Graphite cathode material powder winnowing device

Abstract

The utility model belongs to the technical field of battery production, and relates to a graphite cathode material powder winnowing device which comprises a winnowing cylinder, a discharge port is arranged at one end of the winnowing cylinder, an exhaust fan is arranged on the inner side of the other end of the winnowing cylinder, a feeding cylinder is fixed at the top end of the winnowing cylinder, a material sinking box is fixed at the lower end of the winnowing cylinder, and the material sinking box is communicated with the winnowing cylinder. A material collecting assembly is arranged at the lower end of the material sinking box. Through the structural design of the rotating shaft and the material guide plates, when the exhaust fan is started for winnowing, the rotating shaft can be driven to rotate through the material guide plates, and when the rotating shaft and the material guide plates rotate, materials located in the feeding barrel are orderly input into the winnowing barrel through a gap between every two adjacent material guide plates for winnowing, so that the winnowing efficiency is improved, and the winnowing efficiency is improved. And then, the winnowed materials are collected through the material collecting assembly, so that the situation that the winnowing effect is affected due to difficult discharging caused by the fact that wind power enters the feeding barrel is effectively reduced, and the practicability of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to battery production technical field relates to a graphite negative material powder air separation device. BACKGROUND

[0002] Lithium ion secondary battery currently mainly uses graphite micro powder as the negative material of its conductive negative electrode, and its particle size is usually between 3um and 30um. In actual application, in order to meet different process requirements, it is necessary to classify the particle size of graphite according to different particle sizes. At present, the air separation device is usually used to screen the graphite negative material powder. In the screening process, the powder is placed into the air separation cylinder from the feeding cylinder for separation.

[0003] For example, patent (CN217830780U) discloses a graphite negative material powder air separation device, which is characterized by "including air separation cylinder, the upper part of the air separation cylinder is provided with feeding cylinder, the intermittent feeding structure is installed at the feeding cylinder, the air inlet end and the air outlet end of the air separation cylinder are respectively connected with the fan and the air buffer cylinder, the bottom of the air separation cylinder is provided with discharge chute, the bottom of the discharge chute is provided with discharge cylinder, the sealing structure is installed at the discharge cylinder, the fixed ring is fixedly installed outside the discharge cylinder, the sealing structure includes a plurality of clamping arc plates, the clamping arc plates are elastically connected with the fixed ring through springs; the collection bag is fixed at the discharge cylinder through the clamping arc plate, and the air separation powder is collected through the collection bag, so that the problem that part of the powder may leak out of the gap between the discharge port of the separation cylinder and the collection groove during collection, affecting the collection quality, is avoided.

[0004] When using the above technology, it is found that the existing technology has the following technical problems: the above device is through a fixed sieve plate and a reciprocating sieve plate to send the material into the air separation cylinder when discharging the material, but the air in the air separation cylinder is easy to blow to the feeding cylinder through the sieve plate during air separation, so that the material cannot be quantitatively and effectively conveyed to the air separation cylinder through the sieve plate, affecting the air separation effect. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model is that the above device is through a fixed sieve plate and a reciprocating sieve plate to send the material into the air separation cylinder when discharging the material, but the air in the air separation cylinder is easy to blow to the feeding cylinder through the sieve plate during air separation, so that the material cannot be quantitatively and effectively conveyed to the air separation cylinder through the sieve plate, affecting the air separation effect.

[0006] The utility model discloses a graphite negative material powder air separation device, including air separation cylinder, the one end of air separation cylinder is provided with the discharge port, the inboard of the other end of air separation cylinder is provided with the exhaust fan, the top of air separation cylinder is fixed with the feeding cylinder, the lower extreme of air separation cylinder is fixed with the sinking material box, the sinking material box is linked together with air separation cylinder, the lower extreme of sinking material box is provided with the material collecting subassembly, the inboard of the one end of feeding cylinder close to air separation cylinder is provided with the material conveying subassembly, the material conveying subassembly includes rotating shaft, the inboard of the one end of feeding cylinder close to air separation cylinder is horizontally provided with rotating shaft, the inboard of feeding cylinder is uniformly fixed with a plurality of guide plates for rotating shaft.

[0007] The both ends of rotating shaft extend to the inside of feeding cylinder, the both sides of rotating shaft are uniformly provided with a plurality of insertion holes, the inboard of feeding cylinder and the position corresponding with insertion hole are provided with insertion ball, insertion ball is connected with feeding cylinder slidingly, insertion ball is connected with rotating shaft through insertion hole, the side of insertion ball away from rotating shaft is fixed with insertion spring, the one end of insertion spring away from insertion ball is fixedly connected with feeding cylinder.

[0008] The material collecting subassembly includes connecting block, the connecting block is fixed at the lower extreme position of sinking material box, the lower extreme of sinking material box and the position corresponding with collecting bag are provided with the discharge port, the inboard of connecting block is connected with connecting seat slidingly, the lower extreme of connecting seat is detachably connected with collecting bag, the end part side of connecting seat close to connecting block is provided with limiting slot, the position of connecting block corresponding with limiting slot is provided with limiting assembly.

[0009] The limiting assembly includes moving rod, the moving rod is horizontally arranged at the inboard of connecting block and the position corresponding with limiting slot, the moving rod is connected with connecting block slidingly, the one end of moving rod close to connecting seat is fixed with limiting block, the limiting block is connected with connecting block slidingly, the limiting block is connected with connecting seat through limiting slot, the other end of moving rod extends to the outside of connecting block, the one end of moving rod located at the outside of connecting block is fixed with lifting handle, the inboard of the one end of moving rod close to limiting block is provided with limiting spring, one end of limiting spring is fixedly connected with limiting block, the other end of limiting spring is fixedly connected with connecting block.

[0010] The both sides of connecting seat are fixed with connecting sliding block, and the connecting seat is connected with the connecting block slidingly through the connecting sliding block.

[0011] The inboard of discharge port and the position close to sinking material box are fixed with inclined plate.

[0012] Compared with the prior art, the beneficial effects of the utility model are: through the structural design of the rotating shaft and the guide plate, when starting the air exhaust fan for winnowing, the rotating shaft can be driven to rotate by the guide plate, when the rotating shaft and the guide plate rotate, the material in the inside of the feeding cylinder is orderly input to the inside of the winnowing cylinder through the gap between the adjacent two guide plates for winnowing, then the material after winnowing is collected through the material collecting assembly, thereby effectively reducing the case that the air force into the inside of the feeding cylinder leads to difficult discharging and affects the winnowing effect, improving the practicality of the device.

[0013] Through the structural design of the material collecting assembly, after the material after winnowing enters the inside of the collecting bag through the discharging opening, the material after winnowing can be collected, and the collecting bag can be conveniently and quickly taken out from the inside of the connecting block, thereby effectively improving the working efficiency of material collecting. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the overall structural schematic view of the utility model.

[0015] Figure 2 It is the structural schematic view of the material conveying assembly in the utility model.

[0016] Figure 3 It is the structural schematic view of the connecting sliding block in the utility model. Figure 2 The enlarged view of A in the figure.

[0017] Figure 4 It is the structural schematic view of the connecting sliding block in the utility model.

[0018] Figure 5 It is the structural schematic view of the limiting assembly in the utility model.

[0019] In the figure: 1, winnowing cylinder; 2, feeding cylinder; 3, discharging port; 4, material sinking box; 5, connecting block; 6, collecting bag; 7, air exhaust fan; 8, rotating shaft; 9, guide plate; 10, inclined plate; 11, plug-in hole; 12, plug-in ball; 13, plug-in spring; 14, discharging opening; 15, connecting seat; 16, connecting sliding block; 17, limiting slot; 18, moving rod; 19, limiting block; 20, limiting spring; 21, pull handle. DETAILED DESCRIPTION

[0020] Embodiment 1

[0021] As Figures 1-5As shown, including the winnowing cylinder 1, one end of the winnowing cylinder 1 is provided with a discharge port 3, the other end of the winnowing cylinder 1 is provided with a exhaust fan 7, the top end of the winnowing cylinder 1 is fixed with a feeding cylinder 2, the lower end of the winnowing cylinder 1 is fixed with a sink tank 4, the sink tank 4 is communicated with the winnowing cylinder 1, in order to facilitate the collection of the material after the winnowing, the lower end of the sink tank 4 is provided with a material collecting assembly, in order to facilitate the material in the feeding cylinder 2 to be transported to the inside of the winnowing cylinder 1, the inside of the one end of the feeding cylinder 2 close to the winnowing cylinder 1 is provided with a material conveying assembly, the material conveying assembly includes a rotating shaft 8, the rotating shaft 8 is transversely arranged in the inside of the one end of the feeding cylinder 2 close to the winnowing cylinder 1, the rotating shaft 8 is uniformly fixed with a plurality of guide plates 9 on the outside of the inside of the feeding cylinder 2.

[0022] Through the structural design of the rotating shaft 8 and the guide plate 9, when the exhaust fan 7 is started to winnow, the rotating shaft 8 can be driven to rotate by the guide plate 9, when the rotating shaft 8 and the guide plate 9 rotate, the material in the feeding cylinder 2 is orderly input to the inside of the winnowing cylinder 1 through the gap between the adjacent two guide plates 9 for winnowing, and then the material after winnowing is collected by the material collecting assembly, thereby effectively reducing the situation that the air enters the inside of the feeding cylinder 2 to cause difficult discharging and affect the winnowing effect, improving the practicability of the device.

[0023] The both ends of the rotating shaft 8 extend to the inside of the feeding cylinder 2, a plurality of plug-in holes 11 are uniformly arranged on the outside of the both ends of the rotating shaft 8, in order to facilitate the speed reduction of the rotating shaft 8 through the plug-in hole 11, the plug-in ball 12 is arranged on the inside of the feeding cylinder 2 and corresponds to the plug-in hole 11, the plug-in ball 12 is slidingly connected with the feeding cylinder 2, the plug-in ball 12 is plug-in connected with the rotating shaft 8 through the plug-in hole 11, in order to facilitate the limiting of the plug-in ball 12, the plug-in spring 13 is fixed on the side of the plug-in ball 12 away from the rotating shaft 8, one end of the plug-in spring 13 away from the plug-in ball 12 is fixedly connected with the feeding cylinder 2.

[0024] When working, firstly, the material is injected into the inside of the feeding cylinder 2, then the exhaust fan 7 is started to send the wind force to the direction close to the material sinking box 4, when the wind force contacts the guide plate 9, the guide plate 9 is driven to rotate along the axial direction of the rotating shaft 8, the guide plate 9 drives the rotating shaft 8 to rotate at the same time when rotating, so as to deliver the material between the adjacent two guide plates 9 in the inside of the feeding cylinder 2 to the inside of the winnowing cylinder 1, then the material is winnowed by the wind force, when the rotating shaft 8 rotates, the plug-in ball 12 is extruded, so that the plug-in ball 12 moves to the direction close to the plug-in spring 13, when the rotating shaft 8 rotates to the position where the other plug-in hole 11 corresponds to the plug-in ball 12, the plug-in ball 12 moves to the inside of the rotating shaft 8 under the elastic action of the plug-in spring 13, through the design of the plurality of plug-in balls 12, the rotating shaft 8 can be simply limited and plugged when rotating, so as to achieve the effect of reducing the rotating speed of the rotating shaft 8, and reduce the situation that the material is delivered to the winnowing cylinder 1 at a high speed due to the too fast rotation of the rotating shaft 8, and the winnowing effect is poor.

[0025] Embodiment 2

[0026] As shown in Figure 4 and Figure 5 , the material collecting assembly comprises a connecting block 5 fixed at the lower end position of the material sinking box 4, in order to facilitate the discharge of the material in the inside of the material sinking box 4, the lower end of the material sinking box 4 and the position corresponding to the collecting bag 6 are provided with a discharge port 14, in order to facilitate the collection of the material in the inside of the material sinking box 4, the inner side of the connecting block 5 is slidably connected with a connecting seat 15, the lower end of the connecting seat 15 is detachably connected with the collecting bag 6, the end part side close to the connecting block 5 of the connecting seat 15 is provided with a limiting groove 17, in order to facilitate the limiting of the connecting seat 15 through the limiting groove 17, the connecting block 5 is provided with a limiting assembly at the position corresponding to the limiting groove 17; in order to facilitate the connection of the connecting seat 15 and the connecting block 5, the two side top ends of the connecting seat 15 are fixed with connecting sliding blocks 16, the connecting seat 15 is slidably connected with the connecting block 5 through the connecting sliding blocks 16.

[0027] The limiting component includes a moving rod 18, which is laterally positioned inside the connecting block 5 and corresponding to the limiting groove 17. The moving rod 18 is slidably connected to the connecting block 5. To limit the connecting seat 15, a limiting block 19 is fixed to one end of the moving rod 18 near the connecting seat 15. The limiting block 19 is slidably connected to the connecting block 5 and is inserted into the connecting seat 15 through the limiting groove 17. The other end of the moving rod 18 extends to the outside of the connecting block 5. To facilitate the movement of the moving rod 18, a lifting handle 21 is fixed to one end of the moving rod 18 located outside the connecting block 5. To facilitate the limiting of the limiting block 19 and prevent the limiting block 19 from sliding without human intervention, a limiting spring 20 is sleeved on the outside of one end of the moving rod 18 near the limiting block 19. One end of the limiting spring 20 is fixedly connected to the limiting block 19, and the other end of the limiting spring 20 is fixedly connected to the connecting block 5.

[0028] When materials need to be removed, first pull the lifting handle 21 away from the connecting seat 15. This causes the lifting handle 21 to move the limiting block 19 via the moving rod 18. When the limiting block 19 moves to the point of disengagement from the limiting groove 17, the limiting block 19 releases its restriction on the connecting seat 15. Then, the connecting seat 15 can be moved out from the inside of the connecting block 5. When another collection bag 6 needs to be installed, the connecting seat 15 can be moved to the inside of the connecting block 5 via the connecting slider 16. When the connecting seat 15 moves to contact the limiting block 19, the connecting seat 15 presses against the limiting block 19, causing the limiting block 19 to move closer to the limiting spring 20. When the connecting seat 15 moves to the position corresponding to the limiting groove 17 and the limiting block 19, the limiting spring 20 pushes the limiting block 19 into the inside of the limiting groove 17, thus completing the restriction on the connecting seat 15 and completing the installation.

[0029] Example 3

[0030] like Figure 2 As shown, an inclined plate 10 is fixed inside the discharge port 3 and near the settling box 4. Through the structural design of the inclined plate 10, when the material is air-separated, larger particles will fall into the settling box 4 under the obstruction of the inclined plate 10, while lighter particles can be discharged directly from the surface of the inclined plate 10 towards the settling box 4, effectively improving the air separation effect.

[0031] The descriptions of the orientation and relative positional relationships of the structure in this utility model, such as descriptions of front, back, left, right, up, and down, do not constitute a limitation on this utility model, but are merely for the convenience of description.

Claims

1. A graphite negative electrode material powder air separation device, characterized by: The device includes an air separator (1), one end of which has a discharge port (3), and the other end of which has an exhaust fan (7). The top of the air separator (1) is fixed with a feed cylinder (2), and the bottom of the air separator (1) is fixed with a settling box (4). The settling box (4) is connected to the air separator (1). The bottom of the settling box (4) is provided with a material collection assembly. The feed cylinder (2) is provided with a material conveying assembly on the inner side of the end near the air separator (1). The material conveying assembly includes a rotating shaft (8). The rotating shaft (8) is horizontally arranged on the inner side of the end of the feed cylinder (2) near the air separator (1). Multiple guide plates (9) are evenly fixed on the outer side of the inner side of the feed cylinder (2).

2. The graphite negative electrode material powder air separation device according to claim 1, characterized in that: Both ends of the rotating shaft (8) extend into the interior of the feed cylinder (2). Multiple insertion holes (11) are evenly provided on the outer sides of both ends of the rotating shaft (8). An insertion ball (12) is provided on the inner side of the feed cylinder (2) at a position corresponding to the insertion hole (11). The insertion ball (12) is slidably connected to the feed cylinder (2). The insertion ball (12) is inserted into the rotating shaft (8) through the insertion hole (11). An insertion spring (13) is fixed on the side of the insertion ball (12) away from the rotating shaft (8). The end of the insertion spring (13) away from the insertion ball (12) is fixedly connected to the feed cylinder (2).

3. The graphite negative electrode material powder air separation device according to claim 2, characterized in that: The material collection assembly includes a connecting block (5), which is fixed at the lower end of the settling box (4). A discharge port (14) is provided at the lower end of the settling box (4) and at the position corresponding to the collection bag (6). A connecting seat (15) is slidably connected to the inner side of the connecting block (5). The collection bag (6) is detachably connected to the lower end of the connecting seat (15). A limiting groove (17) is provided on the side of the connecting seat (15) near the end of the connecting block (5). A limiting component is provided at the position corresponding to the limiting groove (17) of the connecting block (5).

4. The graphite negative electrode material powder air separation device according to claim 3, characterized in that: The limiting component includes a moving rod (18), which is laterally arranged inside the connecting block (5) and at a position corresponding to the limiting groove (17). The moving rod (18) is slidably connected to the connecting block (5). A limiting block (19) is fixed at one end of the moving rod (18) near the connecting seat (15). The limiting block (19) is slidably connected to the connecting block (5). The limiting block (19) is inserted into the connecting seat (15) through the limiting groove (17). The other end of the moving rod (18) extends to the outside of the connecting block (5). A lifting handle (21) is fixed at one end of the moving rod (18) located outside the connecting block (5). A limiting spring (20) is sleeved on the outside of one end of the moving rod (18) near the limiting block (19). One end of the limiting spring (20) is fixedly connected to the limiting block (19), and the other end of the limiting spring (20) is fixedly connected to the connecting block (5).

5. The graphite negative electrode material powder air separation device according to claim 3, characterized in that: Two sides of the connecting seat (15) are fixed with connecting sliding blocks (16), and the connecting seat (15) is slidably connected with the connecting block (5) through the connecting sliding blocks (16).

6. The graphite negative electrode material powder air separation device according to claim 1, characterized in that: The inner side of the discharge port (3) is fixed with an inclined plate (10) near the position close to the sink tank (4).

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