Graphite powder surface treatment apparatus

Abstract

The utility model relates to graphite powder processing technical field discloses graphite powder surface treatment equipment, including mixing bin and feed slot, the mixing bin left upper corner fixedly connected with feed bin, the feed bin top cover is equipped with the powder cover, the powder cover top intercommunication has the feed pipe, the powder cover bottom fixedly installed with feed slot, the feed bin middle part fixed mounting has the millstone, feed slot bottom fixedly connected with the grinding motor, grinding motor output shaft swing assembly to the millstone center, the grinding motor output shaft top fixedly bushed with the grinding bar, the grinding bar is located the millstone surface rolling. The utility model discloses through being provided with feed pipe, powder cover, feed bin, millstone, grinding bar and grinding motor, has realized the pregrinding treatment of granular modifier, carries out the crushing and scattering before the particle enters the mixing bin, reduces the particle size difference, promotes the subsequent mixing uniformity, avoids the big granule mass modifier mixing into the graphite powder and forming the reunion simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of graphite powder processing technology, specifically to graphite powder surface treatment equipment. Background Technology

[0002] Graphite powder is a widely used material, used in industries such as batteries, conductive coatings, and high-temperature resistant materials. Graphite powder itself is relatively inert and does not easily bond with other materials, so many processes modify its surface before use.

[0003] A common modification method is to add some particulate modifiers, such as silica powder, borate powder, coated ceramic microparticles, etc., and mix these powders with graphite powder. Through physical mixing with graphite powder, these modifiers achieve surface coating, adsorption or local reaction, thereby forming a stable modified layer on the surface of graphite powder particles.

[0004] In actual operation, the graphite powder surface treatment equipment used often encounters problems such as agglomeration and clumping due to the granular modifier during transportation and storage. Once the modifier enters the mixing silo in the form of lumps or irregular agglomerates, it will not only cause uneven mixing and dead zones, but may also lead to material accumulation, affecting mixing efficiency and uniformity of modification.

[0005] Therefore, graphite powder surface treatment equipment is needed to solve the above-mentioned technical defects. Utility Model Content

[0006] The purpose of this invention is to provide a graphite powder surface treatment device to solve the problem mentioned in the background art that the granular modifier is prone to agglomeration and clumping due to moisture or compaction during transportation and storage.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a graphite powder surface treatment device, including a mixing hopper and a feeding trough. A feeding hopper is fixedly connected to the upper left corner of the mixing hopper. A powder cover is provided on the top of the feeding hopper. A feeding pipe is connected to the top of the powder cover. A feeding trough is fixedly provided at the bottom of the powder cover. A grinding disc is fixedly installed in the middle of the feeding hopper. A grinding motor is fixedly connected to the bottom of the feeding trough. The output shaft of the grinding motor is movably assembled to the center of the grinding disc. A grinding rod is fixedly sleeved on the top of the output shaft of the grinding motor. The grinding rod rolls on the surface of the grinding disc.

[0008] As a further technical solution of this utility model, the grinding disc is disc-shaped, and the length of the grinding rod is greater than the radius of the grinding disc.

[0009] As a further technical solution of this utility model, a PLC controller is installed on the left side of the mixing hopper, a gearbox is fixedly connected to the top of the mixing hopper, a mixing motor is fixedly connected to the top of the gearbox, a drive gear is fixedly sleeved on the output shaft of the mixing motor, driven gears are meshed on both sides of the drive gear, and a stirring frame is fixedly connected to the bottom of each driven gear.

[0010] As a further technical solution of this utility model, the stirring racks all extend into the inner cavity of the mixing chamber, and multiple sets of PLC controllers are evenly distributed outside the stirring racks, with the stirring rods outside the two sets of stirring racks staggered in the horizontal direction.

[0011] As a further technical solution of this utility model, scrapers are fixedly connected to the outer wall of the mixing rack, and the shape of the scrapers fits the inner wall of the mixing chamber.

[0012] As a further technical solution of this utility model, a discharge port is provided at the bottom of the mixing hopper, and movable plates are slidably connected to both sides of the bottom of the mixing hopper. A spring rod is fixed to one side of each movable plate, and a vibrating screen is fixedly connected to the other side of each spring rod. Limiting plates are welded to both sides of the bottom of the mixing hopper, and the rod of the spring rod moves through the limiting plate. A material leveling motor is fixed to the left side of the bottom of the mixing hopper, and an eccentric disk is fixedly connected above the material leveling motor. The eccentric disk abuts against the movable plate, and a powder conveyor belt is provided below the vibrating screen.

[0013] Compared with the prior art, the beneficial effects of this utility model are: by setting up a feed pipe, powder cover, feed hopper, grinding disc, grinding rod and grinding motor, the pre-grinding treatment of granular modifier is realized. Before the particles enter the mixing hopper, they are crushed and dispersed to reduce the particle size difference and improve the uniformity of subsequent mixing. At the same time, it avoids large particle clumps of modifier from being mixed into graphite powder and forming agglomerates. By incorporating a mixing motor, gearbox, drive gear, driven gear, two sets of mixing racks, staggered mixing rods, and wall-mounted scrapers, the graphite powder and granular modifier are fully agitated and sheared in the mixing chamber. Combined with the wall-mounted cleaning action of the scrapers, energy consumption is reduced. By incorporating a discharge port, eccentric disc, uniform motor, movable plate, spring rod, limit plate, vibrating mesh, and powder conveyor belt, the modified graphite powder is vibrated and loosened during discharge. The high-frequency lateral vibration of the vibrating mesh further stratifies and expands the mixed powder before it falls, reducing particle adhesion and facilitating downstream drying, conveying, or packaging. Attached Figure Description

[0014] Figure 1 This is a frontal cross-sectional view of the present invention. Figure 2 This is a front view cross-sectional structural diagram of the feed hopper of this utility model; Figure 3 This is a top view schematic diagram of the eccentric disk structure of this utility model; Figure 4 This is a top view schematic diagram of the grinding disc structure of this utility model.

[0015] In the diagram: 1. Mixing bin; 2. Gearbox; 3. Driven gear; 4. Drive gear; 5. Mixing motor; 6. Mixing rack; 7. Feed pipe; 8. Powder cover; 9. Feeding bin; 10. Grinding rod; 11. Grinding disc; 12. Grinding motor; 13. Feed trough; 14. PLC controller; 15. Mixing rod; 16. Scraper; 17. Discharge port; 18. Eccentric disc; 19. Uniform motor; 20. Movable plate; 21. Spring rod; 22. Limiting plate; 23. Vibrating net; 24. Powder conveyor belt. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-4 An embodiment of this utility model provides a graphite powder surface treatment device, including a mixing bin 1 and a feeding trough 13. A feeding bin 9 is fixedly connected to the upper left corner of the mixing bin 1. A powder cover 8 is provided at the top of the feeding bin 9. A feeding pipe 7 is connected to the top of the powder cover 8. A feeding trough 13 is fixed at the bottom of the powder cover 8. A grinding disc 11 is fixedly installed in the middle of the feeding bin 9. A grinding motor 12 is fixedly connected to the bottom of the feeding trough 13. The output shaft of the grinding motor 12 is movably assembled to the center of the grinding disc 11. A grinding rod 10 is fixedly sleeved at the top of the output shaft of the grinding motor 12. The grinding rod 10 rolls on the surface of the grinding disc 11. The grinding disc 11 is disc-shaped, and the length of the grinding rod 10 is greater than the radius of the grinding disc 11. Specifically, such as Figure 1 , Figure 2 and Figure 4 As shown, the modified liquid or surface oxidant is introduced into the powder hood 8 through the feed pipe 7. The liquid is evenly sprinkled onto the surface of the grinding disc 11 inside the feed hopper 9. After the grinding motor 12 is started, it drives the output shaft to rotate. The top of the output shaft is fixedly connected to the grinding rod 10. The grinding rod 10 makes a circular motion on the surface of the grinding disc 11, crushing the modified agent falling on it while moving, so that the agglomerates or viscous agents are dispersed and the fluidity is enhanced. The modified liquid, after preliminary grinding treatment, enters the mixing hopper 1 through the feed trough 13, which helps to achieve uniform contact and processing with the graphite powder particles in the subsequent process.

[0018] A PLC controller 14 is installed on the left side of the mixing silo 1. A gearbox 2 is fixedly connected to the top of the mixing silo 1. A mixing motor 5 is fixedly connected to the top of the gearbox 2. A drive gear 4 is fixedly sleeved on the output shaft of the mixing motor 5. Driven gears 3 are meshed on both sides of the drive gear 4. A stirring frame 6 is fixedly connected to the bottom of each driven gear 3. The stirring frame 6 extends into the inner cavity of the mixing silo 1. Multiple sets of PLC controllers 14 are evenly distributed outside the stirring frame 6. The stirring rods 15 outside the two sets of stirring frames 6 are staggered in the horizontal direction. Scrapers 16 are fixedly connected to the outer wall of the stirring frame 6. The shape of the scraper 16 fits the inner wall of the mixing silo 1. Specifically, such as Figure 1 As shown, after the mixing motor 5 starts, it drives the drive gear 4 to rotate. The drive gear 4 meshes with two sets of driven gears 3, causing the two sets of stirring frames 6 to rotate in opposite directions. Multiple sets of stirring rods 15 are distributed on the stirring frame 6, with the adjacent stirring rods 15 on both sides being staggered. This is used to stir the mixture of graphite powder and modifier, enhance the contact and fusion between particles, and a scraper 16 is fixed on the outer wall of the stirring frame 6. The scraper 16 moves against the inner wall of the mixing chamber 1 and rotates synchronously with the stirring process to clean the powder adhering to the wall, reducing the accumulation of powder residue and hot spots.

[0019] A discharge port 17 is provided at the bottom of the mixing silo 1. Movable plates 20 are slidably connected to both sides of the bottom of the mixing silo 1. A spring rod 21 is fixed to one side of each movable plate 20. A vibrating screen 23 is fixedly connected to the other side of the spring rod 21. Limiting plates 22 are welded to both sides of the bottom of the mixing silo 1. The rod of the spring rod 21 moves through the limiting plate 22. A uniform material motor 19 is fixed to the left side of the bottom of the mixing silo 1. An eccentric disc 18 is fixedly connected above the uniform material motor 19. The eccentric disc 18 abuts against the movable plate 20. A powder conveyor belt 24 is provided below the vibrating screen 23. Specifically, such as Figure 1 and Figure 3 As shown, the graphite powder after mixing is discharged from the outlet 17 and falls onto the vibrating net 23 below the outlet 17. The uniform motor 19 drives the eccentric disk 18 to rotate. The eccentric disk 18 abuts against the movable plate 20, causing the two sets of movable plates 20 to move back and forth. The movable plate 20 is connected to a spring rod 21. The spring rod 21 passes through the limiting plate 22 and is connected to the vibrating net 23 to form an elastic vibration guiding structure, which makes the vibrating net 23 vibrate at high speed in the horizontal plane, causing the graphite powder particles to spread and distribute rapidly, avoiding adhesion or agglomeration. Finally, the powder falls evenly onto the powder conveyor belt 24 and is sent to the subsequent drying or packaging process.

[0020] Working principle: During use, granular modifiers such as inorganic coated powder, quartz powder, silica, and borates are fed into the powder hood 8 through the feed pipe 7 and fall into the feed hopper 9. Under gravity, they are distributed onto the surface of the grinding disc 11. After the grinding motor 12 is started, it drives the output shaft to rotate. The top of the output shaft is fitted with a grinding rod 10, which rolls circumferentially on the surface of the grinding disc 11 to crush, shear, and disperse the granular modifiers, preventing large particles or slight agglomerations from directly entering the mixing hopper 1. The ground modifier particles fall into the mixing hopper 1 through the feed trough 13 and make initial contact with the pre-added graphite powder. Subsequently, the mixing motor 5 is started, driving the drive gear 4 in the gearbox 2 to rotate. The drive gear 4 meshes with the driven gear 3 on both sides, thereby driving the two sets of stirring racks 6 to rotate in opposite directions. The outer ring of the stirring rack 6 is evenly rotated. Multiple sets of stirring rods 15 are evenly distributed, with adjacent stirring rods 15 staggered. During the stirring process, graphite powder particles and modifier particles are continuously mixed and contacted in high-speed shearing, tumbling and collision. Through mechanical force, particle coating, surface adsorption and physical compounding processes are achieved. The scraper 16 on the outer wall of the stirring frame 6 runs along the wall during rotation, continuously scraping the powder attached to the inner wall back into the chamber, keeping the material flow in the stirring chamber smooth. After the mixing process is completed, the powder is discharged through the bottom outlet 17 and falls onto the vibrating net 23 below. At this time, the uniform material motor 19 drives the eccentric disk 18 to rotate. The eccentric disk 18 abuts against the movable plates 20 on both sides, driving the spring rod 21 to generate horizontal reciprocating vibration of the vibrating net 23, so that the graphite powder and modified particles are further loosened and fall evenly onto the powder conveyor belt 24, and enter the subsequent drying, screening or packaging stages.

[0021] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A graphite powder surface treatment apparatus comprising a mixing bin (1) and a feed slot (13), characterized in that: The mixing hopper (1) is fixedly connected to the upper left corner of the feeding hopper (9). The top of the feeding hopper (9) is covered with a powder cover (8). The top of the powder cover (8) is connected to a feeding pipe (7). The bottom of the powder cover (8) is fixed with a feeding trough (13). A grinding disc (11) is fixedly installed in the middle of the feeding hopper (9). A grinding motor (12) is fixedly connected to the bottom of the feeding trough (13). The output shaft of the grinding motor (12) is movably assembled to the center of the grinding disc (11). A grinding rod (10) is fixedly sleeved on the top of the output shaft of the grinding motor (12). The grinding rod (10) rolls on the surface of the grinding disc (11).

2. The graphite powder surface treatment apparatus according to claim 1, characterized by: The grinding disc (11) is disc-shaped, and the length of the grinding rod (10) is greater than the radius of the grinding disc (11).

3. The graphite powder surface treatment equipment according to claim 1, characterized in that: A PLC controller (14) is installed on the left side of the mixing silo (1). A gearbox (2) is fixedly connected to the top of the mixing silo (1). A mixing motor (5) is fixedly connected to the top of the gearbox (2). A drive gear (4) is fixedly sleeved on the output shaft of the mixing motor (5). Driven gears (3) are meshed on both sides of the drive gear (4). A stirring rack (6) is fixedly connected to the bottom of each driven gear (3).

4. The graphite powder surface treatment equipment according to claim 3, characterized in that: The stirring racks (6) all extend into the inner cavity of the mixing bin (1). Multiple sets of PLC controllers (14) are evenly distributed outside the stirring racks (6). The stirring rods (15) outside the two sets of stirring racks (6) are staggered in the horizontal direction.

5. The graphite powder surface treatment equipment according to claim 3, characterized in that: The outer wall of the mixing rack (6) is fixedly connected with scrapers (16), and the shape of the scrapers (16) is in contact with the inner wall of the mixing bin (1).

6. The graphite powder surface treatment equipment according to claim 1, characterized in that: The mixing silo (1) is provided with a discharge port (17) at the bottom end. Movable plates (20) are slidably connected to both sides of the bottom end of the mixing silo (1). A spring rod (21) is fixed on one side of each movable plate (20). A vibrating net (23) is fixedly connected to the other side of the spring rod (21). Limiting plates (22) are welded to both sides of the bottom end of the mixing silo (1). The rod of the spring rod (21) moves through the limiting plate (22). A uniform material motor (19) is fixed on the left side of the bottom of the mixing silo (1). An eccentric disk (18) is fixedly connected above the uniform material motor (19). The eccentric disk (18) abuts against the movable plate (20). A powder conveyor belt (24) is provided below the vibrating net (23).

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