A diaphragm washing line

Abstract

This utility model relates to a separator washing production line in the field of battery separator technology. It includes several separator washing tanks, each with an outlet and an inlet on its two ends. A first extended sheet metal is provided along the lower edge of the outlet, and a second extended sheet metal is provided along the lower edge of the inlet. The upper edge of the first extended sheet metal also has a downwardly bent sheet metal. When two adjacent separator washing tanks are connected via the outlet and inlet, the first extended sheet metal abuts against the surface of the second extended sheet metal through the bent sheet metal, forming an upwardly convex dihedral structure. During the transport of the battery separator between the outlet and inlet, residual dichloromethane drips onto the dihedral structure formed by the first and second extended sheet metals and slides to both sides. The connection between the first and second extended sheet metals is covered by the bent sheet metal, preventing leakage of dichloromethane at the connection between the outlet and inlet.

Description

Technical Field

[0001] This utility model relates to the field of battery separator technology, and in particular to a separator washing production line. Background Technology

[0002] In current battery separator manufacturing processes, dichloromethane is typically used to clean the separator. According to existing Chinese utility model patent CN210995511U, a separator washing system extraction tank and an extraction tank spray structure are described. The extraction tank spray structure includes a spray assembly and a circulation assembly disposed within the extraction tank. This spray structure allows for more thorough extraction of the lithium battery separator within the extraction tank, improving production efficiency.

[0003] However, the dichloromethane used in existing diaphragm washing lines is toxic. Therefore, the leak-proof performance of diaphragm washing lines, which consist of multiple interconnected diaphragm washing tanks, needs to meet standards. Since dichloromethane remains in liquid form within the washing tanks, residual dichloromethane on the battery separators can drip onto the connection point between the two tanks during transport. The existing flat-mouth connection structure of the diaphragm washing tanks poses a certain risk of leakage. Therefore, there is an urgent need to develop a diaphragm washing line to meet practical application requirements. Utility Model Content

[0004] The purpose of this invention is to provide a diaphragm washing production line to solve the above-mentioned defects.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A diaphragm washing production line includes several diaphragm washing tanks. Each diaphragm washing tank has a discharge port and a feed port on its two end faces. The several diaphragm washing tanks are connected to each other through the discharge port and feed port to form a linear array structure. The lower edge of the discharge port of the diaphragm washing tank is provided with a first extended sheet metal, the top of which extends outward. The lower edge of the feed port of the diaphragm washing tank is provided with a second extended sheet metal, the top of which also extends outward. The upper edge of the first extended sheet metal is also provided with a downwardly bent sheet metal, the slope of which is consistent with the slope of the second extended sheet metal. When two adjacent diaphragm washing tanks are connected through the discharge port and feed port, the first extended sheet metal abuts against the surface of the second extended sheet metal through the bent sheet metal to form an upwardly convex dihedral structure.

[0006] In the above description, as a further embodiment, the interior of the diaphragm washing tank is an inner cavity for conducting diaphragm material. The inner cavity is provided with several rotatable first transmission rollers at the same height position as the discharge port and the inlet port, and several rotatable second transmission rollers are provided at the bottom of the inner cavity.

[0007] As a further solution, the diaphragm washing tank is further provided with a pipe spray structure inside, which is connected to the inner cavity through a circulation component.

[0008] As a further embodiment of the above description, the pipeline spraying structure includes a spray pipe and several nozzles. The spray pipe is horizontally arranged inside the spraying chamber and is parallel to the first drive roller and the second drive roller.

[0009] As a further embodiment of the above description, the circulation assembly includes a water pump, a filter, and a connecting hose. The bottom side wall of the spray chamber is provided with an outlet flange. One end of the water pump is connected to the spray chamber through the outlet flange, and the other end of the water pump is connected to the filter. The top side wall of the spray chamber is provided with an inlet flange. One end of the spray pipe is connected to the inlet flange, one end of the connecting hose is connected to the filter, and the other end of the connecting hose is connected to the inlet flange.

[0010] In the above description, as a further embodiment, the spray pipes are arranged horizontally along the radial direction on the side of the first drive roller near the feed inlet, the nozzles are inclined toward the surface of the first drive roller, and several supports are provided in the middle of the spray pipes. The spray pipes are fixedly connected to the inside of the feed inlet through the supports, and the nozzles are inclined toward the first drive roller near the feed inlet.

[0011] In the above description, as a further option, several nozzles are arranged in a linear array on the side wall of the spray pipe, the spray pipe is a hollow structure, and the nozzles and the spray pipe are connected.

[0012] As a further embodiment of the above description, a partition is provided in the middle of the inner cavity, which divides the inner cavity into a spray chamber and a soaking chamber. The side near the inlet is the spray chamber, and the side near the inlet is the soaking chamber. The height of the partition is below the outlet and the inlet, and the pipeline spray structure is set on one side of the spray chamber.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: by providing an outwardly extending first and second extended sheet metal at the outlet and inlet of two adjacent diaphragm washing tanks respectively, when the outlet and inlet are connected, the first extended sheet metal abuts against the surface of the second extended sheet metal through bending sheet metal to form an upwardly convex dihedral structure. When the battery separator is transported between the outlet and inlet, residual dichloromethane will drip onto the dihedral structure formed by the first and second extended sheet metal and slide to both sides. Furthermore, the connection between the first and second extended sheet metal is covered by bending sheet metal, making it difficult for dichloromethane to leak at the connection between the outlet and inlet. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of a diaphragm washing production line as described in this embodiment; Figure 2 for Figure 1 A partially enlarged structural diagram of A in the middle. Figure 3 This is a three-dimensional structural diagram of the diaphragm washing tank described in this embodiment; Figure 4 This is a schematic diagram of the internal structure of the diaphragm washing tank described in this embodiment; Figure 5 for Figure 4 A magnified schematic diagram of the partial structure of B in the diagram; Figure 6 for Figure 4 A magnified schematic diagram of the structure of C in the middle; In the diagram: 1-Diaphragm washing tank, 11-Spray chamber, 12-Soaking chamber, 2-Outlet, 21-First extended sheet metal, 22-Bent sheet metal, 3-Inlet, 31-Second extended sheet metal, 41-First drive roller, 42-Second drive roller, 5-Spray pipe, 51-Nozzle, 6-Circulation assembly, 61-Water pump, 62-Filter, 63-Conducting hose, 64-Bracket, 7-Baffle plate, 8-Inlet flange, 9-Outlet flange. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0016] For this embodiment, please refer to Figures 1-6 The specific implementation of the diaphragm washing production line includes several diaphragm washing tanks 1. The two ends of the diaphragm washing tanks 1 are respectively provided with a discharge port 2 and a feed port 3. The several diaphragm washing tanks 1 are connected to each other through the discharge port 2 and the feed port 3 to form a linear array structure. A partition 7 is provided in the middle of the inner cavity. The partition 7 divides the inner cavity into a spray chamber 11 and a soaking chamber 12. The side closer to the feed port 3 is the spray chamber 11, and the side closer to the feed port 3 is the soaking chamber 12. The height of the partition 7 is below the discharge port 2 and the feed port 3.

[0017] The lower edge of the discharge port 2 of the diaphragm washing tank 1 is provided with a first extended sheet metal 21, the top of the first extended sheet metal 21 extends outward. The lower edge of the inlet 3 of the diaphragm washing tank 1 is provided with a second extended sheet metal 31, the top of the second extended sheet metal 31 extends outward. The upper edge of the first extended sheet metal 21 is also provided with a downwardly bent sheet metal 22, the slope of the bent sheet metal 22 is consistent with the slope of the second extended sheet metal 31. When two adjacent diaphragm washing tanks 1 are connected through the discharge port 2 and the inlet 3, the first extended sheet metal 21 abuts against the surface of the second extended sheet metal 31 through the bent sheet metal 22 to form an upwardly convex dihedral structure.

[0018] By providing an outwardly extending first extended sheet metal 21 and a second extended sheet metal 31 at the outlet 2 and inlet 3 of two adjacent diaphragm washing tanks 1 respectively, when the outlet 2 and inlet 3 are connected, the first extended sheet metal 21 abuts against the surface of the second extended sheet metal 31 through a bent sheet metal 22 to form an upwardly convex dihedral structure. When the battery separator is transported between the outlet 2 and inlet 3, residual dichloromethane will drip onto the dihedral structure formed by the first extended sheet metal 21 and the second extended sheet metal 31 and slide to both sides. The connection between the first extended sheet metal 21 and the second extended sheet metal 31 is covered by the bent sheet metal 22, so that dichloromethane is not easy to leak at the connection between the outlet 2 and inlet 3.

[0019] Specific examples Figure 1 and Figure 3 As shown, the interior of the diaphragm washing tank 1 is an inner cavity for conducting diaphragm material. The inner cavity is provided with several rotatable first transmission rollers 41 at the same height position as the discharge port 2 and the inlet port 3, and several rotatable second transmission rollers 42 are provided at the bottom of the inner cavity.

[0020] The diaphragm washing tank 1 is also equipped with a pipe spray structure inside. The pipe spray structure is connected to the inner cavity through the circulation component 6. The pipe spray structure is located on one side of the spray chamber 11.

[0021] The pipeline spraying structure includes a spray pipe 5 and several nozzles 51. The spray pipe 5 is horizontally arranged inside the spray chamber 11, and the spray pipe 5 is parallel to the first transmission roller 41 and the second transmission roller 42. The circulation component 6 includes a water pump 61, a filter 62, and a connecting hose 63. The bottom side wall of the spray chamber 11 is provided with a water outlet flange 9. One end of the water pump 61 is connected to the spray chamber 11 through the water outlet flange 9, and the other end of the water pump 61 is connected to the filter 62. The top side wall of the spray chamber 11 is provided with a water inlet flange 8. One end of the spray pipe 5 is connected to the water inlet flange 8, one end of the connecting hose 63 is connected to the filter 62, and the other end of the connecting hose 63 is connected to the water inlet flange 8.

[0022] In a further embodiment, the spray pipe 5 is arranged horizontally along the radial direction on the side of the first drive roller 41 near the feed inlet 3. The nozzles 51 are inclined toward the surface of the first drive roller 41. Several supports 64 are provided in the middle of the spray pipe 5. The spray pipe 5 is fixedly connected to the inside of the feed inlet 3 through the supports 64. The nozzles 51 are inclined toward the first drive roller 41 near the feed inlet 3. Several nozzles 51 are arranged in a linear array on the side wall of the spray pipe 5. The spray pipe 5 is a hollow structure. The nozzles 51 are connected to the spray pipe 5.

[0023] Several nozzles 51 are arranged radially and horizontally on one side of the first drive roller 41 through the spray pipe 5. The nozzles 51 are inclined towards the surface of the first drive roller 41, so that the spray direction of the nozzles 51 can be concentrated on the surface of the first drive roller 41. This can effectively transmit the impact force of the water flow to the first drive roller 41, avoid the water flow impacting the diaphragm and causing shaking, and ensure the stability of the diaphragm transportation.

[0024] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A diaphragm washing production line, comprising a plurality of diaphragm washing tanks, each diaphragm washing tank having a discharge port and a feed port at its two ends, the plurality of diaphragm washing tanks being interconnected through the discharge port and feed port to form a linear array structure, characterized in that: The lower edge of the discharge port of the diaphragm washing tank is provided with a first extended sheet metal, the top of which extends outward. The lower edge of the inlet of the diaphragm washing tank is provided with a second extended sheet metal, the top of which extends outward. The upper edge of the first extended sheet metal is also provided with a downwardly bent sheet metal, the slope of which is consistent with the slope of the second extended sheet metal. When two adjacent diaphragm washing tanks are connected through the discharge port and the inlet port, the first extended sheet metal abuts against the surface of the second extended sheet metal through the bent sheet metal to form an upwardly convex dihedral structure.

2. A diaphragm washing line according to claim 1, characterized in that: The interior of the diaphragm washing tank is an inner cavity for conducting diaphragm material. Several rotatable first transmission rollers are provided in the inner cavity at the same height as the discharge port and the inlet port. Several rotatable second transmission rollers are provided at the bottom of the inner cavity.

3. A diaphragm washing production line according to claim 2, characterized in that: The diaphragm washing tank is also equipped with a pipe spray structure, which is connected to the inner cavity through a circulation component.

4. A diaphragm washing production line according to claim 3, characterized in that: The pipeline spraying structure includes a spray pipe and several nozzles. The spray pipe is horizontally arranged inside the spraying chamber and is parallel to the first and second drive rollers.

5. A diaphragm washing production line according to claim 4, characterized in that: The circulation assembly includes a water pump, a filter, and a connecting hose. The bottom side wall of the spray chamber is provided with a water outlet flange. One end of the water pump is connected to the spray chamber through the water outlet flange, and the other end of the water pump is connected to the filter. The top side wall of the spray chamber is provided with a water inlet flange. One end of the spray pipe is connected to the water inlet flange, one end of the connecting hose is connected to the filter, and the other end of the connecting hose is connected to the water inlet flange.

6. A diaphragm washing production line according to claim 5, characterized in that: The spray pipes are arranged horizontally along the radial direction on the side of the first drive roller near the feed inlet. The nozzles are inclined toward the surface of the first drive roller. Several supports are provided in the middle of the spray pipes. The spray pipes are fixedly connected to the inside of the feed inlet through the supports. The nozzles are inclined toward the first drive roller near the feed inlet.

7. A diaphragm washing line according to claim 6, characterized in that: The nozzles are arranged in a linear array on the side wall of the spray pipe. The spray pipe is hollow, and the nozzles are connected to the spray pipe.

8. A diaphragm washing line according to claim 7, characterized in that: A partition is provided in the middle of the inner cavity, which divides the inner cavity into a spray chamber and a soaking chamber. The side near the feed inlet is the spray chamber, and the side near the feed inlet is the soaking chamber. The height of the partition is below the feed outlet and the feed inlet. The pipeline spray structure is set on one side of the spray chamber.

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