Airflow crushing equipment for processing lithium iron phosphate

Abstract

According to the airflow crushing equipment for lithium iron phosphate processing, a cleaning device (2) is arranged on the outer surface of a filter cylinder (6), and the cleaning device (2) can clean the surface of the filter cylinder (6) through reciprocating motion; the cleaning device with the driving mechanism is arranged on the outer surface of the filter cartridge, and the driving mechanism and the elastic reset impact force of the elastic reset piece are used for driving the brush to reciprocate back and forth in the axis direction of the filter cartridge, so that lithium iron phosphate powder attached to the surface of the filter cartridge can be cleaned in real time; the powder is prevented from forming a compact adhesion layer due to small particle size and static electricity to block air holes of the filter cartridge; and powder attached to the brush can be shaken off when the brush reciprocates back and forth in the axis direction of the filter cartridge, so that the brush is prevented from being stuck with the powder and losing efficacy, and the filtering efficiency of the filter cartridge is effectively maintained.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of chemical industry and powder processing, and particularly relates to a jet mill for processing lithium iron phosphate. BACKGROUND

[0002] The jet mill is a device for crushing lithium iron phosphate material into fine particles by using kinetic energy of high-speed airflow. The working principle is to accelerate the flow of compressed gas in a closed environment and physically crush the lithium iron phosphate raw material by the high-speed impact of the airflow.

[0003] When the lithium iron phosphate particles are crushed into powder by using the jet mill, the lithium iron phosphate particles are fed into the jet mill by the screw conveyor, and the outlet of the blower is connected to the air inlet pipe to provide airflow with a certain speed in the jet mill. After the lithium iron phosphate particles enter the jet mill, they are crushed by mutual collision and friction in the middle of the crushing chamber under the action of the airflow. The crushed powder rises to the filter cartridge and passes through the filter cartridge to allow the fine lithium iron phosphate particles to be discharged from the discharge pipe. The lithium iron phosphate particles that are not completely crushed will continue to collide, rub, and crush in the jet mill under the action of the airflow. Since the crushed powder has a small particle size, a large specific surface area, and static electricity under the action of high-speed airflow, it is easily adsorbed on the surface of the filter cartridge to form a dense adhesive layer. As the production continues, the powder continuously accumulates, which causes the air permeation holes of the filter cartridge to be gradually blocked, reduces the filtering efficiency, and affects the stability and continuity of the lithium iron phosphate particle crushing process.

[0004] Therefore, there is an urgent need to provide a new solution to solve the above-mentioned defects and deficiencies in the prior art. SUMMARY

[0005] In order to solve the above-mentioned defects and deficiencies in the prior art, the present application provides a jet mill for processing lithium iron phosphate.

[0006] The technical solution adopted by the present application to solve the technical problems is: The jet mill for processing lithium iron phosphate comprises: A jet mill is connected to a screw conveyor on one side, an air inlet pipe is connected to the bottom of the jet mill, and a discharge pipe is connected to the top of the jet mill. A filter cartridge is installed inside the jet mill, a first motor is fixedly installed on the outside of the jet mill, the output end of the first motor is fixedly connected to one side of the filter cartridge, and one end of the discharge pipe extends into the jet mill and is fixedly connected to the other side of the filter cartridge. Characterized in that: The outer surface of the filter cartridge is provided with a cleaning device capable of cleaning the surface of the filter cartridge through reciprocating motion.

[0007] As a further preferred embodiment of the present application, the cleaning device comprises a plurality of brushes sleeved on the outer periphery of the filter cartridge, the brushes are fixedly connected with the bottom of the protrusions, the top of the protrusions is fixedly connected with the driving mechanism, the outer edge of the brush is fixedly connected with a sliding hole block, the two ends of the sliding rod are fixedly installed on the inner wall of the jet mill, the sliding hole block is sleeved on the outer periphery of the sliding rod and can slide relative to the sliding rod.

[0008] As a further preferred embodiment of the present application, the driving mechanism is arranged inside the jet mill and located between the brush and the jet mill.

[0009] As a further preferred embodiment of the present application, the outer edge of the brush is fixedly installed with a reinforcing rod, and the reinforcing rod is fixedly connected with the sliding hole block.

[0010] As a further preferred embodiment of the present application, the brush is provided with a plurality of groups, and a gap is reserved between adjacent two groups of brushes; and the following conditions are met: In the direction from the axial two sides to the axial middle, the axial size of each group of brushes gradually decreases; In the direction from the axial two sides to the axial middle, the axial size of the gap between adjacent two groups of brushes gradually increases.

[0011] As a further preferred embodiment of the present application, an elastic reset member is further arranged between one side of the sliding hole block and the inner wall of the jet mill.

[0012] As a further preferred embodiment of the present application, a telescopic sleeve is sleeved on the outer periphery of the elastic reset member, and the two ends of the telescopic sleeve are fixedly connected with the inner wall of the jet mill.

[0013] As a further preferred embodiment of the present application, a winding rod is installed through the inner wall of the jet mill, the top of the winding rod is fixedly installed with a circular gear; a second motor is fixedly installed on the outer side of the jet mill, the output end of the second motor is fixedly installed with a sector gear; and the circular gear and the sector gear are correspondingly engaged.

[0014] As a further preferred embodiment of the present application, a pull rope is connected between the outer edge of the winding rod and the protrusion.

[0015] As a further preferred embodiment of the present application, a protective net is fixedly installed on one side of the jet mill, and the second motor, the sector gear and the circular gear are arranged inside the protective net.

[0016] Compared with the prior art, the present application has the following beneficial effects: 1) The present application provides a jet mill for processing lithium iron phosphate, by providing a cleaning device with a driving mechanism on the outer surface of the filter cartridge. The driving mechanism and the elastic return member drive the brush to move back and forth along the axis of the filter cartridge. This can clean the lithium iron phosphate powder attached to the surface of the filter cartridge in real time, avoid the powder from blocking the air permeation hole of the filter cartridge due to small particle size and static electricity forming a dense adhesive layer, and prevent the brush from sticking to the powder and failing during the back-and-forth movement of the brush along the axis of the filter cartridge. This effectively maintains the filtering efficiency of the filter cartridge, ensures that the fine particles after crushing can smoothly pass through the filter cartridge and be discharged from the discharge pipe, and the particles that have not been completely crushed continue to be crushed under the action of the airflow, completely solving the problem of crushing interruption and efficiency reduction caused by filter cartridge blockage in traditional equipment, and ensuring the stability and continuity of the lithium iron phosphate particle crushing process.

[0017] 2) The present application provides a jet mill for processing lithium iron phosphate, the brush of the cleaning device is stably connected to the sliding hole block through the reinforcing rod, which increases the connection area and reduces the possibility of unintended damage and fracture of the brush during back-and-forth movement, reducing the frequency of component replacement; the elastic return member is isolated from the external powder by the telescopic sleeve in the driving mechanism, preventing the powder from adhering to the elastic return member and causing it to lose its elasticity, and the protective net prevents external impurities from being stuck in the meshing part of the sector gear and the circular gear, ensuring the stable operation of the driving components. At the same time, the self-cleaning function of the brush does not require frequent disassembly and cleaning, reducing the amount of manual maintenance work and downtime for maintenance. The above structural design collectively reduces the maintenance cost and component wear of the equipment, significantly extending the overall service life of the equipment.

[0018] 3) The present application provides a jet mill for processing lithium iron phosphate, under the condition that the filter cartridge is unblocked, the airflow in the jet mill flows smoothly, and the lithium iron phosphate particles can be fully crushed under the action of high-speed airflow, avoiding the increase in airflow resistance and the disorder of particle motion trajectory caused by filter cartridge blockage, thereby improving the crushing efficiency; and the process of screening and discharging fine particles is stable, and the situation of "mixing of coarse and fine particles" does not occur due to filter cartridge blockage, ensuring that the particle size of the lithium iron phosphate powder after crushing is uniform, ensuring the consistency of product quality, and meeting the high-precision processing needs of lithium iron phosphate powder in the chemical and powder fields. BRIEF DESCRIPTION OF DRAWINGS

[0019] The present application will be further described below in conjunction with the drawings and examples.

[0020] Figure 1 is a structural schematic diagram of the jet mill for processing lithium iron phosphate according to the present application.

[0021] Figure 2 is a three-dimensional structural schematic diagram of the jet mill for processing lithium iron phosphate according to the present application; Figure 3This invention proposes an air jet mill for processing lithium iron phosphate. Figure 2 A three-dimensional schematic diagram of a local structure; Figure 4 This invention proposes an airflow pulverizing device for processing lithium iron phosphate. Figure 3 Partial structural diagram; Figure 5 This is a three-dimensional structural diagram of the brush at the airflow pulverizer of the airflow pulverizer for lithium iron phosphate processing proposed in this invention. Figure 6 This invention proposes an airflow pulverizing device for processing lithium iron phosphate. Figure 5 A three-dimensional schematic diagram of a local structure; Figure 7 This invention proposes an airflow pulverizing device for processing lithium iron phosphate. Figure 3 Enlarged view of point A.

[0022] Legend: 1. Airflow pulverizer; 2. Cleaning device; 3. Screw conveyor; 4. Air inlet pipe; 5. Discharge pipe; 6. Filter cartridge; 7. First motor; 21. Protrusion; 22. Brush; 23. Sliding block; 24. Sliding rod; 25. Reinforcing rod; 26. Drive mechanism; 261. Elastic reset element; 262. Winding rod; 263. Circular gear; 264. Second motor; 265. Sector gear; 266. Pull rope; 267. Telescopic sleeve; 268. Protective net. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] [First Embodiment] like Figures 1-5The lithium iron phosphate processing air flow crushing equipment provided by the first embodiment of the application is shown, which comprises an air flow crusher 1, a spiral conveyor 3 connected to one side of the air flow crusher 1, an air inlet pipe 4 connected to the bottom of the air flow crusher 1, and a discharge pipe 5 connected to the top of the air flow crusher 1; a filter cartridge 6 is installed inside the air flow crusher 1, a first motor 7 is fixedly installed outside the air flow crusher 1, the output end of the first motor 7 is fixedly connected to one side of the filter cartridge 6, and one end of the discharge pipe 5 extends into the air flow crusher 1 and is fixedly connected to the other side of the filter cartridge 6; the lithium iron phosphate particles are sent into the air flow crusher 1 by the spiral conveyor 3, and the outlet of a fan is connected to the air inlet pipe 4 to provide airflow with a certain speed in the air flow crusher 1; in this way, after the lithium iron phosphate particles enter the air flow crusher 1, they can be crushed by mutual collision and friction in the middle of the crushing cavity under the action of the airflow, and the crushed material powder rises to the filter cartridge 6 under the action of the airflow, the filter cartridge 6 rotates synchronously under the driving of the output power of the first motor 7, the filter screen of the filter cartridge 6 performs screening, so that the fine lithium iron phosphate particles enter the discharge pipe 5 and are discharged, and the lithium iron phosphate particles that are not completely crushed continue to collide, rub and crush in the air flow crusher 1 under the action of the airflow.

[0026] The improvement of the embodiment compared with the prior art is that the outer surface of the filter cartridge 6 is provided with a cleaning device 2, which can clean the surface of the filter cartridge 6 through reciprocating motion. By providing a cleaning device with a driving mechanism on the outer surface of the filter cartridge, the brush is driven to reciprocate back and forth along the axis of the filter cartridge by the elastic return impact force of the driving mechanism and the elastic return member, which can not only clean the lithium iron phosphate powder attached to the surface of the filter cartridge in real time, so as to prevent the powder from blocking the air permeable holes of the filter cartridge due to small particle size and static electricity forming a dense adhesive layer, but also shake off the powder attached to the brush itself during the reciprocating motion of the brush along the axis of the filter cartridge, so as to prevent the brush from being ineffective due to powder adhesion. Therefore, the filtering efficiency of the filter cartridge is effectively maintained, the fine particles after crushing are smoothly discharged from the discharge pipe through the filter cartridge, the particles that are not completely crushed continue to collide and crush under the action of the airflow, and the problems of crushing interruption and efficiency reduction caused by filter cartridge blockage in traditional equipment are completely solved, so as to ensure the stability and continuity of the lithium iron phosphate particle crushing process.

[0027] As Figures 1-5As shown, the cleaning device 2 in the embodiment includes a plurality of brushes 22 sleeved on the outer periphery of the filter cartridge 6, the brushes 22 are fixedly connected with the bottom of the protrusion 21, the top of the protrusion 21 is fixedly connected with the driving mechanism 26, the driving mechanism 26 is arranged inside the jet mill 1 and between the brushes 22 and the jet mill 1, for driving the brushes 22 to reciprocate on the outer periphery of the filter cartridge 6, the outer edge of the brush 22 is fixedly connected with a sliding hole block 23, both ends of a sliding rod 24 are fixedly installed on the inner wall of the jet mill 1, and the sliding hole block 23 is sleeved on the outer periphery of the sliding rod 24 and can slide relative to the sliding rod 24. During the crushing process, the driving mechanism 26 is started to drive the protrusion 21 and the brush 22 to reciprocate on the outer periphery of the filter cartridge 6, thereby driving the sliding hole block 23 fixedly connected with the brush 22 to reciprocate on the outer periphery of the sliding rod 24 relative to the sliding rod 24, and then the powder adhered to the surface of the filter cartridge 6 is cleaned, so that the filter cartridge 6 is not blocked by the powder, the filtering efficiency is improved, the crushing efficiency of the equipment is improved, the maintenance cost is reduced, the service life of the equipment is prolonged, and the stability and continuity of the lithium iron phosphate particle crushing process are ensured.

[0028] As preferred, the outer edge of the brush 22 is fixedly installed with a reinforcing rod 25, the reinforcing rod 25 is fixedly connected with the sliding hole block 23, by stably connecting the reinforcing rod 25 and the sliding hole block 23, the connection area is increased, the possibility of unexpected damage and fracture of the brush 22 during reciprocating movement is reduced, and the replacement frequency of components is reduced.

[0029] In the embodiment, the brush 22 is provided in multiple groups, and a gap is reserved between adjacent two groups of brushes 22; the multiple groups of brushes 22 are used to realize comprehensive coverage of the outer periphery of the filter cartridge 6 and improve the cleaning comprehensiveness, and the gap reserved between the adjacent two groups of brushes 22 facilitates the powder falling off from the outer wall of the filter cartridge 6 to fall into the inside of the jet mill 1 through the gap; and meet: In the direction from the axial two sides to the axial middle part, the axial size of each group of brushes 22 gradually decreases; the purpose of such arrangement is that, on the one hand, the crushed material powder will rise under the action of the incoming airflow and concentrate at the middle part of the filter cartridge 6, so that the number of brushes 22 at the middle part of the filter cartridge 6 can be increased in the direction from the axial two sides to the axial middle part, thereby improving the cleaning comprehensiveness and integrity of the middle part of the filter cartridge 6 as much as possible; on the other hand, since the brushes 22 at the end part need to directly contact the powder on the outer wall of the filter cartridge 6 during cleaning, the axial size of each group of brushes 22 gradually decreases in the direction from the axial two sides to the axial middle part, so that the brushes 22 at the end part can have a larger axial size and thus be beneficial to improving the strength and reducing the damage caused by direct contact with the powder on the outer wall of the filter cartridge 6 during cleaning, thereby effectively prolonging the service life.

[0030] Correspondingly, the axial size of the gap between the adjacent two groups of brushes 22 gradually increases in the direction from the axial two sides to the axial middle. Similarly, since the crushed material powder will rise under the action of the entering airflow and concentrate at the middle position of the filter cartridge 6, and on this basis, the material powder with larger particles will also concentrate at the middle position of the filter cartridge 6, therefore, the axial size of the gap between the adjacent two groups of brushes 22 gradually increases in the direction from the axial two sides to the axial middle, which can ensure that the material powder with larger particles at the middle position of the filter cartridge 6 can fall through the gap with larger axial size, reducing the unintended blockage of the gap. In addition, the axial size of the gap between the adjacent two groups of brushes 22 gradually increases in the direction from the axial two sides to the axial middle, which can also ensure that the end position can have a relatively small gap, which is also conducive to further improving the strength of the end brush 22 when the axial end surface is in direct contact with the powder on the outer wall of the filter cartridge 6 during cleaning, thereby reducing the unintended damage to the end brush 22 and effectively prolonging its service life.

[0031] As shown in Figures 1-5 The side of the sliding hole block 23 in the embodiment and the inner wall of the jet mill 1 is also provided with an elastic reset member 261. When the driving mechanism 26 drives the brush 22 to move to one side of the outer periphery of the filter cartridge 6, the elastic reset member 261 is deformed. When the brush 22 moves to the terminal position on the opposite side of the outer periphery of the filter cartridge 6, the elastic reset member 261 is driven to move to the opposite side of the outer periphery of the filter cartridge 6 by the elastic restoring force provided by the elastic reset member 261. On this basis, the outer periphery of the elastic reset member 261 is sleeved with a telescopic sleeve 267, and the two ends of the telescopic sleeve 267 are fixedly connected with the inner wall of the jet mill 1. By providing the telescopic sleeve 267, the elastic reset member 261 can be covered to protect it, avoiding the unintended attachment and accumulation of powder outside the elastic reset member 261, thereby affecting the use of the elastic reset member.

[0032] The inner wall of the air flow pulverizer 1 is provided with a winding rod 262, and the top of the winding rod 262 is fixedly provided with a circular gear 263; the outer side of the air flow pulverizer 1 is fixedly provided with a second motor 264, and the output end of the second motor 264 is fixedly provided with a sector gear 265; the circular gear 263 is in meshing correspondence with the sector gear 265; and the outer edge of the winding rod 262 is connected with a pull rope 266 between the convex block 21. The second motor 264 drives the sector gear 265 to rotate, drives the circular gear 263 in meshing correspondence with the sector gear 265 to rotate, and drives the winding rod 262 fixedly connected with the circular gear 263 to synchronously rotate, so that the pull rope 266 fixedly connected with the winding rod 262 is wound and rolled when the winding rod 262 rotates, and the convex block 21 and the brush 22 are moved to one side along the outer periphery of the filter cartridge 6, at this time, the elastic reset member 261 is stretched, and when the teeth on the sector gear 265 are completely disengaged from the teeth on the circular gear 263, the elastic reset member 261 moves the sliding hole block 23 to the opposite side relative to the sliding rod 24 under the action of the elastic restoring force of the elastic reset member 261, and then drives the brush 22 and the convex block 21 to synchronously move to the opposite side, so that the pull rope 266 wound on the outer periphery of the winding rod 262 is unwound, and the powder attached to the brush 22 can be shaken off during the reciprocating movement of the brush 22 along the axis direction of the filter cartridge 6, so as to prevent the brush 22 from being ineffective due to powder adhesion, thereby effectively ensuring the filtering efficiency of the filter cartridge 6.

[0033] As one of the preferred control modes, when the second motor 264 drives the brush 22 to move to one side along the outer periphery of the filter cartridge 6: firstly, the brush 22 is controlled to move to one side along the outer periphery of the filter cartridge 6 at a relatively small first speed V1, so that the output power of the second motor 264 can drive the brush 22 to move to one side along the outer periphery of the filter cartridge 6, and the powder attached to the outer wall of the filter cartridge 6 can be scraped off; secondly, the brush 22 is controlled to move to one side along the outer periphery of the filter cartridge 6 at a large and stable second speed V2 (V2>V1), so that the powder attached to the outer wall of the filter cartridge 6 can be uniformly scraped off by driving the brush 22 to move to one side along the outer periphery of the filter cartridge 6 at a uniform speed; finally, the brush 22 is controlled to decrease from the stable second speed V2 until the brush 22 stops moving to one side, at this time, the elastic reset member 261 approaches the stretching limit, and the brush 22 needs to be stopped at a stable position along the outer periphery of the filter cartridge 6 to facilitate the stable movement of the subsequent reverse movement, and to avoid stretching the elastic reset member 261 beyond the limit to cause damage to the elastic reset member 261.

[0034] As a further preferred, the airflow pulverizer 1 is fixedly installed with a protective net 268 on one side, and the second motor 264, the fan-shaped gear 265 and the circular gear 263 are all arranged inside the protective net 268. By arranging the protective net 268, the second motor 264, the fan-shaped gear 265 and the circular gear 263 can be covered, so that the external dust and impurities are not easy to be stuck between the fan-shaped gear 265 and the circular gear 263, the gear meshing process is avoided from being affected, and the running stability of the driving is ensured.

[0035] The specific working process of the embodiment includes: The lithium iron phosphate particles are sent into the airflow pulverizer 1 by the screw conveyor 3, and meanwhile, the fan outlet is connected to the air inlet pipe 4 to provide airflow with a certain speed in the airflow pulverizer 1, so that the lithium iron phosphate particles can be pulverized by mutual collision and friction in the middle of the pulverizing cavity under the driving of the airflow, and the pulverized material powder will rise to the filter cartridge 6 under the action of the airflow, the output power of the first motor 7 drives the filter cartridge 6 to rotate synchronously, and the filter screen separation effect of the filter cartridge 6 enables the finer lithium iron phosphate particles to enter the discharge pipe 5, while the lithium iron phosphate particles that are not completely pulverized will continue to collide, rub and be pulverized in the airflow pulverizer 1 under the driving of the airflow; During the pulverizing process, the second motor 264 drives the fan-shaped gear 265 to rotate, drives the circular gear 263 meshing with the fan-shaped gear 265 to rotate, and drives the winding rod 262 fixedly connected with the circular gear 263 to rotate synchronously, the winding rod 262 drives the pull rope 266 fixedly connected with the winding rod 262 to be wound and rolled up when the winding rod 262 rotates, and then pulls the protrusion 21 and the brush 22 to move to one side in the outer periphery of the filter cartridge 6, at this time, the elastic return member 261 is stretched, and when the teeth on the fan-shaped gear 265 are completely disengaged from the teeth on the circular gear 263, the elastic return member 261 will pull the sliding block 23 to move to the opposite side relative to the sliding rod 24 in the outer periphery of the sliding rod 24 under the action of the elastic restoring force of the elastic return member 261, and then drive the brush 22 and the protrusion 21 to move to the opposite side synchronously, so that the pull rope 266 wound on the outer periphery of the winding rod 262 is unwound, and the powder adhered to the brush 22 can be shaken off during the reciprocating motion of the brush 22 along the axial direction of the filter cartridge 6, preventing the brush 22 from being ineffective due to powder adhesion, thereby effectively ensuring the filtering efficiency of the filter cartridge 6.

[0036] When the driving mechanism 26 drives the brush 22 to move to one side in the outer periphery of the filter cartridge 6, the elastic return member 261 is deformed, and then the elastic return member 261 drives the brush 22 to move to the opposite side in the outer periphery of the filter cartridge 6 under the action of the elastic restoring force, and the powder adhered to the brush 22 can be shaken off during the reciprocating motion of the brush along the axial direction of the filter cartridge, preventing the brush from being ineffective due to powder adhesion. Thus, the filtering efficiency of the filter cartridge is effectively maintained.

[0037] With the above ideal embodiments according to the present application as the inspiration, through the above description, relevant staff can make various changes and modifications without deviating from the scope of the technical idea of the present application. The technical scope of the present application is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. An air jet mill for processing lithium iron phosphate, including: An airflow pulverizer (1) is provided with a screw conveyor (3) connected to one side, an air inlet pipe (4) connected to the bottom of the airflow pulverizer (1), and a discharge pipe (5) connected to the top of the airflow pulverizer (1). The air jet mill (1) is equipped with a filter cartridge (6) inside. A first motor (7) is fixedly installed on the outside of the air jet mill (1). The output end of the first motor (7) is fixedly connected to one side of the filter cartridge (6). One end of the discharge pipe (5) extends into the air jet mill (1) and is fixedly connected to the other side of the filter cartridge (6). Its features are: The outer surface of the filter cartridge (6) is provided with a cleaning device (2), which can clean the surface of the filter cartridge (6) by reciprocating motion.

2. The airflow pulverizing equipment for processing lithium iron phosphate according to claim 1, characterized in that: The cleaning device (2) includes several brushes (22) sleeved on the outer periphery of the filter cartridge (6). The brushes (22) are fixedly connected to the bottom of the protrusion (21), and the top of the protrusion (21) is fixedly connected to the drive mechanism (26). The outer edge of the brushes (22) is fixedly connected to a sliding hole block (23). The two ends of the sliding rod (24) are fixedly installed on the inner wall of the airflow pulverizer (1). The sliding hole block (23) is sleeved on the outer periphery of the sliding rod (24) and can slide relative to the sliding rod (24).

3. The airflow pulverizing equipment for processing lithium iron phosphate according to claim 2, characterized in that: The drive mechanism (26) is located inside the air jet mill (1) and between the brush (22) and the air jet mill (1).

4. The airflow pulverizing equipment for processing lithium iron phosphate according to claim 2, characterized in that: A reinforcing rod (25) is fixedly installed on the outer edge of the brush (22), and the reinforcing rod (25) is fixedly connected to the sliding block (23).

5. The airflow pulverizing equipment for processing lithium iron phosphate according to claim 2, characterized in that: The brush (22) is provided in multiple sets, and a gap is reserved between adjacent sets of brushes (22); and satisfies: Along the direction from both sides of the axis to the middle of the axis, the axial dimension of each group of brushes (22) gradually decreases; Along the direction from both sides of the axis to the middle of the axis, the axial dimension of the gap between two adjacent sets of brushes (22) gradually increases.

6. The airflow pulverizing equipment for processing lithium iron phosphate according to claim 2, characterized in that: An elastic reset member (261) is also provided between one side of the sliding block (23) and the inner wall of the airflow pulverizer (1).

7. The airflow pulverizing equipment for processing lithium iron phosphate according to claim 6, characterized in that: The elastic reset member (261) is fitted with a telescopic sleeve (267) on its outer periphery, and the two ends of the telescopic sleeve (267) are fixedly connected to the inner wall of the airflow pulverizer (1).

8. The airflow pulverizing equipment for processing lithium iron phosphate according to claim 1, characterized in that: A winding rod (262) is installed through the inner wall of the airflow pulverizer (1), and a circular gear (263) is fixedly installed on the top of the winding rod (262); a second motor (264) is fixedly installed on the outer side of the airflow pulverizer (1), and a sector gear (265) is fixedly installed at the output end of the second motor (264); and the circular gear (263) and the sector gear (265) mesh accordingly.

9. The airflow pulverizing equipment for processing lithium iron phosphate according to claim 8, characterized in that: A pull rope (266) is connected between the outer edge of the winding rod (262) and the protrusion (21).

10. The airflow pulverizing equipment for processing lithium iron phosphate according to claim 9, characterized in that: A protective net (268) is fixedly installed on one side of the airflow pulverizer (1), and the second motor (264), sector gear (265) and circular gear (263) are all located inside the protective net (268).

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