Graphite negative electrode material continuous coating granulation production device and method

Abstract

The application discloses a graphite negative electrode material continuous coating granulation production device and method, and belongs to the technical field of granulation production. The device comprises a machine shell, a feeding inlet is fixedly installed on the top surface of the machine shell, a machine door is hinged to the outside of the machine shell, and a grinding inner shell is fixedly installed in the machine shell. In the application, a grinding assembly, a driven assembly and a mixing and coating mechanism are arranged in a matched mode. Through the combination of various structures, the grinding process of graphite material and the subsequent coating process of graphite material are organically combined together, different operation steps can be completed at the same time, the overall process flow is simplified, the equipment cost is reduced, the operation space utilization is improved, the moving and mixing treatment of the material can be realized, the uniformity and effectiveness of material mixing and coating can be effectively improved, some wall-hung materials can be introduced, the waste of materials is avoided, and the practical application effect of the overall equipment is greatly improved.

Description

Technical Field

[0001] This invention belongs to the field of granulation production technology, and particularly relates to a continuous coating granulation production device and method for graphite anode materials. Background Technology

[0002] Graphite anode material refers to carbonaceous materials used as anodes in lithium-ion batteries, typically mixed with lithium salts to form an electrolyte. It has a layered structure that allows for the insertion and extraction of lithium ions, thus exhibiting high reversible capacity, good conductivity and stability, and a low lithium insertion voltage. Before being used, graphite anode materials require external coating with a coating granulation process.

[0003] Chinese patent (CN117398899A) discloses a method and apparatus for continuous coating and granulation preparation of graphite anode material for batteries. The method includes obtaining an initial mass ratio of graphite powder and binder based on a production factor table, optimizing the mass ratio, mixing the graphite powder and binder to prepare a graphite paste, and then using a granulation device to shear the paste into uniform particles. An infrared module is used to heat the particles, and the temperature distribution and dynamic changes of the particles are monitored in real time to adjust the power of the infrared module. The heated particles are then coated and cooled to obtain the finished product. By optimizing the initial mass ratio, the method can respond to environmental changes or fluctuations in raw material quality. Furthermore, the infrared module enables dynamic adjustment of processing parameters during the particle heating process, achieving feedback regulation and improving the performance, quality, and consistency of the product. This results in graphite anode material with high particle size uniformity, thus enhancing battery performance. While current graphite anode material coating and granulation equipment can achieve granulation, it still faces some problems in practical applications. These problems mainly manifest in the inability to simultaneously perform graphite grinding and subsequent coating operations, resulting in a long overall process flow, numerous pieces of equipment involved, and high energy consumption. Furthermore, the effect is poor when mixing and coating graphite materials, with some materials not being fully coated, affecting the overall practical application of the equipment. To solve these problems, there is an urgent need for a continuous coating and granulation production device and method for graphite anode materials. Summary of the Invention

[0004] The purpose of this invention is to address the problems that exist in current graphite anode material coating and granulation equipment, although granulation can be achieved, in practical applications. These problems mainly manifest in the inability to simultaneously perform graphite grinding and subsequent coating operations, resulting in a long overall process flow, numerous pieces of equipment involved, high energy consumption, and poor coating effects when mixing graphite materials, with some materials not being fully coated, thus affecting the overall practical application effect of the equipment. Therefore, this invention proposes a continuous coating and granulation production device and method for graphite anode materials.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a continuous coating and granulation production device for graphite anode materials, comprising a housing, an inlet fixedly installed on the top surface of the housing, an external door installed on the outside of the housing via hinges, a grinding inner shell fixedly installed inside the housing, a particle screening plate provided at the bottom of the housing, and two internal toothed racks fixedly installed laterally inside the housing.

[0006] A material collection assembly is fixedly installed at the bottom of the casing, which is used to collect the final coated particles. A grinding assembly is provided on one outer wall of the casing, which is used to grind the graphite anode material. A feeding port and two circulating material guiding assemblies are provided on the rear outer wall of the casing, which are used for the recycling and release of the graphite anode coating material. A driven assembly is rotatably installed inside the casing, and a mixing and coating mechanism is movably installed outside the driven assembly. The mixing and coating mechanism is used for the stable mixing and coating of the graphite anode material, and the driven assembly is used for the reciprocating drive of the mixing and coating mechanism.

[0007] As a further description of the above technical solution:

[0008] The grinding assembly includes a grinding motor, which is fixedly installed on one side of the outer wall of the housing. A rotating shaft is fixedly installed at one end of the output shaft of the grinding motor, and a grinding roller is fixedly installed at the other end of the rotating shaft. A drive pulley is fixedly installed on the outside of the rotating shaft. The grinding roller is located inside the grinding inner shell, and the grinding inner shell has several screening holes inside.

[0009] As a further description of the above technical solution:

[0010] The driven component includes a reciprocating screw, which is rotatably mounted inside the housing. A driven pulley is fixedly mounted at one end of the reciprocating screw. Two screw limit sleeves are fixedly mounted on the outside of the reciprocating screw. Both the drive pulley and the driven pulley are located in the side cavity of the housing. The drive pulley and the driven pulley are connected by a transmission belt.

[0011] As a further description of the above technical solution:

[0012] The hybrid coating mechanism includes a movable component that is threadedly mounted on the outside of a reciprocating lead screw. The movable component includes a threaded moving bar with an inner mounting groove inside, and a built-in spring is fixedly mounted inside the inner mounting groove.

[0013] As a further description of the above technical solution:

[0014] A telescopic frame is fixedly installed at the top of the built-in spring. One end of the telescopic frame is slidably connected to the mounting inner groove. An arc-shaped top plate is fixedly installed at the top of the telescopic frame. A movable cleaning pad is fixedly installed on the top surface of the arc-shaped top plate. The outer surface of the movable cleaning pad is in close contact with and pressed against the bottom surface of the grinding inner shell.

[0015] As a further description of the above technical solution:

[0016] Mounting holes are provided on both outer walls of the threaded moving bar. A traveling roller is rotatably mounted in the mounting holes via a rotating shaft. Several unblocking protrusions are provided on the outer surface of the traveling roller. The traveling roller is in rolling connection with the particle screen plate.

[0017] As a further description of the above technical solution:

[0018] The threaded moving bar has a through hole inside, and a movable mixing and coating component is rotatably installed in the through hole. The movable mixing and coating component includes a mounting shaft, which is rotatably installed in the through hole. A mixing and coating material plate and a gear are fixedly installed on the outside of the mounting shaft, and the gear and the built-in rack are meshed with each other.

[0019] As a further description of the above technical solution:

[0020] The circulating material guiding assembly includes a discharge shell, a material trough is provided on one outer wall of the housing, the discharge shell is fixedly installed in the material trough, a circulating material guiding pipe is fixedly installed on one outer wall of the discharge shell, a suction pump is fixedly installed on the outside of the circulating material guiding pipe, one end of the circulating material guiding pipe passes through and extends into the interior of the housing, a suction plate is fixedly installed on one end of the circulating material guiding pipe, and a plurality of suction holes are provided on the outer surface of the suction plate.

[0021] As a further description of the above technical solution:

[0022] The receiving assembly includes a receiving box, which is fixedly installed at the bottom of the machine housing. Two guide ramps are fixedly installed inside the receiving box. Discharge ports are provided on both sides of the receiving box, and baffles are installed inside the discharge ports via hinges.

[0023] This article also discloses a continuous coating and granulation production method for graphite anode materials, including the following steps:

[0024] S1. When using this equipment, the graphite negative electrode material is added into the machine housing through the feed port, and the material falls into the grinding inner shell.

[0025] S2. At this time, the grinding motor is turned on. The grinding motor can drive the drive pulley and the grinding roller to rotate. The grinding roller can grind the added material, so that the material is powdered and falls through the screen hole. During the above process, the drive pulley can drive the driven pulley to rotate through the transmission belt. The reciprocating screw can rotate, causing the mixing and coating mechanism installed on it to move back and forth. When it moves, it can drive the moving mixing and coating component to move synchronously. The gear can mesh with the built-in rack during the movement, driving the mixing and coating material plate to rotate, and mixing and coating the material.

[0026] S3. During the movement of the mixing and coating mechanism, the movable cleaning pad set on the top can circulate and clean the bottom of the grinding inner shell, thereby cleaning off some of the graphite powder hanging on the wall and avoiding waste. Since the arc-shaped top plate is retractable, it can continuously apply pressure to the grinding inner shell under the action of the built-in spring, ensuring the thorough cleaning of the adhering material.

[0027] S4. When coating materials, the coating material is directly introduced into the machine casing through the feeding port, and the suction pump is turned on. The suction pump can draw the mixed coating material in the machine casing through the suction plate and reintroduce it into the machine casing through the discharge shell. This process is repeated to achieve the cyclic mixing and coating of the material. Finally, the coated material that meets the particle size requirements can be introduced into the receiving box through the particle sieve plate and dispersed into the discharge ports on both sides through two guide inclined plates, ready for subsequent material collection.

[0028] S5. When the mixing and coating mechanism moves back and forth, the traveling roller can also roll back and forth on the granule screen plate. The unblocking protrusions on its outer surface can be embedded in the screen holes of the granule screen plate during the movement, so as to unblock the screen holes and avoid the accumulation of a large amount of coating material, which would cause the granule screen plate to be blocked. At the same time, the rolling traveling roller can also ensure the stability of the overall mixing and coating mechanism movement.

[0029] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0030] 1. In this invention, a grinding assembly, a driven assembly, and a mixing and coating mechanism are provided. When the equipment is in use, graphite negative electrode material is added into the machine housing through the feed inlet. The material falls into the grinding inner shell. At this time, the grinding motor is turned on, driving the drive pulley and grinding roller to rotate. The grinding roller grinds the added material, causing it to fall as powder through the sieve holes. During this process, the drive pulley drives the driven pulley to rotate via the transmission belt, and the reciprocating screw rotates, causing the mixing and coating mechanism mounted on it to move back and forth. During this movement, the moving mixing and coating assembly is synchronously displaced. The gear meshes with the built-in rack during movement, driving the mixing and coating plate to rotate, thus mixing and coating the material. Through this design, the grinding process of graphite material and the subsequent coating process are organically combined through the combination of various structures. This allows for the simultaneous completion of different operation steps, simplifying the overall process flow, reducing equipment costs, improving the utilization rate of the workspace, and enabling the moving mixing and processing of materials. This effectively improves the uniformity and effectiveness of the material mixing and coating, greatly enhancing the overall practical application effect of the equipment.

[0031] 2. In this invention, by providing a retractable arc-shaped top plate on the mixing and coating mechanism, the movable cleaning pad on the top of the mixing and coating mechanism can circulate and clean the bottom of the grinding inner shell during the movement of the mixing and coating mechanism, thereby cleaning off some of the graphite powder adhering to the wall and avoiding waste. Since the arc-shaped top plate is retractable, it can continuously apply pressure to the grinding inner shell under the action of the built-in spring, ensuring the thorough cleaning of the adhering material.

[0032] 3. In this invention, by providing a receiving component and a circulating material guiding component, the coating material is directly introduced into the machine casing through the feeding port during material coating. The suction pump is then activated, drawing the mixed coating material from inside the machine casing through the suction plate and reintroducing it into the machine casing through the discharge shell. This process is repeated to achieve cyclic mixing and coating of the material. The final coated material, meeting the particle size requirements, is guided through the particle sieve plate into the receiving box and then dispersed at the discharge ports on both sides by two guide plates, ready for subsequent material collection. This design enables cyclic mixing and coating of the material, significantly improving the yield of the final coated material and ensuring the comprehensiveness and thoroughness of the coating operation.

[0033] 4. In this invention, by providing traveling rollers with several unblocking protrusions on both sides of the mixing and coating mechanism, the traveling rollers can also roll back and forth on the particle screen plate when the mixing and coating mechanism moves back and forth. The unblocking protrusions on their outer surface can embed into the screen holes of the particle screen plate during the movement, thereby unblocking the screen holes and preventing the accumulation of a large amount of coating material, which would cause the particle screen plate to become blocked. At the same time, the rolling traveling rollers can also ensure the stability of the overall mixing and coating mechanism movement and improve the application effect of the equipment. Attached Figure Description

[0034] Figure 1 This is a three-dimensional structural diagram of a continuous coating and granulation production device for graphite anode materials.

[0035] Figure 2 This is a three-dimensional structural diagram of a continuous coating and granulation production device for graphite anode materials from another angle.

[0036] Figure 3 This is an exploded three-dimensional structural diagram of a continuous coating and granulation production device for graphite anode materials.

[0037] Figure 4 This is an exploded three-dimensional structural diagram of the casing in a continuous coating and granulation production device for graphite anode materials.

[0038] Figure 5 This is a three-dimensional structural diagram of the circulating material guiding component in a continuous coating and granulation production device for graphite anode materials.

[0039] Figure 6 This is an exploded three-dimensional structural diagram of the grinding component, driven component, and mixing and coating mechanism in a continuous coating and granulation production device for graphite anode materials.

[0040] Figure 7 This is an exploded three-dimensional structural diagram of the mixing and coating mechanism in a continuous coating and granulation production device for graphite anode materials.

[0041] Figure 8 This is an exploded three-dimensional structural diagram of a moving component in a continuous coating and granulation production device for graphite anode materials.

[0042] Figure 9 This is a three-dimensional structural diagram of a moving mixing and coating component in a continuous coating and granulation production device for graphite anode materials.

[0043] Figure 10 A continuous coating and granulation production device for graphite anode materials Figure 3 A magnified structural diagram of point A in the middle.

[0044] Legend:

[0045] 1. Feed inlet; 2. Machine casing; 3. Machine door; 4. Receiving assembly; 41. Discharge outlet; 42. Guide plate; 43. Receiving box; 5. Grinding assembly; 51. Grinding roller; 52. Drive pulley; 53. Grinding motor; 6. Circulating guide assembly; 61. Discharge shell; 62. Circulating guide pipe; 63. Pump; 64. Suction plate; 7. Grinding inner shell; 8. Driven assembly; 81. Drive belt; 82. Driven pulley; 83. Reciprocating wire 84. Screw limit sleeve; 9. Mixing and coating mechanism; 91. Moving component; 911. Moving cleaning pad; 912. Arc-shaped top plate; 913. Telescopic frame; 914. Built-in spring; 915. Mounting inner groove; 916. Threaded moving bar; 92. Traveling roller; 93. Unblocking protruding particles; 94. Moving mixing and coating component; 941. Mixing and coating material plate; 942. Gear; 943. Mounting shaft; 10. Particle screen plate; 11. Built-in rack. Detailed Implementation

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] Please see Figures 1-10 The present invention provides a technical solution: a continuous coating and granulation production device for graphite anode materials, including a housing 2, an inlet 1 fixedly installed on the top surface of the housing 2, an external door 3 installed on the outside of the housing 2 via a hinge, a grinding inner shell 7 fixedly installed inside the housing 2, a particle screening plate 10 provided at the bottom of the housing 2, and two internal toothed racks 11 fixedly installed laterally inside the housing 2;

[0048] A material collection component 4 is fixedly installed at the bottom of the housing 2. The material collection component 4 is used to collect the final coated particles. A grinding component 5 is provided on one side outer wall of the housing 2. The grinding component 5 is used to grind the graphite anode material. A feeding port and two circulating material guiding components 6 are provided on the rear outer wall of the housing 2. The circulating material guiding components 6 are used for the recycling and release of the graphite anode coating material. A driven component 8 is rotatably installed inside the housing 2. A mixing and coating mechanism 9 is movably installed outside the driven component 8. The mixing and coating mechanism 9 is used for the stable mixing and coating of the graphite anode material. The driven component 8 is used for the reciprocating drive of the mixing and coating mechanism 9.

[0049] The grinding assembly 5 includes a grinding motor 53, which is fixedly installed on one side of the outer wall of the housing 2. A rotating shaft is fixedly installed at one end of the output shaft of the grinding motor 53, and a grinding roller 51 is fixedly installed at the other end of the rotating shaft. A drive pulley 52 is fixedly installed on the outside of the rotating shaft. The grinding roller 51 is located inside the grinding inner shell 7, and the grinding inner shell 7 has a plurality of screening holes inside.

[0050] The driven component 8 includes a reciprocating screw 83, which is rotatably mounted inside the housing 2. A driven pulley 82 is fixedly mounted at one end of the reciprocating screw 83. Two screw limiting sleeves 84 are fixedly mounted on the outside of the reciprocating screw 83. The drive pulley 52 and the driven pulley 82 are both located in the side cavity of the housing 2. The drive pulley 52 and the driven pulley 82 are connected by a transmission belt 81.

[0051] The hybrid coating mechanism 9 includes a moving component 91, which is threaded onto the outside of the reciprocating screw 83. The moving component 91 includes a threaded moving bar 916, and an inner mounting groove 915 is provided inside the threaded moving bar 916. An internal spring 914 is fixedly installed inside the inner mounting groove 915. A telescopic frame 913 is fixedly installed on the top of the internal spring 914. One end of the telescopic frame 913 is slidably connected to the inner mounting groove 915. An arc-shaped top plate 912 is fixedly installed on the top of the telescopic frame 913. A movable cleaning pad 911 is fixedly installed on the top surface of the arc-shaped top plate 912. The outer surface of the movable cleaning pad 911 is in close contact with and pressed against the bottom surface of the grinding inner shell 7.

[0052] The threaded moving bar 916 has a through hole inside, and a movable mixing and coating component 94 is rotatably installed in the through hole. The movable mixing and coating component 94 includes a mounting shaft 943, which is rotatably installed in the through hole. A mixing and coating material plate 941 and a gear 942 are fixedly installed on the outside of the mounting shaft 943. The gear 942 is meshed with the built-in rack 11.

[0053] The specific implementation method is as follows: When the equipment is in use, the graphite negative electrode material is added into the housing 2 through the feed port 1. The material falls into the grinding inner housing 7. At this time, the grinding motor 53 is turned on. The grinding motor 53 can drive the drive pulley 52 and the grinding roller 51 to rotate. The grinding roller 51 can grind the added material, so that the material falls through the screen hole in powder form. In the above process, the drive pulley 52 can drive the driven pulley 82 to rotate through the transmission belt 81. The reciprocating screw 83 can rotate, causing the mixing and coating mechanism 9 installed on it to move back and forth. When it moves, it can drive the moving mixing and coating component 94 to move synchronously. The gear 942 can mesh with the built-in rack 11 during the movement, driving the mixing and coating material plate 941 to rotate, and mixing and coating the material.

[0054] This design organically combines the grinding process of graphite materials with the subsequent coating process of graphite materials through the combination of various structures. It can complete different operation steps at the same time, simplify the overall process flow, reduce equipment costs, improve the utilization rate of work space, and realize the moving and mixing treatment of materials, thereby effectively improving the uniformity and effectiveness of material mixing and coating, and greatly improving the actual application effect of the overall equipment.

[0055] Furthermore, during the movement of the mixing and coating mechanism 9, the movable cleaning pad 911 set on its top can circulate and clean the bottom of the grinding inner shell 7, thereby cleaning off some of the graphite powder adhering to the wall and avoiding waste. Since the arc-shaped top plate 912 is retractable, the arc-shaped top plate 912 can continuously apply pressure to the grinding inner shell 7 under the action of the built-in spring 914, ensuring the thorough cleaning of the adhering material.

[0056] Mounting holes are provided on both outer walls of the threaded moving bar 916. A traveling roller 92 is rotatably mounted in the mounting holes via a rotating shaft. A plurality of unblocking protrusions 93 are provided on the outer surface of the traveling roller 92. The traveling roller 92 is in rolling connection with the particle screen plate 10.

[0057] The specific implementation method is as follows: When the mixing and coating mechanism 9 moves back and forth, the traveling roller 92 can also roll back and forth on the granule screen plate 10. The unblocking protrusions 93 provided on its outer surface can be embedded in the screen holes of the granule screen plate 10 during the movement, so as to unblock the screen holes and avoid the accumulation of a large amount of coating material, which would cause the granule screen plate 10 to be blocked. At the same time, the rolling traveling roller 92 can also ensure the stability of the overall movement of the mixing and coating mechanism 9 and improve the application effect of the equipment.

[0058] The circulating material guiding assembly 6 includes a discharge shell 61. A material trough is provided on one outer wall of the housing 2. The discharge shell 61 is fixedly installed in the material trough. A circulating material guiding pipe 62 is fixedly installed on one outer wall of the discharge shell 61. A suction pump 63 is fixedly installed on the outside of the circulating material guiding pipe 62. One end of the circulating material guiding pipe 62 passes through and extends into the interior of the housing 2. A suction plate 64 is fixedly installed on one end of the circulating material guiding pipe 62. A plurality of suction holes are provided on the outer surface of the suction plate 64.

[0059] The receiving assembly 4 includes a receiving box 43, which is fixedly installed at the bottom of the housing 2. Two guide plates 42 are fixedly installed inside the receiving box 43. Discharge ports 41 are provided on both sides of the receiving box 43, and baffle plates are installed inside the discharge ports 41 via hinges.

[0060] The specific implementation method is as follows: When coating materials, the coating material is directly introduced into the machine housing 2 through the feeding port, and the suction pump 63 is turned on. The suction pump 63 can draw the mixed coating material in the machine housing 2 into the machine housing 2 through the suction plate 64, and then reintroduce it into the machine housing 2 through the discharge shell 61. This process is repeated to achieve the cyclic mixing and coating treatment of the material. Finally, the coated material that meets the particle size requirements can be introduced into the receiving box 43 through the particle sieve plate 10, and then dispersed into the discharge ports 41 on both sides through the two guide inclined plates 42, ready for subsequent material collection.

[0061] This design enables the cyclical mixing and coating of materials, which greatly improves the yield of the final coating material and ensures the comprehensiveness and thoroughness of the coating operation.

[0062] This article also discloses a continuous coating and granulation production method for graphite anode materials, including the following steps:

[0063] S1. When using this equipment, the graphite negative electrode material is added into the housing 2 through the feed port 1, and the material falls into the grinding inner housing 7.

[0064] S2. At this time, the grinding motor 53 is turned on. The grinding motor 53 can drive the drive pulley 52 and the grinding roller 51 to rotate. The grinding roller 51 can grind the added material, so that the material is powdered and falls through the screen hole. During the above process, the drive pulley 52 can drive the driven pulley 82 to rotate through the transmission belt 81. The reciprocating screw 83 can rotate, causing the mixing and coating mechanism 9 installed on it to move back and forth. When it moves, it can drive the moving mixing and coating component 94 to move synchronously. The gear 942 can mesh with the built-in rack 11 during movement, driving the mixing and coating material plate 941 to rotate and mix and coat the material.

[0065] S3. During the movement of the mixing and coating mechanism 9, the movable cleaning pad 911 set on its top can circulate and clean the bottom of the grinding inner shell 7, thereby cleaning off some of the graphite powder hanging on the wall and avoiding waste. Since the arc-shaped top plate 912 is retractable, the arc-shaped top plate 912 can continuously apply pressure to the grinding inner shell 7 under the action of the built-in spring 914 to ensure the thorough cleaning of the adhering material.

[0066] S4. When coating materials, the coating material is directly introduced into the machine housing 2 through the feeding port, and the suction pump 63 is turned on. The suction pump 63 can draw the mixed coating material in the machine housing 2 through the suction plate 64 and reintroduce it into the machine housing 2 through the discharge shell 61. This process is repeated to achieve the cyclic mixing and coating treatment of the material. Finally, the coated material that meets the particle size requirements can be introduced into the receiving box 43 through the particle sieve plate 10 and dispersed into the discharge ports 41 on both sides through the two guide inclined plates 42, ready for subsequent material collection.

[0067] S5. When the mixing and coating mechanism 9 moves back and forth, the traveling roller 92 can also roll back and forth on the granule screen plate 10. The unblocking protrusions 93 on its outer surface can be embedded in the screen holes of the granule screen plate 10 during the movement, so as to unblock the screen holes and avoid the accumulation of a large amount of coating material, which would cause the granule screen plate 10 to be blocked. At the same time, the rolling traveling roller 92 can also ensure the stability of the overall movement of the mixing and coating mechanism 9.

[0068] Working principle: When using this equipment, the graphite negative electrode material is added into the housing 2 through the feed port 1, and the material falls into the grinding inner housing 7. At this time, the grinding motor 53 is turned on, which drives the drive pulley 52 and the grinding roller 51 to rotate. The grinding roller 51 can grind the added material, so that the material falls through the screen hole in powder form. During the above process, the drive pulley 52 can drive the driven pulley 82 to rotate through the transmission belt 81. The reciprocating screw 83 can rotate, causing the mixing and coating mechanism 9 installed on it to move back and forth. When it moves, it can drive the moving mixing and coating component 94 to move synchronously. The gear 942 can mesh with the built-in rack 11 during movement, driving the mixing and coating plate 941 to rotate, and mixing and coating the material.

[0069] During the movement of the mixing and coating mechanism 9, the movable cleaning pad 911 set on its top can circulate and clean the bottom of the grinding inner shell 7, thereby cleaning off some of the graphite powder hanging on the wall and avoiding waste. Since the arc-shaped top plate 912 is retractable, the arc-shaped top plate 912 can continuously apply pressure to the grinding inner shell 7 under the action of the built-in spring 914 to ensure the thorough cleaning of the adhering material.

[0070] During material coating, the coating material is directly introduced into the housing 2 through the feeding port, and the suction pump 63 is turned on. The suction pump 63 can draw the mixed coating material in the housing 2 into the housing 2 through the suction plate 64, and then reintroduce it into the housing 2 through the discharge shell 61. This process is repeated to achieve the cyclic mixing and coating of the material. Finally, the coated material that meets the particle size requirements can be introduced into the receiving box 43 through the particle screen plate 10. It is then dispersed into the discharge ports 41 on both sides by two guide inclined plates 42, ready for subsequent material collection. When the mixing and coating mechanism 9 moves back and forth, the traveling roller 92 can also roll back and forth on the particle screen plate 10. The unblocking protrusions 93 on its outer surface can embed into the screen holes of the particle screen plate 10 during the movement, thereby unblocking the screen holes and preventing the accumulation of a large amount of coating material, which would cause the particle screen plate 10 to become blocked. At the same time, the rolling traveling roller 92 can also ensure the stability of the overall movement of the mixing and coating mechanism 9.

[0071] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A graphite negative electrode material continuous coating granulation production device, comprising a machine shell (2), characterized in that: The top surface of the shell (2) is fixedly installed with an inlet (1), the outside of the shell (2) is hingedly installed with a machine door (3), the inside of the shell (2) is fixedly installed with a grinding inner shell (7), the bottom of the shell (2) is provided with a particle sieve plate (10), and the inside of the shell (2) is transversely fixedly installed with two built-in racks (11); the bottom of the shell (2) is fixedly installed with a material collecting assembly (4) for collecting the final coated particles, the lateral outer wall of the shell (2) is provided with a grinding assembly (5) for grinding the graphite negative electrode material, the rear lateral outer wall of the shell (2) is provided with a feeding port and two circulating material guiding assemblies (6) for recycling and releasing the graphite negative electrode coated material, and the inside of the shell (2) is rotatably installed with a driven assembly (8) for reciprocating driving the mixing and coating mechanism (9); The grinding assembly (5) comprises a grinding motor (53) fixedly installed on the lateral outer wall of the shell (2), and the output shaft of the grinding motor (53) is fixedly installed with a rotating shaft, and the rotating shaft is fixedly installed with a grinding roller (51), and the outside of the rotating shaft is fixedly installed with a driving belt pulley (52); The driven assembly (8) comprises a reciprocating lead screw (83) rotatably installed in the inside of the shell (2), and the reciprocating lead screw (83) is fixedly installed with a driven belt pulley (82) at one end, and the reciprocating lead screw (83) is fixedly installed with two lead screw limiting sleeves (84) on the outside, and the driving belt pulley (52) and the driven belt pulley (82) are located in the lateral cavity of the shell (2), and the driving belt pulley (52) and the driven belt pulley (82) are connected through a transmission belt (81); The mixing and coating mechanism (9) comprises a moving assembly (91) threadedly installed on the outside of the reciprocating lead screw (83), and the moving assembly (91) comprises a threaded moving strip (916), and the inside of the threaded moving strip (916) is provided with an installation inner groove (915), and the inside of the installation inner groove (915) is fixedly installed with an inner spring (914); The top end of the inner spring (914) is fixedly installed with an extension frame (913), one end of the extension frame (913) is slidably connected with the installation inner groove (915), the top end of the extension frame (913) is fixedly installed with an arc-shaped top plate (912), the top surface of the arc-shaped top plate (912) is fixedly installed with a moving cleaning pad (911), and the outer surface of the moving cleaning pad (911) is in close contact with and extruded against the bottom surface of the grinding inner shell (7). The circulating material guiding assembly (6) comprises a material outlet shell (61), a material groove is arranged on one side outer wall of the machine shell (2), the material outlet shell (61) is fixedly installed in the material groove, a circulating material guiding pipe (62) is fixedly installed on one side outer wall of the material outlet shell (61), an external material suction pump (63) is fixedly installed on the circulating material guiding pipe (62), one end of the circulating material guiding pipe (62) penetrates and extends to the inside of the machine shell (2), a material suction plate (64) is fixedly installed on one end of the circulating material guiding pipe (62), and a plurality of material suction holes are arranged on the outer surface of the material suction plate (64); The inside of the screw moving strip (916) is provided with a through hole, and a moving and mixing coating assembly (94) is rotatably installed in the through hole, the moving and mixing coating assembly (94) comprises an installation shaft (943), the installation shaft (943) is rotatably installed in the through hole, and a mixing coating material plate (941) and a gear (942) are fixedly installed on the outside of the installation shaft (943); the gear (942) and the built-in rack (11) are in meshing connection.

2. The continuous coating granulation production device for graphite negative electrode material according to claim 1, characterized in that, The grinding roller (51) is located on the inside of the grinding inner shell (7), and a plurality of screening holes are arranged in the inside of the grinding inner shell (7).

3. The continuous coating granulation production device for graphite negative electrode material according to claim 2, characterized in that, The two side outer walls of the screw moving strip (916) are provided with installation holes, walking rollers (92) are rotatably installed in the installation holes through rotating shafts, a plurality of dredging convex particles (93) are arranged on the outer surface of the walking rollers (92), and the walking rollers (92) are in rolling connection with the particle screening plate (10).

4. The continuous coating granulation production device for graphite negative electrode material according to claim 3, characterized in that, The material collecting assembly (4) comprises a material collecting box (43), the material collecting box (43) is fixedly installed at the bottom of the machine shell (2), two material guiding inclined plates (42) are fixedly installed in the inside of the material collecting box (43), discharge ports (41) are arranged on the two sides of the material collecting box (43), and material blocking plates are installed in the discharge ports (41) through hinges.

5. A continuous coating and granulation production method of graphite negative electrode material, using the production device of claim 4, characterized in that, The method comprises the following steps: S1. When the device is used, the graphite negative electrode material is added into the machine shell (2) through the feeding port (1), and the material falls into the grinding inner shell (7); S2. At this time, the grinding motor (53) is started, the grinding motor (53) can drive the driving pulley (52) and the grinding roller (51) to rotate, the grinding roller (51) can grind the added material into powder, and the powder falls through the screening holes; in the above process, the driving pulley (52) can drive the driven pulley (82) to rotate through the transmission belt (81), the reciprocating lead screw (83) can rotate, the mixing and coating mechanism (9) installed thereon can reciprocate, the moving and mixing coating assembly (94) can be driven to move synchronously, the gear (942) can mesh with the built-in rack (11) during movement, the mixing and coating material plate (941) is driven to rotate, and the material is mixed and coated. S3, the moving cleaning pad (911) arranged at the top of the mixed coating mechanism (9) can circulate and clean the bottom of the grinding inner shell (7) during the movement, so as to clean some wall-hung graphite powder and avoid waste. Since the arc-shaped top plate (912) is telescopic, the arc-shaped top plate (912) can continuously give the grinding inner shell (7) pressure under the action of the built-in spring (914), so as to ensure the thoroughness of the cleaning of the adhered material. S4, when the material coating is carried out, the coating material is directly introduced into the machine shell (2) through the feeding port, and the material pump (63) is opened. The material pump (63) can suck the mixed coating material in the machine shell (2) into the machine shell (2) through the suction plate (64) and then introduce it into the machine shell (2) through the discharge shell (61). In this way, the material is repeatedly mixed and coated, and finally the coated material that meets the particle size requirement can be introduced into the receiving box (43) through the particle screening plate (10), and then discharged through the two guide plates (42) on both sides of the discharge port (41). The material can be taken out later. S5, when the mixed coating mechanism (9) moves back and forth, the walking roller (92) can also roll back and forth on the particle screening plate (10). The through convex particles (93) arranged on the outer surface of the walking roller (92) can be embedded in the screen holes of the particle screening plate (10) during walking, so as to realize the dredging of the screen holes and avoid the blockage of the particle screening plate (10) caused by the accumulation of a large amount of coated material. At the same time, the rolling walking roller (92) can also ensure the stability of the movement of the whole mixed coating mechanism (9).

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