Continuous coating granulation production device and method for graphite negative electrode material

Abstract

The invention discloses a graphite negative electrode material continuous coating granulation production device and method, and belongs to the technical field of granulation production, the graphite negative electrode material continuous coating granulation production device comprises a machine shell, the top surface of the machine shell is fixedly provided with a material inlet, the outer part of the machine shell is provided with a machine door through a hinge, and the inner part of the machine shell is fixedly provided with a grinding inner shell; according to the device, the grinding assembly, the driven assembly and the mixing and coating mechanism are arranged in a matched mode, through the design and combination of all the structures, the grinding process of the graphite material and the subsequent coating process of the graphite material are organically combined together, different operation steps can be completed at the same time, the whole technological process is simplified, and the equipment cost is reduced; according to the material mixing and coating device, the working space utilization rate is increased, meanwhile, moving and mixing treatment of materials can be achieved, so that the uniformity and effectiveness of material mixing and coating can be effectively improved, some wall-mounted materials can be guided in, waste of the materials is avoided, and the actual application effect of the whole device is greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of granulation production, and in particular relates to a continuous coating granulation production device and method for graphite negative electrode materials. Background Art

[0002] Graphite negative electrode material refers to the carbonaceous material used as the negative electrode of lithium-ion batteries, which is usually mixed with lithium salts to make electrolyte. It has a layered structure that can accommodate the insertion and extraction of lithium ions, so it has a high reversible capacity, good conductivity and stability, and a low lithium insertion voltage. Before the graphite negative electrode material is put into use, it needs to be coated with a mixed material on the outside, which needs to be applied to the coating granulation production device.

[0003] The Chinese patent (CN117398899A) discloses a method and device for preparing a battery graphite negative electrode material by continuous coating and granulation, including obtaining the initial mass ratio of graphite powder and binder according to the production factor table, optimizing the mass ratio, adding graphite powder and binder to mix and prepare graphite paste, and cutting and shredding the granulation equipment to form uniform particles; using an infrared module to heat the particles, and real-time detection of the temperature distribution and dynamic changes of the particles to adjust the power of the infrared module; coating the heated particles and then cooling them to obtain the finished product. By optimizing the initial mass ratio, it can respond to environmental changes or raw material quality fluctuations, and the infrared module can realize the dynamic adjustment of processing parameters during the heating process of the particles, realize feedback regulation, improve the performance, quality and consistency of the product, and obtain a graphite negative electrode material with a higher particle size uniformity, thereby improving battery performance. Although the current graphite negative electrode material coating granulation equipment can also achieve granulation, there are still some problems in its actual application. The main problem is that the grinding of graphite and the subsequent coating operation cannot be carried out at the same time, resulting in a long process flow of the overall equipment, more equipment involved, and high energy consumption. At the same time, when the graphite material is mixed and coated, the effect is not good. Some materials are not completely coated, affecting the actual application effect of the overall equipment. In order to solve the above problems, a continuous coating granulation production device and method for graphite negative electrode materials is urgently needed. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that although the current graphite negative electrode material coating granulation equipment can also achieve granulation, it still has some problems in practical application, mainly manifested in that the grinding of graphite and the subsequent coating operation cannot be carried out at the same time, resulting in a long process flow of the overall equipment, more equipment involved, and high energy consumption. At the same time, when the graphite material is mixed and coated, the effect is not good, and some materials are not completely coated, affecting the actual application effect of the overall equipment. A continuous coating granulation production device and method for graphite negative electrode materials are proposed.

[0005] In order to achieve the above-mentioned object, the present invention adopts the following technical scheme: a graphite negative electrode material continuous coating granulation production device, comprising a casing, a feeding port is fixedly installed on the top surface of the casing, a door is installed on the outside of the casing through a hinge, a grinding inner shell is fixedly installed inside the casing, a particle screening plate is arranged at the bottom of the casing, and two built-in racks are fixedly installed laterally inside the casing; A material collecting assembly is fixedly installed at the bottom of the casing, and the material collecting assembly is used for collecting the final coated particles. A grinding assembly is arranged on one side outer wall of the casing, and the grinding assembly is used for grinding graphite negative electrode materials. A feeding port and two circulating material guiding assemblies are arranged on the rear outer wall of the casing, and the circulating material guiding assemblies are used for recycling and releasing graphite negative electrode coating materials. A driven assembly is rotatably installed inside the casing, and a mixing coating mechanism is movably installed outside the driven assembly, and the mixing coating mechanism is used for stable mixed coating of graphite negative electrode materials. The driven assembly is used for reciprocating drive of the mixing coating mechanism.

[0006] As a further description of the above technical solution: The grinding assembly includes a grinding motor, which is fixedly mounted on an outer wall of one side of the casing. A rotating shaft is fixedly mounted on one end of the output shaft of the grinding motor, a grinding roller is fixedly mounted on one end of the rotating shaft, a driving pulley is fixedly mounted on the outside of the rotating shaft, the grinding roller is located on the inner side of a grinding inner shell, and a plurality of sieving holes are arranged inside the grinding inner shell.

[0007] As a further description of the above technical solution: The driven assembly includes a reciprocating screw, which is rotatably mounted inside the casing, a driven pulley is fixedly mounted on one end of the reciprocating screw, two screw limit sleeves are fixedly mounted on the outside of the reciprocating screw, the driving pulley and the driven pulley are both located in the side shell cavity of the casing, and the driving pulley and the driven pulley are connected by a transmission belt.

[0008] As a further description of the above technical solution: The mixed coating mechanism includes a moving component, which is threadedly installed on the outside of the reciprocating screw. The moving component includes a threaded moving bar, and an installation inner groove is arranged inside the threaded moving bar. A built-in spring is fixedly installed inside the installation inner groove.

[0009] As a further description of the above technical solution: A telescopic frame is fixedly installed on 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 on the top of the telescopic frame, a movable cleaning pad is fixedly installed on the top surface of the arc-shaped top plate, and the outer surface of the movable cleaning pad is in close contact with and squeezed with the bottom surface of the grinding inner shell.

[0010] As a further description of the above technical solution: The outer walls of both sides of the threaded moving strip are provided with mounting holes, and walking rollers are rotatably installed in the mounting holes through rotating shafts. A plurality of dredging convex particles are arranged on the outer surface of the walking rollers, and the walking rollers are rollingly connected with the particle screening plate.

[0011] As a further description of the above technical solution: A through hole is provided inside the threaded moving strip, and a movable mixing coating component is rotatably installed in the through hole. The movable mixing coating component includes a mounting shaft, and the mounting shaft is rotatably installed in the through hole. A mixed coating plate and a gear are fixedly installed outside the mounting shaft, and the gear and the built-in rack are meshed and connected with each other.

[0012] As a further description of the above technical solution: The circulating material guiding assembly includes a material discharge shell, a material trough is provided on one side outer wall of the shell, the material discharge shell is fixedly installed in the material trough, a circulating material guiding pipe is fixedly installed on one side outer wall of the material discharge shell, a material 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 to the interior of the shell, 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.

[0013] As a further description of the above technical solution: The material receiving assembly includes a material receiving box, which is fixedly installed at the bottom of the casing. Two material guiding inclined plates are fixedly installed inside the material receiving box. Discharge ports are provided on both sides of the material receiving box, and a material blocking plate is installed in the discharge port through a hinge.

[0014] This article also discloses a method for producing a continuous coating granulation of a graphite negative electrode material, comprising the following steps: S1. When the device is used, graphite negative electrode material is added into the housing through the feed port, and the material falls into the grinding inner housing; S2. At this time, the grinding motor is turned on, and the grinding motor can drive the driving pulley and the grinding roller to rotate. The grinding roller can grind the added material so that the material falls through the sieve hole in powder form. During the above process, the driving pulley can drive the driven pulley to rotate through the transmission belt, and the reciprocating screw can rotate to make the mixing and coating mechanism installed on it move back and forth. When it moves, it can drive the mobile mixing and coating component to move synchronously. The gear can mesh with the built-in rack during movement to drive the mixing and coating material plate to rotate, so as to mix and coat the material; S3. During the movement of the mixing and coating mechanism, the mobile cleaning pad arranged on the top thereof can circulate at the bottom of the grinding inner shell for active cleaning, so as to clean some graphite powder hanging on the wall to avoid waste. Since the arc-shaped top plate is retractable, the arc-shaped top plate can continuously apply pressure to the grinding inner shell under the action of the built-in spring to ensure the thorough cleaning of the attached materials. S4. When coating the materials, the coating materials are introduced directly into the casing through the feeding port, and the extraction pump is turned on. The extraction pump can draw the mixed coated materials in the casing through the suction plate, and re-introduce them into the casing through the discharge shell, so as to realize the cyclic mixed coating treatment of the materials. Finally, the coated materials that have completed the coating and meet the particle size requirements can be introduced into the receiving box through the particle screening plate, and are respectively dispersed at the discharge ports on both sides through the two guide inclined plates, and then they can be taken out later; S5. When the mixing and coating mechanism is moving back and forth, the walking roller can also roll back and forth on the particle screening plate. The unblocking convex particles arranged on its outer surface can be embedded in the sieve holes of the particle screening plate during the movement, so as to unblock the sieve holes and avoid the accumulation of a large amount of coating materials, which may cause the particle screening plate to be blocked. At the same time, the rolling walking roller can also ensure the stability of the movement of the whole mixing and coating mechanism.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In the present invention, a grinding assembly, a driven assembly and a mixing coating mechanism are provided in a matching manner. When the equipment is used, the graphite negative electrode material is added into the casing through the feed port, and the material falls into the grinding inner shell. At this time, the grinding motor is turned on, and the grinding motor can drive the driving pulley and the grinding roller to rotate. The grinding roller can grind the added material so that the material falls through the sieve hole in powder form. In the above process, the driving pulley can drive the driven pulley to rotate through the transmission belt, and the reciprocating screw can rotate to reciprocate the mixing coating mechanism installed thereon. When it moves, it can drive the mobile mixing coating assembly to move synchronously. The gear can mesh with the built-in rack during movement to drive the mixing coating material plate to rotate, and the material is mixed and coated. Through this design, through the combination of various structures, the grinding process of the graphite material and the subsequent coating process of the graphite material are organically combined, and different operation steps can be completed at the same time, simplifying the overall process flow, reducing the equipment cost, and improving the utilization rate of the operation space. At the same time, it can realize the mobile mixing treatment of the material, thereby effectively improving the uniformity and effectiveness of the material mixing coating, and greatly improving the actual application effect of the overall equipment.

[0016] 2. In the present invention, a retractable arc-shaped top plate is provided on the mixing and coating mechanism. During the movement of the mixing and coating mechanism, the mobile cleaning pad provided on the top thereof can circulate at the bottom of the grinding inner shell for active cleaning, thereby cleaning some graphite powder hanging on the wall to avoid waste. Since the arc-shaped top plate is retractable, the arc-shaped top plate can continuously apply pressure to the grinding inner shell under the action of the built-in spring to ensure the thoroughness of cleaning the attached material.

[0017] 3. In the present invention, a material receiving component and a circulating material guiding component are provided in a matching manner. When coating the material, the coating material is directly introduced into the casing through the feeding port, and the extraction pump is turned on. The extraction pump can draw the mixed coated material in the casing through the suction plate, and re-introduce it into the casing through the discharge shell, and repeat this process to achieve a circulating mixed coating treatment of the material. The coated material that has finally completed the coating and meets the particle size requirements can be introduced into the material receiving box through the particle screening plate, and then distributed to the discharge ports on both sides through two material guiding inclined plates, and then wait for subsequent material collection. Through this design, the circulating mixed coating treatment of the material can be achieved, the final yield of the coating material can be greatly improved, and the comprehensiveness and thoroughness of the coating operation can be ensured.

[0018] 4. In the present invention, walking rollers with a plurality of dredging convex particles are provided on both sides of the mixing and coating mechanism. When the mixing and coating mechanism is moved back and forth, the walking rollers can also roll back and forth on the particle screening plate. The dredging convex particles provided on the outer surface can be embedded in the sieve holes of the particle screening plate during the movement, so as to dredge the sieve holes and avoid the accumulation of a large amount of coating materials, which may cause the particle screening plate to be blocked. At the same time, the rolling walking rollers can also ensure the stability of the overall mixing and coating mechanism movement and improve the application effect of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of a continuous coating and granulation production device for graphite negative electrode materials.

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure from another angle of a continuous coating and granulation production device for graphite negative electrode materials.

[0021] Figure 3 It is a schematic diagram of the exploded three-dimensional structure of a continuous coating and granulation production device for graphite negative electrode materials.

[0022] Figure 4 It is a schematic diagram of the exploded three-dimensional structure of the casing in a continuous coating and granulation production device for graphite negative electrode materials.

[0023] Figure 5 The present invention is a schematic diagram of the three-dimensional structure of a circulating material guiding component in a continuous coating and granulation production device for graphite negative electrode materials.

[0024] Figure 6 The exploded three-dimensional structure diagram of a grinding component, a driven component and a mixing coating mechanism in a continuous coating granulation production device for graphite negative electrode materials.

[0025] Figure 7 It is a schematic diagram of the exploded three-dimensional structure of a mixing and coating mechanism in a continuous coating and granulation production device for graphite negative electrode materials.

[0026] Figure 8 It is a schematic diagram of the exploded three-dimensional structure of a moving component in a continuous coating and granulation production device for graphite negative electrode materials.

[0027] Fig. 9 It is a schematic diagram of the three-dimensional structure of a mobile mixing coating component in a continuous coating and granulation production device for graphite negative electrode materials.

[0028] Fig.10 A graphite negative electrode material continuous coating granulation production device Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0029] Legend: 1. Feeding port; 2. Machine housing; 3. Machine door; 4. Material receiving assembly; 41. Material discharging port; 42. Material guiding inclined plate; 43. Material receiving box; 5. Grinding assembly; 51. Grinding roller; 52. Driving pulley; 53. Grinding motor; 6. Circulating material guiding assembly; 61. Discharging housing; 62. Circulating material guiding pipe; 63. Suction pump; 64. Suction plate; 7. Grinding inner housing; 8. Driven assembly; 81. Driving belt; 82. Driven pulley; 83. Reciprocating wire Rod; 84, lead screw limit sleeve; 9, mixed coating mechanism; 91, moving assembly; 911, moving cleaning pad; 912, arc-shaped top plate; 913, telescopic frame; 914, built-in spring; 915, installation inner groove; 916, threaded moving strip; 92, walking roller; 93, dredging convex particles; 94, moving mixed coating assembly; 941, mixed coating material plate; 942, gear; 943, installation shaft; 10, particle screen material plate; 11, built-in rack. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-Figure 10 The present invention provides a technical solution: a graphite negative electrode material continuous coating granulation production device, comprising a casing 2, a feed port 1 is fixedly installed on the top surface of the casing 2, a door 3 is installed on the outside of the casing 2 through a hinge, a grinding inner shell 7 is fixedly installed inside the casing 2, a particle screening plate 10 is arranged at the bottom of the casing 2, and two built-in racks 11 are fixedly installed in the casing 2 transversely; A material receiving assembly 4 is fixedly installed at the bottom of the casing 2, and the material receiving assembly 4 is used for collecting the final coated particles. A grinding assembly 5 is arranged on one side outer wall of the casing 2, and the grinding assembly 5 is used for grinding graphite negative electrode materials. A feeding port and two circulating material guiding assemblies 6 are arranged on the rear outer wall of the casing 2, and the circulating material guiding assemblies 6 are used for recycling and releasing graphite negative electrode coating materials. A driven assembly 8 is rotatably installed inside the casing 2, and a mixing coating mechanism 9 is movably installed outside the driven assembly 8, and the mixing coating mechanism 9 is used for stable mixed coating of graphite negative electrode materials. The driven assembly 8 is used for reciprocating drive of the mixing coating mechanism 9.

[0032] The grinding assembly 5 includes a grinding motor 53, which is fixedly mounted on an outer wall of one side of the casing 2. A rotating shaft is fixedly mounted on one end of the output shaft of the grinding motor 53, a grinding roller 51 is fixedly mounted on one end of the rotating shaft, and a driving pulley 52 is fixedly mounted on the outside of the rotating shaft. The grinding roller 51 is located on the inner side of the grinding inner shell 7, and a plurality of sieving holes are arranged inside the grinding inner shell 7.

[0033] The driven assembly 8 includes a reciprocating screw 83, which is rotatably mounted inside the casing 2. A driven pulley 82 is fixedly mounted on one end of the reciprocating screw 83, and two screw limit sleeves 84 are fixedly mounted on the outside of the reciprocating screw 83. The driving pulley 52 and the driven pulley 82 are both located in the side shell cavity of the casing 2, and the driving pulley 52 and the driven pulley 82 are connected by a transmission belt 81.

[0034] The mixed coating mechanism 9 includes a moving component 91, which is threadedly mounted on the outside of the reciprocating screw 83. The moving component 91 includes a threaded moving bar 916, and an installation inner groove 915 is provided inside the threaded moving bar 916. An internal spring 914 is fixedly installed inside the installation inner 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 installation inner groove 915. An arc-shaped top plate 912 is fixedly installed on the top of the telescopic frame 913. A moving cleaning pad 911 is fixedly installed on the top surface of the arc-shaped top plate 912. The outer surface of the moving cleaning pad 911 is in close contact with and squeezed with the bottom surface of the grinding inner shell 7.

[0035] The threaded moving strip 916 is provided with a through hole inside, and a movable mixing coating component 94 is rotatably installed in the through hole. The movable mixing coating component 94 includes a mounting shaft 943, and the mounting shaft 943 is rotatably installed in the through hole. A mixed coating plate 941 and a gear 942 are fixedly installed outside the mounting shaft 943, and the gear 942 and the built-in rack 11 are meshed and connected with each other.

[0036] The specific implementation method is as follows: when the device is used, the graphite negative electrode material is added into the casing 2 through the feed port 1, and the material falls into the grinding inner shell 7. At this time, the grinding motor 53 is turned on, and 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 so that the material falls through the sieve hole in powder form. During the above process, the driving pulley 52 can drive the driven pulley 82 to rotate through the transmission belt 81, and the reciprocating screw 83 can rotate to make the mixing coating mechanism 9 installed thereon move back and forth. When it moves, it can drive the moving mixing coating component 94 to synchronously displace. The gear 942 can engage with the built-in rack 11 during movement to drive the mixing coating plate 941 to rotate, so as to mix and coat the material.

[0037] Through this design, through the combination of various structures, the grinding process of the graphite material and the subsequent coating process of the graphite material are organically combined, which can complete different operation steps at the same time, simplify the overall process flow, reduce equipment costs, and improve the utilization rate of the operating space. At the same time, it can realize the mobile mixing processing of materials, thereby effectively improving the uniformity and effectiveness of the material mixing coating, and greatly improving the actual application effect of the overall equipment.

[0038] Furthermore, when the mixing and coating mechanism 9 is moving, the mobile cleaning pad 911 arranged on the top thereof can circulate at the bottom of the grinding inner shell 7 for active cleaning, thereby cleaning some graphite powder hanging on the wall to avoid 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 thoroughness of the cleaning of the attached material.

[0039] The outer walls of both sides of the threaded moving strip 916 are provided with mounting holes, and a walking roller 92 is rotatably mounted in the mounting hole through a rotating shaft. A plurality of dredging convex particles 93 are provided on the outer surface of the walking roller 92. The walking roller 92 is rollingly connected to the particle screening plate 10. The specific implementation method is as follows: when the mixing and coating mechanism 9 is moved back and forth, the walking roller 92 can also roll back and forth on the particle screening plate 10, and the unblocking protrusions 93 arranged on its outer surface can be embedded in the sieve holes of the particle screening plate 10 during the movement, so as to realize the unblocking of the sieve holes and avoid the accumulation of a large amount of coating materials, which may cause the particle screening plate 10 to be blocked. At the same time, the rolling walking roller 92 can also ensure the stability of the movement of the entire mixing and coating mechanism 9 and improve the application effect of the equipment.

[0040] The circulating material guiding assembly 6 includes a material discharge shell 61, a material trough is provided on one side outer wall of the casing 2, the material discharge shell 61 is fixedly installed in the material trough, a circulating material guiding pipe 62 is fixedly installed on one side outer wall of the material discharge shell 61, a material extraction 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 to the interior of the casing 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 provided on the outer surface of the material suction plate 64.

[0041] The material receiving assembly 4 includes a material receiving box 43, which is fixedly installed at the bottom of the casing 2. Two material guiding inclined plates 42 are fixedly installed inside the material receiving box 43. Discharge ports 41 are provided on both sides of the material receiving box 43, and a baffle plate is installed in the discharge port 41 through a hinge.

[0042] The specific implementation method is as follows: when coating the materials, the coating materials are directly introduced into the casing 2 through the feeding port, and the extraction pump 63 is turned on. The extraction pump 63 can draw the mixed coated materials in the casing 2 through the suction plate 64, and re-introduce them into the casing 2 through the discharge shell 61, and repeat this process to realize the cyclic mixing and coating treatment of the materials. Finally, the coated materials that have completed the coating and meet the particle size requirements can be introduced into the material receiving box 43 through the particle screening plate 10, and are respectively dispersed at the discharge ports 41 on both sides through the two material guide inclined plates 42, and can be taken out later.

[0043] Through this design, the cyclic mixing and coating treatment of materials can be realized, which can greatly improve the final yield of the coating material and ensure the comprehensiveness and thoroughness of the coating operation.

[0044] This article also discloses a method for producing a continuous coating granulation of a graphite negative electrode material, comprising the following steps: S1. When the device is used, 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; S2, at this time, the grinding motor 53 is turned on, and 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 so that the material falls through the sieve hole in powder form. In the above process, the driving pulley 52 can drive the driven pulley 82 to rotate through the transmission belt 81, and the reciprocating screw 83 can rotate to make the mixing coating mechanism 9 installed thereon move back and forth. When it moves, it can drive the mobile mixing coating component 94 to move synchronously. The gear 942 can mesh with the built-in rack 11 during movement to drive the mixing coating material plate 941 to rotate, so as to mix and coat the materials; S3. During the movement of the mixing and coating mechanism 9, the mobile cleaning pad 911 arranged on the top thereof can circulate and clean the bottom of the grinding inner shell 7, so as to clean some graphite powder hanging on the wall to avoid 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 thoroughness of cleaning the attached materials. S4. When coating the material, the coating material is directly introduced into the casing 2 through the feeding port, and the extraction pump 63 is turned on. The extraction pump 63 can draw the mixed coated material in the casing 2 through the suction plate 64, and re-introduce it into the casing 2 through the discharge shell 61, and so on, so as to realize the cyclic mixing and coating treatment of the material. Finally, the coated material that has been coated and meets the particle size requirements can be introduced into the receiving box 43 through the particle screening plate 10, and dispersed to the discharge ports 41 on both sides through the two guide inclined plates 42, and then can be taken out later; S5. When the mixing and coating mechanism 9 is moving back and forth, the walking roller 92 can also roll back and forth on the particle screening plate 10. The unblocking protrusions 93 arranged on its outer surface can be embedded in the sieve holes of the particle screening plate 10 during the movement, so as to unblock the sieve holes and avoid the accumulation of a large amount of coating materials, which may cause the particle screening plate 10 to be blocked. At the same time, the rolling walking roller 92 can also ensure the stability of the movement of the entire mixing and coating mechanism 9.

[0045] Working principle: When the equipment is used, 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, and the grinding motor 53 can drive the driving pulley 52 and the grinding roller 51 to rotate, and the grinding roller 51 can grind the added material so that the material falls through the sieve hole in powder form. During the above process, the driving pulley 52 can drive the driven pulley 82 to rotate through the transmission belt 81, and the reciprocating screw 83 can rotate to make the mixing coating mechanism 9 installed thereon move back and forth, and when it moves, it can drive the mobile mixing coating component 94 to move synchronously, and the gear 942 can mesh with the built-in rack 11 during movement, drive the mixing coating material plate 941 to rotate, and mix and coat the material; During the movement of the mixing and coating mechanism 9, the mobile cleaning pad 911 arranged on the top thereof can circulate at the bottom of the grinding inner shell 7 for active cleaning, so that some graphite powder hanging on the wall can be cleaned to avoid 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 thoroughness of cleaning the attached materials. When coating the materials, the coating materials are directly introduced into the casing 2 through the feeding port, and the extraction pump 63 is turned on. The extraction pump 63 can draw the mixed coated materials in the casing 2 through the suction plate 64, and re-introduce them into the casing 2 through the discharge shell 61, and repeat this process to realize the cyclic mixing and coating treatment of the materials. Finally, the coated materials that have completed the coating and meet the particle size requirements can be introduced into the receiving box 43 through the particle screening plate 10, and are respectively dispersed at the discharge ports 41 on both sides through two material guide inclined plates 42, and are ready for subsequent material collection. When the mixing and coating mechanism 9 is reciprocatingly moved, the walking roller 92 can also roll back and forth on the particle screening plate 10, and the dredging convex particles 93 arranged on the outer surface can be embedded in the sieve holes of the particle screening plate 10 during the walking process, so as to realize the dredging of the sieve holes and avoid the accumulation of a large amount of coating materials, which may cause the particle screening plate 10 to be blocked. At the same time, the rolling walking roller 92 can also ensure the stability of the movement of the overall mixing and coating mechanism 9.

[0046] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A graphite negative electrode material continuous coating granulation production device, comprising a housing (2), characterized in that: A material inlet (1) is fixedly mounted on the top surface of the casing (2); a door (3) is mounted on the outside of the casing (2) via hinges; a grinding inner shell (7) is fixedly mounted inside the casing (2); a particle screening plate (10) is provided at the bottom of the casing (2); and two built-in racks (11) are fixedly mounted laterally inside the casing (2); A material receiving assembly (4) is fixedly mounted on the bottom of the housing (2), and the material receiving assembly (4) is used for collecting the final coated particles. A grinding assembly (5) is arranged on one side outer wall of the housing (2), and the grinding assembly (5) is used for grinding graphite negative electrode materials. A feeding port and two circulating material guiding assemblies (6) are arranged on the rear side outer wall of the housing (2), and the circulating material guiding assemblies (6) are used for recycling and releasing the graphite negative electrode coating materials. A driven assembly (8) is rotatably mounted inside the housing (2), and a mixing coating mechanism (9) is movably mounted outside the driven assembly (8), and the mixing coating mechanism (9) is used for stable mixing and coating of graphite negative electrode materials. The driven assembly (8) is used for reciprocating driving of the mixing coating mechanism (9).

2. The continuous coating and granulation production device for graphite negative electrode materials according to claim 1, characterized in that: The grinding assembly (5) comprises a grinding motor (53), the grinding motor (53) being fixedly mounted on an outer wall of one side of the housing (2), a rotating shaft being fixedly mounted on one end of the output shaft of the grinding motor (53), a grinding roller (51) being fixedly mounted on one end of the rotating shaft, a driving pulley (52) being fixedly mounted on the outside of the rotating shaft, the grinding roller (51) being located on the inner side of a grinding inner housing (7), and a plurality of sieving holes being arranged inside the grinding inner housing (7).

3. The continuous coating and granulation production device for graphite negative electrode materials according to claim 2, characterized in that: The driven assembly (8) comprises a reciprocating screw (83), the reciprocating screw (83) being rotatably mounted inside the housing (2), a driven pulley (82) being fixedly mounted on one end of the reciprocating screw (83), two screw limit sleeves (84) being fixedly mounted on the outside of the reciprocating screw (83), the driving pulley (52) and the driven pulley (82) being both located in a side shell cavity of the housing (2), and the driving pulley (52) and the driven pulley (82) being connected via a transmission belt (81).

4. The continuous coating and granulation production device for graphite negative electrode materials according to claim 3, characterized in that: The mixed coating mechanism (9) comprises a moving component (91), wherein the moving component (91) is threadedly mounted on the outside of a reciprocating screw (83), and the moving component (91) comprises a threaded moving bar (916), wherein an inner mounting groove (915) is provided inside the threaded moving bar (916), and a built-in spring (914) is fixedly mounted inside the inner mounting groove (915).

5. The continuous coating and granulation production device for graphite negative electrode materials according to claim 4, characterized in that: A telescopic frame (913) is fixedly mounted on the top of the built-in spring (914); one end of the telescopic frame (913) is slidably connected to the mounting inner groove (915); an arc-shaped top plate (912) is fixedly mounted on the top of the telescopic frame (913); a movable cleaning pad (911) is fixedly mounted on the top surface of the arc-shaped top plate (912); and 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).

6. The continuous coating and granulation production device for graphite negative electrode materials according to claim 5, characterized in that: The outer walls of both sides of the threaded moving strip (916) are provided with mounting holes, and a walking roller (92) is rotatably mounted in the mounting hole via a rotating shaft. A plurality of dredging protrusions (93) are provided on the outer surface of the walking roller (92), and the walking roller (92) is rollingly connected to the particle screening plate (10).

7. The continuous coating and granulation production device for graphite negative electrode materials according to claim 6, characterized in that: The threaded movable strip (916) is provided with a through hole inside, and a movable mixed coating component (94) is rotatably mounted in the through hole. The movable mixed coating component (94) comprises a mounting shaft (943), and the mounting shaft (943) is rotatably mounted in the through hole. A mixed coating plate (941) and a gear (942) are fixedly mounted outside the mounting shaft (943), and the gear (942) and the built-in rack (11) are meshedly connected with each other.

8. The continuous coating and granulation production device for graphite negative electrode materials according to claim 7, characterized in that: The circulating material guiding assembly (6) comprises a material discharging shell (61), a material trough is provided on one side outer wall of the casing (2), the material discharging shell (61) is fixedly installed in the material trough, a circulating material guiding pipe (62) is fixedly installed on one side outer wall of the material discharging shell (61), a material pump (63) is fixedly installed outside the circulating material guiding pipe (62), one end of the circulating material guiding pipe (62) passes through and extends to the inside of the casing (2), and 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 provided on the outer surface of the material suction plate (64).

9. The continuous coating and granulation production device for graphite negative electrode materials according to claim 8, characterized in that: The material receiving assembly (4) comprises a material receiving box (43), the material receiving box (43) being fixedly mounted on the bottom of the housing (2), two material guiding inclined plates (42) being fixedly mounted inside the material receiving box (43), and material discharge ports (41) being arranged on both sides of the material receiving box (43), and a material blocking plate being mounted inside the material discharge port (41) via a hinge.

10. A method for producing a continuous coating granulation of a graphite negative electrode material, characterized in that: The steps include: S1. When the device is used, 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); S2. At this time, the grinding motor (53) is turned on. 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 so that the material falls through the sieve hole in a powdered state. In the above process, the driving pulley (52) can drive the driven pulley (82) to rotate through the transmission belt (81). The reciprocating screw (83) can rotate to make the mixing and coating mechanism (9) installed thereon move back and forth. When the reciprocating screw (83) 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 to drive the mixing and coating material plate (941) to rotate, so as to mix and coat the material. S3. During the movement of the mixing and coating mechanism (9), the movable cleaning pad (911) arranged on the top thereof can circulate and clean the bottom of the grinding inner shell (7), thereby cleaning some graphite powder hanging on the wall to avoid 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), thereby ensuring thorough cleaning of the attached materials; S4. When coating the material, the coating material is directly introduced into the housing 2 through the feed port, and the extraction pump (63) is turned on. The extraction pump (63) can extract the mixed coated material in the housing 2 through the suction plate (64) and re-introduce it into the housing 2 through the discharge shell (61). This reciprocating process is used to achieve a cyclic mixed coating process for the material. Finally, the coated material that has been coated and meets the particle size requirements can be introduced into the receiving box (43) through the particle screening plate (10), and is respectively dispersed to the discharge ports (41) on both sides through the two guide inclined plates (42) to wait for subsequent material collection. S5. When the mixing and coating mechanism (9) is moving back and forth, the walking roller (92) can also roll back and forth on the particle screening plate (10). The unblocking protrusions (93) arranged on its outer surface can be embedded in the sieve holes of the particle screening plate (10) during the movement, so as to unblock the sieve holes and avoid the accumulation of a large amount of coating material, which may cause the particle screening plate (10) to be blocked. At the same time, the rolling walking roller (92) can also ensure the stability of the movement of the entire mixing and coating mechanism (9).

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