A positive electrode stirring tank device is cleaned using deionized water

Abstract

This utility model relates to the technical field of mixing tank devices, specifically a device for cleaning a positive electrode mixing tank using deionized water. It includes an upper mixing tank and a lower mixing tank. A support is provided on the outer side of the lower mixing tank, and a cylinder is provided on the side of the lower mixing tank. The output shaft of the cylinder is fixedly connected to the bottom surface of the upper mixing tank. It also includes a control component to save on cleaning costs and reduce harm to the operator during cleaning. This utility model uses a three-way pipe to allow deionized water to flow into a distribution pipe, which sprays the water from a spray head at the top of the upper mixing tank, achieving the purpose of cleaning the dead corners inside the upper mixing tank. A vacuum tube is provided on the upper mixing tank to create a vacuum negative pressure inside. A small amount of NMP solution is then used for cleaning, saving the cost of directly using NMP solution. Simultaneously, a vacuum negative pressure is created inside both the upper and lower mixing tanks, preventing NMP solution from spraying out and wasting resources and increasing costs.

Description

Technical Field

[0001] This utility model relates to the technical field of mixing tank devices, specifically a device for cleaning a positive electrode mixing tank using deionized water. Background Technology

[0002] With increasing energy scarcity and the growing impact of the greenhouse effect, new energy materials have emerged, among which lithium-ion batteries have developed rapidly. They can serve not only as energy storage materials but also as power sources for automobiles. In the lithium-ion battery production process, the slurry mixing process is crucial. Because the positive electrode slurry uses polyvinylidene fluoride (PVDF) as a binder and NMP as a solvent, and because NMP is highly soluble in water, reducing the solubility of PVDF, the positive electrode slurry easily absorbs water and becomes jelly-like. Therefore, strict environmental control requirements (humidity <1%) are necessary in the positive electrode mixing workshop. Furthermore, cleaning the positive electrode mixing tank after slurry mixing requires a large amount of NMP solution.

[0003] However, NMP solution is expensive, resulting in high cleaning costs, and it is also harmful to the body. Long-term exposure may cause damage to the skin, mucous membranes, respiratory tract, and eyes. Meanwhile, deionized water is cheaper than NMP solution and can be used in conjunction with NMP solution for cleaning. Therefore, we propose a method for cleaning the positive electrode stirring tank using deionized water. Utility Model Content

[0004] The purpose of this invention is to provide a device for cleaning the positive electrode stirring tank using deionized water. This device solves the problem that using NMP solution to clean the stirring tank is expensive and also causes significant harm to the operator.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A device for cleaning a positive electrode mixing tank using deionized water includes an upper mixing tank and a lower mixing tank. A support is provided on the outer side of the lower mixing tank, and a cylinder is provided on the side of the lower mixing tank. The output shaft of the cylinder is connected to the bottom surface of the upper mixing tank. The device also includes a control component to save on cleaning costs and reduce harm to the operator during cleaning. The control component includes a spiral paste, which is disposed on the inner top of the upper mixing tank. A dispersion disc is also provided inside the upper mixing tank. A driving device, composed of a servo motor, is provided on the top of both the spiral paste and the dispersion disc, and is located inside the upper mixing tank. A buckle is provided on the outer side of the upper mixing tank, and a diverter pipe passes through and is fixedly connected to the inner side of the buckle. A spray head passes through and is fixedly connected to the surface of the diverter pipe, and the spray head passes through and is fixedly connected to the upper mixing tank.

[0007] Preferably, a three-way pipe is connected through and fixedly connected to the surface of the diversion pipe, a vacuum pipe is connected through and fixedly connected to the inner side of the upper stirring tank, the inlet end of the three-way pipe is connected to a deionized water source and an NMP solution source respectively, and a solenoid valve is provided at the outlet end of the three-way pipe.

[0008] Preferably, the inner side of the lower mixing tank is provided with an electric heating layer and a cooling water layer, and the bottom surface of the lower mixing tank is fixedly connected with a bottom plate.

[0009] Preferably, the side of the base plate is fixedly connected to a connecting buckle by bolts, and the connecting buckle is fixedly connected to the lower mixing tank by bolts.

[0010] Preferably, the surface of the base plate is provided with a discharge port that extends through and is fixedly connected to the discharge port, and the bottom of the discharge port is provided with a cover.

[0011] Preferably, the amount of the twisted dough paste is two sets, and the two sets of twisted dough paste are symmetrically arranged with the center line of the upper mixing tank as the axis, and the dispersing plate and the twisted dough paste are arranged at intervals.

[0012] Preferably, the number of dispersion discs is two sets, and the two sets of dispersion discs are symmetrically arranged with the center line of the upper mixing tank as the axis.

[0013] By employing the above technical solution, this utility model provides a device for cleaning the positive electrode stirring tank using deionized water. It possesses at least the following beneficial effects:

[0014] 1. This utility model uses a three-way pipe to allow deionized water to flow into a distribution pipe and spray it from the top spray head of the upper mixing tank, thereby cleaning the dead corners inside the upper mixing tank. A vacuum tube is provided on the upper mixing tank to create a vacuum negative pressure inside the mixing tank. Then, a small amount of NMP solution is used for cleaning, which saves the cost of directly using NMP solution for cleaning. At the same time, a vacuum negative pressure is formed inside the upper and lower mixing tanks, avoiding the waste of resources and increased costs caused by NMP solution spraying out.

[0015] 2. This utility model saves costs by first cleaning with deionized water and then cleaning with a small amount of NMP solution, while also reducing the harm of NMP solution to the operator's body and lowering the possibility of damage to the operator's skin, mucous membranes, respiratory tract, eyes, etc. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a bottom view of the upper mixing tank structure of this utility model;

[0019] Figure 3 This is a cross-sectional view of the lower mixing tank of this utility model;

[0020] Figure 4 This is a schematic diagram of the unfolded and enlarged structure of the base plate of this utility model.

[0021] In the diagram: 1. Upper mixing tank; 2. Control components; 3. Lower mixing tank; 4. Cylinder; 5. Support; 21. Twisted dough; 22. Dispersing disc; 23. Buckle; 24. Diverter pipe; 25. Spray head; 26. T-connector; 27. Solenoid valve; 28. Vacuum tube; 29. ​​Electric heating layer; 210. Cooling water layer; 211. Base plate; 212. Connecting buckle; 213. Discharge port. Detailed Implementation

[0022] 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.

[0023] A device for cleaning the positive electrode stirring tank with deionized water, such as Figure 1 - Figure 4As shown, the system comprises two core components: an upper mixing tank 1 and a lower mixing tank 3. A sturdy support 5 is designed and installed on the outside of the lower mixing tank 3 to enhance the overall structural stability. Simultaneously, a high-efficiency cylinder 4 is equipped on the side of the lower mixing tank 3. The output shaft of this cylinder 4 is connected to the bottom surface of the upper mixing tank 1, ensuring smooth and efficient mixing. Furthermore, the equipment integrates an advanced control component 2. The main function of this control component 2 is to significantly reduce the cost of cleaning the mixing tanks and greatly reduce the potential harm to the operator's health during cleaning operations, thus improving operational safety. Specifically, regarding the control... The component 2 comprises a part called a "twisted pulp" 21, which is carefully positioned on the inner top of the upper mixing tank 1 to maximize its mixing effect. Inside the upper mixing tank 1, a dispersion disc 22 is specially designed to further optimize the mixing effect. Notably, both the top of the twisted pulp 21 and the dispersion disc 22 are equipped with high-efficiency drive devices, mainly composed of servo motors, which are also located inside the upper mixing tank 1 to ensure direct and efficient power transmission. On the outer side of the upper mixing tank 1, a buckle 23 is designed, with its inner side passing through and securing the components. A diversion pipe 24 is provided, and a spray head 25 is fixedly connected to and penetrates the surface of the diversion pipe 24. The spray head 25 not only passes through the upper mixing tank 1 but is also firmly fixedly connected to the upper mixing tank 1. After the NMP solution is discharged, the operator can open the sealed upper mixing tank 1 and use alcohol and a lint-free cloth to thoroughly wipe the tank wall, the spiral paste 21, the dispersion disc 22, and the top of the upper mixing tank 1, thereby completing the efficient cleaning of the positive electrode mixing tank. A three-way pipe 26 is fixedly connected to and penetrates the surface of the diversion pipe 24, and a solenoid valve 27 is also installed through and installed on the three-way pipe 26 to control the flow direction of the fluid in the upper mixing tank 1. Inside, a vacuum tube 28 is connected and fixedly connected to the mixing tank. This tube is used to add deionized water into the mixing tank during the cleaning process. After the tank is closed, the spiral slurry 21 and the dispersion disc 22 are opened to clean the mixing tank. The deionized water is then introduced into the distribution pipe 24 through the three-way pipe 26 and sprayed from the spray head 25 at the top of the upper mixing tank 1 to ensure thorough cleaning of the dead corners inside the upper mixing tank 1. The vacuum tube 28 on the upper mixing tank 1 is used to create a vacuum negative pressure inside the mixing tank, further improving the cleaning effect. Inside the lower mixing tank 3, an electric heating layer 29 and a cooling water layer 210 are specially set to cope with the cleaning process with different temperature requirements. A bottom plate 211 is fixedly connected to the bottom surface of the lower mixing tank 3. After repeated stirring and dispersion cleaning, the dirty deionized water can be smoothly discharged through the discharge port 213 on the surface of the bottom plate 211. In the sealed state, the lower mixing tank 3 can turn on the resistance wire heating system and heat at a specified temperature to evaporate and vaporize the deionized water.When the resistance wire heating system raises the temperature inside the tank to the threshold for water evaporation, the controller automatically activates the vacuum pump to extract water vapor through the vacuum tube 28. Once the resistance wire heating system reaches the set temperature, the vacuum system starts, using negative pressure to completely remove the water vapor. A connecting buckle 212 is bolted to the side of the base plate 211, and the connecting buckle 212 is then bolted to the lower mixing tank 3, ensuring structural stability. A discharge port 213 is connected through and fixed to the surface of the base plate 211. A cap is also provided at the bottom of the discharge port 213 for easy control and sealing of the discharge process. Notably, there are two sets of spiral paste 21, symmetrically arranged with the center line of the upper mixing tank 1 as the axis. The dispersing discs are spaced apart from the spiral paste to ensure uniform and efficient mixing. Similarly, there are also two sets of dispersing discs 22, symmetrically arranged with the center line of the upper mixing tank 1 as the axis, further optimizing the mixing effect.

[0024] This utility model discloses a device for cleaning a positive electrode mixing tank using deionized water. In use, after the positive electrode slurry is prepared, deionized water is added to the mixing tank. The tank body is closed, and the spiral slurry 21 and dispersion disc 22 are opened for cleaning. Deionized water flows into a distribution pipe 24 through a three-way pipe 26 and is sprayed from a spray head 25 at the top of the upper mixing tank 1 to clean the dead corners inside. A vacuum pipe 28 is provided on the upper mixing tank 1 to create a vacuum negative pressure inside. The lower mixing tank 3 forms a closed, sealed mixing state with the upper mixing tank 1. The lower mixing tank 3 consists of an electric heating layer 29 and a cooling water layer 210. The electric heating layer 29 is composed of resistance wires evenly distributed around the lower mixing tank 3, close to the inner wall. The cooling water layer 210 is close to the outer wall. A discharge port 213 is located at the bottom of the lower mixing tank 3 for discharging the slurry and draining the solution after cleaning the mixing tank.

[0025] After repeated stirring, dispersion, and cleaning, the contaminated deionized water is discharged from outlet 213. With the lower mixing tank 3 sealed, the resistance wire heating system is activated and a specified temperature is set to heat the lower mixing tank 3, causing the deionized water to evaporate. Once the resistance wire heating system reaches the set temperature, the vacuum system is activated to draw a vacuum and remove the water vapor. After vacuuming, the mixing tank can be cooled through a cooling water jacket. After cooling, the solenoid valve 27 controls the three-way pipe 26 to allow NMP solution to flow into the distribution pipe 24 and be sprayed from the spray head 25, wetting the upper mixing tank 1. After wetting, the NMP solution is discharged from outlet 213 of the mixing tank. After the NMP solution is discharged, the operator opens the sealed upper mixing tank 1 and uses alcohol and a lint-free cloth to wipe the walls of the lower mixing tank 3, the spiral paste 21, the dispersion disc 22, and the top of the upper mixing tank 1, completing the cleaning of the positive electrode mixing tank.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0027] 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 device for cleaning a positive electrode stirring tank using deionized water, comprising an upper stirring tank (1) and a lower stirring tank (3), characterized in that: A bracket (5) is provided on the outside of the lower mixing tank (3), and a cylinder (4) is provided on the side of the lower mixing tank (3). The output shaft of the cylinder (4) is connected to the bottom surface of the upper mixing tank (1) in a transmission connection. It also includes a control component (2) to save on the cleaning cost of the mixing tank and reduce the harm to the operator's body during cleaning; The control component (2) includes a twisted dough paste (21), which is located on the top inner side of the upper mixing tank (1). The upper mixing tank (1) is also equipped with a dispersion plate (22). Both the top of the twisted dough paste (21) and the dispersion plate (22) are equipped with driving devices, which are located inside the upper mixing tank (1). A diversion pipe (24) is provided on one side of the mixing tank (1). A spray head (25) is connected through and fixedly connected to the surface of the diversion pipe (24). The spray head (25) passes through the upper mixing tank (1) and is fixedly connected to the upper mixing tank (1).

2. The apparatus for cleaning the positive electrode stirring tank with deionized water according to claim 1, characterized in that: A three-way pipe (26) is connected through and fixed to the surface of the diversion pipe (24), and a vacuum pipe (28) is connected through and fixed to the inner side of the upper stirring tank (1). The inlet end of the three-way pipe (26) is connected to the deionized water source and the NMP solution source respectively, and a solenoid valve (27) is provided at the outlet end of the three-way pipe (26).

3. The apparatus for cleaning the positive electrode stirring tank with deionized water according to claim 1, characterized in that: The lower mixing tank (3) is provided with an electric heating layer (29) and a cooling water layer (210) on its inner side, and a bottom plate (211) is fixedly connected to the bottom surface of the lower mixing tank (3).

4. The apparatus for cleaning the positive electrode stirring tank with deionized water according to claim 3, characterized in that: The side of the base plate (211) is fixedly connected to a connecting buckle (212) by bolts, and the connecting buckle (212) is fixedly connected to the lower mixing tank (3) by bolts.

5. The apparatus for cleaning the positive electrode stirring tank with deionized water according to claim 3, characterized in that: The surface of the base plate (211) is connected to a discharge port (213) that is fixedly attached to it, and the bottom of the discharge port (213) is provided with a cover.

6. The apparatus for cleaning the positive electrode stirring tank with deionized water according to claim 1, characterized in that: The number of the twisted dough paste (21) is at least two sets, and the two sets of twisted dough paste (21) are respectively arranged symmetrically with the center line of the upper mixing tank (1) as the axis.

7. The apparatus for cleaning the positive electrode stirring tank with deionized water according to claim 1, characterized in that: The number of dispersion discs (22) is at least two sets, and the two sets of dispersion discs (22) are respectively arranged symmetrically with the center line of the upper mixing tank (1) as the axis.

8. The apparatus for cleaning the positive electrode stirring tank with deionized water according to claim 7, characterized in that: The dispersing disc (22) and the hemp pulp (21) are arranged at intervals.

9. The apparatus for cleaning the positive electrode stirring tank with deionized water according to claim 1, characterized in that: The outer side of the upper mixing tank (1) is provided with a buckle (23), and the inner side of the buckle (23) passes through the diversion pipe (24) and is fixedly connected to it.

10. The apparatus for cleaning the positive electrode stirring tank with deionized water according to claim 1, characterized in that: The drive unit consists of a servo motor.

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