A solid-liquid separation device for lithium sulfate production

Abstract

The utility model relates to lithium sulfate production technical field, and disclose a kind of solid-liquid separation device for lithium sulfate production, the device includes base and shell, base is annular and is provided with rotating groove in middle part;Shell is rotatably connected to the one end outside of base;Rotatably connected with separation assembly in shell interior, one end of shell near base is provided with rotary liquid inlet component, spiral vane is fixedly connected in shell interior, spiral vane continuously extends from one end of shell to its other end, separation assembly is provided with reverse osmosis cleaning assembly for cleaning separation assembly in interior.The device is sent into shell interior by rotary liquid inlet component with lithium sulfate solution, solid-liquid separation is carried out using hard metal mesh tube and filter cloth in separation assembly, and continuous efficient separation process is realized by spiral vane and gear disc drive, meanwhile, reverse osmosis cleaning assembly is equipped to prevent the blockage of filter cloth and semi-permeable membrane, ensure the automation and high efficiency of lithium sulfate production.

Description

Technical Field

[0001] This utility model relates to the field of lithium sulfate production technology, specifically to a solid-liquid separation device for lithium sulfate production. Background Technology

[0002] The main technical solutions for solid-liquid separation devices in the lithium sulfate production process include sedimentation tanks, hydrocyclones, filter cloth filtration, and ultrafiltration / nanofiltration. Sedimentation tanks utilize gravity to settle solids, hydrocyclones accelerate separation through centrifugal force, filter cloth filtration uses physical screening to retain solids, and ultrafiltration / nanofiltration utilizes the selective separation of semi-permeable membranes.

[0003] The main drawbacks of the above scheme include: the efficiency of the sedimentation tank is affected by the solution flow rate and sedimentation time, and there may be problems with the solids not being able to settle completely;

[0004] Hydrocyclones may be sensitive to solid particle size and have limited processing capacity; cloth filtration may cause filter clogging and difficulties in solid recovery; ultrafiltration / nanofiltration equipment is costly, the membrane is prone to fouling and clogging, and it is sensitive to solution concentration and temperature. Overall, these solutions may have limitations in terms of efficiency, cost, and operational complexity when processing lithium sulfate solutions with different characteristics.

[0005] Therefore, we propose a solid-liquid separation device for lithium sulfate production to address the problems mentioned above. Utility Model Content

[0006] The purpose of this invention is to provide a solid-liquid separation device for lithium sulfate production, so as to solve the problems of low efficiency, easy clogging, and difficulty in solid recovery in the existing solid-liquid separation devices mentioned in the background art.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0008] A solid-liquid separation device for lithium sulfate production includes a base and an outer shell. The base is annular and has a rotating groove in the middle. The outer shell is rotatably connected to the outer side of one end of the base. A separation component is rotatably connected inside the outer shell. A rotating liquid inlet component is provided at one end of the outer shell near the base. A spiral blade is fixedly connected inside the outer shell. The spiral blade extends continuously from one end of the outer shell to the other end and is attached to the outer side of the separation component. A reverse osmosis cleaning component is provided inside the separation component for cleaning the separation component.

[0009] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0010] This utility model discloses a solid-liquid separation device for lithium sulfate production, which achieves efficient solid-liquid separation through a rotating structure. It includes a rotating outer shell, an embedded separation component, and spiral blades. The outer shell is connected to a base, and a rotating inlet component is located below to transport the lithium sulfate solution into the separation component. The separation component uses a rigid metal mesh cylinder inside, wrapped with filter cloth on the outside, to screen solids in the solution. The spiral blades, through rotation, continuously propel the separated solids to a receiving hopper for timely discharge. A rotating groove on the base connects to a cylinder, which rotates to the bottom of the separation component. The discharge chamber is connected to a discharge pipe for solid discharge. A reverse osmosis cleaning component uses an air pump to spray gas to flush the separation component, maintaining effective filtration. A rotating gear disk efficiently provides power, synchronously rotating the outer shell and spiral blades, causing the separated liquid to enter the separation component through the inlet at the far end. This effectively traps solid particles in the solution, preventing secondary pollution and ultimately achieving high-efficiency, energy-saving, and stable solid-liquid separation. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall external structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the internal cross-sectional structure of this utility model;

[0013] Figure 3 This is a schematic diagram of the unfolded structure of this utility model;

[0014] Figure 4 This is a cross-sectional view of the separation component of this utility model.

[0015] The components include: 1. Base; 2. Outer shell; 3. Rotating groove; 4. Separation assembly; 5. Rotating liquid inlet assembly; 6. Circulating groove; 7. Liquid inlet pipe; 8. Liquid inlet hole; 9. Connecting plate; 10. Rigid metal mesh cylinder; 11. Filter cloth; 12. Cylinder; 13. Discharge pipe; 14. Gear disk; 15. Rotating drive component; 18. Spiral blade; 19. Receiving hopper; 20. Discharge pipe; 22. Support; 23. Air pump; 24. Main conveying pipe; 25. Branch pipe; 26. Air jet pipe; 27. Spray hole. Detailed Implementation

[0016] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Example 1:

[0018] Please see Figure 1-4 This utility model provides a technical solution:

[0019] A solid-liquid separation device for lithium sulfate production includes a base 1 and an outer shell 2. The base 1 is annular and has a rotating groove 3 in the middle. The outer shell 2 is rotatably connected to the outer side of one end of the base 1.

[0020] A separation component 4 is rotatably connected inside the outer shell 2. A rotating liquid inlet component 5 is provided at one end of the outer shell 2 near the base 1. The rotating liquid inlet component 5 includes an annular channel 6, which is rotatably and sealed to the outside of the outer shell 2. An inlet pipe 7 is fixedly connected to the side of the annular channel 6 away from the outer shell 2. Multiple inlet holes 8 are opened inside the annular channel 6 in the outer shell 2. A connecting plate 9 is fixedly connected between the annular channel 6 and the base 1 to keep the annular channel 6 and the base 1 stable. When the rotating liquid inlet component 5 is working, lithium sulfate solution enters the annular channel 6 through the inlet pipe 7. The lithium sulfate solution inside the annular channel 6 flows into the outer shell 2 through the inlet holes 8. The separation component 4 inside the outer shell 2 then performs solid-liquid separation of the lithium sulfate solution. Since the annular channel 6 is rotatably connected to the outer shell 2, the rotating liquid inlet component 5 can also deliver lithium sulfate solution into the outer shell 2 when the outer shell 2 rotates.

[0021] Furthermore, the separation component 4 includes a rigid metal mesh cylinder 10, which is made of a high-strength metal material, such as stainless steel, carbon steel, alloy steel, etc., preferably stainless steel.

[0022] A filter cloth 11 is fixedly connected to the outside of the rigid metal mesh cylinder 10. The lithium sulfate solution entering between the outer shell 2 and the separation component 4 is separated into solid and liquid through the filter cloth 11. The liquid of the lithium sulfate solution passes through the pores of the filter cloth 11 and the mesh of the rigid metal mesh cylinder 10 and enters the interior of the separation component 4. A cylinder 12 is fixedly connected to the bottom of the rigid metal mesh cylinder 10. The cylinder 12 is rotatably connected to the rotating groove 3 of the base 1. A discharge pipe 13 is fixedly connected to one end of the cylinder 12 near the base 1 to discharge the filtered liquid.

[0023] The filter cloth 11 is wrapped around the outer surface of the rigid metal mesh cylinder 10, and the rigid metal mesh cylinder 10 supports the filter cloth 11. The filter cloth 11 covers the outside of the cylindrical rigid metal mesh cylinder 10, so that solid-liquid separation can be carried out on the circumference of the rigid metal mesh cylinder 10, thereby increasing the filtration area and improving the solid-liquid separation efficiency.

[0024] Furthermore, the rigid metal mesh cylinder 10 is equipped with an ultrafiltration component, which includes a semi-permeable membrane. The semi-permeable membrane is uniformly attached to the inner wall of the rigid metal mesh cylinder 10 and supported by the rigid metal mesh cylinder 10. The function of the semi-permeable membrane is to allow water molecules and smaller molecules to pass through while retaining larger solutes and particles, thus achieving a finer solid-liquid separation than the filter cloth 11.

[0025] Furthermore, in order to improve the solid-liquid separation efficiency and output the separated solids, a spiral blade 18 is fixedly connected inside the outer shell 2, and the spiral blade 18 extends continuously from one end of the outer shell to the other end.

[0026] The inner edge of the spiral blade 18 is attached to the filter cloth 11. A gear disk 14 is fixedly connected to one end of the outer shell 2 near the base 1. A rotary drive component 15 for driving the gear disk 14 to rotate is installed on the base 1. The rotary drive component 15 includes a servo motor and a drive gear. The drive gear drives the gear disk 14 to rotate. The gear disk 14 drives the outer shell 2 and the spiral blade 18 inside the outer shell 2 to rotate. When the spiral blade 18 rotates in the forward direction, the lithium sulfate solution entering the outer shell 2 rises with the rotation of the spiral blade 18.

[0027] As the lithium sulfate solution rises, it passes through the filter cloth 11 for solid-liquid separation. The liquid enters the inner side of the filter cloth 11 and flows downward under the influence of gravity, finally being discharged through the discharge pipe 13 inside the cylinder 12. The separated lithium sulfate solid continues to rise with the rotation of the spiral blade 18 and is output outward through the upper end of the outer shell 2. Through the above scheme, as the lithium sulfate solution rises with the rotation of the spiral blade 18, the separation area of ​​the lithium sulfate solution on the outer side of the filter cloth 11 is further increased, which greatly improves the solid-liquid separation efficiency. Moreover, the lithium sulfate solid is continuously output during the separation process, eliminating the need for manual cleaning, making the separation operation simpler, saving operation steps in the separation process, and further improving the separation efficiency.

[0028] Furthermore, a receiving hopper 19 is fixedly connected to the outer end of the outer shell 2 away from the base 1. The receiving hopper 19 is annular and its inner bottom is inclined. A discharge pipe 20 is fixedly connected to the lowest position of the bottom of the receiving hopper 19. The end of the separation component 4 near the receiving hopper 19 extends to the outside of the outer shell 2 to prevent lithium sulfate solid from falling into the interior of the separation component 4 from the port of the outer shell 2.

[0029] Furthermore, a reverse osmosis cleaning component is installed inside the separation assembly 4. The reverse osmosis cleaning component includes a support 22, on which an air pump 23 is mounted. The air outlet of the air pump 23 is fixedly connected to a main delivery pipe 24. Two branch pipes 25 are connected to the main delivery pipe 24. The end of the branch pipe 25 away from the main delivery pipe 24 is fixedly connected to a jet pipe 26. The jet pipe 26 has evenly distributed nozzles 27. The jet pipe 26 is located inside the separation assembly 4, with the nozzles 27 facing the separation assembly 4. High-pressure gas is output by the air pump 23 and enters the branch pipes 25 through the main delivery pipe 24. Then, the gas enters the jet pipe 26 through the branch pipe 25. The high-pressure gas is sprayed onto the semi-permeable membrane or filter cloth 11 through the nozzle 27 of the jet pipe 26. Since the jet pipe 26 is located inside the separation component 4, the high-pressure gas backflows from the inside of the semi-permeable membrane or filter cloth 11 to the outside, thereby removing the particles attached to the semi-permeable membrane or filter cloth 11 and maintaining the high-efficiency filtration characteristics of the semi-permeable membrane or filter cloth 11. In addition, during the solid-liquid separation process, the spiral blades 18 rotate outside the filter cloth 11 and adhere to the filter cloth 11, thereby scraping off the solid particles attached to the surface of the filter cloth 11 and preventing the filter pores of the filter cloth 11 from becoming clogged.

[0030] The working principle of the solid-liquid separation device for lithium sulfate production is as follows: First, the lithium sulfate solution enters the annular tank 6 through the inlet pipe 7 in the rotating inlet assembly 5, and then flows into the outer shell 2 through multiple inlet holes 8 on the tank. Inside the outer shell 2, in the separation assembly 4, the lithium sulfate solution first comes into contact with the filter cloth 11 outside the rigid metal mesh cylinder 10. The liquid portion of the solution enters the separation assembly 4 through the pores of the filter cloth 11 and the metal mesh cylinder, while the solid portion is retained on the filter cloth 11. Subsequently, driven by the spiral blades 18, the solution continues to rise, further increasing the separation area of ​​the solution outside the filter cloth 11, thus improving the solid-liquid separation efficiency. The solid lithium sulfate rises with the rotation of the spiral blades 18 until it is output at the upper end of the outer shell 2. At the same time, the separated liquid is discharged through the discharge pipe 13 inside the cylinder 12. During the separation process, to prevent clogging of the filter cloth 11 and the semi-permeable membrane, a reverse osmosis cleaning component is installed inside the device. High-pressure gas generated by the air pump 23 backflushes from the inside of the semi-permeable membrane or filter cloth 11 to the outside, removing attached particles and maintaining filtration efficiency. The spiral blades 18 also adhere to the filter cloth 11, scraping off solid particles from the surface of the filter cloth 11 to prevent clogging of the filter pores. Throughout the process, the rotation of the outer casing 2 and the spiral blades 18, along with the backflushing cleaning by the air pump 23, jointly achieve efficient and continuous lithium sulfate solid-liquid separation.

[0031] Although specific embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these specific embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A solid-liquid separation device for lithium sulfate production, characterized in that: Includes a base (1) and an outer shell (2). The base (1) is annular and has a rotating groove (3) in the middle. The outer shell (2) is rotatably connected to the outer side of one end of the base (1). A separation component (4) is rotatably connected inside the outer shell (2). A rotating liquid inlet component (5) is provided at one end of the outer shell (2) near the base (1). A spiral blade (18) is fixedly connected inside the outer shell (2). The spiral blade (18) extends continuously from one end of the outer shell to the other end. The spiral blade (18) is attached to the outer side of the separation component (4). A reverse osmosis cleaning component for cleaning the separation component (4) is provided inside the separation component (4).

2. The solid-liquid separation device for lithium sulfate production according to claim 1, characterized in that: The rotating liquid inlet assembly (5) includes an annular groove (6), which is rotatably and sealed to the outside of the outer shell (2). The side of the annular groove (6) away from the outer shell (2) is fixedly connected to an inlet pipe (7). The outer shell (2) is provided with multiple inlet holes (8) located inside the annular groove (6). A connecting plate (9) is fixedly connected between the annular groove (6) and the base (1).

3. A solid-liquid separation device for lithium sulfate production according to claim 2, characterized in that: The separation component (4) includes a rigid metal mesh cylinder (10), which is made of stainless steel.

4. A solid-liquid separation device for lithium sulfate production according to claim 3, characterized in that: The outer side of the rigid metal mesh cylinder (10) is fixedly connected to a filter cloth (11) for solid-liquid separation of lithium sulfate solution.

5. A solid-liquid separation device for lithium sulfate production according to claim 4, characterized in that: The bottom of the rigid metal mesh cylinder (10) is fixedly connected to a cylinder (12), which is rotatably connected to the rotating groove (3) of the base (1). The end of the cylinder (12) near the base (1) is fixedly connected to a discharge pipe (13).

6. A solid-liquid separation device for lithium sulfate production according to claim 5, characterized in that: The rigid metal mesh cylinder (10) is equipped with an ultrafiltration component, which includes a semi-permeable membrane. The semi-permeable membrane is uniformly attached to the inner wall of the rigid metal mesh cylinder (10) and is supported by the rigid metal mesh cylinder (10).

7. A solid-liquid separation device for lithium sulfate production according to claim 1, characterized in that: The inner edge of the spiral blade (18) is attached to the filter cloth (11), and a gear disk (14) is fixedly connected to one end of the outer shell (2) near the base (1). A rotary drive (15) for driving the gear disk (14) to rotate is installed on the base (1).

8. A solid-liquid separation device for lithium sulfate production according to claim 7, characterized in that: The rotary drive (15) includes a servo motor and a drive gear. The drive gear drives the gear disk (14) to rotate, and the gear disk (14) drives the outer shell (2) and the spiral blades (18) inside the outer shell (2) to rotate.

9. A solid-liquid separation device for lithium sulfate production according to claim 7, characterized in that: The outer shell (2) is fixedly connected to a receiving hopper (19) at one end away from the base (1). The receiving hopper (19) is annular and its bottom is inclined. The lowest position of the bottom of the receiving hopper (19) is fixedly connected to a discharge pipe (20). The end of the separation component (4) near the receiving hopper (19) extends to the outside of the outer shell (2) to prevent lithium sulfate solid from falling into the interior of the separation component (4) from the port of the outer shell (2).

10. A solid-liquid separation device for lithium sulfate production according to claim 1, characterized in that: The reverse osmosis cleaning assembly includes a support (22), on which an air pump (23) is installed. The air outlet of the air pump (23) is fixedly connected to a main conveying pipe (24). Two branch pipes (25) are connected to the main conveying pipe (24). The end of the branch pipe (25) away from the main conveying pipe (24) is fixedly connected to a jet pipe (26). The jet pipe (26) has evenly distributed nozzles (27). The jet pipe (26) is located inside the separation assembly (4), and the nozzles (27) of the jet pipe (26) face the separation assembly (4).

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