Lithium battery material screening device with iron removal function
By designing a lithium battery material screening device with staggered magnetic rollers to adsorb ferrous impurities, a limiting component to fix the ring frame, and a rotating disk scraper, the problem of difficult removal of ferromagnetic impurities in lithium battery materials has been solved, achieving efficient screening and improved safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 常州厚丰新能源有限公司
- Filing Date
- 2025-05-22
- Publication Date
- 2026-05-15
AI Technical Summary
Existing lithium battery materials are prone to the introduction of ferromagnetic impurities during the preparation process, which leads to increased self-discharge rate, capacity decay and thermal runaway. Existing screening equipment is difficult to effectively remove these impurities.
A lithium battery material screening device with iron removal function was designed. It uses staggered magnetic rollers 1 and 2 to adsorb iron debris, and fixes the ring frame with limiting components. Combined with rotating disk and scraper, it prevents clogging and uses spiral wire to disperse the raw materials to achieve efficient screening.
It effectively removes iron impurities, prevents clogging, improves screening efficiency, and ensures the purity and safety of lithium battery materials.
Smart Images
Figure CN224237468U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lithium battery material screening technology, and more specifically to a lithium battery material screening device with iron removal function. Background Technology
[0002] With the rapid development of new energy vehicles, energy storage systems and consumer electronics, lithium-ion batteries, as the core energy carrier, have increasingly higher requirements for performance, safety and cost. The performance of lithium batteries is highly dependent on the purity, particle uniformity and structural stability of positive and negative electrode materials. Among them, the screening and grading of raw materials and the removal of magnetic impurities are key links affecting the quality of materials in the preparation process of positive electrode materials.
[0003] A search revealed Chinese patent CN219765979U, which discloses a battery material screening and feeding device. This device drives the screen to swing back and forth, achieving the effect of self-screening. It solves the problems of traditional screening machines using centrifugal force for incomplete screening and manual screening being labor-intensive and inefficient. During the mining, crushing, transportation and processing of lithium battery materials, ferromagnetic impurities are easily mixed in. These impurities can cause micro-short circuits during battery charging and discharging, leading to increased self-discharge rate, capacity decay and even thermal runaway. Utility Model Content
[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a lithium battery material screening device with iron removal function to solve the problems existing in the background art.
[0005] This utility model provides the following technical solution: a lithium battery material screening device with iron removal function, including a shell, an avoidance groove is provided on the outer circumference of the shell, an annular frame is slidably connected in the avoidance groove, a plurality of magnetic rollers one with the same intervals are rotatably connected on the inner circumference of the annular frame, a plurality of magnetic rollers two are rotatably connected on the inner circumference of the annular frame and below the magnetic rollers one, and the plurality of magnetic rollers two are staggered with the plurality of magnetic rollers one, a screen is fixedly connected on the inner circumference of the shell, and a limiting component for limiting the annular frame is provided on the outer circumference of the shell.
[0006] As a further embodiment of this utility model, the limiting component includes a sliding groove formed on the outer circumference of the housing and connected to the clearance groove. A U-shaped plate is fixedly connected to the outer circumference of the housing and located outside the sliding groove. A locking block is slidably connected inside the U-shaped plate, and one side of the locking block is in contact with the outer circumference of the ring frame. Two symmetrical springs are fixedly connected to the lower surface of the locking block, and the other end of the springs is fixed to the bottom inner wall of the U-shaped plate.
[0007] As a further embodiment of this utility model, a circular plate is provided at the center of the screen, and a rotating disk is rotatably connected to the upper surface of the circular plate. Multiple scrapers arranged in a ring array are fixedly connected to the outer circumference of the rotating disk. Rubber strips are adhered to the underside of each of the scrapers, and the lower surfaces of the rubber strips are in contact with the screen. A drive motor for rotating the rotating disk along the axial direction is fixedly connected to the lower surface of the circular plate.
[0008] As a further embodiment of this utility model, a vertical rod is fixedly connected to the upper surface of the rotating disk, and a spiral wire is fixedly connected to the top end of the vertical rod.
[0009] As a further embodiment of this utility model, the top of the housing is provided with a feed pipe communicating with its interior, and the bottom of the housing is provided with a discharge pipe communicating with its interior.
[0010] As a further embodiment of this utility model, two square openings are provided on the outer circumferential wall of the shell, and the two square openings are respectively located on the upper and lower sides of the screen, and each of the two square openings is provided with an openable transparent viewing window.
[0011] As a further embodiment of this utility model, a protective cover is fixedly connected to the lower surface of the circular plate, and the protective cover is located outside the drive motor.
[0012] The technical effects and advantages of this utility model are as follows:
[0013] 1. This utility model uses magnetic roller one and magnetic roller two to adsorb iron debris contained inside the raw material after screening onto their surfaces, thereby removing iron. Furthermore, the magnetic roller one and magnetic roller two are staggered to further reduce the possibility of iron debris not being removed.
[0014] 2. The present invention, through the provision of a limiting component, can limit the ring frame after it is installed in the clearance groove, thereby preventing the ring frame from sliding on its own in the clearance groove during operation and thus affecting the iron removal of the raw materials.
[0015] 3. This utility model, through the provided rotating disc and scraper, can scrape the upper surface of the screen during the screening process by rotating the scraper, thereby preventing the accumulation of raw materials and causing blockage.
[0016] 4. This utility model uses spiral wires to disperse the raw materials fed from the feed pipe, dispersing them to various parts of the screen, which can further prevent the accumulation of raw materials and speed up the screening efficiency. Attached Figure Description
[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0018] Figure 2 For the present utility model Figure 1 A schematic diagram of a localized explosion structure.
[0019] Figure 3 For the present utility model Figure 1 A magnified structural diagram of part A.
[0020] Figure 4 This is a cross-sectional view of the shell structure of this utility model.
[0021] Figure 5 This is an enlarged schematic diagram of the screen structure of this utility model.
[0022] The attached diagram is labeled as follows: 1. Shell; 2. Alternating groove; 3. Ring frame; 4. Feed pipe; 5. Discharge pipe; 6. Viewing window; 7. Magnetic roller one; 8. Magnetic roller two; 9. Slide groove; 10. U-shaped plate; 11. Locking block; 12. Spring; 13. Screen; 14. Circular plate; 15. Rotating disc; 16. Vertical rod; 17. Spiral wire; 18. Drive motor; 19. Scraper; 20. Protective cover. Detailed Implementation
[0023] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. This utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0024] Reference Figures 1-5This utility model provides a lithium battery material screening device with iron removal function, including a shell 1. A clearance groove 2 is formed on the outer circumference of the shell 1. An annular frame 3 is slidably connected within the clearance groove 2. Multiple magnetic rollers 7 with equal intervals are rotatably connected to the inner circumference of the annular frame 3. Multiple magnetic rollers 8 are rotatably connected to the inner circumference of the annular frame 3 and below the magnetic rollers 7, with the magnetic rollers 8 and magnetic rollers 7 being staggered. A screen 13 is fixedly connected to the inner circumference of the shell 1 by bolts. A limiting component for limiting the movement of the annular frame 3 is provided on the outer circumference of the shell 1. A feed pipe 4 communicating with the interior of the shell 1 is provided at the top of the shell 1, and a feed pipe 4 communicating with the interior of the shell 1 is provided at the bottom of the shell 1. When lithium battery materials need to be screened, the connected discharge pipe 5 first feeds the raw material into the housing 1 through the feed pipe 4. Then the raw material is screened through the screen 13. Larger particles remain on the screen 13, while smaller particles fall below the screen 13. When the raw material reaches the ring frame 3, it passes through the magnetic roller 7 and magnetic roller 8 inside it. Iron-containing debris is adsorbed onto the surface of both rollers. Then the debris is discharged through the discharge pipe 5. The magnetic roller 7 and magnetic roller 8 can adsorb the iron-containing debris inside the raw material onto the surface of both rollers after screening, thereby removing iron. Furthermore, the magnetic roller 7 and magnetic roller 8 are staggered to further reduce the possibility of iron-containing debris not being removed.
[0025] In this utility model, the limiting component includes a sliding groove 9 formed on the outer circumference of the housing 1 and connected to the clearance groove 2. A U-shaped plate 10 is bolted to the outer circumference of the housing 1 and located outside the sliding groove 9. A locking block 11 is slidably connected inside the U-shaped plate 10, and one side of the locking block 11 contacts the outer circumference of the ring frame 3. Two symmetrical springs 12 are welded to the lower surface of the locking block 11, and the other end of the springs 12 is fixed to the bottom inner wall of the U-shaped plate 10. Two square openings are formed on the outer circumference of the housing 1, and the two square openings are respectively located on the upper and lower sides of the screen 13. Each of the two square openings is provided with an openable transparent viewing window 6. After screening, it is necessary to... When removing iron-containing debris, first press down on the locking block 11 to move it downwards along the U-shaped plate 10. At this time, the spring 12 is compressed. When the locking block 11 completely disengages from the outer circumference of the ring frame 3, pull the ring frame 3 outwards to slide it outwards along the relief groove 2. After it is completely pulled out, the iron debris on the magnetic roller 7 and magnetic roller 8 inside can be removed. When it is necessary to remove the coarse material on the screen 13, the viewing window 6 above can be opened to carry out the cleaning work. Through the provided limiting component, the ring frame 3 can be limited after being installed in the relief groove 2 to prevent the ring frame 3 from sliding in the relief groove 2 during the operation, thereby affecting the iron removal of the raw material.
[0026] To prevent clogging during screening, a circular plate 14 is positioned at the center of the screen 13. A rotating disk 15 is rotatably connected to the upper surface of the circular plate 14. Multiple scrapers 19 arranged in a ring array are bolted to the outer circumference of the rotating disk 15. Rubber strips are adhered to the underside of each scraper 19, and the lower surfaces of the rubber strips are in contact with the screen 13. A drive motor 18, which rotates the rotating disk 15 axially, is bolted to the lower surface of the circular plate 14. A protective cover 20 is bolted to the lower surface of the circular plate 14 and is located outside the drive motor 18. A vertical rod 16 is bolted to the upper surface of the rotating disk 15, and a spiral wire 17 is welded to the top of the vertical rod 16. During screening, the drive motor is activated. 18. This causes the rotating disk 15 at its end to rotate. During the rotation of the rotating disk 15, multiple scrapers 19 on its outer circumference will rotate, thereby continuously scraping the surface of the screen 13 through the rubber strip at its bottom. At the same time as the rotating disk 15 rotates, the vertical rod 16 fixed on its upper surface will rotate, thereby causing the spiral wire 17 at its top to rotate. With the provided rotating disk 15 and scrapers 19, the upper surface of the screen 13 can be scraped by the rotation of the scrapers 19 during the screening process, preventing the accumulation of raw materials and causing blockage. Furthermore, the provided spiral wire 17 can disperse the raw materials input from the feed pipe 4, dispersing them to various parts of the screen 13, which can further prevent the accumulation of raw materials and speed up the screening efficiency.
[0027] The use of this utility model involves the following steps:
[0028] S1: When it is necessary to screen lithium battery materials, the raw materials are first fed into the housing 1 through the feed pipe 4. Then the raw materials are screened through the screen 13. Larger particles stay on the screen 13, and smaller particles fall below the screen 13. When the raw materials reach the ring frame 3, they will pass through the magnetic roller 7 and magnetic roller 8 inside it. Iron-containing debris is adsorbed onto the surface of the two rollers. Then the debris is discharged through the discharge pipe 5.
[0029] S2: When iron-containing debris needs to be removed after screening, press down on the locking block 11 to move it down along the U-shaped plate 10. At this time, the spring 12 is compressed. When the locking block 11 completely disengages from the outer circumference of the ring frame 3, pull the ring frame 3 outward to slide it outward along the relief groove 2. After it is completely pulled out, the iron debris on the magnetic roller 7 and magnetic roller 8 inside can be removed. When it is necessary to remove the coarse material on the screen 13, the viewing window 6 above can be opened to carry out the cleaning work.
[0030] S3: During the screening process, the drive motor 18 is started to rotate the rotating disk 15 at its end. During the rotation of the rotating disk 15, multiple scrapers 19 on its outer circumference will rotate, thereby continuously scraping the surface of the screen 13 through the rubber strip at its bottom. At the same time as the rotating disk 15 rotates, the vertical rod 16 fixed on its upper surface will rotate, thereby rotating the spiral wire 17 at its top.
[0031] Finally, the following points should be noted: In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.
[0032] The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.
Claims
1. A lithium battery material screening device with iron removal function, comprising a housing (1), characterized in that: The outer circumferential wall of the housing (1) is provided with a clearance groove (2), and a ring frame (3) is slidably connected in the clearance groove (2). Multiple magnetic rollers (7) with the same intervals are rotatably connected on the inner circumferential wall of the ring frame (3). Multiple magnetic rollers (8) are rotatably connected on the inner circumferential wall of the ring frame (3) and below the magnetic rollers (7). The multiple magnetic rollers (8) are staggered with the multiple magnetic rollers (7). A screen (13) is fixedly connected on the inner circumferential wall of the housing (1). A limiting component for limiting the ring frame (3) is provided on the outer circumferential wall of the housing (1).
2. The lithium battery material screening device with iron removal function according to claim 1, characterized in that: The limiting component includes a sliding groove (9) formed on the outer circumference of the housing (1) and connected to the clearance groove (2). A U-shaped plate (10) is fixedly connected on the outer circumference of the housing (1) and located outside the sliding groove (9). A locking block (11) is slidably connected inside the U-shaped plate (10). One side of the locking block (11) is in contact with the outer circumference of the ring frame (3). Two symmetrical springs (12) are fixedly connected to the lower surface of the locking block (11), and the other end of the springs (12) is fixed to the bottom inner wall of the U-shaped plate (10).
3. The lithium battery material screening device with iron removal function according to claim 1, characterized in that: A circular plate (14) is provided at the center of the screen (13). A rotating disk (15) is rotatably connected to the upper surface of the circular plate (14). Multiple scrapers (19) arranged in a ring are fixedly connected to the outer circumference of the rotating disk (15). Rubber strips are glued to the bottom of each scraper (19), and the lower surfaces of the rubber strips are in contact with the screen (13). A drive motor (18) is fixedly connected to the lower surface of the circular plate (14) to make the rotating disk (15) rotate along the axial direction.
4. A lithium battery material screening device with iron removal function according to claim 3, characterized in that: A vertical rod (16) is fixedly connected to the upper surface of the rotating disk (15), and a spiral wire (17) is fixedly connected to the top end of the vertical rod (16).
5. A lithium battery material screening device with iron removal function according to claim 1, characterized in that: The top of the housing (1) is provided with a feed pipe (4) that communicates with its interior, and the bottom of the housing (1) is provided with a discharge pipe (5) that communicates with its interior.
6. A lithium battery material screening device with iron removal function according to claim 5, characterized in that: Two square openings are provided on the outer circumference of the shell (1), and the two square openings are respectively located on the upper and lower sides of the screen (13). Each of the two square openings is provided with an openable transparent viewing window (6).
7. A lithium battery material screening device with iron removal function according to claim 3, characterized in that: A protective cover (20) is fixedly connected to the lower surface of the circular plate (14), and the protective cover (20) is located outside the drive motor (18).