Crushing device for lithium battery negative electrode material

Abstract

The invention discloses a smashing device for a lithium battery negative electrode material, and belongs to the technical field of smashing devices.The smashing device comprises a machine body, a feeding groove is formed in the top end of the machine body, a discharging pipe is fixedly connected to one side of the bottom end of the machine body, a grinding bin is fixedly connected to the top end of the inner wall of the machine body, and a grinding roller is fixedly connected to the outer surface of a grinding rod; a fine grinding device is arranged in the machine body, the fine grinding device comprises a fine grinding bin, a transfer bin and a groove box, a first filtering groove and a second filtering groove are formed in the bottom end of the inner wall of the grinding bin, a sliding block is in threaded connection with the outer surface of a screw rod, and a slitting rod is rotationally connected with one side of the sliding block. According to the scheme, by means of the fine grinding device, large particles and small particles can enter the fine grinding bin and the transfer bin correspondingly to be screened, the large particles are ground into the small particles in the fine grinding bin, then the raw materials are further cut and smashed through back-and-forth movement of the slitting rod in the groove box, and the smashing effect of the smashing device on the lithium battery negative electrode raw materials is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of ore dressing equipment, and more specifically, to a pulverizing device for negative electrode materials of lithium batteries. Background Art

[0002] Lithium battery negative electrode material is a key component of lithium-ion batteries. It plays the role of storing and releasing energy in the battery, and mainly affects the initial efficiency and cycle performance of the lithium battery. Among them, natural graphite has advantages in cost and specific capacity, and artificial graphite has advantages in cycle performance, safety performance, charge and discharge rate, etc. When producing negative electrode materials, a crushing device is required to crush the graphite.

[0003] However, in actual application, when the existing pulverizing device pulverizes the negative electrode material, part of the raw materials are not completely pulverized, so that large particles and small particles in the raw materials are output together, and the uniformity of the raw materials is low, resulting in poor pulverizing effect when the pulverizing device is used.

[0004] To this end, a pulverizing device for lithium battery negative electrode materials is proposed. Summary of the invention

[0005] In view of the problems existing in the prior art, the object of the present invention is to provide a pulverizing device for lithium battery negative electrode materials.

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

[0007] A pulverizing device for lithium battery negative electrode materials comprises a body, a feed trough is provided at the top of the body, a discharge pipe is fixedly connected to one side of the bottom end of the body, a grinding bin is fixedly connected to the top of the inner wall of the body, two grinding rods are rotatably connected to the two ends of the inner wall of the grinding bin, gears are fixedly connected to the outer surfaces of the two grinding rods, the gears on the outer surfaces of the two grinding rods are meshed with each other, a grinding roller is fixedly connected to the outer surface of the grinding rod, a first motor is provided at one side of the inner wall of the body, the output end of the first motor is fixedly connected to one end of a grinding rod, and a fine grinding device is provided inside the body below the grinding bin.

[0008] Furthermore, the fine grinding device includes a fine grinding bin, a transfer bin and a trough box, the inner wall bottom end of the fine grinding bin is provided with a first drop trough, the inner wall of the first drop trough is provided with a fine filter screen, the inner wall bottom end of the transfer bin is provided with a second drop trough, the top ends of the fine grinding bin and the transfer bin are fixedly connected to the bottom end of the grinding bin, the inner wall bottom end of the grinding bin is provided with a first filter trough and a second filter trough, the top ends of the first filter trough and the second filter trough are respectively provided with a fine filter screen and a coarse filter screen, the first filter trough is connected to the top end of the inner wall of the transfer bin, the second filter trough is connected to the top end of the inner wall of the fine grinding bin, both ends of the inner wall of the fine grinding bin are rotatably connected to a first shaft rod, the outer surface of the first shaft rod is rotatably connected to a rolling roller, The outer surface of the first shaft is fixedly connected with two bending rods, and the two bending rods are rotatably connected to two squeezing rollers on one side close to each other, and gears are fixedly connected to the two ends of the two squeezing rollers respectively, and the gears at the two ends of the two squeezing rollers are meshed, and the two ends of one squeezing roller are fixedly connected with a rotating wheel, and the outer surface of the rotating wheel moves on the inner wall of the fine grinding bin, and a second motor is provided on one side of the inner wall of the machine body, and the output end of the second motor is fixedly connected to one end of the first shaft, and the two ends of the inner wall of the transfer bin are rotatably connected with a second shaft, and two conical augers are fixedly connected to the outer surface of the second shaft, and the ends with smaller radii of the two conical augers face the same direction, and the appearance of the first shaft and the second shaft One end of the surface is fixedly connected to a groove wheel, and the outer surface of the groove wheel is sleeved with a belt. The bottom ends of the fine grinding bin and the transfer bin are fixedly connected to the top of the groove box, and the top of the groove box is provided with a first receiving groove and a second receiving groove, the first receiving groove is connected with the first drop groove, and the second receiving groove is connected with the second drop groove. The inner wall of the groove box is fixedly connected with a groove plate, and the outer surface of the groove plate is provided with a plurality of rectangular holes. Screws are rotatably connected to the inner wall of the groove box at both ends, and a slider is threadedly connected to the outer surface of the screw. A slitting rod is rotatably connected to one side of the slider, and a plurality of cutting knives are arranged on the outer surface of the slitting rod. One end of the slitting rod rotates on one side of the inner wall of the groove box, and a sliding The worm gear is connected with the gear of the first shaft through the upper end of the gear and the lower end of the gear is connected with the gear of the first shaft through the gear.

[0009] Furthermore, two ends of the cylindrical block are respectively fixedly connected with slot plates, two sides of the slot plates are provided with grooves, and one end of the first shaft rod close to the round rod is fixedly connected with two arc rods.

[0010] Furthermore, the end of the cylindrical block away from the first bevel gear is fixedly connected to the third bevel gear, and the inner wall of the body is rotatably connected to the fourth bevel gear on the side close to the third bevel gear, and the outer surface of the fourth bevel gear is meshed with the outer surface of the third bevel gear. One end of the fourth bevel gear is fixedly connected to a spur gear, and one end of the inner wall of the slot box is slidably connected to a gear rod, one side of the gear rod is meshed with the outer surface of the spur gear, and one end of the gear rod is fixedly connected to a push plate, and 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 a side of the push plate away from the gear rod, and an edge of the auxiliary plate away from the push plate is an inclined surface.

[0012] Furthermore, a positioning cylinder is fixedly connected to one side of the sliding block, and an end of the slitting rod close to the sliding block rotates on the inner wall of the positioning cylinder.

[0013] Furthermore, one side of the inner wall of the trough box is an inclined surface, and the bottom end of the sliding block slides on the side of the inner wall of the trough box that is the inclined surface.

[0014] Furthermore, both sides of the top end of the inner wall of the rectangular hole are inclined surfaces, and the width of the top end of the inner wall of the rectangular hole is greater than the middle end and the bottom end of the inner wall of the rectangular hole.

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

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

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) This scheme provides a fine grinding device, and screens the large and small particles outputted from the grinding bin by allowing the large and small particles to enter the fine grinding bin and the transfer bin respectively, and grinds the large particles into small particles in the fine grinding bin, and then further cuts and crushes the raw materials by moving the cutting rod inside the trough box back and forth, thereby improving the crushing effect of the crushing device on the negative electrode raw materials of lithium batteries.

[0019] (2) This solution arranges two conical augers on the outer surface of the second shaft to rotate, thereby squeezing and pushing the raw materials inside the transfer bin, so that the raw materials can pass through the second drop chute and the second receiving chute into the interior of the trough box more quickly, thereby improving the material output rate.

[0020] (3) This solution can also push the negative electrode material inside the tank box toward the discharge pipe according to the movement of the push plate, thereby increasing the rate at which the raw material is output through the discharge pipe and avoiding the accumulation of raw materials at the connection between the tank box and the discharge pipe as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

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

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

[0027] Figure 7 It is a structural schematic diagram of the transfer warehouse in the present invention;

[0028] Figure 8 It is a schematic diagram of the partial cross-sectional structure of the fine grinding bin in the present invention;

[0029] Fig. 9 It is a structural schematic diagram of the slot box in the present invention;

[0030] Fig.10 It is a schematic diagram of the partial cross-sectional structure of the slot box in the present invention;

[0031] Fig.11 It is a schematic diagram of the partial cross-sectional structure of the slot box in the present invention;

[0032] Fig.12 It is a schematic diagram of the structure of the first shaft in the present invention;

[0033] Fig.13 It is a schematic diagram of the structure of the cylindrical block in the present invention.

[0034] Description of the numbers in the figure:

[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 trough; 22. Second filter trough; 23. Fine grinding chamber; 24. Transfer chamber; 25. First shaft rod; 26. Rolling roller; 27. Bending rod; 28. Rotating wheel; 29. ​​Extrusion roller; 210. First drop trough; 211. Grooved wheel; 212. Second shaft rod; 213. Second motor; 214. Belt; 215. Conical auger; 216. Second drop trough; 217. Groove box; 218. First receiving trough; 219. Second Receiving groove; 220, groove plate; 221, rectangular hole; 222, screw; 223, slider; 224, cutting rod; 225, slide groove; 226, worm gear; 227, round rod; 228, cylindrical block; 229, curved groove; 230, first bevel gear; 231, second bevel gear; 232, worm; 233, groove sheet; 234, groove; 235, arc rod; 236, third bevel gear; 237, fourth bevel gear; 238, flat gear; 239, gear rod; 240, push plate; 241, auxiliary plate; 242, positioning cylinder; 243, bending plate; 244, convex strip. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0037] See also Figure 1-3A pulverizing device for lithium battery negative electrode materials comprises a body 1, a feed trough 3 is arranged at the top of the body 1, a discharge pipe 4 is fixedly connected to one side of the bottom end of the body 1, a grinding bin 5 is fixedly connected to the top of the inner wall of the body 1, two grinding rods 6 are rotatably connected to the inner walls of the grinding bin 5 at both ends, gears are fixedly connected to the outer surfaces of the two grinding rods 6, the gears on the outer surfaces of the two grinding rods 6 are meshed with each other, a grinding roller 7 is fixedly connected to the outer surface of the grinding rod 6, a first motor 8 is arranged at one side of the inner wall of the body 1, the output end of the first motor 8 is fixedly connected to one end of a grinding rod 6, and the inner wall of the body 1 is located at the grinding bin 5. A fine grinding device 2 is arranged at the bottom. When the pulverizing device is used to pulverize the negative electrode material of the lithium battery, the receiving pipe of the material conveying pump is first connected to one end of the discharge pipe 4, and then the raw material is added into the body 1 through the feed trough 3 at the top of the body 1. The first motor 8 is controlled to operate through the control console on one side of the body 1, and a grinding rod 6 is driven to rotate through the output end of the first motor 8, and another grinding rod 6 is driven to rotate through the gear on the outer surface of the grinding rod 6, so that the two grinding rollers 7 inside the grinding chamber 5 rotate in the same direction, the raw material is crushed and pulverized, and the crushed material is output through the discharge pipe 4;

[0038] See also Figure 1-13The fine grinding device 2 includes a fine grinding bin 23, a transfer bin 24 and a trough box 217. The bottom end of the inner wall of the fine grinding bin 23 is provided with a first drop trough 210, the inner wall of the first drop trough 210 is provided with a fine filter screen, the bottom end of the inner wall of the transfer bin 24 is provided with a second drop trough 216, the top ends of the fine grinding bin 23 and the transfer bin 24 are fixedly connected to the bottom end of the grinding bin 5, the bottom end of the inner wall of the grinding bin 5 is provided with a first filter trough 21 and a second filter trough 22, the top ends of the first filter trough 21 and the second filter trough 22 are respectively provided with a fine filter screen and a coarse filter screen, the first filter trough 21 is connected to the top end of the inner wall of the transfer bin 24, the second filter trough 22 is connected to the top end of the inner wall of the fine grinding bin 23, and the inner walls of the fine grinding bin 23 are rotatably connected with first shaft rods 25 at both ends, and the first shaft rods 25 are connected to the inner wall of the fine grinding bin 23. The outer surface is rotatably connected with a rolling roller 26, the outer surface of the first shaft 25 is fixedly connected with two bending rods 27, the side of the two bending rods 27 close to each other is rotatably connected with two squeezing rollers 29, the two ends of the two squeezing rollers 29 are respectively fixedly connected with gears, the gears at the two ends of the two squeezing rollers 29 are meshed, the two ends of one squeezing roller 29 are respectively fixedly connected with a rotating wheel 28, the outer surface of the rotating wheel 28 moves on the inner wall of the fine grinding bin 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, the inner wall of the transfer bin 24 is rotatably connected with a second shaft 212, the outer surface of the second shaft 212 is fixedly connected with two conical augers 215, the two conical augers 215 The ends with smaller radius are oriented in the same direction, one end of the outer surface of the first shaft rod 25 and the second shaft rod 212 is respectively fixedly connected with a groove wheel 211, and the outer surface of the groove wheel 211 is sleeved with a belt 214. The bottom ends of the fine grinding bin 23 and the transfer bin 24 are fixedly connected with the top of the groove box 217, and the top of the groove box 217 is provided with a first receiving groove 218 and a second receiving groove 219, the first receiving groove 218 is connected with the first drop groove 210, and the second receiving groove 219 is connected with the second drop groove 216, and the inner wall of the groove box 217 is fixedly connected with a groove plate 220, and the outer surface of the groove plate 220 is provided with a plurality of rectangular holes 221, and the inner wall of the groove box 217 is rotatably connected with screws 222, and the outer surface of the screw 222 is threadedly connected with a slider 223. One side of the block 223 is rotatably connected with a slitting rod 224, and a plurality of cutting knives are arranged 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, and a slide groove 225 is provided on one side of the inner wall of the slot box 217. One end of the slitting rod 224 away from the slider 223 slides on the inner wall of the slide groove 225. One end of the screw rod 222 is fixedly connected with a worm gear 226, and one end of the first shaft rod 25 close to the groove wheel 211 is fixedly connected with a round rod 227. The outer surface of the fine grinding bin 23 is rotatably connected with a cylindrical block 228 close to the round rod 227. The outer surface of the cylindrical block 228 is provided with two curved grooves 229, and the middle ends of the two curved grooves 229 are staggered with each other. The two curved grooves 229 are X-shaped on the outer surface of the cylindrical block 228.One end of the cylindrical block 228 is fixedly connected to the first bevel gear 230, and one side of the bottom end of the inner wall of the body 1 is rotatably connected to a worm 232. The outer surface of the worm 232 meshes with the outer surface of the worm wheel 226. The top of the worm 232 is fixedly connected to the 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 a fine grinding bin 23 and a transfer bin 24, after the raw materials are ground by the grinding roller 7 inside the grinding bin 5, the large particle raw materials and the small particle raw materials will respectively pass 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 into the interior of the fine grinding bin 23 and the transfer bin 24. The second motor 213 operating the outer surface of the fine grinding bin 23 drives the first shaft 25 to rotate. The first shaft 25 drives the rolling roller 26 to move and rotate inside the fine grinding bin 23, and further crushes the large particles of raw materials entering the fine grinding bin 23. When the first shaft 25 rotates, the wheels 28 on both sides of the squeezing roller 29 at one end of the bending rod 27 will move on the inner wall of the fine grinding bin 23, and drive one squeezing roller 29 to rotate through the wheel 28, and the two squeezing rollers 29 are rotated in the same direction through the gears at both ends of the squeezing roller 29, so as to further squeeze and crush the raw materials entering between the squeezing rollers 29. After the large particles inside the fine grinding bin 23 are ground into small particles, they will pass through the fine filter on the inner wall of the first drop trough 210 and the first receiving groove 218 at the top of the trough box 217 to enter the trough box 217. At the same time, when the first shaft 25 rotates, it will drive the groove wheel 2 11 rotates, and the groove wheel 211 at one end of the second shaft rod 212 and the second shaft rod 212 are driven to rotate through the belt 214, so that the two conical augers 215 on the outer surface of the second shaft rod 212 rotate, and the raw materials in the transfer bin 24 are squeezed and pushed, so that the raw materials can pass through the second drop groove 216 and the second receiving groove 219 more quickly into the inside of the trough box 217. After the raw materials in the fine grinding bin 23 and the transfer bin 24 enter the inside of the trough box 217, part of them will pass through the rectangular hole 221 on the outer surface of the trough plate 220 to enter the bottom of the trough plate 220, and part of them will be located above the trough plate 220. When the first shaft rod 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 curved hole 221 on the outer surface of the cylindrical block 228 below. The cylindrical block 228 is pushed to rotate 180° inside the curved groove 229 and moves along the direction of the curved groove 229 inside the curved groove 229. When the cylindrical block 228 rotates, it drives the first bevel gear 230 to rotate, and the worm 232 is driven to rotate through the first bevel gear 230, and the worm wheel 226 is driven to rotate through the worm 232, and the screw 222 is driven to rotate through the worm wheel 226, so that the slider 223 on the outer surface of the screw 222 moves on the outer surface of the screw 222, and one end of the cutting rod 224 is driven by the slider 223 to slide and rotate on the inner wall of the slide groove 225, and the raw materials located below and above the groove plate 220 are finally crushed by the cutting knife on the outer surface of the cutting rod 224, and then the round rod 227 will be separated from the inside 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 degrees in the original direction, so that the screw 222 rotates in the opposite direction, and the slider 223 on the outer surface of the screw 222 is controlled to drive the cutting rod 224 to move in another direction, and the cutting rod 224 moves back and forth to make the cutting knife on the surface crush the raw material, and by setting the fine grinding device 2, the large particles and small particles output by the grinding bin 5 are respectively entered into the fine grinding bin 23 and the transfer bin 24 to screen the large particles and small particles, and the large particles are ground into small particles in the fine grinding bin 23, and then the raw materials are further cut and crushed by the back and forth movement of the cutting rod 224 in the slot box 217, so as to improve the crushing effect of the crushing device on the negative electrode raw materials of lithium batteries;

[0039] See also Figure 3-13 , the two ends of the cylindrical block 228 are respectively fixedly connected with groove pieces 233, and grooves 234 are provided on both sides of the groove pieces 233. The end of the first shaft rod 25 close to the round rod 227 is fixedly connected with two arc rods 235. After the first shaft rod 25 rotates to make one end of the round rod 227 slide into the curved groove 229 on the outer surface of the cylindrical block 228 and disengage from the curved groove 229, the first shaft rod 25 continues to rotate to make an arc rod 235 on one side of the round rod 227 slide away from one end of the first shaft rod 25 on the inner wall of the groove 234 on the outer surface of the two groove pieces 233 at both ends of the cylindrical block 228, thereby limiting the angle between the cylindrical block 228 and the first shaft rod 25 and the body 1, and avoiding the cylindrical block 228 from rotating autonomously as much as possible;

[0040] See also Figure 3-13The end of the cylindrical block 228 away from the first bevel gear 230 is fixedly connected to the third bevel gear 236, and the inner wall of the body 1 is rotatably connected to the side of the third bevel gear 236. The outer surface of the fourth bevel gear 237 is meshed with the outer surface of the third bevel gear 236. One end of the fourth bevel gear 237 is fixedly connected to the flat gear 238. One end of the inner wall of the slot box 217 is slidably connected to a gear rod 239. One side of the gear rod 239 is meshed with the outer surface of the flat gear 238. One end of the gear rod 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. When the cylindrical block 228 rotates toward the inside of the body 1, it will drive the third bevel gear 236 to rotate inward. The third bevel gear 236 drives the flat gear 238 to rotate inward, and the flat gear 238 drives the gear rod 239 to push the push plate 240 to slide inward on the inner wall of the slot box 217, and the negative electrode material inside the slot box 217 is pushed toward the discharge pipe 4 by the push plate 240, thereby increasing the rate at which the raw materials are output through the discharge pipe 4, and avoiding the accumulation of raw materials at the connection between the slot box 217 and the discharge pipe 4 as much as possible. When the cylindrical block 228 rotates in the direction away from the body 1, it drives the third bevel gear 236 to rotate outward, and the third bevel gear 236 drives the flat gear 238 to rotate outward, and the flat gear 238 drives the gear rod 239 to pull the push plate 240 to slide back to its original position on the inner wall of the slot box 217 in the original direction;

[0041] See also Figure 3-13 The side of the push plate 240 away from the toothed rod 239 is fixedly connected with an auxiliary plate 241. The edge of the side of the auxiliary plate 241 away from the push plate 240 is an inclined surface. When the push plate 240 moves through the inclined surface of the auxiliary plate 241 to push the raw materials inside the slot box 217, the raw materials are not easily accumulated and enter the contact between the push plate 240 and the bottom end of the inner wall of the slot box 217, thereby improving the pushing effect of the push plate 240 on the raw materials. A positioning cylinder 242 is fixedly connected to one side of the slider 223. The end of the slitting rod 224 close to the slider 223 is in the inner part of the positioning cylinder 242. The wall rotates, and the angle between one end of the slitting rod 224 and the slider 223 can be further limited by setting the positioning cylinder 242, so as to improve the stability of the slitting rod 224 when rotating. 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 side of the inner wall of the slot box 217 with the inclined surface. By setting one side of the inner wall of the slot box 217 as an inclined surface, the raw materials entering the slot box 217 from the second receiving slot 219 are not easily accumulated on the moving path of the slider 223 on the inner wall of the slot box 217, thereby blocking the movement of the slider 223.

[0042] See also Figure 3-13The top of the inner wall of the rectangular hole 221 has inclined surfaces on both sides, 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 of the inner wall of the rectangular hole 221 to have inclined surfaces on both sides 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 pass through the rectangular hole 221 and enter the inner bottom of the slot box 217, and is not easy to accumulate on the top of the slot plate 220.

[0043] See also Figure 3-13 A bending plate 243 is fixedly connected to one side where the two bending rods 27 are close to each other. The outer surface shape of the bending plate 243 is L-shaped. By setting the bending plate 243, the raw material entering between the rolling roller 26 and the bending plate 243 can be blocked, thereby increasing the contact probability between the raw material inside the fine grinding bin 23 and the rolling roller 26, and further improving the rolling effect of the rolling roller 26 on the raw material. A convex strip 244 is fixedly connected to the outer surface of the rotating wheel 28. The convex strip 244 is a rubber strip. By setting the convex strip 244 made of rubber, the friction force when the outer surface of the rotating wheel 28 contacts the inner wall of the fine grinding bin 23 can be increased, so that the rotating wheel 28 is not easily unable to rotate normally due to the obstruction of the raw material when moving on the inner wall of the fine grinding bin 23.

[0044] Instructions for use: When the present application is used, first connect the receiving pipe of the material conveying pump machine to one end of the discharge pipe 4, then add the raw material into the body 1 through the feed trough 3 at the top of the body 1, and control the operation of the first motor 8 through the control console on one side of the body 1, and drive a grinding rod 6 to rotate through the output end of the first motor 8, and drive another grinding rod 6 to rotate through the gear on the outer surface of the grinding rod 6, so that the two grinding rollers 7 inside the grinding bin 5 rotate in the same direction, and the raw material is crushed and ground. After the raw material is ground by the grinding roller 7 inside the grinding bin 5, the large particle raw material and the small particle raw material will enter the fine grinding bin 23 through the coarse filter at the top of the inner wall of the second filter tank 22 and the fine filter at the top of the inner wall of the first filter tank 21 respectively. The second motor 213 operating the outer surface of the fine grinding bin 23 drives the first shaft 25 to rotate, and the first shaft 25 drives the rolling roller 26 to move and rotate inside the fine grinding bin 23, so as to further crush and pulverize the large particles of raw materials entering the fine grinding bin 23. When the first shaft 25 rotates, the wheels 28 on both sides of the squeezing roller 29 at one end of the bending rod 27 will move on the inner wall of the fine grinding bin 23, and drive one squeezing roller 29 to rotate through the wheel 28, and the two squeezing rollers 29 will rotate in the same direction through the gears at both ends of the squeezing rollers 29, so as to further squeeze and pulverize the raw materials entering between the squeezing rollers 29, and the large particles inside the fine grinding bin 23 will be ground into small particles and then pass through the fine filter on the inner wall of the first drop chute 210. The first receiving groove 218 at the top of the trough box 217 enters the interior of the trough box 217. At the same time, when the first shaft 25 rotates, it will drive the groove wheel 211 at one end to rotate, and the groove wheel 211 at one end of the second shaft 212 and the second shaft 212 are driven to rotate through the belt 214, so that the two conical augers 215 on the outer surface of the second shaft 212 rotate, and the raw materials in the transfer bin 24 are squeezed and pushed, so that the raw materials can pass through the second drop groove 216 and the second receiving groove 219 to enter the interior of the trough box 217 more quickly. After the raw materials in the fine grinding bin 23 and the transfer bin 24 enter the interior of the trough box 217, part of them will pass through the rectangular hole 221 on the outer surface of the trough plate 220 to enter the bottom of the trough plate 220, and part of them will be located above the trough plate 220 When the first shaft rod 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 curved groove 229 on the outer surface of the cylindrical block 228 below, and move inside the curved groove 229 along the direction of the curved groove 229, pushing the cylindrical block 228 to rotate 180 degrees. When the cylindrical block 228 rotates, it will drive the first bevel gear 230 to rotate, and the worm 232 will be driven to rotate through the first bevel gear 230, and the worm wheel 226 will be driven to rotate through the worm 232, and the screw 222 will be driven to rotate through the worm wheel 226, so that the slider 223 on the outer surface of the screw 222 moves on the outer surface of the screw 222, and one end of the slitting rod 224 is driven by the slider 223 to slide on the inner wall of the slide groove 225 and rotate.The cutting knife on the outer surface of the cutting rod 224 finally crushes the raw materials below and above the groove plate 220, and then the round rod 227 will be separated from the inside of the curved groove 229. The first shaft 25 continues to rotate the other end of the round rod 227 to enter 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, so that the screw 222 rotates in the opposite direction, and the slider 223 on the outer surface of the control screw 222 drives the cutting rod 224 to move in the other direction. The cutting knife on the surface crushes the raw materials through the back and forth movement of the cutting rod 224. At the same time, when the cylindrical block 228 rotates toward the inside of the body 1, it drives the third bevel gear 236 inward. The cylindrical block 228 rotates inwards, and the flat gear 238 is driven to rotate inwards by the third bevel gear 236, and the gear rod 239 is driven to push the push plate 240 to slide inwards on the inner wall of the tank box 217 by the flat gear 238, and the negative electrode material inside the tank box 217 is pushed toward the discharge pipe 4 by the push plate 240. When the cylindrical block 228 rotates in the direction away from the machine body 1, the third bevel gear 236 is driven to rotate outwards by the third bevel gear 236, and the gear rod 239 is driven to pull the push plate 240 to slide back to the original position on the inner wall of the tank box 217 in the original direction by the flat gear 238, and finally the material pump outside the discharge pipe 4 extracts the raw materials inside the tank box 217 through the discharge pipe 4.

[0045] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pulverizing device for lithium battery negative electrode materials, comprising a body (1), characterized in that: A feed trough (3) is provided at the top of the machine body (1), a discharge pipe (4) is fixedly connected to one side of the bottom end of the machine body (1), a grinding bin (5) is fixedly connected to the top of the inner wall of the machine body (1), two grinding rods (6) are rotatably connected to the two ends of the inner wall of the grinding bin (5), the outer surfaces of the two grinding rods (6) are fixedly connected to gears, the gears on the outer surfaces of the two grinding rods (6) are meshed with each other, the outer surfaces of the grinding rods (6) are fixedly connected to grinding rollers (7), 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), and a fine grinding device (2) is provided inside the machine body (1) below the grinding bin (5).

2. A pulverizing device for lithium battery negative electrode materials according to claim 1, characterized in that: The fine grinding device (2) comprises a fine grinding chamber (23), a transfer chamber (24) and a tank box (217); a first drop groove (210) is provided at the bottom end of the inner wall of the fine grinding chamber (23); a fine filter screen is arranged on the inner wall of the first drop groove (210); a second drop groove (216) is provided at the bottom end of the inner wall of the transfer chamber (24); the top ends of the fine grinding chamber (23) and the transfer chamber (24) are fixedly connected to the bottom end of the grinding chamber (5); a first filter groove (21) and a second filter groove (22) are provided at the bottom end of the inner wall of the grinding chamber (5); a fine filter screen and a coarse filter screen are arranged on the top ends of the first filter groove (21) and the second filter groove (22) respectively; the inner wall top ends of the first filter groove (21) and the transfer chamber (24) are connected to the inner wall top ends of the first filter groove (21). The second filter tank (22) is connected to the top of the inner wall of the fine grinding bin (23); the inner wall of the fine grinding bin (23) is rotatably connected to a first shaft rod (25) at both ends; the outer surface of the first shaft rod (25) is rotatably connected to a rolling roller (26); the outer surface of the first shaft rod (25) is fixedly connected to two bending rods (27); the two bending rods (27) are rotatably connected to two squeezing rollers (29) on the side close to each other; the two ends of the two squeezing rollers (29) are respectively fixedly connected to gears; the gears at the two ends of the two squeezing rollers (29) are meshed; the two ends of one squeezing 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 bin (23); A second motor (213) is provided on one side of the inner wall of the machine body (1), and the output end of the second motor (213) is fixedly connected to one end of the first shaft (25). The inner wall of the transfer bin (24) is rotatably connected to the second shaft (212) at both ends. The outer surface of the second shaft (212) is fixedly connected to two conical augers (215), and the ends with smaller radii of the two conical augers (215) face the same direction. One end of the outer surface of the first shaft (25) and the second shaft (212) is respectively fixedly connected to a groove wheel (211), and the outer surface of the groove wheel (211) is sleeved with a belt (214). The bottom ends of the fine grinding bin (23) and the transfer bin (24) are fixedly connected to the top end of the groove 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 drop slot (210), the second receiving slot (219) is connected to the second drop slot (216), the inner wall of the slot box (217) is fixedly connected with a slot plate (220), the outer surface of the slot plate (220) is provided with a plurality of rectangular holes (221), the inner walls of the slot box (217) are rotatably connected with screw rods (222), the outer surface of the screw rods (222) is threadedly connected with a slider (223), one side of the slider (223) is rotatably connected with a slitting rod (224), the outer surface of the slitting rod (224) is provided with a plurality of cutting knives,One end of the slitting rod (224) rotates on one side of the inner wall of the groove box (217), and a sliding groove (225) is provided on one side of the inner wall of the groove box (217). The end of the slitting rod (224) away from the slider (223) slides on the inner wall of the sliding groove (225). One end of the screw rod (222) is fixedly connected to a worm gear (226). One end of the first shaft rod (25) close to the groove wheel (211) is fixedly connected to a round rod (227). The outer surface of the fine grinding chamber (23) close to the round rod (227) is rotatably connected to a cylindrical block (228). The outer surface of the cylindrical block (228) is provided with two A curved groove (229) is provided, the middle ends of the two curved grooves (229) are interlaced with each other, and the two curved grooves (229) are in 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 (232) is rotatably connected to one side of the bottom end of the inner wall of the body (1); the outer surface of the worm (232) is meshed with the outer surface of the worm wheel (226); the top end of the worm (232) is fixedly connected to a second bevel gear (231); the outer surface of the second bevel gear (231) is meshed with the outer surface of the first bevel gear (230).

3. A pulverizing device for lithium battery negative electrode materials according to claim 2, characterized in that: The two ends of the cylindrical block (228) are respectively fixedly connected with grooves (233), and grooves (234) are provided on both sides of the groove (233). The end of the first shaft rod (25) close to the round rod (227) is fixedly connected with two arc rods (235).

4. A pulverizing device for lithium battery negative electrode materials according to claim 3, characterized in that: One end of the cylindrical block (228) away from the first bevel gear (230) is fixedly connected to the third bevel gear (236); the inner wall of the machine body (1) is rotatably connected to the side of the third bevel gear (236); the outer surface of the fourth bevel gear (237) is meshed with the outer surface of the third bevel gear (236); one end of the fourth bevel gear (237) is fixedly connected to the flat gear (238); one end of the inner wall of the slot box (217) is slidably connected to a gear rod (239); one side of the gear rod (239) is meshed with the outer surface of the flat gear (238); one end of the gear rod (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).

5. A pulverizing device for lithium battery negative electrode materials according to claim 4, characterized in that: An auxiliary plate (241) is fixedly connected to one side of the push plate (240) away from the gear rod (239), and an edge of one side of the auxiliary plate (241) away from the push plate (240) is an inclined surface.

6. A pulverizing device for lithium battery negative electrode materials according to claim 5, characterized in that: One side of the sliding block (223) is fixedly connected to a positioning cylinder (242), and one end of the slitting rod (224) close to the sliding block (223) rotates on the inner wall of the positioning cylinder (242).

7. 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 sliding block (223) slides on the side of the inner wall of the slot box (217) that is an inclined surface.

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

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

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

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