A crushing mechanism, a crushing device and an iron phosphate crusher

Abstract

The present invention provides a pulverizing mechanism, a pulverizing device and an iron phosphate pulverizer, including a bracket, a pulverizing shell is arranged at the upper end of the bracket, two relatively arranged centrifugal shells are arranged upward at the bottom of the pulverizing shell, a partition is arranged in the middle of the centrifugal shell, the centrifugal shell is divided into a conveying chamber located at the lower part and a centrifugal chamber located at the upper part through the partition, a feeding channel connecting the corresponding conveying chamber and the corresponding centrifugal chamber is provided at the edge of the partition, a plurality of feed holes connected with the corresponding conveying chamber are provided at the lower end of the centrifugal shell, and a spray nozzle is connected with the upper part of the centrifugal shell along the oblique direction; a spiral conveying rod is rotatably connected in the conveying chamber, a centrifugal shaft connected with the corresponding spiral conveying rod is rotatably connected in the centrifugal chamber, a plurality of centrifugal blades are arranged on the periphery of the centrifugal shaft, and a driving motor for driving the spiral conveying rod to rotate is installed in the bracket. The present invention can effectively pulverize ultrafine powder, has good pulverizing effect, high pulverizing efficiency, simpler equipment structure, and lower equipment cost and maintenance cost.

Description

Technical Field

[0001] The invention belongs to the field of pulverizers and relates to a pulverizing mechanism, a pulverizing device and an iron phosphate pulverizer. Background Art

[0002] In the current industrial production and scientific research fields, ultrafine powder grinding technology plays a vital role, especially in materials science, pharmaceuticals, fine chemicals and new energy material preparation. Ultrafine powder grinders, as the core equipment to realize this technology, have a direct impact on product quality and production efficiency. These devices are designed to grind raw materials to micrometer or even nanometer scales, thereby significantly increasing the surface area of ​​the material and optimizing its physical and chemical properties, such as enhancing reactivity and improving solubility.

[0003] Take the pulverization of iron phosphate as an example. As one of the first choices for positive electrode materials of lithium-ion batteries, the quality control of its pulverization process is particularly critical. The ideal iron phosphate powder should have a highly uniform particle size distribution, high purity and good crystal morphology, which is directly related to the energy density, cycle life and safety of the battery. Traditional pulverization methods are often difficult to meet such stringent requirements, especially when pulverizing to ultra-micro scale. Not only does it require a gentle pulverization process to avoid performance loss caused by thermal effects, but it must also ensure pulverization efficiency and particle size controllability.

[0004] The ultrafine powder pulverizers currently on the market, such as airflow pulverizers, vibration mills, ball mills, and various high-energy grinding equipment, can meet the needs of ultrafine pulverization to a certain extent, but they generally have problems such as complex structure, high cost, and difficult maintenance. Although airflow pulverizers can achieve low-temperature pulverization and maintain the original properties of the material, they have high energy consumption and huge equipment investment. Although vibration mills and ball mills have a wide range of applications, their pulverization efficiency is relatively low, and long-term operation can easily lead to severe wear and tear, increasing maintenance costs. In addition, the complex design of these devices makes operation and adjustment cumbersome, increasing the technical threshold of operators. Summary of the invention

[0005] The object of the present invention is to provide a pulverizing mechanism, a pulverizing device and an iron phosphate pulverizer, which can effectively perform ultrafine powder pulverization, have good pulverizing effect, high pulverizing efficiency, simpler equipment structure, and lower equipment cost and maintenance cost.

[0006] In order to solve the above technical problems, the present invention provides a pulverizing mechanism, including a bracket, a pulverizing shell is arranged at the upper end of the bracket, two oppositely arranged centrifugal shells are arranged upward from the bottom of the pulverizing shell, a partition is arranged in the middle of each centrifugal shell, each centrifugal shell is divided into a conveying chamber located at the lower part and a centrifugal chamber located at the upper part by the partition, a feeding channel connecting the corresponding conveying chamber and the corresponding centrifugal chamber is opened at the edge of each partition, a plurality of feeding holes connected with the corresponding conveying chamber are opened at the lower end of each centrifugal shell, a spray nozzle connected with the corresponding centrifugal chamber is arranged at the oblique direction of the upper part of each centrifugal shell, and the openings of the two spray nozzles are arranged oppositely, so that the materials sprayed from the two spray nozzles can collide with each other at high speed;

[0007] A spiral conveying rod is rotatably connected in each conveying chamber, a centrifugal shaft connected to the corresponding spiral conveying rod is rotatably connected in each centrifugal chamber, a plurality of centrifugal blades are arranged on the periphery of each centrifugal shaft, the lower end of each spiral conveying rod passes downward through the crushing shell and is provided with a transmission gear, a driving motor is installed in the bracket, a power output shaft of the driving motor is connected to a driving gear for driving two transmission gears to rotate, and the driving motor drives the two transmission gears to rotate towards each other.

[0008] By adopting the above technical solution, after the material is added into the crushing shell, the material gradually enters into the conveying chamber through the feed hole, and the driving motor drives the spiral conveying rod to rotate, conveys the material upward, and enters into the centrifugal chamber through the feed channel. Under the high-speed rotation of the centrifugal shaft, the centrifugal blades push the material to centrifugal motion and finally eject it from the injection nozzle at high speed. The materials ejected from the two injection nozzles can collide with each other at high speed, and the materials are crushed by high-speed collision, friction and shearing.

[0009] The present invention is further configured such that each partition includes a low-speed cavity located at the bottom and a high-speed cavity located at the top, each spiral conveying rod extends upward into the corresponding low-speed cavity and is provided with a low-speed gear, each centrifugal shaft extends downward into the corresponding high-speed cavity and is provided with a high-speed gear, the outer diameter of each high-speed gear is smaller than the outer diameter of the corresponding low-speed gear, each low-speed cavity is rotatably connected to the outer periphery of the corresponding low-speed gear with a plurality of small planetary gears meshing therewith, and each small planetary gear is connected to a large planetary gear meshing with the corresponding high-speed gear in the corresponding high-speed cavity.

[0010] The present invention is further configured such that the bottom of each centrifugal shell forms two oppositely arranged conical material gathering parts downward, and each centrifugal shell is arranged in a corresponding conical material gathering part.

[0011] The present invention is further configured such that the bracket is provided with a transmission cavity at the lower end of the centrifugal shell, and the two transmission gears and the driving gear are rotatably connected in the transmission cavity.

[0012] The present invention is further configured such that the driving gear is meshed with one of the transmission gears, and a connecting gear meshed with the driving gear and the other transmission gear is rotatably connected in the transmission cavity.

[0013] The present invention also discloses a crushing device, wherein a feeding hopper is provided at the upper end of the crushing shell, a feeding channel is provided at the lower end of the feeding hopper and horizontally extends into the crushing shell, a feeding motor is installed on one side of the lower part of the feeding hopper, a spiral feeding rod connected to the power output shaft of the feeding motor is rotatably connected in the feeding channel, a strip feeding hole is opened on the lower side of the feeding channel, an air intake channel is provided on one side of the crushing shell, a blower is installed in the air intake channel, and a side of the crushing shell away from the blower is connected to a wind selection discharge pipe.

[0014] The present invention is further configured such that the bottom of the feeding hopper is inclined toward the feeding channel.

[0015] The present invention also discloses a pulverizing device, which also includes a vortex sedimentation tank, the lower part of which is conical, and the side wall of the vortex sedimentation tank is horizontally provided with a cross-sectional feed pipe connected with the air selection discharge pipe along its cross-sectional direction, the lower end of the vortex sedimentation tank is connected with a horizontally arranged discharge barrel, and the discharge barrel is downwardly provided with a discharge pipe connected with it, a rotating shaft is rotatably connected inside the discharge barrel, and a plurality of air-blocking discharge pieces are arranged on the outer periphery of the rotating shaft, and the free edge of each air-blocking discharge piece can contact the inner wall of the discharge barrel, and a discharge motor for driving the rotating shaft to rotate is installed at one end of the discharge barrel, and an exhaust port is provided on the upper part of the vortex sedimentation tank along its tangential direction, and the free end of the exhaust port is connected with an air flow circulation pipe connected with the air inlet channel.

[0016] By adopting the above technical scheme, the lighter powder that meets the requirements is blown up by the action of the blower, and the larger powder that does not meet the requirements continues to fall to the bottom of the conical gathering part for automatic circulation crushing. The powder that meets the requirements is discharged from the air separation discharge pipe under the action of air separation, and enters the vortex sedimentation tank from the cross-section direction, forming a slowly downward vortex in the vortex sedimentation tank. In addition, since the airflow velocity slows down when entering the large space from the small space, the powder slowly settles to the bottom of the vortex sedimentation tank due to the lack of airflow thrust. The discharge motor drives the air blocking and discharge pieces to rotate continuously, and the powder fallen on it is gradually discharged downward. After the airflow reaches the bottom of the vortex sedimentation tank, it will pass through the blocking inner cylinder from the middle upward, and be blown into the crushing shell again by the blower through the airflow circulation pipe at the upper end of the vortex sedimentation tank for circulation, thereby realizing the internal circulation of the airflow, reducing the complicated procedure of air filtration, and avoiding material loss.

[0017] The present invention is further configured such that a barrier inner cylinder is provided in the middle of the vortex sedimentation tank, the lower end of the barrier inner cylinder is lower than the section feed pipe, and both upper and lower ends of the barrier inner cylinder are open.

[0018] The present invention is further configured such that a dust filter is provided in the exhaust port.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] First, the present invention uses a unique double-conical material gathering part and high-speed centrifugal impact design to automatically convey the material into the centrifugal chamber through a spiral conveying rod, and then throws the material out at high speed through centrifugal blades. The materials thrown out at high speed from two relative positions collide with each other at high speed, and the materials are crushed by high-speed collision, friction and shearing, thereby achieving efficient crushing of the material, which not only improves the crushing efficiency, but also ensures the uniformity and fineness of the product particle size. It is particularly suitable for the treatment of materials with strict requirements on particle size distribution, such as iron phosphate. Larger particles that do not meet the standards are automatically recycled back to the crushing process until the fineness requirements are met, thereby significantly improving the utilization rate of the material.

[0021] Secondly, the present invention realizes the precise matching of different speeds of the screw conveying rod and the centrifugal shaft through the application of a multi-stage planetary gear transmission system, ensuring that the material can maintain a higher centrifugal speed during the stable conveying process, so that the material can be ejected more and the crushing effect is enhanced.

[0022] Third, the innovative vortex sedimentation tank design and airflow internal circulation mechanism of the present invention can effectively collect and recycle airflow, reduce dust pollution and energy waste caused by external exhaust, and do not require the use of additional filtering equipment for air filtration. In combination with efficient blowers and airflow circulation pipelines, energy conservation and emission reduction are achieved, which meets the requirements of modern green production.

[0023] Fourthly, although the equipment structure of the present invention is sophisticated, the modular design and easy-to-maintain components greatly simplify daily maintenance work and reduce long-term operating costs. At the same time, due to the structural design of the internal circulation of the airflow, the air does not need to be discharged to the outside, and there is no need for cumbersome air filter devices, which reduces the cost of air filtration and saves costs for the enterprise. It also makes the structure of the present invention simpler, the crushing mechanism is compact, and the space occupied is smaller, which is more conducive to promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a partial cross-sectional view used to show the internal structure of the crushed shell;

[0026] Figure 3Mainly used to display the transmission gears, driving teeth and connecting gears in the transmission cavity;

[0027] Figure 4 It is a partial cross-sectional view used to show the internal structure of the centrifugal casing;

[0028] Figure 5 It is a partial cross-sectional view used to show the internal structure of the compartment;

[0029] Figure 6 It is a partial cross-sectional view used to show the internal structure of the vortex sedimentation tank;

[0030] Figure 7 It is a partial cross-sectional view used to show the internal structure of the discharge barrel.

[0031] Among them, 1. bracket; 2. crushing shell; 3. conical gathering part; 4. centrifugal shell; 5. partition; 6. conveying chamber; 7. centrifugal chamber; 8. feeding channel; 9. feeding hole; 10. spray nozzle; 11. spiral conveying rod; 12. centrifugal shaft; 13. centrifugal blades; 14. transmission chamber; 15. transmission gear; 16. driving motor; 17. driving gear; 18. connecting gear; 19. low speed chamber; 20. high speed chamber; 21. low speed gear; 22. high speed gear; 23. asteroid Gear; 24, large planetary gear; 25, feeding hopper; 26, feeding channel; 27, feeding motor; 28, spiral feeding rod; 29, strip feeding hole; 30, air inlet channel; 31, blower; 32, air separation discharge pipe; 33, vortex sedimentation tank; 34, section feed pipe; 35, barrier inner cylinder; 36, discharge cylinder; 37, discharge pipe; 38, rotating shaft; 39, air blocking discharge sheet; 40, discharge motor; 41, exhaust port; 42, dust filter; 43, air circulation pipe. DETAILED DESCRIPTION

[0032] The following is a further detailed description of a pulverizing mechanism, a pulverizing device and an iron phosphate pulverizer proposed by the present invention in combination with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present invention will become clearer. It should be noted that the accompanying drawings are all in a very simplified form and are not in precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. The same or similar reference numerals in the accompanying drawings represent the same or similar parts.

[0033] Example, see Figure 1-7, including a bracket 1, a crushing shell 2 is arranged at the upper end of the bracket 1, and the bottom of the centrifugal shell 4 forms two oppositely arranged conical material gathering parts 3 downwardly, and a centrifugal shell 4 is arranged upwardly at the bottom of each conical material gathering part 3 in the crushing shell 2, and a partition 5 is arranged in the middle of each centrifugal shell 4. Each centrifugal shell 4 is divided into a conveying chamber 6 located at the lower part and a centrifugal chamber 7 located at the upper part by the partition 5. A conveying channel 8 connecting the corresponding conveying chamber 6 and the corresponding centrifugal chamber 7 is opened at the edge of each partition 5, so that the material can pass through the conveying channel from the conveying chamber 6 into the centrifugal chamber 7. The lower end of each centrifugal shell 4 is provided with a plurality of feed holes 9 connected with the corresponding conveying chamber 6, so that the material can enter the conveying chamber 6 through the feed holes 9. A spray nozzle 10 connected with the corresponding centrifugal chamber 7 is provided in the oblique direction of the upper part of each centrifugal shell 4. The material after high-speed centrifugation is finally sprayed out from the spray nozzle 10. The openings of the two spray nozzles 10 are arranged opposite to each other, so that the materials sprayed from the two spray nozzles 10 can collide with each other at high speed.

[0034] A screw conveying rod 11 is rotatably connected in each conveying chamber 6. When the screw conveying rod 11 rotates, it conveys the material from the conveying chamber 6 upward to the centrifugal chamber 7. A centrifugal shaft 12 connected to the corresponding screw conveying rod 11 is rotatably connected in each centrifugal chamber 7. A plurality of centrifugal blades 13 are arranged on the periphery of each centrifugal shaft 12. Under the rotation of the centrifugal shaft 12, the centrifugal blades 13 push the material to centrifugal motion. A transmission chamber 14 is arranged at the lower end of the centrifugal shell 4 of the bracket 1. The lower end of each screw conveying rod 11 passes through the crushing shell 2 downward and extends into the transmission chamber 14, in which a transmission gear 15 is arranged. A driving motor 16 is installed in the bracket 1. The power output shaft of the driving motor 16 is connected to a driving gear 17 extending into the transmission chamber 14. The driving gear 17 is meshed with one of the transmission gears 15. A connecting gear 18 meshed between the driving gear 17 and the other transmission gear 15 is rotatably connected in the transmission chamber 14. The driving motor 16 drives the two transmission gears 15 to rotate toward each other, so that the material can be sprayed out from the two opposite spray nozzles 10.

[0035] Each compartment 5 includes a low-speed cavity 19 located at the bottom and a high-speed cavity 20 located at the top. Each spiral conveying rod 11 extends upward into the corresponding low-speed cavity 19 and is provided with a low-speed gear 21. Each centrifugal shaft 12 extends downward into the corresponding high-speed cavity 20 and is provided with a high-speed gear 22. The outer diameter of each high-speed gear 22 is smaller than the outer diameter of the corresponding low-speed gear 21. Three small planetary gears 23 meshing with the outer circumference of the corresponding low-speed gear 21 are rotatably connected in each low-speed cavity 19. Each small planetary gear 23 is connected to a large planetary gear 24 meshing with the corresponding high-speed gear 22 in the corresponding high-speed cavity 20. Since the outer diameter of the high-speed gear 22 is smaller than the outer diameter of the low-speed gear 21, the rotation speed of the high-speed gear 22 is higher than the rotation speed of the low-speed gear 21 under the transmission of the coaxially rotating planetary gears, and finally the rotation speed of the centrifugal shaft 12 is higher than the rotation speed of the spiral conveying rod 11.

[0036] A feeding hopper 25 is provided at the upper end of the pulverizing shell 2, and a feeding channel 26 is provided at the lower end of the feeding hopper 25, which horizontally extends into the pulverizing shell 2. The bottom of the feeding hopper 25 is inclined toward the feeding channel 26, and a feeding motor 27 is installed on one side of the lower part of the feeding hopper 25. A spiral feeding rod 28 connected to the power output shaft of the feeding motor 27 is rotatably connected in the feeding channel 26, and a strip-shaped feeding hole 29 is opened on the lower side of the feeding channel 26. The material is transported into the pulverizing shell 2 by the rotation of the spiral feeding rod 28. An air intake channel 30 is provided on one side of the pulverizing shell 2, and a blower 31 is installed in the air intake channel 30. A side of the pulverizing shell 2 away from the blower 31 is connected to a wind selection discharge pipe 32, and the wind force generated by the blower 31 blows up the lighter powder and discharges it from the wind selection discharge pipe 32, so that the qualified pulverized material is discharged from the pulverizing shell 2.

[0037] The vortex settling tank 33 also includes a vortex settling tank 33, the lower part of which is conical, and the side wall of the vortex settling tank 33 is horizontally provided with a section feed pipe 34 connected to the air selection discharge pipe 32 along its section direction, and a barrier inner cylinder 35 is provided in the middle part of the vortex settling tank 33, the upper end of the barrier inner cylinder 35 is higher than the section feed pipe 34, and the lower end of the barrier inner cylinder 35 is lower than the section feed pipe 34, and the upper and lower ends of the barrier inner cylinder 35 are both opened, so that after the airflow enters from the section feed pipe 34, it is blocked by the barrier inner cylinder 35 and forms a downward vortex around the barrier inner cylinder 35, so that the powder slowly settles at the bottom of the vortex settling tank 33, and the airflow finally flows from bottom to top through the barrier inner cylinder 35 to the upper part. The lower end of the vortex sedimentation tank 33 is connected to a horizontally arranged discharge barrel 36, and a discharge pipe 37 with an opening at the lower end and connected to the discharge barrel 36 is arranged downwardly. A rotating shaft 38 is rotatably connected inside the discharge barrel 36, and a plurality of air-blocking discharge pieces 39 are arranged on the outer periphery of the rotating shaft 38. The free edge of each air-blocking discharge piece 39 can contact the inner wall of the discharge barrel 36, and a discharge motor 40 for driving the rotating shaft 38 to rotate is installed at one end of the discharge barrel 36, so that during the rotation process, there are always at least two air-blocking discharge pieces 39 blocking the discharge barrel 36 to prevent the airflow from being discharged downward from the discharge barrel 36. The vortex sedimentation tank 33 is provided with an exhaust port 41 along the tangential direction of the upper part of the barrier inner cylinder 35, and a dust filter 42 is provided in the exhaust port 41. The dust filter 42 is used to filter out the powder entering the exhaust port 41 along the air flow. The free end of the exhaust port 41 is connected to an air circulation pipe 43 connected to the air inlet channel 30. The airflow flowing to the upper part is finally blown into the crushing shell 2 again by the blower 31 through the air circulation pipe 43 for circulation.

[0038] Working principle: After adding the material to be crushed into the feeding hopper 25, the feeding motor 27 starts to drive the spiral feeding rod 28 to rotate, and the material falling into the feeding channel 26 is pushed by the spiral feeding rod 28 to fall into the crushing shell 2 from the strip feeding hole 29. The material falling into the crushing shell 2 falls into the conical gathering part 3, and then gradually enters the conveying chamber 6 through the feeding hole 9. The driving motor 16 drives the spiral conveying rod 11 to rotate, and conveys the material upward, and enters the centrifugal chamber 7 through the feeding channel 8. Under the high-speed rotation of the centrifugal shaft 12, the centrifugal blades 13 push the material to centrifugal motion and finally spray it out from the injection nozzle 10 at a high speed. The materials sprayed from the two injection nozzles 10 can collide with each other at a high speed, and the materials are crushed by high-speed collision, friction and shearing.

[0039] Subsequently, the lighter powder that meets the requirements is blown up by the action of the blower 31, and the larger powder that does not meet the requirements continues to fall to the bottom of the conical gathering part 3 for automatic circulation crushing. The powder that meets the requirements is discharged from the air separation discharge pipe 32 under the action of air separation, and enters the vortex sedimentation tank 33 from the cross-sectional direction, where a slowly downward vortex is formed in the vortex sedimentation tank 33. Moreover, since the airflow slows down when entering the large space from the small space, the powder slowly settles to the bottom of the vortex sedimentation tank 33 due to the lack of airflow thrust. The discharge motor 40 drives the air blocking discharge piece 39 to rotate continuously, and gradually discharges the powder fallen on it downward. After the airflow reaches the bottom of the vortex sedimentation tank 33, it will pass through the blocking inner cylinder 35 upward from the middle, and at the upper end of the vortex sedimentation tank 33, it will be blown into the crushing shell 2 again by the blower 31 through the airflow circulation pipe 43 to circulate, thereby realizing the internal circulation of the airflow, reducing the complicated procedure of air filtration, and avoiding material loss.

[0040] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0041] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A pulverizing mechanism, comprising a support (1), wherein a pulverizing shell (2) is provided at the upper end of the support (1), characterized in that: Two oppositely arranged centrifugal shells (4) are arranged upward from the bottom of the crushing shell (2), a partition (5) is arranged in the middle of each centrifugal shell (4), and each centrifugal shell (4) is divided into a conveying chamber (6) located at the bottom and a centrifugal chamber (7) located at the top by the partition (5), and a feeding channel (8) connected to the corresponding conveying chamber (6) and the corresponding centrifugal chamber (7) is opened at the edge of each partition (5), and a plurality of feeding holes (9) connected to the corresponding conveying chamber (6) are opened at the lower end of each centrifugal shell (4), and a spray nozzle (10) connected to the corresponding centrifugal chamber (7) is arranged in the oblique direction of the upper part of each centrifugal shell (4), and the openings of the two spray nozzles (10) are arranged opposite to each other, so that the materials sprayed from the two spray nozzles (10) can collide with each other at high speed; Each conveying chamber (6) is rotatably connected to a screw conveying rod (11), each centrifugal chamber (7) is rotatably connected to a centrifugal shaft (12) connected to the corresponding screw conveying rod (11), a plurality of centrifugal blades (13) are arranged on the outer periphery of each centrifugal shaft (12), the lower end of each screw conveying rod (11) is downwardly extended out of the pulverizing shell (2) and is provided with a transmission gear (15), a driving motor (16) is installed in the bracket (1), a power output shaft of the driving motor (16) is connected to a driving gear (17) for driving the two transmission gears (15) to rotate, and the driving motor (16) drives the two transmission gears (15) to rotate in opposite directions; Each partition (5) comprises a low-speed cavity (19) at the bottom and a high-speed cavity (20) at the top, each spiral conveying rod (11) extends upward into a low-speed gear (21) provided in the corresponding low-speed cavity (19), each centrifugal shaft (12) extends downward into a high-speed gear (22) provided in the corresponding high-speed cavity (20), the outer diameter of each high-speed gear (22) is smaller than the outer diameter of the corresponding low-speed gear (21), each low-speed cavity (19) is provided with a plurality of small planetary gears (23) rotatably connected to the outer circumference of the corresponding low-speed gear (21) and meshing with the small planetary gears (23), and each small planetary gear (23) is connected to a large planetary gear (24) meshing with the corresponding high-speed gear (22) in the corresponding high-speed cavity (20); The bottom of the centrifugal shell (4) is downwardly formed with two oppositely arranged conical material gathering parts (3), and each centrifugal shell (4) is arranged in a corresponding conical material gathering part (3); The support (1) is provided with a transmission cavity (14) at the lower end of the centrifugal housing (4), and the two transmission gears (15) and the driving gear (17) are rotatably connected in the transmission cavity (14); The driving gear (17) is meshed with one of the transmission gears (15), and a connecting gear (18) meshed between the driving gear (17) and the other transmission gear (15) is rotatably connected in the transmission cavity (14).

2. A pulverizing device, based on the pulverizing mechanism according to claim 1, characterized in that: A feeding hopper (25) is provided at the upper end of the pulverizing shell (2), and a feeding channel (26) extending horizontally into the pulverizing shell (2) is provided at the lower end of the feeding hopper (25). A feeding motor (27) is installed on one side of the lower part of the feeding hopper (25). A spiral feeding rod (28) connected to the power output shaft of the feeding motor (27) is rotatably connected in the feeding channel (26). A strip-shaped feeding hole (29) is opened on the lower side of the feeding channel (26). An air intake channel (30) is provided on one side of the pulverizing shell (2), and a blower (31) is installed in the air intake channel (30). A side of the pulverizing shell (2) away from the blower (31) is connected to a wind selection discharge pipe (32).

3. A comminution device according to claim 2, characterized in that: The bottom of the feeding hopper (25) is inclined toward the feeding channel (26).

4. An iron phosphate crusher, based on the crushing device according to claim 3, characterized in that: The invention also comprises a vortex sedimentation tank (33), the lower part of which is conical, and the side wall of the vortex sedimentation tank (33) is horizontally provided with a section feed pipe (34) connected with the air separation discharge pipe (32) along the section direction thereof, and the lower end of the vortex sedimentation tank (33) is connected with a horizontally arranged discharge barrel (36), and the discharge barrel (36) is downwardly provided with a discharge pipe (37) connected thereto, and a rotating shaft (38) is rotatably connected inside the discharge barrel (36), and the rotating shaft (38) is ) are provided with a plurality of air-blocking and discharge sheets (39) on the periphery thereof, the free edge of each air-blocking and discharge sheet (39) being capable of contacting the inner wall of the discharge barrel (36), a discharge motor (40) for driving the rotating shaft (38) to rotate is installed at one end of the discharge barrel (36), an exhaust port (41) is provided at the upper portion of the vortex sedimentation tank (33) along its tangential direction, and the free end of the exhaust port (41) is connected to an air circulation pipe (43) connected to the air inlet channel (30).

5. The iron phosphate pulverizer according to claim 4, characterized in that: A barrier inner cylinder (35) is provided in the middle of the vortex sedimentation tank (33), the lower end of the barrier inner cylinder (35) is lower than the section feed pipe (34), and both upper and lower ends of the barrier inner cylinder (35) are open.

6. The iron phosphate pulverizer according to claim 4, characterized in that: A dust filter (42) is arranged in the exhaust port (41).

Images