A graphite negative electrode material grinding and collecting device

Abstract

The present invention discloses a graphite negative electrode material grinding and collecting device, which belongs to the field of graphite grinding technology. It includes a tank body, the tank body is equipped with a feed hopper, the lower part of the tank body is equipped with a material collecting tank, the material collecting tank is fixedly connected and connected to a support frame located in the tank body, the support frame is fixedly connected and connected to a pipeline, the tank body is rotatably connected to a lower pressure plate rotatably connected to the pipeline, the tank body is slidably connected to a slide cylinder above the lower pressure plate, the lower side of the slide cylinder is fixedly connected to an upper pressure plate, the outer side of the tank body is fixedly connected to a first driving member, the slide cylinder is equipped with a vibration element, the tank body is provided with a filter, and the filter is externally connected to an exhaust fan through a connecting pipe. The present invention uses the blowing of airflow in the process of grinding graphite to blow out the required particle size out of the grinding position in time by air selection, so as to ensure the yield rate in the graphite grinding process and reduce the waste of materials.

Description

Technical Field

[0001] The invention relates to the technical field of graphite grinding, and in particular to a graphite negative electrode material grinding and collecting device. Background Art

[0002] Graphite is a special type of carbon with good electrical conductivity. It is often used as the negative electrode material of batteries. In the process of making graphite into the negative electrode of the battery, it needs to be ground into particles with the required particle size to facilitate subsequent processing. The grinding time of existing grinding equipment is mostly fixed, and all graphite particles will be taken out only after the time is up. However, due to the different sizes of different graphite blocks, the grinding time required is also different. After some graphite particles reach the required particle size, they cannot be separated immediately. This will cause the graphite particles that meet the required particle size to continue to be ground, causing their particle size to continue to decrease and be over-ground. If the particles that meet the requirements are screened out regularly during the grinding process, the grinding process will be too cumbersome and the grinding efficiency will be low. Summary of the invention

[0003] In order to overcome the disadvantage that part of graphite is over-grinded and thus wastes the graphite, the present invention provides a graphite negative electrode material grinding and collecting device.

[0004] The technical solution of the present invention is: a graphite negative electrode material grinding and collecting device, including a tank body, a through hole with a filter screen installed on the lower side of the tank body, a feed hopper installed on the tank body, a material receiving tank installed on the lower part of the tank body, the material receiving tank is fixedly connected to and communicated with a support frame located in the tank body, the support frame is fixedly connected to and communicated with a pipeline, the tank body is rotatably connected to a lower pressure plate rotatably connected to the pipeline, the tank body is slidably connected to a slide cylinder above the lower pressure plate, an upper pressure plate is fixedly connected to the lower side of the slide cylinder, and the outlet of the feed hopper is located between the lower pressure plate and the upper pressure plate The outer side of the tank body is fixed with a first driving member fixed to the slide cylinder, the slide cylinder is equipped with a vibrating element, the outer side of the tank body is fixed with a second driving member through a bracket, the pipeline is fixed with a sleeve shell rotatably connected to the lower pressure plate, the output shaft of the second driving member is rotatably connected to the sleeve shell through a rotating rod, a transmission member located in the sleeve shell is arranged between the rotating rod on the output shaft of the second driving member and the lower pressure plate, the tank body is provided with a filter element, the filter element is externally connected to an exhaust fan through a connecting pipe, and a scraping mechanism for cleaning the filter element is arranged on the upper side of the tank body.

[0005] As a preferred embodiment, the opposite sides of the lower pressure plate and the upper pressure plate are fixed with evenly distributed grinding rings, the grinding rings on the lower pressure plate and the grinding rings on the upper pressure plate are staggered, and the height and thickness of the grinding rings on the lower pressure plate and the grinding rings on the upper pressure plate decrease successively from the outside to the inside.

[0006] Preferably, the scraping mechanism includes a third driving member, the third driving member is fixedly connected to the upper side of the tank body, the telescopic end of the third driving member is fixedly connected to the connecting pipe on the filter element through a bracket, a fixing sleeve is fixedly connected to the upper side of the tank body in a penetrating manner, the fixing sleeve is slidably connected to a scraping ring located in the tank body, the scraping ring is in contact and cooperate with the filter element, and an unlocking component for releasing the scraping ring is provided on the side of the fixing sleeve close to the scraping ring.

[0007] As a preference, the middle portion of the upper side of the scraper ring is recessed downwards for guiding and collecting materials.

[0008] As a preferred embodiment, the unlocking component includes circumferentially evenly distributed swivel hooks, which are rotatably connected to the side of the fixed sleeve close to the scraper ring, and the scraper ring is in contact with the pipe. The fixed sleeve is provided with a circumferentially distributed first elastic sheet, and the swivel hook is extruded and fitted with the adjacent first elastic sheet. The scraper ring is rotatably connected to a side close to the fixed sleeve with a circumferentially evenly distributed limiting piece, and the limiting piece is limitedly fitted with the adjacent swivel hook. The scraper ring is provided with a circumferentially evenly distributed second elastic sheet, and the limiting piece is extruded and fitted with the adjacent second elastic sheet. The filter element is fixedly connected to a side away from the scraper ring with an extrusion ring, and the circumferentially evenly distributed swivel hooks are extruded and fitted with the extrusion ring.

[0009] Preferably, the middle part of the filter element is hourglass-shaped, the inner diameter of the scraper ring is larger than the diameter of the hourglass-shaped part of the filter element, the outer diameter of the lower part of the filter element is larger than the inner diameter of the scraper ring, and the inner diameter of the scraper ring is the same as the diameter of other positions of the filter element.

[0010] As a preference, the sum of the distance between the hourglass-shaped portion of the fixed sleeve and the scraper ring in the vertical direction and the downward displacement of the scraper ring is equal to the contraction amount of the third driving member, so as to ensure smooth progress of the collection process.

[0011] As a preferred embodiment, it also includes a rotating blade fan, which is rotatably connected to the lower side of the casing, and the rotating blade fan is rotatably connected to the pipeline. An accelerator is installed in the casing, and the rotating rod of the output shaft of the second driving member is connected to the input end of the accelerator. A transmission member is arranged between the rotating blade fan and the output end of the accelerator, and the support frame is provided with circumferentially uniformly distributed through grooves, and a filter screen located in the support frame is fixedly connected between the receiving tank and the pipeline.

[0012] As a preference, the support frame is in a truncated cone shape, the diameter of the upper side of the support frame is smaller than the diameter of the lower side, the support frame through groove is in an isosceles triangle shape, and the width of the support frame through groove gradually increases from its central axis to the periphery, for guiding gas flow.

[0013] As a preference, the filter screen is in a truncated cone shape, and the diameter of the upper side of the filter screen is smaller than the diameter of the lower side thereof, so as to reduce the adhesion of materials.

[0014] Compared with the prior art, the technical effect achieved by the present invention is as follows: the present invention utilizes the blowing of airflow in the process of grinding graphite to blow the particles meeting the requirements out of the grinding position in time by air selection, so as to ensure the yield of graphite grinding and reduce material waste; the graphite particles attached to the filter element are scraped off at regular intervals to ensure the adsorption strength of the filter element, and the scraped graphite particles are collected in time by setting the hourglass shape in the middle, so as to prevent the graphite particles in the scraping ring from falling out of the pipeline from its periphery and affecting the collection process; the air circulation is formed in the tank body, and the graphite particles are driven to move by air flow, so as to accelerate the graphite particles to enter the collecting tank, increase the speed of graphite particle collection, and improve the working efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following is a brief introduction to the drawings required for use in the embodiments or descriptions of the prior art, so as to facilitate the explanation of the technical solutions in the embodiments of the present application or the prior art.

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure inside the tank of the present invention;

[0018] Figure 3 It is a three-dimensional structural cross-sectional view of the slide tube and the sleeve shell of the present invention;

[0019] Figure 4 It is a three-dimensional structural cross-sectional view of the lower pressing plate and the upper pressing plate of the present invention;

[0020] Figure 5 It is a three-dimensional structural schematic diagram of the lower pressing plate, the second driving member and the sleeve shell of the present invention;

[0021] Figure 6 An exploded view of the pipeline, the lower pressure plate and the rotating blade fan of the present invention;

[0022] Figure 7 It is a three-dimensional structural schematic diagram of the filter element, the fixing sleeve and the scraper ring of the present invention;

[0023] Figure 8 It is a three-dimensional structural cross-sectional view of the fixing sleeve of the present invention;

[0024] Fig. 9 It is a three-dimensional structural schematic diagram of the rotating hook, the first elastic sheet and the limiting member of the present invention;

[0025] Fig.10It is a schematic diagram of the three-dimensional structure of the rotating blade fan, the accelerator and the filter screen of the present invention;

[0026] Fig.11 It is a schematic diagram of the three-dimensional structure of the material receiving tank, the support frame and the filter screen of the present invention.

[0027] The names and serial numbers of the parts in the figure are: 1-tank body, 2-feed hopper, 3-receiving tank, 4-support frame, 5-pipeline, 6-lower pressure plate, 7-slide cylinder, 8-upper pressure plate, 9-first driving member, 10-vibrating element, 11-second driving member, 12-casing, 13-third driving member, 131-filter element, 132-extrusion ring, 14-fixing sleeve, 15-scraper ring, 16-swivel hook, 17-first elastic sheet, 18-limiting member, 19-second elastic sheet, 20-rotating blade fan, 21-accelerator, 22-filter screen. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the protection scope and application scope of the present invention are not limited.

[0029] In the existing process of grinding graphite, after adjusting the grinding time, it is only necessary to wait until the time is over and take it out. However, during the grinding process, there will be graphite particles that have already been ground to a qualified size. Continuing grinding will cause the size to continue to decrease, resulting in a waste of graphite. If the graphite is taken out regularly during the grinding process and the graphite particles with a qualified particle size are screened out, it is necessary to always pay attention to the particle size of the graphite particles in the grinding device, repeatedly turn on and off the grinding device, and screen the graphite particles multiple times, making the grinding process complicated and lengthy. For this reason, the present invention utilizes air flow to move the graphite particles with a qualified particle size between the lower pressure plate 6 and the upper pressure plate 8 out of the grinding area, and move them to the filter 131, and then scrape and guide them through the scraping mechanism so that the graphite particles with a qualified particle size fall into the receiving tank 3 to ensure the grinding efficiency.

[0030] Embodiment 1: A graphite negative electrode material grinding and collecting device, combined with Figure 1-Figure 7As shown, it includes a tank body 1, the lower side of the tank body 1 is provided with circumferentially evenly distributed through holes, a filter is installed in the through holes of the tank body 1, a feed hopper 2 is installed in the middle of the side wall of the tank body 1, and a receiving tank 3 is installed at the lower part of the tank body 1. The receiving tank 3 is fixedly connected and connected to a support frame 4 located in the tank body 1, and a pipeline 5 is fixedly connected and connected to the support frame 4. The upper side of the pipeline 5 is an inverted frustum, which is convenient for the entry of graphite particles. The ground graphite particles enter the receiving tank 3 through the pipeline 5 and the support frame 4 to be collected. The middle and lower part of the tank body 1 is rotatably connected to a lower pressure plate 6, and the lower pressure plate 6 is rotatably connected to the pipeline 5. The middle and upper part of the tank body 1 is slidably connected to a slide cylinder 7, and the lower side of the slide cylinder 7 is fixedly connected to an upper pressure plate 6. Plate 8, the lower pressing plate 6 and the upper pressing plate 8 are both inverted truncated cone-shaped, and the opposite sides of the lower pressing plate 6 and the upper pressing plate 8 are fixed with uniformly distributed grinding rings, and the grinding rings on the lower pressing plate 6 and the grinding rings on the upper pressing plate 8 are staggered, and the height and thickness of the grinding rings on the lower pressing plate 6 and the grinding rings on the upper pressing plate 8 are reduced from the outside to the inside, so that the force on the graphite located on the outer periphery of the lower pressing plate 6 is the largest, and the block diameter of the graphite is quickly reduced. The lower pressing plate 6 and the upper pressing plate 8 are both hard plates with uniformly distributed through holes, and the aperture of the through hole of the lower pressing plate 6 is smaller than the aperture of the through hole of the upper pressing plate 8. The through hole on the upper pressing plate 8 is used to allow graphite of qualified size to pass through, and the outlet of the feed hopper 2 in the tank body 1 is located on the lower pressing plate 6 and the upper pressure plate 8, three first driving members 9 uniformly distributed in the circumferential direction are fixedly connected to the upper part of the outer side of the tank body 1, and the first driving member 9 is a hydraulic push rod. The telescopic ends of the three first driving members 9 are fixedly connected to the slide cylinder 7. The slide cylinder 7 is equipped with a vibration element 10. The vibration provided by the vibration element 10 makes the graphite move from the outer periphery on the lower pressure plate 6 to the inner periphery thereon. The middle and lower part of the outer side of the tank body 1 is fixedly connected to the second driving member 11 through a bracket. The second driving member 11 is a driving motor. The output shaft of the second driving member 11 is fixedly connected to a rotating rod. The pipeline 5 is fixedly connected to a sleeve 12 located below the lower pressure plate 6. The sleeve 12 is rotatably connected to the lower pressure plate 6. The sleeve 12 is rotatably connected to the second driving member 11. The rotating rod of the output shaft is rotatably connected, and a transmission member is arranged between the rotating rod of the output shaft of the second driving member 11 and the lower pressure plate 6. The transmission member is composed of two bevel gears meshing with each other. The transmission member is located inside the casing 12. A filter member 131 is arranged on the upper side of the tank body 1. The filter member 131 allows air to flow freely and blocks graphite particles in the tank body 1. The filter member 131 is connected to an exhaust fan through a connecting pipe. By starting the exhaust fan, qualified graphite particles can be adsorbed to the filter member 131. The filter member 131 is located above the pipeline 5, and the axis of the filter member 131 coincides with the axis of the pipeline 5. A scraping mechanism for cleaning the filter member 131 is arranged on the upper side of the tank body 1.

[0031] Combination Figure 2 and Figure 7-Figure 9As shown, the scraping mechanism includes a third driving member 13, which is fixedly connected to the upper side of the tank body 1. The third driving member 13 is an electric push rod. The telescopic end of the third driving member 13 is fixedly connected to the connecting pipe on the filter element 131 through a bracket. A fixing sleeve 14 is fixedly connected to the upper side of the tank body 1. A scraper ring 15 located in the tank body 1 is slidably connected to the lower side of the fixing sleeve 14. The scraper ring 15 is in contact and cooperate with the filter element 131. During the movement of the filter element 131, the scraper ring 15 contacts and scrapes off the graphite particles attached to the surface of the filter element 131. The middle part of the upper side of the scraper ring 15 is recessed downward for guiding and collecting materials. When there are too many graphite particles attached to the outer surface of the filter element 131, they will fall into the recess of the scraper ring 15. An unlocking component for releasing the fixation of the scraper ring 15 is provided on the lower side of the fixing sleeve 14.

[0032] Combination Figure 8 and Fig. 9As shown, the unlocking assembly includes a circumferentially evenly distributed rotating hook 16, the rotating hook 16 is L-shaped, and the rotating hook 16 is composed of a horizontal plate on the upper side and a vertical folding plate on the lower side. The circumferentially evenly distributed rotating hooks 16 are all rotatably connected to the lower side of the fixed sleeve 14, and the scraper ring 15 is in contact with the pipeline 5. The fixed sleeve 14 is provided with three circumferentially distributed first elastic sheets 17. The rotating hook 16 is squeezed and matched with the adjacent first elastic sheets 17. When the rotating hook 16 rotates and squeezes the adjacent first elastic sheets 17, the first elastic sheets 17 are compressed and stored to provide the adjacent rotating hook 16 with the force required for resetting. The scraper ring 15 is in contact with the pipeline 5. The fixed sleeve 14 is provided with three circumferentially distributed first elastic sheets 17. The rotating hook 16 is squeezed and matched with the adjacent first elastic sheets 17. When the rotating hook 16 rotates and squeezes the adjacent first elastic sheets 17, the first elastic sheets 17 are compressed and stored to provide the adjacent rotating hook 16 with the force required for resetting. The upper side of the scraper ring 15 is rotatably connected with three circumferentially evenly distributed stoppers 18, and the stoppers 18 are matched with adjacent rotating hooks 16. In the initial state, the rotating hooks 16 hook the adjacent stoppers 18, and the three stoppers 18 are fixed by the three rotating hooks 16, so that the scraper ring 15 is initially in a stationary state. The scraper ring 15 is provided with second elastic sheets 19 evenly distributed in the circumference, and the stoppers 18 are pressed and matched with the adjacent second elastic sheets 19. When the stoppers 18 rotate and squeeze the adjacent second elastic sheets 19, the second elastic sheets 19 are compressed and stored to provide the adjacent stoppers 18 with a force. The force required for resetting is that an extrusion ring 132 is fixedly connected to the upper side of the filter element 131, and the three rotating hooks 16 are all extruded and matched with the extrusion ring 132. When the extrusion ring 132 contacts the horizontal plate of the rotating hook 16 during the movement, the rotating hook 16 is forced to rotate, and the middle part of the filter element 131 is in an hourglass shape. The inner diameter of the scraper ring 15 is larger than the diameter of the hourglass-shaped part of the filter element 131, so that when the scraper ring 15 is located at the hourglass-shaped part of the filter element 131, the graphite particles on the scraper ring 15 can move downward, and the diameter of the lower part of the filter element 131 is larger than the inner diameter of the scraper ring 15, which is used for the filter element 131 to move upward. When moving, the scraper ring 15 is driven upward, and the inner diameter of the scraper ring 15 is the same as the diameter of other positions of the filter element 131, so as to scrape off the graphite particles attached to the filter element 131. The sum of the distance between the hourglass-shaped part of the fixed sleeve 14 and the scraper ring 15 in the vertical direction and the downward movement of the scraper ring 15 is equal to the contraction amount of the third driving member 13. When the third driving member 13 is fully contracted, the scraper ring 15 contacts the pipe 5, and the hourglass-shaped part of the filter element 131 is located on the inner side of the scraper ring 15, so that the graphite particles on the scraper ring 15 can continue to fall, so as to ensure the smooth progress of the collection process.

[0033] When using the device to crush and grind graphite, the user adds graphite blocks to the lower pressure plate 6 in the tank body 1 through the feed hopper 2, and starts the second driving member 11 and the three first driving members 9 at the same time. The output shaft of the second driving member 11 drives the upper rotating rod to rotate, and the output shaft rotating rod of the second driving member 11 drives the lower pressure plate 6 to rotate through the transmission member, so that the graphite blocks in the feed hopper 2 fall evenly on the upper side of the lower pressure plate 6. The telescopic ends of the three first driving members 9 jointly drive the upper pressure plate 8 to reciprocate up and down along the tank body 1, and then the vibration element 10 is started, and the lower The rotation of the pressing plate 6 and the up and down reciprocating movement of the upper pressing plate 8 cause circumferential friction and up and down extrusion and crushing of the graphite block, so that the graphite block is gradually broken into graphite particles. The vibration element 10 causes the entire device to vibrate, and the graphite on the lower pressing plate 6 is vibrated and gradually moves toward the middle thereof. Because the height and thickness of the extrusion blocks on the lower pressing plate 6 and the extrusion blocks on the upper pressing plate 8 decrease successively from the outside to the inside, the grinding intensity of the graphite by the lower pressing plate 6 and the upper pressing plate 8 gradually increases from the outside to the inside, so that the particle size of the graphite block on the lower pressing plate 6 gradually decreases from the outside to the inside.

[0034] When starting the second driving member 11, the user simultaneously starts the exhaust fan connected to the filter element 131 to extract the air inside the tank body 1, and the outside air enters the tank body 1 through the through holes on the lower side of the tank body 1. The filter on the through holes of the tank body 1 filters the impurities in the outside air to prevent the impurities from affecting the quality of the finished product. In this way, an upward airflow is formed in the tank body 1. After passing through the lower pressure plate 6, the airflow drives the graphite particles with qualified particle size thereon to move upward, and continues to move upward through the through holes on the upper pressure plate 8 until the qualified graphite particles adhere to the outside of the filter element 131, and the qualified ground graphite is taken away from the grinding area in time to reduce the waste of graphite raw materials and improve the yield of finished products.

[0035] As the number of graphite particles attached to the outside of the filter element 131 increases, the adsorption area of ​​the filter element 131 decreases gradually, and the graphite particles moved to the filter element 131 gradually fall into the depression of the scraper ring 15. After the filter element 131 has been adsorbed for a specified time, the user turns off the exhaust fan connected to the filter element 131 and starts the third driving member 13. The telescopic end of the third driving member 13 contracts and drives the filter element 131 and the extrusion ring 132 to move downward together through the bracket and the connecting pipe. During the downward movement of the filter element 131, the scraper ring 15 exerts pressure on the filter element 131. The graphite particles attached to the lower side of the hourglass-shaped part 31 are scraped off, so that the graphite particles attached to the lower side of the hourglass-shaped part of the filter element 131 all fall into the recessed part of the scraper ring 15. When the filter element 131 moves to the point where its hourglass-shaped part is located at the scraper ring 15, the graphite particles on the scraper ring 15 lose the limitation of the filter element 131 and fall downward into the pipe 5, and finally fall into the material receiving tank 3. Then, the telescopic end of the third driving member 13 continues to contract, and the hourglass-shaped part of the filter element 131 gradually moves away from the scraper ring 15, and the scraper ring 15 continues to scrape the upper part of the outer side of the filter element 131.

[0036] As the filter element 131 continues to move downward, the filter element 131 drives the extrusion ring 132 to gradually contact and squeeze the three cross plates of the rotating hooks 16. The rotating hooks 16 are squeezed by the extrusion ring 132 and rotate and squeeze the adjacent first elastic sheet 17. The rotating hooks 16 lose the limit of the adjacent limiting members 18. When the three limiting members 18 all lose the limit of the adjacent rotating hooks 16, the scraper ring 15 loses its fixation and slides downward along the fixing sleeve 14 until the scraper ring 15 contacts the pipe 5. The rotating hooks 16 are reset due to the elastic force of the adjacent first elastic sheet 17. In this process, the filter element 131 continues to move downward until the third driving member 13 shrinks to the limit position. At this time, the hourglass-shaped position of the filter element 131 The middle part is just located in the middle part of the scraper ring 15, and the graphite particles on the scraper ring 15 fall into the receiving tank 3 through the pipe 5 again. When the graphite particles on the scraper ring 15 completely fall into the pipe 5, the telescopic end of the third driving member 13 extends and drives the filter element 131 and the extrusion ring 132 to move upward through the bracket and the connecting pipe. In the process of the extrusion ring 132 moving upward, the extrusion ring 132 squeezes the cross plates of the three rotating hooks 16, and the rotating hook 16 rotates in the opposite direction until the extrusion ring 132 completely passes through the cross plates of the three rotating hooks 16, and the rotating hook 16 rotates to reset. When the filter element 131 moves to its lower part and contacts with the scraper ring 15, the filter element 131 drives the scraper ring 15 to move upward together.

[0037] In the process of the scraper ring 15 moving upward, the scraper ring 15 drives the three limit members 18 and the three second elastic sheets 19 to move upward together. When the scraper ring 15 moves upward until the limit member 18 contacts the adjacent rotating hook 16, the limit member 18 and the adjacent rotating hook 16 squeeze each other and rotate. The rotating hook 16 and the limit member 18 squeeze the adjacent first elastic sheet 17 and the adjacent second elastic sheet 19 respectively. As the limit member 18 continues to move upward, the first elastic sheet 17 and the second elastic sheet 19 are reset and drive the adjacent rotating hook 16 to rotate. 6 and the adjacent limiting member 18 rotate, the limiting member 18 and the adjacent rotating hook 16 are limited and matched again, at this time, the position of the scraper ring 15 is fixed again, at this time, the third driving member 13 is closed and the exhaust fan is started, the scraper ring 15 and the filter element 131 stop moving, and then the above-mentioned scraping steps are repeated until the graphite is completely ground. The user turns off the vibrating element 10, the second driving member 11, the exhaust fan and the three first driving members 9, and then collects the graphite particles in the collecting tank 3 and cleans the device for the next use.

[0038] Embodiment 2: Based on Embodiment 1, Figure 2 , Figure 3 , Figure 5 , Figure 6 and Fig.11As shown, it also includes a rotating blade fan 20, which is rotatably connected to the lower side of the casing 12, and the rotating blade fan 20 is slidably connected to the pipeline 5. An accelerator 21 is installed in the casing 12, and the accelerator 21 is used to increase the rotation speed of the rotating blade fan 20. The rotating rod of the output shaft of the second driving member 11 is connected to the input end of the accelerator 21. A transmission member is arranged between the output ends of the rotating blade fan 20 and the accelerator 21. The transmission member is located in the casing 12, and the transmission member is composed of two bevel gears meshing with each other. The support frame 4 is provided with through grooves evenly distributed in the circumferential direction, and the through grooves of the support frame 4 are isosceles triangles. The support frame 4 is truncated cone-shaped, and the diameter of the upper side of the support frame 4 is smaller than the diameter of the lower side thereof, and the support The width of the through groove of the support frame 4 gradually increases from the axial periphery thereof, so that the air flow speed at the lower part of the through groove is greater than that at the upper side of the through groove. The rotation of the rotating blade fan 20 pushes the air to move upward, so that a negative pressure is formed at the lower side, and then the air at the upper side of the tank body 1 is extracted by the pipe 5 to form an air circulation. A filter screen 22 located in the support frame 4 is fixedly connected between the collecting tank 3 and the pipe 5. The filter screen 22 is used to block graphite particles and prevent them from moving to the lower side of the tank body 1 and making collection difficult. The filter screen 22 is truncated cone-shaped, and the diameter of the upper side of the filter screen 22 is smaller than the diameter of the lower side. Under the action of the shape and distribution of the through groove on the support frame 4, the amount of graphite particles attached thereto is reduced.

[0039] When collecting qualified graphite particles, in order to improve the collection efficiency, the present invention forms air circulation in the tank body 1, so that some graphite particles of qualified size are naturally affected by the air and enter the collecting tank 3, thereby further reducing the time of the grinding and collection process.

[0040] When the output shaft of the second driving member 11 drives its rotating rod to rotate, the rotating rod of the output shaft of the second driving member 11 drives the rotating blade fan 20 to rotate through the acceleration of the accelerator 21 and the transmission of the transmission member. The rotating blade fan 20 rotates to push the air on the lower side of the tank body 1 from bottom to top, accelerates the qualified graphite particles to pass through the upper pressure plate 8, and makes the pressure in the middle of the lower side of the tank body 1 less than other positions in the tank body 1, so that the air on the upper side of the tank body 1 flows downward from the pipeline 5 and flows to the lower side of the tank body 1 through the filter screen 22 and the circumferentially evenly distributed through grooves on the support frame 4, forming a circulation of air in the tank body 1. Through the flow of air in the circulation process, some qualified graphite particles directly enter the pipeline 5, the graphite particles collection process is accelerated, and when passing through the filter 22 and the support frame 4, the graphite particles are affected by the air flow and deviate toward the direction of the filter 22. Since the support frame 4 is a truncated cone with a thin top and a thick bottom and the through grooves on it gradually increase from top to bottom, the air flow rate at the lower part of the through grooves of the support frame 4 is large, and the graphite particles are greatly deviated near the lower part of the support frame 4. At this time, the setting of the filter 22 with a thin top and a thick bottom allows the graphite particles to have a larger deflection space, reduces the amount of graphite particles attached to the filter 22, ensures the smooth progress of the air circulation process, and avoids waste caused by too many graphite particles attached to the filter 22.

[0041] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the spirit of the present invention.

Claims

1. A graphite negative electrode material grinding and collecting device, characterized in that: The invention comprises a tank body (1), wherein a through hole with a filter screen is arranged on the lower side of the tank body (1), a feed hopper (2) is installed on the tank body (1), a material receiving tank (3) is installed on the lower part of the tank body (1), the material receiving tank (3) is fixedly connected to and communicated with a support frame (4) located in the tank body (1), the support frame (4) is fixedly connected to and communicated with a pipeline (5), the tank body (1) is rotatably connected to a lower pressure plate (6) rotatably connected to the pipeline (5), the tank body (1) is slidably connected to a slide cylinder (7) above the lower pressure plate (6), an upper pressure plate (8) is fixedly connected to the lower side of the slide cylinder (7), the outlet of the feed hopper (2) is located between the lower pressure plate (6) and the upper pressure plate (8), the outer side of the tank body (1) is fixedly connected to A first driving member (9) is fixedly connected to the slide cylinder (7), the slide cylinder (7) is provided with a vibration element (10), a second driving member (11) is fixedly connected to the outside of the tank body (1) via a bracket, the pipeline (5) is fixedly connected to a casing (12) rotatably connected to the lower pressure plate (6), an output shaft of the second driving member (11) is rotatably connected to the casing (12) via a rotating rod, a transmission member located in the casing (12) is provided between the rotating rod on the output shaft of the second driving member (11) and the lower pressure plate (6), the tank body (1) is provided with a filter element (131), the filter element (131) is externally connected to an exhaust fan via a connecting pipe, and a scraping mechanism for cleaning the filter element (131) is provided on the upper side of the tank body (1); The scraping mechanism comprises a third driving member (13), the third driving member (13) being fixedly connected to the upper side of the tank body (1), the telescopic end of the third driving member (13) being fixedly connected to the connecting pipe on the filter element (131) via a bracket, a fixing sleeve (14) being fixedly connected through the upper side of the tank body (1), the fixing sleeve (14) being slidably connected to a scraping ring (15) located in the tank body (1), the scraping ring (15) being in contact with and cooperating with the filter element (131), and an unlocking component for releasing the fixation of the scraping ring (15) being provided on a side of the fixing sleeve (14) close to the scraping ring (15); The unlocking assembly comprises circumferentially evenly distributed rotating hooks (16), the circumferentially evenly distributed rotating hooks (16) are all rotatably connected to a side of the fixed sleeve (14) close to the scraper ring (15), the scraper ring (15) is in contact with the pipe (5), the fixed sleeve (14) is provided with circumferentially distributed first elastic sheets (17), the rotatable hooks (16) are pressed and matched with the adjacent first elastic sheets (17), and the scraper ring (15) is rotatably connected to a side of the fixed sleeve (14) close to the scraper ring (15). A circumferentially evenly distributed limiting member (18) is connected, the limiting member (18) is in limiting cooperation with the adjacent rotating hook (16), the scraper ring (15) is provided with a circumferentially evenly distributed second elastic sheet (19), the limiting member (18) is extruded and cooperated with the adjacent second elastic sheet (19), the filter element (131) is fixedly connected to a side away from the scraper ring (15) with an extrusion ring (132), and the circumferentially evenly distributed rotating hooks (16) are all extruded and cooperated with the extrusion ring (132).

2. A graphite negative electrode material grinding and collecting device according to claim 1, characterized in that: The lower pressing plate (6) and the upper pressing plate (8) are fixedly connected to the opposite sides thereof with uniformly distributed grinding rings, the grinding rings on the lower pressing plate (6) and the grinding rings on the upper pressing plate (8) are staggered, and the height and thickness of the grinding rings on the lower pressing plate (6) and the grinding rings on the upper pressing plate (8) decrease from the outside to the inside.

3. The graphite negative electrode material grinding and collecting device according to claim 1, characterized in that: The middle portion of the upper side of the scraper ring (15) is recessed downwards and is used to guide and collect materials.

4. The graphite negative electrode material grinding and collecting device according to claim 1, characterized in that: The middle portion of the filter element (131) is in an hourglass shape, the inner diameter of the scraper ring (15) is larger than the diameter of the filter element (131) at the hourglass shape, the outer diameter of the lower portion of the filter element (131) is larger than the inner diameter of the scraper ring (15), and the inner diameter of the scraper ring (15) is the same as the diameter of other positions of the filter element (131).

5. A graphite negative electrode material grinding and collecting device according to claim 4, characterized in that: The sum of the distance between the hourglass-shaped portion of the fixed sleeve (14) and the scraper ring (15) in the vertical direction and the downward displacement of the scraper ring (15) is equal to the contraction amount of the third driving member (13), so as to ensure the smooth progress of the collection process.

6. The graphite negative electrode material grinding and collecting device according to claim 1, characterized in that: The invention also comprises a rotating blade fan (20), wherein the rotating blade fan (20) is rotatably connected to the lower side of the casing (12), the rotating blade fan (20) is rotatably connected to the pipeline (5), an accelerator (21) is installed in the casing (12), a rotating rod of the output shaft of the second driving member (11) is connected to the input end of the accelerator (21), a transmission member is arranged between the rotating blade fan (20) and the output end of the accelerator (21), the support frame (4) is provided with circumferentially evenly distributed through grooves, and a filter screen (22) located in the support frame (4) is fixedly connected between the material receiving tank (3) and the pipeline (5).

7. A graphite negative electrode material grinding and collecting device according to claim 6, characterized in that: The support frame (4) is in the shape of a truncated cone, the diameter of the upper side of the support frame (4) is smaller than the diameter of the lower side thereof, the through groove of the support frame (4) is in the shape of an isosceles triangle, and the width of the through groove of the support frame (4) gradually increases from the central axis to the outer periphery, so as to guide the flow of gas.

8. The graphite negative electrode material grinding and collecting device according to claim 6, characterized in that: The filter screen (22) is in the shape of a truncated cone, and the diameter of the upper side of the filter screen (22) is smaller than the diameter of the lower side thereof, so as to reduce the adhesion of materials.

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