A purification and separation device and method for graphite anode materials for lithium batteries

Abstract

This application discloses a purification and separation device and method for graphite anode materials in lithium batteries, belonging to the field of graphite extraction technology. It includes a flotation tank with a collection tank fixedly mounted on one side, and a notch between the flotation tank and the collection tank; two flotation plates, both rotatably mounted on top of the collection tank, with the height of both flotation plates exceeding the notch; and a cleaning mechanism located on top of the two flotation plates. The cleaning mechanism includes a spray pipe for cleaning the two flotation plates. Because this application employs a cleaning mechanism that sprays cleanliness onto the top of the flotation plates, it prevents graphite foam residue from remaining on the flotation plates and prevents plate deformation. Therefore, it effectively solves the problem of flotation plates being difficult to clean, thus affecting graphite material purification, and achieves the technical effect of facilitating flotation plate cleaning to prevent impact on graphite material purification.

Description

Technical Field

[0001] This application relates to the field of graphite anode material extraction technology, and more specifically, to a purification and separation device and method for lithium battery graphite anode materials. Background Technology

[0002] Flotation is an important method for purifying and separating graphite anode materials. Its basic principle is to utilize the differences in the physical and chemical properties of mineral surfaces, and by adding different reagents, graphite can be separated from other impurity minerals. This method is based on graphite's excellent natural flocculation and hydrophobicity. By adding a series of flotation reagents to the gas-liquid interface, graphite minerals are enriched at the gas-liquid interface, thereby separating them from impurity minerals.

[0003] In related technologies, to purify graphite materials through flotation separation, for example, patent CN217017001U provides a flotation device for purifying graphite raw materials. This device uses a second motor to drive a rotating shaft and a rotating disk to rotate inside the flotation tank, causing the stirring blades to agitate the graphite raw material. This causes the graphite raw material and water to continuously foam under the action of the flotation agent. During the agitation process, an airflow can be delivered into the flotation tank through a blower and air pipes, resulting in better foaming. Because graphite has good natural floatability, through agitation and aeration, the graphite selectively adheres to the air bubbles and floats to the surface of the slurry, while the rest remains in the slurry, thus achieving the purpose of mineral separation. The first motor drives the rotating shaft and the flotation rollers, causing the flotation plates to rotate and scraping the foam from the surface of the slurry into the collection tank.

[0004] While the existing technical solutions described above can extract foamed graphite materials through a rotating flotation plate, the foam remains on the flotation plate when it scrapes the foam off the surface of the slurry into the collection box. This is because the foam is light and does not fall easily, affecting the scraping effect of the flotation plate. Furthermore, if the graphite material adhering to the flotation plate is not cleaned, it will change the surface shape of the flotation plate after long-term use, easily causing the aqueous solution to vibrate and resulting in a large amount of aqueous solution being discharged. Water needs to be continuously added into the flotation box to maintain the height of the graphite bubbles, which is detrimental to the purification of graphite materials.

[0005] In view of this, we propose a purification and separation device and method for graphite anode materials in lithium batteries. Summary of the Invention

[0006] The purpose of this application is to provide a purification and separation device and method for graphite anode materials in lithium batteries, which solves the technical problem that the flotation plate is not easy to clean and affects the purification of graphite materials, and achieves the technical effect of making it easy to clean the flotation plate to prevent it from affecting the purification of graphite materials.

[0007] This application provides a purification and separation device for graphite anode materials in lithium batteries, comprising:

[0008] A flotation tank with a collection tank on one side, and a gap is provided between the flotation tank and the collection tank;

[0009] Two flotation plates are rotatably mounted on the top of the collection tank, and the height of both flotation plates is higher than the notch;

[0010] A cleaning mechanism is disposed on top of the two flotation plates, and the cleaning mechanism includes a spray pipe for cleaning the two flotation plates;

[0011] A stirring mechanism is rotatably disposed inside the flotation tank to stir the graphite raw material to make it foam, and to drive the flotation plate and cleaning mechanism to operate;

[0012] The separation mechanism, connected to the bottom of the collection tank via a connecting sleeve, is used to separate graphite material and water.

[0013] As an optional solution to the technical solution in this application, a flotation agent conveying mechanism is provided on one side of the flotation tank for conveying flotation agent into the flotation tank;

[0014] The flotation agent conveying mechanism includes a flotation agent storage tank, a pump body is provided on the top of the flotation agent storage tank, a conveying pipe is provided at the output end of the pump body, and an atomizer is fixedly provided on the top of the conveying pipe.

[0015] As an optional solution to the technical solution of this application, the stirring mechanism includes:

[0016] A drive motor is located below the flotation tank;

[0017] The gearbox is connected to the output end of the drive motor;

[0018] A stirring rod is connected to one output end of the gearbox;

[0019] Transmission structure B is connected to the top of the stirring rod to enable the cleaning mechanism to work in conjunction with the stirring mechanism.

[0020] As an optional solution to the technical solution of this application, the transmission structure B includes a disc, which is disposed on the top of the stirring rod, and a connecting pin is eccentrically disposed on the top of the disc;

[0021] The cleaning mechanism also includes a pressure tank, which is fixedly installed on top of the collection tank;

[0022] A piston is slidably disposed on the inner side of the pressure tank, and a connecting rod is rotatably disposed on one side of the piston, with one end of the connecting rod rotatably disposed with a connecting pin;

[0023] The pressure tank is provided with a one-way inlet valve and a one-way outlet valve on one side. The one-way inlet valve is provided with an inlet structure on one side, which is used to supply water into the one-way inlet valve.

[0024] A discharge pipe is provided on one side of the one-way discharge valve. The bottom of the discharge pipe is fixedly connected to the top of the spray pipe. A transmission structure A is provided on the top of the flotation plate to enable the flotation plate to be linked with the connecting rod.

[0025] As an optional solution to the technical solution of this application, the transmission structure A includes:

[0026] A toothed plate, one side of which is fixedly mounted to the piston;

[0027] The gear meshes with the outer side of the toothed plate;

[0028] A one-way bearing is disposed on the inner side of the gear, and the outer side of the one-way bearing is connected to the gear;

[0029] The transmission column is connected to the inner side of the one-way bearing, and the outer side of the transmission column is connected to the two flotation plates.

[0030] As an optional solution to the technical solution of this application, the separation mechanism includes:

[0031] Separate the outer cylinder and connect it to one side of the connecting sleeve;

[0032] A separating inner cylinder is disposed inside the separating outer cylinder, and the separating inner cylinder is in communication with the inside of the connecting sleeve;

[0033] Filter plate, and the bottom of the separation inner cylinder;

[0034] A spiral conveyor rod is rotatably mounted inside the separation inner cylinder. The spiral conveyor rod is fixedly mounted to another output end of the gearbox and is linked with the stirring mechanism.

[0035] As one alternative to the technical solution in this application, the outer cylinder of the separation device is connected to a negative pressure pump.

[0036] As an optional solution to the technical solution of this application, the liquid inlet structure includes a liquid inlet pipe, one end of which is connected to a one-way liquid inlet valve;

[0037] The other end of the inlet pipe is connected to a storage tank, which is connected to the outer separator cylinder via a connecting pipe.

[0038] This application also provides a separation method for the above-mentioned lithium battery graphite anode material purification and separation device, including the following steps:

[0039] S1. Flotation: The flotation reagent is sprayed into the flotation tank through the flotation reagent storage tank, and then driven by the drive motor, the stirring rod stirs the flotation reagent, graphite raw material and water to make the flotation reagent foaming effect better. The liquid in the flotation tank is not higher than the gap, and the height of the foam is higher than the gap.

[0040] S2. Collection: The stirring mechanism drives the cleaning mechanism, which in turn drives the flotation plate to rotate, scraping the foam inside the flotation tank through the notch into the collection tank to collect the graphite foam.

[0041] S3. Cleaning: The cleaning mechanism is driven by the stirring mechanism. While the flotation plates are rotating, the spray pipes clean the two flotation plates in turn, so that the residual foam on the two flotation plates falls into the collection tank.

[0042] S4. Separation: The collected foam and water inside the collection tank fall into the separation mechanism through the connecting sleeve. The drive motor drives the screw conveyor to rotate, and the foam moves under the drive of the screw conveyor. It is filtered through the filter plate in the inner separation cylinder, while the water falls into the outer separation cylinder to wait for the next use. The graphite foam is moved from the separation mechanism to the equipment for the next step under the drive of the screw conveyor.

[0043] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0044] (1) This application uses a cleaning mechanism to spray and clean the top of the flotation plate, which can prevent graphite foam from remaining on the flotation plate, improve the scraping efficiency, and prevent the flotation plate from deforming. Therefore, it effectively solves the problem that the flotation plate is not easy to clean and affects the purification of graphite materials, and thus achieves the technical effect of making it easy to clean the flotation plate to prevent it from affecting the purification of graphite materials.

[0045] (2) By setting a stirring mechanism inside the flotation tank, this application can stir the flotation agent, graphite raw material and water inside the flotation tank, so that the flotation agent has a better foaming effect, improves the foaming effect of the equipment, and thus improves the purification effect of the equipment.

[0046] (3) By setting a liquid inlet structure at the bottom of the cleaning mechanism, this application can reuse the water filtered by the equipment to clean the flotation plate, realize the recycling of water, increase the environmental protection performance of the equipment, and thus improve the use effect of the equipment.

[0047] (4) By setting a flotation agent conveying mechanism on one side of the flotation tank, this application can automatically add flotation agent into the flotation tank, which increases the practicality of the equipment, improves the comfort of using the equipment, and thus improves the effect of the equipment. Attached Figure Description

[0048] Figure 1This is a schematic diagram of the overall structure of a lithium battery graphite anode material purification and separation device disclosed in a preferred embodiment of this application.

[0049] Figure 2 This is a schematic diagram of the flotation tank in a lithium battery graphite anode material purification and separation device disclosed in a preferred embodiment of this application.

[0050] Figure 3 This is a schematic diagram of the internal structure of the flotation tank in the purification and separation device for graphite anode materials of lithium batteries, as disclosed in a preferred embodiment of this application.

[0051] Figure 4 This is a schematic diagram of the stirring mechanism in a lithium battery graphite anode material purification and separation device disclosed in a preferred embodiment of this application.

[0052] Figure 5 This is a schematic diagram of the cleaning mechanism and transmission structure assembly in a lithium battery graphite anode material purification and separation device disclosed in a preferred embodiment of this application.

[0053] Figure 6 for Figure 5 A schematic diagram of the structure after removing the pressure tank;

[0054] Figure 7 This is an exploded structural diagram of the separation mechanism in the lithium battery graphite anode material purification and separation device disclosed in a preferred embodiment of this application;

[0055] Figure 8 This is a schematic diagram of the liquid inlet structure in a lithium battery graphite anode material purification and separation device disclosed in a preferred embodiment of this application;

[0056] Figure 9 This is a schematic diagram of the flotation agent conveying mechanism in a lithium battery graphite anode material purification and separation device disclosed in a preferred embodiment of this application.

[0057] Explanation of the labels in the diagram: 1. Flotation tank; 11. Collection tank; 12. Notch; 13. Support frame; 14. Connecting sleeve;

[0058] 2. Flotation plate;

[0059] 3. Cleaning mechanism; 31. Spray pipe; 32. Pressure tank; 33. Piston; 34. Connecting rod; 35. One-way inlet valve; 36. Inlet structure; 361. Inlet pipe; 362. Storage tank; 363. Connecting pipe; 37. One-way outlet valve; 38. Outlet pipe; 39. Transmission structure A; 391. Gear plate; 392. Gear; 393. One-way bearing; 394. Transmission column;

[0060] 4. Stirring mechanism; 41. Drive motor; 42. Gearbox; 43. Stirring rod; 44. Transmission structure B; 441. Disc; 442. Connecting pin;

[0061] 5. Separation mechanism; 51. Outer separation cylinder; 52. Inner separation cylinder; 53. Filter plate; 54. Screw conveyor; 55. Negative pressure pump;

[0062] 6. Flotation reagent conveying mechanism; 61. Flotation reagent storage tank; 62. Pump body; 63. Conveying pipe; 64. Atomizer. Detailed Implementation

[0063] The present application will be further described in detail below with reference to the accompanying drawings.

[0064] Reference Figures 1-3 This application discloses a purification and separation device for graphite anode materials of lithium batteries, including a flotation tank 1, a collection tank 11 fixedly disposed on one side of the flotation tank 1, a notch 12 provided between the flotation tank 1 and the collection tank 11, two flotation plates 2 rotatably disposed on the top of the collection tank 11, the height of the two flotation plates 2 being higher than the notch 12, a cleaning mechanism 3 disposed on the top of the two flotation plates 2, the cleaning mechanism 3 including a spray pipe 31 for cleaning the two flotation plates 2, and a stirring mechanism 4 rotatably disposed inside the flotation tank 1 for stirring the graphite raw material to make it foam, and driving the flotation plates 2 and the cleaning mechanism 3 to run.

[0065] The stirring mechanism 4 agitates the flotation reagent, graphite raw material, and water inside the flotation tank 1, improving the foaming effect of the flotation reagent. The liquid level in the flotation tank 1 is no higher than the notch 12, while the foam level is higher than the notch 12. Simultaneously, the stirring mechanism 4 drives the cleaning mechanism 3, which in turn rotates the flotation plate 2, scraping the foam inside the flotation tank 1 through the notch 12 into the collection tank 11 for collecting the graphite foam. While the flotation plate 2 rotates, the spray pipe 31 cleans the two flotation plates 2 alternately, causing the residual foam on the two flotation plates 2 to fall into the collection tank 11. This ensures the equipment's cleaning effect on the flotation plates 2 and prevents graphite material from adhering to the flotation plates 2 during long-term use, which could alter the shape of the flotation plates 2 and affect the flotation effect.

[0066] Reference Figure 1 The flotation tank 1 also includes a support frame 13, the top of which is fixedly installed to the bottom of the flotation tank 1 to support the internal structure of the equipment.

[0067] By fixing the support frame 13 at the bottom of the flotation tank 1, the flotation tank 1, the cleaning mechanism 3 and the stirring mechanism 4 can be supported, ensuring the stability and safety of the equipment during use.

[0068] Reference Figure 1 , Figure 3The stirring mechanism 4 includes a drive motor 41, which is fixedly installed inside the support frame 13. A gearbox 42 is fixedly installed at the output end of the drive motor 41. A stirring rod 43 is fixedly installed at one output end of the gearbox 42. A transmission structure B44 is fixedly installed at the top of the stirring rod 43 for linking the cleaning mechanism 3 with the stirring mechanism 4.

[0069] The drive motor 41 drives the gearbox 42 to rotate, and the gearbox 42 drives the stirring rod 43 to rotate, which stirs the flotation agent, graphite raw material and water inside the flotation tank 1, improving the foaming effect of the equipment. The stirring mechanism 4 and the cleaning mechanism 3 are linked through the transmission structure B44.

[0070] Reference Figures 3-6 The transmission structure B44 includes a disc 441, which is fixedly mounted on the top of the stirring rod 43. A connecting pin 442 is eccentrically mounted on the top of the disc 441. The cleaning mechanism 3 also includes a pressure tank 32, which is fixedly mounted on the top of the collection tank 11. A piston 33 is slidably mounted on the inner side of the pressure tank 32. A connecting rod 34 is rotatably mounted on one side of the piston 33. One end of the connecting rod 34 is rotatably mounted with the connecting pin 442. A one-way inlet valve 35 and a one-way outlet valve 37 are mounted on one side of the pressure tank 32. An inlet structure 36 is mounted on one side of the one-way inlet valve 35, which is used to deliver water into the one-way inlet valve 35. An outlet pipe 38 is mounted on one side of the one-way outlet valve 37, and the bottom of the outlet pipe 38 is fixedly mounted on the top of the spray pipe 31. A transmission structure A39 is mounted on the top of the flotation plate 2, which is used to link the flotation plate 2 with the connecting rod 34.

[0071] The rotation of the stirring rod 43 drives the disk 441 to rotate, which in turn drives the connecting pin 442 to rotate eccentrically on the disk 441, thereby driving the connecting rod 34 and its connected piston 33 to move. The piston 33 moves horizontally under the limit of the pressure tank 32, and performs water intake and discharge operations under the action of the one-way liquid inlet valve 35 and the one-way liquid outlet valve 37. When the piston 33 moves away from the one-way liquid inlet valve 35, water is drawn into the pressure tank 32 through the liquid inlet structure 36 under the action of the one-way liquid inlet valve 35. When the piston 33 moves closer to the one-way liquid inlet valve 35, water is discharged into the spray pipe 31 through the liquid outlet pipe 38 under the action of the one-way liquid outlet valve 37. Water is sprayed out from the spray pipe 31 to clean one of the flotation plates 2. The transmission structure A39 makes the flotation plate 2 linked with the connecting rod 34.

[0072] Reference Figure 5 , Figure 6The transmission structure A39 includes a toothed plate 391. One side of the toothed plate 391 is fixedly disposed with the piston 33. A gear 392 is meshed on the outer side of the toothed plate 391. A one-way bearing 393 is disposed on the inner side of the gear 392. The outer side of the one-way bearing 393 is fixedly disposed with the gear 392. A transmission column 394 is fixedly disposed on the inner side of the one-way bearing 393. The outer side of the transmission column 394 is fixedly disposed with two flotation plates 2.

[0073] The piston 33 moves, causing the toothed plate 391 to move, which in turn drives the gear 392 to rotate. Under the action of the one-way bearing 393, the gear 392 drives the transmission column 394 and the two connected flotation plates 2 to rotate only when it reverses. When the piston 33 moves away from the one-way inlet valve 35, it drives the toothed plate 391 to move, which in turn drives the gear 392 to reverse, thereby driving the transmission column 394 and the two connected flotation plates 2 to rotate 180°. Then, the piston 33 moves closer to the one-way inlet valve 35, causing the spray pipe 31 to spray water to clean the flotation plates 2 on one side. At this time, under the action of the one-way bearing 393, the two flotation plates 2 do not rotate.

[0074] Reference Figure 1 and Figure 3 The bottom of the collection tank 11 is fixedly equipped with a separation mechanism 5 via a connecting sleeve 14. The separation mechanism 5 is used to separate graphite material and water.

[0075] The graphite material and water in the collection tank 11 are drawn into the separation mechanism 5 by the connecting sleeve 14, and the separation mechanism 5 performs a separation operation on them.

[0076] Reference Figure 1 , Figure 6 and Figure 7 The separation mechanism 5 includes a separation outer cylinder 51, which is fixedly disposed on one side of the connecting sleeve 14. A separation inner cylinder 52 is disposed inside the separation outer cylinder 51 and communicates with the inside of the connecting sleeve 14. A filter plate 53 is disposed on the top of the separation inner cylinder 52. A spiral conveying rod 54 is rotatably disposed inside the separation inner cylinder 52. The spiral conveying rod 54 is fixedly disposed on the other output end of the gearbox 42 and is linked with the stirring mechanism 4. A negative pressure pump 55 is fixedly disposed on the top of the separation outer cylinder 51.

[0077] The screw conveyor 54 is driven to rotate by the gearbox 42. The foam moves under the drive of the screw conveyor 54 and is filtered by the filter plate 53 in the inner separation cylinder 52. The water falls into the outer separation cylinder 51 to wait for the next use. The graphite foam is moved from the separation mechanism 5 to the equipment for the next step under the drive of the screw conveyor 54. The negative pressure pump 55 creates negative pressure in the outer separation cylinder 51, which improves the filtration effect of the equipment.

[0078] Reference Figure 1 , Figure 8 The liquid inlet structure 36 includes a liquid inlet pipe 361. One end of the liquid inlet pipe 361 is fixedly connected to a one-way liquid inlet valve 35, and the other end of the liquid inlet pipe 361 is fixedly connected to a liquid storage tank 362. The liquid storage tank 362 is connected to the outer separator cylinder 51 through a connecting pipe 363.

[0079] Water used for cleaning the flotation plate 2 is supplied to the one-way inlet valve 35 through the inlet pipe 361. Water is stored in the storage tank 362. Water in the outer separator 51 can flow into the storage tank 362 through the connecting pipe 363, realizing water recycling and improving the environmental protection effect of the equipment.

[0080] Reference Figure 1 and Figure 9 A flotation agent conveying mechanism 6 is provided on one side of the flotation tank 1 for conveying flotation agent into the flotation tank 1. The flotation agent conveying mechanism 6 includes a flotation agent storage tank 61, a pump body 62 is provided on the top of the flotation agent storage tank 61, a conveying pipe 63 is provided at the output end of the pump body 62, and an atomizer 64 is fixedly provided on the top of the conveying pipe 63.

[0081] The flotation agent in the flotation agent storage tank 61 is drawn in by the pump body 62 and then transported to the atomizer 64 through the delivery pipe 63, so that the atomizer 64 sprays the flotation agent into the flotation tank 1.

[0082] Reference Figures 1-9 This application discloses a separation method for the above-mentioned lithium battery graphite anode material purification and separation device, including the following steps:

[0083] S1. Flotation: The flotation agent is sprayed into the flotation tank 1 through the flotation agent storage tank 61, and then driven by the drive motor 41 to make the stirring rod 43 stir the flotation agent, graphite raw material and water, so that the flotation agent foaming effect is better. The liquid in the flotation tank 1 is not higher than the gap 12, and the height of the foam is higher than the gap 12.

[0084] S2. Collection: The stirring mechanism 4 drives the cleaning mechanism 3, thereby driving the flotation plate 2 to rotate, scraping the foam inside the flotation tank 1 into the collection tank 11 through the notch 12, and collecting the graphite foam.

[0085] S3. Cleaning: The cleaning mechanism 3 is driven by the stirring mechanism 4. While the flotation plate 2 is rotating, the spray pipe 31 cleans the two flotation plates 2 in turn, so that the foam remaining on the two flotation plates 2 falls into the collection tank 11.

[0086] S4. Separation: The foam and water collected inside the collection tank 11 fall into the separation mechanism 5 through the connecting sleeve 14. The drive motor 41 drives the screw conveyor 54 to rotate. The foam moves under the drive of the screw conveyor 54 and is filtered through the filter plate 53 in the inner separation cylinder 52. The water falls into the outer separation cylinder 51 to wait for the next use. The graphite foam moves from the separation mechanism 5 to the equipment for the next step under the drive of the screw conveyor 54.

[0087] In summary, the lithium battery graphite anode material purification and separation device disclosed in this application, during use, draws flotation reagent from the flotation reagent storage tank 61 through the pump body 62, and then delivers the flotation reagent to the atomizer 64 through the delivery pipe 63, causing the atomizer 64 to spray the flotation reagent into the flotation tank 1. The drive motor 41 drives the gearbox 42 to rotate, which in turn drives the stirring rod 43 to rotate, stirring the flotation reagent, graphite raw material, and water inside the flotation tank 1, thereby improving the foaming effect of the equipment. The liquid level in the intermediate flotation tank 1 is not higher than the gap 12, while the foam level is higher than the gap 12. The rotation of the stirring rod 43 causes the disc 441 to rotate, which in turn causes the connecting pin 442 to rotate eccentrically on the disc 441. This, in turn, causes the connecting rod 34 and its connected piston 33 to move. When the piston 33 moves away from the one-way inlet valve 35, water is drawn into the pressure tank 32 through the inlet structure 36 under the action of the one-way inlet valve 35. Simultaneously, the piston 33 drives the toothed plate 391 to move, thereby... The moving gear 392 reverses, thereby driving the transmission column 394 and the two connected flotation plates 2 to rotate 180°. Then, the piston 33 moves closer to the one-way inlet valve 35. At this time, under the action of the one-way bearing 393, the two flotation plates 2 do not rotate. Under the action of the one-way outlet valve 37, water is released into the spray pipe 31 through the outlet pipe 38. The water sprays out from the spray pipe 31, cleaning one of the flotation plates 2. This process is repeated, allowing the spray pipe 31 to clean the two flotation plates 2 alternately, thus cleaning both... The foam remaining on the flotation plate 2 falls into the collection tank 11. The collected foam and water inside the collection tank 11 fall into the separation mechanism 5 through the connecting sleeve 14. The screw conveyor 54 is driven to rotate by the gearbox 42. The foam moves under the drive of the screw conveyor 54 and is filtered through the filter plate 53 in the inner separation cylinder 52. The water falls into the outer separation cylinder 51 to wait for the next use. The graphite foam is moved from the separation mechanism 5 to the equipment for the next step under the drive of the screw conveyor 54.

Claims

1. A purification and separation device for graphite anode materials in lithium batteries, characterized in that, include: A flotation tank (1) is provided with a collection tank (11) on one side, and a notch (12) is provided between the flotation tank (1) and the collection tank (11). Two flotation plates (2) are rotatably mounted on the top of the collection tank (11), and the height of the two flotation plates (2) is higher than the notch (12). A cleaning mechanism (3) is disposed on top of the two flotation plates (2). The cleaning mechanism (3) includes a spray pipe (31) for cleaning the two flotation plates (2). The stirring mechanism (4) is rotatably installed inside the flotation tank (1) to stir the graphite raw material to make it foam, and to drive the flotation plate (2) and the cleaning mechanism (3) to run. The separation mechanism (5) is connected to the bottom of the collection tank (11) via a connecting sleeve (14) and is used to separate graphite material and water. The stirring mechanism (4) includes: A drive motor (41) is located below the flotation tank (1); The gearbox (42) is connected to the output end of the drive motor (41); The stirring rod (43) is connected to one output end of the gearbox (42); The transmission structure B (44) is connected to the top of the stirring rod (43) to enable the cleaning mechanism (3) and the stirring mechanism (4) to work together. The transmission structure B (44) includes a disc (441), which is disposed on the top of the stirring rod (43), and a connecting pin (442) is eccentrically disposed on the top of the disc (441). The cleaning mechanism (3) also includes a pressure tank (32), which is fixedly installed on the top of the collection tank (11); A piston (33) is slidably provided on the inner side of the pressure tank (32), and a connecting rod (34) is rotatably provided on one side of the piston (33). One end of the connecting rod (34) is rotatably connected to the connecting pin (442). The pressure tank (32) is provided with a one-way inlet valve (35) and a one-way outlet valve (37) on one side. The one-way inlet valve (35) is provided with an inlet structure (36) on one side. The inlet structure (36) is used to deliver water into the one-way inlet valve (35). The one-way discharge valve (37) is provided with a discharge pipe (38) on one side. The bottom of the discharge pipe (38) is fixedly connected to the top of the spray pipe (31). The top of the flotation plate (2) is provided with a transmission structure A (39) for linking the flotation plate (2) with the connecting rod (34). The transmission structure A (39) includes: A toothed plate (391) is fixedly disposed on one side with the piston (33); The gear (392) meshes with the outer side of the toothed plate (391); A one-way bearing (393) is disposed on the inner side of the gear (392), and the outer side of the one-way bearing (393) is connected to the gear (392); The transmission column (394) is connected to the inner side of the one-way bearing (393), and the outer side of the transmission column (394) is connected to the two flotation plates (2).

2. The lithium battery graphite anode material purification and separation device according to claim 1, characterized in that, A flotation agent conveying mechanism (6) is provided on one side of the flotation tank (1) for conveying flotation agent into the flotation tank (1); The flotation agent conveying mechanism (6) includes a flotation agent storage tank (61), a pump body (62) is provided on the top of the flotation agent storage tank (61), a conveying pipe (63) is provided at the output end of the pump body (62), and an atomizer (64) is fixedly provided on the top of the conveying pipe (63).

3. The lithium battery graphite anode material purification and separation device according to claim 1, characterized in that, The separation mechanism (5) includes: Separate the outer cylinder (51) and connect it to one side of the connecting sleeve (14); The inner separating cylinder (52) is disposed inside the outer separating cylinder (51), and the inner separating cylinder (52) is in communication with the inside of the connecting sleeve (14); The filter plate (53) is located at the bottom of the separation inner cylinder (52); The spiral conveyor rod (54) is rotatably disposed inside the separation inner cylinder (52). The spiral conveyor rod (54) is fixedly disposed at the other output end of the gearbox (42) and is linked with the stirring mechanism (4).

4. The lithium battery graphite anode material purification and separation device according to claim 3, characterized in that, The outer separator (51) is connected to a negative pressure pump (55).

5. The lithium battery graphite anode material purification and separation device according to claim 1, characterized in that, The liquid inlet structure (36) includes a liquid inlet pipe (361), one end of which is connected to a one-way liquid inlet valve (35). The other end of the inlet pipe (361) is connected to a storage tank (362), and the storage tank (362) is connected to the outer separator (51) through a connecting pipe (363).

6. The separation method of the lithium battery graphite anode material purification and separation device according to claim 3, characterized in that, Includes the following steps: S1, Flotation: The flotation agent is sprayed into the flotation tank (1) through the flotation agent conveying mechanism (6), and then driven by the drive motor (41) to make the stirring rod (43) stir the flotation agent, graphite raw material and water, so that the flotation agent foaming effect is better. The liquid in the flotation tank (1) is not higher than the gap (12), and the height of the foam is higher than the gap (12). S2. Collection: The stirring mechanism (4) drives the cleaning mechanism (3), thereby driving the flotation plate (2) to rotate, scraping the foam inside the flotation tank (1) into the collection tank (11) through the notch (12) to collect the graphite foam; S3. Cleaning: The cleaning mechanism (3) is driven by the stirring mechanism (4) to operate. While the flotation plate (2) is rotating, the spray pipe (31) cleans the two flotation plates (2) in turn, so that the foam remaining on the two flotation plates (2) falls into the collection tank (11). S4. Separation: The foam and water collected inside the collection tank (11) fall into the separation mechanism (5) through the connecting sleeve (14). The drive motor (41) drives the screw conveyor (54) to rotate. The foam moves under the drive of the screw conveyor (54) and is filtered through the filter plate (53) in the inner separation cylinder (52). The water falls into the outer separation cylinder (51) to wait for the next use. The graphite foam moves from the separation mechanism (5) to the equipment for the next step under the drive of the screw conveyor (54).

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