Coating feeding device

Abstract

The utility model discloses a coating feeding device which comprises an oval buffer tank, a spraying head and a vacuum valve are arranged at the top of the buffer tank, the buffer tank comprises a first buffer tank body and a second buffer tank body, the first buffer tank body is connected with the second buffer tank body, and a feeding port is formed in the buffer tank body; the feeding pipe is connected with the first buffer tank and the second buffer tank through a feeding port; the feeding pipe is connected with the first buffer tank and the second buffer tank through the automatic switching valve; the oval buffer tank is designed, the buffer tank is arranged to be closed, slurry is prevented from making contact with and controlling outside air, and a negative pressure vacuum mode can be adopted, so that the effect of more rapid defoaming is achieved; and the spraying head is arranged at the top of the buffer tank, after the buffer tank is used, the interior of the buffer tank is cleaned, pipeline disassembly is not needed, and therefore the labor cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of slurry coating technology, and in particular to a coating feeding device. Background Technology

[0002] Battery slurry coating typically involves coating the surface of a die material that is already coated with slurry. To enable the die to continuously perform coating operations, a buffer tank is needed to store a certain amount of slurry, and the buffer tank is connected to the coating system to continuously supply slurry to the die.

[0003] During the coating process of the positive and negative electrodes of the battery, irregular bubbles may appear in the slurry in the buffer tank. In severe cases, bubbles may even leak from the foil. This is because there is gas inside the slurry that has not been fully expelled, which is generated during the coating process. Currently, the mainstream buffer tanks used to supply slurry to the coating machine are not completely sealed during long-term use. Air can be introduced, especially for water-based slurry of the negative electrode. Over time, slurry solidification and clumping may occur at the top of the buffer tank, posing a risk of falling into the buffer tank and mixing with the normal slurry. In addition, current buffer tanks are usually cylindrical.

[0004] Therefore, a dead corner will be formed at the connection between the bottom and the side inside the buffer tank. Without opening the buffer tank, it is difficult to clean the inside of the buffer tank. Moreover, during the cleaning of the buffer tank, the coating and feeding process has to be interrupted, which reduces the efficiency of coating and feeding. Utility Model Content

[0005] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a coating and feeding device. By using an elliptical buffer tank, there are no included angles inside the buffer tank. The buffer tank is set to be closed to prevent the slurry from contacting the outside air. It can also use negative pressure vacuum to achieve a faster defoaming effect. By setting a spray head on the top of the buffer tank, the inside of the buffer tank can be cleaned after the buffer tank is used without disassembling the pipeline, thereby saving labor costs.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: a coating and feeding device, comprising:

[0007] The buffer tank is elliptical in shape and is a closed system. The top of the buffer tank is equipped with a spray head and a vacuum valve. The buffer tank includes a first buffer tank and a second buffer tank, with the first buffer tank connected to the second buffer tank. The buffer tank is equipped with a feed inlet.

[0008] A feed pipe, which is connected to the first buffer tank and the second buffer tank through the feed port;

[0009] An automatic switching valve is provided, through which the feed pipe is connected to the first buffer tank and the second buffer tank.

[0010] In this technical solution, a buffer tank is used to store and agitate the slurry within it. The elliptical shape of the buffer tank facilitates more thorough agitation of the slurry during mixing. Furthermore, the elliptical shape eliminates dead corners during cleaning, making cleaning easier and saving manpower. The buffer tank is designed as a sealed unit to prevent the slurry from contacting outside air, and a vacuum valve is used to extract air from the tank, thus isolating the slurry from air, preventing oxidation and discoloration, and achieving faster defoaming. The use of dual buffer tanks instead of the original single buffer tank improves the efficiency of loading slurry into the buffer tanks. By alternately using the slurry in the first and second buffer tanks, and simultaneously cleaning or replenishing the slurry in the other buffer tank, the coating and feeding device can continuously perform coating operations without interruption, improving the efficiency of the coating and feeding device. A spray head is installed at the top of the buffer tank to clean the inside of the tank after use, eliminating the need for pipe disassembly and saving labor costs. The feed pipe is used to introduce the slurry into the first and second buffer tanks, and an automatic switching valve is used to switch the connection between the feed pipe and the first and second buffer tanks, thereby achieving the effect of feeding the first and second buffer tanks separately.

[0011] In some embodiments, the coating and feeding device further includes a die head and an automatic ball valve, and the buffer tank is also provided with a discharge port, with the die head connected to the discharge port of the buffer tank through the automatic ball valve.

[0012] In this technical solution, the die head is used to coat the product, and the automatic ball valve is used to connect the first buffer tank, the second buffer tank and the die head respectively, thereby switching the supply of coating slurry to the die head and improving coating efficiency.

[0013] In some embodiments, the buffer tank further includes a level sensor disposed within the buffer tank.

[0014] In this technical solution, the level sensor is used to detect the level of slurry in the buffer tank, thereby facilitating the switching operation of the automatic switching valve and the automatic ball valve.

[0015] In some embodiments, the coating feeding device further includes a screw pump connected to the automatic ball valve and the die head.

[0016] In this technical solution, a screw pump is used to provide power to the slurry, thereby guiding the slurry from the buffer tank to the die head.

[0017] In some embodiments, the coating feeding device further includes a filter element connected to the screw pump and the die head.

[0018] In this technical solution, the filter element is used to filter large particles inside the slurry, thereby ensuring the coating quality of the die head and improving the quality of the finished product.

[0019] In some embodiments, the coating and feeding device further includes an iron remover, through which the filter element is connected to the die head.

[0020] In this technical solution, the iron remover is used to adsorb the iron components inside the slurry.

[0021] In some embodiments, the coating feeding device further includes a return pipe connected to the buffer tank and the die head.

[0022] In this technical solution, the return pipe is used to guide excess slurry from the die head to the buffer tank.

[0023] In some embodiments, the buffer tank further includes an agitator and a motor, the agitator being disposed inside the buffer tank and the motor being disposed outside the buffer tank, the motor being connected to the agitator.

[0024] In this technical solution, the stirring paddle is used to stir the slurry, and the motor is used to drive the stirring paddle to move, thereby degassing the slurry.

[0025] In some embodiments, the buffer container also includes a light source located at the top inside the buffer container.

[0026] In this technical solution, the lighting is used to illuminate the interior space of the buffer tank, thereby facilitating observation of the internal conditions of the buffer tank and the condition of the slurry.

[0027] In some embodiments, the buffer container further includes a viewing window disposed on the top of the buffer container.

[0028] In this technical solution, the viewing window allows operators to observe the inside of the buffer tank, thereby determining the state of the slurry. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall coating and feeding device according to an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the buffer tank of a coating feeding device according to an embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the viewing window of a coating and feeding device according to an embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of the buffer tank support of a coating and feeding device according to an embodiment of the present invention;

[0033] In the diagram: 1. Buffer tank; 11. First buffer tank; 12. Second buffer tank; 13. Inlet; 14. Outlet; 15. Level sensor; 161. Agitator; 162. Motor; 17. Spray head; 18. Vacuum valve; 19. Lighting; 10. Viewing window; 101. Rubber scraper; 2. Feed pipe; 3. Screw pump; 4. Filter element; 5. Iron separator; 6. Die head; 7. Return pipe; 8. Buffer tank bracket; 81. Loading end; 82. Support end; 91. Automatic switching valve; 92. Automatic ball valve. Detailed Implementation

[0034] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0035] It should be noted that in the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. These terms are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. The terms "horizontal," "vertical," and "suspended," etc., do not indicate that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0036] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0037] Combined with appendix Figure 1 and attached Figure 2 As shown, this utility model provides a coating feeding device, including a first buffer tank 11 and a second buffer tank 12 arranged side by side. The feed pipe 2 is connected to either the first buffer tank 11 or the second buffer tank 12 under the action of an automatic switching valve 91. The coating feeding device also includes a die head 6 that can be connected to both the first buffer tank 11 and the second buffer tank 12, and an automatic ball valve 92 for controlling the connection between the first buffer tank 11 or the second buffer tank 12 and the die head 6.

[0038] The first buffer tank 11 and the second buffer tank 12 of this utility model are both elliptical. The elliptical shape of the buffer tank 1 facilitates more thorough mixing of the slurry inside during stirring. At the same time, the buffer tank 1 is set as a closed type to prevent the slurry from contacting the outside air. In addition, there are no dead corners inside the elliptical buffer tank 1, making it easier to clean and saving manpower. The closed design of the buffer tank 1 also prevents the slurry inside the buffer tank from coming into contact with the outside air and changing color.

[0039] The feed pipe 2 is connected to the first buffer tank 11 and the second buffer tank 12 via an automatic switching valve 91. The automatic switching valve 91 is used to switch the connection between the feed pipe 2 and the first buffer tank 11 and the second buffer tank 12, thereby achieving the effect of feeding the first buffer tank 11 and the second buffer tank 12 respectively, improving the efficiency of loading slurry into the buffer tank 1. For example, when filling the first buffer tank 11 and the second buffer tank 12 with slurry, the automatic switching valve 91 connects the feed pipe 2 and the first buffer tank 11 to fill the first buffer tank 11 with slurry. When the slurry in the first buffer tank 11 has not reached the warning line, the feed pipe continues to fill the first buffer tank 11 with slurry. When the slurry in the first buffer tank 11 reaches the warning line, the filling of the first buffer tank 11 with slurry is stopped, and the automatic switching valve 91 connects the feed pipe 2 and the second buffer tank 12. When the slurry in the second buffer pipe reaches the warning line, the filling of the second buffer tank 12 with slurry is stopped.

[0040] Both the first buffer tank 11 and the second buffer tank 12 have discharge ports 14 at their bottoms, which are connected to automatic ball valves 92. The automatic ball valves 92 can connect the first buffer tank 11 and the second buffer tank 12 to the die head 6, respectively. After the slurry in the buffer tank 1 is thoroughly stirred by the stirring paddle 161 to achieve degassing, the product can be coated using the die head 6. By rolling the die head 6, the slurry is evenly coated onto the product. Automatic ball valve 92 is used to connect the first buffer tank 11, the second buffer tank 12, and the die head 6 respectively, thereby switching the supply of coating slurry to the die head 6 and improving coating efficiency. For example, when there is sufficient slurry stored in the first buffer tank 11 and the second buffer tank 12, automatic ball valve 92 controls the first buffer tank 11 to connect to the die head 6, using the slurry stored in the first buffer tank 11 for coating. When the slurry in the first buffer tank 11 is used up, automatic ball valve 92 automatically switches to connect the die head 6 to the second buffer tank 12. At this time, automatic switching valve 91 controls the feed pipe to connect to the first buffer tank 11, thereby filling the first buffer tank 11 with slurry and simultaneously using the slurry stored in the second buffer tank 12 for coating. This saves the time required for manual switching of buffer tank 11 or replenishment of slurry, greatly improving production efficiency. It also solves the problem of forced machine interruption when cleaning the buffer tanks in the prior art, improving the efficiency of coating and feeding.

[0041] The top of both the first buffer tank 11 and the second buffer tank 12 is equipped with a spray head 17 and a vacuum valve 18. The vacuum valve 18 is used to extract the air from the buffer tank 1 after the feed pipe 2 fills the buffer tank 1 with slurry, thereby isolating the slurry from contact with air and preventing the slurry from oxidizing and discoloring. The spray head 17 is used to clean the inside of the buffer tank 1 after use without disassembling the pipeline, thus saving labor costs.

[0042] Continue to combine with the appendix Figure 2 As shown, in some embodiments, a stirring paddle 161 is also provided inside the buffer tank 1, and the stirring paddle 161 rotates under the drive of a motor 162. The motor 162 is located outside the buffer tank 1, and the stirring paddle 161 is used to stir the slurry. The motor 162 is used to drive the stirring paddle 161 to move, thereby performing degassing treatment on the slurry.

[0043] Continue to combine with the appendix Figure 2 and attached Figure 3 As shown, in some embodiments, in order to facilitate observation of the slurry inside the buffer tank 1, such as the stirring of the slurry inside the buffer tank 1, an illumination lamp 19 is provided on the inner top of the buffer tank 1, and a viewing window 10 is provided on the outer top of the buffer tank 1. The illumination lamp 19 is used to illuminate the internal space of the buffer tank 1, thereby facilitating observation of the internal conditions of the buffer tank 1 and the condition of the slurry. The viewing window 10 facilitates the operator's observation of the inside of the buffer tank 1. The top of the viewing window 10 can be made of glass, and an electric rubber scraper 101 is provided inside, so that after the slurry splashes onto the viewing window 10 during the stirring process, the viewing window 10 can be cleaned with the rubber scraper 101 to prevent obstruction of the view when observing the internal conditions of the buffer tank.

[0044] Continue to combine with the appendix Figure 4 As shown, the elliptical buffer tank is difficult to keep upright. Therefore, in some embodiments, the coating feeding device also includes a buffer tank support 8. The buffer tank support 8 includes a loading end 81 and a support end 82. The loading end 81 is annular and the buffer tank 1 is disposed on the loading end 81. The support end 82 is columnar and the top of the support end 82 is fixed to the loading end 81. The buffer tank 1 is upright on the ground by the support end 82.

[0045] Continue to combine with the appendix Figure 2 As shown, in some embodiments, a level sensor 15 is also provided at the top of the buffer tank 1. The level sensor 15 is used to detect the level of the slurry in the buffer tank 1. The level sensor can be an ultrasonic level sensor or a radar level sensor located at the top of the tank body of the buffer tank 1.

[0046] For example, when filling the first buffer tank 11 and the second buffer tank 12 with slurry using the feed pipe 2, the level sensor 15 detects the position of the slurry level in the first buffer tank 11 and the second buffer tank 12: when the slurry level in the first buffer tank 11 is lower than the warning line, the automatic switching valve 91 continues to control the feed pipe 2 to be in a conductive state with the first buffer tank 11; when the slurry level in the first buffer tank 11 is higher than or at the warning line, the automatic switching valve 91 controls the feed pipe 2 to be in a conductive state with the second buffer tank 12, and the feed pipe 2 is used to fill the second buffer tank 12 with slurry. After the slurry inside the first buffer tank 11 and the second buffer tank 12 is stirred and degassed using the stirring paddle 161, the slurry can be used for coating. At this time, when the level sensor 15 detects that the slurry stored in the first buffer tank 11 and the second buffer tank 12 are sufficient, the automatic ball valve 92 controls the first buffer tank 11 to open the die head 6, and uses the slurry stored in the first buffer tank 11 for coating. When the level sensor 15 detects that the slurry in the first buffer tank 11 is insufficient, the automatic ball valve 92 automatically switches to open the die head 6 to open the second buffer tank 12, and uses the slurry stored in the second buffer tank 12 for coating, to prevent uneven coating of the product.

[0047] Continue to combine with the appendix Figure 1 As shown, in some embodiments, the coating feeding device further includes a screw pump 3, a filter element 4, and a magnetic separator. The screw pump 3 is connected to the buffer tank 1 via an automatic ball valve and to the die head 6 via the filter element 4 and the magnetic separator 5. The screw pump 3 is used to provide power to the slurry, thereby guiding the slurry from the buffer tank 1 to the filter element 4 and the magnetic separator 5, and finally to the die head 6. The filter element 4 is used to filter large particles inside the slurry, and the magnetic separator 5 is used to remove iron components from the slurry, thereby ensuring the coating quality of the final die head 6 and improving the quality of the finished product.

[0048] Continue to combine with the appendix Figure 1 As shown, in some embodiments, the coating feeding device further includes a return pipe 7, one end of which is connected to a buffer tank 1, and the other end of which is connected to a die head 6. The return pipe 7 is used to guide excess slurry from the die head 6 to the buffer tank 1. The return pipe 7 can be connected to either the first buffer tank 11 or the second buffer tank 12.

[0049] Inlet ports 13 are provided on the first buffer tank 11 and the second buffer tank 12. The feed pipe 2 is connected to the inlet ports 13 of the first buffer tank 11 and the second buffer tank 12 respectively under the action of the automatic switching valve 91 and injects slurry into the tank. The level sensor 15 detects the slurry level inside the first buffer tank 11 and the second buffer tank 12, and controls whether to stop filling the first buffer tank 11 and the second buffer tank 12 based on the slurry level. For example, firstly, the automatic switching valve 91 connects the feed pipe 2 and the first buffer tank 11 to fill the first buffer tank 11 with slurry. When the slurry in the first buffer tank 11 has not reached the warning line, the feed pipe 2 continues to fill the first buffer tank 11 with slurry. When the slurry in the first buffer tank 11 reaches the warning line, the filling of the first buffer tank 11 is stopped, and the automatic switching valve 91 connects the feed pipe 2 and the second buffer tank 12. When the slurry in the second buffer tank 12 reaches the warning line, the filling of the second buffer tank 12 is stopped. Then, the vacuum valve 18 is used to connect the first buffer tank 11 and the second buffer tank 12. Air is extracted from tank 12 to prevent the slurry inside the first buffer tank 11 and the second buffer tank 12 from being exposed to air for a long time, which could cause discoloration and affect the quality of the coated product. After the air is extracted from the first buffer tank 11 and the second buffer tank 12, the stirring paddle 161 driven by motor 162 is used to stir the slurry inside the first buffer tank 11 and the second buffer tank 12 to prevent the slurry from solidifying. When using the coating feeding device, the screw pump 3 extracts the slurry through the discharge port 14 of the first buffer tank 11 and guides the slurry to the filter element 4. The filter element 4 is used to filter the slurry to remove particulate matter, thereby improving the quality of the slurry. After the slurry is filtered by the filter element 4, it is guided to the iron remover 5. The iron remover 5 further removes iron impurities from the slurry, thereby further improving the quality of the slurry. Then, the die head 6 is used to coat the product with the slurry.

[0050] In some embodiments, during the coating process, when the level sensor 15 detects insufficient slurry in the first buffer tank 11, an automatic ball valve 92 switches the screw pump 3 to connect to the second buffer tank 12, using the slurry in the second buffer tank 12 for coating. Simultaneously, an automatic switching valve 91 connects the feed pipe 2 to the first buffer tank 11, filling the first buffer tank 11 with slurry, thus allowing the die head 6 to continuously perform coating operations without interruption. Similarly, when the level sensor 15 detects insufficient slurry in the second buffer tank 12, the automatic ball valve 92 switches to connect to the first buffer tank 11 and performs coating. At the same time, the second buffer tank 12 is filled with slurry.

[0051] In summary, this utility model provides a coating and feeding device, which has the following beneficial effects:

[0052] ① By utilizing an elliptical buffer tank, there are no corners inside the tank, which helps to mix the slurry more thoroughly during stirring, thus achieving a faster defoaming effect. When cleaning the buffer tank, there are no dead corners inside the elliptical tank, making it easier to clean and further saving manpower.

[0053] ② When the slurry is fed into the buffer tank, an automatic switching valve 91 connects the feed pipe 2 to the first buffer tank 11 and the second buffer tank 12 respectively. The automatic switching valve 91 switches the connection between the feed pipe 2 and the first and second buffer tanks 11 and 12, thereby achieving the effect of feeding the first and second buffer tanks 11 and 12 respectively, improving the efficiency of loading slurry into the buffer tank 1. When using the slurry in the buffer tank for coating, an automatic ball valve 92 switches the connection between the die head 6 and the first and second buffer tanks 11 and 12 to prevent interruption of the die head 6's supply. The slurry in the first and second buffer tanks 11 and 12 is used alternately, while the slurry in the other buffer tank is replenished. This allows the coating feeding device to continuously feed and coat without interruption, improving the efficiency of the coating feeding device. When cleaning or other operations are required in the buffer tank, the feeding process does not need to be interrupted, further improving coating efficiency.

[0054] ③ By installing spray nozzles on the top of the buffer tank, the inside of the buffer tank can be cleaned after use without disassembling the pipes, thus saving labor costs; by using a vacuum valve to extract air from the buffer tank, the slurry is isolated from air, preventing oxidation and discoloration of the slurry.

[0055] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A coating and feeding device, characterized in that, include: The buffer tank is elliptical in shape and is a closed system. The top of the buffer tank is equipped with a spray head and a vacuum valve. The buffer tank includes a first buffer tank and a second buffer tank, with the first buffer tank connected to the second buffer tank. The buffer tank is equipped with a feed inlet. A feed pipe, which is connected to the first buffer tank and the second buffer tank through the feed port; An automatic switching valve is provided, through which the feed pipe is connected to the first buffer tank and the second buffer tank.

2. The coating and feeding device according to claim 1, characterized in that, It also includes a die head and an automatic ball valve. The buffer tank is also provided with a discharge port, and the die head is connected to the discharge port of the buffer tank through the automatic ball valve.

3. The coating and feeding device according to claim 2, characterized in that, The buffer tank also includes a liquid level sensor, which is disposed inside the buffer tank.

4. The coating and feeding device according to claim 2, characterized in that, It also includes a screw pump, which is connected to the automatic ball valve and the die head.

5. The coating and feeding device according to claim 4, characterized in that, It also includes a filter element, which is connected to the screw pump and the die head.

6. The coating and feeding device according to claim 5, characterized in that, It also includes an iron remover, through which the filter element is connected to the die head.

7. The coating and feeding device according to claim 2, characterized in that, It also includes a return pipe that connects the buffer tank and the mold head.

8. The coating and feeding device according to claim 1, characterized in that, The buffer tank also includes a stirring paddle and a motor. The stirring paddle is located inside the buffer tank, and the motor is located outside the buffer tank. The motor is connected to the stirring paddle.

9. The coating and feeding device according to claim 1, characterized in that, The buffer container also includes a light source located at the top inside the buffer container.

10. The coating and feeding device according to claim 1, characterized in that, The buffer container also includes a viewing window, which is located on the top of the buffer container.

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