first pressurized air. Further, the second blowing portion 104b of the blower 68 is connected to the pipe tip end portion 133.
[0122]
  At this time, with the sorted matter discharge unit 100 of the wind power sorter 97 opened, the collection container 101 is provided below, and the sealed recovery is performed so that the lower discharge portion 86a of the first cyclone 86 is kept in the air and sealed state. A container 87 is provided so that the air volume to the first blower 104a of the blower 68 is approximately 80%, and the second blower 104b is approximately 20%. Other configurations are the same as those of the twelfth embodiment.
[0123]
  The operation in the above configuration will be described. The styrenic resin b is supplied to the perforated rotary dehydration tank 94 from the solid discharge part 76a of the solid-liquid separator 76 to the dehydrator 88 via the supply part 88a. The supplied styrene resin b is dehydrated and moves upward in a substantially inverted weight shape by centrifugal force, and is pneumatically fed from the discharge part 88b into the second cyclone 89 by the blower 95, and the styrene resin b is discharged to the lower part. It is recovered from the portion 89a into the sealed recovery container 90. At this time, the sorted water dehydrated by the dehydrator 88 is circulated to the water storage tank 50 via the pump 96.
[0124]
  Further, the exhaust from the upper exhaust part 89b of the second cyclone 89 is connected to the dust collector 91 and processed. Further, the polypropylene resin a dehydrated by a dehydrator (not shown) in the vertical centrifugal water specific gravity sorter 44 is supplied into the wind power sorter 97 through the transport duct 69 and is a heavy polypropylene resin. a falls into the collection container 101 via the sorted product discharge section 100 and is collected.
[0125]
  On the other hand, the ultralight material e is pneumatically fed into the first cyclone 86 through the upper discharge part 99 of the wind power sorter 97 and falls into the sealed collection container 87 and collected. At this time, in the circulation path of the first pumping air path, the supply air volume from the blower 68 is approximately 80% of the intake air volume from the intake port 68a, so the inside of the first cyclone 86 and the sealed container 87 Then, the inside of the wind power sorter 97 has a negative pressure, and air is slightly sucked from the sorted matter discharge unit 100 of the wind power sorter 97. Other operations are the same as those of the above-described twelfth embodiment, and a description thereof will be omitted.
[0126]
  As a result, at the stage where the absolute amount of the crushed material mixed with the polypropylene resin a after the water specific gravity sorting with the vertical centrifugal water specific gravity sorter and the very small amount of the ultralight material e remaining without being removed is reduced. Once again, the ultralight material e is subjected to wind sorting, so that the polypropylene resin a with little foreign matter can be recovered in a dehydrated state. Further, since the styrene resin b separated by the water specific gravity sorting can be recovered in a dehydrated state, it can be immediately provided for thermal recycling.
[0127]
  (Example 14)
  As shown in FIG. 17, an underwater crusher 75 is provided between the float / sink type water specific gravity sorter 42 and the vertical centrifugal water specific gravity sorter 44, and the discharge unit 56 and the underwater crusher 75 of the float / sink type water specific gravity sorter 42. The crushing chamber part 75a is connected, and the discharge part 75b of the submerged crusher 75 and the second raw material supply part 45 of the vertical centrifugal water specific gravity sorter 44 are connected. Other configurations are the same as those of the thirteenth embodiment.
[0128]
  The operation in the above configuration will be described. The remaining crushed material of the waste home appliance after the iron is collected is supplied as a crushed material of about 10 mm to 15 mm by a secondary crusher (not shown) to the floatation-type water specific gravity sorter 42. Of the supplied crushed material, the mixture of crushed material and sorted water floating by the sorting by the float / sink type water specific gravity sorter 42 is submerged in the underwater crusher 75 at a substantially constant mixing ratio from the discharge unit 56 via the screw type discharge device 57. To the crushing chamber 75a.
[0129]
  The supplied crushed material is crushed to about 5 mm to 10 mm in the crushing chamber 75a, and is supplied from the discharge unit 75b into the vertical centrifugal water specific gravity sorter 44 via the second raw material supply unit 45. Other operations are the same as those of the thirteenth embodiment, and the description is omitted.
[0130]
  As a result, since the mixing ratio of the crushed material of about 5 mm to 10 mm and the sorted water is supplied to the vertical centrifugal water specific gravity sorter 44 at a substantially constant level, there is no entanglement or overlap between the crushed materials, and the polypropylene resin a Separation accuracy can be improved and contamination with foreign matter can be reduced.
[0131]
  In addition, when crushing with the underwater crusher 75, friction between the crushed materials is generated in the selected water, so that the action of cleaning the surface of the crushed material is obtained, and the amount of metal powder adhered and the amount of dirt adhered to the surface of the polypropylene resin a. Less. Therefore, the polypropylene resin a suitable for material recycling can be obtained.
[0132]
  (Example 15)
  As shown in FIG. 18, in the upward direction of the specific gravity liquid sorter 134, the bottom 53a of the float / sink type water specific gravity sorter (not shown) and the first centrifugal water specific gravity sorter (not shown) A raw material supply part 135 is provided in the lower discharge part 89a of the second cyclone 89 to which a resin group (polystyrene resin b is a mixed resin of main components) that is submerged in the sorted water separated from the recovery pipe 47 is supplied. The upper exhaust part 89b of the second cyclone 89 is connected to a dust collector (not shown).
[0133]
  Below the raw material supply unit 135 is provided a specific gravity liquid sorter 134 composed of a sorting tank 136 and an overflow part 138 in which a push screw 137 is disposed, and connects the bottom 136a of the sorting tank 136 and the solid-liquid separator 139. The solid discharge part 139a is connected to the fifth cyclone 141 via the dehydrator 140. Further, the drainage section 139b of the solid-liquid separator 139 and the drainage section 140a of the dehydrator 140 constitute a first specific gravity liquid path A connected to the water storage tank 143 via the pump 142.
[0134]
  In addition, the lower discharge part 141a of the fifth cyclone 141 is provided with a sealed recovery container 143, and the upper exhaust part 141b is connected to a dust collector (not shown). On the other hand, the overflow part 138 is connected to the solid-liquid separator 144, and the solid discharge part 144 a is connected to the sixth cyclone 146 via the dehydrator 145. Further, the drainage section 144 b of the solid-liquid separator 144 and the drainage section 145 a of the dehydrator 144 constitute a second specific gravity liquid path B connected to the water storage tank 143 via the pump 147.
[0135]
  Further, a sealed recovery container 148 is provided at the lower discharge port 146a of the sixth cyclone 146, and the upper exhaust part 146b is connected to a dust collector (not shown). Furthermore, the water storage tank 143 is connected to a raw material supply unit 135 provided above the specific gravity liquid sorter 134 via a pump 149 so as to circulate the specific gravity liquid. Here, the specific gravity liquid is a carbonate adjusted with a specific gravity of 1.2. Other configurations are the same as those of the first to fourteenth embodiments.
[0136]
  The operation in the above configuration will be described. Resin group and selected water mainly composed of polystyrene resin b that has been subjected to water gravity selection and submerged in water using a float / sink type water specific gravity sorter (not shown) and a vertical centrifugal water specific gravity sorter (not shown). Is separated into a resin group and sorted water by the solid-liquid separator 76, and the resin group is supplied to the second cyclone 89 via the dehydrator 88. The resin group supplied to the second cyclone 89 is supplied from the lower discharge part 89a through the raw material supply part 135 to the specific gravity liquid sorter 134 together with the circulating specific gravity liquid (described below).
[0137]
  At this time, the specific gravity liquid passes through the circulation path A of the first specific gravity liquid from the bottom 136a of the sorting tank 136 of the specific gravity liquid sorter 134 and the circulation path B of the second specific gravity liquid from the overflow portion 138 of the specific gravity liquid sorter 134. Then, since it circulates through the water storage tank 143, the pump 149, and the raw material supply part 135, the liquid surface of the specific gravity liquid of the specific gravity liquid sorter 134 flows to the overflow part 138 side.
[0138]
  Here, in the resin group supplied to the specific gravity liquid sorter 134, the vinyl chloride resin c mixed in the styrene resin b in the water specific gravity selection in the previous step has a specific gravity higher than the specific gravity 1.2 of the specific gravity liquid. Since it is large, it sinks into the sorting tank 136 against the flow of the specific gravity liquid, is sucked into the flow of the specific gravity liquid from the bottom portion 136a and is supplied to the solid-liquid separator 139, and the vinyl chloride resin c is dehydrated from the solid discharge section 139a. 140 is supplied to the fifth cyclone 141 through 140 and is recovered from the lower discharge port 141 a to the sealed recovery container 143.
[0139]
  The specific gravity liquid separated from the drainage section 139 b of the solid-liquid separator 139 and the dehydrated specific gravity liquid from the drainage section 140 a of the dehydrator 140 are sent to the water storage tank 143 via the pump 142. On the other hand, a resin group mainly composed of a polystyrene resin b floating in a specific gravity liquid having a specific gravity smaller than 1.2 is supplied from the overflow portion 138 to the solid-liquid separator 144 through the push-in screw 137, and the resin group is It is supplied from the solid discharge part 144a to the sixth cyclone 146 through the dehydrator 145, and is recovered from the lower discharge port 146a to the sealed recovery container 148.
[0140]
  In addition, the specific gravity liquid separated from the drainage section 144 b of the solid-liquid separator 144 and the specific gravity liquid dehydrated from the drainage section 145 a of the dehydrator 145 are sent to the water storage tank 143 through the pump 147. The specific gravity liquid in the water storage tank 143 is circulated to the raw material supply unit 135 of the specific gravity liquid sorter 134 via the pump 149. At this time, the air is exhausted from the upper exhaust part 141b of the fifth cyclone 141 and the upper exhaust part 146b of the sixth cyclone 146 to a dust collector (not shown). Other operations are the same as those in the first to the fourteenth embodiments, and a description thereof will be omitted.
[0141]
  As a result, since the vinyl chloride resin c mixed from the resin group having the styrene resin b separated by the water specific gravity sorting in the previous step as a main constituent can be separated, the resin group having the styrene resin b as the main constituent is It can be provided as a suitable material for a blast furnace reducing material or boiler fuel. The vinyl chloride resin c damages the refractory of the furnace and changes the melt viscosity of iron, so it is used as a fuel material after landfill or dechlorination.
[0142]
  (Example 16)
  As shown in FIG. 19, the bottom 52a of the first sorting tank 52 of the float / sink type water specific gravity sorter 42 is connected to the water storage tank 50, and the bottom 53a of the second sort tank 53 of the float / sink type water specific gravity sorter 42 The drainage section 76 b is connected to the water storage tank 50 through the solid-liquid separator 76 and the first recovery pipe 47 of the vertical centrifugal water specific gravity sorter 44. The water storage tank 50 is connected to a sewage supply unit 152 of a sewage treatment apparatus (sewage treatment means) 151 indicated by a dotted line through a pump 150 to constitute a sewage supply means.
[0143]
  Here, the sewage treatment apparatus 151 is a flocculating / separating apparatus, and includes a flocculating agent reaction tank 153, a floc (aggregate) aging tank 154, and a floc separating tank 155, and the flocculation reaction tank 153 includes a first stirrer. 156a and a flocculant charging device 157 (having a metering pump 157a), a second stirrer 156b is provided in the floc ripening tank 154, and the boundary between the flocculant reaction tank 153 and the floc ripening tank 154 is the first overflow. A flow portion 158 is formed.
[0144]
  The floc separation tank 155 includes a second overflow portion 159, a first guide plate 160a, a second guide plate 160b, a third guide plate 160c, a fourth guide plate 160d, and an inclined plate 161. And a sampling groove 162 and a valve 163 for discharging sludge at the bottom. Further, the water sampling groove 162 of the floc separation tank 155 is connected to the water storage tank 164 by a pipe 165, and the water storage tank 164 is connected to a raw material supply unit (not shown) of the float / sink type water specific gravity sorter 42 via a pump 166. Concatenated structure. Other configurations are the same as those of the first to fifteenth embodiments.
[0145]
  The operation in the above configuration will be described. When the crushed material of used electrical appliances is sorted by specific gravity, the sorted water becomes contaminated with metal powder, non-ferrous powder, heavy metal powder generated during crushing, and mud, cotton dust, dust, etc. adhering during use. At this time, dirty sorted water (hereinafter referred to as “sewage”) is sent to the water storage tank 50 from the bottom 52 a of the first sorting tank 52 of the float / sink type water specific gravity sorter 42.
[0146]
  Further, sewage from the bottom 53 a of the second sorting tank 53 of the float / sink type water specific gravity sorter 42 and from the first recovery pipe 47 of the vertical centrifugal water specific gravity sorter 44 passes through the solid-liquid separator 76. And sent to the water storage tank 50. The sewage collected in the water storage tank 50 is supplied to the coagulant reaction tank 153 via the pump 150 and the sewage supply unit 152. In the flocculation reaction tank 153, the sewage and the flocculant charged by the metering pump 157a of the flocculant charging device 157 are stirred at a low speed by the first stirrer 156a, and the dirt component reacts with the flocculant to cause the aggregate ( (Hereinafter referred to as floc).
[0147]
  The treated water in the flocculant reaction tank 153 overflows to the floc aging tank 154 through the first overflow section 158. In the floc ripening tank 154, the floc is aged by reacting the unreacted overflowing component and the flocculant with stirring at a low speed by the second stirrer 156b. Here, the treated water in the floc ripening tank 154 overflows into the floc separation tank 155 via the second overflow portion 159.
[0148]
  The floc separation tank 155 passes between the first guide plate 160a and the second guide plate 160b, is guided to the bottom along the third guide plate 160c, and the treated water is supplied to the third guide plate 160c and the fourth guide plate 160c. The guide plate 160d is guided upward through a plurality of inclined plates 161. When passing between the inclined plates 161, the treated water is separated into floc and clean sorting water (hereinafter referred to as purified water), and the floc settles and accumulates at the bottom of the floc separation tank 155.
[0149]
  The purified water is accumulated in the water storage tank 164 from the water sampling groove 162 through the pipe 165, and the purified water in the water storage tank 164 is supplied to the floatation-type water specific gravity sorter 42 as selection water via the pump 166. It is circulated from 132. Other operations are the same as those in the first to fifteenth embodiments, and a description thereof will be omitted.
[0150]
  As a result, it is possible to separate the dirt of the crushed material in the sorted water while performing the water specific gravity sorting of the crushed material of the waste home appliance, and to suppress the dirt of the sorted water. Therefore, it is possible to prevent the plastic sorted by the water specific gravity sorting from being recontaminated by the dirt of the sorted water. In addition, since the specific gravity of the selected water can be used in a closed system until it interferes with the selection of the specific gravity of the water, water resources can be used effectively.
[0151]
  In this embodiment, the sedimentation type coagulation separation method is used, but it goes without saying that the same effect can be obtained by a floating type coagulation separation method using pressurized water.
[0152]
  (Example 17)
  As shown in FIG. 20, the float / sink type water specific gravity sorter 42 is provided with a caustic soda automatic feeder 167 (having a metering pump 167 a), the water storage tank 50 is provided with a PH meter 168, and a PH controller 169 is provided. It is said. Other configurations are the same as those of the sixteenth embodiment.
[0153]
  The operation in the above configuration will be described. When the PH measuring device 168 detects that the PH value of the sewage (dirty sorted water) sent to the water storage tank 50 is PH 9.0 or less, the PH control device 169 uses the signal sent from the PH measuring device 168. Then, the metering pump 167a of the caustic soda automatic feeder 167 is operated to supply the caustic soda solution to the float / sink type water specific gravity sorter 42.
[0154]
  When the PH measuring device 168 detects that the pH value of the sorting liquid in the water storage tank 50 is PH10 when the caustic soda solution is diffused into the circulating sorting solution, the PH controller 169 uses the signal sent from the PH measuring device 168 to The metering pump 167a of the caustic soda automatic feeder 167 is stopped. Other operations are the same as those in the sixteenth embodiment, and a description thereof will be omitted.
[0155]
  As a result, the circulating sorting liquid and sewage are held between PH9 and PH10. Here, heavy metals such as lead brought into the sorting water together with the crushed material are hardly dissolved and exist as undissolved SS (floating particles) in the sorting water, so that most of the heavy metals can be agglomerated and separated. it can. Therefore, since the amount of heavy metals in the sorted water can be reduced, it is possible to prevent heavy metal contamination of the plastic to be separated and recovered.
[0156]
  (Example 18)
  As shown in FIG. 21, a third stirrer 156c and a heavy metal chelating agent charging device 170 (having a metering pump 170a) are provided between a pump 150 for supplying sewage from the water storage tank 50 and a flocculant reaction tank 153. The heavy metal reaction tank 171 is disposed so as to overflow from the heavy metal reaction tank 171 to the flocculant reaction tank 152. Other configurations are the same as those of the sixteenth embodiment.
[0157]
  The operation in the above configuration will be described. Sewage is supplied from the water storage tank 50 to the heavy metal reaction tank 171 via the pump 150, and a heavy metal chelating agent is supplied from the heavy metal chelating agent charging device 170 to the heavy metal reaction tank 171 by the metering pump 170 a.
[0158]
  In the heavy metal reaction tank 171, heavy metal ions dissolved in the sewage and the heavy metal chelating agent react with each other by the stirring of the third stirrer 156 c to turn into a water-insoluble substance and overflow into the coagulant reaction tank 153. . In the flocculant reaction tank 153, the other soil components and the heavy metal water-insoluble substance generate flocs by the flocculant. Other operations are the same as those in the sixteenth embodiment, and a description thereof will be omitted.
[0159]
  As a result, heavy metals dissolved in water that cannot be separated by the coagulation separation method can be separated and removed from the sewage by converting the heavy metals into substances insoluble in water. Therefore, the heavy metal can be completely separated and removed from the sewage more than in Example 17.
[0160]
  Example 19
  As shown in FIG. 22, the water tank 50 has a first turbidity meter (first turbidity detection means) 172, the water tank 164 has a second turbidity clock (second turbidity detection means) 173, A bentonite charging device 174 (having a metering pump 174a and a stirrer 174b) for quantitatively charging a bentonite (mineral clay) dispersion into the flocculant reaction tank 153, a first turbidimeter 172 and a second turbidimeter 173 Is provided with a flocculant charging device 157 and a control device 175 for controlling the bentonite charging device 174, and a hydrometer (specific gravity detecting means) 176 is provided in the water storage tank 164. Other configurations are the same as those in the seventeenth embodiment.
[0161]
  The operation in the above configuration will be described. The first turbidimeter 172 detects the degree of dirt (turbidity) of the sewage supplied to the water storage tank 50 from the float / sink type water specific gravity sorter 42 and the vertical centrifugal water specific gravity sorter 44. The second turbidimeter 173 detects the turbidity of the purified water supplied from the sewage treatment device 151 to the water storage tank 164.
[0162]
  At this time, the turbidity value a1 of the first turbidimeter 172 and the turbidity value b1 of the second turbidimeter 173 are set in the controller 175 in advance, and the turbidity value b1 of the first turbidimeter 172 is set. When the degree value is larger than a1 and the turbidity value of the second turbidimeter 172 is larger than b1, the control device 175 throws the flocculant of the flocculant throwing device 157 into the agglomeration reaction tank 153. The metering pump 157a is continuously operated.
[0163]
  When the turbidity value of the first turbidimeter 172 is larger than a1 and the turbidity value of the second turbidimeter 173 is smaller than b1, the control device 175 is a bentonite charging device. The metering pump 174a for feeding the bentonite solution from 174 is continuously operated.
[0164]
  This is because the amount of the flocculating agent contained in the sewage is reduced by the sewage treatment, and the amount of the flocculant becomes excessive. By supplying bentonite to the flocculating agent reaction tank 153, the bentonite is the core of floc formation. As a result, the soil components are aggregated and excess coagulant is consumed to prevent the unreacted coagulant from remaining in the purified water.
[0165]
  Further, when the turbidity value of the first turbidimeter 171 is smaller than a1 and the turbidity value of the second turbidimeter 173 is smaller than b1, the metering pump 157a of the flocculant charging device 157 is used. The control device 175 stops the metering pump 174a of the bentonite charging device 174.
[0166]
  Furthermore, although the salt brought in by the crushed material dissolves in the sorted water and the specific gravity gradually increases, the specific gravity which may cause trouble in sorting the specific gravity of the polypropylene resin a and the styrene resin b is 1. When the hydrometer 176 detects 02, a lamp is displayed on a control device board (not shown) of the waste home appliance recycling processing apparatus to notify that it is time to replace the sorted water. The other operations are the same as those in the above embodiment 17, and the description is omitted.
[0167]
  As a result, it is possible to automatically start and stop the addition of the flocculant and bentonite depending on the degree of contamination of the sewage and the progress of the sewage treatment. In addition, it is possible to know the replacement time of the specific gravity sorting water and maintain the sorting accuracy.
[0168]
  (Example 20)
  As shown in FIG. 23, the conveyance duct 69 of the vertical centrifugal water specific gravity sorter 44 and the first wind sorter 97a are connected to each other, and agitation is performed below the sorting discharge part 100a of the first wind sorter 97a. An acid washing tank 178 having a machine 177a, and connecting the second wind power sorter 97b via the discharge part 178a of the acid washing tank 178 and the solid discharge part 179a1 of the first solid-liquid separator 179a, An alkali cleaning tank 180 having a stirrer 177b is provided below the sorted product discharger 100b of the second wind power sorter 97b.
[0169]
  The third wind sorter 97c is connected via the discharge unit 180a of the alkaline washing tank 180 and the solid discharge unit 178b1 of the second solid-liquid separator 179b, and the discharged matter of the third wind sorter 97c is discharged. A washing tank 181 having a stirrer 177c is provided below the part 100c, and connected to the dehydrator 182 via the discharge part 181a of the water washing tank 181 and the solid discharge part 179c1 of the third solid-liquid separator 179c, A dehydrator 182 and a seventh cyclone 183 having a sealed recovery container 184 disposed at the bottom are connected.
[0170]
  At this time, the liquid discharge part 179a2 of the first solid-liquid separator 179a is circulated to the acid cleaning tank 178 via the first pump 185a, and the liquid discharge part 179b2 of the second solid-liquid separator 179b is the second. The liquid discharger 179c2 of the third solid-liquid separator 179c is circulated to the water cleaning tank 181 via the third pump 185c, and the dehydrator 182 is dehydrated. The liquid is also circulated to the water washing tank 181 via the fourth pump 185d.
[0171]
  Further, the upper discharge part 99a1 of the first wind power sorter 97a, the upper discharge part 99a2 of the second wind power sorter 97b, and the upper discharge part 99a3 of the third wind power sorter 97c are arranged in the lower part. It connects with the 1st cyclone 86 which has arrange | positioned the airtight type | mold collection | recovery container 87, and it is trying for the inside of a wind power sorter (1st-3rd) to become a negative pressure. Here, the upper exhaust part 86b of the first cyclone 86 and the upper exhaust part 183b of the seventh cyclone 183 are connected to a dust collector (not shown). Other configurations are the same as those of the first to twelfth embodiments.
[0172]
  The operation in the above configuration will be described. Polypropylene resin a obtained by dewatering the crushed material of waste home appliances by water density selection is pneumatically fed into the first wind power sorter 97a through the transport duct 69 of the vertical centrifugal water density density sorter 44, and the sort product is collected. It is supplied into the acid cleaning tank 178 containing hydrochloric acid from the discharge part 100a. The polypropylene resin a in the acid washing tank 178 dissolves and removes iron and non-ferrous adhered to the surface of the crushing resin while being stirred by the stirrer 177a, and the second is passed through the discharge unit 178a and the solid-liquid separator 179a. Is supplied into the alkaline cleaning tank 180 containing the caustic soda solution from the sorted product discharger 100b.
[0173]
  The polypropylene resin a in the alkali cleaning tank 180 is neutralized by the caustic soda solution while the acid content remaining on the surface of the crushed resin is being stirred by the stirrer 177b, and is discharged via the discharge unit 180a and the second solid-liquid separator 179b. It is pneumatically fed into the third wind power sorter 97c and supplied from the sorted product discharger 100c to the water washing tank 181 that contains the washing water.
[0174]
  The polypropylene resin a in the water washing tank 181 is supplied to the dehydrator 182 via the discharge unit 181a and the third solid-liquid separator 179c after washing away the alkali remaining on the surface of the crushed resin. The polypropylene resin a dehydrated by the dehydrator 182 is pneumatically fed to the seventh cyclone 183 and collected in the sealed collection container 184.
[0175]
  At this time, the hydrochloric acid discharged from the discharge unit 178a of the acid cleaning tank 178 is circulated to the upper portion of the first acid cleaning tank 178 via the first solid-liquid separator 179a and the first pump 185a. Yes. The caustic soda solution discharged from the discharge unit 180a of the alkali cleaning tank 180 is circulated to the upper part of the alkali cleaning tank 180 via the second solid-liquid separator 179b and the second pump 185b.
[0176]
  Further, the wash water discharged from the discharge part 181a of the water washing tank 181 is circulated to the upper part of the water washing tank 181 through the third solid-liquid separator 179c and the third pump 185c. The dehydrating liquid in the dehydrator 182 is also circulated to the upper part of the water washing tank 181 via the fourth pump 185d. Other operations are the same as those in the first to 19th embodiments, and a description thereof will be omitted.
[0177]
【The invention's effect】
  As described above, according to the invention described in claim 1 of the present invention, the first raw material supply means for supplying the crushed material of waste home appliances, or the crushed material and the sorted water, and the first raw material supply means. The first water specific gravity sorting device that sorts the feedstock from crushed material into at least two types of crushed materials by the difference in specific gravity of the crushed material, and the post-process for the lightweight material and the sorted water out of the at least two types of crushed material A first supply means for supplying to the water, and a second water for sorting into a crushed product that sinks in water again and a crushed product that floats on the water by applying a centrifugal force to the lightweight material and the sorted water sent from the first supply device. Specific gravity sorterAndPrepared,The second water specific gravity sorting device includes a rotary drum having a rotation center axis in the vertical direction and containing the selected water inward, and a lightweight object provided on the rotation center axis of the rotation drum. A cylindrical body for supplying a mixture of sorted water, and a recovery device that is provided on the rotary shaft side of the rotary drum and outside the cylindrical body and collects crushed material floating in water by rotating the rotary drum. Rotating at a first predetermined rotational speed to generate an air layer around the cylinder, collecting the crushed material floating on the water on the rotating shaft side of the rotating drum, and then collecting the recovery machine at the first predetermined rotational speed. Rotate at a second rotational speed higher than the rotational speed, and collect the crushed material floating in the water with the recovery machineTherefore, in the first water specific gravity sorting device, among the crushed materials of waste home appliances, the crushed material having a specific gravity larger than 1.0 and heavy, and the specific gravity larger than 1.0 and less water repellency. The crushed material is selected on the sinking side. On the other hand, since only the crushed material floating in the water whose total amount has been reduced by the first water specific gravity sorter is supplied to the second water specific gravity sorter where the centrifugal force acts, the centrifugal separation is performed with little overlap between the crushed materials. In water specific gravity sorting, where the force G acts, it is initially separated due to water repellency, or because air bubbles are attached or air is held inside like sponges (simultaneous foamed sponges). The crushed material that could not be obtained can be separated with high accuracy. As a result, it is possible to recover the polypropylene resin from which the crushed material that should be submerged is separated and removed, so that a material suitable for material recycling can be provided..
[0178]
  MaAccording to the invention of claim 2, the first water specific gravity sorting deviceContains copper wire or non-ferrous metalsHeavy specific gravityA first sorting tank that sorts out a specific gravity smaller than this heavy specific gravityMedium specific gravityA second sorting tank that sorts the first sorting tank is provided downstream of the first sorting tank.Therefore, copper wires and aluminum pieces can be recovered as heavy specific gravity without removing parts including copper wires such as motors, compressors, power cords, and internal wiring from waste home appliances before crushing. As a result, it is possible to easily collect copper wires and non-ferrous pieces that have been difficult to sort by conventional methods such as wind sorting and eddy current collecting methods. Moreover, since the crushed material which sinks in water can be sorted into heavy specific gravity and medium specific gravity, the valuable value of the heavy specific gravity can be increased. In addition, since metal contamination in the medium specific gravity can be reduced, it can be provided as a raw material for partial replacement of coke of blast furnace reducing material and an alternative material for boiler fuel.
[0179]
  According to the invention of claim 3,First recovery means on the bottom side of the rotating drumSince a powerful centrifugal force of about 800G can be applied to a lightweight object floating in the water supplied from the preceding water specific gravity separator to the second water specific gravity separator, high precision and high speed sorting is possible. It can be performed. Further, since the dehydrator can be provided integrally with the rotating drum, the dehydrated polypropylene resin can be recovered. In addition, since the vertical centrifugal water specific gravity sorting device (rotational center axis of the rotating drum is in the vertical direction), unbalance is unlikely to occur at the start and stop of operation, and a vibration damping device for rotational vibration is not required. As a result, dehydrated polypropylene resin with high sorting accuracy can be recovered, and can be immediately provided for repellet processing. Further, the vertical centrifugal water specific gravity sorting device can improve the processing capacity of water specific gravity sorting, and can save space of the waste home appliance recycling processing device.
[0180]
  According to the invention described in claim 4, one of the first water specific gravity sorting device and the second water specific gravity sorting device that sorts into at least two types of crushed materials by the specific gravity difference of the crushed materials. More specific gravity sorting equipmentPlaceProvided with a second supply means for supplying light weight and sorted water from the water specific gravity sorting device of the previous process to the water specific gravity sorting device of the next process, so that the third to nth water from the first water specific gravity sorting device. Since the light weight floating in the water is supplied to the second water specific gravity separator through the specific gravity separator, the water specific gravity separator in the first stage of the second water specific gravity separator is used to separate hydrophobic or air bubbles. The medium specific gravity that has been mixed in due to the obstruction factor is gradually removed after the obstruction factor is eliminated, and the amount of crushed material supplied to the water specific gravity separator at the next stage is reduced. As a result, a polypropylene resin with extremely high sorting accuracy can be recovered from the second water specific gravity sorter. In addition, by dividing the collection of crushed material that sinks in the water discharged from each water specific gravity sorting device, it is possible to collect the medium specific gravity materials with different mixed amounts of heavy specific gravity materials. As a result, medium specific gravity can be obtained in accordance with combustion applications such as blast furnace reducing material and boiler fuel.
[0181]
  Further, according to the invention described in claim 5, since the underwater crushing means is provided between the water specific gravity separators, the surface of the crushed material is crushed from about 5 mm to about 10 mm in the sorted water and the friction between the crushed materials during crushing in the water. At this time, the wettability of the surface of the crushed material is also improved. As a result, when supplied to the subsequent water specific gravity sorting apparatus in a finely crushed state, the crushed materials are not easily entangled or overlapped, and the water wettability of the surface is improved, so that the sorting accuracy can be improved. Moreover, since the surface of the crushed material is washed, it is possible to reduce the mixing of foreign matters into the polypropylene resin.
[0182]
  Further, according to the invention described in claim 6, the solid-liquid separation means for separating the crushed material collected from the water specific gravity separator and the sorted water is provided, and the sorted water circulation means is provided in connection with the solid-liquid separation means. Therefore, when collecting the crushed material containing the sorted water selected from the water specific gravity separator, the crushed material and the sorted water can be separated by the solid-liquid separation means, and the sorted crushed material is recovered and separated. The sorted water can be circulated through the water specific gravity sorting device through the sorted water circulation means. Thereby, continuous collection of the crushed material sorted from the water specific gravity sorter and the circulation balance of the selected water of the water specific gravity sorter can be achieved, and continuous sorting can be performed.
[0183]
  According to the seventh aspect of the present invention, the solid-liquid separation means includes a solid-liquid supply means for supplying a mixture of the crushed material and the selected water, and the crushed material and the selected water supplied from the solid-liquid supply means. Solid-liquid separation and conveyance means for conveying the crushed material separated from the separated water and the crushed material conveyed by the solid-liquid separation and conveyance meansBy pneumatic feedingSolid recovery means to recover;SaidSolid-liquid separation transport meansBottom ofProvided inIsCrushed materialAnd a net to separate the sorted waterWhen collecting crushed material containing the selected water selected from the water specific gravity separatorBreakThe crushed material and the sorted water can be separated, and the crushed material with less adherence of the sorted water can be recovered, and the separated sorted water can be circulated to the water specific gravity sorting device via the sorted water circulation means. As a result, an inexpensive solid-liquid separator can continuously collect the crushed material selected from the water specific gravity separator and circulate balance of the selected water in the water specific gravity separator. A resource processing apparatus can be provided.
[0184]
  According to the invention described in claim 8, at least the second stage of either the second recovery means or the solid-liquid separation means of the second specific gravity separator, the dewatering means and the dewatered crushed material are recovered. Since the third recovery means is provided, the crushed material recovered from at least the second recovery means or the solid-liquid separation means is dehydrated by the subsequent dewatering means. Thereby, the dehydrated crushed material can be collected. As a result, when a dehydrator is provided at the next stage of the second recovery means, the recovered polypropylene resin can be recovered immediately in a state where repellet processing can be performed. In addition, when a dehydrator is provided in the next stage of the solid-liquid separator, it is possible to collect plastic that can be shipped immediately as a blast furnace reducing material or boiler fuel.
[0185]
  According to the ninth aspect of the present invention, the next stage of the dewatering means is provided with the wind conveying means, the wind sorting means, and the third collecting means for collecting the ultralight material separated by the wind sorting means. Therefore, after dewatering the crushed material by the dewatering means, the surface of the crushed material can be air-dried when the crushed material is transported to the wind sorting means by the wind conveying means, and it can be taken in the previous process with an ultralight material such as a condenser film. After separating the foreign matter that could not be removed by the wind power sorting device, the ultra-lightweight material can be recovered by the third recovery means. As a result, it is possible to obtain a polypropylene resin from which the condenser film or the like that clogs the screen of the extruder during re-pellet processing and reduces the productivity is removed.
[0186]
  According to the invention described in claim 10, the wind power sorting means is connected to the substantially cylindrical cylindrical body whose central axis is in the substantially vertical direction and the discharge portion at the upper end portion of the cylindrical body, and collects the super lightweight material. A third collection means for removing the light specific gravity material provided at the lower end of the cylinder, and a material provided in the lower part of the cylinder for feeding the raw material into the cylinder in an obliquely upward direction in a substantially tangential direction. Since the second raw material supply means is provided, by the air pumped from the second raw material supply means, it is possible to form a spiral rising air flow along the inner wall of the cylindrical body inside the cylindrical body, The crushed material supplied at the same time is moved in a spiral shape by the spiral rising air flow, and the distance that the crushed material actually moves (distance that moves spirally) can be increased. Etc.) and lightweight objects (the above-mentioned ultralight objects) can be loosened and work on heavy objects It is possible to reduce the overlap of straight direction of gravity and lifting power is able to prolong the residence time in a state of balance heavy and light material, it is possible to improve the separation accuracy. In addition, the inside speed of the cylinder increases as it goes from the central axis to the outer edge, resulting in a swirling upward air flow with a large centrifugal force. Since the force for separating in the horizontal direction acts, the heavy object moves to the outer edge portion by centrifugal force, and the light object has a small centrifugal force so that it becomes the central axis side of the cylinder, so that the separation accuracy can be further improved. . As a result, it is possible to almost completely remove the ultralight material mixed in the polypropylene resin recovered from the water specific gravity separator.
[0187]
  In addition, according to the invention described in claim 11, there is provided a pressure feeding means / wind power supply means for feeding the crushed material and a wind power of the wind sorting means, the outlet of the pressure feeding means / wind supply means is branched, and one end Is connected to the wind power supply side of the wind sorting means, the other end is vented, and the upper part of the wind sorting means is connected to the air intake port of the pumping means / wind power supply means via a third recovery means, Since the inside of the wind power sorting means is in a negative pressure state, a lower part of the wind power sorting means is configured by configuring a circulation path of pumped air with the pressure feeding means / wind power supply means, the wind power sorting means, and the third recovery means as a loop. The air can be brought into a state of being sucked from the selected material discharge portion that discharges the polypropylene resin by gravity. As a result, it is not necessary to suck the upper part of the wind sorting means that discharges ultralight objects with a dust collector as in the past, and high-performance wind sorting can be performed with an inexpensive device to obtain a polypropylene resin with very little foreign matter contamination. Can do. In addition, since the polypropylene resin collection container can be arranged in a non-contact manner with the wind sorting means, the collection container can be easily replaced..
[Brief description of the drawings]
FIG. 1 is a partially cutaway system configuration diagram of a waste home appliance recycling processing apparatus according to a first embodiment of the present invention.
[Fig. 2] A longitudinal sectional view of the centrifugal water specific gravity sorter of the waste home appliance recycling system
FIG. 3 is a partially cutaway system configuration diagram of the waste home appliance recycling processing apparatus according to the second embodiment of the present invention.
FIG. 4 is a partially cutaway system configuration diagram of a waste home appliance recycling processing apparatus according to a third embodiment of the present invention.
FIG. 5 is a partially cutaway system configuration diagram of a waste home appliance recycling processing apparatus according to a fourth embodiment of the present invention.
FIG. 6 is a partially cutaway side view of the solid-liquid separator of the waste home appliance recycling system.
FIG. 7 is a partially cutaway system configuration diagram of a waste home appliance recycling processing apparatus according to a fifth embodiment of the present invention.
FIG. 8 is a system configuration diagram of a main part of a waste home appliance recycling processing apparatus according to a sixth embodiment of the present invention.
FIG. 9 is a partially cutaway perspective view of the wind power sorter of the waste home appliance recycling processing apparatus.
FIG. 10 is a system configuration diagram of a main part of a waste home appliance recycling processing apparatus according to a seventh embodiment of the present invention.
FIG. 11 is a partially cutaway system configuration diagram of a waste home appliance recycling processing apparatus according to an eighth embodiment of the present invention.
FIG. 12 is a partially cutaway system configuration diagram of the waste home appliance recycling processing apparatus according to the ninth embodiment of the present invention.
FIG. 13 is a partially cutaway system configuration diagram of the waste home appliance recycling processing apparatus according to the tenth embodiment of the present invention.
FIG. 14 is a partially cutaway system configuration diagram of the waste home appliance recycling processing apparatus according to the eleventh embodiment of the present invention.
FIG. 15 is a partially cutaway system configuration diagram of a waste home appliance recycling processing apparatus according to a twelfth embodiment of the present invention.
FIG. 16 is a partially cutaway system configuration diagram of the waste home appliance recycling processing apparatus according to the thirteenth embodiment of the present invention.
FIG. 17 is a partially cutaway system configuration diagram of the waste home appliance recycling processing apparatus according to the fourteenth embodiment of the present invention.
FIG. 18 is a partially cutaway system configuration diagram of the waste home appliance recycling processing apparatus according to the fifteenth embodiment of the present invention.
FIG. 19 is a partially cutaway system configuration diagram of the waste home appliance recycling processing apparatus according to the sixteenth embodiment of the present invention.
FIG. 20 is a partially cutaway system configuration diagram of the waste home appliance recycling processing apparatus according to the seventeenth embodiment of the present invention.
FIG. 21 is a partially cutaway system configuration diagram of the waste home appliance recycling processing apparatus according to the eighteenth embodiment of the present invention.
FIG. 22 is a partially cutaway system configuration diagram of the waste home appliance recycling processing apparatus according to the nineteenth embodiment of the present invention.
FIG. 23 is a partially cutaway system configuration diagram of the waste home appliance recycling processing apparatus according to the twentieth embodiment of the present invention.
FIG. 24 is a process flowchart of an example of a conventional waste home appliance recycling processing apparatus.
FIG. 25 is a process flowchart of another example of the conventional waste home appliance recycling processing apparatus.
FIG. 26 is a sectional view of a water specific gravity sorting device of the waste home appliance recycling processing device.
FIG. 27 is a system configuration diagram of a sewage treatment device of the waste home appliance recycling processing device.
[Explanation of symbols]
  42 Flotation type water specific gravity sorter (first water specific gravity sorter)
  43 1st raw material supply part (1st raw material supply means)
  44 Vertical centrifugal water specific gravity sorter (second water specific gravity sorter)
  46 1st pump (1st supply means)
  51 Second pump (sorted water circulation means)

Claims (11)

At least two kinds of crushed materials by the specific gravity difference of the crushed material, the first raw material supply means for supplying the crushed material of the waste home appliances, or the crushed material and the sorted water, and the feedstock from the first raw material supply means A first water specific gravity sorting device, a first supply means for supplying light weight and sorted water to the subsequent process among the at least two types of crushed materials, and a first supply means for feeding from the first supply means. was equipped with a lightweight material and the sorting water the second water gravity sorting device for sorting the crushed and crushed to float on water to sink in water again to a centrifugal force to said second water gravity separation apparatus, vertical A rotating drum having a rotation center axis in the direction and containing sorted water inward, and a cylindrical body that is provided on the rotation center axis of the rotating drum and supplies a mixture of light weight and sorting water into the rotating drum; It is provided on the rotating shaft side of the rotating drum and on the outer side of the cylindrical body to be rotated. And a recovery device for recovering crushed material floating in water, and rotating the rotating drum at a first predetermined rotational speed to generate an air layer around the cylindrical body, thereby crushed material floating in the water. Waste household electrical appliances that collect the crushed material floating in the water with the recovery machine by rotating the recovery machine at a second rotation speed higher than the first predetermined rotation speed. Recycling processing device. The 1st water specific gravity sorter has the 1st sorter which sorts heavy specific gravity containing copper wire or non-ferrous, and the 2nd sort tank which sorts medium specific gravity with specific gravity smaller than this heavy specific gravity The waste home appliance recycling processing apparatus of Claim 1 which provided in the downstream of the said 1st sorting tank . The waste home appliance recycling processing apparatus of Claim 1 or 2 provided with the 1st collection | recovery means at the bottom part side of the rotating drum . A first water gravity separation device, between the second water gravity separation apparatus, one or more water gravity separation equipment for sorting at least two crushed material difference in specific gravity between the crushed provided, prior to step The waste home appliance recycling processing apparatus of any one of Claims 1-3 provided with the 2nd supply means to supply a lightweight thing and sorted water to the water specific gravity sorter of the next process from a water specific gravity sorter.   The waste household appliance recycling processing apparatus of any one of Claims 1-4 provided with the underwater crushing means between water specific gravity sorters.   The solid-liquid separation means which isolate | separates the crushed material collect | recovered from the water specific gravity sorter | sorter and sorted water is provided, and it connects with this solid-liquid separation means, and provided the sorted water circulation means. Waste home appliance recycling processing equipment. The solid-liquid separation means separates the crushed product and the sorted water supplied from the solid-liquid supply means by separating the crushed product and the sorted water, separating the solid-liquid separating and conveying means for conveying a solid recovery means for recovering the feed air pressure crushed conveyed by the solid-liquid separation conveying means, sorting water and the solid-liquid provided at the bottom of the separating conveying means crushed The waste household appliance recycling processing apparatus of Claim 6 provided with the net | network to do .   The dehydrating means and the third collecting means for collecting crushed material dehydrated thereby are provided at the next stage of at least the second collecting means or the solid-liquid separating means of the second specific gravity separator. The waste home appliance recycling processing apparatus of 6.   The waste home appliance recycling processing apparatus according to claim 8, further comprising a wind-power conveying means, a wind-power sorting means, and a third collecting means for collecting an ultralight material separated by the wind-power sorting means, following the dewatering means. .   The wind power sorting means has a substantially cylindrical cylindrical body whose central axis is substantially vertical, a third collecting means connected to the discharge portion at the upper end portion of the cylindrical body, and collecting the ultralight material, and the lower end of the cylindrical body And a second material supply means provided at a lower portion of the cylindrical body for discharging light specific gravity, and a second raw material supply means for pneumatically feeding the raw material into the cylindrical body in a substantially tangential direction obliquely upward. Item 10. A recycling apparatus for waste home appliances according to Item 9.   It is equipped with a pumping means and wind power supply means for supplying the wind force of the crushed material and the wind sorting means. And an upper portion of the wind power sorting means is connected to an air intake port of the pressure feeding means and wind power supply means via a third recovery means, and the inside of the wind power sorting means is in a negative pressure state. The waste home appliance recycling processing apparatus of 9 or 10.

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