Graphite negative electrode material demagnetization device

Abstract

The utility model provides a graphite negative material demagnetizing equipment, include: frame, magnetic separation material box, blanking mechanism and demagnetizing mechanism, wherein, the discharge plate is set up on the frame, the magnetic separation material box sets up on the frame, the blanking mechanism includes filter screen, four support components and auxiliary assembly. Graphite negative material demagnetizing equipment of the utility model embodiment, through drive source drives the rotation of the rotating roller, makes the rotating roller drive the rotation of the conveyer belt, further realizes demagnetizing through the magnetic separation roller, simultaneously, the contact block on the conveyer belt will intermittently extrude auxiliary assembly, thereby through auxiliary assembly drives filter screen to shake, avoids graphite negative material particle to block filter screen hole, further promotes the overall processing efficiency and demagnetizing effect of demagnetizing equipment, and auxiliary assembly will synchronously stir the material in the magnetic separation material box in the process of up and down shaking, makes material be able to evenly distribute on filter screen, speeds up the material flow speed.

Description

Technical Field

[0001] This utility model relates to the field of graphite anode material processing technology, and in particular to a graphite anode material demagnetization device. Background Technology

[0002] Graphite is a crystalline form of carbon, belonging to the hexagonal crystal system, and has a layered structure. This special crystal structure endows graphite with excellent physical and chemical properties, such as good electrical conductivity, thermal conductivity, lubricity, high temperature resistance, and chemical stability. In the energy field, graphite is a very important material for preparing battery anodes.

[0003] The quality of natural graphite has a significant impact on battery performance (such as capacity and cycle performance). During the mining, beneficiation, and grinding processes, natural graphite is easily mixed with metallic impurities such as iron, cobalt, and nickel, as well as magnetic mineral impurities. If these magnetic substances are not effectively removed, they will have multiple negative impacts on the performance and safety of lithium batteries. Therefore, a screening and demagnetization process is included in the production process.

[0004] Existing demagnetization methods use magnetic screens to adsorb magnetic impurities in the material onto the screen surface, while non-magnetic graphite particles fall through the screen openings, completing the screening and demagnetization process. However, in actual use, graphite particles are prone to moisture absorption, forming clumps. These clumps cannot pass through the screen openings smoothly, which not only reduces screening efficiency but also blocks the magnetic field on the screen surface, preventing the effective adsorption of magnetic impurities in the material below. At the same time, the magnetic impurities adsorbed on the screen surface gradually accumulate and clog the mesh, affecting the performance. Utility Model Content

[0005] This utility model aims to at least partially solve one of the technical problems in the above-mentioned technologies.

[0006] Therefore, one objective of this utility model is to provide a graphite anode material demagnetization device that can simultaneously stir the material in the magnetic separator box while shaking by combining auxiliary components with a filter screen. This allows the material to be evenly distributed on the filter screen, reducing the residence time of the material in the magnetic separator box, accelerating the material flow rate, and preventing graphite anode material particles from clogging the filter screen.

[0007] To achieve the above objectives, the first aspect of this utility model provides a demagnetizing device for graphite anode materials, comprising: a frame, a magnetic separator box, a feeding mechanism, and a demagnetizing mechanism, wherein a discharge plate is provided on the frame; the magnetic separator box is disposed on the frame; the feeding mechanism includes a filter screen, four support components, and an auxiliary component, wherein the filter screen is movably connected to the magnetic separator box; the four support components are equally spaced at the bottom end of the filter screen, and the end of each support component away from the filter screen is connected to the bottom end of the magnetic separator box; the auxiliary component is disposed in the magnetic separator box above the filter screen, and one end of the auxiliary component is connected to the filter screen; the demagnetizing mechanism is disposed on the frame below the feeding mechanism.

[0008] In addition, the graphite negative electrode material demagnetizing device proposed above according to this utility model may also have the following additional technical features: Specifically, the support assembly includes a fixed rod, a movable component, and a support rod. The fixed rod is disposed at the bottom end of the filter screen, and a compression spring is sleeved on the outer side of the fixed rod. The movable component is movably connected to the fixed rod, and the top end of the movable component is connected to the bottom end of the compression spring. The support rod is movably connected to the fixed rod through the movable component, and the end of the support rod away from the movable component is connected to the filter screen.

[0009] Specifically, the auxiliary components include a crossbar, a shaft tube, a stirring rod assembly, a connecting tube, a protrusion, and a vertical rod. The crossbar is disposed within the magnetic separator box; the shaft tube is movably connected to the crossbar and has a spiral groove inside; the stirring rod assembly is disposed within the magnetic separator box and connected to the shaft tube; the connecting tube is movably connected within the shaft tube, with its bottom end extending through the shaft tube and connecting to the filter screen; the protrusion is disposed on the outer wall of the connecting tube, with one end extending into the spiral groove; and the vertical rod is disposed at the bottom end of the filter screen.

[0010] Specifically, the demagnetizing mechanism includes a drive source, a rotating roller, a magnetic separation roller, and a diversion assembly. The drive source is located at the bottom end of the frame. The rotating roller is movably connected to the frame, and a first pulley is provided on both the shaft end of the rotating roller and the output end of the drive source. A first belt is sleeved on the outer side of the two first pulleys. The magnetic separation roller is located on the frame near the discharge plate. A conveyor belt is sleeved on the outer side of the rotating roller and the magnetic separation roller, and a contact block is provided on the conveyor belt. The diversion assembly is located at the bottom end of the frame near the discharge plate.

[0011] Specifically, the diversion assembly includes a chip removal shell and a cleaning roller. The chip removal shell is located at the bottom end of the frame below the conveyor belt. The cleaning roller is movably connected inside the chip removal shell and is in contact with the conveyor belt. The shaft end of the cleaning roller extends through the chip removal shell, and a second pulley is provided at the extended end of the cleaning roller and the shaft end of the magnetic separator roller, respectively. A second belt is sleeved on the outer side of the two second pulleys.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The graphite anode material demagnetizing equipment of the present invention drives the rotating roller to rotate through the drive source, which in turn drives the conveyor belt to rotate, thereby achieving demagnetization through the magnetic separation roller. At the same time, the contact block on the conveyor belt intermittently squeezes the auxiliary component, thereby causing the filter screen to shake through the auxiliary component, preventing the graphite anode material particles from clogging the filter screen, thus improving the overall processing efficiency and demagnetizing effect of the demagnetizing equipment. In addition, the auxiliary component will simultaneously stir the material in the magnetic separation box during the up and down shaking process, so that the material can be evenly distributed on the filter screen, reducing the residence time of the material in the magnetic separation box and accelerating the material flow rate.

[0013] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0014] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which: Figure 1 This is a schematic diagram of the overall structure of a graphite negative electrode material demagnetizing device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the main cross-sectional structure of the magnetic separator box in a graphite negative electrode material demagnetizing device according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the axial structure of a graphite negative electrode material demagnetizing device according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the overall structure of the shunt assembly of a graphite negative electrode material demagnetizing device according to an embodiment of the present invention; Figure 5 for Figure 2 Enlarged structural diagram at point A in the middle.

[0015] Reference numerals: 1. Frame; 11. Discharge plate; 2. Magnetic separator box; 3. Feeding mechanism; 31. Filter screen; 32. Support assembly; 321. Fixed rod; 322. Moving part; 323. Support rod; 33. Auxiliary assembly; 331. Crossbar; 332. Shaft tube; 3321. Spiral groove; 333. Stirring rod assembly; 334. Connecting pipe; 335. Protrusion; 336. Vertical rod; 4. Demagnetizing mechanism; 41. Drive source; 42. Rotary roller; 43. Magnetic separator roller; 44. Diverting assembly; 441. Chip discharge shell; 442. Cleaning roller; 5. Compression spring; 6. First pulley; 7. Conveyor belt; 71. Contact block; 8. Second pulley. Detailed Implementation

[0016] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0017] The following describes a graphite negative electrode material demagnetizing device according to an embodiment of the present invention with reference to the accompanying drawings.

[0018] like Figures 1-5 As shown, a graphite negative electrode material demagnetizing device according to an embodiment of the present invention may include: a frame 1, a magnetic separator box 2, a feeding mechanism 3 and a demagnetizing mechanism 4, wherein a discharge plate 11 is provided on the frame 1 and the magnetic separator box 2 is provided on the frame 1.

[0019] It should be noted that the magnetic separator 2 described in this embodiment is detachably installed on the upper part of the frame 1 and is used to hold the graphite negative electrode material.

[0020] Additionally, it should be noted that the discharge plate 11 described in this embodiment is inclined, which can guide the graphite negative electrode material after demagnetization to the subsequent collection or conveying device.

[0021] The feeding mechanism 3 includes a filter screen 31, four support components 32, and an auxiliary component 33. The filter screen 31 is movably connected to the magnetic separation box 2. The four support components 32 are equally spaced at the bottom of the filter screen 31, and the end of the support component 32 away from the filter screen 31 is connected to the bottom of the magnetic separation box 2. The auxiliary component 33 is located in the magnetic separation box 2 above the filter screen 31, and one end of the auxiliary component 33 is connected to the filter screen 31. The demagnetizing mechanism 4 is located on the frame 1 below the feeding mechanism 3.

[0022] It should be noted that the filter screen 31 described in this embodiment is mainly used to perform preliminary screening of the graphite negative electrode material entering the magnetic separator box 2, and to filter out large impurities or agglomerated particles present therein.

[0023] Additionally, it should be noted that the demagnetizing mechanism 4 described in this embodiment is positioned below the feeding mechanism 3, and is capable of receiving the filtered graphite negative electrode material, ensuring that magnetic impurities are effectively adsorbed and removed.

[0024] Specifically, during equipment operation, the graphite negative electrode material in the magnetic separator 2 falls through the mesh of the filter screen 31 and onto the demagnetizing mechanism 4 below. The demagnetizing mechanism 4 uses its own magnetic field to adsorb magnetic impurities in the falling material, thereby effectively separating the graphite negative electrode material from the magnetic material. The separated graphite negative electrode material can then be discharged via the discharge plate 11.

[0025] At the same time, the four support components 32 can provide support for the filter screen 31, and in cooperation with the auxiliary components 33, accelerate the falling speed of the material and prevent the material from accumulating and clogging at the mesh.

[0026] In one embodiment of this utility model, such as Figure 2 As shown, the support assembly 32 includes a fixed rod 321, a movable part 322, and a support rod 323. The fixed rod 321 is located at the bottom of the filter screen 31, and a compression spring 5 is sleeved on the outside of the fixed rod 321. The movable part 322 is movably connected to the fixed rod 321, and the top end of the movable part 322 is connected to the bottom end of the compression spring 5. The support rod 323 is movably connected to the fixed rod 321 through the movable part 322, and the end of the support rod 323 away from the movable part 322 is connected to the filter screen 31.

[0027] It is understood that the filter screen 31 described in this embodiment is movably assembled with the inner wall of the magnetic separator box 2, so that it can vibrate within a certain range. At the same time, the filter screen 31 is prevented from shifting laterally or shaking during the movement by the moving part 322 moving along the fixed rod 321.

[0028] Specifically, when the filter screen 31 is subjected to external force, the filter screen 31 will drive the support rod 323 to move synchronously, so that the support rod 323 pushes the moving part 322 to slide along the fixed rod 321, thereby squeezing the compression spring 5. Through the reverse elastic force generated by the deformation of the compression spring 5, the filter screen 31 is driven to vibrate in the magnetic separator box 2, thereby achieving a high-efficiency material screening effect.

[0029] In one embodiment of this utility model, such as Figure 2As shown, the auxiliary component 33 includes a crossbar 331, a shaft tube 332, a stirring rod assembly 333, a connecting pipe 334, a protrusion 335, and a vertical rod 336. The crossbar 331 is disposed inside the magnetic separator box 2. The shaft tube 332 is movably connected to the crossbar 331 and has a spiral groove 3321 inside. The stirring rod assembly 333 is disposed inside the magnetic separator box 2 and is connected to the shaft tube 332. The connecting pipe 334 is movably connected to the shaft tube 332, with its bottom end extending through the shaft tube 332 and connected to the filter screen 31. The protrusion 335 is disposed on the outer wall of the connecting pipe 334, with one end of the protrusion 335 extending into the spiral groove 3321. The vertical rod 336 is disposed at the bottom end of the filter screen 31.

[0030] It should be noted that the connecting pipe 334 described in this embodiment is slidably connected to the shaft pipe 332, and the outer diameter of the protrusion 335 on the connecting pipe 334 is adapted to the width of the spiral groove 3321 to ensure that the protrusion 335 can slide in the spiral groove 3321.

[0031] Specifically, when the filter screen 31 vibrates up and down, it will drive the connecting pipe 334 to move synchronously, so that the connecting pipe 334 drives the protrusion 335 to move up and down along the inner wall of the shaft tube 332. Then, through the cooperation of the protrusion 335 and the spiral groove 3321, the shaft tube 332 is driven to rotate, so that the stirring rod assembly 333 rotates synchronously in the magnetic separator box 2, thereby realizing the stirring and dispersion of the graphite negative electrode material in the magnetic separator box 2.

[0032] In one embodiment of this utility model, such as Figure 1 and Figure 3 As shown, the demagnetizing mechanism 4 includes a drive source 41, a rotating roller 42, a magnetic separation roller 43, and a diversion assembly 44. The drive source 41 is located at the bottom of the frame 1. The rotating roller 42 is movably connected to the frame 1. A first pulley 6 is provided on both the shaft end of the rotating roller 42 and the output end of the drive source 41. A first belt is sleeved on the outer side of the two first pulleys 6. The magnetic separation roller 43 is located on the frame 1 near the discharge plate 11. A conveyor belt 7 is sleeved on the outer side of the rotating roller 42 and the magnetic separation roller 43. A contact block 71 is provided on the conveyor belt 7. The diversion assembly 44 is located at the bottom of the frame 1 near the discharge plate 11.

[0033] It should be noted that the preferred embodiment described herein is a servo motor, which provides power for the cyclic rotation of the conveyor belt 7.

[0034] Specifically, after the drive source 41 is started, it can transmit power to the rotating roller 42 through the cooperation of the first pulley 6 and the belt, so that the rotating roller 42 and the magnetic separator 43 cooperate to realize the synchronous rotation of the conveyor belt 7 and transport the material.

[0035] Meanwhile, the magnetic separator 43 has a built-in high-magnetic permanent magnet. When the filtered graphite negative electrode material falls onto the conveyor belt 7, the magnetic impurities on the conveyor belt 7 will be adsorbed onto the surface of the conveyor belt 7 due to the influence of the magnetic separator 43. The unadsorbed graphite negative electrode material will enter the discharge plate 11 and be discharged by inertia. Then, after the conveyor belt 7 carries the magnetic impurities away from the magnetic field range of the magnetic separator 43, the conveyor belt 7 loses its adsorption force and falls, causing the magnetic impurities to fall into the diversion component 44, thus realizing the separation of magnetic impurities from qualified materials.

[0036] In one embodiment of this utility model, such as Figure 4 As shown, the diversion assembly 44 includes a chip removal shell 441 and a cleaning roller 442. The chip removal shell 441 is located at the bottom of the frame 1 below the conveyor belt 7. The cleaning roller 442 is movably connected inside the chip removal shell 441. The cleaning roller 442 is in contact with the conveyor belt 7, and the shaft end of the cleaning roller 442 extends through the chip removal shell 441. The extended end of the cleaning roller 442 and the shaft end of the magnetic separator 43 are respectively provided with second pulleys 8. A second belt is sleeved on the outer side of the two second pulleys 8.

[0037] It should be noted that the surface of the cleaning roller 442 described in this embodiment is provided with flexible cleaning bristles, and the rotation direction of the cleaning roller 442 is opposite to the movement direction of the conveyor belt 7. The magnetic impurities adsorbed on the surface of the conveyor belt 7 are efficiently cleaned by reverse friction, so as to avoid the magnetic impurities remaining on the conveyor belt 7 due to adsorption force.

[0038] Specifically, when the magnetic separator 43 rotates, it drives the cleaning roller 442 to rotate synchronously through the second pulley 8 and the second belt, thereby sweeping off the magnetic impurities adsorbed on the conveyor belt 7. The swept-off magnetic impurities fall directly into the chip discharge shell 441 below, realizing the centralized collection of magnetic impurities.

[0039] In summary, the graphite anode material demagnetizing equipment of this invention uses a drive source to rotate a rotating roller, which in turn drives a conveyor belt to rotate, thereby achieving demagnetization through a magnetic separation roller. Simultaneously, the contact blocks on the conveyor belt intermittently squeeze the auxiliary components, which in turn cause the filter screen to vibrate, preventing graphite anode material particles from clogging the filter screen pores. This improves the overall processing efficiency and demagnetizing effect of the demagnetizing equipment. Furthermore, during the up-and-down vibration, the auxiliary components simultaneously stir the material in the magnetic separation box, ensuring that the material is evenly distributed on the filter screen, reducing the residence time of the material in the magnetic separation box, and accelerating the material flow rate.

[0040] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0042] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A demagnetizing device for graphite negative electrode materials, characterized in that, include: The machine consists of a frame, a magnetic separator box, a feeding mechanism, and a demagnetizing mechanism. The frame is equipped with a discharge plate; The magnetic separator is mounted on the frame; The feeding mechanism includes a filter screen, four support components, and auxiliary components, wherein... The filter screen is movably connected inside the magnetic separator box; The four support components are equally spaced at the bottom of the filter screen, and the end of the support component away from the filter screen is connected to the bottom of the magnetic separator box. The auxiliary component is disposed inside the magnetic separator box above the filter screen, and one end of the auxiliary component is connected to the filter screen; The demagnetizing mechanism is mounted on the frame below the feeding mechanism.

2. The graphite negative electrode material demagnetizing device according to claim 1, characterized in that, The support assembly includes a fixed rod, a movable component, and a support rod, wherein, The fixing rod is disposed at the bottom end of the filter screen, and a compression spring is sleeved on the outside of the fixing rod; The movable component is movably connected to the fixed rod, and the top end of the movable component is connected to the bottom end of the compression spring; The support rod is movably connected to the fixed rod via the movable component, and the end of the support rod away from the movable component is connected to the filter screen.

3. The graphite negative electrode material demagnetizing device according to claim 1, characterized in that, The auxiliary components include a crossbar, a shaft tube, a stirring rod assembly, a connecting tube, a protrusion, and a vertical rod, wherein... The crossbar is installed inside the magnetic separator box; The shaft tube is movably connected to the crossbar, and a spiral groove is formed inside the shaft tube; The stirring rod assembly is disposed inside the magnetic separator box, and the stirring rod assembly is connected to the shaft tube; The connecting tube is movably connected inside the shaft tube, and the bottom end of the connecting tube extends through the shaft tube and is connected to the filter screen. The protrusion is disposed on the outer wall of the connecting pipe, and one end of the protrusion extends into the spiral groove; The vertical rod is located at the bottom of the filter screen.

4. The graphite negative electrode material demagnetizing device according to claim 1, characterized in that, The demagnetizing mechanism includes a drive source, a rotating roller, a magnetic separation roller, and a flow-diverting assembly, wherein... The drive source is located at the bottom of the frame; The rotating roller is movably connected to the frame. A first pulley is provided on both the shaft end of the rotating roller and the output end of the drive source, and a first belt is sleeved on the outside of the two first pulleys. The magnetic separator roller is mounted on the frame near one end of the discharge plate. A conveyor belt is sleeved on the outer side of the rotating roller and the magnetic separator roller, and a contact block is provided on the conveyor belt. The diversion component is located at the bottom end of the frame near the discharge plate.

5. The graphite negative electrode material demagnetizing device according to claim 4, characterized in that, The flow diversion assembly includes a chip discharge housing and a cleaning roller, wherein... The chip removal shell is located at the bottom end of the frame below the conveyor belt; The cleaning roller is movably connected inside the chip removal shell. The cleaning roller is in contact with the conveyor belt, and the shaft end of the cleaning roller extends through the chip removal shell. The extended end of the cleaning roller and the shaft end of the magnetic separator are respectively provided with second pulleys, and a second belt is sleeved on the outer side of the two second pulleys.

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