Purification device for LIFSI preparation

Abstract

The utility model relates to the technical field of purification, in particular to a purification device for LIFSI preparation, which comprises a connecting barrel, the top of the connecting barrel is rotatably connected with a rotating cover, the inner wall of the connecting barrel is fixedly connected with a fixing ring, and a filter basket is arranged on the fixing ring; the filter basket comprises a second sealing ring, and the bottom of the second sealing ring is attached to the fixing ring. The device has the beneficial effects that the rotating cover, the fixing ring and the filtering basket are matched, the rotating cover is rotated to extrude the filtering basket through the U-shaped elastic piece and the extrusion plate, the sealing effect is improved, different sealing points of the second sealing ring and the fixing ring are pressurized by adjusting the adjusting bolt, leakage caused by aging or abrasion of the sealing ring after the device is used for a long time is prevented, and the service life of the device is prolonged. Meanwhile, the height of the filter basket is adjusted, the situation that the extrusion force of the U-shaped elastic piece on the filter basket is reduced after long-term use, and consequently sealing is not firm is prevented, and the long-term durability and environmental adaptability of the device are improved.

Description

Technical Field

[0001] This utility model relates to the field of purification equipment, specifically a purification device for LIFSI preparation. Background Technology

[0002] In the field of lithium-ion battery material manufacturing, lithium bisfluorosulfonyl imide (LiFSI), as an electrolyte salt, is considered an ideal alternative to lithium hexafluorophosphate (LiPF6) due to its high stability, excellent high and low temperature performance, and high conductivity. However, the preparation process of LiFSI has extremely high requirements for the purity of raw materials and environmental conditions. To ensure the purity and performance of the final product, after the neutralization reaction occurs during the LiFSI preparation process, the solid salts generated by the reaction, such as potassium chloride, need to be separated. Preliminary filtration is required to remove visible suspended solids and protect subsequent precision filtration equipment. This process generally uses equipment such as plate and frame filters, basket filters, and screen filters.

[0003] However, the sealing performance of existing basket filters may leak after long-term use due to the aging or wear of the sealing ring. In addition, the pressure exerted on the filter elements by existing filters will decrease after long-term use, causing the seal to loosen, affecting the filtration effect and equipment safety. The preparation of LIFSI scenarios places higher demands on sealing performance, but existing basket filters are often limited by the design of traditional sealing structures, making it difficult to balance long-term durability and environmental adaptability, and thus failing to meet the diverse and complex industrial production needs. Utility Model Content

[0004] The purpose of this invention is to provide a purification device for LIFSI preparation to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a purification device for LIFSI preparation, comprising...

[0006] A connecting bucket, the top of which is rotatably connected to a rotating cover, and the inner wall of which is fixedly connected to a fixing ring, with a filter basket mounted on the fixing ring;

[0007] The filter basket includes a second sealing ring, the bottom of which is fitted with a fixing ring, a retaining ring fixedly connected to the top of the second sealing ring, the filter basket body fixedly connected to the bottom of the inner wall of the retaining ring, and a connecting rod fixedly connected to the top of the retaining ring.

[0008] Preferably, the inner wall of the connecting rod is threaded with an adjusting bolt, the top of the outer wall of the adjusting bolt is rotatably connected with an adjusting bracket, and the top of the adjusting bolt is in contact with the rotating cover.

[0009] Preferably, the rotating cover includes a rotating cover body, a U-shaped spring sheet is fixedly connected to the inner wall of the rotating cover body, a pressing plate is fixedly connected to the bottom of the U-shaped spring sheet, and the bottom of the pressing plate is provided with anti-slip texture, which is in contact with the top of the adjusting bolt.

[0010] Preferably, the outer wall of the rotating cover body is fixedly connected with three buckles, and the bottom of the rotating cover body is fixedly connected with a sealing ring.

[0011] Preferably, the connecting bucket includes a connecting bucket body, the retaining ring is slidably connected to the inner wall of the connecting bucket body, and three rotating blocks are rotatably connected to the top of the outer wall of the connecting bucket body, with lifting eye bolts rotatably connected to the inner walls of each of the three rotating blocks.

[0012] Preferably, the top of the connecting barrel body is provided with a sealing groove. When the rotating cover body is in contact with the connecting barrel body, the sealing ring is inserted into the sealing groove, and the three lifting eye bolts are inserted into the buckles and are in contact with the top of the rotating cover body.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention proposes a purification device for LIFSI preparation, which optimizes the design of existing LIFSI preparation purification devices. It adopts a rotating cover, a fixed ring, and a filter basket in combination. Rotating the rotating cover compresses the filter basket through a U-shaped spring and a compression plate, improving the sealing effect. By adjusting the adjusting bolt, pressure is applied to different sealing points of the sealing ring and the fixed ring, preventing leakage due to aging or wear of the sealing ring during long-term use. At the same time, it allows for adjustment of the height of the filter basket, preventing the compression force of the U-shaped spring on the filter basket from decreasing after long-term use, thus improving the long-term durability and environmental adaptability of the device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the unfolded structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the filter basket structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the side cross-section structure of this utility model.

[0020] In the diagram: 1. Connecting bucket; 11. Connecting bucket body; 12. Rotating block; 13. Lifting eye bolt; 2. Rotating cover; 21. Rotating cover body; 22. Buckle; 23. U-shaped spring; 24. Extrusion plate; 25. Anti-slip texture; 26. Sealing ring one; 3. Fixing ring; 4. Filter basket; 41. Adjusting frame; 42. Adjusting bolt; 43. Connecting rod; 44. Snap ring; 45. Sealing ring two; 46. Filter basket body. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Please see the appendix Figure 1-5 This application provides the following technical solutions.

[0023] A purification device for LIFSI preparation, comprising:

[0024] A connecting bucket 1 is rotatably connected to a rotating cover 2 at its top. A fixing ring 3 is fixedly connected to the inner wall of the connecting bucket 1, and a filter basket 4 is provided on the fixing ring 3. The filter basket 4 includes a second sealing ring 45, the bottom of which is in contact with the fixing ring 3. A retaining ring 44 is fixedly connected to the top of the second sealing ring 45. A filter basket body 46 is fixedly connected to the bottom of the inner wall of the retaining ring 44. A connecting rod 43 is fixedly connected to the top of the retaining ring 44. An adjusting bolt 42 is threadedly connected to the inner wall of the connecting rod 43. An adjusting bracket 41 is rotatably connected to the top of the outer wall of the adjusting bolt 42. The top of the adjusting bolt 42 is in contact with the rotating cover 2. The rotating cover 2 includes a rotating cover body 21. A U-shaped spring piece 23 is fixedly connected to the inner wall of the rotating cover body 21. A pressing plate 24 is fixedly connected to the bottom of the U-shaped spring piece 23. An anti-slip texture 25 is provided on the bottom of the pressing plate 24, and the anti-slip texture 25 is in contact with the top of the adjusting bolt 42.

[0025] It should be noted that when the sealing ring 45 is worn or corroded after long-term use, resulting in a gap between it and the fixed ring 3, the operator can increase the distance between the corresponding adjusting bracket 41 and the connecting rod 43 by rotating the adjusting bolt 42 near the top of the gap. At this time, the retaining ring 44 and the sealing ring 45 will undergo a small deformation, causing the gap to bulge outward. When the pressing plate 24 presses, the gap will close.

[0026] The outer wall of the rotating cover body 21 is fixedly connected with three buckles 22, and the bottom of the rotating cover body 21 is fixedly connected with a sealing ring 26. The connecting barrel 1 includes a connecting barrel body 11, and the retaining ring 44 is slidably connected to the inner wall of the connecting barrel body 11. The top of the outer wall of the connecting barrel body 11 is rotatably connected with three rotating blocks 12, and the inner walls of the three rotating blocks 12 are rotatably connected with lifting eye bolts 13. A sealing groove is opened on the top of the connecting barrel body 11. When the rotating cover body 21 and the connecting barrel body 11 are in contact, the sealing ring 26 is inserted into the sealing groove, and the three lifting eye bolts 13 are inserted into the buckles 22 and are in contact with the top of the rotating cover body 21.

[0027] It should be noted that when the device is used for a long time, causing the U-shaped spring 23 to shrink upwards, resulting in a decrease in the squeezing force on the filter basket 4 and making it impossible for the sealing ring 2 45 to fit tightly against the fixing ring 3, the operator can rotate the four adjusting bolts 42 to increase the gap between the entire adjusting frame 41 and the connecting rod 43, place the filter basket 4 into the connecting bucket 1, insert the filter basket body 46 into the fixing ring 3, rotate and close the rotating cover body 21, and then rotate the rotating block 12 to make the lifting eye bolt 13 engage with the buckle 22. Rotate the lifting eye bolt 13 to fit against the top of the buckle 22, so that the sealing ring 26 is tightly engaged in the sealing groove. At the same time, the U-shaped spring 23 pushes the squeezing plate 24 to squeeze the adjusting bolt 42. The anti-slip texture 25 prevents the adjusting bolt 42 from rotating. The adjusting bolt 42 squeezes the connecting rod 43 to push the retaining ring 44 to squeeze the sealing ring 2 45, so that the sealing ring 2 45 fits tightly against the fixing ring 3. At this time, the sealing of the device is completed.

[0028] During use, the operator injects the LIFSI turbid liquid to be purified into the connecting tank body 11 through the device injection pipe, entering the filter basket body 46. Larger solid impurities, such as salts generated during the reaction and undissolved raw materials, remain in the filter basket body 46. The filtered LIFSI liquid is discharged from the device outlet. After filtration is complete, the operator can open the drain outlet at the bottom of the device to drain the residual filtrate. At this time, the operator can rotate the three lifting eye bolts 13 to make the lifting eye bolts 13 and rotating block 12 move in a threaded motion, causing the lifting eye bolts 13 to disengage from the top surface of the buckle 22. Rotating rotating block 12 will disengage the lifting eye bolts 13 from the inner wall of buckle 22. At this time, the rotating cover body 21 can be rotated open, and the adjusting bracket 41 can be pulled to remove the entire filter basket 4, cleaning the larger solid impurities remaining inside the filter basket body 46. When the sealing ring 2 45 is worn or corroded due to long-term use, resulting in a gap between it and the fixed ring 3, the operator can rotate the adjusting bolt 42 near the top of the gap to make the corresponding adjusting bracket 41 and the connecting... As the distance between the connecting rods 43 increases, the retaining ring 44 and the second sealing ring 45 undergo slight deformation, causing the gap to bulge outwards. When the extrusion plate 24 presses, the gap closes. However, with prolonged use, the U-shaped spring 23 contracts upwards, reducing the pressure on the filter basket 4. This prevents the second sealing ring 45 from adhering to the fixing ring 3. In this case, the operator can rotate the four adjusting bolts 42 to increase the gap between the entire adjusting frame 41 and the connecting rods 43, placing the filter basket 4 into the connecting bucket 1. The filter basket body 46 is then inserted into the fixing ring 3. The operator rotates and closes the rotating cover body 21, then rotates the rotating block 12 to make the lifting eye bolt 13 engage with the buckle 22. The rotating lifting eye bolt 13 is then engaged with the top of the buckle 22, so that the sealing ring 26 is tightly engaged in the sealing groove. At the same time, the U-shaped spring 23 pushes the extrusion plate 24 to compress the adjusting bolt 42. The anti-slip texture 25 prevents the adjusting bolt 42 from rotating. The adjusting bolt 42 compresses the connecting rod 43, pushes the retaining ring 44 to compress the sealing ring 45, so that the sealing ring 45 is tightly engaged with the fixing ring 3. At this time, the sealing of the device is completed.

[0029] Although 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 embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A purification device for LIFSI preparation, characterized in that: include A connecting bucket (1) is rotatably connected to the top of the connecting bucket (1), and a fixing ring (3) is fixedly connected to the inner wall of the connecting bucket (1). A filter basket (4) is provided on the fixing ring (3). The filter basket (4) includes a second sealing ring (45), the bottom of which is in contact with the fixing ring (3), a retaining ring (44) is fixedly connected to the top of the second sealing ring (45), the filter basket body (46) is fixedly connected to the bottom of the inner wall of the retaining ring (44), and a connecting rod (43) is fixedly connected to the top of the retaining ring (44).

2. The purification device for LIFSI preparation according to claim 1, characterized in that: The inner wall of the connecting rod (43) is threaded with an adjusting bolt (42), and the top of the outer wall of the adjusting bolt (42) is rotatably connected with an adjusting bracket (41). The top of the adjusting bolt (42) is in contact with the rotating cover (2).

3. The purification device for LIFSI preparation according to claim 2, characterized in that: The rotating cover (2) includes a rotating cover body (21), and a U-shaped spring piece (23) is fixedly connected to the inner wall of the rotating cover body (21). A pressing plate (24) is fixedly connected to the bottom of the U-shaped spring piece (23). The bottom of the pressing plate (24) is provided with anti-slip texture (25), and the anti-slip texture (25) is in contact with the top of the adjusting bolt (42).

4. The purification device for LIFSI preparation according to claim 3, characterized in that: The outer wall of the rotating cover body (21) is fixedly connected with three buckles (22), and the bottom of the rotating cover body (21) is fixedly connected with a sealing ring (26).

5. The purification device for LIFSI preparation according to claim 4, characterized in that: The connecting barrel (1) includes a connecting barrel body (11), the retaining ring (44) is slidably connected to the inner wall of the connecting barrel body (11), and three rotating blocks (12) are rotatably connected to the top of the outer wall of the connecting barrel body (11), and the inner walls of the three rotating blocks (12) are rotatably connected to lifting eye bolts (13).

6. The purification device for LIFSI preparation according to claim 5, characterized in that: The top of the connecting barrel body (11) is provided with a sealing groove. When the rotating cover body (21) is in contact with the connecting barrel body (11), the sealing ring (26) is inserted into the sealing groove, and the three lifting eye bolts (13) are inserted into the buckle (22) and are in contact with the top of the rotating cover body (21).

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