CN111992324A

CN111992324A - Graphite powder multistage grinding equipment for new energy battery production

Info

Publication number: CN111992324A
Application number: CN202010852801.6A
Authority: CN
Inventors: 李俊强; 杨瑞
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-22
Filing date: 2020-08-22
Publication date: 2020-11-27

Abstract

The invention discloses graphite powder multistage grinding equipment for new energy battery production, and relates to the technical field of graphite powder multistage grinding; to solve the problem that the surface of the graphite before grinding contains impurities; the device specifically comprises a pulverizer; the outer wall of one side of the pulverizer is connected with a pulverizing motor through a bolt; the inner walls of the two sides of the pulverizer are fixedly connected with pulverizing components; the outer wall of the bottom end of the pulverizer is connected with a cutting box through a bolt; the outer wall of the bottom end of the cutting box is connected with a conical pipe through a bolt; the outer wall of the bottom end of the conical pipe is connected with a first electric valve through a bolt; the outer wall of the bottom end of the first electric valve is connected with a drying box through a bolt; the inner wall of one side of the drying box is fixedly connected with a filter screen through screws. According to the invention, the conical tube and the second electric valve are arranged, water follows graphite during surface treatment of graphite particles, and the water can play a role in cleaning the graphite surface and cooling the graphite in the crushing and cutting processes, so that oxidation reaction of the graphite caused by high temperature is avoided.

Description

Graphite powder multistage grinding equipment for new energy battery production

Technical Field

The invention relates to the technical field of road and bridge repair, in particular to a multistage grinding device for graphite powder for new energy battery production.

Background

With scientific progress and social development, more and more new energy resources are developed, wherein a graphene battery as a new energy resource is a new development point of the battery industry, and graphite powder after grinding is different in size and texture due to different shapes and sizes before being ground, so that a multistage grinding device for graphite powder for producing new energy batteries is urgently needed.

Through retrieval, chinese patent application No. CN201810687771.0 discloses a graphite powder multistage grinding device for new energy battery production, which comprises a hydraulic baffle, a four-stage grinding chamber, a spiral rotating rod, a first motor, an L-shaped supporting arm, a device cavity, a cylinder, a gas rod, a second motor, a first motor rotating shaft, a first belt, a first conveyor belt, and the like. The graphite powder multistage grinding equipment for new energy battery production in the patent has the following defects: graphite powder multistage grinding equipment does not carry out cleaning treatment to graphite before the grinding, leads to the impurity on graphite surface and graphite powder to mix together in grinding process, influences the quality reduction of the new forms of energy battery of follow-up making by graphite powder, influences the problem of product quality.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides graphite powder multistage grinding equipment for producing new energy batteries.

In order to achieve the purpose, the invention adopts the following technical scheme:

a graphite powder multistage grinding device for new energy battery production comprises a pulverizer; the outer wall of one side of the pulverizer is connected with a pulverizing motor through a bolt; the inner walls of the two sides of the pulverizer are fixedly connected with pulverizing components; the outer wall of the bottom end of the pulverizer is connected with a cutting box through a bolt; the outer wall of the bottom end of the cutting box is connected with a conical pipe through a bolt; the outer wall of the bottom end of the conical pipe is connected with a first electric valve through a bolt; the outer wall of the bottom end of the first electric valve is connected with a drying box through a bolt; the inner wall of one side of the drying box is fixedly connected with a filter screen through a screw; the outer wall of one side of the drying box is connected with a first electric push rod through a bolt; the outer wall of the top end of the drying box is connected with a vacuum manufacturing machine through a bolt; the outer wall of the bottom end of the drying box is connected with a second electric valve through a conical pipe; the outer wall of one side of the second electric valve is connected with a waste liquid collecting box through a bolt; the outer wall of the other side of the drying box is connected with a grinding box through a bolt; the inner wall of one side of the grinding box is connected with a graphite powder collecting box through a bolt; a control unit is arranged in the drying box; the first electric valve, the second electric valve, the vacuum manufacturing machine, the first electric push rod and the crushing motor are all electrically connected with the internal control unit.

As a further scheme of the invention: the inner walls of two sides of the cutting box are rotatably connected with a rotating shaft; the outer wall of the periphery of the rotating shaft is fixedly connected with cutting tools which are uniformly distributed; the outer wall all around of pivot fixedly connected with evenly distributed's impeller.

As a further scheme of the invention: the inner wall of one side of the drying box is fixedly connected with a supporting column through a screw; the inner wall of one end of the support column is fixedly connected with a support rod through a screw; the outer wall of the top end of the support rod is rotatably connected with a ball; the peripheral outer wall of the ball is fixedly connected with a rotating cover; holes with different sizes are processed on the inner wall of one side of the rotary cover.

As a further scheme of the invention: push plates are arranged on the inner walls of the two sides of the drying box; a connecting rod is fixedly connected between the two push plates; the outer wall of one side of the push plate is connected to the outer wall of one side of the output shaft of the first electric push rod through a bolt.

As a further scheme of the invention: a bearing frame is connected to the inner wall of one side of the drying box in a sliding manner; the bearing frame is made of a magnet; the outer wall of the top end of the bearing frame is provided with filter holes which are uniformly distributed.

As a further scheme of the invention: the outer wall of one side of the drying box is connected with a second electric push rod through a bolt; the outer wall of one side of the output shaft of the second electric push rod is connected with an annular magnet through a bolt; the second electric push rod is electrically connected with the internal control unit.

As a further scheme of the invention: the inner wall of the bottom end of the grinding box is provided with a conveyor belt; the outer wall of one side of the grinding box is connected with an inclined plate through a bolt; a plurality of fixed grinding rollers are arranged above the inclined plate; the diameter of the fixed grinding roller increases in turn.

As a further scheme of the invention: guide rails are processed on the inner walls of the two sides of the grinding box; the inner wall of one side of the guide rail is connected with a sliding block in a sliding way; the outer wall of one side of the sliding block is connected with a rotating motor through a bolt; the outer wall of one side of an output shaft of the rotating motor is connected with a grinding rotating roller through a coupler; the conveying belt and the rotating motor are electrically connected with the internal control unit.

As a further scheme of the invention: the inner wall of the top end of the grinding box is fixedly connected with a partition plate through a screw; the inner wall of one side of the clapboard is connected with an exhaust fan through a bolt; the inner wall of the top end of the grinding box is connected with an exhaust fan through a bolt; the wind power of the exhaust fan is less than that of the exhaust fan; the exhaust fan and the exhaust fan are electrically connected with the internal control unit.

The invention has the beneficial effects that:

1. according to the invention, the conical pipe, the first electric valve, the second electric valve and the waste liquid recovery box are arranged, the surface treatment is carried out before the graphite particles are ground, water follows graphite in the surface treatment process, the water can play a role in cleaning the surface of the graphite and cooling the graphite in the crushing and cutting processes, the oxidation reaction of the graphite caused by high temperature is avoided, and meanwhile, the crushing and cutting progress of the graphite is accelerated under the drive of the water, and the graphite treatment speed is accelerated.

2. According to the invention, the drying box is arranged, the vacuum manufacturing machine is arranged on the drying box, the graphite subjected to solid-liquid separation can be subjected to reduced pressure drying in a closed space, the temperature required by reduced pressure drying is low, the graphite particles are loose and easy to crush, subsequent grinding is facilitated, the influence of air on the graphite can be reduced by reduced pressure drying, the graphite is prevented from being corroded, and the quality of the graphite powder after subsequent grinding is ensured.

3. According to the invention, the support column, the support rod, the rotary cover with holes of different sizes and the ball are arranged, when water flow and graphite particles enter the drying box through the first electric valve, the graphite particles and the water flow strike the rotary cover, the rotary cover shakes and rotates under the action of the ball, at the moment, the graphite particles are splashed on the filter screen in the drying box through the holes in the rotary cover or rotate, the distribution of the graphite particles is dispersed, the effect of decompression drying is improved, meanwhile, the shaking of the rotary cover prevents the graphite particles from being clamped in the holes in the rotary cover, and the practicability of the device is improved.

4. According to the invention, the bearing frame, the filter hole plug, the annular magnet and the second electric push rod are arranged, after drying is completed, the second electric push rod runs, at the moment, the annular magnet moves upwards, the bearing frame which is mutually adsorbed with the annular magnet also moves upwards, the filter hole plug on the bearing frame plugs the filter hole on the filter screen, and the graphite particles clamped in the filter hole are ejected out, so that the graphite particles are conveniently and thoroughly pushed into the grinding box from the drying box.

5. According to the invention, the conveying belt, the inclined plate, the three fixed grinding rollers with the diameters sequentially increased, the rotating motor and the grinding rotary roller are arranged in the grinding box, graphite particles enter the grinding box and reach the inclined plate, the graphite particles are ground into uniform graphite powder through the three fixed grinding rollers with the diameters sequentially increased, the grinding rotary roller on the rotating motor is contacted with the bottom of the grinding box when rotating, the sliding block rises along the guide rail under the action of friction force, and the grinding rotary roller further grinds the graphite powder, so that the quality of the graphite powder is ensured.

Drawings

FIG. 1 is a schematic view of the subjective structure of a multistage grinding device for graphite powder for new energy battery production according to the present invention;

FIG. 2 is a schematic diagram of the internal structure of a cutting box of the multistage grinding equipment for graphite powder for new energy battery production, which is provided by the invention;

FIG. 3 is a schematic view of the internal structure of a drying box of a multistage grinding device for graphite powder for new energy battery production according to the present invention;

FIG. 4 is a schematic diagram of the internal structure of a grinding box of the multistage grinding equipment for graphite powder for new energy battery production according to the present invention;

FIG. 5 is a schematic view of the internal structure of a rotary cover of a multistage grinding device for graphite powder for new energy battery production according to the present invention;

FIG. 6 is a schematic structural view of a bearing frame of the multistage grinding equipment for graphite powder for new energy battery production according to the present invention;

fig. 7 is a schematic circuit flow diagram of a multistage grinding device for graphite powder for new energy battery production according to the present invention.

In the figure: 1-crusher, 2-cutting box, 3-conical tube, 4-first electric valve, 5-drying box, 6-graphite powder collecting box, 7-grinding box, 8-waste liquid collecting box, 9-second electric valve, 10-first electric push rod, 11-grinding motor, 12-grinding component, 13-rotating shaft, 14-cutting tool, 15-connecting rod, 16-filter screen, 17-second electric push rod, 18-annular magnet, 19-supporting column, 20-rotating cover, 21-push plate, 22-guide rail, 23-rotating motor, 24-grinding rotating roller, 25-conveying belt, 26-fixed grinding roller, 27-partition plate, 28-exhaust fan, 29-exhaust fan, 30-ball, 31-support bar, 32-loading frame, 33-filter hole plugging, 34-vacuum making machine, 35-impeller and 36-inclined plate.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

A multistage grinding device for graphite powder for new energy battery production is disclosed, as shown in figure 1, figure 3 and figure 7, comprising a pulverizer 1; the outer wall of one side of the pulverizer 1 is connected with a pulverizing motor 11 through a bolt; the inner walls of two sides of the pulverizer 1 are fixedly connected with a pulverizing component 12; the outer wall of the bottom end of the pulverizer 1 is connected with a cutting box 2 through a bolt; the outer wall of the bottom end of the cutting box 2 is connected with a conical pipe 3 through a bolt; the outer wall of the bottom end of the conical pipe 3 is connected with a first electric valve 4 through a bolt; the outer wall of the bottom end of the first electric valve 4 is connected with a drying box 5 through a bolt; a filter screen 16 is fixedly connected to the inner wall of one side of the drying box 5 through screws; the outer wall of one side of the drying box 5 is connected with a first electric push rod 10 through a bolt; the outer wall of the top end of the drying box 5 is connected with a vacuum making machine 34 through bolts; the outer wall of the bottom end of the drying box 5 is connected with a second electric valve 9 through a conical pipe 3; the outer wall of one side of the second electric valve 9 is connected with a waste liquid collecting box 8 through a bolt; the outer wall of the other side of the drying box 5 is connected with a grinding box 7 through a bolt; the inner wall of one side of the grinding box 7 is connected with a graphite powder collecting box 6 through a bolt; a control unit is arranged in the drying box 5; the first electric valve 4, the second electric valve 9, the vacuum manufacturing machine 34, the first electric push rod 10 and the crushing motor 11 are electrically connected with the internal control unit; pouring water and graphite into a pulverizer 1, operating a pulverizing motor 11, pulverizing graphite by a pulverizing assembly 12, cutting the pulverized graphite and water into graphite particles through a cutting box 2, then opening a first electric valve 4, enabling the water and the graphite particles to reach a drying box 5 through a conical tube 3 and the first electric valve 4, performing solid-liquid separation through a filter screen 16 in the drying box 5, finally enabling the water to reach a waste liquid collecting box 8, enabling the water to play a role in cleaning the graphite surface and cooling the graphite in the pulverizing process, avoiding oxidation reaction of the graphite due to high temperature, then closing the first electric valve 4 and a second electric valve 9 to manufacture a closed space for the drying box 5, operating a vacuum manufacturing machine 34 to perform reduced pressure drying on the graphite particles in the drying box 5, wherein the reduced pressure drying is low in temperature during drying, the graphite cannot undergo oxidation reaction, and simultaneously the reduced pressure drying can enable the graphite particles to be loose and easy to pulverize, convenient subsequent grinding improves the quality of product, and after the drying is accomplished, the graphite grain propelling movement after will drying is ground the case 7 by first electric putter 10 in, and the graphite powder after the grinding is finally retrieved in graphite powder collection box 6.

In order to make the graphite cut into graphite particles in the cutting box 2 uniform in size; as shown in fig. 2, the inner walls of the two sides of the cutting box 2 are rotatably connected with a rotating shaft 13; the outer wall of the periphery of the rotating shaft 13 is fixedly connected with cutting tools 14 which are uniformly distributed; the outer wall of the periphery of the rotating shaft 13 is fixedly connected with impellers 35 which are uniformly distributed; when water and graphite fall into cutting box 2, impeller 35 is through the impact of rivers, and pivot 13 is rotatory, and the cutting tool 14 that the equidistance set up cuts the graphite after smashing, becomes graphite grain with graphite, and subsequent drying and grinding of being convenient for improve the quality of graphite powder.

In order to ensure the effectiveness of the drying effect; as shown in fig. 3 and 5, a support column 19 is fixedly connected to the inner wall of one side of the drying box 5 through a screw; the inner wall of one end of the supporting column 19 is fixedly connected with a supporting rod 31 through a screw; the outer wall of the top end of the support rod 31 is rotatably connected with a ball 30; the outer wall of the periphery of the ball 30 is fixedly connected with a rotary cover 20; holes with different sizes are processed on the inner wall of one side of the rotary cover 20; when rivers and graphite grain entered into first electric valve 4 and got into drying cabinet 5, rotatory lid 20 has been beaten to graphite grain and rivers, under the effect of ball 30, rotatory lid 20 rocks and is rotatory, the graphite grain splashes on filter screen 16 in drying cabinet 5 through the hole on the rotatory lid 20 or rotation this moment, and the graphite grain distributes comparatively dispersedly, promote the dry effect of decompression, rocking of rotatory lid 20 prevents that the graphite grain card is in the hole on rotatory lid 20 simultaneously, the practicality of device is improved.

In order to push the graphite particles from the drying box 5 into the grinding box 7; as shown in fig. 3, push plates 21 are arranged on the inner walls of the two sides of the drying box 5; a connecting rod 15 is fixedly connected between the two push plates 21; the outer wall of one side of the push plate 21 is connected with the outer wall of one side of the output shaft of the first electric push rod 10 through a bolt; the sealing performance of the drying box 5 is ensured by the two push plates 21 and the connecting rod 15, and the graphite particles can be pushed into the grinding box 7 from the drying box 5.

In order to prevent the graphite particles from being stuck on the filter screen 16 in the pushing process; as shown in fig. 6 and 7, a bearing frame 32 is slidably connected to an inner wall of one side of the drying box 5; the bearing frame 32 is made of a magnet; the outer wall of the top end of the bearing frame 32 is provided with evenly distributed filter hole plugs 33; the outer wall of one side of the drying box 5 is connected with a second electric push rod 17 through a bolt; the outer wall of one side of the output shaft of the second electric push rod 17 is connected with an annular magnet 18 through a bolt; the second electric push rod 17 is electrically connected with the internal control unit; after the drying is completed, the second electric push rod 17 is operated, at this time, the ring magnet 18 moves upwards, the bearing frame 32 mutually attracted with the ring magnet 18 also moves upwards, the filter holes on the filter screen 16 are blocked by the filter hole blocking members 33 on the bearing frame 32, and the graphite particles clamped in the filter holes are ejected out, so that the graphite particles are conveniently and thoroughly pushed into the grinding box 7 from the drying box 5.

In order to grind the graphite particles; as shown in fig. 4 and 7, a conveyor belt 25 is arranged on the inner wall of the bottom end of the grinding box 7; the outer wall of one side of the grinding box 7 is connected with an inclined plate 36 through a bolt; a plurality of fixed grinding rollers 26 are provided above the inclined plate 36; the fixed grinding rollers 26 are successively larger in diameter; guide rails 22 are processed on the inner walls of the two sides of the grinding box 7; the inner wall of one side of the guide rail 22 is connected with a slide block in a sliding way; the outer wall of one side of the sliding block is connected with a rotating motor 23 through a bolt; the outer wall of one side of an output shaft of the rotating motor 23 is connected with a grinding rotating roller 24 through a coupler; the conveyor belt 25 and the rotating motor 23 are electrically connected with the internal control unit; the number of the fixed grinding rollers 26 preferred in the present invention is three; graphite grain gets into and grinds on reaching the hang plate 35 in the case 7, through the fixed grinding roller 26 that three diameter increases in proper order, grind graphite grain into even graphite powder, convey grinding case 7 bottom through conveyer belt 25, grinding on the rotating electrical machines 23 changes roller 24 and the bottom contact of grinding case 7 when rotating, under the effect of frictional force, the slider rises along guide rail 22, grinding changes roller 24 and further grinds graphite powder, guarantees the quality of graphite powder.

In order to ensure the quality of the recovered graphite powder; as shown in fig. 4 and 7, a partition plate 27 is fixedly connected to the inner wall of the top end of the grinding box 7 through a screw; the inner wall of one side of the clapboard 27 is connected with an exhaust fan 28 through a bolt; the inner wall of the top end of the grinding box 7 is connected with an exhaust fan 29 through a bolt; the wind power of the exhaust fan 29 is smaller than that of the exhaust fan 28; the exhaust fan 29 and the exhaust fan 28 are both electrically connected with the internal control unit; the grinding box 7 is divided into two parts by the partition plate 27, unqualified graphite powder is prevented from being recovered, the exhaust fan 29 and the graphite powder recovery box 6 are placed above the grinding box, the quality of the recovered graphite powder can be ensured as long as the wind speed of the exhaust fan 29 is limited, and the wind power of the exhaust fan 28 is greater than that of the exhaust fan 29, so that the graphite powder cannot enter the exhaust fan 29, and the service life of a product is prolonged.

When the embodiment is used, during use, power supplies of various electric equipment are turned on, water and graphite are poured into the pulverizer 1, the pulverizing motor 11 operates, the pulverizing assembly 12 pulverizes the graphite, the pulverized graphite and water are cut into graphite particles through the cutting box 2, then the first electric valve 4 is opened, the water and the graphite particles pass through the conical pipe 3 and the first electric valve 4 to reach the drying box 5, solid-liquid separation is firstly carried out through the filter screen 16 in the drying box 5, the water finally reaches the waste liquid collecting box 8, the water plays a role in cleaning the graphite surface and cools the graphite in the pulverizing process, the high temperature is prevented from causing oxidation reaction of the graphite, then the first electric valve 4 and the second electric valve 9 are closed to form a closed space for the drying box 5, the vacuum maker 34 operates to carry out reduced pressure drying on the graphite particles in the drying box 5, the temperature of the reduced pressure drying is low during drying, graphite can not generate oxidation reaction, meanwhile, the graphite particles are loose and easy to crush due to decompression drying, subsequent grinding is convenient, the quality of products is improved, after drying is completed, dried graphite particles are pushed into a grinding box 7 through a first electric push rod 10, the ground graphite powder is finally recovered in a graphite powder collecting box 6, when water and graphite fall into a cutting box 2, an impeller 35 is impacted by water flow, a rotating shaft 13 rotates, a cutting tool 14 arranged at equal intervals cuts the crushed graphite to change the graphite into the graphite particles, subsequent drying and grinding are convenient, the quality of the graphite powder is improved, when the water flow and the graphite particles enter a drying box 5 through a first electric valve 4, the graphite particles and the water flow strike a rotating cover 20, under the action of balls 30, the rotating cover 20 shakes and rotates, at the moment, the graphite particles splash on a filter screen 16 in the drying box 5 through holes in the rotating cover 20 or rotate, and the graphite particles are distributed more dispersedly, the effect of decompression drying is improved, meanwhile, the shaking of the rotary cover 20 prevents the graphite particles from being blocked in the holes on the rotary cover 20, the practicability of the device is improved, the sealing performance of the drying box 5 is ensured through two push plates 21 and a connecting rod 15, the graphite particles can be pushed into the grinding box 7 from the drying box 5, after the drying is finished, the second electric push rod 17 runs, at the moment, the annular magnet 18 moves upwards, the bearing frame 32 mutually adsorbed with the annular magnet 18 also moves upwards, the filtering hole blockage 33 on the bearing frame 32 blocks the filtering holes on the filtering net 16, and the graphite particles blocked in the filtering holes are ejected out, so that the graphite particles are conveniently and thoroughly pushed into the grinding box 7 from the drying box 5, the graphite particles enter the grinding box 7 to reach the inclined plate 35, the graphite particles are ground into uniform graphite powder through three fixed grinding rollers 26 with successively increased diameters, convey to grinding box 7 bottom through conveyer belt 25, grinding on the rotating electrical machines 23 changes the roller 24 and contacts with the bottom of grinding box 7 when rotating, under the effect of friction force, the slider rises along guide rail 22, grinding changes roller 24 and further grinds graphite powder, guarantee the quality of graphite powder, will grind box 7 and divide into two parts through baffle 27, prevent that unqualified graphite powder from being retrieved, place suction fan 29 and graphite powder recovery box 6 above, as long as the wind speed of restriction suction fan 29, can guarantee the quality of graphite powder retrieved, the wind-force of exhaust fan 28 is greater than suction fan 29's wind-force, make graphite powder can not enter into suction fan 29, the life-span of extension product.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The multistage grinding equipment for the graphite powder for producing the new energy battery comprises a grinder (1) and is characterized in that the outer wall of one side of the grinder (1) is connected with a grinding motor (11) through a bolt; the inner walls of two sides of the pulverizer (1) are fixedly connected with a pulverizing component (12); the outer wall of the bottom end of the pulverizer (1) is connected with a cutting box (2) through a bolt; the outer wall of the bottom end of the cutting box (2) is connected with a conical pipe (3) through a bolt; the outer wall of the bottom end of the conical pipe (3) is connected with a first electric valve (4) through a bolt; the outer wall of the bottom end of the first electric valve (4) is connected with a drying box (5) through a bolt; a filter screen (16) is fixedly connected to the inner wall of one side of the drying box (5) through screws; the outer wall of one side of the drying box (5) is connected with a first electric push rod (10) through a bolt; the outer wall of the top end of the drying box (5) is connected with a vacuum making machine (34) through bolts; the outer wall of the bottom end of the drying box (5) is connected with a second electric valve (9) through a conical pipe (3); the outer wall of one side of the second electric valve (9) is connected with a waste liquid collecting box (8) through a bolt; the outer wall of the other side of the drying box (5) is connected with a grinding box (7) through a bolt; the inner wall of one side of the grinding box (7) is connected with a graphite powder collecting box (6) through a bolt; a control unit is arranged in the drying box (5); the first electric valve (4), the second electric valve (9), the vacuum manufacturing machine (34), the first electric push rod (10) and the crushing motor (11) are electrically connected with the internal control unit.

2. The multistage grinding equipment for the graphite powder for the new energy battery production according to claim 1, wherein the inner walls of two sides of the cutting box (2) are rotatably connected with a rotating shaft (13); the outer wall of the periphery of the rotating shaft (13) is fixedly connected with cutting tools (14) which are uniformly distributed; the outer wall around the rotating shaft (13) is fixedly connected with impellers (35) which are uniformly distributed.

3. The multistage grinding equipment for the graphite powder for the new energy battery production according to claim 2, wherein a support column (19) is fixedly connected to the inner wall of one side of the drying box (5) through a screw; the inner wall of one end of the supporting column (19) is fixedly connected with a supporting rod (31) through a screw; the outer wall of the top end of the support rod (31) is rotatably connected with a ball (30); the peripheral outer wall of the ball (30) is fixedly connected with a rotary cover (20); holes with different sizes are processed on the inner wall of one side of the rotary cover (20).

4. The multistage grinding equipment for the graphite powder for the new energy battery production according to claim 3, wherein push plates (21) are arranged on the inner walls of the two sides of the drying box (5); a connecting rod (15) is fixedly connected between the two push plates (21); the outer wall of one side of the push plate (21) is connected to the outer wall of one side of the output shaft of the first electric push rod (10) through a bolt.

5. The multistage grinding equipment for the graphite powder for the new energy battery production according to claim 4, wherein a bearing frame (32) is connected to the inner wall of one side of the drying box (5) in a sliding manner; the bearing frame (32) is made of a magnet; the outer wall of the top end of the bearing frame (32) is provided with evenly distributed filter hole plugs (33).

6. The multistage grinding equipment for the graphite powder for the new energy battery production according to claim 5, wherein a second electric push rod (17) is connected to the outer wall of one side of the drying box (5) through a bolt; the outer wall of one side of an output shaft of the second electric push rod (17) is connected with an annular magnet (18) through a bolt; the second electric push rod (17) is electrically connected with the internal control unit.

7. The multistage grinding equipment for graphite powder for new energy battery production according to claim 6, characterized in that the inner wall of the bottom end of the grinding box (7) is provided with a conveyor belt (25); the outer wall of one side of the grinding box (7) is connected with an inclined plate (36) through a bolt; a plurality of fixed grinding rollers (26) are arranged above the inclined plate (36); the fixed grinding rollers (26) are successively increased in diameter.

8. The multistage grinding device for the graphite powder for the production of new energy batteries according to claim 7, characterized in that guide rails (22) are processed on the inner walls of the two sides of the grinding box (7); the inner wall of one side of the guide rail (22) is connected with a sliding block in a sliding way; the outer wall of one side of the sliding block is connected with a rotating motor (23) through a bolt; the outer wall of one side of an output shaft of the rotating motor (23) is connected with a grinding rotating roller (24) through a coupling; the conveyor belt (25) and the rotating motor (23) are electrically connected with the internal control unit.

9. The multistage grinding device for the graphite powder for the production of new energy batteries according to claim 8, characterized in that the inner wall of the top end of the grinding box (7) is fixedly connected with a partition plate (27) through a screw; an exhaust fan (28) is connected to the inner wall of one side of the partition plate (27) through bolts; the inner wall of the top end of the grinding box (7) is connected with an exhaust fan (29) through a bolt; the wind power of the exhaust fan (28) is less than that of the exhaust fan (29); the exhaust fan (29) and the exhaust fan (28) are both electrically connected with the internal control unit.