Waste lithium battery black powder screening and separating device

Abstract

The invention provides a waste lithium battery black powder screening and separating device, and relates to the technical field of waste lithium battery recycling treatment. A screening assembly, a turning assembly and an absorbing assembly are arranged in the screening device shell. Continuous vibration screening is achieved through the double-layer screening structure of the first screening frame and the second screening frame in the screening assembly in cooperation with elastic contact of the driving block and the protrusions, meanwhile, blockage of the screening holes can be automatically cleaned through the cleaning rod, and the screening efficiency is remarkably improved; the turning assembly turns black powder through reciprocating movement of a turning rake, and screening uniformity is ensured; the absorbing assembly absorbs the drifting black powder through a diffusion type air suction structure and filters and collects the drifting black powder, so that the health of workers is guaranteed, and resource recycling is achieved. The device solves the problems that traditional screening equipment is low in screening efficiency, screening holes are prone to being blocked, black powder drifts away to cause pollution and screening is uneven, and is suitable for efficient separation and recycling treatment of waste lithium battery black powder.

Description

Technical Field

[0001] This invention relates to the field of waste lithium battery recycling and processing technology, and in particular to a waste lithium battery black powder screening and separation device. Background Technology

[0002] In the recycling of waste lithium batteries, the screening and separation of black powder (a mixed powder containing valuable metals such as lithium, cobalt, and nickel) is a key step, directly affecting the purity and efficiency of subsequent metal extraction.

[0003] For example, application number CN202322965063.8 provides a battery black powder separation device. The battery black powder separation device includes a feeding hopper, a cyclone separator, an ultrasonic vibrating screen, a battery black powder separation chamber, a bag filter, and an induced draft fan. The feeding hopper is connected to the cyclone separator, which is connected to both the ultrasonic vibrating screen and the bag filter. The ultrasonic vibrating screen is connected to the battery black powder separation chamber, which is connected to the bag filter, and the bag filter is connected to the induced draft fan. In this embodiment, due to the difference in particle diameter and density between copper-aluminum powder and battery black powder, the mixture formed by the copper-aluminum powder and battery black powder is sequentially passed through the cyclone separator, the ultrasonic vibrating screen, and the battery black powder separation chamber for three-stage screening and collection, thereby achieving the separation of ultrafine powder. This not only improves the recovery rate of battery black powder but also reduces the cost of closed-loop recycling of waste lithium batteries, meeting the needs of the healthy development of lithium battery recycling.

[0004] The anti-fan screening device similar to the one mentioned above has the following problems: During the screening process, the sieve holes are easily clogged by black powder particles, requiring frequent manual cleaning, resulting in low screening efficiency; Using only a single-layer screening structure makes it difficult to achieve graded separation of black powder, resulting in insufficient screening accuracy; During the screening process, the black powder is easily dispersed into the air, which not only wastes resources but can also be inhaled by staff, harming their health. During the screening process, black powder tends to accumulate in certain areas of the screening box, resulting in uneven screening and affecting the separation effect. Summary of the Invention

[0005] This invention relates to a waste lithium battery black powder screening and separation device, which solves the problems of easy clogging of screen holes, low screening efficiency, insufficient precision, black powder scattering and pollution, and uneven screening in traditional screening equipment.

[0006] This invention provides a waste lithium battery black powder screening and separation device, specifically comprising: a screening device housing; second base blocks symmetrically welded to the inner side of the screening device housing, each second base block symmetrically welded with guide rods, a first screening frame sliding on the guide rods, and a spring sleeved on each guide rod for the first screening frame to return to its upward position; a frame fixed on the second base blocks, with cleaning rods equidistantly welded to the frame, the cleaning rods being located below the first screening frame, the cleaning rods being aligned with the sieve holes on the first screening frame, and the cleaning rods passing through the first screening frame when the first screening frame moves downward; a door panel is hinged to the front end face of the screening device housing via a hinge.

[0007] Furthermore, a first motor is fixed to the right end face of the screening device housing, and a drive block is fixed to the output shaft of the first motor. When the first motor rotates, the drive block elastically contacts the first screening frame, driving the first motor to rotate.

[0008] Furthermore, the first screening frame is welded with protrusions at equal intervals. The protrusions are semi-cylindrical structures and are aligned with the driving block. When the driving block rotates, it is in continuous elastic contact with the protrusions.

[0009] Furthermore, a connecting rod is symmetrically welded to the bottom end of the first screening frame, and a second screening frame is welded to the lower end of the connecting rod. The sieve holes on the second screening frame are smaller than those on the first screening frame.

[0010] Furthermore, the second base block, guide rod, first screening frame, spring, protrusion, frame, cleaning rod, connecting rod, second screening frame, first motor and drive block together form a screening assembly; symmetrical sliding seats are fixed inside the screening device housing, connecting blocks slide on the sliding seats, and turning rakes slide on the connecting blocks, with the turning rakes contacting the bottom surface of the inner wall of the first screening frame.

[0011] Furthermore, a second motor is fixed to the housing of the screening device, and a threaded rod is fixed to the output shaft of the second motor, the threaded rod being threadedly connected to the connecting block.

[0012] Furthermore, the sliding seat, connecting block, turning rake, second motor and threaded rod together form the turning assembly; a fan and filter box are fixed on the right side of the screening device housing, the exhaust pipe of the fan is connected to the filter box, the air inlet pipe of the fan is connected to the suction pipe, and the suction pipe is fixed to the top of the screening device housing.

[0013] Furthermore, the suction pipe is a cylindrical tubular structure, and suction holes are equidistantly opened on the outer wall of the suction pipe. The suction holes are a diffusion-type suction structure of the suction pipe. The fan, filter box, suction pipe and suction holes together form the absorption assembly.

[0014] Furthermore, the left and right end faces of the screening device housing are each welded with a first base block, and each first base block is symmetrically threaded with a threaded support rod. Each threaded support rod has a support block rotating at one end below it, and the support block is in contact with the ground.

[0015] This invention provides a waste lithium battery black powder screening and separation device, which has the following beneficial effects: The screening component of this application adopts a double-layer screening structure. The screen aperture sizes of the first screening frame and the second screening frame are different, which can realize the graded separation of black powder and achieve higher screening accuracy. At the same time, the first motor drives the drive block to rotate, which makes continuous elastic contact with the semi-cylindrical protrusion on the first screening frame. With the help of the spring on the guide rod, the first screening frame is vibrated at high frequency, which greatly improves the screening efficiency. When the first screening frame moves downward, the cleaning rod on the frame can pass through the screen aperture to automatically clean the clogging particles without manual intervention, further ensuring the continuity of screening.

[0016] The flipping assembly of this application drives the threaded rod to rotate via a second motor, causing the connecting block and the flipping rake to move back and forth along the sliding seat. The flipping rake contacts the bottom surface of the inner wall of the first screening frame, which can evenly spread the accumulated black powder, avoid the problem of insufficient screening caused by local accumulation, and ensure that all black powder particles can be separated through the sieve holes, thereby improving the separation effect.

[0017] The absorption component of this application generates negative pressure through a fan, and the diffused air intake holes on the air intake pipe can absorb the black powder that is scattered during the screening process from all directions. The black powder is then transported to the filter box for filtration and collection through the air intake pipe. On the one hand, this avoids black powder from polluting the air and protects the health of the staff. On the other hand, the recovered black powder can be reused, reducing resource waste and lowering recycling costs.

[0018] The screening device of this application has threaded support rods threadedly connected to the first base blocks on both sides of the housing. The height of the device can be adjusted by rotating the threaded support rods. With the stable contact between the support blocks and the ground, the device can be placed horizontally even on uneven ground, which improves the stability of the screening process and avoids the impact of device shaking on the screening accuracy. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0020] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0021] In the attached diagram: Figure 1 A perspective view of the waste lithium battery black powder screening and separation device of the present invention is shown; Figure 2 The front view of the waste lithium battery black powder screening and separation device of the present invention is shown; Figure 3 This is a three-dimensional view of the waste lithium battery black powder screening and separation device of the present invention after being cut open; Figure 4 This shows a front view of the waste lithium battery black powder screening and separation device of the present invention after being cut open; Figure 5 A perspective view of the flipping component of the present invention is shown; Figure 6 A perspective view of the absorption component of the present invention is shown; Figure 7 A perspective view of the screening component of the present invention is shown; Figure 8 A perspective view of the frame and cleaning rod of the present invention is shown.

[0022] List of reference numerals 1. Screening device housing; 101. First base block; 102. Threaded support rod; 103. Support block; 104. Door panel; 2. Screening assembly; 201. Second base block; 202. Guide rod; 203. First screening frame; 204. Spring; 205. Protrusion; 206. Frame; 207. Cleaning rod; 208. Connecting rod; 209. Second screening frame; 210. First motor; 211. Drive block; 3. Tilting assembly; 301. Sliding seat; 302. Connecting block; 303. Tilting rake; 304. Second motor; 305. Threaded rod; 4. Absorption assembly; 401. Fan; 402. Filter box; 403. Suction pipe; 404. Suction hole. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Unless otherwise defined, all terms (including technical and scientific terms) used in embodiments of this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in a common dictionary should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and not as being interpreted in an idealized or highly formalized sense, unless expressly defined in this embodiment of the invention.

[0025] The terms "first," "second," and similar words used in the embodiments of this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "an," "a," or "the" do not indicate a quantity limitation, but rather indicate the presence of at least one. Likewise, the terms "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. In the following description, spatial and directional terms such as "upper," "lower," "front," "rear," "top," "bottom," "vertical," and "horizontal" may be used to describe embodiments of the invention; however, it should be understood that these terms are only for the convenience of describing the embodiments shown in the figures and do not require the actual device to be constructed or operated in a specific orientation. In the following description, the use of terms such as "connect," "link," "fix," and "attach" can refer to a direct connection between two elements or structures without other elements or structures, or to an indirect connection between two elements or structures through an intermediate element or structure, unless otherwise expressly stated herein.

[0026] Example 1: Please refer to Figures 1 to 8 : This invention proposes a waste lithium battery black powder screening and separation device, comprising: a screening device housing 1; second base blocks 201 are symmetrically welded to the inner side of the screening device housing 1, and guide rods 202 are symmetrically welded to each second base block 201. A first screening frame 203 slides on the guide rods 202, and a spring 204 for the first screening frame 203 to return to its upward position is sleeved on each guide rod 202; a frame 206 is fixed on the second base block 201, and cleaning rods 207 are equidistantly welded to the frame 206. The cleaning rods 207 are located below the first screening frame 203, and the cleaning rods 207 are aligned with the screen holes on the first screening frame 203. When the first screening frame 203 moves downward, the cleaning rods 207 pass through the first screening frame 203. During the screening process, the cleaning rods 207 can automatically clear the screen holes on the first screening frame 203, thereby improving the screening efficiency.

[0027] The screening device housing 1 has a first motor 210 fixed on its right end face. A drive block 211 is fixed on the output shaft of the first motor 210. When the first motor 210 rotates, the drive block 211 makes elastic contact with the first screening frame 203, driving the first motor 210 to rotate. Under the pressure of the drive block 211, the first screening frame 203 can reciprocate to collide with the guide rod 202 of the stepped shaft structure, thereby realizing the screening action.

[0028] The first screening frame 203 has protrusions 205 welded at equal intervals. The protrusions 205 are semi-cylindrical structures and are aligned with the drive block 211. When the drive block 211 rotates, it is in continuous elastic contact with the protrusions 205. The cooperation between the drive block 211 and the protrusions 205 enables the first screening frame 203 to vibrate continuously, thereby further improving the screening efficiency.

[0029] The first screening frame 203 has a connecting rod 208 symmetrically welded to its bottom end, and a second screening frame 209 is welded to the lower end of the connecting rod 208. The sieve holes on the second screening frame 209 are smaller than those on the first screening frame 203, and the second screening frame 209 can perform synchronous screening with the first screening frame 203.

[0030] The screening assembly 2 is composed of the second base block 201, guide rod 202, first screening frame 203, spring 204, protrusion 205, frame 206, cleaning rod 207, connecting rod 208, second screening frame 209, first motor 210, and drive block 211. A sliding seat 301 is symmetrically fixed inside the screening device housing 1. A connecting block 302 slides on the sliding seat 301, and a turning rake 303 slides on the connecting block 302. The turning rake 303 contacts the bottom surface of the inner wall of the first screening frame 203. Because the turning rake 303 slides on the connecting block 302, during the up-and-down reciprocating vibration of the first screening frame 203, the turning rake 303, under its own weight, can follow the first screening frame 203 in moving up and down, ensuring the turning effect of the turning rake 303 on the black powder inside the first screening frame 203.

[0031] The screening device housing 1 is equipped with a second motor 304, and a threaded rod 305 is fixed on the output shaft of the second motor 304. The threaded rod 305 is threadedly connected to the connecting block 302. When the black powder in the first screening frame 203 is turned over, the second motor 304 is driven to rotate. Under the threaded drive of the threaded rod 305, the connecting block 302 and the turning rake 303 can be moved. The movement of the turning rake 303 can turn over the black powder. By turning over the black powder, the screening effect of the black powder can be improved.

[0032] The sliding seat 301, connecting block 302, turning rake 303, second motor 304, and threaded rod 305 together form the turning assembly 3. A fan 401 and a filter box 402 are fixed to the right side of the screening device housing 1. The exhaust pipe of the fan 401 is connected to the filter box 402, which has an exhaust pipe for discharging filtered gas. The discharged gas is gas that has passed through the filter box 402 and is free of black powder, thus purifying the air. The air inlet pipe of the fan 401 is connected to the suction pipe 403, which is fixed to the screening device. Located at the top of the housing 1, there are two suction pipes 403, which are symmetrically arranged. The arrangement of the two suction pipes 403 can improve the absorption effect of black powder in the air. When in use, the fan 401 is turned on. At this time, the suction pipes 403 can absorb the black powder floating in the air and then discharge it into the filter box 402 for filtration. On the one hand, it avoids the workers from inhaling the black powder and affecting their health. On the other hand, the black powder discharged into the filter box 402 can be collected later, saving costs.

[0033] The suction pipe 403 is a cylindrical tubular structure, and suction holes 404 are equidistantly opened on the outer wall of the suction pipe 403. The suction holes 404 are a diffusion-type suction structure of the suction pipe 403. The fan 401, filter box 402, suction pipe 403 and suction holes 404 together form the absorption component 4. During the absorption process, the absorption effect of black powder can be expanded through the equidistantly opened suction holes 404.

[0034] The screening device housing 1 has a first base block 101 welded to its left and right ends. Each first base block 101 is symmetrically threaded with a threaded support rod 102. Each threaded support rod 102 has a support block 103 rotating at its lower end. The support block 103 is in contact with the ground. When the ground is not level, the threaded support rod 102 can be rotated. With the support of the support block 103, the device can be adjusted horizontally, thus improving the stability of the device during use.

[0035] The front end of the screening device housing 1 is hinged to a door panel 104. When collecting black powder, the door panel 104 is opened, the collection box is placed below the second screening frame 209, and then the door panel 104 is closed.

[0036] Example 2, based on Example 1, such as Figures 1-8 As shown, a removable filter cotton can be installed in the filter box 402 for easy periodic replacement and black powder recovery; a collection box is installed at the discharge port of the first screening box 203 and the second screening box 209 for easy graded collection of black powder after screening.

[0037] The working principle of this embodiment is as follows: First, based on the flatness of the ground, rotate the threaded support rods 102 on both sides of the screening device housing 1, and adjust the height of the device by the contact between the support block 103 and the ground to ensure that the device is placed horizontally and stably; then, pour the waste lithium battery black powder to be screened into the first screening frame 203, and simultaneously start the first motor 210, the second motor 304 and the fan 401; the first motor 210 drives the drive block 211 to rotate, and the drive block 211 makes continuous elastic contact with the protrusion 205 on the first screening frame 203, which, together with the spring 204 on the guide rod 202, causes the first screening frame 203 to vibrate at a high frequency along the guide rod 202. At the same time, the first screening frame 203 drives the second screening frame 209 to vibrate synchronously through the connecting rod 208. The black powder is first screened by the first screening frame 203, and the black powder with a particle size smaller than the sieve hole of the first screening frame 203 falls into the second screening frame 209, and then undergoes fine screening by the second screening frame 209 to achieve graded separation; screening During the process, as the first screening frame 203 moves downward, the cleaning rod 207 on the frame 206 passes through the sieve holes of the first screening frame 203, automatically clearing the clogged particles and ensuring unobstructed sieve holes. Simultaneously, the second motor 304 drives the threaded rod 305 to rotate, driving the connecting block 302 to reciprocate along the sliding seat 301. The connecting block 302 drives the turning rake 303 to move synchronously, and the turning rake 303 contacts the bottom surface of the inner wall of the first screening frame 203, evenly spreading the accumulated black powder to ensure thorough screening. The blower 401 generates negative pressure, which absorbs the black powder scattered during the screening process through the air intake holes 404 on the air intake pipe 403. The black powder is then transported to the filter box 402 for filtration and collection through the air intake pipe 403. After screening, the first motor 210, the second motor 304, and the blower 401 are turned off. The graded black powder is collected from the discharge ports of the first screening frame 203 and the second screening frame 209, respectively. The scattered black powder is recovered from the filter box 402, completing the entire screening and separation process.

[0038] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. The scope of protection of this disclosure shall be determined by the scope of the claims.

Claims

1. A waste lithium battery black powder screening and separation device, characterized in that, include: The screening device housing (1) has a second base block (201) symmetrically welded on the inner side of the screening device housing (1). Each second base block (201) has a guide rod (202) symmetrically welded on it. A first screening frame (203) slides on the guide rod (202). Each guide rod (202) has a spring (204) sleeved on it for the first screening frame (203) to return to its upward position. A frame (206) is fixed on the second base block (201). Cleaning rods (207) are welded at equal intervals on the frame (206). The cleaning rods (207) are located below the first screening frame (203). The cleaning rods (207) are aligned with the sieve holes on the first screening frame (203). When the first screening frame (203) moves downward, the cleaning rods (207) pass through the first screening frame (203). A door panel (104) is hinged to the front end of the screening device housing (1) via a hinge.

2. The waste lithium battery black powder screening and separation device according to claim 1, characterized in that, The right end face of the housing (1) of the screening device is fixed with a first motor (210), and a drive block (211) is fixed on the output shaft of the first motor (210). When the first motor (210) rotates, the drive block (211) makes elastic contact with the first screening frame (203) and drives the first motor (210) to rotate.

3. The waste lithium battery black powder screening and separation device according to claim 2, characterized in that, The first screening box (203) has protrusions (205) welded at equal intervals. The protrusions (205) are semi-cylindrical structures. The protrusions (205) are aligned with the driving block (211). When the driving block (211) rotates, it is in continuous elastic contact with the protrusions (205).

4. The waste lithium battery black powder screening and separation device according to claim 3, characterized in that, The bottom end of the first screening frame (203) is symmetrically welded with a connecting rod (208), and a second screening frame (209) is welded to the lower end of the connecting rod (208). The sieve holes on the second screening frame (209) are smaller than the sieve holes on the first screening frame (203).

5. The waste lithium battery black powder screening and separation device according to claim 4, characterized in that, The second base block (201), guide rod (202), first screening frame (203), spring (204), protrusion (205), frame (206), cleaning rod (207), connecting rod (208), second screening frame (209), first motor (210) and drive block (211) together form the screening assembly (2); a sliding seat (301) is symmetrically fixed inside the screening device housing (1), a connecting block (302) slides on the sliding seat (301), a turning rake (303) slides on the connecting block (302), and the turning rake (303) contacts the bottom surface of the inner wall of the first screening frame (203).

6. The waste lithium battery black powder screening and separation device according to claim 5, characterized in that, A second motor (304) is fixed on the housing (1) of the screening device. A threaded rod (305) is fixed on the output shaft of the second motor (304). The threaded rod (305) is threadedly connected to the connecting block (302).

7. The waste lithium battery black powder screening and separation device according to claim 6, characterized in that, The sliding seat (301), connecting block (302), turning rake (303), second motor (304) and threaded rod (305) together form the turning assembly (3); a fan (401) and a filter box (402) are fixed on the right side of the screening device housing (1). The exhaust pipe of the fan (401) is connected to the filter box (402), and the air inlet pipe of the fan (401) is connected to the air suction pipe (403). The air suction pipe (403) is fixed on the top of the screening device housing (1).

8. The waste lithium battery black powder screening and separation device according to claim 7, characterized in that, The suction pipe (403) is a cylindrical tubular structure. Suction holes (404) are equidistantly opened on the outer wall of the suction pipe (403). The suction holes (404) are a diffusion-type suction structure of the suction pipe (403). The fan (401), filter box (402), suction pipe (403) and suction holes (404) together form the absorption assembly (4).

9. The waste lithium battery black powder screening and separation device according to claim 8, characterized in that, The left and right ends of the housing (1) of the screening device are each welded with a first base block (101). Each first base block (101) is symmetrically threaded with a threaded support rod (102). Each threaded support rod (102) has a support block (103) rotating at one end below it. The support block (103) is in contact with the ground.

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