CN110548429B - Solid-liquid mixing equipment for preparing superfine slurry and mixing method thereof - Google Patents
Solid-liquid mixing equipment for preparing superfine slurry and mixing method thereof Download PDFInfo
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- CN110548429B CN110548429B CN201910897565.7A CN201910897565A CN110548429B CN 110548429 B CN110548429 B CN 110548429B CN 201910897565 A CN201910897565 A CN 201910897565A CN 110548429 B CN110548429 B CN 110548429B
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- 239000007788 liquid Substances 0.000 title claims abstract description 66
- 238000002156 mixing Methods 0.000 title claims abstract description 41
- 239000002002 slurry Substances 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000000227 grinding Methods 0.000 claims abstract description 101
- 239000000463 material Substances 0.000 claims abstract description 51
- 239000006185 dispersion Substances 0.000 claims abstract description 47
- 239000007787 solid Substances 0.000 claims abstract description 35
- 230000003068 static effect Effects 0.000 claims abstract description 30
- 230000007246 mechanism Effects 0.000 claims abstract description 21
- 239000002245 particle Substances 0.000 claims description 23
- 230000009471 action Effects 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000000605 extraction Methods 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 5
- 230000001154 acute effect Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 2
- 238000007670 refining Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012824 chemical production Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/50—Mixing liquids with solids
- B01F23/53—Mixing liquids with solids using driven stirrers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/83—Mixing plants specially adapted for mixing in combination with disintegrating operations
- B01F33/831—Devices with consecutive working receptacles, e.g. with two intermeshing tools in one of the receptacles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/836—Mixing plants; Combinations of mixers combining mixing with other treatments
- B01F33/8361—Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating
- B01F33/83613—Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating by grinding or milling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention relates to a solid-liquid mixing device for preparing superfine slurry and a mixing method thereof, the mixing device comprises a dispersing cylinder, a rotating shaft, a grinding mechanism and a fixed sleeve, wherein the dispersing cylinder comprises an upper cover, a lower cover and a side wall positioned between the upper cover and the lower cover, and a liquid feed inlet, a solid feed inlet and a discharge outlet are arranged on the dispersing cylinder; a spiral auger and a dispersion disc are fixedly arranged on the rotating shaft, the spiral auger is positioned in the fixed sleeve, and the dispersion disc is positioned above the fixed sleeve; the grinding mechanism comprises a movable grinding disc and a static grinding disc positioned below the movable grinding disc, and the movable grinding disc and the static grinding disc rub against each other to grind materials. The solid-liquid mixing equipment disclosed by the invention is simple in structure, reasonable in design, simple in use and operation and convenient to maintain, can be used for fully grinding and refining materials, and can be used for rapidly preparing superfine slurry.
Description
Technical Field
The invention relates to mixing equipment, in particular to solid-liquid mixing equipment for preparing superfine slurry and a mixing method thereof.
Background
In chemical production, it is often necessary to thoroughly mix solid particles with a liquid for reuse. In the slurry production process of mixing solid particles such as water-based color paste and coal water slurry with liquid, the premixed slurry formed by mixing powder and liquid is generally subjected to superfine processing such as grinding to obtain superfine slurry, in the premixed slurry, the stability, density, post-processing performance and the like of the premixed slurry are greatly influenced by the oversized solid particles, and how to form the premixed slurry with smaller particle size distribution through mixing is an important problem in solid-liquid mixing equipment. However, most of the existing mixing devices have only one mixing function, cannot grind and refine materials, and the materials are required to be fully mixed in the mixing device and then refined by using a grinding device, so that two devices are required to be purchased, and the working procedure is long.
For example, patent publication No. CN108940032 discloses that a dispersing device is provided with a dispersing device, and a spiral lifting auger is provided with dispersing protrusions, but the dispersing device plays a role in dispersing materials, and cannot finely grind and refine solid particles; the patent with publication number CN107313276 discloses a dispersing device, although the dispersing device is provided, the diameters of a sleeve and a spiral auger from bottom to top are consistent, a disc is in a horizontal state, the structures are not beneficial to the rapid flow of materials, the dispersing effect is weakened, and the materials in the horizontal state are easy to leak out from the grinding disc, so that long-time grinding cannot be performed; U.S. patent publication No. US7618181 discloses a device for dispersing pigments in an aqueous or oily system, which is characterized in that a slurry containing pigments and resins which are preliminarily mixed and dispersed is pumped into another mixing and dispersing device through a vacuum pump and a pipeline to be dispersed again, and although the slurry with good dispersing effect and small particle size distribution can be obtained, the production process and equipment are too complex.
Disclosure of Invention
In order to overcome the defects, the invention provides a solid-liquid mixing device for preparing superfine slurry, wherein a grinding mechanism is arranged in the mixing device, so that materials are ground while being mixed, and the superfine slurry is prepared.
The technical scheme adopted by the invention for solving the technical problems is as follows:
The solid-liquid mixing equipment for preparing the superfine slurry comprises a dispersing cylinder, a rotating shaft, a grinding mechanism and a fixed sleeve, wherein the dispersing cylinder comprises an upper cover, a lower cover and a side wall positioned between the upper cover and the lower cover, and a liquid feed inlet, a solid feed inlet and a discharge outlet are arranged on the dispersing cylinder;
The rotating shaft is positioned in the dispersing cylinder, the upper end of the rotating shaft extends out of the dispersing cylinder and is connected with the driving mechanism, the fixed sleeve is positioned in the dispersing cylinder, the bottom of the fixed sleeve is fixedly connected with the bottom of the dispersing cylinder, a plurality of feeding through holes are formed near the bottom of the fixed sleeve, a plurality of overflow ports are formed in the top of the fixed sleeve, a spiral auger and a dispersing disc are fixedly arranged on the rotating shaft, the spiral auger is positioned in the fixed sleeve, and the dispersing disc is positioned above the fixed sleeve;
The grinding mechanism comprises a movable grinding disc and a static grinding disc positioned below the movable grinding disc, the movable grinding disc is fixedly connected to the lower side of the dispersing disc through a plurality of fixing rods, a certain gap is formed between one end of the movable grinding disc and the outer side of the fixing sleeve to form a first slit, one end of the static grinding disc is fixedly connected to the outer side of the fixing sleeve, a certain gap is formed between the other end of the static grinding disc and the side wall of the dispersing sleeve to form a second slit, and the movable grinding disc and the static grinding disc are rubbed with each other to grind materials.
Preferably, the center of the dispersion disc is fixedly connected to the rotating shaft, a certain gap exists between the edge of the dispersion disc and the side wall of the dispersion cylinder, the whole dispersion disc is obliquely arranged, and the horizontal plane of the center of the dispersion disc is higher than that of the edge.
Preferably, the fixing sleeve is of a cylindrical structure, the diameter of the fixing sleeve gradually decreases from bottom to top, and the spiral auger is of a spiral structure, and the diameter of the fixing sleeve gradually decreases from bottom to top.
Preferably, the included angle between the movable millstone and the horizontal plane is an acute angle, and the static millstone and the movable millstone are arranged in parallel.
Preferably, the included angle between the movable grinding disc and the horizontal plane is less than or equal to 30 degrees, the lower surface of the movable grinding disc is provided with a plurality of first grinding protrusions, the upper surface of the static grinding disc is provided with a plurality of second grinding protrusions, and the first grinding protrusions and the second grinding protrusions are arranged in a staggered mode.
Preferably, the liquid feed inlet and the solid feed inlet are arranged on the side wall of the dispersing cylinder, and the liquid feed inlet is positioned above the solid feed inlet.
Preferably, the liquid feed inlet is located on the side wall of the dispersion cylinder above the edge of the dispersion plate, and the solid feed inlet is located on the side wall of the dispersion cylinder between the edge of the dispersion plate and the movable millstone.
Preferably, the discharge hole is positioned at the bottom of the dispersing cylinder, and a valve is arranged on the discharge hole.
Preferably, a pressure gauge, an extraction opening and an observation opening are arranged on the upper cover of the dispersing cylinder.
The invention also provides a mixing method of the solid-liquid mixing equipment, which comprises the following steps:
s1: the driving mechanism is started to drive the rotating shaft to rotate, liquid enters the dispersing cylinder from the liquid feeding port and falls onto the dispersing disc, and the dispersing disc drives the liquid to rotate along with the rotation of the rotating shaft to form a water curtain and has a certain speed;
s2: solid particles enter the dispersion cylinder from the solid feed inlet and are premixed with the falling liquid, and the solid particles are blocked from suspending above the dispersion cylinder due to a water curtain formed by the liquid on the dispersion plate;
s3: the materials formed by the solid particles and the liquid fall onto the movable millstone and flow onto the static millstone along the first slit under the action of gravity;
S4: grinding the materials under the action of the first grinding bulge and the second grinding bulge, and enabling the materials to flow out from the second slit and fall to the bottom of the dispersing cylinder along with the increase of pressure, and enter the inside of the fixed sleeve through the feeding through hole;
S5: the spiral auger lifts the material upwards, and the material flow speed is increased and is sprayed outwards from an overflow port of the fixed sleeve along with the gradual reduction of the diameters of the fixed sleeve and the spiral auger;
s6: the material is splashed onto the movable millstone, flows onto the static millstone through the first slit, grinds the material under the action of the first grinding protrusion and the second grinding protrusion, and because the inclined arrangement of the movable millstone and the static millstone increases the grinding time of the material, the solid with larger particles can be ground for a long time to be thinned because of the gravity acting on the lower end of the static millstone, then flows to the bottom of the dispersing cylinder from the second slit, flows into the fixed sleeve through the feeding through hole, is lifted by the spiral auger to be dispersed and ground again, and the step is repeated;
S7: after the particle size of the material reaches a preset value, the driving mechanism is closed, the rotating shaft stops rotating, the valve is opened, and the material is discharged from the discharge hole.
The beneficial effects of the invention are as follows: the grinding mechanism is arranged in the invention, so that materials can be ground while being mixed, and superfine slurry is obtained; in the invention, the diameters of the fixed sleeve and the spiral auger are gradually reduced from bottom to top, and the material flow speed is increased, so that the mixing effect is improved; the dispersing disc is arranged at the center and the edge bottom, so that on one hand, liquid is rotationally dispersed during liquid feeding to accelerate the liquid flowing speed, meanwhile, a water curtain is formed to avoid the flying of solid particles, and on the other hand, the upward ejection of materials from the fixed sleeve nozzle is avoided; the grinding mechanism is obliquely arranged, so that the grinding time of the materials is increased, and the materials are fully ground. The solid-liquid mixing equipment disclosed by the invention is simple in structure, reasonable in design, simple in use and operation and convenient to maintain, can be used for fully grinding and refining materials, and can be used for rapidly preparing superfine slurry.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is a cross-sectional view of a retaining sleeve according to the present invention;
In the figure: 10-dispersing cylinder, 11-liquid feed inlet, 12-solid feed inlet, 13-discharge outlet, 14-valve, 15-upper cover, 16-manometer, 17-extraction opening, 18-observation opening, 20-rotating shaft, 21-spiral auger, 22-driving mechanism, 30-dispersing disc, 31-fixed rod, 40-grinding mechanism, 41-movable grinding disc, 42-static grinding disc, 43-first grinding protrusion, 44-second grinding protrusion, 45-first slit, 46-second slit, 50-fixed sleeve, 51-overflow opening, 52-feeding through hole.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the application described herein may be capable of being practiced otherwise than as specifically shown or described. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Spatially relative terms, such as "above … …," "above … …," "upper surface on … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Examples: as shown in fig. 1 to 3, a solid-liquid mixing apparatus for preparing ultra-fine slurry comprises a dispersion cylinder 10, a rotating shaft 20, a grinding mechanism 40 and a fixing sleeve 50, wherein the dispersion cylinder 10 comprises an upper cover 15, a lower cover and a side wall positioned between the upper cover and the lower cover, and a liquid feed inlet 11, a solid feed inlet 12 and a discharge outlet 13 are arranged on the dispersion cylinder 10;
The rotating shaft 20 is positioned in the dispersing cylinder, the upper end of the rotating shaft extends out of the dispersing cylinder and is connected with the driving mechanism 22, the driving mechanism is a motor in the embodiment, the fixed sleeve 50 is positioned in the dispersing cylinder, the bottom of the fixed sleeve is fixedly connected with the bottom of the dispersing cylinder 10, a plurality of feeding through holes 52 are formed near the bottom of the fixed sleeve 50, materials can conveniently enter the fixed sleeve, a plurality of overflow ports 51 are formed in the top of the fixed sleeve, the materials can conveniently splash onto the movable millstone from the fixed sleeve, a spiral auger 21 and a dispersing disc 30 are fixedly arranged on the rotating shaft 20, the spiral auger is positioned in the fixed sleeve 50, the distance between two sides of the spiral auger and the fixed sleeve is 1-5mm, the dispersing disc 30 is positioned above the fixed sleeve 50, 8 feeding through holes 52 are formed near the bottom of the fixed sleeve 50 in the embodiment, and 4 overflow ports 51 are formed in the top of the fixed sleeve. The rotating shaft is connected with a motor, and the motor drives the rotating shaft to rotate to drive the dispersion disc, the movable millstone and the rotary auger to rotate;
The grinding mechanism 40 comprises a movable grinding disc 41 and a static grinding disc 42 positioned below the movable grinding disc, the movable grinding disc 41 is fixedly connected to the lower part of the dispersing disc through a plurality of fixing rods 31, a certain gap is formed between one end of the movable grinding disc and the outer side of the fixing sleeve to form a first slit 45, the number of the fixing rods 31 is 4, one end of the static grinding disc 42 is fixedly connected to the outer side of the fixing sleeve 50, a certain gap is formed between the other end of the static grinding disc 42 and the side wall of the dispersing cylinder to form a second slit 46, the gaps between the first slit, the second slit and the movable grinding disc and the dispersing cylinder can be 1-10mm, the movable grinding disc 41 and the static grinding disc 42 rub against each other to grind materials, in the embodiment, the first slit 45 between the outer side of the fixing sleeve at one end of the movable grinding disc 41 is 5mm, the distance between the other end of the movable grinding disc and the dispersing cylinder 10 is 3mm, and the second slit 46 between the other end of the movable grinding disc 42 and the dispersing cylinder is 5mm.
The center of the dispersion disc 30 is fixedly connected to the rotating shaft 20, a certain gap exists between the edge of the dispersion disc 30 and the side wall of the dispersion cylinder, the dispersion disc 30 is obliquely arranged as a whole, the horizontal plane of the center of the dispersion disc is higher than that of the edge, namely, the center of the dispersion disc is high, the edge of the dispersion disc is low, on one hand, the liquid is rotationally dispersed during liquid feeding to accelerate the liquid flowing speed, meanwhile, a water curtain is formed to avoid the flying of solid particles, on the other hand, the material from the nozzle of the fixed sleeve is prevented from being ejected upwards, a certain interval exists between the edge of the dispersion disc and the inner wall of the dispersion cylinder, the liquid is convenient to enter, and the liquid can be particularly set to be 1-10mm. The fixing sleeve 50 is in a cylindrical structure, the diameter of the fixing sleeve is gradually reduced from bottom to top, the spiral auger 21 is in a spiral structure, and the diameter of the fixing sleeve is gradually reduced from bottom to top, so that the flow speed of materials is gradually increased to strengthen the mixing effect.
As shown in fig. 2, the included angle between the movable grinding disc 41 and the horizontal plane is an acute angle, the static grinding disc 42 and the movable grinding disc 41 are arranged in parallel, more preferably, the included angle between the movable grinding disc 41 and the horizontal plane is less than or equal to 30 °, in this embodiment, the included angle between the movable grinding disc 41 and the horizontal plane is 15 °, the lower surface of the movable grinding disc 41 is provided with a plurality of first grinding protrusions 43, the upper surface of the static grinding disc is provided with a plurality of second grinding protrusions 44, and the first grinding protrusions 43 and the second grinding protrusions 44 are arranged in a staggered manner.
The liquid feed inlet 11 and the solid feed inlet 12 are provided with the side wall of the dispersion barrel, the liquid feed inlet 11 is located above the solid feed inlet 12, specifically, the liquid feed inlet 11 is located on the side wall of the dispersion barrel above the edge of the dispersion disc, the solid feed inlet 12 is located on the side wall of the dispersion barrel between the edge of the dispersion disc and the movable millstone, the liquid feed inlet can be provided with a filtering device, so that the liquid can be filtered and filtered for impurity before entering the dispersion barrel, the solid feed inlet 12 can be connected with a spiral conveying device with a crushing device, the solid particles can be primarily crushed, the discharge outlet 13 is located at the bottom of the dispersion barrel, and the discharge outlet is provided with a valve 14, so that the particle size of the material can be discharged when meeting the requirements and the solid-liquid mixing uniformity. The upper cover 15 of the dispersing cylinder is provided with a pressure gauge 16, an extraction opening 17 and an observation opening 18, the pressure gauge can monitor the pressure inside the dispersing cylinder, and when the pressure is large, gas can be extracted from the extraction opening. The observation port is convenient for monitoring the dispersion condition, the equipment running state and the like in the dispersion barrel.
The mixing method comprises the following steps: the method comprises the following steps:
s1: the motor is started to drive the rotating shaft 20 to rotate, liquid enters the dispersing cylinder 10 from the liquid feed port 11 and falls onto the dispersing disc 30, and the dispersing disc 30 drives the liquid to rotate along with the rotation of the rotating shaft 20 to form a water curtain and has a certain speed;
S2: solid particles enter the dispersion cylinder 10 from the solid feed port 12 and are premixed with the falling liquid, and the solid particles are blocked from suspending above the dispersion cylinder 10 due to a water curtain formed by the liquid on the dispersion plate;
s3: the material formed by the solid particles and the liquid falls onto the movable millstone 41 and flows onto the static millstone 42 along the first slit 45 under the action of gravity;
S4: the materials are ground under the action of the first grinding protrusions 43 and the second grinding protrusions 44, and the materials flow out of the second slits 46 to fall to the bottom of the dispersing cylinder 10 along with the increase of pressure, and enter the inside of the fixed sleeve 50 through the feeding through holes 52;
s5: the spiral auger 21 lifts the material upward, and as the diameters of the fixed sleeve 50 and the spiral auger 21 gradually decrease, the material flow speed increases and is ejected outwards from the overflow port 51 of the fixed sleeve 50;
S6: the material is splashed onto the movable millstone 41, flows onto the static millstone 42 through the first slit 45, is ground under the action of the first grinding protrusion 43 and the second grinding protrusion 44, the grinding time of the material is prolonged due to the inclined arrangement of the movable millstone 41 and the static millstone 42, the solid with larger particles can be ground for a long time due to the gravity acting on the lower end of the static millstone 42 to be refined, then flows to the bottom of the dispersing cylinder 10 from the second slit 46, flows into the fixed sleeve 50 through the feeding through hole 52, is lifted by the spiral auger 21 to be dispersed and ground again, and the step is repeated;
S7: after the particle size of the material reaches a preset value, the motor is turned off, the rotating shaft stops rotating, the valve 14 is opened, and the material is discharged from the discharge hole 13; during operation of the device, the pressure gauge 16 on the upper cover 15 monitors the pressure inside the dispersion cylinder 10, and when the pressure exceeds a predetermined value, air is extracted from the extraction opening 17; the dispersion state, the device operation state, etc. inside the dispersion cylinder 10 can be monitored through the observation port 18.
It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (10)
1. A solid-liquid mixing device for preparing superfine slurry is characterized in that: the device comprises a dispersing cylinder (10), a rotating shaft (20), a grinding mechanism (40) and a fixed sleeve (50), wherein the dispersing cylinder (10) comprises an upper cover (15), a lower cover and side walls positioned between the upper cover and the lower cover, and a liquid feeding port (11), a solid feeding port (12) and a discharging port (13) are arranged on the dispersing cylinder (10);
The rotating shaft (20) is positioned in the dispersing cylinder, the upper end of the rotating shaft extends out of the dispersing cylinder and is connected with the driving mechanism (22), the fixed sleeve (50) is positioned in the dispersing cylinder, the bottom of the fixed sleeve is fixedly connected with the bottom of the dispersing cylinder (10), a plurality of feeding through holes (52) are formed near the bottom of the fixed sleeve (50), a plurality of overflow ports (51) are formed in the top of the fixed sleeve, a spiral auger (21) and a dispersing disc (30) are fixedly arranged on the rotating shaft (20), the spiral auger is positioned in the fixed sleeve (50), and the dispersing disc (30) is positioned above the fixed sleeve (50);
The grinding mechanism (40) comprises a movable grinding disc (41) and a static grinding disc (42) positioned below the movable grinding disc, the movable grinding disc (41) is fixedly connected to the lower portion of the dispersing disc through a plurality of fixing rods (31), a certain gap is formed between one end of the movable grinding disc and the outer side of the fixing sleeve to form a first slit (45), one end of the static grinding disc (42) is fixedly connected to the outer side of the fixing sleeve (50), a certain gap is formed between the other end of the static grinding disc and the side wall of the dispersing cylinder to form a second slit (46), and the movable grinding disc (41) and the static grinding disc (42) rub each other to grind materials.
2. The solid-liquid mixing apparatus for preparing ultrafine slurry according to claim 1, wherein: the center of the dispersion disc (30) is fixedly connected to the rotating shaft (20), a certain gap exists between the edge of the dispersion disc and the side wall of the dispersion cylinder, the whole dispersion disc (30) is obliquely arranged, and the horizontal plane of the center of the dispersion disc is higher than that of the edge.
3. The solid-liquid mixing apparatus for preparing ultrafine slurry according to claim 1, wherein: the fixing sleeve (50) is of a cylindrical structure, the diameter of the fixing sleeve is gradually reduced from bottom to top, and the spiral auger (21) is of a spiral structure, and the diameter of the fixing sleeve is gradually reduced from bottom to top.
4. The solid-liquid mixing apparatus for preparing ultrafine slurry according to claim 1, wherein: the included angle between the movable millstone (41) and the horizontal plane is an acute angle, and the static millstone (42) and the movable millstone (41) are arranged in parallel.
5. The solid-liquid mixing apparatus for preparing ultrafine slurry according to claim 4, wherein: the included angle between the movable grinding disc (41) and the horizontal plane is less than or equal to 30 degrees, a plurality of first grinding protrusions (43) are arranged on the lower surface of the movable grinding disc (41), a plurality of second grinding protrusions (44) are arranged on the upper surface of the static grinding disc, and the first grinding protrusions (43) and the second grinding protrusions (44) are arranged in a staggered mode.
6. The solid-liquid mixing apparatus for preparing ultrafine slurry according to claim 1, wherein: the liquid feed inlet (11) and the solid feed inlet (12) are arranged on the side wall of the dispersing cylinder, and the liquid feed inlet (11) is positioned above the solid feed inlet (12).
7. The solid-liquid mixing apparatus for preparing ultrafine slurry according to claim 6, wherein: the liquid feeding hole (11) is positioned on the side wall of the dispersing cylinder above the edge of the dispersing disc, and the solid feeding hole (12) is positioned on the side wall of the dispersing cylinder between the edge of the dispersing disc and the movable grinding disc.
8. The solid-liquid mixing apparatus for preparing ultrafine slurry according to claim 1, wherein: the discharge port (13) is positioned at the bottom of the dispersing cylinder, and a valve (14) is arranged on the discharge port.
9. The solid-liquid mixing apparatus for preparing ultrafine slurry according to claim 1, wherein: the upper cover (15) of the dispersing cylinder is provided with a pressure gauge (16), an extraction opening (17) and an observation opening (18).
10. A mixing method using the solid-liquid mixing apparatus according to any one of claims 1 to 9, characterized in that: the method comprises the following steps:
S1: starting a driving mechanism (22) to drive a rotating shaft (20) to rotate, enabling liquid to enter a dispersing cylinder (10) from a liquid feed inlet (11) and fall onto a dispersing disc (30), and enabling the dispersing disc (30) to rotate along with the rotation of the rotating shaft (20) to drive the liquid to rotate so as to form a water curtain and have a certain speed;
s2: solid particles enter the dispersing cylinder (10) from the solid feed inlet (12) and are premixed with falling liquid;
S3: the material formed by the solid particles and the liquid falls onto the movable millstone (41) and flows onto the static millstone (42) along the first slit (45) under the action of gravity;
S4: grinding the material under the action of the first grinding bulge (43) and the second grinding bulge (44), and enabling the material to flow out of the second slit (46) to fall to the bottom of the dispersing cylinder (10) along with the increase of pressure, and enabling the material to enter the inside of the fixed sleeve (50) through the feeding through hole (52);
S5: the spiral auger (21) lifts the material upwards, and as the diameters of the fixed sleeve (50) and the spiral auger (21) are gradually reduced, the material flow speed is increased and the material is sprayed outwards from an overflow port (51) of the fixed sleeve (50);
S6: the material is splashed onto the movable millstone (41), flows onto the static millstone (42) through the first slit (45), is ground under the action of the first grinding bulge (43) and the second grinding bulge (44), then flows to the bottom of the dispersing cylinder (10) from the second slit (46), flows into the fixed sleeve (50) through the feeding through hole (52), is lifted by the spiral auger (21) to be dispersed and ground again, and the steps are repeated;
S7: after the particle size of the material reaches a preset value, the driving mechanism (22) is closed, the rotation of the rotating shaft is stopped, the valve (14) is opened, and the material is discharged from the discharge hole (13).
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| GB1456606A (en) * | 1973-05-15 | 1976-11-24 | Szegvari A | Method and apparatus for grinding particulate solids |
| CN101803874A (en) * | 2010-04-15 | 2010-08-18 | 陈家明 | Novel pulping mechanism and pulping machine |
| WO2015188759A1 (en) * | 2014-06-11 | 2015-12-17 | 深圳市博亿化工机械有限公司 | Novel dispersion grinding device |
| CN109289674A (en) * | 2018-11-27 | 2019-02-01 | 柳倩 | A kind of solid-liquid pharmaceutical compounding device with crushing function |
| CN109433135A (en) * | 2018-11-27 | 2019-03-08 | 高美珍 | A kind of solid-liquid reaction kettle device with grinding function |
| CN210874881U (en) * | 2019-09-23 | 2020-06-30 | 常熟世名化工科技有限公司 | Solid-liquid mixing equipment for preparing superfine slurry |
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| GB1456606A (en) * | 1973-05-15 | 1976-11-24 | Szegvari A | Method and apparatus for grinding particulate solids |
| CN101803874A (en) * | 2010-04-15 | 2010-08-18 | 陈家明 | Novel pulping mechanism and pulping machine |
| WO2015188759A1 (en) * | 2014-06-11 | 2015-12-17 | 深圳市博亿化工机械有限公司 | Novel dispersion grinding device |
| CN109289674A (en) * | 2018-11-27 | 2019-02-01 | 柳倩 | A kind of solid-liquid pharmaceutical compounding device with crushing function |
| CN109433135A (en) * | 2018-11-27 | 2019-03-08 | 高美珍 | A kind of solid-liquid reaction kettle device with grinding function |
| CN210874881U (en) * | 2019-09-23 | 2020-06-30 | 常熟世名化工科技有限公司 | Solid-liquid mixing equipment for preparing superfine slurry |
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