Fluoroethylene carbonate purification device

Abstract

The utility model relates to the technical field of fluoroethylene carbonate purification, and discloses a fluoroethylene carbonate purification device which comprises a crystallization chamber, the top of the crystallization chamber is fixedly connected with a filtering connecting pipe, and the top of the filtering connecting pipe is fixedly connected with a mixing box; according to the raw material mixing device, firstly, two raw materials to be mixed are placed in the two raw material barrels, when the raw materials need to be mixed, the rotating frame is rotated until the square clamping sleeves wrap the square rotary knobs, the connecting rods are rotated to enable the square clamping sleeves at the two ends to coaxially rotate, and the square clamping sleeves and the square rotary knobs are combined, so that the raw materials are mixed; according to the present invention, the raw liquid in the two raw material barrels can be synchronously added, the adding rate can be synchronously controlled, the stirring motor drives the rotating rod to synchronously rotate during the later-stage crystallization process, the crystallization rate can be accelerated through the two stirring rods, and the crystals attached to the inner wall of the crystallization chamber can be scraped off through the two spiral scrapers so as to improve the crystallization efficiency; and manual scraping is avoided, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of purification of fluoroethylene carbonate, in particular to a purification device for fluoroethylene carbonate. Background Art

[0002] Fluoroethylene carbonate is the main electrolyte additive for lithium-ion batteries. It has better performance in forming SE I film, forms a precise structural layer without increasing impedance, can prevent further decomposition of the electrolyte, and has a flame retardant effect. The battery cycle life is improved while the safety performance is significantly increased.

[0003] In the disclosure of a purification device for fluoroethylene carbonate with the publication number CN216023593U, the device comprises a liquid mixing box, a distillation box, a feed pipe and a filtering mechanism, wherein the filtering mechanism comprises a filter screen, which is slidably connected to the inner side of the feed pipe and is used to filter the liquid flowing in the feed pipe; a movable groove, which is arranged on the inner side of the feed pipe; a fixed block, which is fixedly connected to the outer side of the filter screen and is slidably connected to the inner side of the movable groove and is used to strengthen the connection force between the feed pipe and the filter screen; through the provided filtering mechanism, when adding materials to the liquid mixing box, the materials can be filtered synchronously while passing through the feed pipe, which can further ensure the purification effect of the device and reduce the impurity mixing rate, and the installation and disassembly of the filter screen are simpler, so that the user can replace or maintain it at any time.

[0004] However, the above-mentioned fluoroethylene carbonate purification device is difficult to add two stock solutions at the same time when mixing them. It is often necessary to add the first one to an appropriate amount and then add the second one. When the two liquids are not mixed equally, the reaction is too violent and there is also insufficient mixing. Crystallization is also involved in the purification process, but it is easy to adhere to the inner wall of the crystallizer after crystallization, so that it needs to be scraped off manually when it is exported. Therefore, it is necessary to provide a new fluoroethylene carbonate purification device to solve the above technical problems. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the shortcomings of the prior art, the utility model provides a purification device for fluoroethylene carbonate, which has the advantages of easy control of addition and mixing reaction, quick scraping, etc., and solves the problem that it is difficult to add two stock solutions at the same time when mixing them, and that after crystallization, the two stock solutions are easily adhered to the inner wall of the crystallizer, so that manpower is required to scrape them off when they are exported.

[0007] (II) Technical solution

[0008] In order to achieve the above-mentioned purpose of facilitating the control of adding mixed reactions and quickly scraping off, the utility model provides the following technical solutions: a purification device for fluoroethylene carbonate, comprising: a crystallization chamber, a filter connecting pipe is fixedly connected to the top of the crystallization chamber, and a mixing box is fixedly connected to the top of the filter connecting pipe; a convenient component, the convenient component comprises two raw material barrels, both of which are fixedly connected to the top of the mixing box, and the outsides of the two raw material barrels are rotatably connected to square knobs, the top of the mixing box is rotatably connected to a rotating frame, and the inside of the rotating frame is rotatably connected to a connecting rod, and both ends of the connecting rod are fixedly connected to square ferrules, and a valve is arranged inside the raw material barrel, and the square knob is fixedly connected to the valve. The square knob can control the opening and closing of the valve by turning. First, place the two stock solutions to be mixed inside the two raw material barrels. When mixing is required, turn the rotating frame until the square ferrule wraps the square knob. Turn the connecting rod to make the square ferrules at both ends rotate coaxially. The square ferrule rotates while driving the square knob to rotate. The rotation of the square knob opens the valve inside the raw material barrel, realizing the synchronous addition of the stock solutions inside the two raw material barrels and the synchronous control of the addition rate. In the later crystallization process, the stirring motor drives the rotating rod to rotate synchronously. The crystallization rate can be accelerated by the two stirring rods. The crystals attached to the inner wall of the crystallization chamber can be scraped off by two spiral scrapers to avoid manual scraping and improve work efficiency.

[0009] As a preferred technical solution of the utility model, the two raw material barrels are arranged opposite to each other, and the rotating frame is located at the center of the two raw material barrels. The rotating frame can be rotated to make the square sleeve and the square knob fit together and disengage from each other, thereby realizing synchronous control of the rate of adding the raw liquid.

[0010] As a preferred technical solution of the utility model, the outer sleeve of the connecting rod is provided with a rubber sleeve, and the outer side of the rubber sleeve is provided with irregular grooves, and the irregular grooves can increase friction and prevent slipping, making it easier for users to rotate the connecting rod.

[0011] As a preferred technical solution of the utility model, a stirring motor is fixedly connected to the bottom of the crystallization chamber, one end of the output shaft of the stirring motor is fixedly connected to a rotating rod, and two stirring rods are fixedly connected to the outside of the rotating rod. The two stirring rods can stir the raw liquid to be crystallized inside the crystallization chamber, so as to accelerate the crystallization rate.

[0012] As a preferred technical solution of the utility model, two groups of fixed rods are fixedly connected to the outside of the rotating rod, and the ends of the two groups of fixed rods are fixedly connected to spiral scrapers. The outside of the stirring motor is provided with a protective frame, and the spiral scraper can scrape off the crystals on the inner wall of the crystallization chamber to avoid the crystals adhering to the inner wall of the crystallization chamber and requiring manual scraping.

[0013] As a preferred technical solution of the utility model, a cover plate is rotatably connected to the outside of the crystallization chamber, a handle is fixedly connected to the outside of the cover plate, and a sealing ring is provided at the connection between the cover plate and the crystallization chamber.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a purification device for fluoroethylene carbonate, which has the following beneficial effects:

[0016] 1. The purification device of fluoroethylene carbonate first places two stock solutions to be mixed in two raw material barrels. When mixing is required, the rotating frame is rotated until the square ferrule wraps the square knob. The connecting rod is rotated to make the square ferrules at both ends rotate coaxially. The square ferrule rotates while driving the square knob to rotate. The rotation of the square knob opens the valve inside the raw material barrel, thereby realizing the synchronous addition of the stock solutions inside the two raw material barrels and the synchronous control of the addition rate.

[0017] 2. In the purification device for fluoroethylene carbonate, during the later crystallization process, the stirring motor drives the rotating rod to rotate synchronously, the crystallization rate can be accelerated by the two stirring rods, and the crystals attached to the inner wall of the crystallization chamber can be scraped off by the two spiral scrapers, avoiding manual scraping and improving the working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of a fluoroethylene carbonate purification device of the utility model;

[0019] Figure 2 This is a schematic diagram of the top view of the connecting rod structure of the utility model;

[0020] Figure 3 The utility model is a schematic diagram of the internal structure of a fluoroethylene carbonate purification device.

[0021] Figure 4 This is a schematic diagram of the external structure of the spiral scraper of the utility model.

[0022] In the figure: 1. Crystallization chamber; 2. Filter connecting pipe; 3. Mixing box; 4. Raw material barrel; 5. Square knob; 6. Rotating frame; 7. Connecting rod; 8. Square ferrule; 9. Rubber sleeve; 10. Protective frame; 11. Stirring motor; 12. Rotating rod; 13. Stirring rod; 14. Fixed rod; 15. Spiral scraper; 16. Cover plate. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0024] Example 1

[0025] Reference Figure 1-3 , which is the first embodiment of the utility model, provides a purification device for fluoroethylene carbonate, including: a crystallization chamber 1, the top of the crystallization chamber 1 is fixedly connected with a filter connecting pipe 2, the top of the filter connecting pipe 2 is fixedly connected with a mixing box 3; a convenient component, the convenient component includes two raw material barrels 4, the two raw material barrels 4 are fixedly connected to the top of the mixing box 3, the outsides of the two raw material barrels 4 are rotatably connected with a square knob 5, the top of the mixing box 3 is rotatably connected with a rotating frame 6, the inside of the rotating frame 6 is rotatably connected with a connecting rod 7, both ends of the connecting rod 7 are fixedly connected with a square ferrule 8, a valve is arranged inside the raw material barrel 4, the square knob 5 is fixedly connected to the valve, and the square knob 5 can control the opening and closing of the valve by rotation. First, place the two stock solutions to be mixed inside the two raw material barrels 4. When mixing is required, rotate the rotating frame 6 until the square sleeve 8 wraps the square knob 5, and rotate the connecting rod 7 to make the square sleeves 8 at both ends rotate coaxially. The square sleeve 8 rotates while driving the square knob 5 to rotate. The rotation of the square knob 5 opens the valve inside the raw material barrel 4, thereby realizing the synchronous addition of the stock solutions inside the two raw material barrels 4 and the synchronous control of the addition rate. In the later crystallization process, the stirring motor 11 drives the rotating rod 12 to rotate synchronously, and the crystallization rate can be accelerated by the two stirring rods 13. The crystals attached to the inner wall of the crystallization chamber 1 can be scraped off by the two spiral scrapers 15 to avoid manual scraping and improve the working efficiency.

[0026] The two raw material barrels 4 are arranged opposite to each other, and the rotating frame 6 is located at the center of the two raw material barrels 4. The rotating frame 6 can rotate to make the square sleeve 8 and the square knob 5 fit together and disengage from each other, thereby realizing synchronous regulation of the rate of adding the raw liquid.

[0027] The outer part of the connecting rod 7 is covered with a rubber sleeve 9 , and the outer part of the rubber sleeve 9 is provided with irregular edges and grooves. The irregular edges and grooves can increase the friction and prevent slipping, so that the user can rotate the connecting rod 7 conveniently.

[0028] A stirring motor 11 is fixedly connected to the bottom of the crystallization chamber 1, and one end of the output shaft of the stirring motor 11 is fixedly connected to a rotating rod 12. The outside of the rotating rod 12 is fixedly connected to two stirring rods 13. The two stirring rods 13 can stir the raw liquid to be crystallized inside the crystallization chamber 1, so as to accelerate the crystallization rate.

[0029] The outside of the crystallization chamber 1 is rotatably connected to a cover plate 16 , the outside of the cover plate 16 is fixedly connected to a handle, and a sealing ring is provided at the connection between the cover plate 16 and the crystallization chamber 1 .

[0030] During use, first place the two stock solutions to be mixed inside the two raw material barrels 4. When mixing is required, rotate the rotating frame 6 until the square ferrule 8 wraps the square knob 5, and rotate the connecting rod 7 to make the square ferrules 8 at both ends rotate coaxially. The square ferrule 8 rotates while driving the square knob 5 to rotate. The square knob is rotated 5 times to open the valve inside the raw material barrel 4, thereby realizing the simultaneous addition of the stock solutions inside the two raw material barrels 4 and the simultaneous control of the addition rate.

[0031] Example 2

[0032] Reference Figure 1-4 , which is the second embodiment of the utility model. This embodiment is different from the first embodiment in that: two groups of fixed rods 14 are fixedly connected to the outside of the rotating rod 12, and the ends of the two groups of fixed rods 14 are fixedly connected to spiral scrapers 15. The outside of the stirring motor 11 is provided with a protective frame 10. The spiral scraper 15 can scrape off the crystals on the inner wall of the crystallization chamber 1 to avoid the crystals adhering to the inner wall of the crystallization chamber 1 and requiring manual scraping.

[0033] During use, in the later crystallization process, the stirring motor 11 drives the rotating rod 12 to rotate synchronously, the two stirring rods 13 can accelerate the crystallization rate, and the two spiral scrapers 15 can scrape off the crystals attached to the inner wall of the crystallization chamber 1, avoiding manual scraping and improving work efficiency.

[0034] The remaining structures are the same as those of Example 1.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A purification device for fluoroethylene carbonate, characterized in that: include: A crystallization chamber (1), wherein the top of the crystallization chamber (1) is fixedly connected to a filter connecting pipe (2), and the top of the filter connecting pipe (2) is fixedly connected to a mixing box (3); A convenient component, the convenient component comprising two raw material barrels (4), the two raw material barrels (4) are fixedly connected to the top of a mixing box (3), the outside of the two raw material barrels (4) are rotatably connected to a square knob (5), the top of the mixing box (3) is rotatably connected to a rotating frame (6), the inside of the rotating frame (6) is rotatably connected to a connecting rod (7), and both ends of the connecting rod (7) are fixedly connected to square ferrules (8).

2. A purification device for fluoroethylene carbonate according to claim 1, characterized in that: The two raw material barrels (4) are arranged opposite to each other, and the rotating frame (6) is located at the center of the two raw material barrels (4).

3. A purification device for fluoroethylene carbonate according to claim 1, characterized in that: The connecting rod (7) is externally sleeved with a rubber sleeve (9), and the rubber sleeve (9) is externally provided with irregular ridge grooves.

4. A purification device for fluoroethylene carbonate according to claim 1, characterized in that: The bottom of the crystallization chamber (1) is fixedly connected to a stirring motor (11), one end of the output shaft of the stirring motor (11) is fixedly connected to a rotating rod (12), and the outside of the rotating rod (12) is fixedly connected to two stirring rods (13).

5. A purification device for fluoroethylene carbonate according to claim 4, characterized in that: The rotating rod (12) is fixedly connected to two groups of fixed rods (14) on the outside, and the ends of the two groups of fixed rods (14) are fixedly connected to spiral scrapers (15). The stirring motor (11) is externally sleeved with a protective frame (10).

6. A purification device for fluoroethylene carbonate according to claim 1, characterized in that: The outside of the crystallization chamber (1) is rotatably connected to a cover plate (16), and the outside of the cover plate (16) is fixedly connected to a handle.

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