Filter pressing device for lithium carbonate production

Abstract

The utility model relates to the technical field of pressure filtration devices for lithium carbonate production, and discloses a pressure filtration device for lithium carbonate production, which comprises a bottom plate, a hydraulic cylinder, a screw rod and a mechanism spring, a device box is arranged on the bottom plate, and a feed hopper is arranged on the surface of the device box close to the top. And in the resetting process of the pressing plate, a rotating ring and a mechanism ring move under the action of a mechanism spring to drive a screw rod to rotate, and then a rotating scraping plate cleans slag on the surface of the screen to prevent accumulation.

Description

Technical Field

[0001] This utility model relates to the technical field of pressure filter devices for lithium carbonate production, specifically a pressure filter device for lithium carbonate production. Background Technology

[0002] The main raw material for lithium carbonate production is salt lake brine. Lithium carbonate is purified and separated from old brine with high magnesium and low lithium content. Lithium carbonate is an inorganic compound, a colorless monoclinic crystal or a white powder. It can be used to make ceramics, pharmaceuticals, catalysts, etc., and is a commonly used raw material for lithium-ion batteries. The production of lithium carbonate requires a semi-finished product solid-liquid separation process, which is usually carried out by a pressure filter device.

[0003] Currently, some lithium carbonate production filter press devices on the market include, for example, a utility model patent with authorization announcement number CN217312193U, which discloses a lithium carbonate production filter press device. This device uses a fixed plate inserted into the filter press device body, a limiting box fitted onto the fixed plate, and two bolts inserted through the limiting box into the slots inside the fixed plate to fix the fixed plate in the filter press device body. A filter screen is then used to filter the lithium carbonate material. The filter screen blocks impurities in the lithium carbonate material, effectively improving the quality of lithium carbonate filtration and facilitating the installation or replacement of the filter screen. However, this device cannot clean the filter screen during the filtration process, and the slag accumulated on the filter screen increases, thus affecting the filtration efficiency.

[0004] Therefore, we propose a pressure filter device for lithium carbonate production to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to solve the problem that some current lithium carbonate production filter presses cannot clean the filter screen during the filter press operation, resulting in more and more slag accumulating on the filter screen and affecting the filter press efficiency.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a filter press device for lithium carbonate production, comprising: a base plate, a device box provided on the base plate, a slag box and a mechanism cylinder provided on the side of the device box, a filter plate provided inside the device box, and a screen provided on the filter plate;

[0007] A hydraulic cylinder is installed on the top of the device box, and a pressure plate connected to the hydraulic cylinder is installed inside the device box;

[0008] A screw is installed inside a mechanism cylinder. A scraper is connected to the bottom of the screw. A rotating ring is threaded onto the screw. A mechanism ring is fitted over the rotating ring. Multiple first clamps are installed inside the mechanism ring to ensure that the rotating ring can only rotate in one direction.

[0009] The mechanism spring is located between the mechanism ring and the top wall of the mechanism cylinder;

[0010] The device box is equipped with a second locking component, which allows the scraper to rotate only in one direction.

[0011] A pull line is connected to the pressure plate, and the other end of the pull line is connected to the mechanism ring.

[0012] Furthermore, a wire-laying wheel is provided on the top wall of the inner wall of the mechanism cylinder, and the pull line overlaps with the wire-laying wheel. A wire-passing hole adapted to the pull line is opened near the top of the mechanism cylinder. A discharge port is opened at the position corresponding to the scraper plate of the device box. A limit groove is symmetrically opened on the inner wall of the mechanism cylinder. A limit block that is slidably connected to the limit groove is symmetrically arranged on the side of the mechanism ring.

[0013] Furthermore, the mechanism ring has multiple evenly distributed first spring cavities. The first locking component includes a first limiting plate and a first compression spring disposed within the first spring cavity. A first locking block is connected to the surface of the first limiting plate. One side of the first locking block is configured as an arc shape. A first locking groove adapted to the first locking block is provided on the side of the rotating ring. A second spring cavity is provided in the inner wall of the device box. The second locking component includes a second limiting plate and a second compression spring disposed within the second spring cavity. A second locking block is connected to the surface of the second limiting plate. One side of the second locking block is configured as an arc shape. A second locking groove adapted to the second locking block is symmetrically provided on the scraper plate.

[0014] Furthermore, the slag bin includes a bin body, a bin cover is provided on the bin body, and a feed inlet is opened at a position corresponding to the discharge port on the bin body.

[0015] Furthermore, a feed hopper is provided on the surface of the device box near the top.

[0016] Furthermore, the surface of the device box is set with an open structure near the bottom, and a liquid collection tank is set inside the device box near the bottom.

[0017] Furthermore, the device box surface has an inlet / outlet slot corresponding to the screen, and the device box surface has an arc-shaped groove. A limit post is fixed in the arc-shaped groove, and a blocking member is movably arranged in the arc-shaped groove. The blocking member includes an arc-shaped plate slidably connected to the arc-shaped groove, a baffle is connected to the arc-shaped plate, and a push plate is connected to the arc-shaped plate. A limit hole is provided on the arc-shaped plate that is slidably connected to the limit post.

[0018] The beneficial effects of this utility model are as follows: A slag box and a mechanism cylinder are provided on the side of the device box; a filter plate is provided inside the device box; a screen is provided on the filter plate; a hydraulic cylinder is provided on the top of the device box; a pressure plate connected to the hydraulic cylinder is provided inside the device box; a scraper plate is connected to the bottom of the screw inside the mechanism cylinder; a rotating ring is threaded onto the screw; a mechanism ring is sleeved on the rotating ring; multiple first clamping parts are provided inside the mechanism ring; a mechanism spring is provided between the mechanism ring and the top wall of the mechanism cylinder; a second clamping part is provided inside the device box; and a pull line is connected between the pressure plate and the mechanism ring. After the filter is pressed by the pressure plate, during the reset process of the pressure plate, the rotating ring and the mechanism ring move under the action of the mechanism spring, driving the screw to rotate. Then, the rotating scraper plate cleans the slag on the surface of the screen, preventing accumulation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the filter press device for lithium carbonate production according to this utility model;

[0020] Figure 2 This is a first cross-sectional view of the filter press device for lithium carbonate production according to this utility model;

[0021] Figure 3 This is a utility model Figure 2 A magnified schematic diagram of the local structure A;

[0022] Figure 4 This is a second cross-sectional view of the filter press device for lithium carbonate production according to this utility model;

[0023] Figure 5 This is a utility model Figure 4 A schematic diagram of the local structure B;

[0024] Figure 6 This is a third cross-sectional view of the filter press device for lithium carbonate production according to this utility model;

[0025] Figure 7 This is a utility model Figure 6 A schematic diagram of the local structure C;

[0026] Figure 8 This is a schematic diagram of the first part of the filter press device for lithium carbonate production according to this utility model;

[0027] Figure 9 This is a schematic diagram of the slag box structure of the filter press device for lithium carbonate production according to this utility model;

[0028] Figure 10 This is a schematic diagram of the second part of the filter press device for lithium carbonate production according to this utility model.

[0029] The names corresponding to each mark in the diagram:

[0030] 1. Base plate; 2. Device box; 3. Slag box; 301. Box body; 302. Box cover; 4. Mechanism cylinder; 5. Filter plate; 6. Screen; 7. Hydraulic cylinder; 8. Pressure plate; 9. Screw; 10. Scraper; 11. Rotating ring; 12. Mechanism ring; 13. Mechanism spring; 14. Pulling wire; 15. Wire wheel; 16. Discharge port; 17. Limiting block; 18. First spring cavity; 19. First limiting plate; 20. 21. First compression spring; 22. First locking block; 23. First locking groove; 24. Second spring cavity; 25. Second limiting plate; 26. Second compression spring; 27. Second locking block; 28. Second locking groove; 29. ​​Feed inlet; 30. Feed hopper; 31. Liquid collection tank; 32. Arc groove; 33. Limiting post; 34. Arc plate; 35. Baffle; 36. Push plate; 37. Bearing; 38. Annular plate; 39. Ball bearing. Detailed Implementation

[0031] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0032] Embodiments of this utility model:

[0033] like Figures 1-10 As shown, this utility model provides a filter press device for lithium carbonate production, including a base plate 1, a hydraulic cylinder 7, a screw 9, and a mechanism spring 13. A device box 2 is provided on the base plate 1. A feed hopper 29 is provided on the surface of the device box 2 near the top. A slag box 3 and a mechanism cylinder 4 are provided on the side of the device box 2. Lithium carbonate material can be introduced into the device box 2 through the feed hopper 29. A filter plate 5 is provided inside the device box 2. A screen 6 is provided on the filter plate 5. The screen 6 can perform solid-liquid separation and prevent clogging of the filter plate 5. The hydraulic cylinder 7 is located at the top of the device box 2. A pressure plate 8 connected to the hydraulic cylinder 7 is provided inside the device box 2. The pressure plate 8 is moved by the hydraulic cylinder 7 to perform the filter press operation.

[0034] like Figures 1-10As shown, the screw 9 is installed inside the mechanism cylinder 4. The top of the mechanism cylinder 4 is provided with a bearing 36 adapted to the screw 9. The bottom of the screw 9 is connected to a scraper plate 10. A rotating ring 11 is threaded onto the screw 9. A mechanism ring 12 is sleeved on the rotating ring 11. A mechanism spring 13 is installed between the mechanism ring 12 and the inner top wall of the mechanism cylinder 4. Multiple first locking components are provided inside the mechanism ring 12, so that the rotating ring 11 can only rotate in one direction. Multiple evenly distributed first spring cavities 18 are opened inside the mechanism ring 12. The first locking component includes a first limiting plate 19 and a first compression spring 20 installed inside the first spring cavity 18. A first locking block 21 is connected to the surface of the first limiting plate 19. One side of the first locking block 21 is set with an arc-shaped structure. A first locking groove 22 adapted to the first locking block 21 is opened on the side of the rotating ring 11.

[0035] The device box 2 is equipped with a second locking component, which allows the scraper plate 10 to rotate only in one direction. A second spring cavity 23 is formed in the inner wall of the device box 2. The second locking component includes a second limiting plate 24 and a second compression spring 25 disposed within the second spring cavity 23. A second locking block 26 is connected to the surface of the second limiting plate 24. One side of the second locking block 26 has an arc-shaped structure. The scraper plate 10 has symmetrically formed second locking grooves 27 that match the second locking block 26. A pull wire 14 is connected to the pressure plate 8, and the other end of the pull wire 14 is connected to the mechanism ring 12. A wire-laying wheel 15 is provided on the top wall of the mechanism cylinder 4, and the pull wire 14 overlaps with the wire-laying wheel 15. A wire-passing hole matching the pull wire 14 is formed near the top of the mechanism cylinder 4. A discharge port 16 is formed at the position corresponding to the scraper plate 10 in the device box 2. A limiting groove is symmetrically formed on the inner wall of the mechanism cylinder 4. The slag box 3 includes a box body 301 with a box cover 302 and a feed inlet 28 at a position corresponding to the discharge port 16. When the pressure plate 8 moves downward, the mechanism plate is pulled by the pull line 14. During the upward movement of the mechanism plate and the rotating ring 11, the rotating ring 11 rotates through the threaded engagement, while the screw 9 does not rotate under the action of the second clamp. When the pressure plate 8 moves upward after the filter is completed, the mechanism plate and the rotating ring 11 will move downward under the action of the mechanism spring 13. The rotating ring 11 will not rotate under the action of the first clamp, while the screw 9 drives the scraper plate 10 to rotate under the threaded engagement, cleaning the slag on the screen 6 and pushing it into the slag box 3 for collection through the discharge port 16 and the feed inlet 28.

[0036] like Figures 1-10 As shown, the surface of the device box 2 is set to an open structure near the bottom, and a collection tank 30 is set inside the device box 2 near the bottom. With this setting, the filtrate generated during the pressure filtration process can be collected.

[0037] like Figures 1-10 As shown, an inlet / outlet slot is provided on the surface of the device box 2 at a position corresponding to the screen 6, and an arc-shaped groove 31 is provided on the surface of the device box 2. A limit post 32 is fixed in the arc-shaped groove 31, and a blocking member is movably arranged in the arc-shaped groove 31. The blocking member includes an arc-shaped plate 33 that is slidably connected to the arc-shaped groove 31. A baffle 34 is connected to the arc-shaped plate 33, and a push plate 35 is connected to the arc-shaped plate 33. A limit hole that is slidably connected to the limit post 32 is provided on the arc-shaped plate 33. With this arrangement, the screen 6 can be blocked. When the screen 6 needs to be removed for replacement, the screen 6 can be removed simply by pushing the blocking member upward.

[0038] like Figures 1-10 As shown, the rotating ring 11 is connected to the side of the annular plate 37. The inner ring surface of the mechanism ring 12 is provided with an annular groove that is rotatably connected to the annular plate 37. Multiple balls 38 are provided on the annular plate 37. The inner wall of the annular groove is provided with a ball 38 groove that is adapted to the balls 38. This arrangement can reduce friction and facilitate the rotation of the rotating ring 11.

Claims

1. A filter press apparatus for lithium carbonate production, characterized in that, include: A base plate (1) is provided on the base plate (1), a device box (2) is provided on the side of the device box (2), a slag box (3) and a mechanism cylinder (4) are provided on the side of the device box (2), a filter plate (5) is provided inside the device box (2), and a screen (6) is provided on the filter plate (5); A hydraulic cylinder (7) is installed on the top of the device box (2), and a pressure plate (8) connected to the hydraulic cylinder (7) is installed inside the device box (2); A screw (9) is set inside the mechanism cylinder (4). A scraper (10) is connected to the bottom of the screw (9). A rotating ring (11) is threaded onto the screw (9). A mechanism ring (12) is sleeved on the rotating ring (11). Multiple first clamps are provided inside the mechanism ring (12) so that the rotating ring (11) can only rotate in one direction. The mechanism spring (13) is located between the mechanism ring (12) and the inner top wall of the mechanism cylinder (4); The device box (2) is equipped with a second clamp, which allows the scraper plate (10) to rotate only in one direction. A pull line (14) is connected to the pressure plate (8), and the other end of the pull line (14) is connected to the mechanism ring (12).

2. A filter press apparatus for lithium carbonate production according to claim 1, characterized in that: A wire-laying wheel (15) is provided on the inner top wall of the mechanism cylinder (4). The pull line (14) overlaps with the wire-laying wheel (15). A wire-passing hole adapted to the pull line (14) is opened near the top of the mechanism cylinder (4). A discharge port (16) is opened at the position corresponding to the scraper plate (10) of the device box (2). A limit groove is symmetrically opened on the inner wall of the mechanism cylinder (4). A limit block (17) that is slidably connected to the limit groove is symmetrically arranged on the side of the mechanism ring (12).

3. A filter press apparatus for lithium carbonate production according to claim 1, characterized in that: The mechanism ring (12) has a plurality of evenly distributed first spring cavities (18). The first locking member includes a first limiting plate (19) and a first compression spring (20) disposed in the first spring cavity (18). A first locking block (21) is connected to the surface of the first limiting plate (19). One side of the first locking block (21) is set with an arc-shaped structure. A first locking groove (22) adapted to the first locking block (21) is opened on the side of the rotating ring (11). A second spring cavity (23) is opened in the inner wall of the device box (2). The second locking member includes a second limiting plate (24) and a second compression spring (25) disposed in the second spring cavity (23). A second locking block (26) is connected to the surface of the second limiting plate (24). One side of the second locking block (26) is set with an arc-shaped structure. A second locking groove (27) adapted to the second locking block (26) is symmetrically opened on the scraper plate (10).

4. A filter press apparatus for lithium carbonate production according to claim 2, characterized in that: The slag bin (3) includes a bin body (301), a bin cover (302) is provided on the bin body (301), and a feed inlet (28) is opened at the position corresponding to the discharge port (16) of the bin body (301).

5. A filter press apparatus for lithium carbonate production according to claim 1, characterized in that: A feed hopper (29) is provided on the surface of the device box (2) near the top.

6. A filter press apparatus for lithium carbonate production according to claim 1, characterized in that: The surface of the device box (2) is set to an open structure near the bottom, and a liquid collection tank (30) is set inside the device box (2) near the bottom.

7. A filter press apparatus for lithium carbonate production according to claim 1, characterized in that: The device box (2) has an inlet and outlet slot at a position corresponding to the screen (6) on its surface, and an arc groove (31) is formed on the surface of the device box (2). A limit post (32) is fixed in the arc groove (31), and a blocking member is movably arranged in the arc groove (31). The blocking member includes an arc plate (33) that is slidably connected to the arc groove (31). A baffle (34) is connected to the arc plate (33), and a push plate (35) is connected to the arc plate (33). A limit hole that is slidably connected to the limit post (32) is formed on the arc plate (33).

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