Impurity removal equipment for lithium carbonate production

Abstract

The utility model belongs to the technical field of lithium carbonate, and particularly relates to lithium carbonate production impurity removal equipment which comprises two filtering pipelines symmetrically arranged, a flow limiting valve is arranged at one end of each filtering pipeline, and an inlet pipeline is fixedly arranged at the end, away from the filtering pipelines, of each flow limiting valve. A discharge pipeline is arranged at the end, away from the flow-limiting valve, of the filtering pipeline, a one-way valve is arranged in the discharge pipeline, and a detachable filtering assembly is arranged on the filtering pipeline; the detachable filtering assembly is connected with the filtering pipeline in an inserted mode, and a limiting buckle is arranged between the detachable filtering assembly and the filtering pipeline. According to the utility model, when the filter plate is blocked by the deposition accumulation of hydroxide, the solution can be filtered from the other filter pipeline through the flow-limiting valve, so that the filtration can be continuously carried out; meanwhile, due to the detachable arrangement of the detachable filter assembly, the filter plate is more convenient and quicker to replace and clean.

Description

Technical Field

[0001] The utility model belongs to the technical field of lithium carbonate, and in particular relates to equipment for removing impurities in lithium carbonate production. Background Art

[0002] Lithium carbonate, an inorganic compound, has the chemical formula Li2CO3. It is a colorless monoclinic crystal or white powder with a density of 2.11 g / cm³ and a melting point of 618°C (1.013×15Pa). It is soluble in dilute acid, slightly soluble in water, insoluble in alcohol and acetone. It can be used to make ceramics, drugs and catalysts, etc. It is a commonly used raw material for lithium-ion batteries.

[0003] Problems with existing technologies:

[0004] After the lithium sulfate solution is subjected to the alkalization and decalcification operation, the hydroxide or carbonate precipitates of the insoluble impurities are formed and need to be separated from the solution. Since the hydroxide precipitates formed are colloidal substances, they are easy to accumulate and cause the mesh holes on the filter plate to be blocked. The filter plate needs to be disassembled and cleaned. Most of the existing filter plates are inside the equipment, and a structure for limiting is fixedly connected to the filter plate, which makes cleaning more complicated. At the same time, when cleaning the mesh holes on the filter plate, the device needs to be shut down, resulting in the inability to continue filtration, resulting in low impurity removal efficiency, affecting the overall processing efficiency of lithium carbonate. Utility Model Content

[0005] The purpose of the utility model is to provide an impurity removal device for lithium carbonate production, which can realize that when a filter plate is blocked by hydroxide precipitation accumulation, the solution can be filtered from another filter pipe through a flow limiting valve, so that the filtration can be continued; at the same time, the detachable setting of the detachable filter component makes the replacement and cleaning of the filter plate more convenient and quick.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A lithium carbonate production impurity removal device, comprising: a filter pipe, the number of the filter pipes is two, the two filter pipes are symmetrically arranged, one end of the filter pipe is provided with a flow limiting valve, the end of the flow limiting valve away from the filter pipe is fixedly provided with an inlet pipe, the end of the filter pipe away from the flow limiting valve is provided with a discharge pipe, and a detachable filter assembly is provided on the filter pipe;

[0008] The detachable filter assembly is plug-connected with the filter pipe, a limit buckle is arranged between the detachable filter assembly and the filter pipe, the detachable filter assembly comprises a semi-annular plug-in frame, a filter frame is fixedly connected to the interior of the semi-annular plug-in frame, a filter plate and a limit plug-in frame are arranged inside the filter frame, the filter plate and the limit plug-in frame are plug-connected with the filter frame, a rotation limit assembly is movably connected to the filter frame, and the rotation limit assembly is used to limit the position of the limit plug-in frame.

[0009] The limiting buckle includes a buckle and a foot buckle, the buckle is fixedly connected to the filter pipe, the foot buckle is fixedly connected to the semi-annular plug-in frame, and the buckle is buckled with the foot buckle.

[0010] The rotation limiting assembly comprises a limiting rotation block, the filter frame is provided with a groove at a position corresponding to the limiting rotation block, one end of the limiting rotation block is rotationally connected to the groove, and the other end of the limiting rotation block is fixedly connected to a clamping protrusion.

[0011] The filter frame and the position-limiting plug-in frame are both provided with clamping grooves at positions corresponding to the clamping protrusions.

[0012] A handle is fixedly connected to the top of the semi-annular plug-in frame.

[0013] The technical effects achieved by the utility model are:

[0014] The utility model enables the device to filter hydroxide precipitation alternately through the cooperation of the flow limiting valve and the two filtering pipes, thereby preventing the equipment from stopping working due to cleaning due to clogging of the mesh holes on the filter plate, thereby affecting the filtering efficiency.

[0015] The utility model also has a design of a detachable filter assembly, which enables the filter plate inside the device to be taken out for replacement and cleaning, greatly improving the filter plate replacement efficiency and facilitating the subsequent cleaning of the filter plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a disassembly schematic diagram of the detachable filter assembly in the utility model;

[0018] Figure 3 It is a structural schematic diagram of a detachable filter assembly in the utility model;

[0019] Figure 4 It is a schematic diagram of the internal structure of the detachable filter assembly in the utility model;

[0020] Figure 5 It is a schematic diagram of the structure of B in the utility model;

[0021] Figure 6 It is a structural schematic diagram of A in the utility model;

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0023] 1. Filter pipe; 2. Limit buckle; 3. Removable filter assembly; 4. Flow limiting valve; 5. Semi-circular plug-in frame; 6. Handle; 7. Foot buckle; 8. Buckle; 9. Rotation limit assembly; 10. Filter frame; 11. Limit plug-in frame; 12. Filter plate; 13. Limit rotation block; 14. Snap-in groove; 15. Snap-in protrusion. DETAILED DESCRIPTION

[0024] In order to make the purpose and advantages of the utility model more clear, the utility model is specifically described in combination with the following embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the utility model, and does not strictly limit the protection scope of the specific request of the utility model.

[0025] like Figure 1 - Figure 4 As shown, a lithium carbonate production impurity removal device comprises: a filter pipe 1, the number of the filter pipes 1 is two, the two filter pipes 1 are symmetrically arranged, a limiting flow valve 4 is arranged at one end of the filter pipe 1, an inlet pipe is fixedly arranged at the end of the limiting flow valve 4 away from the filter pipe 1, a discharge pipe is arranged at the end of the filter pipe 1 away from the limiting flow valve 4, a one-way valve is arranged inside the discharge pipe, and a detachable filter assembly 3 is arranged on the filter pipe 1;

[0026] The detachable filter assembly 3 is plug-connected with the filter pipe 1, and a limit buckle 2 is arranged between the detachable filter assembly 3 and the filter pipe 1. The detachable filter assembly 3 includes a semi-annular plug-in frame 5, and a filter frame 10 is fixedly connected inside the semi-annular plug-in frame 5. A filter plate 12 and a limit plug-in frame 11 are arranged inside the filter frame 10. The filter plate 12 and the limit plug-in frame 11 are plug-connected with the filter frame 10. A rotation limit assembly 9 is movably connected to the filter frame 10, and the rotation limit assembly 9 is used to limit the limit plug-in frame 11.

[0027] Among them, through the cooperation of the flow limiting valve 4 and the two filtering pipes 1, the device can alternately filter the hydroxide precipitate to prevent the equipment from stopping working due to cleaning due to clogging of the mesh holes on the filter plate 12, thereby affecting the filtering efficiency; at the same time, the design of the detachable filter assembly 3 can remove the filter plate 12 inside the equipment for replacement and cleaning, which greatly improves the replacement efficiency of the filter plate 12 and facilitates the later cleaning of the filter plate 12.

[0028] See attached Figure 6The limit buckle 2 includes a buckle 8 and a foot buckle 7, the buckle 8 is fixedly connected to the filter pipe 1, the foot buckle 7 is fixedly connected to the semi-annular plug-in frame 5, and the buckle 8 and the foot buckle 7 are buckled and connected.

[0029] According to the above structure, when the filter plate 12 needs to be replaced, it is only necessary to rotate the lower end of the buckle 8 upward to release the buckle 8 from the foot buckle 7 so that the detachable filter assembly 3 loses its limit, and the detachable filter assembly 3 can be pulled out upward.

[0030] See attached Figure 5 The rotation limit assembly 9 includes a limit rotation block 13 , and the filter frame 10 is provided with a groove corresponding to the position of the limit rotation block 13 , one end of the limit rotation block 13 is rotatably connected to the groove, and the other end of the limit rotation block 13 is fixedly connected with a clamping protrusion 15 .

[0031] According to the above structure, the filter frame 10 is provided with a side of the rotation limit assembly 9 facing the direction close to the inlet pipe, which can reduce the pressure on the limit rotation block 13 during filtering.

[0032] See attached Figure 5 A snap-in groove 14 is provided at the position of the groove and the position-limiting plug-in frame 11 corresponding to the snap-in protrusion 15 .

[0033] According to the above structure, when the limit rotating block 13 rotates to the limit plug-in frame 11, the snap-in protrusion 15 is snap-connected with the snap-in groove 14 on the limit plug-in frame 11 to limit the limit rotating block 13. At this time, the limit rotating block 13 limits the limit plug-in frame 11. When the limit rotating block 13 rotates to the inside of the groove, the snap-in protrusion 15 is snap-connected with the snap-in groove 14 in the groove to limit the limit rotating block 13. At this time, the limit plug-in frame 11 is released from the limit and can be removed, so that the internal filter plate 12 can be taken out for replacement and cleaning.

[0034] See attached Figure 3 - Figure 4 A handle 6 is fixedly connected to the top of the semi-annular plug-in frame 5.

[0035] According to the above structure, the handle 6 is used to facilitate the upward withdrawal of the detachable filter assembly 3 .

[0036] The working principle of the utility model is as follows: the solution to be filtered flows from the inlet pipe through the flow limiting valve 4 into the filter pipe 1 for filtration, at which time one of the flow limiting valves 4 is in a closed state, and the other flow limiting valve 4 is in an open state, and at this time the filter pipe 1 on the side of the flow limiting valve 4 in the open state is used for filtration, and when the mesh holes on the filter plate 12 are clogged due to the accumulation of sediment in the filter pipe 1, the other flow limiting valve 4 is opened and the other filter pipe 1 is used for filtration, and at this time the flow limiting valve 4 on the side with the clogged mesh holes is closed, and when the solution in the filter pipe 1 is emptied, the filter plate 12 can be replaced;

[0037] This design enables the device to filter the hydroxide precipitate with two filter pipes 1 alternately, preventing the filter plate 12 from being clogged with mesh holes, causing the equipment to be cleaned and stopped, thus affecting the filtration efficiency;

[0038] When the filter plate 12 needs to be replaced, it is only necessary to rotate the lower end of the buckle 8 upward to release the buckle 8 and the foot buckle 7 so that the detachable filter assembly 3 loses the limit. At this time, the detachable filter assembly 3 can be pulled out upward. When the filter plate 12 needs to be taken out, the limit rotating block 13 is rotated. When the limit rotating block 13 is rotated to the inside of the groove, the snap-on protrusion 15 is snap-connected with the snap-on groove 14 in the groove to limit the limit rotating block 13. At this time, the limit plug-in frame 11 is released from the limit and can be removed, so that the internal filter plate 12 can be taken out for replacement and cleaning.

[0039] At the same time, the design of the detachable filter assembly 3 can remove the filter plate 12 inside the device for replacement and cleaning, which greatly improves the replacement efficiency of the filter plate 12 and facilitates the cleaning of the filter plate 12 at a later time.

[0040] The above are only preferred embodiments of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the art unless otherwise specified or limited.

Claims

1. A lithium carbonate production impurity removal device, characterized in that: include: A filter pipe (1), wherein the number of the filter pipes (1) is two, the two filter pipes (1) are symmetrically arranged, a flow limiting valve (4) is arranged at one end of the filter pipe (1), an inlet pipe is fixedly arranged at the end of the flow limiting valve (4) away from the filter pipe (1), a discharge pipe is arranged at the end of the filter pipe (1) away from the flow limiting valve (4), a one-way valve is arranged inside the discharge pipe, and a detachable filter assembly (3) is arranged on the filter pipe (1); The detachable filter assembly (3) is plug-connected with the filter pipe (1), a limit buckle (2) is arranged between the detachable filter assembly (3) and the filter pipe (1), the detachable filter assembly (3) comprises a semi-annular plug-in frame (5), a filter frame (10) is fixedly connected inside the semi-annular plug-in frame (5), a filter plate (12) and a limit plug-in frame (11) are arranged inside the filter frame (10), the filter plate (12) and the limit plug-in frame (11) are plug-connected with the filter frame (10), and a rotation limit assembly (9) is movably connected to the filter frame (10), and the rotation limit assembly (9) is used to limit the position of the limit plug-in frame (11).

2. A lithium carbonate production and impurity removal device according to claim 1, characterized in that: The limit buckle (2) comprises a buckle (8) and a foot buckle (7); the buckle (8) is fixedly connected to the filter pipe (1); the foot buckle (7) is fixedly connected to the semi-annular plug-in frame (5); and the buckle (8) and the foot buckle (7) are buckled and connected.

3. A lithium carbonate production and impurity removal device according to claim 1, characterized in that: The rotation limit assembly (9) comprises a limit rotation block (13); the filter frame (10) is provided with a groove at a position corresponding to the limit rotation block (13); one end of the limit rotation block (13) is rotationally connected to the groove; and the other end of the limit rotation block (13) is fixedly connected to a clamping protrusion (15).

4. A lithium carbonate production and impurity removal device according to claim 1, characterized in that: The filter frame (10) and the position-limiting plug-in frame (11) are both provided with a snap-in groove (14) at a position corresponding to the snap-in protrusion (15).

5. A lithium carbonate production and impurity removal device according to claim 1, characterized in that: A handle (6) is fixedly connected to the top of the semi-annular plug-in frame (5).

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