A multi-stage lithium battery slurry filtering and impurity removing device

Abstract

The utility model discloses a kind of lithium battery slurry multilevel filtering and impurity removing devices, including filter box, the filter box top end is connected with input pipe, the one end of input pipe is rotatably connected with connecting hose, connecting hose one end is fixedly connected with cloth pipe, cloth pipe is inclined structure, the inner wall of filter box is fixedly connected with slide rail, slide rail inside is slidably connected with sliding ring, recess is established in the top of sliding ring, recess inside is provided with gear ring, the top of gear ring is engaged with driving gear, driving gear one side is connected with driving motor, the bottom of sliding ring is connected with connecting rod, connecting rod one end is fixedly connected with cloth pipe, cloth pipe bottom is provided with first filter screen. The device can realize the uniform contact of material and first filter screen and second filter screen, thereby avoiding the phenomenon that first filter screen and second filter screen contact material repeatedly at one position, avoiding the problem that first filter screen and second filter screen are prone to blockage, guarantee the filtering efficiency of first filter screen and second filter screen.

Description

Technical Field

[0001] This utility model relates to the field of lithium-ion battery production technology, specifically to a multi-stage filtration and impurity removal device for lithium battery slurry. Background Technology

[0002] A lithium-ion battery is a rechargeable battery that primarily functions by the movement of lithium ions between the positive and negative electrodes. Lithium-ion battery slurry is one of the key raw materials for manufacturing lithium-ion battery electrodes (positive and negative electrodes). It is a high-viscosity, non-Newtonian fluid composed of a mixture of multiple components, which is uniformly coated onto metal foil (e.g., aluminum foil for the positive electrode and copper foil for the negative electrode) using a coating process. After drying, rolling, and slitting, it is formed into electrode sheets.

[0003] Incomplete mixing after lithium battery slurry production can lead to clumping, which in turn affects the quality of the electrodes during the electrode fabrication process. Therefore, filtration is necessary. However, existing filtration equipment is prone to clogging in one spot due to the fixed contact point between the material and the filter screen, reducing the filtration efficiency. Improvements are needed. Utility Model Content

[0004] The purpose of this invention is to provide a multi-level filtration and impurity removal device for lithium battery slurry, so as to solve the problem of filter screen clogging caused by the fixed contact position between the filter screen and the material mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-stage filtration and impurity removal device for lithium battery slurry, comprising a filter box, an input pipe connected to the top of the filter box, a connecting hose rotatably connected to one end of the input pipe, a cloth pipe fixedly connected to one end of the connecting hose, the cloth pipe having an inclined structure, a slide rail fixedly connected to the inner wall of the filter box, a slip ring slidably connected inside the slide rail, a groove opened on the top of the slip ring, a toothed ring provided inside the groove, a drive gear meshing with the top of the toothed ring, a drive motor being driven and connected to one side of the drive gear, a connecting rod connected to the bottom of the slip ring, one end of the connecting rod being fixedly connected to the cloth pipe, a first filter screen provided at the bottom of the cloth pipe, and a second filter screen provided at the bottom of the first filter screen.

[0006] Preferably, a drive motor is fixedly connected to the top side of the filter box, one end of the drive motor shaft is connected to a belt, and one end of the belt passes through the filter box and is connected to the shaft on one side of the drive gear.

[0007] Preferably, the drive gears are distributed in a ring at equal intervals around the top of the gear ring, and a fixing frame is connected to one side of the drive gears, with one end of the fixing frame fixedly connected to the inner wall of the filter box.

[0008] Preferably, the two ends of the connecting rod are made of metal, and the middle of the connecting rod is made of flexible material.

[0009] Preferably, both the first and second filter screens have a "V" shaped structure, the mesh size of the first filter screen is larger than that of the second filter screen, and the first and second filter screens are fixedly connected by a rod.

[0010] Preferably, the outer wall of the filter box is provided with a sleeve, the inside of the sleeve is provided with a heater, the bottom of the filter box is provided with a discharge pipe, and the discharge pipe is provided with a discharge valve.

[0011] Preferably, the input pipe is equipped with an input pump and an input valve, with the input valve located on one side of the input pump, and the connecting hose connected to the input pipe via a bearing.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] (1) This device can achieve uniform contact between the material and the first and second filter screens, thereby avoiding the phenomenon of repeated contact between the first and second filter screens and the material at one location, avoiding the problem of easy clogging of the first and second filter screens, and ensuring the filtration efficiency of the first and second filter screens.

[0014] (2) This device connects an inclined feeding pipe to the lower end of the input pipe. The feeding pipe can rotate in both directions, so that the feeding pipe feeds the material when the first filter screen and the second filter screen move. At the same time, since the first filter screen and the second filter screen are in a "V" shape, the material can flow downward on its own after being fed at the top of the first filter screen and the second filter screen, which improves the uniformity of the material contact with the first filter screen and the second filter screen, and avoids clogging of the first filter screen and the second filter screen while improving the filtration effect.

[0015] (3) This device is connected to the cloth pipe by setting a connecting rod and a connecting hose, so that the cloth pipe can be in a certain range of movement. This allows the cloth pipe to accelerate the discharge of material inside the cloth pipe during rotation by using the floating of the cloth pipe, thus avoiding blockage of the cloth pipe. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a multi-stage filtration and impurity removal device for lithium battery slurry according to the present invention;

[0017] Figure 2 This utility model relates to a multi-stage filtration and impurity removal device for lithium battery slurry. Figure 1 Enlarged view of point A in the middle;

[0018] Figure 3 This is a top view of the slide rail and slip ring connection of a multi-stage filtration and impurity removal device for lithium battery slurry according to the present invention;

[0019] Figure 4 This is a bottom view of the connection between the slide rail and the slip ring in a multi-stage filtration and impurity removal device for lithium battery slurry according to this utility model.

[0020] In the diagram: 1. Input pump; 2. Input valve; 3. Input pipe; 4. Filter box; 5. Heater; 6. Connecting hose; 7. Distribution pipe; 8. First filter screen; 9. Second filter screen; 10. Discharge pipe; 11. Discharge valve; 12. Fixing frame; 13. Drive motor; 14. Gear ring; 15. Slip ring; 16. Connecting rod; 17. Belt; 18. Drive gear; 19. Slide rail. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-4This utility model provides a technical solution: a multi-stage filtration and impurity removal device for lithium battery slurry, including a filter box 4. One end of the filter box 4 has an inspection port, and the outer ring of the inspection door is sealed with a sealing ring. The inspection door is hinged to the filter box 4. Opening the inspection door allows for the disassembly and assembly of the first filter screen 8 and the second filter screen 9 for easy maintenance and cleaning. An input pipe 3 is connected to the top of the filter box 4. An input pump 1 and an input valve 2 are installed on the input pipe 3. The input valve 2 is located on one side of the input pump 1. A connecting hose 6 is connected to the input pipe 3 via a bearing. The input pump 1 and input valve 2 of this structure are controlled by a PLC, allowing for automatic material input. A sleeve is installed on the outer wall of the filter box 4, and a heater 5 is installed inside the sleeve. The heating temperature of heater 5 is easily adjusted by PLC control. Heater 5 heats the material, ensuring its flowability and preventing blockages caused by poor flowability. A discharge pipe 10 with a discharge valve 11 is located at the bottom of filter box 4. This discharge valve 11 is controlled by PLC for automatic discharge control. A drive motor 13 is fixedly connected to the top of filter box 4. One end of the drive motor 13 shaft is connected to a belt 17, which passes through filter box 4 and connects to the shaft of drive gear 18. This belt 17 connects to the shafts of drive motor 13 and drive gear 18 via pulleys. Drive motor 13 drives drive gear 18. The components such as ring 14 and slip ring 15 rotate automatically. Multiple drive gears 18 are evenly spaced in a circular pattern around the top of the toothed ring 14. A fixed frame 12 is connected to one side of the drive gear 18, and one end of the fixed frame 12 is fixedly connected to the inner wall of the filter box 4. This structure, through multiple drive gears 18, ensures the stability of the movement of the drive toothed ring 14 and slip ring 15. One end of the input pipe 3 is rotatably connected to a connecting hose 6, and one end of the connecting hose 6 is fixedly connected to a cloth pipe 7, which has an inclined structure. A slide rail 19 is fixedly connected to the inner wall of the filter box 4, and a slip ring 15 is slidably connected inside the slide rail 19. A groove is opened on the top of the slip ring 15, and a toothed ring 14 is placed inside the groove. The top of the toothed ring 14 is meshed with the drive gear 18, and a drive gear 18 is driven to one side of the drive gear 18. The drive motor 13 is a stepper motor that can drive the gear ring 14 to rotate in both directions. This allows the material distribution tube 7 at the bottom of the slip ring 15 to evenly distribute material onto the second filter screen 9 on the first filter screen 8. A connecting rod 16 is connected to the bottom of the slip ring 15. The two ends of the connecting rod 16 are made of metal, while the middle is made of flexible material. This structure allows for an elastic connection between the material distribution tube 7 and the slip ring 15, giving the material distribution tube 7 some floating space during movement, which is beneficial for the discharge of material inside the material distribution tube 7. One end of the connecting rod 16 is fixedly connected to the material distribution tube 7. The bottom of the material distribution tube 7 is provided with the first filter screen 8. Both the first filter screen 8 and the second filter screen 9 have a "V" shaped structure. The mesh size of the first filter screen 8 is larger than that of the second filter screen 9.The first filter screen 8 and the second filter screen 9 can achieve multi-stage filtration. The first filter screen 8 and the second filter screen 9 are fixedly connected by a rod. The distribution tube 7 of this structure corresponds to the top side of the first filter screen 8 and the second filter screen 9. Utilizing the "V"-shaped structure of the first filter screen 8 and the second filter screen 9, the material can flow downwards after contacting the first filter screen 8 and the second filter screen 9, ensuring uniform contact between the first filter screen 8 and the second filter screen 9 and the material, thus improving the filtration effect. The second filter screen 9 is located at the bottom of the first filter screen 8.

[0023] Working principle: When using this multi-stage filtration and impurity removal device for lithium battery slurry, the material is first fed into the interior of the connecting hose 6 and the distribution pipe 7 from the input pipe 3, and then flows out from the end of the distribution pipe 7 to the top of the first filter screen 8 and the second filter screen 9. During the feeding process, the drive gear 18, the toothed ring 14 and the slip ring 15 rotate under the drive of the drive motor 13 and the belt 17. During the rotation, the slip ring 15 drives the distribution pipe 7 to rotate evenly on the top of the first filter screen 8 and the second filter screen 9 to distribute the material. When the material comes into contact with the first filter screen 8 and the second filter screen 9, it flows from top to bottom. The material that passes through the first filter screen 8 and the second filter screen 9 is finally discharged from the discharge pipe 10.

[0024] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-stage filtration and impurity removal device for lithium battery slurry, comprising a filter box (4), characterized in that: The filter box (4) is connected to an input pipe (3) at the top. One end of the input pipe (3) is rotatably connected to a connecting hose (6). One end of the connecting hose (6) is fixedly connected to a cloth pipe (7). The cloth pipe (7) has an inclined structure. The inner wall of the filter box (4) is fixedly connected to a slide rail (19). A slip ring (15) is slidably connected inside the slide rail (19). The top of the slip ring (15) has a groove. A toothed ring (14) is set inside the groove. A drive gear (18) is meshed with the top of the toothed ring (14). A drive motor (13) is driven to one side of the drive gear (18). A connecting rod (16) is connected to the bottom of the slip ring (15). One end of the connecting rod (16) is fixedly connected to the cloth pipe (7). A first filter screen (8) is set at the bottom of the cloth pipe (7). A second filter screen (9) is set at the bottom of the first filter screen (8).

2. The multi-stage filtration and impurity removal device for lithium battery slurry according to claim 1, characterized in that: A drive motor (13) is fixedly connected to the top side of the filter box (4). One end of the shaft of the drive motor (13) is connected to a belt (17). One end of the belt (17) passes through the filter box (4) and is connected to the shaft on one side of the drive gear (18).

3. The multi-stage filtration and impurity removal device for lithium battery slurry according to claim 1, characterized in that: The drive gear (18) has multiple gears distributed at equal intervals in a circular pattern about the top of the gear ring (14). A fixing frame (12) is connected to one side of the drive gear (18), and one end of the fixing frame (12) is fixedly connected to the inner wall of the filter box (4).

4. The multi-stage filtration and impurity removal device for lithium battery slurry according to claim 1, characterized in that: The two ends of the connecting rod (16) are made of metal, and the middle of the connecting rod (16) is made of flexible material.

5. The multi-stage filtration and impurity removal device for lithium battery slurry according to claim 1, characterized in that: Both the first filter screen (8) and the second filter screen (9) are "V" shaped structures. The mesh size of the first filter screen (8) is larger than that of the second filter screen (9). The first filter screen (8) and the second filter screen (9) are fixedly connected by a rod.

6. The multi-stage filtration and impurity removal device for lithium battery slurry according to claim 1, characterized in that: The filter box (4) is provided with a sleeve on its outer wall, and a heater (5) is provided inside the sleeve. The filter box (4) is provided with a discharge pipe (10) at its bottom, and a discharge valve (11) is provided on the discharge pipe (10).

7. The multi-stage filtration and impurity removal device for lithium battery slurry according to claim 1, characterized in that: An input pump (1) and an input valve (2) are provided on the input pipe (3). The input valve (2) is located on one side of the input pump (1). The connecting hose (6) is connected to the input pipe (3) through a bearing.

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