A diaphragm washing inlet box

Abstract

This utility model relates to a separator washing inlet box in the field of battery separator technology. It includes a box body with an internal cavity for conducting separator material. The box body has an outlet and an inlet on its two ends, respectively. A rotatable first transmission roller is provided on the side of the internal cavity near the outlet and inlet, and a rotatable second transmission roller is provided at the bottom of the internal cavity. A cleaning mechanism is provided between the second transmission roller and the first transmission roller near the outlet. The cleaning mechanism includes a first and a second contact beam, both with scrapers along their edges. The scrapers of the first and second contact beams are arranged in a staggered pattern, and the first and second contact beams are symmetrical in the vertical direction. During separator transmission, the scrapers continuously remove impurities from both ends of the separator downwards, ensuring that the separator remains clean when entering the washing tank or washing box.

Description

Technical Field

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

[0002] The battery separator is a membrane material placed between the positive and negative electrodes of a battery. It is a very critical part of the battery and has a direct impact on battery safety and cost. Its main functions are to isolate the positive and negative electrodes and prevent electrons in the battery from passing through freely, while allowing ions in the electrolyte to pass freely between the positive and negative electrodes.

[0003] In current diaphragm manufacturing processes, dichloromethane is typically used to clean the diaphragm. According to existing Chinese invention patent application CN113414175A, a large-format diaphragm washing production line and its washing method are disclosed. The line includes an inlet floating roller group, a sealing tank, multiple washing tanks, a desiccant tank, and a drying tank arranged sequentially. The inlet floating roller group includes an inlet drive seat, within which a floating roller and a counterweight roller connected to the floating roller are slidably mounted. The diaphragm is wound around the bottom of the floating roller. The top of the sealing tank has a first port and a second port. The sealing tank contains a sealing partition and washing liquid. The bottom end of the sealing partition is immersed in the washing liquid and spaced apart from the sealing tank. The sealing partition divides the sealing tank into a left sealing cavity and a right sealing cavity. A sealing liquid is applied to the washing liquid in the left sealing cavity. The beneficial effects of this invention are: the floating roller can adjust the tension of the diaphragm, preventing wrinkles, folds, or even breakage, avoiding waste of raw materials, improving production efficiency, reducing production costs, and facilitating the production of large-format diaphragms; the sealing tank seals the washing liquid, improving safety.

[0004] However, large-format battery separators generally have some impurities on their surface during winding. The existing separator washing production line cannot remove dust and other impurities from the separator surface, resulting in incomplete cleaning during dichloromethane washing and affecting quality. Therefore, there is an urgent need to develop a separator washing inlet box to meet practical application requirements. Utility Model Content

[0005] The purpose of this invention is to provide a diaphragm washing inlet box to solve the defect of existing diaphragm washing production lines that cannot remove dust and other impurities from the surface of battery diaphragms, resulting in the diaphragms not being cleaned properly during dichloromethane cleaning and affecting quality.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A diaphragm washing inlet box includes a box body. The interior of the box body is an inner cavity for conducting diaphragm material. The two end faces of the box body are respectively provided with a discharge port and a feed port. A rotatable first transmission roller is provided on the side of the inner cavity near the discharge port and the feed port. A rotatable second transmission roller is provided at the bottom of the inner cavity. A cleaning mechanism is provided between the second transmission roller and the first transmission roller near the discharge port. The cleaning mechanism includes a first abutting beam and a second abutting beam. Scrapers are provided on the edges of the first abutting beam and the second abutting beam. The scrapers of the first abutting beam and the second abutting beam are distributed in an alternating structure. The first abutting beam and the second abutting beam are symmetrical in the vertical direction.

[0007] As a further embodiment of the above description, both the ends of the first and second abutting beams are provided with movable components, and the first and second abutting beams are rotatably connected to the inner wall of the cavity through the movable components.

[0008] As a further embodiment of the above description, the movable component includes a bearing and a swing arm. The bearing is rotatably embedded in the inner wall of the housing. One end of the swing arm is fixedly connected to the center of the bearing, and the other end of the swing arm is fixedly connected to the first abutting beam and the second abutting beam, respectively.

[0009] As a further embodiment of the above description, an antistatic mechanism is provided between the second transmission roller and the first transmission roller near the feed inlet. The antistatic mechanism includes a blower and an air supply pipe. One end of the air supply pipe is connected to the end face of the housing body near the feed inlet, and the other end of the air supply pipe is connected to the blower. The blower is connected to the inner cavity through the air supply pipe.

[0010] As a further embodiment of the above description, an air guide groove is provided on the inner wall of the inner cavity near the air supply duct. The air guide groove has a hollow structure, and the opening of the air supply duct is connected to the interior of the air guide groove. Several through holes are provided on the top and bottom surfaces of the air guide box.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: a first transmission roller and a second transmission roller are provided inside the box to continuously drive the diaphragm, so that the large-format diaphragm can be continuously unfolded inside the box. At the same time, two first and second abutting beams with scrapers are provided between the second transmission roller and the first transmission roller near the discharge port. When the diaphragm is driven, the scrapers continuously remove impurities from both ends of the diaphragm downwards, ensuring that the diaphragm remains clean when it enters the washing tank or washing box. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of a diaphragm washing inlet box as described in this embodiment; Figure 2 This is a front view of the diaphragm washing inlet box described in this embodiment; Figure 3 for Figure 2 A schematic cross-sectional view of the structure along the A-A1 direction; Figure 4 This is a schematic diagram of the internal structure of a diaphragm washing inlet box as described in this embodiment. Figure 5 for Figure 4 A magnified schematic diagram of the partial structure of B in the diagram; In the diagram: 1-box body, 11-inner cavity, 2-outlet, 3-inlet, 41-first drive roller, 42-second drive roller, 5-impurity removal mechanism, 51-first contact beam, 52-second contact beam, 53-scraper, 54-bearing, 55-swing arm, 6-static elimination mechanism, 61-blower, 62-air supply duct, 7-air guide box, 71-through hole. Detailed Implementation

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0014] For this embodiment, please refer to Figures 1-5 The specific implementation of the diaphragm washing inlet box includes a box body 1. The interior of the box body 1 is an inner cavity 11 for conducting diaphragm material. The two ends of the box body 1 are respectively provided with a discharge port 2 and a feed port 3. The inner cavity 11 is provided with a rotatable first transmission roller 41 on the side near the discharge port 2 and the feed port 3. The bottom of the inner cavity 11 is provided with a rotatable second transmission roller 42. A cleaning mechanism 5 is provided between the second transmission roller 42 and the first transmission roller 41 on the side near the discharge port 2. The cleaning mechanism 5 includes a first abutting beam 51 and a second abutting beam 52. The edges of the first abutting beam 51 and the second abutting beam 52 are provided with scrapers 53. The scrapers 53 of the first abutting beam 51 and the second abutting beam 52 are distributed in an interlaced structure. The first abutting beam 51 and the second abutting beam are symmetrical in the vertical direction.

[0015] Inside the housing 1, there are first drive rollers 41 and second drive rollers 42 that can continuously drive the diaphragm, so that the large-format diaphragm can be continuously unfolded inside the housing 1. At the same time, there are two first abutting beams 51 and second abutting beams 52 with scrapers 53 between the second drive roller 42 and the first drive roller 41 near the discharge port 2. When the diaphragm is driven, the scrapers 53 continuously remove impurities from both ends of the diaphragm downwards, ensuring that the diaphragm remains clean when it enters the washing tank or washing box.

[0016] Preferably, such as Figure 3 As shown, both ends of the first abutting beam 51 and the second abutting beam 52 are provided with movable components. The first abutting beam 51 and the second abutting beam 52 are rotatably connected to the inner wall of the inner cavity 11 through the movable components. The movable components include a bearing 54 and a swing arm 55. The bearing 54 is rotatably embedded in the inner wall of the housing 1. One end of the swing arm 55 is fixedly connected to the center of the bearing 54, and the other end of the swing arm 55 is fixedly connected to the first abutting beam 51 and the second abutting beam 52 respectively. By rotating the bearing 54, the angle of the swing arm 55 can be adjusted, thereby adjusting the depth of the overlap of the scrapers 53 between the first abutting beam 51 and the second abutting beam 52, and thus adjusting the tension between the diaphragm and the scrapers 53.

[0017] Preferably, such as Figure 1 , Figure 4 and Figure 5 As shown, an antistatic mechanism 6 is provided between the second transmission roller 42 and the first transmission roller 41 near the feed inlet 3. The antistatic mechanism 6 includes a blower 61 and an air supply pipe 62. One end of the air supply pipe 62 is connected to the end face of the housing 1 near the feed inlet 3, and the other end of the air supply pipe 62 is connected to the blower 61. The blower 61 is connected to the inner cavity 11 through the air supply pipe 62. An air guide groove is provided on the inner wall of the inner cavity 11 near the air supply pipe 62. The air guide groove has a hollow structure. The opening of the air supply pipe 62 is connected to the interior of the air guide groove. Several through holes 71 are opened on the top and bottom surfaces of the air guide box 7. During the winding process of the large-format diaphragm, static electricity is generated. The blower 61 delivers air carrying negative ions along the air supply duct 62 into the air duct, and then guides the air evenly to the upper and lower ends of the inner cavity 11 through the through holes 71 opened on the top and bottom ends of the air guide box 7. This allows the negative ions to adsorb and neutralize the charged particles in the large-format diaphragm, reducing the generation of static electricity.

[0018] 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 wash inlet box characterized by: The device includes a housing body, the interior of which is an inner cavity for conducting diaphragm material. A discharge port and a feed port are respectively opened on both ends of the housing body. A rotatable first transmission roller is provided on the side of the inner cavity near the discharge port and the feed port. A rotatable second transmission roller is provided at the bottom of the inner cavity. A cleaning mechanism is provided between the second transmission roller and the first transmission roller near the discharge port. The cleaning mechanism includes a first and a second contact beam. Scrapers are provided along the edges of both the first and second contact beams. The scrapers of the first and second contact beams are distributed in an alternating structure, and the first and second contact beams are symmetrical in the vertical direction.

2. A diaphragm wash inlet box according to claim 1, characterized in that: The ends of the first and second abutting beams are each provided with movable components, and the first and second abutting beams are rotatably connected to the inner wall of the cavity through the movable components.

3. A diaphragm wash inlet box according to claim 2, characterised in that: The movable component includes a bearing and a swing arm. The bearing is rotatably embedded in the inner wall of the housing. One end of the swing arm is fixedly connected to the center of the bearing, and the other end of the swing arm is fixedly connected to the first abutting beam and the second abutting beam, respectively.

4. A diaphragm wash inlet box according to any one of claims 1 to 3, characterised in that: An antistatic mechanism is provided between the second drive roller and the first drive roller near the feed inlet. The antistatic mechanism includes a blower and an air supply pipe. One end of the air supply pipe is connected to the end face of the box body near the feed inlet, and the other end of the air supply pipe is connected to the blower. The blower is connected to the inner cavity through the air supply pipe.

5. A diaphragm wash inlet box according to claim 4, characterised in that: The inner wall of the inner cavity near the air supply duct is provided with an air guide channel. The air guide channel has a hollow structure, and the air supply duct opening is connected to the interior of the air guide channel. Several through holes are opened on the top and bottom surfaces of the air guide box.

Images