Spheroidizing shaper for graphite

Abstract

The utility model discloses a spheroidizing shaper for graphite, which belongs to the field of graphite spheroidizing and comprises an equipment main body, a driving motor is arranged at the bottom of the equipment main body, and an output shaft of the driving motor is fixedly connected with a rotating shaft; through the arrangement of the spheroidizing assembly, three acting forces of inclined collision, curved surface rolling and reverse shearing are realized, the graphite particles are subjected to curved surface rolling force in the moving process through volute grooves formed in a grinding disc and a base disc and auxiliary teeth on a rotating disc, and spheroidizing of the particles is further promoted; when the spheroidizing device is used for spheroidizing the graphite particles, the particles are subjected to reverse shearing force between the spheroidizing device and the spheroidizing device, the force is beneficial to eliminating burrs and unevenness on the surfaces of the particles, the spheroidized graphite particles are smoother and more round, efficient spheroidizing of the graphite particles is achieved through the synergistic effect of the triple acting force, the spheroidizing rate and the spheroidizing quality are remarkably improved, the number of times of repeated machining is reduced, and the spheroidizing efficiency is improved. And the production cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of graphite spheroidization technology, specifically relating to a spheroidizing and shaping machine for graphite. Background Technology

[0002] In the field of lithium-ion battery anode material manufacturing, natural flake graphite needs to undergo spheroidizing and shaping treatment to obtain spherical particles with high tap density and low specific surface area.

[0003] For example, CN 219899561 U discloses a novel graphite shaping machine, including a shaping machine body, a feeding hopper, a flexible feeding pipe, a cloth connecting bag, and a tightening component. The feeding hopper is fixedly connected to the top of the shaping machine, the flexible feeding pipe is fixedly connected to the top of the feeding hopper, the cloth connecting bag is fixedly connected to the top of the flexible feeding pipe, and the tightening component is fixedly installed on the top of the cloth connecting bag to tighten the top of the cloth connecting bag. In this utility model, by setting up the cloth connecting bag and the tightening component, the cloth connecting bag can be fitted onto the feeding pipe and tightened, preventing dust generated during the feeding process from being dispersed into the air and affecting the environment and the health of workers. By setting up the connecting pipe, filter box, exhaust pipe, fan, and exhaust pipe, the smoke and dust generated during the feeding process can be purified and discharged, which is in line with the concept of environmentally friendly production.

[0004] The above-mentioned solution uses a single-axis rotation structure during the molding process, resulting in a short particle residence time and a low spheroidization rate. Therefore, repeated processing is required. Furthermore, excessively high temperatures of graphite particles during spheroidization can easily lead to graphite oxidation. Therefore, this utility model provides a spheroidizing and shaping machine for graphite. Utility Model Content

[0005] The purpose of this invention is to provide a spheroidizing and shaping machine for graphite to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a spheroidizing and shaping machine for graphite, comprising a main body of the equipment, a drive motor at the bottom of the main body of the equipment, a rotating shaft fixedly connected to the output shaft of the drive motor, a spheroidizing component for graphite spheroidizing provided outside the rotating shaft, a feed pipe at the top of the main body of the equipment, a discharge pipe on one side of the bottom of the main body of the equipment, and a cooling component in the inner wall of the main body of the equipment.

[0007] In a preferred embodiment, the spheroidizing assembly includes a chassis fixedly connected to the outside of a rotating shaft, a connecting sleeve rotatably connected to the top of the rotating shaft, and a grinding disc fixedly connected to the bottom of the connecting sleeve.

[0008] In a preferred embodiment, a drive disk is fixedly connected to the top of the rotating shaft, and transmission teeth are provided on the inner wall of the bottom end of the drive disk. The top of the main body of the device has drive teeth that mesh with the transmission teeth, and the top of the connecting sleeve has external teeth that mesh with the drive teeth.

[0009] In a preferred embodiment, a rotating disk is fixedly connected to the outside of the connecting sleeve. A conical groove is provided on the top of the rotating disk, and multiple auxiliary teeth are distributed in a ring on the inner wall of the conical groove. Two connecting holes are provided on the bottom of the rotating disk.

[0010] In a preferred embodiment, the bottom of the grinding disc and the top of the chassis are provided with vortex grooves, and the grinding disc is located above the chassis.

[0011] In a preferred embodiment, the inner wall of the main body of the device is provided with a guide groove, and the outside of the rotating disk is rotatably connected to a guide wheel that is rolled inside the guide groove.

[0012] In a preferred embodiment, the cooling assembly includes a cooling tank formed in the inner wall of the main body of the equipment, with a gas supply pipe at one end of the cooling tank and an exhaust pipe at the other end of the cooling tank.

[0013] In a preferred embodiment, the cooling tank is provided with a receiving plate facing the gap between the grinding disc and the chassis, and the rotating shaft is provided with a cleaning rod on the outside between the chassis and the bottom of the inner cavity of the equipment body.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This graphite spheroidizing and shaping machine, through the setting of a spheroidizing component, achieves a triple force of tilting collision, curved surface rolling, and reverse shearing. During the spheroidizing process, the counter-rotation of the chassis and grinding disc causes the graphite particles to be subjected to tilting collision force between them. This force helps to break the original shape of the particles, laying the foundation for the subsequent spheroidizing process. At the same time, the vortex grooves opened on the grinding disc and chassis, as well as the auxiliary teeth on the rotating disc, cause the graphite particles to be subjected to curved surface rolling force during movement, further promoting the spheroidization of the particles. In addition, due to the counter-rotation of the chassis and grinding disc, the particles are also subjected to reverse shearing force between them. This force helps to eliminate burrs and unevenness on the particle surface, making the spheroidized graphite particles smoother and rounder. The synergistic effect of these three forces achieves efficient spheroidization of graphite particles, significantly improves the spheroidization rate and spheroidization quality, reduces the number of repeated processing steps, and lowers production costs.

[0016] This spheroidizing and shaping machine for graphite uses a cooling component to supply cooling gas into a cooling tank via a gas supply pipe. The cooling gas flows in the cooling tank and absorbs the heat from the processed graphite, and then is discharged through an exhaust pipe. This allows for control of the internal temperature of the equipment, preventing graphite particles from oxidizing due to excessive temperature after spheroidization and ensuring the quality of graphite spheroidization. Attached Figure Description

[0017] Figure 1 This is a front view of the structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0019] Figure 3 This is a schematic diagram showing the disassembly of the spherical component;

[0020] Figure 4 This is a top view of the spherical component.

[0021] In the diagram: 1. Main body of the equipment; 101. Feed pipe; 102. Discharge pipe; 103. Guide groove; 104. Cooling groove; 105. Receiving plate; 2. Drive motor; 3. Air supply pipe; 4. Exhaust pipe; 5. Rotating shaft; 6. Chassis; 7. Cleaning rod; 8. Drive disc; 9. Connecting sleeve; 10. Drive gear; 11. Rotating disc; 1101. Conical groove; 1102. Auxiliary gear; 1103. Connecting hole; 12. Grinding disc. Detailed Implementation

[0022] The present invention will be further described below with reference to the embodiments.

[0023] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0024] Please see Figure 1-4This utility model provides a spheroidizing and shaping machine for graphite, including a main body 1. A drive motor 2 is located at the bottom of the main body 1. A rotating shaft 5 is fixedly connected to the output shaft of the drive motor 2. A spheroidizing component for graphite spheroidization is located outside the rotating shaft 5. A feed pipe 101 is located at the top of the main body 1. The spheroidizing component includes a base 6 fixedly connected to the outside of the rotating shaft 5. A connecting sleeve 9 is rotatably connected to the top of the rotating shaft 5. The length of the rotating shaft 5 is greater than the length of the connecting sleeve 9, but the length of the section of the rotating shaft 5 from the top of the base 6 is the same as the length of the connecting sleeve 9. A grinding disc 12 is fixedly connected to the bottom of the connecting sleeve 9. A drive disc 8 is fixedly connected to the top of the rotating shaft 5. The inner wall at the bottom of the device 8 is provided with transmission teeth. The top of the main body 1 is provided with drive teeth 10 that mesh with the transmission teeth. The top of the connecting sleeve 9 is provided with external teeth that mesh with the drive teeth 10. The outside of the connecting sleeve 9 is fixedly connected to a rotating disk 11. The top of the rotating disk 11 is provided with a conical groove 1101. Multiple auxiliary teeth 1102 are distributed in a ring on the inner wall of the conical groove 1101. The bottom of the rotating disk 11 is provided with two connecting holes 1103. The bottom of the grinding disk 12 and the top of the base 6 are both provided with vortex grooves. The grinding disk 12 is located above the base 6. The inner wall of the main body 1 is provided with a guide groove 103. The outside of the rotating disk 11 is rotatably connected to a guide wheel that is rolled inside the guide groove 103.

[0025] The graphite particles to be spheroidized are fed into the equipment through the feed pipe 101 at the top of the main body 1. The graphite particles first fall into the conical groove 1101 at the top of the rotating disk 11. Multiple auxiliary teeth 1102 distributed in a ring on the inner wall of the conical groove 1101 initially disperse and guide the graphite particles, so that the graphite particles can be distributed more evenly, preparing for the subsequent spheroidization process.

[0026] When drive motor 2 starts, it drives rotating shaft 5 to rotate. Rotating shaft 5 drives chassis 6, which is fixed to the outside, to rotate. Simultaneously, drive disk 8 at the top of rotating shaft 5 rotates. The transmission teeth on the inner wall of the bottom of drive disk 8 mesh with drive teeth 10 rotating at the top of the main body 1, driving drive teeth 10 to rotate. Drive teeth 10 then mesh with the outer teeth at the top of connecting sleeve 9, thereby driving connecting sleeve 9 to rotate in the opposite direction. Connecting sleeve 9 drives grinding disk 12, which is fixed to its bottom, and rotating disk 11, which is fixed to the outside, to rotate in the opposite direction. Because chassis 6 and grinding disk 12 rotate in opposite directions... As the grinding disc rotates, the grooves on the corresponding surfaces of the base 6 and the grinding disc 12 are staggered. The graphite particles are subjected to an inclined collision force between them. This force helps to break the original shape of the particles and create conditions for spheroidization. The vortex grooves on the grinding disc 12 and the base 6 cause the graphite particles to be subjected to curved rolling pressure during the movement, which further promotes the spheroidization of the particles. The reverse rotation of the base 6 and the grinding disc 12 also causes the particles to be subjected to reverse shear force, which helps to eliminate burrs and unevenness on the particle surface, making the spheroidized graphite particles smoother and rounder.

[0027] By rotating the chassis 6 and the grinding disc 12 in opposite directions, the triple action of tilting collision, curved rolling and reverse shearing is achieved, which significantly improves the spheroidization efficiency and spheroidization quality of graphite particles, reduces the number of repeated processing, and lowers production costs. The design of the conical groove 1101 and the auxiliary teeth 1102, as well as the presence of the vortex groove, enable the graphite particles to be evenly distributed and subjected to uniform force during the spheroidization process, ensuring the uniformity and consistency of the graphite particles after spheroidization.

[0028] In this embodiment, a cooling assembly is provided in the inner wall of the main body 1. The cooling assembly includes a cooling groove 104 formed in the inner wall of the main body 1. One end of the cooling groove 104 is provided with a gas supply pipe 3, and the other end of the cooling groove 104 is provided with an exhaust pipe 4. A receiving plate 105 is provided in the cooling groove 104 facing the gap between the grinding disc 12 and the base plate 6. The receiving plate 105 faces the gap between the grinding disc 12 and the base plate 6. A cleaning rod 7 is provided on the outside of the rotating shaft 5 located between the base plate 6 and the bottom of the inner cavity of the main body 1. A discharge pipe 102 is provided on one side of the bottom of the main body 1.

[0029] During the operation of the graphite spheroidizing and shaping machine, cooling gas is transported to the cooling tank 104 in the inner wall of the main body 1 through the gas supply pipe 3. The gas supply pipe 3 continuously injects cooling gas into the cooling tank 104 to ensure that there is enough cooling medium in the cooling tank 104.

[0030] Cooling gas flows in the cooling tank 104. Since the cooling tank 104 is provided with a receiving plate 105 facing the gap between the grinding disc 12 and the chassis 6, after spheroidization, the graphite is inertially thrown onto the receiving plate 105 to achieve cooling and prevent high-temperature oxidation. The cooling gas that has absorbed heat is discharged from the main body 1 of the equipment through the exhaust pipe 4.

[0031] During the rotation of the rotating shaft 5, the cleaning rod 7, which is fixed on the outside of the rotating shaft 5 between the chassis 6 and the bottom of the inner cavity of the equipment body 1, also rotates. During the rotation, the cleaning rod 7 pushes the graphite accumulated at the bottom of the inner cavity of the equipment body 1 and discharges it through the discharge pipe 102 on one side of the bottom of the equipment body 1, thus completing the entire spheroidizing, shaping and cooling cleaning process.

[0032] The cooling components utilize the circulating flow of cooling gas within the cooling tank 104 to promptly remove heat generated at the gap between the grinding disc 12 and the chassis 6. The cooling system, through the circulation of inert gas (such as N2) within the cooling tank 104, in conjunction with the internal water-cooling channels of the grinding disc 12, controls the equipment body temperature below 80℃ and ensures that localized grinding hotspots are ≤150℃. Simultaneously, it maintains an oxygen concentration <100ppm, ensuring that the oxidation weight gain rate of graphite particles during spheroidization is <0.1%, guaranteeing product purity and electrochemical performance, and thus ensuring the purity and quality of the spheroidized graphite and improving product performance.

[0033] It should be noted that the shaping machine described above is equipped with a PLC controller, sensors (such as temperature, pressure, and flow sensors), and a human-machine interface (HMI) to control the electrical components of the shaping machine, thereby regulating and controlling the temperature, feed rate, grading speed, and airflow of the shaping machine to ensure stable particle size and tap density (e.g., tap density ≥ 0.9 g / cm³). The PLC controller, sensors, and HMI are all existing products, and the connection methods and signal processing methods between the PLC controller, sensors, and HMI are all publicly disclosed technologies. For the shaping machine of this application, since the improvement points of the technical solution do not involve the PLC controller, sensors, and HMI, and all adopt existing control programs and methods in the field, the control aspects of the shaping machine will not be described in detail.

[0034] The working principle and usage process of this utility model are as follows: First, the graphite particles to be spheroidized are fed into the equipment through the feed pipe 101 at the top of the main body 1. The graphite particles first fall into the conical groove 1101 at the top of the rotating disk 11. Multiple auxiliary teeth 1102 distributed in a ring on the inner wall of the conical groove 1101 initially disperse and guide the graphite particles, so that the natural graphite flakes can be distributed more evenly. The graphite can enter the grinding zone through the hole set in the center of 1101, preparing for the subsequent spheroidization process.

[0035] When the drive motor 2 starts, it drives the rotating shaft 5 to rotate. The rotating shaft 5 drives the chassis 6 fixed to its outside to rotate. At the same time, the drive disk 8 at the top of the rotating shaft 5 rotates accordingly. The transmission teeth on the inner wall of the bottom end of the drive disk 8 mesh with the drive teeth 10 rotating at the top of the main body 1, driving the drive teeth 10 to rotate. The drive teeth 10 also mesh with the outer teeth at the top of the connecting sleeve 9, thereby driving the connecting sleeve 9 to rotate in the opposite direction. The connecting sleeve 9 drives the grinding disk 12 fixed at its bottom end and the rotating disk 11 fixed to its outside to rotate in the opposite direction. Because the chassis 6 and the grinding disk 12 rotate in the opposite direction, the reverse rotation of the chassis 6 and the grinding disk 12 also causes the particles to be subjected to reverse shear force, which helps to eliminate burrs and unevenness on the particle surface, making the spheroidized graphite particles smoother and rounder.

[0036] During the operation of the graphite spheroidizing and shaping machine, cooling gas is transported through the gas supply pipe 3 to the cooling tank 104 in the inner wall of the main body 1 of the equipment, and the gas supply pipe 3 continuously injects cooling gas into the cooling tank 104.

[0037] Cooling gas flows in the cooling tank 104. Since the cooling tank 104 is provided with a receiving plate 105 facing the gap between the grinding disc 12 and the chassis 6, after spheroidization, the graphite is inertially thrown onto the receiving plate 105 to achieve cooling and prevent high-temperature oxidation. The cooling gas that has absorbed heat is discharged from the main body 1 of the equipment through the exhaust pipe 4.

[0038] During the rotation of the rotating shaft 5, the cleaning rod 7, which is fixed on the outside of the rotating shaft 5 between the chassis 6 and the bottom of the inner cavity of the equipment body 1, also rotates. During the rotation, the cleaning rod 7 pushes the graphite accumulated at the bottom of the inner cavity of the equipment body 1 and discharges it through the discharge pipe 102 on one side of the bottom of the equipment body 1, thus completing the entire spheroidizing, shaping and cooling cleaning process.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A spheroidizing and shaping machine for graphite, comprising a main body (1), characterized in that: The bottom of the main body (1) of the equipment is provided with a drive motor (2), and a rotating shaft (5) is fixedly connected to the output shaft of the drive motor (2). A spheroidizing component for graphite spheroidization is provided outside the rotating shaft (5). A feed pipe (101) is provided at the top of the main body (1), and a discharge pipe (102) is provided on one side of the bottom of the main body (1). A cooling component is provided in the inner wall of the main body (1). The spheroidizing component includes a chassis (6) fixedly connected to the outside of the rotating shaft (5). A connecting sleeve (9) is rotatably connected to the outside of the top end of the rotating shaft (5). A grinding disc (12) is fixedly connected to the outside of the bottom end of the connecting sleeve (9). A drive motor is fixedly connected to the top end of the rotating shaft (5). The drive disk (8) has transmission teeth on the inner wall at the bottom end. The top of the main body (1) of the device has a drive tooth (10) that meshes with the transmission tooth. The top of the connecting sleeve (9) has an outer tooth that meshes with the drive tooth (10). The outside of the connecting sleeve (9) is fixedly connected to a rotating disk (11). The top of the rotating disk (11) has a conical groove (1101). The inner wall of the conical groove (1101) has multiple auxiliary teeth (1102) arranged in a ring. The bottom of the rotating disk (11) has two connecting holes (1103). The bottom of the grinding disk (12) and the top of the base (6) both have vortex grooves. The grinding disk (12) is located above the base (6).

2. The spheroidizing and shaping machine for graphite according to claim 1, characterized in that: The inner wall of the main body (1) of the equipment is provided with a guide groove (103), and the outside of the rotating disk (11) is rotatably connected to a guide wheel that is rolled inside the guide groove (103).

3. A spheroidizing and shaping machine for graphite according to claim 2, characterized in that: The cooling assembly includes a cooling tank (104) formed in the inner wall of the main body of the equipment (1), with a gas supply pipe (3) at one end of the cooling tank (104) and an exhaust pipe (4) at the other end of the cooling tank (104).

4. A spheroidizing and shaping machine for graphite according to claim 3, characterized in that: The cooling tank (104) is provided with a support plate (105) facing the gap between the grinding disc (12) and the chassis (6), and the rotating shaft (5) is provided with a cleaning rod (7) on the outside between the chassis (6) and the bottom of the inner cavity of the equipment body (1).

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