Processing device for preparing lithium battery silicon-carbon negative electrode material

Abstract

The application relates to the field of lithium battery material processing, in particular to a processing device for preparing a lithium battery silicon-carbon negative electrode material, which comprises a shell, a grinding base, a motor, a grinding cone, a feeding pipe, a discharging pipe, an air pipe and a fixed circular plate and the like; the shell is fixedly connected with the grinding base; the shell is fixedly connected with the motor; the shell is rotationally connected with the grinding cone, and the motor output shaft is fixedly connected with the grinding cone; the shell is connected with the feeding pipe; the shell is connected with the discharging pipe; the shell is fixedly connected with the air pipe, and the air pipe is connected with an external air conveying mechanism; the shell is fixedly connected with the fixed circular plate; and the fixed circular plate is provided with a plurality of discharge ports. The vertical filter cartridge is matched with the air blowing hole to blow out the gas, the mixed grinding material after grinding is screened, the accumulation and blockage can be effectively avoided, and the overall screening efficiency is ensured.

Description

A processing apparatus for preparing silicon-carbon anode materials for lithium batteries Technical Field

[0001] This invention relates to the field of lithium battery material processing, and more particularly to a processing apparatus for preparing silicon-carbon anode materials for lithium batteries. Background Technology

[0002] Silicon-carbon anode materials for lithium batteries are typically composed of silicon and carbon materials. Compared to traditional graphite anodes, silicon-carbon anode materials have higher rate performance and can maintain higher capacity output, resulting in better battery performance and are widely used in various fields.

[0003] Lithium-ion battery silicon-carbon anode materials are typically prepared by mixing silicon and carbon powders. During processing, these silicon and carbon materials need to be ground. However, existing grinding equipment cannot directly grind them into powder with the required particle size in a single pass; multiple grinding processes are usually required. Furthermore, some silicon and carbon materials are ground into powder with the required particle size during this process. Therefore, current grinding methods involve multiple grinding and sieving steps. To improve processing efficiency and ensure similar particle sizes, silicon and carbon materials are often ground together. Currently, sieves are commonly used to sieve the mixed abrasive material after grinding. However, with existing sieves, the mixed abrasive material tends to accumulate on the sieve, leading to blockages and poor sieving efficiency, which can reduce the overall efficiency of silicon-carbon anode material preparation. Summary of the Invention

[0004] In order to overcome the shortcomings of existing sieve screening processes, such as the accumulation of mixed abrasive on the sieve and subsequent blockage, resulting in poor screening effect and reduced overall silicon-carbon anode material preparation efficiency, this invention provides a processing device for preparing silicon-carbon anode materials for lithium batteries.

[0005] The technical implementation of this invention is as follows: A processing device for preparing silicon-carbon anode materials for lithium batteries includes a shell, a grinding base, a motor, a grinding cone, a feed pipe, and a discharge pipe; the grinding base is fixedly connected to the shell; the motor is fixedly connected to the shell; the grinding cone is rotatably connected to the shell, and the output shaft of the motor is fixedly connected to the grinding cone; the feed pipe is connected to the shell; the discharge pipe is connected to the shell; it also includes a vent pipe, a fixed circular plate, a gas supply pipe, a vent rod, an electric slide rail, a filter cartridge, a limiting cylinder, a guide plate, and a spiral plate; the vent pipe is fixedly connected to the shell and is connected to an external gas supply mechanism; the fixed circular plate is fixedly connected to the shell; the fixed circular plate... It has several feeding ports; a fixed circular plate is fixedly connected to a limiting cylinder, and the upper side of the limiting cylinder is fixedly connected to the bottom of the grinding base; the grinding base is detachably connected to an electric slide rail; the electric slide rail is slidably connected to a filter cylinder via a slider, the filter cylinder is rotatably connected to the fixed circular plate, and the filter cylinder is located in the middle of the limiting cylinder; a venting rod is fixedly connected to the fixed circular plate, and the venting rod is located in the middle of the filter cylinder; the venting rod has several air blowing holes; the venting pipe is connected to an air supply pipe, and the air supply pipe is connected to the venting rod; a guide plate is fixedly connected to the venting rod; a spiral plate is fixedly connected to the inner wall of the filter cylinder, the spiral plate is set in an inclined shape with the inner side higher and the outer side lower, and the spiral plate is located below the guide plate.

[0006] As a preferred embodiment of the present invention, it further includes a guide plate and a spiral plate; the air rod is fixedly connected to the guide plate; the inner wall of the filter cartridge is fixedly connected to the spiral plate, and the spiral plate is located below the guide plate.

[0007] As a preferred embodiment of the present invention, the spiral plate is configured to be inclined with the inner side higher and the outer side lower, and the air blowing hole is configured to be inclined downward.

[0008] As a preferred embodiment of the present invention, it further includes elastic striking rods; a plurality of elastic striking rods are rotatably connected to the bottom of the grinding base by a torsion spring, and the elastic striking rods are in contact with the surface of the filter cartridge.

[0009] As a preferred embodiment of the present invention, it further includes a connecting circular tube; the grinding cone has a cavity; the air rod is connected to the connecting circular tube, the connecting circular tube is rotatably connected to the grinding cone, and the connecting circular tube is connected to the cavity.

[0010] As a preferred embodiment of the present invention, the grinding cone has several air outlets, and the air outlets are inclined downwards.

[0011] As a preferred embodiment of the present invention, it further includes a filter screen; the grinding base has a buffer groove; the buffer groove has several channels; and the filter screen is fixedly attached to the surface of the buffer groove.

[0012] As a preferred embodiment of the present invention, it further includes a connecting pipe, a second air supply pipe, and an air blowing pipe; the air supply pipe is connected to the connecting pipe; the connecting pipe is connected to the second air supply pipe, and the second air supply pipe is located at the buffer groove; the second air supply pipe is connected to a plurality of air blowing pipes.

[0013] As a preferred embodiment of the present invention, it further includes a reflux unit, wherein the outer shell is connected to a reflux unit for refluxing abrasive particles with excessive particle size; the reflux unit includes a reflux pipe, a pump, a temporary storage box, and a discharge trough; the pump is fixedly connected to the outer shell; the pump is connected to the reflux pipe, and the lower end of the reflux pipe passes through a fixed circular plate and communicates with the inside of the filter cartridge; the upper end of the reflux pipe is connected to the temporary storage box, and the temporary storage box is fixedly connected to the outer shell; the temporary storage box is connected to the discharge trough, and the discharge trough is located above the grinding base.

[0014] As a preferred embodiment of the present invention, it further includes a buffer spring; a buffer spring for buffering the backflow of abrasive is fixed inside the temporary storage box.

[0015] Beneficial effects:

[0016] Compared to existing methods of sieving using sieves, this invention uses a vertical filter cylinder with air blowing holes to sieve the ground abrasive mixture. This effectively avoids accumulation and clogging, ensuring overall sieving efficiency. Furthermore, the electric slide rail and spiral plate design, with the spiral plate increasing the falling time of the abrasive mixture, allows the air blowing holes to fully agitate the ground abrasive mixture, breaking up any clumps of abrasive particles and ensuring effective sieving.

[0017] The hot air is simultaneously introduced into the cavity through the connecting pipe. The hot air in the cavity heats the grinding surface of the grinding cone, so that the grinding cone heats and dries the mixed abrasive during the grinding process. This effectively prevents and reduces adhesion and ensures that the mixed abrasive is discharged downward normally. The hot air blown out through the air hole can also heat and dry the ground abrasive particles.

[0018] Hot air is blown out through the vent to agitate the grinding mixture, accelerating its downward movement and blowing off any attached abrasive particles. It also agitates particles that have reached the required particle size after grinding, accelerating their discharge between the grinding base and the grinding cone, thus improving overall grinding efficiency. Compared to existing simple grinding equipment, this invention can sieve the ground abrasive particles by introducing gas, and then heat and blow out the grinding mixture through the grinding cone, making full use of the gas and improving the overall sieving effect and grinding efficiency. Attached Figure Description

[0019] Figure 1 is a schematic diagram of the structure of the processing apparatus for preparing silicon-carbon anode materials for lithium batteries disclosed in this invention.

[0020] Figure 2 is a schematic diagram of the internal structure of the outer shell of the processing apparatus for preparing silicon-carbon anode material for lithium batteries disclosed in this invention;

[0021] Figure 3 is a schematic diagram of the combined structure of the fixed circular plate, gas supply pipe 1, air rod, filter cylinder and limiting cylinder disclosed in the processing apparatus for preparing silicon-carbon anode material for lithium battery of the present invention.

[0022] Figure 4 is a schematic diagram of the combined structure of electric slide rail, filter cylinder, guide plate and spiral plate of the processing device for preparing silicon-carbon anode material for lithium battery disclosed in this invention.

[0023] Figure 5 is a schematic diagram of the combined structure of the guide plate, spiral plate and elastic striking rod of the processing device for preparing silicon-carbon anode material for lithium battery disclosed in this invention.

[0024] Figure 6 is a cross-sectional view of the grinding cone disclosed in the processing apparatus for preparing silicon-carbon anode materials for lithium batteries of the present invention;

[0025] Figure 7 is a schematic diagram of the combined structure of the connecting round tube, connecting tube, gas supply tube II, air blowing tube and filter screen of the processing device for preparing silicon-carbon anode material for lithium battery disclosed in this invention.

[0026] Figure 8 is a schematic diagram of the internal structure of the temporary storage box of the processing apparatus for preparing silicon-carbon anode materials for lithium batteries disclosed in this invention.

[0027] The components in the diagram are labeled as follows: 1-Outer shell, 2-Grinding base, 3-Motor, 4-Grinding cone, 5-Feed pipe, 6-Discharge pipe, 7-Ventilation pipe, 201-Fixed circular plate, 202-Air supply pipe one, 203-Ventilation rod, 204-Electric slide rail, 205-Filter cartridge, 206-Limiting cylinder, 207-Guide plate, 208-Spiral plate, 211-Elastic striking rod, 220-Connecting circular pipe, 221-Connecting pipe, 222-Air supply pipe two, 223-Blowing pipe, 224-Filter screen, 301-Return pipe, 302-Pump, 303-Temporary storage box, 304-Discharge trough, 305-Buffer spring, 2001-Buffer groove, 2002-Channel, 20101-Discharge port, 20301-Blowing hole, 401-Cavity, 402-Air outlet. Detailed Implementation

[0028] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0029] Example 1

[0030] A processing apparatus for preparing silicon-carbon anode materials for lithium batteries, as shown in Figures 1-7, includes a shell 1, a grinding base 2, a motor 3, a grinding cone 4, a feed pipe 5, and a discharge pipe 6; the grinding base 2 is fixedly connected to the shell 1; the motor 3 is fixedly connected to the shell 1; the grinding cone 4 is rotatably connected to the shell 1, and the output shaft of the motor 3 is fixedly connected to the grinding cone 4; the feed pipe 5 is connected to the upper side of the shell 1; the discharge pipe 6 is connected to the bottom of the shell 1.

[0031] It also includes a vent pipe 7, a fixed circular plate 201, an air supply pipe 202, a vent rod 203, an electric slide rail 204, a filter cartridge 205, a limiting cylinder 206, a guide plate 207, and a spiral plate 208; the outer shell 1 is fixedly connected to the vent pipe 7, and the vent pipe 7 is connected to an external air supply mechanism; the outer shell 1 is fixedly connected to the fixed circular plate 201; the fixed circular plate 201 has six discharge ports 20101; the fixed circular plate 201 is fixedly connected to the limiting cylinder 206, and the upper side of the limiting cylinder 206 is fixedly connected to the bottom of the grinding base 2; the grinding base 2 is bolted to the electric slide rail 204; the electric slide rail 204 is slidably connected to a slider. The filter cartridge 205 is rotatably connected to the fixed circular plate 201, and the filter cartridge 205 is located in the middle of the limiting cylinder 206; the air rod 203 is fixedly connected to the middle of the fixed circular plate 201, and the air rod 203 is located in the middle of the filter cartridge 205; the air rod 203 has several air blowing holes 20301; the air pipe 7 is connected to the air supply pipe 202, and the air supply pipe 202 is connected to the air rod 203; the air rod 203 is fixedly connected to the guide plate 207; the inner wall of the filter cartridge 205 is fixedly connected to the spiral plate 208, which is set in an inclined shape with the inner side higher and the outer side lower, and the spiral plate 208 is located below the guide plate 207.

[0032] It also includes a guide plate 207 and a spiral plate 208; the air rod 203 is fixedly connected to the guide plate 207; the inner wall of the filter cartridge 205 is fixedly connected to the spiral plate 208, and the spiral plate 208 is located below the guide plate 207.

[0033] The spiral plate 208 is set in an inclined shape with the inner side higher and the outer side lower, and the air blowing hole 20301 is set to tilt downward. By setting the spiral plate 208 in an inclined shape, the abrasive falling on the spiral plate 208 is restricted, preventing it from falling directly out of the spiral plate 208 and reducing its air blowing screening effect.

[0034] It also includes elastic striking rods 211; ten elastic striking rods 211 arranged in a ring array are rotatably connected to the bottom of the grinding base 2 by a torsion spring, and the elastic striking rods 211 are in contact with the surface of the filter cartridge 205.

[0035] It also includes a connecting round pipe 220; the grinding cone 4 has a cavity 401; the upper side of the air rod 203 is connected to the connecting round pipe 220, the connecting round pipe 220 is rotatably connected to the grinding cone 4, and the connecting round pipe 220 is connected to the cavity 401.

[0036] The grinding cone 4 has several air outlets 402, which are inclined downwards. Air is blown between the grinding base 2 and the grinding cone 4 through the air outlets 402 to accelerate the downward movement of the mixed abrasive during grinding, and to blow the particles that meet the particle size standard after grinding to accelerate their discharge between the grinding base 2 and the grinding cone 4, thereby improving the overall grinding efficiency.

[0037] It also includes a filter screen 224; the grinding base 2 has a buffer groove 2001; the buffer groove 2001 has eight channels 2002; the filter screen 224 is fixed to the surface of the buffer groove 2001, and the grinding mixed abrasive can be initially screened through the filter screen 224 to reduce the pressure of the subsequent filter cartridge 205.

[0038] It also includes a connecting pipe 221, an air supply pipe 222, and an air blowing pipe 223; the air pipe 7 is connected to the connecting pipe 221; the connecting pipe 221 is connected to the air supply pipe 222, and the air supply pipe 222 is located at the buffer tank 2001; the air supply pipe 222 is connected to several air blowing pipes 223.

[0039] When grinding silicon and carbon materials, the materials to be ground are manually fed into the grinding base 2 and grinding cone 4 through the feed pipe 5. Then, the motor 3 is controlled to rotate the grinding cone 4, which crushes and grinds the mixed silicon and carbon materials between the grinding base 2 and grinding cone 4. For ease of writing, the mixed silicon and carbon materials will be referred to as mixed abrasive below. Since existing grinding equipment cannot directly grind these silicon and carbon materials into powder with the required particle size in one go, it usually requires... These silicon and carbon materials undergo multiple grinding processes. During this process, some silicon and carbon materials are ground into powder with the required particle size. Therefore, current grinding methods for silicon and carbon materials involve multiple grinding and sieving steps. Current sieving methods often use sieves to separate the ground abrasive mixture. However, during sieving with existing sieves, the abrasive mixture tends to accumulate on the sieve, leading to blockages and poor sieving efficiency, which can reduce the overall efficiency of silicon-carbon anode material preparation. Therefore, during the grinding process, it is crucial to control the external gas supply. The mechanism introduces gas from the vent pipe 7 into the gas supply pipe 202, which in turn introduces the gas into the venting rod 203. The gas is then blown out through the air outlet 20301 of the venting rod 203. When the mixed abrasive between the grinding base 2 and the grinding cone 4 is ground and falls from between them into the filter cartridge 205, gas is blown out through the air outlet 20301 to blow the fallen mixed abrasive onto the filter cartridge 205. The filter cartridge 205 then filters and separates the blown mixed abrasive. Compared to existing methods using sieves… The present invention uses a vertical filter cylinder 205 and air blowing holes 20301 to blow gas to screen the ground mixed abrasive. This effectively avoids accumulation and blockage, ensuring overall screening efficiency. The gas blows the abrasive particles that meet the size requirements out of the filter cylinder 205, while the larger abrasive particles remain in the filter cylinder 205. The blown abrasive particles are restricted by the limiting cylinder 206 and fall to the bottom of the outer shell 1 through the discharge port 20101 of the fixed circular plate 201. Subsequently, the ground and screened abrasive particles are collected manually through the discharge pipe 6.

[0040] Furthermore, considering that graphite is often used as the carbon material in the preparation of silicon-carbon anode materials, and that graphite has strong adsorption properties, the ground abrasive particles tend to adsorb onto each other. When the abrasive particles are blown onto the filter cartridge 205 for sieving using gas, it cannot be guaranteed that the abrasive particles adsorbed and clump together will be dispersed by the gas. This causes these clumps of abrasive particles to eventually fall and accumulate on the fixed circular plate 201 on the lower side of the filter cartridge 205, resulting in insufficient sieving of the mixed abrasive. Therefore, a spiral plate 208 is provided on the inner wall of the filter cartridge 205; grinding... When the mixed abrasive falls from between the grinding base 2 and the grinding cone 4, it first lands on the guide plate 207. Guided by the guide plate 207 and blown by the air blowing hole 20301, the mixed abrasive lands on the spiral plate 208 set on the inner wall of the filter cylinder 205. This causes the mixed abrasive to fall downward along the surface of the spiral plate 208. The spiral plate 208 increases the falling time of the mixed abrasive, allowing the gas blown out of the air blowing hole 20301 to fully blow the ground mixed abrasive, breaking up the abrasive particles and ensuring the screening effect.

[0041] Furthermore, while air blowing and sieving are performed at the air blowing port 20301, the electric slide rail 204 is controlled to drive the filter cartridge 205, the spiral plate 208, and other connected parts to rotate counterclockwise from top to bottom. The rotation of the spiral plate 208 lifts up the abrasive particles that have been sieved and accumulated on the fixed circular plate 201, so that these sieved abrasive particles are lifted up again for air blowing and sieving. This allows the agglomerated abrasive particles in these sieved abrasive particles to be sieved again. Through the rotation of the spiral plate 208, the abrasive particles can be repeatedly sieved, further ensuring that the sieving is thorough. In addition, the electric slide rail 204 drives... When the filter cartridge 205 rotates, the elastic striking rod 211 repeatedly contacts the filter cartridge 205, which can knock and vibrate the filter cartridge 205, shaking off the abrasive particles attached to the surface of the filter cartridge 205, preventing them from adhering to the surface of the filter cartridge 205 and causing the filter cartridge 205 to be blocked, thus affecting the screening effect of the filter cartridge 205. In addition, the spiral plate 208 is set in an inclined shape with the inner side higher and the outer side lower, and the air blowing hole 20301 is set to be inclined downward. By setting the spiral plate 208 in an inclined shape, the abrasive falling on the spiral plate 208 is restricted, preventing it from falling directly out of the spiral plate 208 and reducing its air blowing screening effect.

[0042] Meanwhile, since graphite is often used as a carbon material, and graphite easily absorbs moisture from the air during storage, it becomes damp. This dampness causes the abrasive mixture to adhere to the surface of the grinding base 2 or grinding cone 4 during grinding, hindering the discharge of the abrasive mixture and reducing grinding efficiency. Therefore, when the external gas supply mechanism introduces gas into the air supply rod 203 through the air supply pipe 7, the gas output by the external gas supply mechanism is a hot gas flow, and the hot gas flow simultaneously passes through the connecting circular pipe 220. The hot air inside the cavity 401 heats the grinding surface of the grinding cone 4, allowing the grinding cone 4 to simultaneously heat and dry the mixed abrasive during the grinding process. This effectively reduces the likelihood of adhesion and ensures that the mixed abrasive is discharged downwards normally. Furthermore, the hot air blown out through the air hole 20301 also heats and dries the ground abrasive particles. In conjunction with the electric slide rail 204 and the spiral plate 208, the spiral plate 208 increases the falling time of the mixed abrasive, ensuring the drying effect.

[0043] Furthermore, considering that after the mixed abrasive is heated and dried, it still tends to adhere to the surfaces of the grinding base 2 and the grinding cone 4 during the extrusion grinding process, resulting in a low efficiency in the discharge of the ground mixed abrasive particles and thus affecting the overall grinding efficiency, the grinding cone 4 is provided with an air outlet 402. When hot air is introduced into the cavity 401, the gas in the cavity 401 is blown out from the air outlet 402 along the gas flow, and blown downwards between the grinding base 2 and the grinding cone 4, thus expelling the hot air through the air outlet 402. Air is used to blow the mixed abrasive particles during grinding, accelerating their downward movement and blowing off any attached abrasive particles. Air is also used to blow away abrasive particles that meet the required particle size after grinding, accelerating their discharge between the grinding base 2 and the grinding cone 4, thus improving overall grinding efficiency. Compared to existing simple grinding equipment, this invention can sieve the ground abrasive particles by introducing gas, and then heat and blow the mixed abrasive particles out through the grinding cone 4, making full use of the gas and improving the overall sieving effect and grinding efficiency.

[0044] Furthermore, to ensure thorough grinding of the mixed abrasive, the grinding path between the grinding base 2 and the grinding cone 4 is relatively long. A buffer groove 2001 with a channel 2002 is provided on the grinding base 2, and a filter screen 224 is installed in the buffer groove 2001. When the mixed abrasive being ground between the grinding base 2 and the grinding cone 4 moves downwards and falls onto the buffer groove 2001, the filter screen 224 performs preliminary screening of the ground mixed abrasive, thereby relieving the screening pressure on the subsequent filter cartridge 205. After grinding, mixed abrasive particles that meet the particle size requirements can pass through the filter screen 224 and fall downwards from the channel 2002. The material falls through the discharge port 20101 and lands at the bottom of the outer shell 1. At the same time, when gas is introduced into the vent pipe 7, the gas is simultaneously introduced into the connecting pipe 221 and the air supply pipe 222 through the vent pipe 7, and blown out from the blowing pipe 223. The blowing pipe 223 can blow the surface of the filter screen 224, blowing the mixed abrasive falling on its surface downward to prevent it from staying on the filter screen 224. The mixed abrasive being ground will also block the gas blown out of the air outlet 402. The blowing pipe 223 can blow the lower part between the grinding base 2 and the grinding cone 4, improving the discharge efficiency of the mixed abrasive during grinding.

[0045] Furthermore, when the grinding operation is completed, a higher pressure gas is introduced into the air pipe 7 by controlling the external air supply mechanism, and blown out from the air blowing hole 20301 and the air outlet 402, thereby cleaning the space between the grinding base 2 and the grinding cone 4 as well as the filter cartridge 205 by blowing out the residual mixed abrasive, reducing the difficulty of subsequent cleaning.

[0046] Example 2

[0047] Based on Embodiment 1, as shown in Figures 2-3 and 8, a reflux unit is also included. The reflux unit includes a reflux pipe 301, a pump 302, a temporary storage box 303, and a discharge trough 304. The pump 302 is fixedly connected to the outer shell 1. The pump 302 is connected to the reflux pipe 301, and the lower end of the reflux pipe 301 passes through the fixed circular plate 201 and communicates with the inside of the filter cartridge 205. The upper end of the reflux pipe 301 is connected to the temporary storage box 303, and the temporary storage box 303 is fixedly connected to the outer shell 1. The temporary storage box 303 is connected to the discharge trough 304, and the discharge trough 304 is located above the grinding base 2.

[0048] It also includes a buffer spring 305; the buffer spring 305 is fixedly connected inside the temporary storage box 303.

[0049] Based on the above embodiment 1, the abrasive particles accumulated on the fixed circular plate 201 on the lower side of the filter cartridge 205 are repeatedly blown and screened. The return pipe 301 is opened by timed control, so that the larger abrasive particles after screening fall into the return pipe 301. Subsequently, the pump 302 is controlled to work, and the abrasive particles collected in the return pipe 301 are transported to the temporary storage box 303 and discharged from the discharge chute 304. The larger abrasive particles are discharged again between the grinding base 2 and the grinding cone 4 for subsequent re-grinding to ensure thorough grinding. In addition, the temporary storage box 303 is equipped with a buffer spring 305. When the return pipe 301 transports the abrasive particles to the temporary storage box 303, the buffer spring 305 can intercept and buffer the transported abrasive particles, preventing these returned abrasive particles from being transported at a high speed on the grinding base 2 and the grinding cone 4 and splashing everywhere.

[0050] Although this disclosure has been described with respect to only a limited number of embodiments, those skilled in the art who benefit from this disclosure will understand that various other embodiments can be devised without departing from the scope of the invention. Therefore, the scope of the invention should be limited only by the appended claims.

Claims

1. A processing apparatus for preparing silicon-carbon anode material for lithium batteries, comprising a shell (1), a grinding base (2), a motor (3), a grinding cone (4), a feed pipe (5), and a discharge pipe (6); the grinding base (2) is fixedly connected to the shell (1); the motor (3) is fixedly connected to the shell (1); the grinding cone (4) is rotatably connected to the shell (1), and the output shaft of the motor (3) is fixedly connected to the grinding cone (4); the feed pipe (5) is connected to the shell (1); the discharge pipe (6) is connected to the shell (1); characterized in that, It also includes a vent pipe (7), a fixed circular plate (201), an air supply pipe (202), a vent rod (203), an electric slide rail (204), a filter cartridge (205), a limiting cylinder (206), a guide plate (207), and a spiral plate (208); the outer shell (1) is fixedly connected to the vent pipe (7), and the vent pipe (7) is connected to an external air supply mechanism; the outer shell (1) is fixedly connected to the fixed circular plate (201); the fixed circular plate (201) has several discharge ports (20101); the fixed circular plate (201) is fixedly connected to the limiting cylinder (206), and the upper side of the limiting cylinder (206) is fixedly connected to the bottom of the grinding base (2); the grinding base (2) is detachably connected to the electric slide rail (204); the electric slide rail (204) slides through a slider. A filter cartridge (205) is connected to a fixed circular plate (201), and the filter cartridge (205) is located in the middle of the limiting cylinder (206). A ventilation rod (203) is fixedly connected to the fixed circular plate (201), and the ventilation rod (203) is located in the middle of the filter cartridge (205). The ventilation rod (203) has several air holes (20301). The ventilation pipe (7) is connected to the first air supply pipe (202), and the first air supply pipe (202) is connected to the ventilation rod (203). A guide plate (207) is fixedly connected to the ventilation rod (203). A spiral plate (208) is fixedly connected to the inner wall of the filter cartridge (205). The spiral plate (208) is set to be inclined with the inner side higher and the outer side lower, and the spiral plate (208) is located below the guide plate (207).

2. The processing apparatus for preparing silicon-carbon anode material for lithium batteries according to claim 1, characterized in that, It also includes elastic striking rods (211); the bottom of the grinding base (2) is rotatably connected to several elastic striking rods (211) by a torsion spring, and the elastic striking rods (211) are in contact with the surface of the filter cartridge (205).

3. The processing apparatus for preparing silicon-carbon anode material for lithium batteries according to claim 1, characterized in that, It also includes a connecting round tube (220); the grinding cone (4) has a cavity (401); the air rod (203) is connected to the connecting round tube (220), the connecting round tube (220) is rotatably connected to the grinding cone (4), and the connecting round tube (220) is connected to the cavity (401).

4. The processing apparatus for preparing silicon-carbon anode material for lithium batteries according to claim 3, characterized in that, The grinding cone (4) has several air outlets (402), and the air outlets (402) are set at an angle downward.

5. A processing apparatus for preparing silicon-carbon anode material for lithium batteries according to claim 1, characterized in that, It also includes a filter screen (224); the grinding base (2) has a buffer groove (2001); the buffer groove (2001) has several channels (2002); the filter screen (224) is fixed to the surface of the buffer groove (2001).

6. A processing apparatus for preparing silicon-carbon anode material for lithium batteries according to claim 5, characterized in that, It also includes a connecting pipe (221), an air supply pipe II (222) and an air blowing pipe (223); the air pipe (7) is connected to the connecting pipe (221); the connecting pipe (221) is connected to the air supply pipe II (222), and the air supply pipe II (222) is located at the buffer tank (2001); the air supply pipe II (222) is connected to several air blowing pipes (223).

7. A processing apparatus for preparing silicon-carbon anode material for lithium batteries according to claim 1, characterized in that, It also includes a reflux unit, and the outer shell (1) is connected to a reflux unit for refluxing abrasive particles with excessive particle size; the reflux unit includes a reflux pipe (301), a pump (302), a temporary storage box (303) and a discharge trough (304); the outer shell (1) is fixedly connected to the pump (302); the pump (302) is connected to the reflux pipe (301), and the lower end of the reflux pipe (301) passes through the fixed circular plate (201) and is connected to the inside of the filter cartridge (205); the upper end of the reflux pipe (301) is connected to the temporary storage box (303), and the temporary storage box (303) is fixedly connected to the outer shell (1); the temporary storage box (303) is connected to the discharge trough (304), and the discharge trough (304) is located above the grinding base (2).

8. A processing apparatus for preparing silicon-carbon anode material for lithium batteries according to claim 7, characterized in that, It also includes a buffer spring (305); the temporary storage box (303) has a buffer spring (305) fixed inside for buffering the abrasive backflow.

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