Liquid scraping device for extracting battery diaphragm

Abstract

The liquid scraping device is installed in an extraction box used for extracting the battery diaphragm, the liquid scraping devices are arranged on one side of a moving path of the battery diaphragm, and each liquid scraping device comprises a liquid scraping roller, a driving part in transmission connection with the liquid scraping roller and adjusting assemblies installed at the two ends of the liquid scraping roller. The liquid scraping roller can rotate around the axis of the liquid scraping roller and can be close to and away from the battery diaphragm in the moving path, a through hole for exposing the end of the liquid scraping roller is formed in the extraction box, the driving part is used for driving the liquid scraping roller to rotate around the axis of the liquid scraping roller, and the adjusting assemblies are connected between the extraction box and the liquid scraping roller. The adjusting assemblies are used for adjusting the distance between the liquid scraping roller and the surface of the battery diaphragm in the moving path, and at least part of each adjusting assembly covers a gap between the liquid scraping roller and the extraction box at the through hole; the liquid scraping device is simple in structure and convenient to operate, the white oil quantity and the liquid carrying quantity on the surface of the battery diaphragm are effectively controlled, and the extraction efficiency and the drying efficiency are improved.

Description

Technical Field

[0001] The present application relates to the technical field of lithium battery diaphragm production equipment, and in particular to a scraping device for battery diaphragm extraction. Background Art

[0002] At present, the traditional lithium battery diaphragm industry mostly adopts fixed scraping rollers, or no scraping rollers, which leads to a large amount of extraction liquid wasted in the subsequent extraction of the membrane. Since the speed of the scraping roller is uncontrollable, the amount of white oil on the membrane surface cannot be effectively controlled, which increases the difficulty of subsequent extraction. Summary of the invention

[0003] In order to solve the above technical problems, the purpose of the present application is to provide a scraping device for battery diaphragm extraction.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: a scraping device for extracting battery diaphragms, installed in an extraction box for extracting the battery diaphragms, the scraping device is arranged on one side of the moving path of the battery diaphragms, each of the scraping devices includes a scraping roller, a driving member connected to the scraping roller, and an adjustment component installed at both ends of the scraping roller, the scraping roller is configured to be able to rotate around its own axis and to move closer to and away from the battery diaphragms in the moving path, the extraction box is provided with a through hole exposing the end of the scraping roller, the driving member is used to drive the scraping roller to rotate around its own axis, each of the adjustment components is connected between the extraction box and the scraping roller, and is used to adjust the distance between the scraping roller and the surface of the battery diaphragm in the moving path, and each of the adjustment components at least partially covers the gap between the scraping roller and the extraction box at the through hole.

[0005] In the above technical scheme, it is further preferred that the adjustment assembly includes an inner lining plate, a sealing gasket, a sliding bearing seat, a bearing and at least one adjustment component, and the inner lining plate, the sealing gasket and the sliding bearing seat are arranged in sequence from the inside to the outside, and the inner lining plate is installed on the outer surface of the extraction box, and the sliding bearing seat is configured to be movable along the radial direction of the scraping roller relative to the inner lining plate, and the end of the scraping roller is rotatably arranged in the sliding bearing seat through the bearing, and the sliding bearing seat is provided with a notch for transmission connection between the scraping roller and the driving member, and each of the adjustment components is connected between the extraction box and the sliding bearing seat to drive the sliding bearing seat to move.

[0006] In the above technical solution, it is further preferred that the adjustment component also includes a pair of sealing rings, which are sealed at the junction of the scraping roller and the bearing, one sealing ring is located on the outside of the bearing, and the other sealing ring is located on the inside of the bearing.

[0007] In the above technical solution, it is further preferred that an end portion of each of the scraping rollers away from the driving member is provided with an end cover fixedly mounted on the sliding bearing seat, and the end cover covers the notch on the sliding bearing seat.

[0008] In the above technical solution, it is further preferred that the sealing gasket is made of polytetrafluoroethylene.

[0009] In the above technical solution, it is further preferred that the driving member is a servo motor.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] The scraping device of the present application has a simple structure and is easy to operate. It can adjust the distance between the scraping roller and the battery diaphragm, effectively control the amount of white oil and liquid on the surface of the battery diaphragm, reduce the consumption of the extraction liquid, ensure the purity of the extraction liquid, and improve the extraction efficiency and drying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic structural diagram of a liquid scraping device provided in an embodiment of the present application installed in an extraction module.

[0013] Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure of the wiper device.

[0014] Figure 3 for Figure 2 A local enlarged schematic diagram of point A in the middle.

[0015] Figure 4 for Figure 2 Side view of the wiper device in FIG.

[0016] Figure 5 For along Figure 4 Sectional view taken along line BB in FIG.

[0017] Figure 6 for Figure 5 A partial enlarged schematic diagram of point C in the middle.

[0018] Among them: 10, scraping device; 1, scraping roller; 2, driving member; 3, adjusting assembly; 31, inner lining plate; 32, sealing gasket; 321, opening; 33, sliding bearing seat; 34, bearing; 35, adjusting component; 351, first fixed block; 352, second fixed block; 353, adjusting screw; 36, end cover; 37, sealing ring; 4, coupling; 20, extraction box; 30, battery diaphragm. DETAILED DESCRIPTION

[0019] To describe the technical content, structural features, achieved purpose and effect of the application in detail, the technical solutions in the embodiments of the application will be described below in conjunction with the drawings in the embodiments of the application. Obviously, the described embodiments are only a part of the embodiments of the application, rather than all of the embodiments. In the following description, for the purpose of explanation, many specific details are set forth to provide a detailed description of various exemplary embodiments or implementations of the invention. However, various exemplary embodiments may also be implemented without these specific details or in the case of one or more equivalent arrangements. In addition, various exemplary embodiments may be different, but not necessarily exclusive. For example, without departing from the inventive concept, the specific shape, structure and characteristics of the exemplary embodiment may be used or implemented in another exemplary embodiment.

[0020] In the following, the terms "first", "second", etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0021] In the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0022] An embodiment of the present application provides a scraping device for extracting battery diaphragms. The scraping device is installed in an extraction box used to extract the battery diaphragms, and is used to scrape off the liquid on the battery diaphragms. On the one hand, it reduces the residual white oil on the battery diaphragms and improves the extraction efficiency. On the other hand, before the battery diaphragms are transported to the downstream drying device, the liquid carried on them is reduced, the waste of extraction liquid is reduced, and the drying efficiency of the downstream drying device is improved.

[0023] like Figure 1 , 2As shown, the battery separator 30 passes through a plurality of extraction rollers in the extraction box 20 from front to back in sequence to form a moving path, and a plurality of scraping devices 10 are arranged on one side of the moving path. Each scraping device 10 comprises a scraping roller 1, a driving member 2 connected to the scraping roller 1 in a transmission manner, and an adjusting assembly 3 installed at both ends of the scraping roller 1. The scraping roller 1 is configured to be installed in the extraction box 20 so as to be able to rotate around its own axis and to be close to and away from the battery separator in the moving path; the driving member 2 is used to drive the scraping roller 1 to rotate around its own axis and to adjust the speed of the scraping roller 1 so that the speed of the scraping roller 1 is adapted to the transportation of the battery separator, thereby ensuring that the scraping roller 1 effectively scrapes the battery separator.

[0024] The two ends of the scraper roller 1 are rotatably and movably mounted on the side wall of the extraction box 20 through a pair of adjustment components 3, and a through hole is opened on the side wall of the extraction box 20 to expose the end of the scraper roller 1 for transmission connection between the end and the driving member 2. The adjustment component 3 is installed at the through hole, and at least part of the adjustment component covers the gap between the end of the corresponding scraper roller 1 and the extraction box 20 in the through hole to prevent the volatilized extract in the extraction box 20 from leaking out of the extraction box 20 from the through hole when the scraper roller 1 rotates and moves.

[0025] The driving member 2 is located outside the extraction box 20, and is connected to the end of the scraping roller 1 through a coupling 4 to drive the scraping roller 1 to rotate around its own axis and adjust the rotation speed of the scraping roller 1 under the control of the controller. In the embodiment of the present application, the driving member 2 is a servo motor that can quickly and accurately adjust the rotation speed of the scraping roller 1.

[0026] like Figure 3-6 As shown, each adjustment component 3 is connected between the extraction box 20 and the corresponding scraping roller 1, and is used to adjust the distance between the scraping roller 1 and the surface of the battery diaphragm in the moving path. Each adjustment component 3 includes an inner lining plate 31, a sealing gasket 32, a sliding bearing seat 33, a bearing 34 and a pair of adjustment components 35. The inner lining plate 31, the sealing gasket 32 ​​and the sliding bearing seat 33 are arranged in sequence from the inside to the outside on the side wall of the extraction box 20. The inner lining plate 31 is fixedly mounted on the outer surface of the extraction box 20, and the sliding bearing seat 33 is configured to be movable relative to the inner lining plate 31 along the radial direction of the scraping roller 1, so as to adjust the distance between the surface of the scraping roller 1 and the surface of the battery diaphragm.

[0027] The end of the wiper roller 1 passes through the inner lining plate 31 and the sealing gasket 32 ​​in sequence and is rotatably arranged in the sliding bearing seat 33 through the bearing 34. The sliding bearing seat 33 is provided with a notch for transmission connection between the wiper roller 1 and the driving member 2. The end where the wiper roller 1 is connected to the driving member 2 is covered by the coupling 4. The notch at the end of the wiper roller 1 away from the driving member 2 is covered by an end cover 36. The end cover 36 covers the notch and is fixedly connected to the corresponding sliding bearing seat 33 through mechanical fasteners. In order to improve the sealing effect, an end cover sealing ring is installed between the end cover 36 and the sliding bearing seat 33.

[0028] like Figure 6 As shown, the sealing gasket 32 ​​is sealed between the inner lining plate 31 and the sliding bearing seat 33 to prevent the volatilized extract from leaking from the joint between the inner lining plate 31 and the sliding bearing seat 33. The sealing gasket 32 ​​is made of polytetrafluoroethylene. The sealing gasket 32 ​​is provided with an opening 321 for the end of the scraping roller 1 to move along its own radial direction. The sliding sealing seat 33 is always covered on the outside of the opening 321 when the scraping roller 1 moves along its own radial direction. The adjustment component 3 also includes a pair of sealing rings 37, which are sealed at the joint between the scraping roller 1 and the bearing 34. One sealing ring 37 is located on the outside of the bearing 34, and the other sealing ring 37 is located on the inside of the bearing 34. The sealing of the pair of sealing rings 37 cooperates with the sealing of the sealing gasket 32 ​​to effectively prevent the volatilized extract from leaking from the joint between the adjustment component 3 and the scraping roller 1 when the scraping roller 1 moves.

[0029] like Figure 3-5 As shown, a pair of adjusting components 35 are connected between the extraction box 20 and the sliding bearing seat 33, and the sliding bearing seat 33 is driven on a straight line perpendicular to the moving path to drive the end of the scraping roller 1 to move. Each adjusting component 35 includes a first fixed block 351 fixedly connected to the extraction box 20, a second fixed block 352 fixed to the sliding bearing seat 33, and an adjusting screw 353 passing through the first fixed block 351 and the second fixed block 352 at the same time. The adjusting screw 353 is threadedly connected to the first fixed block 351 and rotatably connected to the second fixed block 352; when the adjusting screw 353 rotates around its own axis, the adjusting screw 353 can move back and forth along its own axis relative to the first fixed block 351, and drive the sliding bearing seat 33 connected to the second fixed block 352 to move, so as to drive the scraping roller 1 to move along its own radial direction. The adjusting component 35 adjusts the distance between the scraping roller 1 and the battery diaphragm. Part of the scraping device 10 is located at the upstream of the moving path of the battery diaphragm in the extraction box, which controls the thickness of the white oil on the battery diaphragm, reduces the consumption of the extraction liquid, ensures the purity of the extraction liquid, and improves the extraction efficiency; part of the scraping device 10 is located at the downstream of the moving path of the battery diaphragm in the extraction box, which reduces the amount of liquid on the battery diaphragm, avoids waste of extraction liquid, and improves the drying efficiency downstream.

[0030] An observation window is provided on the extraction box 20 , and the observation window is arranged close to the scraping device 10 . When the adjustment component 35 adjusts the distance between the scraping roller 1 and the battery separator, the size of the distance is observed through the observation window.

[0031] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present application. Without departing from the spirit and scope of the present application, the present application may have various changes and improvements, and the scope of protection required by the present application is defined by the attached claims, description and their equivalents.

Claims

1. A scraping device for battery diaphragm extraction, installed in an extraction box for extracting the battery diaphragm, characterized in that: The wiper device is arranged on one side of the moving path of the battery diaphragm, and each of the wiper devices includes a wiper roller, a driving member connected to the wiper roller, and an adjustment component installed at both ends of the wiper roller. The wiper roller is configured to rotate around its own axis and to move closer to and away from the battery diaphragm in the moving path. The extraction box is provided with a through hole exposing the end of the wiper roller. The driving member is used to drive the wiper roller to rotate around its own axis. Each of the adjustment components is connected between the extraction box and the wiper roller, and is used to adjust the distance between the wiper roller and the surface of the battery diaphragm in the moving path. Each of the adjustment components at least partially covers the gap between the wiper roller and the extraction box at the through hole.

2. The wiper device according to claim 1, characterized in that: The adjustment assembly includes an inner lining plate, a sealing gasket, a sliding bearing seat, a bearing and at least one adjustment component. The inner lining plate, the sealing gasket and the sliding bearing seat are arranged in sequence from the inside to the outside. The inner lining plate is installed on the outer surface of the extraction box. The sliding bearing seat is configured to be movable along the radial direction of the scraping roller relative to the inner lining plate. The end of the scraping roller is rotatably arranged in the sliding bearing seat through the bearing. The sliding bearing seat is provided with a notch for transmission connection between the scraping roller and the driving member. Each of the adjustment components is connected between the extraction box and the sliding bearing seat to drive the sliding bearing seat to move.

3. The wiper device according to claim 2, characterized in that: The adjustment component also includes a pair of sealing rings, which are sealed at the junction of the scraping roller and the bearing, one sealing ring is located on the outside of the bearing, and the other sealing ring is located on the inside of the bearing.

4. The wiper device according to claim 2, characterized in that: An end portion of each of the scraping rollers away from the driving member is provided with an end cover fixedly mounted on the sliding bearing seat, and the end cover covers the notch on the sliding bearing seat.

5. The wiper device according to claim 2, characterized in that: The sealing gasket is made of polytetrafluoroethylene.

6. The wiper device according to claim 1, characterized in that: The driving component is a servo motor.

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