A high-precision filtration device for composite current collector coating liquid

Abstract

This utility model relates to the field of coating technology and discloses a high-precision filtration device for composite current collector coating liquid, comprising: a storage tank, a filter structure, a purified liquid tank, and an output structure. The storage tank is used to hold a first coating liquid; the filter structure is connected to the storage tank and is used to filter the first coating liquid to form a second coating liquid; the purified liquid tank is connected to the filter structure and is used to store the second coating liquid; the output structure is connected to the purified liquid tank and is used to output the second coating liquid in the purified liquid tank to the coating device. This utility model achieves continuous and stable operation of filtration and coating. It provides time for operators to adjust the filtration efficiency of the filter structure, allowing the coating device to continue operating for a period of time, reducing overall downtime. It suffers from lower filtration resistance, avoiding blockages that significantly affect flow rate and head, and allows for normal liquid supply for extended periods.

Description

Technical Field

[0001] This utility model relates to the field of coating technology, specifically to a high-precision filtration device for composite current collector coating liquid. Background Technology

[0002] Although ultrasonic vibration and mechanical stirring are used after the composite current collector base film coating liquid is stored and prepared, the problem of agglomeration and clustering of nanomaterials still occurs. The coating thickness is only about 50-100nm, and the agglomeration will form patch defects at the coating site. Therefore, the existing technology will install a filter device at the output end of the storage tank.

[0003] However, the liquid supply rate needs to be stable and steady. The pumping pressure is low. When using ultra-precision filters, the small pore size and high resistance make it impossible to supply and filter normally. Even a slight blockage in the ultra-precision filter has a significant impact on the flow rate and head, making it impossible to supply liquid normally. Utility Model Content

[0004] In view of this, this utility model provides a high-precision filtration device for composite current collector coating liquid to solve the problems of needing a stable and consistent liquid supply speed, low pumping pressure, inability to properly supply and filter liquid using ultra-precision filters due to small pore size and high resistance, and the significant impact of even slight clogging on flow rate and head of ultra-precision filters, leading to inability to supply liquid normally.

[0005] In a first aspect, this utility model provides a high-precision filtration device for composite current collector coating liquid, comprising:

[0006] A storage tank for holding the first coating liquid;

[0007] A filtration structure is connected to the liquid storage tank and is used to filter the first coating liquid to form a second coating liquid.

[0008] A clean liquid tank, which is connected to the filter structure, is used to store the second coating liquid;

[0009] An output structure is connected to the clean liquid tank and is used to output the second coating liquid in the clean liquid tank to the coating device.

[0010] Beneficial Effects: High-purity coating solution is a crucial prerequisite for obtaining uniform, defect-free, high-performance coatings. Impurities can lead to coating defects or even product scrap. The above setup utilizes a high-precision filtration structure specifically designed to convert the unfiltered first coating solution into a high-purity second coating solution. This directly removes particulate matter, gels, bubbles, or other impurities from the coating solution, ensuring its high purity and impurity-free status. A separate clean liquid tank serves as a buffer storage for the filtered second coating solution, enabling continuous and stable operation of filtration and coating processes. When the coating unit operates at high speed and requires a large amount of liquid, even if the filtration speed cannot keep up, the clean liquid tank's capacity can meet short-term needs, providing time for operators to adjust the filtration efficiency. The coating unit can continue operating for a period, reducing overall downtime.

[0011] The output structure draws liquid from the clean liquid tank to supply the coating device. The clean liquid tank provides a relatively stable liquid source and level. Compared with the existing technology of drawing liquid directly from the outlet of the filter structure, it is subject to less filtration resistance, avoids clogging that could significantly affect flow rate and head, and can supply liquid normally for a long time.

[0012] In one optional embodiment, a first flow port and a second flow port are provided on the side of the clean liquid tank;

[0013] The purified liquid tank is connected to the storage tank through the first flow port; the purified liquid tank is connected to the filter structure through the second flow port.

[0014] In one optional embodiment, the bottom surface of the clean liquid tank is provided with a third flow port and a fourth flow port;

[0015] The liquid storage tank is provided with an overflow port and a return port corresponding to the first flow port and the third flow port. The first flow port is connected to the overflow port, and the third flow port is connected to the return port.

[0016] Beneficial effects: After the coating work is completed, the liquid level of the first coating liquid in the storage tank is lower than the return port. The return valve can be partially opened, and the second coating liquid returns to the storage tank through the third flow port and the return port, completely emptying the pipeline of residual liquid, preventing cross-contamination and affecting the next coating work.

[0017] In one alternative implementation, the filtering structure includes:

[0018] The first output component has its input end connected to the liquid storage tank.

[0019] The filter has its input end connected to the output end of the first output component, and is used to filter the first coating liquid to form a second coating liquid. The output end of the filter is connected to the second flow port.

[0020] In one alternative implementation, the first output component is a diaphragm pump.

[0021] Beneficial effects: The diaphragm pump is a unidirectional high-pressure pump, which is beneficial for ultra-precision filtration and will not continuously generate heat from the coating liquid.

[0022] In one optional implementation, the output structure includes:

[0023] The second output component has its input end connected to the fourth flow port.

[0024] An adapter is installed between the second output component and the coating device.

[0025] In one alternative implementation, the second output component is an impeller pump.

[0026] Beneficial effects: The impeller pump provides stable liquid supply. Combined with the clean liquid tank, the resistance of the impeller pump to the liquid is minimized during the liquid supply process, resulting in a stable and smooth liquid supply.

[0027] In one alternative implementation, the adapter is a multi-port pipe fitting.

[0028] Beneficial effects: It enables multi-directional transport of the second coating liquid, and the supply problem of multiple coating devices can be solved by using a composite current collector coating liquid high-precision filtration device.

[0029] In one alternative embodiment, the composite current collector coating liquid high-precision filtration device further includes a reflux valve installed on the pipe between the third flow port and the reflux port. The reflux valve has a first working state of being closed to isolate the clean liquid tank and the storage tank, and a second working state of being partially open to allow the second coating liquid in the clean liquid tank to flow back into the storage tank. Attached Figure Description

[0030] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the overall structure of a high-precision filtration device for composite current collector coating liquid according to an embodiment of the present invention;

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Storage tank; 11. Overflow port; 12. Return port;

[0034] 2. Filter structure; 21. First output component; 22. Filter;

[0035] 3. Clean liquid tank; 31. First flow outlet; 32. Second flow outlet; 33. Third flow outlet; 34. Fourth flow outlet;

[0036] 4. Output structure; 41. Second output component; 42. Adapter component;

[0037] 5. Reflux valve. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0039] Although ultrasonic vibration and mechanical stirring are used after the composite current collector base film coating liquid is stored and prepared, the problem of agglomeration and clustering of nanomaterials still occurs. The coating thickness is only about 50-100nm, and the agglomeration will form patch defects at the coating site. Therefore, the existing technology will install a filter device at the output end of the storage tank.

[0040] However, the liquid supply rate needs to be stable and steady. The pumping pressure is low. When using ultra-precision filters, the small pore size and high resistance make it impossible to supply and filter normally. Even a slight blockage in the ultra-precision filter has a significant impact on the flow rate and head, making it impossible to supply liquid normally.

[0041] To solve the above technical problems, the following will be combined with... Figure 1 The following describes embodiments of the present invention.

[0042] According to an embodiment of the present invention, a high-precision filtration device for composite current collector coating liquid is provided, comprising: a storage tank 1, a filtration structure 2, a clean liquid tank 3, and an output structure 4.

[0043] The first coating liquid is an unfiltered coating liquid, and the second coating liquid is the first coating liquid after being filtered with high precision. A storage tank 1 holds the first coating liquid. A filter structure 2 is connected to the storage tank 1 and filters the first coating liquid to form the second coating liquid. A clean liquid tank 3 is connected to the output end of the filter structure 2, and the filter structure 2 outputs the filtered coating liquid into the clean liquid tank 3. The clean liquid tank 3 stores the second coating liquid output by the filter structure 2. An output structure 4 is connected to the clean liquid tank 3 and can extract the filtered second coating liquid from the clean liquid tank 3 and output it to the coating device.

[0044] High-purity coating solution is a crucial prerequisite for obtaining a uniform, defect-free, high-performance coating. Impurities can lead to coating defects or even product failure. The above-described setup utilizes a high-precision filtration structure 2 specifically designed to convert the unfiltered first coating solution into a high-purity second coating solution. This directly removes particulate matter, gels, bubbles, or other impurities from the coating solution, ensuring its high purity and impurity-free nature. A separate clean liquid tank 3 serves as a buffer storage for the filtered second coating solution, enabling continuous and stable operation of filtration and coating processes. When the coating unit operates at high speed and requires a large amount of liquid, even if the filtration speed cannot keep up, the remaining capacity of the clean liquid tank 3 can meet short-term needs, providing time for operators to adjust the filtration efficiency of the filtration structure 2. This allows the coating unit to continue operating for a period, reducing overall downtime.

[0045] Output structure 4 draws liquid from clean liquid tank 3 to supply the coating device. Clean liquid tank 3 provides a relatively stable liquid source and level. Compared with the prior art of directly drawing liquid from the outlet of filter structure 2, it is subject to less filtration resistance and will not cause blockages that significantly affect flow rate and head, allowing for normal liquid supply for a long time.

[0046] Specifically, the clean liquid tank 3 has a first flow port 31 on the upper left side near the storage tank 1, and a second flow port 32 on the upper right side. The bottom surface of the clean liquid tank 3 has a third flow port 33 and a fourth flow port 34. The storage tank 1 has an overflow port 11 and a return port 12 corresponding to the first flow port 31 and the third flow port 33. The first flow port 31 and the overflow port 11 are on the same horizontal plane, and the return port 12 is lower than the third flow port 33. The first flow port 31 is connected to the overflow port 11, and the third flow port 33 is connected to the return port 12.

[0047] The filter structure 2 includes a first output component 21 and a filter 22. The first output component 21 is a diaphragm pump, which operates under unidirectional high pressure, facilitating ultra-precision filtration and preventing continuous heating of the coating liquid. The input end of the first output component 21 is connected to the outlet of the storage tank 1, located slightly below the right side near the clean liquid tank 3. The input end of the filter 22 is connected to the output end of the first output component 21. The filter 22 is used to filter the first coating liquid, and its output end is connected to the second flow port 32. The filter 2 has a pore size of 0.1 μm to achieve high-precision filtration.

[0048] The output structure 4 includes a second output component 41 and an adapter 42. The second output component 41 is an impeller pump, and its input end is connected to the fourth flow port 34. The adapter 42 is installed between the second output component 41 and the coating device. The adapter 42 is a multi-way pipe connector, such as a tee or a four-way pipe connector. One end of the adapter 42 is connected to the second output component 41, and the other ends can be connected to the coating device to realize multi-directional transportation of the second coating liquid. The liquid supply problem of multiple coating devices can be solved by using a composite current collector coating liquid high-precision filtration device. The impeller pump provides stable liquid supply. Combined with the clean liquid tank 3, the pumping resistance of the impeller pump is minimized during the liquid supply process, resulting in a stable and smooth liquid supply.

[0049] The high-pressure characteristics of diaphragm pumps are used to overcome filter resistance, while impeller pumps provide low-pressure, stable flow; the two work together to resolve the conflict.

[0050] The high-precision filtration device for composite current collector coating liquid also includes a reflux valve 5, which is installed on the pipeline between the third flow port 33 and the reflux port 12. The reflux valve 5 has a first working state of being closed to isolate the clean liquid tank 3 and the storage tank 1, and a second working state of being partially open to allow the second coating liquid in the clean liquid tank 3 to flow back into the storage tank 1.

[0051] The working principle of the above-mentioned high-precision filtration device for composite current collector coating liquid is as follows:

[0052] A certain amount of the first coating liquid is injected into the storage tank 1. The switch valve on the pipeline connecting the first output component 21 and the storage tank 1 is opened, and the switch valve on the pipeline connecting the filter 22 and the clean liquid tank 3 is opened. The return valve 5 is closed. First, the first output component 21 and the filter 22 are started. The first output component 21 draws out the first coating liquid from the storage tank 1 and delivers it to the filter 22. The filter 22 performs high-precision filtration on the first coating liquid to form the second coating liquid, which is then output to the clean liquid tank 3 through the second flow port 32. When the liquid level of the second coating liquid in the clean liquid tank 3 rises to the overflow port 11, and the second coating liquid flows back into the storage tank 1 through the first flow port 31 and the overflow port 11, it indicates that the liquid level of the second coating liquid in the clean liquid tank 3 has stabilized. At this time, under the pressure of the second coating liquid in the clean liquid tank 3, only the second coating liquid will flow towards the storage tank 1. The first coating liquid can continue to be added to the storage tank 1. Through the above steps, the first coating liquid in the storage tank 1 can be prevented from flowing back into the clean liquid tank and contaminating the second coating liquid inside.

[0053] At this time, the second output component 41 can be activated. The second output component 41 draws out the second coating liquid from the fourth flow port 34 and delivers it to the coating device at the liquid supply port through the adapter 42.

[0054] After the coating process is completed, the liquid level of the first coating liquid in the storage tank 1 is lower than the return port 12. The return valve 5 can be partially opened. In the second working state, the return valve 5 is partially open. The second coating liquid returns to the storage tank 1 through the third flow port 33 and the return port 12, completely emptying the pipeline of residual liquid and preventing cross-contamination that could affect the next coating process.

[0055] For ease of control, a check valve can be installed on the conveying pipe between the overflow port 11 and the first flow port 31, so that the flow can only flow from the clean liquid tank 3 to the storage tank 1. This is to ensure that the second coating liquid in the clean liquid tank is always clean and to prevent the first coating liquid in the storage tank 1 from flowing back into the clean liquid tank and contaminating the second coating liquid inside.

[0056] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A high-precision filtration device for composite current collector coating liquid, characterized in that, include: Storage tank (1), the storage tank (1) is used to hold the first coating liquid; A filter structure (2) is connected to the liquid storage tank (1) and is used to filter the first coating liquid to form a second coating liquid. A clean liquid tank (3) is connected to the filter structure (2) and is used to store the second coating liquid. Output structure (4) is connected to the clean liquid tank (3) and is used to output the second coating liquid in the clean liquid tank (3) to the coating device.

2. The high-precision filtration device for composite current collector coating liquid according to claim 1, characterized in that, The clean liquid tank (3) has a first flow port (31) and a second flow port (32) on its side; The clean liquid tank (3) is connected to the storage tank (1) through the first flow port (31); the clean liquid tank (3) is connected to the filter structure (2) through the second flow port (32).

3. The high-precision filtration device for composite current collector coating liquid according to claim 2, characterized in that, The bottom surface of the clean liquid tank (3) is provided with a third flow port (33) and a fourth flow port (34); The liquid storage tank (1) is provided with an overflow port (11) and a return port (12) corresponding to the first flow port (31) and the third flow port (33). The first flow port (31) is connected to the overflow port (11), and the third flow port (33) is connected to the return port (12).

4. The high-precision filtration device for composite current collector coating liquid according to claim 3, characterized in that, The filter structure (2) includes: The first output component (21) has its input end connected to the liquid storage tank (1); The filter (22) has its input end connected to the output end of the first output component (21). The filter (22) is used to filter the first coating liquid to form a second coating liquid. The output end of the filter (22) is connected to the second flow port (32).

5. The high-precision filtration device for composite current collector coating liquid according to claim 4, characterized in that, The first output component (21) is a diaphragm pump.

6. The high-precision filtration device for composite current collector coating liquid according to claim 4, characterized in that, The output structure (4) includes: The second output component (41) has its input end connected to the fourth flow port (34); An adapter (42) is installed between the second output (41) and the coating device.

7. The high-precision filtration device for composite current collector coating liquid according to claim 6, characterized in that, The second output component (41) is an impeller pump.

8. The high-precision filtration device for composite current collector coating liquid according to claim 6, characterized in that, The adapter (42) is a multi-port pipe connector.

9. The high-precision filtration device for composite current collector coating liquid according to claim 6, characterized in that, The composite current collector coating liquid high-precision filtration device also includes a reflux valve (5), which is installed on the pipe between the third flow port (33) and the reflux port (12). The reflux valve (5) has a first working state of being closed to isolate the clean liquid tank (3) and the storage tank (1), and a second working state of being half-open to allow the second coating liquid in the clean liquid tank (3) to flow back into the storage tank (1).

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