KR102562450B1 - Pellet Production Method and apparatus for Using Waste Synthetic Resin - Google Patents

Abstract

The present invention is a pellet manufacturing process using waste synthetic resin. In order to manufacture pellets using waste synthetic resin, the storage step (S100) of storing each waste plastic and each waste vinyl, and crushing the collected waste vinyl in a crushing unit A crushing step (S200), a washing step (S300) of washing the pulverized waste vinyl from foreign substances in a washing unit, a melting step (S400) of removing water from the washed waste vinyl and melting it (S400), and removing foreign substances in the melting step. It is characterized in that it comprises a foreign matter removal step (S500) of removing foreign matter by passing it through a net and an extrusion step (S600) of extruding the melt from which the foreign matter is removed through an extruder to form pellets.

Description

Pellet Production Method and Apparatus for Using Waste Synthetic Resin}

The present invention relates to a pellet manufacturing apparatus and process using waste synthetic resin, and more particularly, to an apparatus for compressing and processing raw materials in the form of pellets so that waste synthetic resin can be collected and recycled, and a pellet manufacturing method using the same.

Plastics are widely used for household items, industrial products such as electric/electronic products and automobile parts, and for agriculture and fisheries such as plastic greenhouses and fishing nets. In particular, vinyl, a type of plastic composite material, is the most commonly used household item in modern society. .

As the usage of these plastic products and vinyls increases, the amount of garbage generated also tends to increase. Plastic wastes do not decompose by natural ability, so they remain intact even when landfilled. When incinerated, not only is it difficult to burn completely, but also toxic gases are generated. In the case of landfilling, secondary environmental pollution may occur from the landfill. .

Korean Patent Registration No. 10-1036948 discloses a treatment method capable of recycling waste plastic, but after removing foreign substances, the plastic pieces are sorted and pulverized with a color sorter. It is difficult to recycle the waste plastic in the form of a powder that has been sorted and pulverized as a raw material. Korean Patent Registration No. 10-1529644 discloses a device that can be manufactured into pellets after removing foreign substances from waste vinyl and then going through a pretreatment process. This is made of pellets regardless of the type of waste vinyl, and there is a difficult problem in recycling.

In relation to recycling technology, a powdering technology capable of removing foreign substances and reducing the size of waste has been disclosed, but a technology that can be supplied as raw materials is required for practical recycling.

KR 10-1036948 B KR 10-1529644 B

The present invention is to solve the above problems, and an object of the present invention is to provide a pellet manufacturing device using waste synthetic resin to increase the recycling rate by processing waste synthetic resin as a raw material and a pellet manufacturing process using the device.

Pellets manufacturing process using waste synthetic resin according to an embodiment of the present invention to achieve the above object In order to manufacture pellets using concealed synthetic resin, a storage step (S100) of storing each waste plastic and waste vinyl, and the collection A crushing step of pulverizing the pulverized waste vinyl in a crushing unit (S200), a washing step of washing the pulverized waste vinyl in a washing unit (S300), and a melting step of melting after removing water from the washed vinyl waste (S400). ), and a foreign matter removal step (S500) of removing foreign matter by passing through a foreign matter removal net in the melting step and extruding the melt from which the foreign matter is removed through an extruder to form pellets. Comprising an extrusion step (S600) It can be formed as a feature.

The washing step includes a first waste vinyl washing step in which foreign substances are washed from the firstly pulverized waste vinyl in a washing unit, and a first wet type in which a plurality of cutter blades are formed on the waste vinyl washed in the first waste vinyl washing step with washing water A first wet grinding step passing through a crushing device, a second washing step in which the waste vinyl crushed in the first wet grinding step and washing water are washed, and the waste vinyl washed in the second washing step together with the washing water and a cutter blade It may be formed by including a second wet grinding step of passing through the plurality of second wet grinding devices and a third washing step of washing the waste vinyl and washing water pulverized in the second wet grinding step.

The washing step may be characterized by including an additional washing review step of reviewing whether additional washing and/or grinding is necessary after going through step-by-step washing and grinding.

Pellet manufacturing apparatus using waste synthetic resin of the present invention releases the bundle state of the waste vinyl stored in the waste vinyl storage unit and the waste vinyl storage unit in order to reuse the waste vinyl, and processes long waste vinyl. A dry crushing unit for crushing to be possible, a dry foreign matter removal unit for separating foreign substances and pulverized waste vinyl in the crushing process, a washing and wet crushing unit for washing and pulverizing the pulverized waste vinyl, and the washed waste vinyl A first melting unit for heating waste vinyl using an electric heater as a heat source; a foreign matter separation unit for removing foreign substances in the melt before being transferred from the first melting unit to the second melting unit; It may be characterized in that it includes a second melting unit for heating the molten liquid for secondary melting and a pellet forming unit for processing the secondary melted waste vinyl into pellets.

The washing and wet grinding unit includes a first cleaning unit that removes foreign substances attached to the waste vinyl using ultrasonic waves in the washing tank, and a cutter having a plurality of cutters formed on the outer circumferential surface to grind the waste vinyl washed in the first cleaning unit together with the washing water A first wet grinding unit including a roll, a second cleaning unit for removing foreign substances from the waste vinyl pulverized in the first wet grinding unit with ultrasonic waves in a washing tank containing washing water, and the waste washed in the second cleaning unit A second wet grinding unit including a cutter roll having a plurality of cutters formed on an outer circumferential surface to grind vinyl together with washing water, and a second wet grinding unit that removes foreign substances by ultrasonic waves from the waste vinyl pulverized in the second wet grinding unit in a washing tank containing washing water. It may include three washing parts, and the first washing part, the second washing part, and the third washing part may be formed to be installed such that the heights of the first washing part, the second washing part, and the third washing part are sequentially lowered.

The washing and wet grinding unit may include a washing review unit for inspecting foreign substances on the pulverized waste vinyl, and the washing review unit may be formed by stacking a plurality of meshes having different meshes.

As described above, since the pellets manufactured by the manufacturing apparatus and the manufacturing process using the apparatus of the present invention can provide waste synthetic resin as a raw material, they can be reprocessed and used in various products.

In addition, the pellet manufacturing process using the waste synthetic resin of the present invention improves the quality of the pellets by removing foreign substances in the washing step and the melting step.

1 is a flowchart of a pellet manufacturing process using waste synthetic resin according to an embodiment of the present invention.
Figure 2 is a flow chart of a pellet manufacturing process specifically described in Figure 1 from washing to melting process.
3 is a configuration diagram for explaining a pellet manufacturing process using waste synthetic resin according to an embodiment of the present invention.
FIG. 4 is an exemplary side view of a washing unit for explaining a washing process in FIG. 3 .

Hereinafter, the present invention will be described with reference to the accompanying drawings. However, the present invention may be embodied in many different forms. Therefore, it is not limited to the embodiment described herein.

Throughout the specification, terms used are only used to describe specific embodiments and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as "comprise" or "having" are intended to indicate that there is a feature, number, step, movement, component, part, or combination thereof described in the specification, but one or more other features or It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

1 is a flowchart of a pellet manufacturing process using waste synthetic resin according to an embodiment of the present invention, and FIG. 2 is a flowchart of a pellet manufacturing process in detail from washing to melting in FIG.

The pellet manufacturing process using waste synthetic resin according to the present invention includes a storage step (S100), a grinding step (S200), a washing step (S300), a melting step (S400), a foreign matter removal step (S420) and an extrusion step (S500). do.

In the storage step (S100), waste vinyl is stored to manufacture pellets using waste synthetic resin. Waste plastic used for agricultural purposes is collected, packaged, and stored for reuse. In the storage step (S100), the waste vinyl may be specifically divided and stored by type or color.

In the crushing step (S200), stored materials are crushed to be processed. In the crushing step (S200), the collected waste vinyl is primarily crushed in a crushing unit. The crushing unit releases the bundled state of the collected waste vinyl and crushes the long waste vinyl so that it can be processed. The shredding unit includes a cutting unit and a transfer unit, and primarily crushes the waste vinyl before washing, and removes foreign materials in a dry state through the dry foreign material removal unit 220 of the crushed waste vinyl.

The washing step (S300) includes a first waste vinyl washing step (S310), a second washing step (S330), and a third washing step (S350) in which foreign substances are washed from the firstly pulverized waste vinyl in the washing unit. In addition, the washing step (S300) further includes a step of wet grinding the waste vinyl. In the wet grinding, the waste vinyl washed in the first waste vinyl washing step (S310) passes through a first wet grinding device having a plurality of cutter blades before being transferred together with the washing water to the second washing step (S330). First wet grinding Secondary wet grinding step in which the waste vinyl washed in steps S320 and second washing step S330 passes through a second wet grinding device having a plurality of cutter blades before being transferred together with washing water to the third washing step S350 (S340) is included.

The washing step (S300) includes an additional washing review step (S360) of reviewing whether additional washing and/or grinding is necessary after step-by-step washing and grinding. The additional washing review step (S360) includes stacking at least two to four nets so as to select the particle size of the pulverized waste vinyl. In addition, in the additional washing review step (S360), a plurality of meshes having different meshes may be stacked. Further, in the additional washing review step (S360), additional washing is performed according to the degree of suspended matter in a state in which the pulverized waste vinyl and washing water are mixed.

In addition, the washing step (S300) includes a dehydration step (S370) of separating the pulverized waste vinyl and washing water. The dewatering step (S370) includes a dehydration net, and the pulverized waste vinyl and washing water are separated using centrifugal force or gravity based on the dehydration net.

The washing step (S300) includes a drying step (S380) of drying the waste vinyl dehydrated in the dehydration step (S370) to remove moisture from the pulverized waste vinyl.

The melting step (S400) includes a first melting step (S410) of first melting the waste vinyl from which water is removed and a second melting step (S430) of second melting with foreign substances removed. The melting process may be repeated 2 to 3 times.

In the foreign matter removal step (S420), the foreign matter is sequentially removed by passing through a foreign material removal net in the process of moving from the first melting (S410) to the second melting (S430). The foreign matter removal net filters out foreign substances and lumps formed during the melting process according to the thickness of the net or the size of the groove of the net. The molten liquid that has passed through the foreign matter removal net functions to increase the purity of the raw material of the waste vinyl.

In the extrusion step (S500), the melt is extruded through an extruder to form pellets. After passing through the extruder, it is cooled and molded into pellets at the same time.

In addition, FIG. 3 is a configuration diagram for explaining a pellet manufacturing process using waste synthetic resin according to an embodiment of the present invention, and FIG. 4 is an exemplary side view of a washing unit for explaining a washing process in FIG. 3 .

In the pellet manufacturing process 1000 using the waste synthetic resin, the waste vinyl storage unit 100, dry crushing unit 200, dry foreign matter removal unit 220, washing and wet grinding unit 300, dewatering unit 370, It includes a drying unit 380, a first melting unit 410, a foreign matter separation unit 420, a second melting unit 430 and a pellet forming unit 500.

The pellet manufacturing process 1000 using the waste synthetic resin includes a waste vinyl storage unit 100 in which the waste vinyl 10 is stored for reuse. The waste vinyl storage unit 100 shows a state in which the collected plastic waste is packaged and stored in a separate space such as a warehouse.

The dry crushing unit 200 releases the bundled state of the waste vinyl 10 and crushes the long waste vinyl to be processed. It includes a dry foreign matter removal unit 220 to primarily separate foreign substances during the crushing process. The dry foreign matter removal unit 220 includes a foreign material discharge unit at the bottom, and the pulverized waste vinyl is washed and transferred to the wet grinding unit 300 at the top.

The washing and wet grinding unit 300 includes a first washing unit 310, a second washing unit 320, a third washing unit 330, a first wet grinding unit 340, and a second wet grinding unit 350. ), a washing review unit 360, a dewatering unit 370 and a drying unit 380.

The first washing part 310, the second washing part 320, and the third washing part 330 each include a washing tank and a transfer part. A plurality of protrusions (not shown) are formed in the washing tub to separate water and foreign substances from the waste vinyl. The conveying part is formed as a conveyor belt so that the waste vinyl can be moved in the washing tank. 2 to 5 washing tanks may be continuously formed.

The first washing unit 310 stores washing water in the washing tank 311 to soak foreign substances in the waste vinyl, and then stops driving the transfer unit for 2 to 4 hours to wash. In addition, the washing tank 311 includes a washing water supply unit 313 to supply washing water. The first washing unit 310 includes a mixing unit 315 including a plurality of protrusions in the washing tub 311 and a plurality of wings to change the position of waste vinyl. While changing the top/bottom/left/right position of the waste vinyl in the mixing unit 315, large foreign substances fall off, and the foreign matter is sufficiently immersed in water, and when the position is changed, a plurality of protrusions scrape the waste vinyl to remove the foreign matter. Let it be. In addition, the mixing unit 315 puts the waste vinyl pieces transferred from the transfer unit into the first wet grinding unit 340 .

The first cleaning unit 310 further includes an ultrasonic generator at one side of the cleaning tub. The ultrasonic generators 317 and 318 remove foreign substances attached to the waste vinyl to the end using ultrasonic waves in the washing tank. The ultrasonic generators 317 and 318 facilitate movement to the first wet grinding unit 340 by simultaneously washing the waste vinyl with the washing water and floating the waste vinyl to the top of the washing water according to the installation position.

The first wet grinding unit 340 includes a grinding housing 341, a cutter roll 343, and a cutter 345. In the first wet grinding unit 340, the waste vinyl washed in the first washing unit 310 is moved together with the washing water to the crushing housing 341, and the waste vinyl is additionally crushed. The crushing housing 341 includes a cutter roll 343 having a plurality of cutters 345 formed on an outer circumferential surface thereof. The cutter roll 343 facilitates the movement of the pulverized waste vinyl along with the washing water through rotation, and the plurality of cutters 345 additionally pulverize the waste vinyl according to the direction of rotation. The crushing housing 341 transfers the waste vinyl crushed by the cutter 345 to the second cleaning unit 320 for additional cleaning.

The second cleaning unit 320 and the third cleaning unit 330 have the same configuration and function as the first cleaning unit 310 . Accordingly, redundant description of the same configuration will be omitted. The first washing part 310, the second washing part 320, and the third washing part 330 are installed at different heights. The first cleaning part 310 is the highest and is installed to be lowered sequentially.

The second wet grinding unit 350 has the same configuration as the first wet grinding unit 340 and performs the same function. Accordingly, redundant description of the same configuration will be omitted. The first wet grinding unit 340 is installed between the first washing unit 310 and the second washing unit 320, and the second wet grinding unit 350 is installed between the second washing unit 320 and the third washing unit 320. It is installed between the cleaning parts 330.

The washing review unit 360 inspects foreign substances on the pulverized waste vinyl. The washing review unit 360 includes a plurality of nets. At this time, the plurality of nets may be stacked with different meshes. The washing review unit 360 removes suspended matter that has not yet been removed through a net and removes finely pulverized waste vinyl to prevent malfunction of the device. In addition, the washing review unit 360 supplies washing water containing pulverized waste vinyl to the first washing unit 310, the second washing unit 320, and the third washing unit so that additional washing can be performed according to the amount of floating fire. It includes an additional washing furnace (not shown) for transferring to one of the steps of the unit 330 . The additional washing path may be a conduit connecting a side surface of the washing review unit 360 and a side surface of each washing tank of the first washing unit 310, the second washing unit 320, and the third washing unit 330, The movement of the washing water may be controlled by controlling the inlet formed on the side of the washing review unit 360 .

The dewatering unit 370 separates washing water and waste vinyl. The dewatering unit 370 includes a conveyor belt to transfer the waste vinyl while separating it from the washing water. In addition, the dewatering unit 370 includes a dewatering drum that separates waste vinyl and washing water by rotation and collects the waste vinyl.

The drying unit 380 dries the washed waste vinyl with high-temperature wind. The drying unit 380 may be formed such that the waste vinyl pieces are moved together with drying by injecting high-temperature wind into the cylindrical mesh drum.

The first melting unit 410 melts and melts the dried piece of waste vinyl. The first melting unit 410 includes heating waste vinyl using an electric heater as a heat source. The first melting unit 410 includes a foreign material separation unit 420 to remove foreign materials. The foreign matter separation unit 420 removes foreign matter in the melted waste vinyl by allowing it to pass through a foreign material removal net in the process of being transferred from the first melting unit 410 to the second melting unit 430 for secondary melting. The foreign matter removal net filters out foreign substances and lumps formed during the melting process according to the thickness of the net or the size of the groove of the net. The molten liquid that has passed through the foreign matter removal net functions to increase the purity of the raw material of the waste vinyl.

The second melting unit 430 secondly melts the waste vinyl from which foreign substances are removed after the first melting. Since the second fusion part 430 has the same configuration as the first fusion part 410 and has the same function, duplicate descriptions will be omitted. The second melting unit 430 may further include a foreign matter separation unit 420 in the process of transferring the melt to the pellet forming unit 500.

The pellet forming unit 500 includes an extruder. In the pellet forming unit 500, the melt is discharged in the form of a yarn having a certain thickness through a molding frame, which is an extruder, and then cooled in cooling water and cut into pellets at the same time.

As described above, the present invention provides a device for processing raw materials in the form of pellets and a processing method using the device so that waste synthetic resin, which is waste vinyl, can be collected and recycled. The present invention is for removing foreign substances from waste vinyl, such as a washing unit, a wet grinding unit, and a foreign material separation unit, and can improve the quality of pellets processed from raw materials.

In addition, the description of the present invention described above is for illustrative purposes, and those skilled in the art can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. There will be. Therefore, the embodiments described above should be understood as illustrative in all respects and not limiting. For example, each component described as a single type may be implemented in a dispersed or divided manner, and similarly, components described as distributed or divided may be implemented in a combined form within the understanding of a person skilled in the art. there is.

The scope of the present invention is indicated by the following claims, and all changes or modifications derived from the meaning and scope of the claims and equivalent concepts should be interpreted as being included in the scope of the present invention.

Claims (6)

A storage step of storing the waste synthetic resin by waste plastic and waste vinyl;
A crushing step of crushing the collected waste vinyl in a crushing unit;
A washing step of washing the pulverized waste vinyl in a washing unit to remove foreign substances;
A melting step of melting after removing moisture from the washed waste vinyl;
A foreign matter removal step of removing foreign matter by passing it through a foreign matter removal net in the melting step; and
An extrusion step of extruding the melt from which the foreign substances are removed through an extruder to form pellets,
The washing step
a first waste vinyl washing step of washing foreign substances from the firstly pulverized waste vinyl in a washing unit;
a first wet grinding step of passing the waste vinyl washed in the first waste vinyl washing step together with washing water through a first wet grinding device having a plurality of cutter blades;
a second washing step in which the waste vinyl and washing water pulverized in the first wet grinding step are washed;
a second wet grinding step of passing the waste vinyl washed in the second washing step together with washing water through a second wet grinding device having a plurality of cutter blades; and
And a third washing step in which the waste vinyl and washing water pulverized in the second wet grinding step are washed,
In the washing step, at least 2 to 4 nets are stacked to mix the pulverized waste vinyl and washing water so as to select the size of the pulverized waste vinyl particles to examine whether additional washing and/or pulverization is required after step-by-step washing and pulverization. Pellets manufacturing process using waste synthetic resin, characterized in that it comprises an additional washing review step to perform additional washing to the extent of suspended matter in a state of being.


delete delete A waste plastic storage unit stored for reuse of waste plastic;
a dry crushing unit that releases the bundled state of the waste vinyl stored in the waste vinyl storage unit and pulverizes the long waste vinyl to be processed;
a dry foreign matter removal unit separating the foreign matter from the pulverized waste vinyl during the crushing process;
a washing and wet pulverizing unit for washing and pulverizing the pulverized waste vinyl;
a first melting unit for heating the washed waste vinyl using an electric heater as a heat source;
a foreign matter separation unit for removing foreign substances in the melt before being transferred from the first melting unit to the second melting unit;
a second melting unit for heating the molten liquid from which foreign materials are removed in the foreign material separation unit for secondary melting; and
A pellet forming unit for processing the secondary melted waste vinyl into pellets,
The washing and wet grinding unit
A first cleaning unit that removes foreign substances adhering to the waste vinyl using ultrasonic waves in the cleaning tub;
a first wet grinding unit including a cutter roll having a plurality of cutters formed on an outer circumferential surface to grind the waste vinyl washed in the first washing unit together with the washing water;
a second cleaning unit that removes foreign substances from the waste vinyl pulverized in the first wet grinding unit using ultrasonic waves in a washing tank containing washing water;
a second wet grinding unit including a cutter roll having a plurality of cutters formed on an outer circumferential surface to grind the waste vinyl washed in the second cleaning unit together with the washing water;
A third cleaning unit for removing foreign substances from the waste vinyl pulverized in the second wet grinding unit with ultrasonic waves in a washing tank containing washing water;
The first washing part, the second washing part, and the third washing part are installed so that the heights are sequentially lowered with a height difference,
The washing and wet grinding unit includes a washing review unit for inspecting foreign substances on the pulverized waste vinyl,
The washing review unit is a pellet manufacturing device using waste synthetic resin, characterized in that for performing additional washing to the extent of floating matter in a state where 2 to 4 nets with different meshes are stacked and pulverized waste vinyl and washing water are mixed.

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