CN117861809B - Fluid-bed opposite-impact type jet mill - Google Patents
Fluid-bed opposite-impact type jet mill Download PDFInfo
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- CN117861809B CN117861809B CN202410268973.7A CN202410268973A CN117861809B CN 117861809 B CN117861809 B CN 117861809B CN 202410268973 A CN202410268973 A CN 202410268973A CN 117861809 B CN117861809 B CN 117861809B
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- 239000000463 material Substances 0.000 claims abstract description 78
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 12
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 12
- 241001330002 Bambuseae Species 0.000 claims abstract description 12
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 12
- 239000011425 bamboo Substances 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 230000007246 mechanism Effects 0.000 claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 4
- 238000011010 flushing procedure Methods 0.000 claims 8
- 230000000694 effects Effects 0.000 abstract description 13
- 230000001133 acceleration Effects 0.000 abstract description 2
- 239000006052 feed supplement Substances 0.000 abstract description 2
- 230000002146 bilateral effect Effects 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 28
- 239000008187 granular material Substances 0.000 description 7
- 230000009471 action Effects 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
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- 210000003437 trachea Anatomy 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- 239000007787 solid Substances 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/06—Jet mills
- B02C19/061—Jet mills of the cylindrical type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/06—Jet mills
- B02C19/066—Jet mills of the jet-anvil type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/02—Feeding devices
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The invention discloses a fluidized bed opposite-impact type air flow mill, and relates to the technical field of air flow mills. Comprises a top crushing cylinder and an auxiliary crushing cylinder, wherein a plurality of supporting frames are fixed on the outer side of the top crushing cylinder at equal intervals, the top crushing cylinder is communicated with the auxiliary crushing cylinder, a sealing plate is fixed on the bottom of the auxiliary crushing cylinder through a bolt, the bilateral symmetry of broken section of thick bamboo in top is provided with feeding subassembly, and feeding subassembly includes that transverse manifold and a plurality of feeding are in charge of, extends into and is provided with broken subassembly between the feeding in charge of the broken section of thick bamboo in top. The invention is provided with a feeding component, wherein a feeding hopper is communicated with an air inlet pipe, and when high-pressure gas is supplemented to a first nozzle, the gas can drive materials to enter a top crushing cylinder through a transverse main pipe and a feeding branch pipe. This scheme mixes high-pressure gas and material, realizes mixing the feed supplement, realizes the acceleration of material, has improved the initial kinetic energy of collision, has improved crushing effect.
Description
Technical Field
The invention relates to the technical field of jet mills, in particular to a fluid bed opposite-impact jet mill.
Background
The fluidized bed jet mill is characterized in that compressed air is accelerated into supersonic air flow through a Laval nozzle and then is injected into a crushing area to fluidize materials (the air flow expands to form fluidized bed suspension boiling to collide with each other), so that each particle has the same motion state. In the crushing zone, the accelerated particles collide with each other at the junction of the nozzles to crush.
Chinese patent, grant bulletin number CN 216172981U discloses an eight nozzle fluidized bed air current grinds, by first jar of body, the second jar of body, the fixed plate, a plurality of intercommunication mouthful, the installation mouth, first trachea, first joint, two second trachea and nozzle are constituteed, through the mutually supporting of above-mentioned subassembly, it is convenient for filter great solid, reduces the vibrations that produce when the device processing simultaneously, has set up two sets of nozzles simultaneously to improve grinding quality.
The technical problems in the background technology are solved by the scheme. However, in practical applications, the above solution still has certain drawbacks, such as:
the material conveying pipe and the nozzle of the device are arranged independently, the initial speed of the material entering the second tank body is low, and the disturbance of the gas sprayed by the nozzle on the material is small, so that the high-pressure gas sprayed by the nozzle is not easy to form the mutual collision of the materials with large force, and the crushing effect is poor;
In addition, in the collision crushing process, large-particle materials which are not crushed directly enter the first tank body for storage under the action of self gravity, so that the large-particle materials are not easy to crush again, and the crushing efficiency is further reduced.
Disclosure of Invention
The present invention is directed to a fluidized bed counter-impact jet mill, which solves the above-mentioned problems of the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions: the fluidized bed opposite impact type jet mill comprises a top crushing cylinder and an auxiliary crushing cylinder, wherein a plurality of supporting frames are fixed on the outer side of the top crushing cylinder at equal intervals, the top crushing cylinder is communicated with the auxiliary crushing cylinder, a sealing plate is fixed on the bottom of the auxiliary crushing cylinder through bolts, feeding components are symmetrically arranged on two sides of the top crushing cylinder, each feeding component comprises a transverse main pipe and a plurality of feeding branch pipes, the crushing assembly is arranged between the feeding branch pipes extending into the top crushing cylinder, the crushing assembly crushes materials, the end part of the transverse main pipe is fixedly communicated with the air inlet pipe, the top end of the air inlet pipe is fixedly communicated with the feed hopper, the bottom crushing cavity of the auxiliary crushing cylinder is internally provided with the auxiliary crushing mechanism, the top of the top crushing cylinder is provided with the classifier, and the discharge opening of the classifier is fixedly communicated with the discharge pipe.
Further, an inclined tube which is inclined upwards is fixed at the end part of the feeding branch tube which extends into the top crushing tube, a first nozzle is connected to the air outlet of the inclined tube in a screwed mode, and an angle formed by the central axis of the inclined tube and the central axis of the feeding branch tube which extends into the top crushing tube is 120-160 degrees.
Further, the number of the feeding branch pipes on one side is two, and the angle formed between the adjacent feeding branch pipes is 90 degrees.
Still further, broken subassembly includes arc round platen, the arc round platen of both sides is the symmetry setting for the broken section of thick bamboo in top, be formed with circular logical chamber between its internal surface, the outside of arc round platen is formed with the domatic of inwards sloping, the bottom mounting of arc round platen has the fixed plate, a plurality of discharge gate has been seted up on the plate body of fixed plate, the fixed plate is fixed mutually with the inner wall of the broken section of thick bamboo in top, the surface equidistance at arc round platen top is provided with a plurality of fin that inclination equals, fix mutually through the connecting plate between two tip and the broken section of thick bamboo inner wall in top of arc round platen, the fin is located between two connecting plates, the slope opposite direction of fin on the arc round platen in both sides.
Still further, the top of crushing subassembly is provided with two-stage crushing mechanism.
Still further, the secondary crushing mechanism comprises a cyclone fixed with the inner wall of the top crushing cylinder, and a crushing reinforcing component is arranged at the top of the cyclone.
Still further, broken reinforcing component is including fixing the elastic pad at the broken section of thick bamboo inner wall in top, and the outside of elastic pad is fixed with the steel sheet, and the outside integrated into one piece of steel sheet has a plurality of archs.
Still further, supplementary broken mechanism is including setting up two arc pipes in the arc round platen outside, and arc pipe symmetry sets up in the outside of supplementary broken section of thick bamboo, and fixed intercommunication has the standpipe between arc pipe and the horizontal house steward, and the inboard fixed intercommunication of standpipe has the connecting pipe of horizontal distribution, and the gas outlet spiro union of connecting pipe has 3-4 second nozzles, and the intersection point of the axis extension line of all second nozzles coincides with the arc center of arc pipe.
Still further, the top of second nozzle is provided with two guide plates that slope is decurrent, and the top both sides of guide plate all are fixed with the baffle, are provided with a plurality of herringbone plates between two baffles, are formed with the passageway between two adjacent herringbone plate curb plates of one side curb plate and the one-level between the baffle of herringbone plate, and the passageway quantity that forms equals with second nozzle quantity.
Further, the top of the top crushing cylinder is provided with an inspection door.
Compared with the prior art, the invention has the beneficial effects that:
The fluidized bed opposite-impact type air flow mill is provided with a feeding component, wherein a feeding hopper is communicated with an air inlet pipe, and when high-pressure gas is supplemented to a first nozzle, the gas can drive materials to enter a top crushing cylinder through a transverse main pipe and a feeding branch pipe. This scheme mixes high-pressure gas and material, realizes mixing the feed supplement, realizes the acceleration of material, has improved the initial kinetic energy of collision, has improved crushing effect.
Simultaneously, be provided with arc round platen and fin, the gas drives the material and collides with the arc round platen outside, realizes the breakage to the material, and the granule and the air after the breakage upwards move along the fin high-speed, forms spiral air current at the top of arc round platen for two sets of arc round platen's fin inclination is opposite for two air current rotation direction are opposite, can realize that the material continues to collide at the broken section of thick bamboo top in top, further breaks the material, has improved crushing efficiency and crushing effect.
In addition, still be provided with swirler and steel sheet at the top of the broken section of thick bamboo in top, the material after the breakage continues upwards to remove under the effect of air current, discharge after classifying through the grader, granule and air current rise and after passing through the swirler, the material granule carries out centrifugal motion, and great material can collide with the steel sheet under the effect of centrifugal force to realize further breakage to the material, improved final crushing effect, improved crushing efficiency.
The bottom of the crushing assembly is provided with the auxiliary crushing mechanism, partial materials are crushed through opposite impact among the second nozzles, the burden of the crushing assembly is reduced, the crushing assembly crushes the materials more fully, and in addition, the processing efficiency is improved through two-stage crushing.
Moreover, the larger material particles after crushing fall through the discharge hole under the action of the weight of the material particles, and at the moment, the second nozzle can drive the material particles to move at a high speed, so that the material particles are crushed again, and the crushing efficiency is further improved.
The surface of the material particles which are partially settled can be adhered with small particles, if the material particles are directly crushed again, the recovery efficiency is reduced, however, the surface of the large particles can be separated by adsorbing the small particle materials through the auxiliary crushing mechanism, so that the small particle materials can be rapidly recovered, and the recovery efficiency of the materials is further improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a semi-sectional view of the present invention;
FIG. 3 is a semi-sectional view of the present invention after removal of the classifier;
FIG. 4 is a detailed view of the crushing assembly and secondary crushing mechanism of the present invention;
FIG. 5 is a detailed view of the crushing assembly of the present invention;
FIG. 6 is a top view of the crushing assembly of the present invention;
Fig. 7 is a semi-sectional view of the additional crusher drum of the present invention after the crushing assembly and the additional crusher drum are disassembled.
In the figure: 1. a top crushing cylinder; 101. a support frame; 102. a bottom crushing chamber; 301. an air inlet pipe; 302. a feed hopper; 303. a transverse header pipe; 304. a feeding branch pipe; 305. a chute; 306. a first nozzle; 4. a crushing assembly; 401. an arc-shaped round bedplate; 402. a connecting plate; 403. a fin plate; 404. a fixing plate; 405. a discharge port; 5. an auxiliary crushing cylinder; 6. an auxiliary crushing mechanism; 601. a standpipe; 602. an arc tube; 603. a second nozzle; 7. a cyclone; 801. a steel plate; 802. a protrusion; 803. an elastic pad; 9. checking a door; 10. a classifier; 11. a discharge pipe; 12. a baffle; 13. a herringbone plate; 14. a sealing plate; 15. and a deflector.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but 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.
The device is applied to crushing material particles, and solves the technical problem that in the prior art, the collision force between the material particles is small due to the fact that the initial speed of the material is low, so that the crushing effect is poor.
As shown in fig. 1 to 7, the present invention provides a technical solution: the fluidized bed opposite impact type jet mill comprises a top crushing cylinder 1 and an auxiliary crushing cylinder 5, wherein three supporting frames 101 are fixed on the outer side of the top crushing cylinder 1 at equal intervals, the connection stability between the three supporting frames 101 and the top crushing cylinder 1 is improved, the supporting frames 101 at the middle position and the supporting frames 101 on the outer side are fixed through connecting rods, thus, an operation space is formed on the front surface of the jet mill, working parts arranged in the top crushing cylinder 1 are convenient to repair or maintain, an inspection door 9 is arranged at the top of the top crushing cylinder 1, and the inspection door 9 is connected with the top crushing cylinder 1 through a safety interlock.
It can be known that the top crushing cylinder 1 and the auxiliary crushing cylinder 5 are communicated, a sealing plate 14 is fixed at the bottom of the auxiliary crushing cylinder 5 through bolts, working components in the auxiliary crushing cylinder 5 can be repaired or maintained by opening the sealing plate 14, and materials remained in the bottom crushing cavity 102 are conveniently cleaned, feeding components are symmetrically arranged at two sides of the top crushing cylinder 1, the materials enter the top crushing cylinder 1 through the feeding components, wherein the feeding components comprise a transverse main pipe 303 and a plurality of feeding branch pipes 304, in one specific embodiment of the scheme, the number of the feeding branch pipes 304 at one side is two, an angle formed between the adjacent feeding branch pipes 304 is 90 degrees, the crushing components 4 are arranged between the feeding branch pipes 304 extending into the top crushing cylinder 1, the crushing components 4 are arranged to crush the materials, an air inlet pipe 301 is fixedly communicated with the end part of the transverse main pipe 303, a feed hopper 302 is fixedly communicated with the top end of the air inlet pipe 301, when high-pressure gas is supplemented to the air inlet pipe 301, the gas can drive materials flowing out of the feed hopper 302 to enter the top crushing cylinder 1 through the transverse main pipe 303 and a feeding branch pipe 304, specifically, an air pump or an air compression tank is connected to the pipe body of the air inlet pipe 301, high-pressure air is pumped into the air inlet pipe 301 through the air pump or the air compression tank, an auxiliary crushing mechanism 6 is arranged in a bottom crushing cavity 102 of the auxiliary crushing cylinder 5, a grader 10 is arranged at the top of the top crushing cylinder 1, a discharge opening of the grader 10 is fixedly communicated with a discharge pipe 11, the grader 10 is in the prior art, the working principle of the grader is not repeated in the embodiment, and it can be known that the crushed materials enter the grader 10 for grading under the action of the gas, the material classified by the classifier 10 flows out with the gas through the discharge pipe 11 and is then discharged from the discharge pipe 11.
To achieve an upward movement of the mixed gas after crushing by the crushing assembly 4, as shown in fig. 2 and 4, the end of the feed sub-tube 304 extending into the top crushing cylinder 1 is fixed with an inclined upward tube 305, a first nozzle 306 is screwed to the gas outlet of the inclined tube 305, and the angle formed by the central axis of the inclined tube 305 and the central axis of the feed sub-tube 304 extending into the top crushing cylinder 1 is 120 ° -160 °, which in a specific embodiment of the present solution is preferably 150 °.
In order to achieve collision and crushing of materials in mixed gas (materials and high-pressure gas), as shown in fig. 4 and 5, the crushing assembly 4 comprises an arc-shaped round platen 401, the arc-shaped round platens 401 on two sides are symmetrically arranged relative to the top crushing cylinder 1, a circular through cavity is formed between the inner surfaces of the arc-shaped round platens, an inward inclined slope is formed on the outer side of each arc-shaped round platen 401, a fixing plate 404 is fixed at the bottom end of each arc-shaped round platen 401, a plurality of discharge holes 405 are formed in a plate body of each fixing plate 404, the fixing plates 404 are fixed with the inner wall of the top crushing cylinder 1, accordingly fixing between each arc-shaped round platen 401 and the top crushing cylinder 1 is achieved, a plurality of fin plates 403 with equal inclination angles are arranged on the outer surface of the top of each arc-shaped round platen 401 at equal intervals, in this way, the first nozzles 306 are located on the outer sides of the smooth surfaces, two ends of each arc-shaped round platen 401 are fixed with the inner wall of the top crushing cylinder 1 through the connecting plates 402, and it can be understood that the fin plates 403 are located between the two connecting plates 402.
The arrangement of the first nozzle 306 and the inward inclined slope of the arc-shaped round platen 401 is beneficial to the upward movement of crushed materials and gas along the arc-shaped round platen 401, and reduces the kinetic energy loss.
It will be appreciated that the inclination of the fin 403 on the two side arcuate circular platens 401 is opposite.
Specifically, when high-pressure gas is introduced into the air inlet pipe 301 (the pressure range of the air inlet pipe 301 is 1-1.5MPa, and the flow range is 40-70Nm 3/min), the gas can drive the material to enter the top crushing cylinder 1 through the transverse main pipe 303 and the feeding branch pipe 304, the material continuously increases along with the movement of the gas, the initial kinetic energy of the material sprayed out through the first nozzle 306 is further increased, the gas drives the material to collide with the outer side of the arc-shaped round platen 401 rapidly, the crushed particles and air move upwards along the fin plates 403 at a high speed, heavier material particles fall down through the discharge holes 405, the material particles moving upwards along with the air flow are converged into spiral air flow at the top of the arc-shaped round platen 401, and the rotation directions of the air flows are opposite due to the opposite inclination angles of the fin plates 403 of the two groups of the arc-shaped round platen 401, so that the material can be crushed continuously at the top of the top crushing cylinder 1, and the crushing efficiency and the crushing effect are further improved.
In order to further improve the crushing effect of the materials and improve the crushing efficiency, a secondary crushing mechanism is arranged at the top of the crushing assembly 4, as shown in fig. 2 and 3, wherein the secondary crushing mechanism comprises a cyclone 7 fixed with the inner wall of the top crushing cylinder 1, and a crushing reinforcing assembly is arranged at the top of the cyclone 7.
To ensure smooth implementation of this solution, it should be noted that, as shown in fig. 3, the crushing reinforcement assembly includes an elastic pad 803 fixed on the inner wall of the top crushing cylinder 1, a steel plate 801 is fixed on the outer side of the elastic pad 803, and a plurality of protrusions 802 are integrally formed on the outer side of the steel plate 801.
Specifically, the crushed material continues to move upwards under the drive of the air flow until being discharged after being classified by the classifier 10, particles and the air flow rise and pass through the cyclone 7, the particles of the material perform centrifugal movement, and the larger material collides with the protrusions 802 on the steel plate 801 under the action of the centrifugal force, so that the material is crushed further.
For smooth surface of steel sheet 801, the setting of protruding 802 has increased collision resistance to reduced the kinetic energy of material granule, improved crushing effect, the elastic pad 803 is selected for the rubber pad, can cushion the striking between material granule and the steel sheet 801, has reduced the noise of this air current mill during operation.
In order to reduce the burden of the crushing assembly 4 and make the crushing assembly 4 more sufficient for crushing materials, as shown in fig. 7, the auxiliary crushing mechanism 6 includes two arc pipes 602 disposed at the outer side of the arc round platen 401, the arc pipes 602 are symmetrically disposed at the outer side of the auxiliary crushing cylinder 5, a vertical pipe 601 is fixedly connected between the arc pipes 602 and the transverse main pipe 303, the inner side of the vertical pipe 601 is fixedly connected with a connecting pipe which is horizontally distributed, and the air outlet of the connecting pipe is screwed with three or four second nozzles 603.
As shown in fig. 7, it should be noted that two downward inclined guide plates 15 are provided at the top of the second nozzle 603, two baffle plates 12 are fixed at both sides of the top of the guide plates 15, 2 chevron plates 13 are provided between the two baffle plates 12, channels are formed between the side plate of one chevron plate 13 and the baffle plate 12 and between the side plates of the adjacent two chevron plates 13, it can be understood that the number of the formed channels is equal to the number of the second nozzle 603, and the falling material particles move downward through the channels.
In this scheme, the crushing is realized through the hedging between six second nozzles 603 to some materials, the burden of crushing subassembly 4 has been reduced, make crushing subassembly 4 more abundant to the breakage of material, great material granule will drop through discharge gate 405 under its own weight effect after the breakage, and move downwards through the passageway, the material is located the top of second nozzle 603 this moment, second nozzle 603 spun gas can drive this material granule and carry out high-speed removal, realize breaking again, move upwards through circular logical chamber under the effect of air current to the material after breaking.
In addition, it should be noted that the surface of the material particles that partially subsides will be adhered with the small particle material, and if the material particles are directly crushed again, the recovery efficiency will be reduced, however, the small particle material can be separated by the surface of the large particles through the auxiliary crushing mechanism 6, so that the small particle material can be quickly recovered, and the recovery efficiency of the material is further improved.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made hereto without departing from the spirit and scope of the invention as defined by the appended embodiments and equivalents thereof.
Claims (9)
1. The utility model provides a fluidized bed opposite impact type air current grinds, includes broken section of thick bamboo in top and supplementary broken section of thick bamboo, and broken section of thick bamboo outside equidistance in top is fixed with a plurality of support frames that are used for supporting the air current and grinds, its characterized in that: the top crushing cylinder is communicated with the auxiliary crushing cylinder, a sealing plate is fixed at the bottom of the auxiliary crushing cylinder through a bolt, materials in the auxiliary crushing cylinder can be cleaned after the sealing plate is opened, feeding components are symmetrically arranged at two sides of the top crushing cylinder, the materials enter the top crushing cylinder through the feeding components, wherein the feeding components comprise a transverse main pipe and a plurality of feeding branch pipes, the crushing components are arranged between the feeding branch pipes extending into the top crushing cylinder, the crushing components crush the materials, an air inlet pipe is fixedly communicated with the end part of the transverse main pipe, a feed hopper is fixedly communicated with the top end of the air inlet pipe, and when the air inlet pipe is supplemented with high-pressure gas, the gas can drive the materials flowing out of the feed hopper to enter the top crushing cylinder through the transverse main pipe and the feeding branch pipes, an auxiliary crushing mechanism is arranged in a bottom crushing cavity of the auxiliary crushing cylinder, a grader is arranged at the top of the top crushing cylinder, a discharge port of the grader is fixedly communicated with the discharge pipe, and the materials obtained by grading through the grader flow out along with the gas through the discharge pipe;
The crushing assembly comprises an arc-shaped round table plate, the arc-shaped round table plates on two sides are symmetrically arranged relative to the top crushing cylinder, a circular through cavity is formed between the inner surfaces of the arc-shaped round table plates, an inward inclined slope is formed on the outer sides of the arc-shaped round table plates, a fixed plate is fixed at the bottom end of the arc-shaped round table plates, a plurality of discharge ports are formed in the plate body of the fixed plate, the fixed plate is fixed with the inner wall of the top crushing cylinder, a plurality of fin plates with equal inclination angles are arranged on the outer surfaces of the tops of the arc-shaped round table plates at equal intervals, the two end parts of the arc-shaped round table plates are fixed with the inner wall of the top crushing cylinder through connecting plates, the fin plates are located between the two connecting plates, and the inclination directions of the fin plates on the arc-shaped round table plates on two sides are opposite.
2. The fluidized bed counter-flushing jet mill of claim 1, wherein: the end part of the feeding branch pipe extending into the top crushing cylinder is fixedly provided with an inclined pipe which is inclined upwards, the air outlet of the inclined pipe is in threaded connection with a first nozzle, and the central axis of the inclined pipe and the central axis of the feeding branch pipe extending into the top crushing cylinder form an angle of 120-160 degrees.
3. The fluidized bed counter-flushing jet mill of claim 1, wherein: the number of the feeding branch pipes on one side is two, and the angle formed between the adjacent feeding branch pipes is 90 degrees.
4. The fluidized bed counter-flushing jet mill of claim 1, wherein: the top of crushing subassembly is provided with two-stage crushing mechanism.
5. The fluidized bed counter-flushing jet mill of claim 4, wherein: the secondary crushing mechanism comprises a cyclone fixed with the inner wall of the top crushing cylinder, and a crushing reinforcing component is arranged at the top of the cyclone.
6. The fluidized bed counter-flushing jet mill of claim 5, wherein: the crushing reinforcing component comprises an elastic pad fixed on the inner wall of the top crushing cylinder, a steel plate is fixed on the outer side of the elastic pad, and a plurality of bulges are integrally formed on the outer side of the steel plate.
7. The fluidized bed counter-flushing jet mill of claim 1, wherein: the auxiliary crushing mechanism comprises two arc-shaped pipes arranged on the outer side of the arc-shaped round platen, the arc-shaped pipes are symmetrically arranged on the outer side of the auxiliary crushing cylinder, a vertical pipe is fixedly communicated between the arc-shaped pipes and the transverse main pipe, connecting pipes which are horizontally distributed are fixedly communicated with the inner sides of the vertical pipes, 3-4 second nozzles are connected with the air outlets of the connecting pipes in a screwed mode, and the intersection points of the central axis extension lines of all the second nozzles coincide with the arc centers of the arc-shaped pipes.
8. The fluidized bed counter-flushing jet mill of claim 7, wherein: the top of second nozzle is provided with two guide plates of slope decurrent, and the top both sides of guide plate all are fixed with the baffle, are provided with a plurality of herringbone plates between two baffles, are formed with the passageway between curb plate and the baffle of herringbone plate one side and between two adjacent herringbone plate curb plates, and the passageway quantity that forms equals with second nozzle quantity.
9. The fluidized bed counter-flushing jet mill of claim 1, wherein: the top of the top crushing cylinder is provided with an inspection door.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410268973.7A CN117861809B (en) | 2024-03-11 | 2024-03-11 | Fluid-bed opposite-impact type jet mill |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410268973.7A CN117861809B (en) | 2024-03-11 | 2024-03-11 | Fluid-bed opposite-impact type jet mill |
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| CN117861809A CN117861809A (en) | 2024-04-12 |
| CN117861809B true CN117861809B (en) | 2024-05-28 |
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| CN116747976A (en) * | 2023-06-16 | 2023-09-15 | 湖南经源科技有限公司 | Fluidized bed jet milling classifier for lithium battery material preparation |
| CN117358382A (en) * | 2023-09-22 | 2024-01-09 | 郑州磨料磨具磨削研究所有限公司 | Fine-granularity abrasive air flow crushing device and method with adjustable particle shape |
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| CN116747976A (en) * | 2023-06-16 | 2023-09-15 | 湖南经源科技有限公司 | Fluidized bed jet milling classifier for lithium battery material preparation |
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