Screening structure for lithium carbonate production

Abstract

A kind of lithium carbonate preparation with screening structure, including support, the support is equipped with box, the top of box is equipped with screening frame, the bottom of box is equipped with unloading pipe, the top of screening frame is opened, the bottom of screening frame is equipped with multiple groups of screening port, first screen is equipped on screening port, one of first screen is equipped with discharge port, discharge port is connected with collection barrel by guide pipe, box is equipped with collection structure matched with screening frame.Using the above structure, through annular material pushing cooperation screening, not only can quickly separate solid-liquid, but also can rely on annular path to continue pushing material to avoid filter screen blockage, significantly improve screening efficiency;Lithium carbonate crystal particles continue to move automatically collected with pushing material, multiple filter material cooperation, greatly improve the efficiency of screening and collecting material;Device overall structure is simple and reasonable, operation is continuous and stable, and practicality is strong.

Description

Technical Field

[0001] This utility model relates to the field of lithium ion extraction technology, and in particular to a sieving structure for lithium carbonate preparation. Background Technology

[0002] Lithium-ion batteries are the most widely used type of battery in current electronic products. Lithium carbonate is the basic raw material for lithium battery materials. Waste lithium batteries contain a large amount of valuable lithium carbonate; if not recycled, it not only wastes resources but also pollutes the environment. After recycling, lithium carbonate crystal particles can be separated by dissolving and precipitating the lithium. Existing technology for screening lithium carbonate crystal particles uses simple structures, relying solely on filters. However, the accumulation of lithium carbonate crystal particles easily clogs the filters, affecting screening efficiency and requiring frequent manual cleaning, resulting in high labor costs and unsuitability for continuous processing. Summary of the Invention The technical problem to be solved by this utility model is to provide a sieving structure for lithium carbonate preparation. By combining annular pusher with sieving, it can not only quickly separate solid and liquid, but also rely on the annular path to continuously push the material to avoid filter screen clogging, thus significantly improving sieving efficiency. Lithium carbonate crystal particles are automatically collected as the material is pushed. The combination of multiple filter materials greatly improves the efficiency of sieving and collecting materials. The overall structure of the device is simple and reasonable, the operation is continuous and stable, and it is highly practical.

[0003] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a sieving structure for lithium carbonate preparation, including a support, a box body on the support, a sieving frame on the top of the box body, a discharge pipe on the bottom of the box body, an opening at the top of the sieving frame, multiple sets of sieving ports at the bottom of the sieving frame, a first filter screen on the sieving port, a discharge port on one of the first filter screens, the discharge port being connected to a collection bucket through a guide pipe, and a collection structure on the box body that cooperates with the sieving frame.

[0004] In a preferred embodiment, the collection structure includes a fixed base located at the bottom of the box, the fixed base being fixedly connected to a drive motor, the output end of the drive motor being connected to a rotating shaft, and the rotating shaft being provided with multiple sets of sweeping plates that cooperate with the inner wall of the bottom of the screening frame.

[0005] In a preferred embodiment, a shaft seal is provided at the connection point between the rotating shaft and the housing.

[0006] In a preferred embodiment, the bottom of the screening frame is provided with a guide ramp.

[0007] In a preferred embodiment, a second filter screen is provided at the bottom of the portion of the feed pipe located inside the box. In a preferred embodiment, the bottom of the box is provided with a material collection hood, and the unloading pipe is located at the material collection position of the material collection hood.

[0008] In a preferred embodiment, the top of the screening frame is provided with a wide-mouth feed chute.

[0009] The sieve structure for lithium carbonate preparation provided by this utility model has the following beneficial effects by adopting the above structure: (1) By using the ring pusher in conjunction with screening, not only can solids and liquids be separated quickly, but the continuous pusher along the ring path can also prevent the filter screen from clogging, thus significantly improving screening efficiency. (2) The lithium carbonate crystal particles are automatically collected as the feed continues to move, and the combination of multiple filter materials greatly improves the efficiency of screening and collection. (3) The overall structure of the device is simple and reasonable, the operation is continuous and stable, and it is highly practical. Attached Figure Description

[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0011] Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0012] Figure 3 This is a schematic diagram of the screening frame structure of this utility model.

[0013] Figure 4 This is a schematic diagram of the screening frame structure of this utility model.

[0014] In the diagram: support 1, box 2, screening frame 3, wide-mouth feed chute 4, material collection hood 5, discharge pipe 6, fixed seat 7, drive motor 8, shaft seal 9, rotating shaft 10, sweeping plate 11, guide ramp 12, screening port 13, first filter screen 14, discharge port 15, guide pipe 16, collection bucket 17, second filter screen 18. Detailed Implementation

[0015] Example 1: like Figure 1-4A sieving structure for lithium carbonate preparation includes a support 1, which provides stable support for the overall sieving structure to prevent sieving accuracy from being affected by structural shaking during the sieving process. A box 2 is fixedly mounted on the support 1. The box 2 is a hollow, closed structure to prevent lithium carbonate crystal particles from scattering to the outside during the sieving process and to prevent external impurities from entering and contaminating the material. A sieving frame 3 is provided on the top of the box 2. The sieving frame 3 is detachably connected to the box 2 to facilitate subsequent maintenance or replacement of the internal components of the sieving frame 3. The top opening of the sieving frame 3 is used to receive the lithium carbonate crystal particles to be sieved. The bottom of the sieving frame 3 has a hollow design and is provided with multiple sets of sieving ports 13. 3. Uniform distribution to ensure uniform contact of materials with the screening components. A first filter screen 14 is fixedly installed on the screening port 13. The first filter screen 14 is used for preliminary solid-liquid screening of lithium carbonate crystal particles. One of the first filter screens 14 is provided with a discharge port 15. The discharge port 15 is specifically used to discharge the screened particles retained by the first filter screen 14. The discharge port 15 is connected to the collection bucket 17 through the guide pipe 16. The guide pipe 16 can stably guide the screened particles to the collection bucket 17. The collection bucket 17 realizes the centralized collection of the screened particles. The box 2 is provided with a collection structure that cooperates with the screening frame 3. This collection structure is used to centrally guide the screened particles after screening by the first filter screen 14 to avoid the accumulation of particles in the screening frame 3. like Figure 3-4 In the preferred embodiment, the collection structure includes a fixed base 7 located at the bottom of the housing 2. The fixed base 7 provides a stable mounting foundation for the drive motor 8, preventing displacement of the drive motor 8 during operation. The fixed base 7 is fixedly connected to the drive motor 8. The output end of the drive motor 8 is connected to the rotating shaft 10 through a transmission structure to ensure that the power of the drive motor 8 is stably transmitted to the rotating shaft 10. The rotating shaft 10 is provided with multiple sets of sweeping plates 11 that cooperate with the bottom inner wall of the screening frame 3. The edges of the sweeping plates 11 are tightly fitted with the bottom inner wall of the screening frame 3, and the angle of the sweeping plates 11 is adapted to the bottom shape of the screening frame 3, so that the surface of the first filter screen 14 can be cleaned under the drive of the rotating shaft 10. like Figure 2 In a preferred embodiment, a shaft seal 9 is provided at the connection position between the rotating shaft 10 and the housing 2. The shaft seal 9 can achieve a seal between the rotating shaft 10 and the housing 2, preventing lithium carbonate crystal particles inside the housing 2 from leaking from the connection gap, while also preventing external dust and other impurities from entering the interior of the housing 2. like Figure 3 In the preferred embodiment, the bottom of the screening frame 3 is provided with a guide ramp 12. The guide ramp 12 is located in the middle position and is distributed at an incline at the bottom of the screening frame 3. Its incline direction is adapted to the cleaning direction of the sweeping plate 11, which can help qualified particles to gather at the bottom of the box 2 and reduce the residue of particles in the middle of the bottom of the screening frame 3.

[0016] like Figure 4In a preferred embodiment, the bottom portion of the feed pipe 16 located inside the housing 2 is provided with a second filter screen 18. The pore size of the second filter screen 18 is the same as that of the first filter screen 14, which can perform secondary screening and solid-liquid separation of the material in the feed pipe 16. like Figure 2 In the preferred embodiment, the bottom of the box 2 is provided with a material gathering cover 5, which has a gathering structure. The discharge pipe 6 is located at the material gathering position of the material gathering cover 5, ensuring that the liquid after solid-liquid separation can be stably discharged from the box 2 through the discharge pipe 6. like Figure 1-2 In the preferred embodiment, the top of the screening frame 3 is provided with a wide-mouth feed trough 4. The opening area of ​​the wide-mouth feed trough 4 is larger than the opening area of ​​the top of the screening frame 3, and its inner wall is flared, which facilitates the rapid and uniform feeding of the material to be screened into the screening frame 3 and avoids the accumulation and blockage of the material at the feed inlet.

[0017] Example 2: like Figure 1-4 The working principle of this utility model is as follows: The lithium carbonate crystal particles to be screened are fed into the equipment through the wide-mouth feed chute 4 at the top of the screening frame 3. Because the opening area of ​​the wide-mouth feed chute 4 is larger than the opening at the top of the screening frame 3 and the inner wall is flared, the material can be prevented from accumulating and blocking at the feed inlet, and the material can be evenly distributed inside the screening frame 3. The material entering the screening frame 3 falls naturally onto the multiple sets of first filter screens 14 at the bottom. Since the multiple screening ports 13 and the first filter screens 14 are evenly distributed, the material can fully contact the filter screens. During the initial screening process, the bottom collection structure of the box 2 starts synchronously, the drive motor 8 on the fixed seat 7 runs, and multiple sets of sweeping plates 11 rotate. Because the edge of the sweeping plate 11 is closely attached to the inner wall of the bottom of the screening frame 3 and the angle is suitable, the particles screened on the surface of the first filter screen 14 can be cleaned in real time when rotating, avoiding the accumulation of particles sticking and clogging the filter screen while collecting the screened material. The sweeping plate 11 continuously sweeps, gradually pushing the screened particles on the surface of the first filter screen 14 to the filter screen position with the discharge port 15. Excess particles enter the guide pipe 16 through the discharge port 15. When the material flows in the guide pipe 16, the second filter screen 18 at the bottom of the guide pipe continues to screen and separate the solid and liquid for a second time, and collects them in the collection bucket 17. The beneficial effects of this utility model are as follows: by combining the annular pusher with screening, not only can solid and liquid be separated quickly, but the continuous pusher along the annular path can also prevent the filter screen from clogging, thus significantly improving screening efficiency; lithium carbonate crystal particles are automatically collected as the pusher moves continuously, and the combination of multiple filter media greatly improves the screening and collection efficiency; the overall structure of the device is simple and reasonable, the operation is continuous and stable, and it is highly practical.

Claims

1. A sieve structure for lithium carbonate preparation, comprising a support (1), characterized in that: The support (1) is provided with a box (2), the top of the box (2) is provided with a screening frame (3), the bottom of the box (2) is provided with a discharge pipe (6), the top of the screening frame (3) is open, the bottom of the screening frame (3) is provided with multiple screening ports (13), the screening port (13) is provided with a first filter screen (14), one of the first filter screens (14) is provided with a discharge port (15), the discharge port (15) is connected to the collection bucket (17) through the guide pipe (16), and the box (2) is provided with a collection structure that cooperates with the screening frame (3).

2. The sieve structure for lithium carbonate preparation according to claim 1, characterized in that: The collection structure includes a fixed seat (7) set at the bottom of the box (2), the fixed seat (7) is fixedly connected to the drive motor (8), the output end of the drive motor (8) is connected to the rotating shaft (10), and the rotating shaft (10) is provided with multiple sets of sweeping plates (11) that cooperate with the bottom inner wall of the screening frame (3).

3. The sieve structure for lithium carbonate preparation according to claim 2, characterized in that: The connection between the rotating shaft (10) and the housing (2) is provided with a shaft seal (9).

4. The sieve structure for lithium carbonate preparation according to claim 1, characterized in that: The bottom of the screening frame (3) is provided with a guide ramp (12).

5. The sieve structure for lithium carbonate preparation according to claim 1, characterized in that: The bottom of the portion of the feed pipe (16) located inside the box (2) is provided with a second filter screen (18).

6. The sieve structure for lithium carbonate preparation according to claim 1, characterized in that: The bottom of the box (2) is provided with a material collection cover (5), and the unloading pipe (6) is located at the material collection position of the material collection cover (5).

7. The sieve structure for lithium carbonate preparation according to claim 1, characterized in that: The top of the screening frame (3) is provided with a wide-mouth feed chute (4).

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