Crushing device

Abstract

The present invention relates to a pulverizing device, including a grading bin and a pulverizing bin, wherein the grading bin is provided with a first driving mechanism and a grading wheel, and the first driving mechanism is connected to the grading wheel in a transmission manner; a feeding nozzle and at least two high-pressure nozzles are provided in the pulverizing bin, and materials are sprayed into the pulverizing bin by the feeding nozzle, and at least two high-pressure nozzles are symmetrically arranged, and are used to shear the materials in the pulverizing bin and form a vertical fluidized bed, so that the materials are pulverized and transmitted to the grading wheel; a grinding assembly is provided at the bottom of the pulverizing bin, and the bottom of the pulverizing bin is connected to an external air source, and the external air source provides a driving airflow to drive the materials pulverized by the grinding assembly to be transmitted to the fluidized bed. The pulverizing device of the present invention further pulverizes the large-particle materials that fall to the bottom of the pulverizing bin by arranging the grinding assembly at the bottom of the pulverizing bin, and then uses the driving airflow introduced at the bottom of the pulverizing bin to push the materials pulverized by the grinding assembly upward to the grading wheel for discharge, and the device has a simple structure and good pulverizing effect.

Description

Technical Field

[0001] The present invention relates to the technical field of pulverizing machinery, and in particular to a pulverizing device. Background Art

[0002] In the production process of ternary positive electrode materials using pyrometallurgy, the ternary positive electrode materials produced by high-temperature sintering of precursors and lithium sources are in block form, and generally require crushing equipment to crush them into the required particle size. At present, air flow mills are commonly used to crush ternary positive electrode materials. They have the characteristics of high finished product fineness. They mainly use external high-pressure air to spray high-pressure airflow into the crushing chamber through high-pressure nozzles. The materials are crushed after repeated impact and collision by the high-pressure airflow. The crushed fine particle materials enter the classification chamber with the rising airflow and are discharged by the classification wheel in the classification chamber. The existing technology has the following technical defects: materials with larger particle sizes are not easily transported by the airflow, and will sink to the bottom of the crushing chamber and cannot be crushed, and the material crushing efficiency is low; and the materials settled at the bottom of the crushing chamber need to be taken out and crushed again, the process is complicated, and the production cost is high. Summary of the invention

[0003] The purpose of the embodiment of the present invention is to provide a pulverizing device with a simple structure, high pulverizing efficiency and concise production process.

[0004] To achieve this purpose, the embodiment of the present invention adopts the following technical solutions:

[0005] A pulverizing device is provided, comprising a grading bin, wherein the grading bin is provided with a first driving mechanism and a grading wheel, wherein the first driving mechanism is drivingly connected to the grading wheel; a pulverizing bin is connected below the grading bin, wherein a feeding nozzle and at least two high-pressure nozzles are provided in the pulverizing bin, wherein materials are sprayed into the pulverizing bin by the feeding nozzle, wherein at least two high-pressure nozzles are symmetrically arranged and used for shearing materials in the pulverizing bin and forming a vertical fluidized bed, so that the materials are pulverized and transmitted to the grading wheel; a grinding assembly is provided at the bottom of the pulverizing bin, wherein the bottom of the pulverizing bin is connected to an external air source, wherein the external air source is used for providing a driving airflow flowing from the bottom of the pulverizing bin toward the fluidized bed, wherein the driving airflow drives the materials pulverized by the grinding assembly to be transmitted to the fluidized bed.

[0006] As a preferred embodiment of the crushing device, the grinding assembly includes a grinding cylinder, a grinding disc, a transmission shaft and a second driving mechanism, the grinding cylinder is fixed to the wall of the crushing bin and adjacent to the bottom of the crushing bin, the grinding disc is arranged in the grinding cylinder, and the grinding disc is spaced apart from the inner wall of the grinding cylinder and the bottom of the crushing bin, respectively, the second driving mechanism is connected to the grinding disc through the transmission shaft, and the second driving mechanism drives the transmission shaft and the grinding disc to rotate around the axis of the transmission shaft.

[0007] As a preferred solution of the pulverizing device, a plurality of pulverizing blocks are arranged at intervals on the grinding disc; and / or a plurality of pulverizing teeth are arranged at intervals on the inner side wall of the grinding cylinder.

[0008] As a preferred embodiment of the crushing device, the grinding assembly also includes a guide plate and a plurality of crushing plates, the guide plate being arranged in the grinding cylinder, the guide plate being spaced apart from the inner wall of the grinding cylinder and the grinding disc respectively, a accommodating cavity being arranged in the guide plate, an opening communicating with the accommodating cavity being opened on the side of the guide plate facing the high-pressure nozzle, the transmission shaft partially passes through the guide plate and extends into the accommodating cavity, a plurality of crushing plates are located in the accommodating cavity and are arranged on the outer peripheral side of the transmission shaft, a plurality of first through holes being opened on the side of the guide plate facing the grinding disc, the first through holes being communicated with the accommodating cavity.

[0009] As a preferred solution of the crushing device, a plurality of the crushing blocks are distributed in an array around the circumference of the rotation center of the grinding disc, the crushing blocks are provided with a first groove, the grinding disc is inserted into the first groove, and the crushing blocks are respectively spaced apart from the guide disc, the inner wall of the grinding cylinder and the bottom of the crushing bin.

[0010] As a preferred solution of the crushing device, the crushing block is provided with a first guide surface, which is inclined downward from an end close to the guide plate toward an end away from the guide plate and toward the central axis of the transmission shaft, and a plurality of the first guide surfaces and the grinding plate form a guide groove, and the outer peripheral side wall of the transmission shaft is provided with a spiral blade, and the spiral blade is located between the guide plate and the grinding plate, and the spiral blade pushes the material adjacent to the transmission shaft to move along the groove wall of the guide groove toward a direction away from the transmission shaft.

[0011] As a preferred embodiment of the crushing device, the grinding assembly also includes a baffle ring, which is sealed and connected to the grinding cylinder on one side of the bottom of the crushing bin adjacent to the baffle ring, and the baffle ring is spaced apart from the crushing block, and an air inlet channel is separated from the baffle ring and the bottom of the crushing bin, and the air inlet channel is connected to the external air source, and a ventilation hole connecting the grinding cylinder and the air inlet channel is provided in the center of the baffle ring, and a second guide surface is provided at the bottom of the crushing bin, and the second guide surface is inclined upward from an end away from the baffle ring toward an end adjacent to the baffle ring and toward the central axis of the transmission shaft, and the pushed airflow is guided to the ventilation hole along the second guide surface.

[0012] As a preferred solution of the crushing device, a mobile bin is further provided between the grading bin and the crushing bin, the grading bin and the mobile bin, the crushing bin and the mobile bin are respectively detachably connected, one of the two connecting surfaces between the grading bin and the mobile bin, the crushing bin and the mobile bin is provided with a surrounding wall in an annular manner on the outer periphery, and the other of the two connecting surfaces is provided with a boss protruding therefrom, and the boss is inserted into the surrounding wall.

[0013] As a preferred solution of the crushing device, a third driving mechanism is arranged outside the crushing bin, and the third driving mechanism is transmission connected with the grading bin to drive the grading bin to separate from the mobile bin; the crushing bin is detachably connected with a fixing component, and the fixing component includes a first lifting and rotating mechanism and a positioning plate, and the first lifting and rotating mechanism is transmission connected with the mobile bin to rotate the mobile bin to above the positioning plate.

[0014] As a preferred solution of the crushing device, the fixed component also includes a collecting box, a second lifting and rotating mechanism, a sealing cover and a gas tank. The collecting box is arranged on the positioning plate, and the positioning plate is provided with a second through hole connecting the inner cavity of the mobile bin with the inner cavity of the collecting box. The second lifting and rotating mechanism is fixed on the positioning plate, and the second lifting and rotating mechanism is transmission connected to the sealing cover. A blowing channel is provided in the sealing cover, and a plurality of blowing holes are provided on the side of the sealing cover facing the mobile bin, and the blowing holes are connected to the blowing channel. The gas tank is connected to the blowing channel to provide gas to blow toward the inner cavity of the mobile bin through the blowing holes, so that the material remaining in the mobile bin falls into the collecting box from the second through hole.

[0015] The beneficial effects of the embodiments of the present invention are as follows: by arranging a grinding assembly at the bottom of the crushing bin, large particles that are not easily transported through the fluidized bed and fall to the bottom of the crushing bin are further crushed, thereby improving the crushing efficiency of the crushing bin; a pushing airflow is introduced through the bottom of the crushing bin, so that the materials crushed by the grinding assembly are pushed upward to the fluidized bed again, and are pushed to the grading wheel after further crushing. The structure is simple, the production process is simple, the crushing effect is good, the large particles are prevented from accumulating at the bottom of the crushing bin, the investment in other peripheral crushing equipment and labor is reduced, and the production cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described in detail below based on the accompanying drawings and embodiments.

[0017] Figure 1 It is a schematic structural diagram of a crushing device according to an embodiment of the present invention.

[0018] Figure 2 for Figure 1 An enlarged schematic diagram of point A.

[0019] Figure 3 for Figure 1 An enlarged schematic diagram of point B.

[0020] Figure 4 Schematic diagram of the structure of the cover according to an embodiment of the present invention.

[0021] In the figure:

[0022] 1. Classifying bin; 2. Moving bin; 3. Crushing bin; 31. Second guide surface; 32. Boss; 4. Classifying wheel; 5. Discharge pipe; 6. High-pressure nozzle; 7. Feed nozzle; 8. Grinding cylinder; 9. Grinding disc; 91. Crushing block; 911. First guide surface; 10. Transmission shaft; 11. Second driving mechanism; 12. Guide disc; 121. Accommodating chamber; 122. First through hole; 13. Crushing plate; 14. Spiral blade; 15. Blocking ring; 151. Ventilation hole; 16. Air inlet channel; 17. Third driving mechanism; 18. First lifting and rotating mechanism; 19. Positioning plate; 191. Second through hole; 20. Collecting box; 21. Second lifting and rotating mechanism; 22. Cover; 221. Blowing channel; 222. Blowing hole; 23. Air source; 24. Connecting pipe; 25. Enclosure; 26. First connecting piece; 27. Second connecting piece; 28. First bolt. DETAILED DESCRIPTION

[0023] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0024] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0026] like Figure 1 and Figure 2As shown, the pulverizing device of the embodiment of the present invention includes a grading bin 1 and a pulverizing bin 3 connected to the bottom of the grading bin 1, the grading bin 1 is provided with a first driving mechanism and a grading wheel 4 (the position of the first driving mechanism does not affect the normal operation of the grading wheel 44, so it is not shown in the figure), and the first driving mechanism is transmission-connected to the grading wheel 4; a feed nozzle 7 and at least two high-pressure nozzles 6 are provided in the pulverizing bin 3, and the material is sprayed into the pulverizing bin 3 by the feed nozzle 7, and at least two high-pressure nozzles 6 are symmetrically arranged, which are used to shear the material in the pulverizing bin 3 and form a vertical fluidized bed, so that the material is pulverized and transmitted to the grading wheel 4; a grinding assembly is provided at the bottom of the pulverizing bin 3, and the bottom of the pulverizing bin 3 is connected to an external air source, and the external air source is used to provide a driving airflow flowing from the bottom of the pulverizing bin 3 toward the fluidized bed, and the driving airflow drives the material pulverized by the grinding assembly to be transmitted to the fluidized bed. In this embodiment, four high-pressure nozzles 6 are provided, which are evenly distributed along the central axis of the crushing bin 3, and the nozzle outlets of all high-pressure nozzles 6 are opposite to the central axis of the crushing bin 3. Two feed nozzles 7 are provided, and the two feed nozzles 7 are also arranged symmetrically about the central axis of the crushing bin 3. In this embodiment, the materials are all ternary positive electrode materials. When the uneven coarse and fine materials enter the crushing bin 3 from the feed nozzle 7, a part of the materials with smaller particles move at high speed driven by the compressed airflow ejected from the high-pressure nozzle 6, collide and crush each other at the intersection of the high-pressure nozzle 6, and the crushed materials enter the separation wheel of the grading bin 1 with the rising airflow. The first driving mechanism drives the grading wheel 4 to rotate at high speed. When the centrifugal force generated by the grading wheel 4 on the crushed materials is greater than the centripetal force formed by the viscosity of the airflow, the crushed materials are transmitted by the grading wheel 4 to the discharge pipe 5 on the grading bin 1, thereby completing the crushing and discharging; when the centripetal force of the viscosity of the airflow on the materials is greater than the centrifugal force generated by the grading wheel 4, the materials will continue to be crushed in the crushing bin 3. Another part of the large-particle materials falls to the bottom of the crushing bin 3 because gravity is greater than the thrust of the compressed air flow, and is crushed by the grinding component. The large-particle materials that are not easily transported through the fluidized bed and fall to the bottom of the crushing bin 3 are further crushed by the grinding component, thereby improving the crushing efficiency of the materials in the crushing bin 3; the pushing airflow is introduced through the bottom of the crushing bin 3, so that the materials crushed by the grinding component are pushed upward to the fluidized bed again, and are pushed to the grading wheel 4 after further crushing. The device has a simple structure, a simple production process, and a good crushing effect. It can effectively avoid the accumulation of large-particle materials at the bottom of the crushing bin 3, reduce the investment in other peripheral crushing equipment and labor, and has a low production cost.

[0027] Specifically, Figure 1 and Figure 2As shown, the grinding assembly includes a grinding cylinder 8, a grinding disc 9, a transmission shaft 10 and a second driving mechanism 11. The grinding cylinder 8 is fixed to the wall of the crushing bin 3 and is adjacent to the bottom of the crushing bin 3. The grinding disc 9 is arranged in the grinding cylinder 8. The grinding disc 9 is arranged at intervals with the inner wall of the grinding cylinder 8 and the bottom of the crushing bin 3 respectively. The second driving mechanism 11 is connected to the grinding disc 9 through the transmission shaft 10. The second driving mechanism 11 drives the transmission shaft 10 and the grinding disc 9 to rotate around the axis of the transmission shaft 10. The second driving mechanism 11 drives the transmission shaft 10 and the grinding disc 9 to rotate, so that the materials falling between the grinding cylinder 8 and the grinding disc 9 or between the grinding disc 9 and the bottom of the crushing bin 3 are sheared back and forth, so as to realize the mechanical crushing of large particles. In this embodiment, the first driving mechanism and the second driving mechanism 11 are both directly driven by the driving motor, and the rotation axis of the transmission shaft 10 is consistent with the central axis of the crushing bin 3, which effectively ensures the stability of the rotation of the grinding disc 9.

[0028] Preferably, if Figure 2 As shown, a plurality of crushing blocks 91 are arranged at intervals on the grinding disc 9; and a plurality of crushing teeth are arranged at intervals on the inner side wall of the grinding cylinder 8. By using the crushing teeth and crushing blocks 91, the crushing effect of the material falling into the grinding cylinder 8 and the grinding disc 9 can be enhanced, and the crushing efficiency of the material can be accelerated. In other embodiments, it is not limited to setting the crushing blocks 91 and the crushing teeth at the same time, and it is also possible to set the crushing teeth only on the inner side wall of the grinding cylinder 8, or to set the crushing blocks 91 only on the grinding disc 9, which also has the effect of accelerating the material crushing efficiency.

[0029] Furthermore, if Figure 2As shown, the grinding assembly also includes a guide plate 12 and a plurality of crushing plates 13. The guide plate 12 is arranged in the grinding cylinder 8. The guide plate 12 is spaced apart from the inner wall of the grinding cylinder 8 and the grinding disc 9. A receiving chamber 121 is arranged in the guide plate 12. An opening communicating with the receiving chamber 121 is provided on the side of the guide plate 12 facing the high-pressure nozzle 6. The transmission shaft 10 partially passes through the guide plate 12 and extends into the receiving chamber 121. A plurality of crushing plates 13 are located in the receiving chamber 121 and are arranged on the outer peripheral side of the transmission shaft 10. A plurality of first through holes 122 are provided on the side of the guide plate 12 facing the grinding disc 9. The first through holes 122 communicate with the receiving chamber 121. The guide plate 12 is fixed in the grinding cylinder 8 through a connecting piece and remains relatively still with the grinding cylinder 8. A portion of the dropped materials falls from the gap between the grinding cylinder 8 and the guide plate 12 to the space between the grinding disc 9 and the grinding cylinder 8 for crushing. The other part of the material falls into the guide disc 12, and the second driving mechanism 11 drives the transmission shaft 10 to rotate, thereby driving the crushing plate 13 to rotate, so as to shear and crush the material in the guide disc 12. The crushed material in the guide disc 12 is introduced into the grinding disc 9 from the first through hole 122, and the material falling from the first through hole 122 to the grinding disc 9 is further stirred and crushed by the crushing block 91 between the grinding disc 9 and the guide disc 12, and then gradually accumulated and pushed to the grinding disc 9 and the grinding cylinder 8 for further crushing, so as to further improve the crushing effect of the material. Optionally, the crushing degree of the material in the guide disc 12 can be controlled by setting the size of the first through hole 122.

[0030] Furthermore, if Figure 2 As shown, a plurality of crushing blocks 91 are arranged in an array about the circumference of the rotation center of the grinding disc 9, and the crushing blocks 91 are provided with a first groove, the grinding disc 9 is inserted into the first groove, and the crushing blocks 91 are spaced apart from the guide disc 12, the inner wall of the grinding cylinder 8, and the bottom of the crushing bin 3. By inserting the grinding disc 9 into the first groove, the crushing blocks 91 are more firmly connected to the grinding disc 9, and it is also convenient for the crushing blocks 91 to crush the materials between the grinding disc 9 and the guide disc 12, between the grinding disc 9 and the grinding cylinder 8, and between the grinding disc 9 and the bottom of the crushing bin 3. The crushing blocks 91 on multiple surfaces of the grinding disc 9 are integrally formed, which, on the one hand, facilitates the production of the crushing blocks 91 and saves production costs, and on the other hand, makes the crushing blocks 91 more evenly stressed during rotation shearing, and the rotation process more stable.

[0031] Furthermore, if Figure 2As shown, the crushing block 91 located above the grinding disc 9 is spaced apart from the transmission shaft 10 at one end adjacent to the transmission shaft 10, and the crushing block 91 is provided with a first guide surface 911, and the first guide surface 911 is inclined downward from the end close to the guide disc 12 toward the end away from the guide disc 12 and toward the central axis of the transmission shaft 10, and multiple first guide surfaces 911 form a guide groove with the grinding disc 9, and the outer peripheral side wall of the transmission shaft 10 is provided with a spiral blade 14, and the spiral blade 14 is located between the guide disc 12 and the grinding disc 9, and the spiral blade 14 pushes the material adjacent to the transmission shaft 10 to move along the groove wall of the guide groove toward the direction away from the transmission shaft 10. By utilizing the transmission shaft 10 to drive the spiral blade 14 to rotate, the spiral blade 14 pushes the material that has fallen into the guide groove to be discharged, thereby preventing the crushed material from accumulating in the guide groove and flowing into the gap between the transmission shaft 10 and the grinding disc 9, causing the transmission shaft 10 to wear or get stuck, thereby reducing the loss of the transmission shaft 10; by providing an inclined first guide surface 911, it is convenient for the spiral blade 14 to push the material outward along the first guide surface 911, and on the other hand, it can effectively prevent the material from getting stuck between the spiral blade 14 and the guide groove.

[0032] Alternatively, if Figure 2 As shown, the grinding assembly also includes a retaining ring 15, which is sealed and connected to one side of the grinding cylinder 8 adjacent to the bottom of the crushing bin 3, and the retaining ring 15 is spaced apart from the crushing block 91. The retaining ring 15 and the bottom of the crushing bin 3 are separated by an air inlet channel 16, which is connected to an external air source. A ventilation hole 151 connecting the grinding cylinder 8 and the air inlet channel 16 is provided in the center of the retaining ring 15, and the bottom of the crushing bin 3 is provided with a second guide surface 31, which is inclined upward from one end away from the retaining ring 15 toward one end adjacent to the retaining ring 15 and toward the central axis of the transmission shaft 10, and the airflow is pushed along the second guide surface 31 to the ventilation hole 151. The second guide surface 31 is provided to facilitate the guidance of the airflow, and accelerate the flow of the airflow in the air inlet channel 16.

[0033] In one embodiment, if Figure 1 and Figure 3As shown, a mobile bin 2 is further provided between the grading bin 1 and the crushing bin 3, and the grading bin 1 and the mobile bin 2, and the crushing bin 3 and the mobile bin 2 are respectively detachably connected, and one of the two connecting surfaces of the grading bin 1 and the mobile bin 2, and the crushing bin 3 and the mobile bin 2 is provided with a circle of surrounding wall 25 in an annular manner on the outer periphery, and the other of the two connecting surfaces is provided with a boss 32 protrudingly, and the boss 32 is inserted into the surrounding wall 25. The grading bin 1 and the mobile bin 2, and the mobile bin 2 and the crushing bin 3 are detachably connected to each other, and the convenience of disassembly and assembly is high. By providing the surrounding wall 25 and the boss 32, it is convenient to connect and guide the grading bin 1 and the mobile bin 2, and the crushing bin 3 and the mobile bin 2, and at the same time, more surface contacts are provided at the connection, which effectively enhances the sealing of the connection. Optionally, a first connecting member 26 is provided at one end of the outer side of the grading bin 1 adjacent to the mobile bin 2, and a third through hole is provided on the first connecting member 26. A second connecting member 27 is provided at one end of the mobile bin 2 adjacent to the grading bin 1, and a first threaded hole is provided on the second connecting member 27 corresponding to the third through hole, and a first bolt 28 passes through the first through hole 122 and is screwed into the first threaded hole to fix the grading bin 1 and the mobile bin 2. A third connecting member is provided at one end of the outer side of the mobile bin 2 adjacent to the crushing bin 3, and a fourth through hole is provided on the third connecting member. The crushing bin 3 is provided with a fourth connecting member, and a second threaded hole is provided on the fourth connecting member corresponding to the fourth through hole, and a second bolt passes through the fourth through hole and is screwed into the second threaded hole to fix the mobile bin 2 and the crushing bin 3. The bolt connection is used to strengthen the connection strength between the grading bin 1 and the mobile bin 2, and between the crushing bin 3 and the mobile bin 2. It can be understood that when crushing materials with uneven coarseness or small particles, the high-pressure nozzle 6 is normally used, and the mobile bin 2 is used to transfer materials. In other embodiments, when only large-particle materials are processed, that is, only the bottom grinding assembly is used for processing and crushing, the mobile bin 2 can be removed at this time to shorten the distance between the material at the bottom of the bin and the grading wheel 4, so that the pushing airflow at the bottom of the crushing bin 3 can push the material on the grinding assembly to the grading wheel 4, effectively reducing the pressure requirement of the pushing airflow, reducing energy consumption, and reducing production costs.

[0034] Furthermore, if Figure 1As shown, a third driving mechanism 17 is arranged outside the crushing bin 3, and the third driving mechanism 17 is connected to the grading bin 1 by transmission to drive the grading bin 1 to separate from the mobile bin 2; the crushing bin 3 is detachably connected to a fixed assembly, and the fixed assembly includes a first lifting and rotating mechanism 18 and a positioning plate 19, and the first lifting and rotating mechanism 18 is connected to the mobile bin 2 by transmission to rotate the mobile bin 2 to the top of the positioning plate 19. When only the grinding assembly at the bottom of the crushing bin 3 is needed to crush the material, the first bolt 28 and the second bolt are removed, and the grading bin 1 is driven to move upward by the third driving mechanism 17 to separate the grading bin 1 from the mobile bin 2, and then the mobile bin 2 is driven to rotate to the top of the storage box by the first lifting and rotating mechanism 18 to disassemble and store the mobile bin 2. The cooperation of the third driving mechanism 17 and the first lifting and rotating mechanism 18 facilitates the disassembly and storage of the mobile bin 2, which saves time and effort and is convenient to operate. In other embodiments, the detachable structures are all fixed by bolts. When the mobile bin 2 is placed due to space limitations or when a fixed storage area is not required, the bolts can be directly loosened to remove the fixed assembly to avoid occupying too much space.

[0035] Furthermore, if Figure 1 and Figure 4 As shown, the fixed assembly also includes a collection box 20, a second lifting and rotating mechanism 21, a cover 22 and a gas tank. The collection box 20 is arranged on the positioning plate 19. The positioning plate 19 is provided with a second through hole 191 connecting the inner cavity of the mobile bin 2 and the inner cavity of the collection box 20. The second lifting and rotating mechanism 21 is fixed on the positioning plate 19. The second lifting and rotating mechanism 21 is transmission-connected with the cover 22. A blowing channel 221 is arranged in the cover 22. A plurality of blowing holes 222 are arranged on the side of the cover 22 facing the mobile bin 2. The blowing holes 222 are connected with the blowing channel 221. The gas tank is connected with the blowing channel 221 to provide gas to blow toward the inner cavity of the mobile bin 2 through the blowing holes 222, so that the materials left in the mobile bin 2 fall into the collection box 20 from the second through hole 191. The cover 22 is used to shield and protect the mobile bin 2 to reduce the pollution of the mobile bin 2 by external substances. When the mobile warehouse 2 is disassembled and stored, the second lifting and rotating mechanism 21 drives the cover 22 to open, the first lifting and rotating mechanism 18 transfers the mobile warehouse 2 to the positioning plate 19, and the second lifting and driving mechanism drives the cover 22 to close, which can effectively protect the mobile warehouse 2 placed after disassembly. By starting the gas source 23, the gas in the gas source 23 is transmitted to the blowing channel 221 through the connecting pipe 24, and then sprayed out from the blowing hole 222. The sprayed gas can blow off the materials adhered to the mobile warehouse 2, and the fallen materials are collected in the collection box 20 through the second through hole 191. The third driving mechanism 17 can be a linear driving mechanism such as a cylinder, an oil cylinder and an electric pole. In this embodiment, the third driving mechanism 17 is driven by a cylinder and can share a gas source 23 with the high-pressure nozzle 6, saving production costs. The first lifting and rotating mechanism 18 and the second lifting and rotating mechanism 21 can use a rotary motor or a lifting and rotating cylinder.

[0036] Optionally, when the high-pressure nozzle 6 and the grinding assembly are used for crushing at the same time, the high-pressure nozzle 6 and the ventilation hole 151 can share an external high-pressure gas source 23 to save production costs. In another embodiment, when only the high-pressure nozzle 6 or the grinding assembly is used to crush the material, the high-pressure nozzle 6 and the ventilation hole 151 are independently connected to an external gas source to avoid mutual influence.

[0037] In another embodiment, if Figure 2 As shown, the cavity wall of the accommodating cavity 121 is inclined, and the inclined cavity wall is inclined downward from the end away from the grinding disc 9 toward the end adjacent to the grinding disc 9 and toward the central axis of the accommodating cavity 121, so that the material in the accommodating cavity 121 is smoothly guided along the inclined cavity wall to the bottom of the accommodating cavity 121, thereby reducing the accumulation of material in the accommodating cavity 121.

[0038] In other embodiments, the mobile warehouse 2 is not limited to being moved and stored by the third driving mechanism 17 and the second lifting and rotating mechanism 21. The mobile warehouse 2 can also be moved and stored directly by manual disassembly and manual transportation, thereby saving equipment production costs.

[0039] In the description of this article, it is necessary to understand that the terms "upper", "lower", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0040] In the description of this specification, the description of reference term "an embodiment" etc. means that the specific features, structures, materials or characteristics of the embodiment are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment.

[0041] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0042] The technical principle of the present invention is described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without paying creative labor, and these methods will fall within the scope of protection of the present invention.

Claims

1. A comminution device, characterized in that: The invention comprises a grading bin, wherein the grading bin is provided with a first driving mechanism and a grading wheel, wherein the first driving mechanism is in driving connection with the grading wheel; a crushing bin is connected below the grading bin, wherein a feeding nozzle and at least two high-pressure nozzles are provided in the crushing bin, and materials are sprayed into the crushing bin through the feeding nozzle, wherein at least two high-pressure nozzles are symmetrically arranged and used for shearing materials in the crushing bin and forming a vertical fluidized bed, so that the materials are crushed and transmitted to the grading wheel; a grinding assembly is provided at the bottom of the crushing bin, and the bottom of the crushing bin is connected to an external air source, wherein the external air source is used for providing air flowing from the bottom of the crushing bin toward the fluidized bed. A pushing airflow drives the material crushed by the grinding component to be transferred to the fluidized bed; a mobile bin is also provided between the grading bin and the crushing bin, and the grading bin and the mobile bin, the crushing bin and the mobile bin are respectively detachably connected; a third driving mechanism is provided outside the crushing bin, and the third driving mechanism is transmission-connected with the grading bin to drive the grading bin to separate from the mobile bin; the crushing bin is detachably connected with a fixed component, and the fixed component includes a first lifting and rotating mechanism and a positioning plate, and the first lifting and rotating mechanism is transmission-connected with the mobile bin to rotate the mobile bin to above the positioning plate.

2. The pulverizing device according to claim 1, characterized in that: The grinding assembly includes a grinding cylinder, a grinding disc, a transmission shaft and a second driving mechanism. The grinding cylinder is fixed to the wall of the crushing bin and is adjacent to the bottom of the crushing bin. The grinding disc is arranged in the grinding cylinder. The grinding disc is spaced apart from the inner wall of the grinding cylinder and the bottom of the crushing bin, respectively. The second driving mechanism is connected to the grinding disc through the transmission shaft. The second driving mechanism drives the transmission shaft and the grinding disc to rotate around the axis of the transmission shaft.

3. The pulverizing device according to claim 2, characterized in that: A plurality of crushing blocks are arranged at intervals on the grinding disc; and / or, The inner side wall of the grinding cylinder is provided with a plurality of crushing teeth at intervals.

4. The pulverizing device according to claim 3, characterized in that: The grinding assembly also includes a guide plate and a plurality of crushing plates, wherein the guide plate is arranged in the grinding cylinder, and the guide plate is spaced apart from the inner wall of the grinding cylinder and the grinding disc, respectively; a receiving cavity is arranged in the guide plate, and an opening communicating with the receiving cavity is opened on the side of the guide plate facing the high-pressure nozzle; the transmission shaft partially passes through the guide plate and extends into the receiving cavity; a plurality of crushing plates are located in the receiving cavity and are arranged on the outer peripheral side of the transmission shaft; a plurality of first through holes are opened on the side of the guide plate facing the grinding disc, and the first through holes are communicated with the receiving cavity.

5. The pulverizing device according to claim 4, characterized in that: The plurality of crushing blocks are arranged in an array around the rotation center of the grinding disc, the crushing blocks are provided with a first groove, the grinding disc is inserted into the first groove, and the crushing blocks are spaced apart from the guide disc, the inner wall of the grinding cylinder and the bottom of the crushing bin respectively.

6. The pulverizing device according to claim 5, characterized in that: The crushing block is provided with a first guide surface, which is inclined downward from an end close to the guide plate toward an end away from the guide plate and toward the central axis of the transmission shaft. A plurality of the first guide surfaces and the grinding plate form a guide groove. The outer peripheral side wall of the transmission shaft is provided with a spiral blade, and the spiral blade is located between the guide plate and the grinding plate. The spiral blade pushes the material adjacent to the transmission shaft to move along the groove wall of the guide groove toward a direction away from the transmission shaft.

7. The pulverizing device according to any one of claims 3 to 6, characterized in that: The grinding assembly also includes a retaining ring, which is sealed and connected to the grinding cylinder on one side of the bottom of the crushing bin adjacent to the retaining ring, and the retaining ring is spaced apart from the crushing block. An air inlet channel is separated from the retaining ring and the bottom of the crushing bin, and the air inlet channel is connected to the external air source. A ventilation hole connecting the grinding cylinder and the air inlet channel is provided at the center of the retaining ring, and a second guide surface is provided at the bottom of the crushing bin, and the second guide surface is inclined upward from an end away from the retaining ring toward an end adjacent to the retaining ring and toward the central axis of the transmission shaft, and the pushed airflow is guided to the ventilation hole along the second guide surface.

8. The pulverizing device according to claim 1, characterized in that: One of the two connecting surfaces connecting the grading bin and the mobile bin, and the crushing bin and the mobile bin is provided with a surrounding wall in an annular manner on its outer periphery, and the other of the two connecting surfaces is provided with a boss protruding therefrom, and the boss is inserted into the surrounding wall.

9. The pulverizing device according to claim 8, characterized in that: The fixed assembly also includes a collecting box, a second lifting and rotating mechanism, a sealing cover and a gas tank. The collecting box is arranged on the positioning plate. The positioning plate is provided with a second through hole connecting the inner cavity of the mobile bin with the inner cavity of the collecting box. The second lifting and rotating mechanism is fixed on the positioning plate. The second lifting and rotating mechanism is transmission-connected to the sealing cover. A blowing channel is provided in the sealing cover. A plurality of blowing holes are provided on the side of the sealing cover facing the mobile bin. The blowing holes are connected to the blowing channel. The gas tank is connected to the blowing channel to provide gas to blow toward the inner cavity of the mobile bin through the blowing holes, so that the material left in the mobile bin falls into the collecting box from the second through hole.

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