A pulverizing device for a lithium battery negative electrode material

Abstract

This invention discloses a pulverizing device for lithium battery anode materials, belonging to the technical field of pulverizing devices. It includes a machine body with a feeding trough at its top and a discharge pipe fixedly connected to one side of its bottom. A grinding chamber is fixedly connected to the top of the inner wall of the machine body, and a grinding roller is fixedly connected to the outer surface of the grinding rod. A fine grinding device is installed inside the machine body, comprising a fine grinding chamber, a transfer chamber, and a trough. A first filter groove and a second filter groove are formed at the bottom of the inner wall of the grinding chamber. A slider is threadedly connected to the outer surface of the screw, and a cutting rod is rotatably connected to one side of the slider. In this design, the fine grinding device can separate large and small particles by allowing them to enter the fine grinding chamber and the transfer chamber respectively for screening. In the fine grinding chamber, the large particles are ground into smaller particles, and then the cutting rod inside the trough moves back and forth to further cut and pulverize the raw materials, improving the pulverizing effect of the pulverizing device on lithium battery anode materials.

Description

Technical Field

[0001] This invention relates to the field of mineral processing equipment technology, and more specifically, to a crushing device for lithium battery anode materials. Background Technology

[0002] The negative electrode material of lithium battery is a key component of lithium-ion battery. It plays a role in storing and releasing energy in the battery and mainly affects the initial efficiency and cycle performance of lithium battery. Natural graphite has advantages in cost and specific capacity, while artificial graphite has advantages in cycle performance, safety performance and charge / discharge rate. The production of negative electrode material requires the use of a crushing device to crush the graphite.

[0003] However, in practical applications, existing pulverizing devices sometimes fail to completely pulverize the negative electrode material, resulting in the output of both large and small particles, leading to low uniformity of the material and poor pulverizing effect.

[0004] To address this, a pulverizing device for lithium battery anode materials is proposed. Summary of the Invention

[0005] In view of the problems existing in the prior art, the purpose of this invention is to provide a pulverizing device for lithium battery anode materials.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A pulverizing device for lithium battery negative electrode materials includes a machine body. A feeding trough is provided at the top of the machine body, and a discharge pipe is fixedly connected to one side of the bottom of the machine body. A grinding chamber is fixedly connected to the top of the inner wall of the machine body. Two grinding rods are rotatably connected to both ends of the inner wall of the grinding chamber. Gears are fixedly connected to the outer surfaces of the two grinding rods, and the gears on the outer surfaces of the two grinding rods mesh with each other. Grinding rollers are fixedly connected to the outer surfaces of the grinding rods. A first motor is provided on one side of the inner wall of the machine body. The output end of the first motor is fixedly connected to one end of a grinding rod. A fine grinding device is provided inside the machine body below the grinding chamber.

[0008] Furthermore, the fine grinding device includes a fine grinding chamber, a transfer chamber, and a trough. A first drop groove is formed at the bottom of the inner wall of the fine grinding chamber, and a fine filter screen is provided on the inner wall of the first drop groove. A second drop groove is formed at the bottom of the inner wall of the transfer chamber. The tops of the fine grinding chamber and the transfer chamber are fixedly connected to the bottom of the grinding chamber. A first filter groove and a second filter groove are formed at the bottom of the inner wall of the grinding chamber. A fine filter screen and a coarse filter screen are respectively provided at the top of the first filter groove and the top of the second filter groove. The first filter groove communicates with the top of the inner wall of the transfer chamber, and the second filter groove communicates with the top of the inner wall of the fine grinding chamber. A first shaft is rotatably connected to both ends of the inner wall of the fine grinding chamber, and a rolling roller is rotatably connected to the outer surface of the first shaft. Two bent rods are fixedly connected to the outer surface of the first shaft. Two extrusion rollers are rotatably connected to the sides of the two bent rods that are close to each other. Gears are fixedly connected to both ends of the two extrusion rollers, and the gears at both ends of the two extrusion rollers mesh with each other. A rotating wheel is fixedly connected to both ends of one of the extrusion rollers. The outer surface of the rotating wheel moves along the inner wall of the fine grinding chamber. A second motor is provided on one side of the inner wall of the machine body. The output end of the second motor is fixedly connected to one end of the first shaft. A second shaft is rotatably connected to both ends of the inner wall of the intermediate chamber. Two conical augers are fixedly connected to the outer surface of the second shaft. The smaller radii of the two conical augers face the same direction. The outer surfaces of the first shaft and the second shaft... One end of each container is fixedly connected to a grooved wheel, and a belt is fitted onto the outer surface of the grooved wheel. The bottom ends of the fine grinding chamber and the transfer chamber are fixedly connected to the top end of the trough. The top end of the trough has a first receiving groove and a second receiving groove, the first receiving groove communicating with a first falling groove, and the second receiving groove communicating with a second falling groove. A grooved plate is fixedly connected to the inner wall of the trough, and the outer surface of the grooved plate has several rectangular holes. Screws are rotatably connected to both ends of the inner wall of the trough, and sliders are threaded onto the outer surface of the screws. A cutting rod is rotatably connected to one side of the slider, and several cutting blades are provided on the outer surface of the cutting rod. One end of the cutting rod rotates on one side of the inner wall of the trough, and a sliding groove is provided on one side of the inner wall of the trough. The sliding rod slides on the inner wall of the groove at the end away from the slider. One end of the screw is fixedly connected to a worm gear. The end of the first shaft near the groove wheel is fixedly connected to a round rod. A cylindrical block is rotatably connected to the outer surface of the fine grinding chamber near the round rod. Two curved grooves are formed on the outer surface of the cylindrical block. The middle ends of the two curved grooves are staggered and the two curved grooves form an X shape on the outer surface of the cylindrical block. A first bevel gear is fixedly connected to one end of the cylindrical block. A worm is rotatably connected to the bottom side of the inner wall of the machine body. The outer surface of the worm meshes with the outer surface of the worm wheel. A second bevel gear is fixedly connected to the top of the worm. The outer surface of the second bevel gear meshes with the outer surface of the first bevel gear.

[0009] Furthermore, grooved plates are fixedly connected to both ends of the cylindrical block, and grooves are provided on both sides of the grooved plates. Two arc-shaped rods are fixedly connected to one end of the first shaft near the cylindrical rod.

[0010] Furthermore, a third bevel gear is fixedly connected to the end of the cylindrical block away from the first bevel gear, and a fourth bevel gear is rotatably connected to the inner wall of the machine body near the third bevel gear. The outer surface of the fourth bevel gear meshes with the outer surface of the third bevel gear. A spur gear is fixedly connected to one end of the fourth bevel gear, and a toothed rod is slidably connected to one end of the inner wall of the slot box. One side of the toothed rod meshes with the outer surface of the spur gear, and a push plate is fixedly connected to one end of the toothed rod. The outer surface of the push plate slides on the inner wall of the slot box.

[0011] Furthermore, an auxiliary plate is fixedly connected to the side of the push plate away from the toothed rod, and the edge of the auxiliary plate away from the push plate is inclined.

[0012] Furthermore, a positioning cylinder is fixedly connected to one side of the slider, and the end of the cutting rod near the slider rotates on the inner wall of the positioning cylinder.

[0013] Furthermore, one side of the inner wall of the slot is inclined, and the bottom end of the slider slides on the inclined side of the inner wall of the slot.

[0014] Furthermore, the top two sides of the inner wall of the rectangular hole are beveled, and the width of the top of the inner wall of the rectangular hole is greater than that of the middle and bottom of the inner wall of the rectangular hole.

[0015] Furthermore, a bending plate is fixedly connected to one side of the two bent rods that are close to each other, and the outer surface of the bending plate is L-shaped.

[0016] Furthermore, a protruding strip is fixedly connected to the outer surface of the wheel, and the protruding strip is a rubber strip made of rubber material.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] (1) This solution sets up a fine grinding device, which allows the large and small particles output from the grinding chamber to enter the fine grinding chamber and the transfer chamber respectively to screen the large and small particles. The large particles are ground into small particles in the fine grinding chamber, and the raw materials are further cut and crushed by the cutting rod inside the tank moving back and forth, thereby improving the crushing effect of the crushing device on the lithium battery negative electrode raw materials.

[0019] (2) This solution uses two conical augers on the outer surface of the second shaft to rotate and squeeze and push the raw materials inside the transfer chamber, so that the raw materials can pass through the second drop trough and the second receiving trough more quickly and enter the inside of the trough box, thereby improving the material output rate.

[0020] (3) This solution can also push the negative electrode material inside the tank towards the discharge pipe according to the movement of the push plate, thereby increasing the output rate of the raw material through the discharge pipe and avoiding the accumulation and blockage of the raw material at the connection between the tank and the discharge pipe as much as possible. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of a partial cross-sectional structure of the body in this invention;

[0023] Figure 3 This is a schematic diagram of a partial cross-sectional structure of the body in this invention;

[0024] Figure 4 This is a schematic diagram of a partial cross-sectional structure of the body in this invention;

[0025] Figure 5 This is a schematic diagram of a partial cross-sectional structure of the body in this invention;

[0026] Figure 6 This is a schematic diagram of a partial cross-sectional structure of the body in this invention;

[0027] Figure 7 This is a schematic diagram of the structure of the transit warehouse in this invention;

[0028] Figure 8 This is a partial cross-sectional structural diagram of the fine grinding chamber in this invention;

[0029] Figure 9 This is a schematic diagram of the structure of the slot box in this invention;

[0030] Figure 10 This is a partial cross-sectional structural diagram of the slot box in this invention;

[0031] Figure 11 This is a partial cross-sectional structural diagram of the slot box in this invention;

[0032] Figure 12 This is a schematic diagram of the structure at the first shaft in this invention;

[0033] Figure 13 This is a schematic diagram of the cylindrical block in this invention.

[0034] Explanation of the labels in the diagram:

[0035] 1. Machine body; 2. Fine grinding device; 3. Feed trough; 4. Discharge pipe; 5. Grinding chamber; 6. Grinding rod; 7. Grinding roller; 8. First motor; 21. First filter tank; 22. Second filter tank; 23. Fine grinding chamber; 24. Transfer chamber; 25. First shaft; 26. Roller; 27. Bending rod; 28. Rotary wheel; 29. ​​Extrusion roller; 210. First drop trough; 211. Grooved wheel; 212. Second shaft; 213. Second motor; 214. Belt; 215. Conical auger; 216. Second drop trough; 217. Tank box; 218. First receiving tank; 219. Second... 220. Receiving slot; 221. Slot plate; 222. Rectangular hole; 222. Screw; 223. Slider; 224. Cutting rod; 225. Slide groove; 226. Worm gear; 227. Round rod; 228. Cylindrical block; 229. Bending groove; 230. First bevel gear; 231. Second bevel gear; 232. Worm; 233. Groove plate; 234. Groove; 235. Arc rod; 236. Third bevel gear; 237. Fourth bevel gear; 238. Flat gear; 239. Gear rack; 240. Push plate; 241. Auxiliary plate; 242. Positioning cylinder; 243. Bending plate; 244. Protrusion. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0037] Please see Figure 1-3A pulverizing device for lithium battery negative electrode materials includes a body 1, a feeding trough 3 at the top of the body 1, a discharge pipe 4 fixedly connected to one side of the bottom of the body 1, a grinding chamber 5 fixedly connected to the top of the inner wall of the body 1, two grinding rods 6 rotatably connected to both ends of the inner wall of the grinding chamber 5, gears fixedly connected to the outer surfaces of the two grinding rods 6 respectively, the gears on the outer surfaces of the two grinding rods 6 meshing with each other, grinding rollers 7 fixedly connected to the outer surfaces of the grinding rods 6, a first motor 8 provided on one side of the inner wall of the body 1, the output end of the first motor 8 fixedly connected to one end of one grinding rod 6, and the grinding chamber 5 located inside the body 1. A fine grinding device 2 is installed below. When the crushing device is used to crush the lithium battery negative electrode material, the receiving pipe of the material conveying pump is first connected to one end of the discharge pipe 4. Then the raw material is added into the machine body 1 through the feed trough 3 at the top of the machine body 1. The first motor 8 is controlled by the control console on one side of the machine body 1. The output end of the first motor 8 drives one grinding rod 6 to rotate. The gear on the outer surface of the grinding rod 6 drives another grinding rod 6 to rotate, so that the two grinding rollers 7 inside the grinding chamber 5 rotate in the same direction to crush and grind the raw material. The crushed material is output through the discharge pipe 4.

[0038] See Figure 1-13The fine grinding device 2 includes a fine grinding chamber 23, a transfer chamber 24, and a trough 217. A first drop groove 210 is formed at the bottom of the inner wall of the fine grinding chamber 23, and a fine filter screen is installed on the inner wall of the first drop groove 210. A second drop groove 216 is formed at the bottom of the inner wall of the transfer chamber 24. The tops of the fine grinding chamber 23 and the transfer chamber 24 are fixedly connected to the bottom of the grinding chamber 5. A first filter groove 21 and a second filter groove 22 are formed at the bottom of the inner wall of the grinding chamber 5. A fine filter screen and a coarse filter screen are respectively installed at the top of the first filter groove 21 and the second filter groove 22. The first filter groove 21 communicates with the top of the inner wall of the transfer chamber 24, and the second filter groove 22 communicates with the top of the inner wall of the fine grinding chamber 23. A first shaft 25 is rotatably connected to both ends of the inner wall of the fine grinding chamber 23. A rolling roller 26 is rotatably connected to the outer surface of the first shaft 25. Two bent rods 27 are fixedly connected to the outer surface of the first shaft 25. Two extrusion rollers 29 are rotatably connected to the side of the two bent rods 27 that are close to each other. Gears are fixedly connected to both ends of the two extrusion rollers 29, and the gears at both ends of the two extrusion rollers 29 mesh with each other. A rotating wheel 28 is fixedly connected to both ends of one extrusion roller 29. The outer surface of the rotating wheel 28 moves on the inner wall of the fine grinding chamber 23. A second motor 213 is provided on one side of the inner wall of the machine body 1. The output end of the second motor 213 is fixedly connected to one end of the first shaft 25. A second shaft 212 is rotatably connected to both ends of the inner wall of the intermediate transfer chamber 24. Two conical augers 215 are fixedly connected to the outer surface of the second shaft 212. The smaller radius ends face the same direction. Grooved wheels 211 are fixedly connected to one end of the outer surface of the first shaft 25 and the second shaft 212, respectively. A belt 214 is fitted onto the outer surface of the grooved wheel 211. The bottom ends of the fine grinding chamber 23 and the transfer chamber 24 are fixedly connected to the top end of the slot box 217. The top end of the slot box 217 has a first receiving slot 218 and a second receiving slot 219. The first receiving slot 218 communicates with the first falling slot 210, and the second receiving slot 219 communicates with the second falling slot 216. A slot plate 220 is fixedly connected to the inner wall of the slot box 217. Several rectangular holes 221 are opened on the outer surface of the slot plate 220. Screws 222 are rotatably connected to both ends of the inner wall of the slot box 217. A slider 223 is threaded onto the outer surface of the screw 222. A slitting rod 224 is rotatably connected to one side of block 223. Several cutting blades are provided on the outer surface of the slitting rod 224. One end of the slitting rod 224 rotates on one side of the inner wall of the slot box 217. A sliding groove 225 is provided on one side of the inner wall of the slot box 217. The end of the slitting rod 224 away from the slider 223 slides on the inner wall of the sliding groove 225. A worm gear 226 is fixedly connected to one end of the screw 222. A round rod 227 is fixedly connected to the end of the first shaft 25 near the grooved wheel 211. A cylindrical block 228 is rotatably connected to the outer surface of the fine grinding chamber 23 near the round rod 227. Two curved grooves 229 are provided on the outer surface of the cylindrical block 228. The middle ends of the two curved grooves 229 intersect each other, forming an X-shape on the outer surface of the cylindrical block 228.One end of the cylindrical block 228 is fixedly connected to a first bevel gear 230. A worm gear 232 is rotatably connected to one side of the bottom of the inner wall of the machine body 1. The outer surface of the worm gear 232 meshes with the outer surface of the worm wheel 226. The top end of the worm gear 232 is fixedly connected to a second bevel gear 231. The outer surface of the second bevel gear 231 meshes with the outer surface of the first bevel gear 230. By setting up a fine grinding chamber 23 and a transfer chamber 24, after the raw material is ground by the grinding roller 7 inside the grinding chamber 5, large particles and small particles will enter the interior of the fine grinding chamber 23 and the transfer chamber 24 through the coarse filter screen at the top of the inner wall of the second filter tank 22 and the fine filter screen at the top of the inner wall of the first filter tank 21, respectively. The second motor 213 operating on the outer surface of the fine grinding chamber 23 drives the first shaft 25 to rotate. The first shaft 25 drives the roller 26 to move and rotate inside the fine grinding chamber 23, further crushing and pulverizing the large particles of raw material entering the fine grinding chamber 23. When the first shaft 25 rotates, the rollers 28 on both sides of the squeeze roller 29 at one end of the bent rod 27 move on the inner wall of the fine grinding chamber 23. The rollers 28 drive one squeeze roller 29 to rotate, and the gears at both ends of the squeeze roller 29 cause the two squeeze rollers 29 to rotate in the same direction, further crushing and pulverizing the raw material entering between the squeeze rollers 29. After the large particles inside the fine grinding chamber 23 are ground into small particles, they pass through the fine filter screen on the inner wall of the first drop trough 210 and then through the first receiving trough 218 at the top of the trough 217 into the trough 217. At the same time, when the first shaft 25 rotates, it drives the grooved roller 26 at one end to rotate. The first shaft 25 rotates, driving the grooved wheel 211 at one end of the second shaft 212 and the second shaft 212 to rotate via the belt 214. This causes the two conical augers 215 on the outer surface of the second shaft 212 to rotate, squeezing and pushing the raw material inside the transfer chamber 24. This allows the raw material to pass through the second drop trough 216 and the second receiving trough 219 more quickly into the interior of the trough box 217. After the raw material from the fine grinding chamber 23 and the transfer chamber 24 enters the interior of the trough box 217, some of it will enter the lower part of the trough plate 220 through the rectangular hole 221 on the outer surface of the trough plate 220, while some will remain above the trough plate 220. When the first shaft 25 rotates, it will also drive the round rod 227 at one end to rotate. When the round rod 227 rotates, one end will enter a bend on the outer surface of the lower cylindrical block 228. Inside the curved groove 229, and moving along the direction of the curved groove 229, the cylindrical block 228 rotates 180°. The rotation of the cylindrical block 228 drives the first bevel gear 230 to rotate, which in turn drives the worm gear 232 to rotate. The worm gear 232 then drives the worm wheel 226 to rotate, which in turn drives the screw 222 to rotate. This causes the slider 223 on the outer surface of the screw 222 to move. The slider 223 drives one end of the cutting rod 224 to slide and rotate on the inner wall of the groove 225. The cutting blade on the outer surface of the cutting rod 224 then performs final crushing on the raw materials located below and above the groove plate 220. Afterwards, the cylindrical rod 227 disengages from the interior of the curved groove 229.The first shaft 25 continues to rotate, and the other end of the round rod 227 enters another curved groove 229 on the outer surface of the cylindrical block 228, pushing the cylindrical block 228 to rotate 180° in the original direction. This causes the screw 222 to rotate in the opposite direction, controlling the slider 223 on the outer surface of the screw 222 to drive the cutting rod 224 to move in the other direction. The back-and-forth movement of the cutting rod 224 causes the cutting blades on the surface to crush the raw material. By setting up the fine grinding device 2, the large and small particles output from the grinding chamber 5 are respectively sent into the fine grinding chamber 23 and the transfer chamber 24 for screening. In the fine grinding chamber 23, the large particles are ground into small particles. Then, the back-and-forth movement of the cutting rod 224 inside the trough 217 further cuts and crushes the raw material, improving the crushing effect of the crushing device on the lithium battery negative electrode raw material.

[0039] See Figure 3-13 The cylindrical block 228 is fixedly connected to two ends of a groove plate 233. The groove plate 233 has grooves 234 on both sides. The first shaft 25 is fixedly connected to two arc-shaped rods 235 near the end of the round rod 227. When the first shaft 25 rotates, one end of the round rod 227 slides into the curved groove 229 on the outer surface of the cylindrical block 228 and then leaves the curved groove 229. When the first shaft 25 continues to rotate, one end of the arc-shaped rod 235 on one side of the round rod 227 slides away from the first shaft 25 on the inner wall of the groove 234 on the outer surface of the two groove plates 233 at both ends of the cylindrical block 228. This limits the angle between the cylindrical block 228 and the first shaft 25 and the body 1, and avoids the cylindrical block 228 from rotating on its own as much as possible.

[0040] See Figure 3-13A third bevel gear 236 is fixedly connected to the end of the cylindrical block 228 away from the first bevel gear 230. A fourth bevel gear 237 is rotatably connected to the inner wall of the machine body 1 near the third bevel gear 236. The outer surface of the fourth bevel gear 237 meshes with the outer surface of the third bevel gear 236. A spur gear 238 is fixedly connected to one end of the fourth bevel gear 237. A rack 239 is slidably connected to one end of the inner wall of the slot box 217. One side of the rack 239 meshes with the outer surface of the spur gear 238. A push plate 240 is fixedly connected to one end of the rack 239. The outer surface of the push plate 240 slides on the inner wall of the slot box 217. When the cylindrical block 228 rotates inward toward the inside of the machine body 1, it will drive the third bevel gear 236 to rotate inward. The third bevel gear 236 drives the spur gear 238 to rotate inward, and the spur gear 238 drives the rack 239 to push the push plate 240 to slide inward on the inner wall of the slot 217. The push plate 240 pushes the negative electrode material inside the slot 217 toward the discharge pipe 4, increasing the output rate of the raw material through the discharge pipe 4 and avoiding the accumulation and blockage of raw material at the connection between the slot 217 and the discharge pipe 4 as much as possible. When the cylindrical block 228 rotates away from the machine body 1, it drives the third bevel gear 236 to rotate outward, and the third bevel gear 236 drives the spur gear 238 to rotate outward. The spur gear 238 drives the rack 239 to pull the push plate 240 to slide back to its original position on the inner wall of the slot 217.

[0041] See Figure 3-13 An auxiliary plate 241 is fixedly connected to the side of the push plate 240 away from the toothed rod 239. The edge of the auxiliary plate 241 away from the push plate 240 is inclined. When the push plate 240 moves through the inclined side of the auxiliary plate 241 to push the material inside the slot 217, the material is less likely to accumulate and enter the contact area between the push plate 240 and the bottom of the inner wall of the slot 217, thus improving the pushing effect of the push plate 240 on the material. A positioning cylinder 242 is fixedly connected to one side of the slider 223. The end of the cutting rod 224 near the slider 223 is inside the positioning cylinder 242. The wall rotation, by setting the positioning cylinder 242, can further limit the angle between one end of the cutting rod 224 and the slider 223, and improve the stability of the cutting rod 224 when rotating. One side of the inner wall of the slot box 217 is inclined, and the bottom end of the slider 223 slides on the inclined side of the inner wall of the slot box 217. By setting one side of the inner wall of the slot box 217 to be inclined, the raw materials entering the slot box 217 from the second receiving slot 219 are not easy to accumulate on the movement path of the slider 223 on the inner wall of the slot box 217, thus blocking the movement of the slider 223.

[0042] See Figure 3-13The top two sides of the inner wall of the rectangular hole 221 are beveled, and the width of the top of the inner wall of the rectangular hole 221 is greater than the middle and bottom of the inner wall of the rectangular hole 221. By setting the top two sides of the inner wall of the rectangular hole 221 to be beveled and the width of the top of the inner wall to be greater than the middle and bottom of the inner wall of the rectangular hole 221, the raw material can more easily enter the bottom of the inner wall of the slot box 217 through the rectangular hole 221 and is less likely to accumulate on the top of the slot plate 220.

[0043] See Figure 3-13 A bending plate 243 is fixedly connected to one side of the two bending rods 27 that are close to each other. The outer surface of the bending plate 243 is L-shaped. By setting the bending plate 243, the raw material entering between the roller 26 and the bending plate 243 can be blocked, increasing the contact probability between the raw material inside the fine grinding chamber 23 and the roller 26, and further improving the crushing effect of the roller 26 on the raw material. A protruding strip 244 is fixedly connected to the outer surface of the roller 28. The protruding strip 244 is a rubber strip. By setting the rubber protruding strip 244, the friction between the outer surface of the roller 28 and the inner wall of the fine grinding chamber 23 can be increased, so that the roller 28 is less likely to be unable to rotate normally due to the obstruction of the raw material when moving on the inner wall of the fine grinding chamber 23.

[0044] Instructions for use: When using this application, first connect the receiving pipe of the material conveying pump to one end of the discharge pipe 4. Then, add the raw material into the machine body 1 through the feed trough 3 at the top of the machine body 1. Control the operation of the first motor 8 through the control console on one side of the machine body 1. The output end of the first motor 8 drives one grinding rod 6 to rotate. The gear on the outer surface of the grinding rod 6 drives the other grinding rod 6 to rotate, so that the two grinding rollers 7 inside the grinding chamber 5 rotate in the same direction to crush and grind the raw material. After the raw material is ground by the grinding rollers 7 inside the grinding chamber 5, the large particles and small particles will enter the fine grinding chamber 23 through the coarse filter screen at the top of the inner wall of the second filter tank 22 and the fine filter screen at the top of the inner wall of the first filter tank 21, respectively. Inside the transfer chamber 24, the second motor 213, operating on the outer surface of the fine grinding chamber 23, drives the first shaft 25 to rotate. The first shaft 25 then drives the rolling roller 26 to move and rotate inside the fine grinding chamber 23, further crushing and pulverizing the large particles of raw material entering the chamber. When the first shaft 25 rotates, the rotating wheels 28 on both sides of the pressing roller 29 at one end of the bent rod 27 move along the inner wall of the fine grinding chamber 23. The rotating wheels 28 drive one pressing roller 29 to rotate, and the gears at both ends of the pressing roller 29 cause both pressing rollers 29 to rotate in the same direction, further crushing and pulverizing the raw material entering between the pressing rollers 29. After being ground into smaller particles, the large particles inside the fine grinding chamber 23 pass through the fine filter screen on the inner wall of the first drop trough 210. The first receiving groove 218 at the top of the trough 217 enters the interior of the trough 217. Simultaneously, the rotation of the first shaft 25 drives the grooved wheel 211 at one end to rotate. This, via the belt 214, drives the grooved wheel 211 at one end of the second shaft 212 and the second shaft 212 to rotate, causing the two conical augers 215 on the outer surface of the second shaft 212 to rotate. This squeezes and pushes the raw material inside the transfer chamber 24, allowing it to pass more quickly through the second falling groove 216 and the second receiving groove 219 into the interior of the trough 217. After entering the trough 217, some of the raw material from the fine grinding chamber 23 and the transfer chamber 24 passes through the rectangular holes 221 on the outer surface of the trough plate 220 to the lower part of the trough plate 220, while some remains above the trough plate 220. When the first shaft 25 rotates, it also drives the round rod 227 at one end to rotate. When the round rod 227 rotates, one end enters a curved groove 229 on the outer surface of the lower cylindrical block 228 and moves along the direction of the curved groove 229, pushing the cylindrical block 228 to rotate 180°. When the cylindrical block 228 rotates, it drives the first bevel gear 230 to rotate, which in turn drives the worm gear 232 to rotate. The worm gear 232 drives the worm wheel 226 to rotate, which in turn drives the screw 222 to rotate. This causes the slider 223 on the outer surface of the screw 222 to move on the outer surface of the screw 222. The slider 223 drives one end of the cutting rod 224 to slide and rotate on the inner wall of the groove 225.The cutting blades on the outer surface of the slitting rod 224 perform final crushing on the raw materials located below and above the slot plate 220. Then, the round rod 227 disengages from the curved slot 229. The first shaft 25 continues to rotate, and the other end of the round rod 227 enters another curved slot 229 on the outer surface of the cylindrical block 228, pushing the cylindrical block 228 to rotate 180° in its original direction. This causes the screw 222 to rotate in the opposite direction, controlling the slider 223 on the outer surface of the screw 222 to move the slitting rod 224 in the other direction. The back-and-forth movement of the slitting rod 224 causes the cutting blades on its surface to crush the raw materials. Simultaneously, as the cylindrical block 228 rotates inward towards the machine body 1, it drives the third bevel gear 236 inward. The rotation of the cylindrical block 228 causes the third bevel gear 236 to rotate inward, which in turn drives the spur gear 238 to rotate inward. The spur gear 238 then drives the rack 239 to push the push plate 240 inward against the inner wall of the slot 217. The push plate 240 pushes the negative electrode material inside the slot 217 towards the discharge pipe 4. When the cylindrical block 228 rotates away from the machine body 1, it drives the third bevel gear 236 to rotate outward. The third bevel gear 236 then drives the spur gear 238 to rotate outward, which in turn drives the rack 239 to pull the push plate 240 back to its original position against the inner wall of the slot 217. Finally, the material pump outside the discharge pipe 4 extracts the raw material from inside the slot 217 through the discharge pipe 4.

[0045] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A pulverizing device for lithium battery negative electrode materials, comprising a body (1), characterized in that: The top of the machine body (1) is provided with a feeding trough (3), and a discharge pipe (4) is fixedly connected to one side of the bottom end of the machine body (1). A grinding chamber (5) is fixedly connected to the top of the inner wall of the machine body (1). Two grinding rods (6) are rotatably connected to both ends of the inner wall of the grinding chamber (5). Gears are fixedly connected to the outer surfaces of the two grinding rods (6), and the gears on the outer surfaces of the two grinding rods (6) mesh with each other. A grinding roller (7) is fixedly connected to the outer surface of the grinding rod (6). A first motor (8) is provided on one side of the inner wall of the machine body (1). The output end of the first motor (8) is fixedly connected to one end of a grinding rod (6). A fine grinding device is provided inside the machine body (1) below the grinding chamber (5). (2); The fine grinding device (2) includes a fine grinding chamber (23), a transfer chamber (24) and a trough (217). The bottom of the inner wall of the fine grinding chamber (23) is provided with a first drop groove (210), and the inner wall of the first drop groove (210) is provided with a fine filter screen. The bottom of the inner wall of the transfer chamber (24) is provided with a second drop groove (216). The tops of the fine grinding chamber (23) and the transfer chamber (24) are fixedly connected to the bottom of the grinding chamber (5). The bottom of the inner wall of the grinding chamber (5) is provided with a first filter groove (21) and a second filter groove (22). The tops of the first filter groove (21) and the second filter groove (22) are respectively provided with a fine filter screen and a coarse filter screen. The first filter groove (21) and the inner wall of the transfer chamber (24) are connected. The top of the wall is open, and the second filter tank (22) is open to the top of the inner wall of the fine grinding chamber (23). The inner wall of the fine grinding chamber (23) is rotatably connected to both ends of the first shaft (25). The outer surface of the first shaft (25) is rotatably connected to the rolling roller (26). The outer surface of the first shaft (25) is fixedly connected to two bent rods (27). The two bent rods (27) are rotatably connected to the side of each other. The two ends of the two pressing rollers (29) are respectively fixedly connected to gears. The gears at the ends of the two pressing rollers (29) mesh with each other. The two ends of one pressing roller (29) are respectively fixedly connected to a rotating wheel (28). The outer surface of the rotating wheel (28) moves on the inner wall of the fine grinding chamber (23). The machine body (1) has a second motor (213) installed on one side of its inner wall. The output end of the second motor (213) is fixedly connected to one end of the first shaft (25). The inner walls of the transfer chamber (24) are rotatably connected to the two ends of the second shaft (212). The outer surface of the second shaft (212) is fixedly connected to two conical augers (215). The smaller ends of the two conical augers (215) face the same direction. The outer surfaces of the first shaft (25) and the second shaft (212) are respectively fixedly connected to a grooved wheel (211). The outer surface of the grooved wheel (211) is fitted with a belt (214). The bottom ends of the fine grinding chamber (23) and the transfer chamber (24) are fixedly connected to the top end of the slot box (217).The top of the slot box (217) is provided with a first receiving slot (218) and a second receiving slot (219). The first receiving slot (218) is connected to the first falling slot (210), and the second receiving slot (219) is connected to the second falling slot (216). A slot plate (220) is fixedly connected to the inner wall of the slot box (217). A plurality of rectangular holes (221) are provided on the outer surface of the slot plate (220). The two ends of the inner wall of the slot box (217) are rotatably connected to... A screw (222) has a slider (223) threadedly connected to its outer surface. A cutting rod (224) is rotatably connected to one side of the slider (223). The outer surface of the cutting rod (224) is provided with several cutting blades. One end of the cutting rod (224) rotates on one side of the inner wall of the slot box (217). A groove (225) is opened on one side of the inner wall of the slot box (217). The end of the cutting rod (224) away from the slider (223) is in the groove (225). The inner wall of the grinding chamber (23) slides, and a worm gear (226) is fixedly connected to one end of the screw (222). A round rod (227) is fixedly connected to one end of the first shaft (25) near the grooved wheel (211). A cylindrical block (228) is rotatably connected to the outer surface of the grinding chamber (23) near the round rod (227). Two curved grooves (229) are opened on the outer surface of the cylindrical block (228). The middle ends of the two curved grooves (229) are intersected. The outer surface of the cylindrical block (228) is X-shaped. A first bevel gear (230) is fixedly connected to one end of the cylindrical block (228). A worm gear (232) is rotatably connected to one side of the bottom of the inner wall of the machine body (1). The outer surface of the worm gear (232) meshes with the outer surface of the worm wheel (226). A second bevel gear (231) is fixedly connected to the top end of the worm gear (232). The outer surface of the second bevel gear (231) meshes with the outer surface of the first bevel gear (230).

2. The pulverizing device for lithium battery negative electrode material according to claim 1, characterized in that: The cylindrical block (228) is fixedly connected to two ends of a groove plate (233), and the groove plate (233) has grooves (234) on both sides. The first shaft (25) is fixedly connected to two arc-shaped rods (235) at one end near the round rod (227).

3. The pulverizing device for lithium battery negative electrode material according to claim 2, characterized in that: The cylindrical block (228) is fixedly connected to a third bevel gear (236) at the end away from the first bevel gear (230). The inner wall of the body (1) is rotatably connected to a fourth bevel gear (237) on the side close to the third bevel gear (236). The outer surface of the fourth bevel gear (237) meshes with the outer surface of the third bevel gear (236). One end of the fourth bevel gear (237) is fixedly connected to a spur gear (238). One end of the inner wall of the slot box (217) is slidably connected to a rack (239). One side of the rack (239) meshes with the outer surface of the spur gear (238). One end of the rack (239) is fixedly connected to a push plate (240). The outer surface of the push plate (240) slides on the inner wall of the slot box (217).

4. The pulverizing device for lithium battery negative electrode material according to claim 3, characterized in that: An auxiliary plate (241) is fixedly connected to the side of the push plate (240) away from the toothed rod (239), and the edge of the auxiliary plate (241) away from the push plate (240) is inclined.

5. The pulverizing device for lithium battery negative electrode material according to claim 4, characterized in that: A positioning cylinder (242) is fixedly connected to one side of the slider (223), and the end of the cutting rod (224) near the slider (223) rotates on the inner wall of the positioning cylinder (242).

6. The pulverizing device for lithium battery negative electrode material according to claim 5, characterized in that: One side of the inner wall of the slot box (217) is an inclined surface, and the bottom end of the slider (223) slides on the inclined side of the inner wall of the slot box (217).

7. A pulverizing device for lithium battery anode materials according to claim 6, characterized in that: The top two sides of the inner wall of the rectangular hole (221) are inclined surfaces, and the width of the top of the inner wall of the rectangular hole (221) is greater than the middle and bottom of the inner wall of the rectangular hole (221).

8. The pulverizing device for lithium battery negative electrode material according to claim 7, characterized in that: A bending plate (243) is fixedly connected to one side of the two bent rods (27) that are close to each other. The outer surface of the bending plate (243) is L-shaped.

9. A pulverizing device for lithium battery negative electrode materials according to claim 8, characterized in that: The outer surface of the wheel (28) is fixedly connected with a protrusion (244), which is a rubber strip made of rubber material.

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