Diaphragm extraction equipment

Abstract

The utility model provides diaphragm extraction equipment which comprises an extraction tank, a liquid removal tank, a drying tank and a feeding track sequentially passing through the extraction tank, the liquid removal tank and the drying tank, the feeding track is provided with a chain clamp, and the chain clamp is used for clamping a diaphragm from the edge of the diaphragm. A first driving device in transmission connection with the chain clamp is arranged at the position, close to an inlet of the extraction tank, of the feeding track, a second driving device in transmission connection with the chain clamp is arranged at the position, close to an outlet of the drying tank, of the feeding track, the first driving device is used for enabling the chain clamp to clamp a diaphragm, and the second driving device is used for separating the chain clamp from the diaphragm; and the first driving device and the second driving device are configured to drive the chain clamp to drive the diaphragm to sequentially pass through the extraction tank, the liquid removal tank and the drying tank along the feeding track. In the moving direction of the chain clamp, a clamp opening device, a liquid removing roller assembly and a clamp closing device are sequentially arranged in the liquid removing tank; the clamp opening device is used for separating the chain clamp from the diaphragm, the liquid removing roller assembly is used for extruding the diaphragm, and the clamp closing device is used for enabling the chain clamp to clamp the diaphragm.

Description

Technical Field

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

[0002] The manufacturing process of battery diaphragms is divided into dry and wet processes. During the wet diaphragm manufacturing process, pore-forming agents need to be added to the raw materials. The pore-forming agents are extracted from the diaphragm through extraction with an extracting liquid, and then the diaphragm is dried. Traditional diaphragm extraction equipment mainly adopts a transition roller structure and a constant speed control system. The system can only match the tension and speed fluctuations caused by the shrinkage during the diaphragm extraction process by increasing the speed ratio, which makes the tension in the extraction tank and the drying tank very large, which has a great impact on the diaphragm. The machining accuracy requirements for the roller are high, and the deformation and corrosion resistance requirements of the roller are high. It usually needs to be matched with a high-precision drive to meet the current needs of practical diaphragms, which invisibly increases the manufacturing cost of the equipment.

[0003] In addition, after the extraction is completed, the residual extract on the diaphragm needs to be removed before drying. A liquid removal roller needs to be set between the extraction tank and the drying tank to squeeze and remove the residual extract on the diaphragm. Therefore, rollers are usually used in the drying box section. However, rollers are prone to scratches and wrinkles in the process. Utility Model Content

[0004] The purpose of the present application is to provide a membrane extraction device to reduce the possibility of scratches and wrinkles on the membrane during the production process.

[0005] The embodiment of the present application is implemented as follows:

[0006] In a first aspect, an embodiment of the present application provides a diaphragm extraction device, comprising an extraction tank, a liquid removal tank, and a drying tank arranged in sequence, and a feeding track passing through the extraction tank, the liquid removal tank and the drying tank in sequence, wherein the feeding track is provided with a chain clamp, and the chain clamp is used to clamp the diaphragm from the edge of the diaphragm.

[0007] A first driving device connected to the chain clamp is disposed at a position of the feeding track near the entrance of the extraction tank, and a second driving device connected to the chain clamp is disposed at a position of the feeding track near the exit of the drying tank. The first driving device is used to enable the chain clamp to clamp the diaphragm, and the second driving device is used to separate the chain clamp from the diaphragm. The first driving device and the second driving device are configured to drive the chain clamp to drive the diaphragm to pass through the extraction tank, the liquid removal tank and the drying tank in sequence along the feeding track.

[0008] In the movement direction of the chain clamp, a clamp opener, a liquid removal roller assembly and a clamp closer are sequentially arranged in the liquid removal tank; the clamp opener is used to separate the chain clamp from the diaphragm, the liquid removal roller assembly is used to squeeze the diaphragm, and the clamp closer is used to enable the chain clamp to clamp the diaphragm.

[0009] In the above technical solution, a chain clamp is used to clamp the edge of the diaphragm, and the chain clamp and the feeding track are used to make the diaphragm pass through the extraction tank, the liquid removal tank and the drying tank in sequence. Compared with the prior art method of using rollers to realize the transmission of the diaphragm in the extraction tank, the above technical solution uses chain clamps for transmission. On the one hand, it can effectively control the constant tension during the extraction and drying process, thereby reducing the impact on the final product, and the diaphragm is not prone to appearance problems such as scratches and wrinkles; on the other hand, the diaphragm is transmitted by connection, and only the edge of the diaphragm is clamped. Any damage to the diaphragm is also only at the edge of the diaphragm. By cutting off the edge of the diaphragm, the adverse effects of the connected transmission method on the diaphragm can be eliminated, which is compared with the transmission by rollers. The chain clamp is used for transmission, and the contact position with the diaphragm is small, and the scope of damage to the diaphragm is also smaller; further, a clamp opener, a liquid removal roller assembly and a clamp closer are arranged in the liquid removal tank to realize liquid removal before drying, thereby improving the drying effect and solving the problem that the diaphragm cannot be squeezed out when the chain clamp is used to transmit the diaphragm. At the same time, the chain clamp can also be used to transmit the diaphragm in the drying tank to ensure constant tension; at the same time, since there are no rollers in the extraction tank and the drying tank, the problems of roller corrosion and roller deformation are solved. When an abnormality occurs, only the broken film in the extraction tank and the drying tank needs to be cleaned, and the processing time is short.

[0010] In combination with the first aspect, in some optional embodiments, an inlet traction device and an outlet traction device are further included, in the movement direction of the diaphragm, the first driving device is located between the inlet traction device and the inlet of the extraction tank, and the second driving device is located between the outlet of the drying tank and the outlet traction device;

[0011] The inlet traction device is used to deliver the diaphragm into the first driving device; the outlet traction device is used to pull the diaphragm out of the second driving device.

[0012] In combination with the first aspect, in some optional embodiments, the inlet traction device includes a first vacuum adsorption roller; the first vacuum adsorption roller is connected to a vacuum suction component so that the diaphragm is adsorbed on the surface of the first vacuum adsorption roller; and / or the outlet traction device includes a second vacuum adsorption roller; the second vacuum adsorption roller is connected to a vacuum suction component so that the diaphragm is adsorbed on the surface of the second vacuum adsorption roller.

[0013] In the above technical solution, by adsorbing the diaphragm on the surfaces of the first vacuum adsorption roller and the second vacuum adsorption roller, the tension can be cut off and the tension of the diaphragm extraction and drying sections can be re-established.

[0014] In combination with the first aspect, in some optional embodiments, the inlet traction device and / or the outlet traction device is provided with a tension balancing assembly, and the tension balancing assembly includes a sensor for detecting the tension of the diaphragm, a swingable swing roller component, and a driving member for driving the swing roller component to move to adjust the diaphragm tension, the driving member is connected to the sensor signal, and the diaphragm passes through the sensor and the swing roller component in sequence.

[0015] In the above technical solution, a sensor is provided to monitor the tension of the diaphragm, and the swing roller component is driven to move according to the change of the diaphragm tension to adjust the diaphragm tension, thereby offsetting the diaphragm tension fluctuations during the production process, thereby improving product quality.

[0016] In combination with the first aspect, in some optional embodiments, the swing roller component includes a swing arm and a swing roller, the two ends of the swing arm are respectively a fixed end and a free end, the fixed end is provided with a potentiometer to detect the swing angle of the swing arm component, the potentiometer is connected to the drive component signal, and the free end is provided with the swing roller.

[0017] In the above technical solution, the swing angle of the swing arm component can be monitored by the potentiometer, thereby achieving a more accurate change in the tension of the diaphragm to ensure constant tension.

[0018] In combination with the first aspect, in some optional embodiments, the swing arm is provided with a slide groove, the driving member has an output end capable of linear motion, and the output end is rotatably connected to a roller that is restricted in the slide groove for rolling.

[0019] In combination with the first aspect, in some optional embodiments, the liquid removal roller assembly includes a first pressure roller and a second pressure roller that are arranged opposite to each other, and the first pressure roller and the second pressure roller are used to contact the surface of the diaphragm from both sides of the diaphragm respectively to remove the extraction liquid on the diaphragm by squeezing.

[0020] In the above technical solution, the first pressing roller and the second pressing roller are used to squeeze the diaphragm from both sides of the diaphragm to remove the extract on the diaphragm, which can better remove the extract and improve the drying effect.

[0021] In combination with the first aspect, in some optional embodiments, heating plates are arranged at intervals in the drying tank, and the feeding track is configured so that the chain clamp drives the diaphragm to pass between every two heating plates in sequence along an S-shaped route.

[0022] In the above technical solution, by making the diaphragm pass between every two heating plates in sequence along an S-shaped route, on the one hand, the diaphragm can be heated from both sides at the same time; on the other hand, the movement path of the diaphragm in the drying tank can be increased to reduce the space occupied by the drying tank.

[0023] In combination with the first aspect, in some embodiments, a plurality of exhaust ports are disposed at the bottom of the drying tank, and the exhaust ports are connected to exhaust fans.

[0024] In the above technical solution, by providing the exhaust port and the exhaust fan, the gas in the drying tank can be discharged in a directional manner, and the air flow in the drying tank can be accelerated to increase the drying speed of the diaphragm.

[0025] In combination with the first aspect, in some embodiments, the two ends of the feed track are connected by a return track, so that the chain clamp at the end of the feed track close to the second drive device returns to the end of the feed track close to the first drive device through the return track, so that the chain clamp completes the cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic diagram of a membrane extraction device provided in an embodiment of the present application;

[0028] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0029] Figure 3 A schematic diagram of the structure of a tension balancing assembly provided in an embodiment of the present application.

[0030] Icons: 100-extraction tank; 200-deliquid removal tank; 210-clamp opener; 220-deliquid removal roller assembly; 221-first pressing roller; 222-second pressing roller; 230-clamp closer; 300-drying tank; 310-heating plate; 320-exhaust port; 330-exhaust fan; 410-feeding track; 411-chain clamp; 420-return track; 510-first driving device; 520-second driving device; 600-diaphragm; 700 - inlet traction device; 710 - first vacuum adsorption roller; 720 - first tension balancing assembly; 730 - first power roller; 800 - outlet traction device; 810 - second vacuum adsorption roller; 820 - second tension balancing assembly; 830 - second power roller; 900 - tension balancing assembly; 910 - swing roller component; 911 - swing arm; 9111 - slide; 912 - swing roller; 913 - potentiometer; 920 - drive member; 921 - roller. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] In the description of this application, it should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0035] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only 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] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it 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, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] The present application provides a membrane extraction device, such as Figure 1 As shown, it includes an extraction tank 100, a liquid removal tank 200 and a drying tank 300 arranged in sequence. During the production process, the diaphragm 600 passes through the extraction tank 100, the liquid removal tank 200 and the drying tank 300 in sequence; an extracting liquid is arranged in the extraction tank 100 to extract the pore-forming agent in the diaphragm 600 from the diaphragm 600; then the diaphragm 600 enters the liquid removal tank 200 to separate the extracting liquid adhering to the diaphragm 600 by physical means; finally, the diaphragm 600 enters the drying tank 300 to dry the diaphragm 600. In order to prevent the volatilized extracting liquid from causing pollution during the drying process, an exhaust port 320 is also arranged at the bottom of the drying tank 300, and an exhaust fan 330 is connected to the exhaust port 320 through a pipeline to discharge the gas in the drying tank 300. Further, the exhaust fan 330 is connected to an environmental protection device through a pipeline to treat the gas.

[0038] like Figure 1 As shown, in the present application, a feeding track 410 is provided to enable the membrane 600 to move along the extraction tank 100, the liquid removal tank 200 and the drying tank 300. It is not difficult to understand that the feeding track 410 in the present application is distributed on both sides of the width direction of the membrane 600, and the feeding track 410 is provided with a chain clamp 411, which can move along the feeding track 410, and at the same time, the chain clamp 411 is used to clamp the membrane 600 from both sides of the membrane 600. Compared with the existing method of using rollers to transport the diaphragm 600, the present application uses a chain clamp 411 to clamp the diaphragm 600 and realize the transmission of the diaphragm 600. The contact area with the diaphragm 600 is small, which can effectively prevent the diaphragm 600 from being scratched, wrinkled, and other problems; and the position where the diaphragm 600 is damaged is basically located on both sides of the diaphragm 600, that is, near the clamping position of the chain clamp 411. By only cutting off the edges on both sides of the diaphragm 600, the appearance problems of the diaphragm 600 such as scratches and wrinkles can be eliminated, which can reduce the loss of the diaphragm 600 and reduce production costs.

[0039] like Figure 1 As shown, in the present application, the inlet position of the extraction tank 100 is provided with a first driving device 510 and an inlet traction device 700, and further, in the moving direction of the diaphragm 600, the first driving device 510 is located between the inlet traction device 700 and the inlet of the extraction tank 100. The outlet position of the drying tank 300 is provided with a second driving device 520 and an outlet traction device 800, and further, in the moving direction of the diaphragm 600, the second driving device 520 is located between the outlet traction device 800 and the outlet of the drying tank 300. It should be easy for those skilled in the art to understand that in the moving direction of the diaphragm 600, the diaphragm 600 first passes through the inlet of the extraction tank 100 and then enters the extraction tank 100; the diaphragm 600 first enters the drying tank 300 and then leaves from the outlet of the drying tank 300.

[0040] In the present application, the inlet traction device 700 is used to feed the diaphragm 600 into the first driving device 510; the outlet traction device 800 is used to pull the diaphragm 600 out of the second driving device 520. The first driving device 510 and the second driving device 520 are both connected to the chain clamp 411 in a transmission manner. Under the drive of the first driving device 510 and the second driving device 520, the chain clamp 411 drives the diaphragm 600 to pass through the extraction tank 100, the liquid removal tank 200 and the drying tank 300 in sequence along the feeding track 410. Further, in the present application, the first driving device 510 also has a clamp closer 230 for closing the chain clamp 411 to clamp the diaphragm 600, and the second driving device 520 also has a clamp opener 210 for the chain clamp 411.

[0041] Furthermore, in the direction of movement of the chain clamp 411, the de-liquidation tank 200 is provided with a clamp opener 210, a de-liquidation roller assembly 220 and a clamp closer 230 in sequence, so as to remove the extracting liquid adhering to the diaphragm 600 after the chain clamp 411 is opened, and then the chain clamp 411 is closed by the clamp closer 230 to clamp the diaphragm 600. The clamp opener, the de-liquidation roller assembly and the clamp closer are provided in the de-liquidation tank to remove liquid before drying, improve the drying effect, solve the problem that the diaphragm cannot be de-liquidated by squeezing when the chain clamp is used to transport the diaphragm, and at the same time, the chain clamp can also be used to transport the diaphragm in the drying tank to ensure constant tension; at the same time, since there are no rollers in the extraction tank and the drying tank, the problem of roller corrosion and roller deformation is solved. When an abnormality occurs, it is only necessary to clean the broken film in the extraction tank and the drying tank, and the processing time is short.

[0042] In some embodiments of the present application, Figure 2As shown, the liquid removal roller assembly 220 includes a first pressing roller 221 and a second pressing roller 222 which are arranged opposite to each other. The axes of the first pressing roller 221 and the second pressing roller 222 are parallel to each other. The axes of the first pressing roller 221 and the second pressing roller 222 are parallel to the width direction of the diaphragm. A channel is formed between the first pressing roller 221 and the second pressing roller 222 for the diaphragm 600 to pass through. When the diaphragm 600 passes through the channel between the first pressing roller 221 and the second pressing roller 222, the first pressing roller 221 and the second pressing roller 222 contact the surface of the diaphragm 600 from both sides of the diaphragm 600, and remove the extract on the diaphragm 600 by squeezing the diaphragm 600. It should be easy to understand for those skilled in the art that the size of the channel formed between the first pressing roller 221 and the second pressing roller 222 is slightly smaller than the thickness of the diaphragm 600, so that the diaphragm 600 can pass through the channel and the extract on the surface of the diaphragm 600 can be removed.

[0043] Of course, in some other embodiments of the present application, devices with other structural forms may also be used to remove the extraction liquid adhered to the surface of the diaphragm 600 .

[0044] In some embodiments of the present application, heating plates 310 are arranged at intervals in the drying tank 300, and the diaphragm 600 passes between every two heating plates 310 in sequence along the feeding track 410 in an S-shaped route under the traction of the chain clamp 411, so as to achieve simultaneous heating of two opposite sides of the diaphragm 600. In addition, making the diaphragm 600 move along the S-shaped route can also increase the movement path of the diaphragm 600 in the drying box, so as to reduce the required size of the drying box.

[0045] Furthermore, the heating plate 310 is a plate-shaped structural member arranged vertically and multiple heating plates 310 are arranged in the horizontal direction, so that the diaphragm 600 reciprocates in the vertical direction, thereby reducing the size of the drying box in the horizontal direction. The heating plate 310 can be a hot air drying or a heat pipe drying method. In other embodiments, a drying box of other structures can also be used to dry the diaphragm 600. In other embodiments of the present application, the heating plate 310 can also be tilted.

[0046] In the present application, the feeding track 410 is used for the chain clamp 411 to clamp the diaphragm 600 and move from the first driving device 510 to the second driving device 520. The diaphragm 600 is released by the chain clamp 411 at the position of the second driving device 520, and then pulled to the subsequent workstation by the exit pulling device 800. Further, in some embodiments of the present application, the two ends of the feeding track 410 are connected by the return track 420, that is, in the movement direction of the diaphragm 600, one end of the feeding track 410 is connected to one end of the return track 420, and the other end of the feeding track 410 is connected to the other end of the return track 420. The feeding track 410 and the return track 420 are connected to form a closed loop, so that the chain clamp 411 moves from the first driving device 510 along the feeding track 410 to the second driving device 520, and then from the second driving device 520 to the first driving device 510 along the return track 420, completing the cycle of the chain clamp 411.

[0047] In the present application, in order to reduce the tension fluctuation and speed fluctuation caused by the contraction of the diaphragm 600 during the extraction to drying process, so as to make the equipment run more stably, or even to increase the running speed of the equipment, on the one hand, the inlet traction device 700 in the present application has the function of isolating the tension of the diaphragm 600 before the extraction process from the tension of the diaphragm 600 during the extraction process, and the outlet traction device 800 has the function of isolating the tension of the diaphragm 600 during the drying process from the tension of the diaphragm 600 after the extraction process; on the other hand, the present application is also provided with a tension balancing component 900 to adjust the tension of the diaphragm 600, so as to reduce the tension change of the diaphragm 600 during the movement from the extraction tank 100 to the drying tank 300. It is not difficult to understand that the diaphragm 600 in the extraction process is the diaphragm 600 located in the extraction tank 100, and the diaphragm 600 undergoes the drying process in the drying oven.

[0048] Specifically, in one embodiment of the present application, the inlet traction device 700 includes a first vacuum adsorption roller 710, and the diaphragm 600 moves to the first driving device 510 after passing through the surface of the first vacuum adsorption roller 710. Further, the first vacuum adsorption roller 710 is connected to a vacuum pumping assembly, and a negative pressure is generated on the surface of the first vacuum adsorption roller 710 by the vacuum pumping assembly, so that the diaphragm 600 is pressed against the surface of the first vacuum adsorption roller 710, so that the tension changes before and after the first vacuum adsorption roller 710 do not affect each other, thereby playing a role in isolating the tension of the diaphragm 600 before the extraction process from the tension of the diaphragm 600 during the extraction process.

[0049] In the present application, there is no limitation on the method of isolating the tension of the diaphragm 600 before the extraction process from the tension of the diaphragm 600 during the extraction process. The inlet traction device 700 may also use other means to isolate the tension of the diaphragm 600. Correspondingly, the outlet traction device 800 may also use the same means or different means to isolate the tension of the diaphragm 600. Exemplarily, the outlet traction device 800 uses the same means to isolate the tension of the diaphragm 600. In one embodiment, the outlet traction device 800 includes a second vacuum adsorption roller 810. The dried diaphragm 600 passes through the surface of the second vacuum adsorption roller 810. The second vacuum adsorption roller 810 is connected to a vacuum pumping component. The vacuum pumping component generates negative pressure on the surface of the second vacuum adsorption roller 810, so that the diaphragm 600 is pressed against the surface of the second vacuum adsorption roller 810. Therefore, the tension changes before and after the second vacuum adsorption roller 810 do not affect each other, thereby isolating the tension of the diaphragm 600 during the drying process from the tension of the diaphragm 600 after the drying process.

[0050] It should not be difficult for those skilled in the art to understand that in the present application, in the movement direction of the diaphragm 600, the tension balancing assembly 900 is disposed between the first vacuum adsorption roller 710 and the second vacuum adsorption roller 810 to adjust the tension of the diaphragm 600 isolated by the first vacuum adsorption roller 710 and the second vacuum adsorption roller 810.

[0051] In one embodiment of the present application, the tension balance assembly 900 includes a sensor for monitoring the tension of the diaphragm 600, a swing roller component 910 that can be swingably arranged, and a driving member 920 that drives the swing roller component 910 to move to adjust the tension of the diaphragm 600. Further, the sensor is connected to the driving member 920 by signal, so that the driving member 920 drives the swing roller component 910 according to the detection result of the sensor to automatically adjust the tension of the diaphragm 600. Further, the sensor can be installed on the roller that the diaphragm 600 is to pass through, preferably installed on the roller adjacent to the swing roller component 910.

[0052] Further, in one embodiment of the present application, Figure 3As shown, the swing roller component 910 includes a swing arm 911 and a swing roller 912, and the driving member 920 is connected to the swing arm 911. One end of the swing arm 911 is a fixed end and the other end is a free end. The fixed end of the swing arm 911 is provided with a potentiometer 913 to detect the swing angle of the swing arm 911 component. The potentiometer 913 is connected to the driving member 920 signal to feedback the swing angle of the swing arm 911 to the driving member 920. That is, the fixed end of the swing arm 911 is only fixed in position and cannot be moved, but can be rotated. The free end of the swing arm 911 is connected to the swing roller 912. When the diaphragm 600 passes through the swing roller component 910, it passes through the circumference of the swing roller 912. The position of the swing roller 912 is changed by the rotation of the swing arm 911, thereby realizing the change of the tension of the diaphragm 600. That is, in this embodiment, the swing arm 911 is driven to rotate by the driving member 920 to change the position of the swing roller 912, thereby adjusting the tension of the diaphragm 600. In the present application, there is no specific limitation on the structure of the swing roller component 910 , as long as the tension of the diaphragm 600 can be changed by the movement of the swing roller component 910 .

[0053] Further, if Figure 3 As shown, a slide groove 9111 is provided on the swing arm 911, and the driving member 920 has an output end that can move linearly, and the output end is connected to a roller 921 that is restricted to move in the slide groove 9111. It is not difficult to understand that as long as the extension direction of the slide groove 9111 is not parallel to the movement direction of the output end, the roller 921 can push the swing arm 911 to rotate through the movement of the output end. Preferably, the movement of the roller 921 in the slide groove 9111 is rolling, so as to reduce the friction force when the roller 921 moves relative to the swing arm 911.

[0054] In the present application, there is no specific limitation on the number and location of the tension balancing assembly 900. In a preferred embodiment, the entrance traction device 700 and the exit traction device 800 are both provided with the tension balancing assembly 900, which are respectively referred to as the first tension balancing assembly 720 and the second tension balancing assembly 820. The first tension balancing assembly 720 is provided between the first vacuum adsorption roller 710 and the first driving device 510, and the second tension balancing assembly 820 is provided between the second vacuum adsorption roller 810 and the second driving device 520. Of course, in some other embodiments, only the first tension balancing assembly 720 or the second tension balancing assembly 820 may be provided, that is, only the first tension balancing assembly 720 is provided in the entrance traction device 700 or the second tension balancing assembly 820 is provided in the exit traction device 800.

[0055] Further, in the above-mentioned embodiment where the inlet traction device 700 is provided with the first tension balancing assembly 720, the sensor in the first tension balancing assembly 720 can be installed on the roller in the inlet traction device 700. Preferably, the sensor is installed on the first power roller 730 in the inlet traction device 700 for providing power for the movement of the diaphragm 600. It is not difficult to understand that the diaphragm 600 first passes through the first vacuum adsorption roller 710 and then passes through the second power roller 830. Correspondingly, in the embodiment where the outlet traction device 800 is provided with the second tension balancing assembly 820, the sensor in the second tension balancing assembly 820 can be installed on the second power roller 830 in the outlet traction device 800, wherein the second power roller 830 provides power for the movement of the diaphragm 600.

[0056] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A membrane extraction device, characterized in that: It includes an extraction tank, a liquid removal tank, a drying tank, and a feeding track which passes through the extraction tank, the liquid removal tank, and the drying tank in sequence, wherein the feeding track is provided with a chain clamp, and the chain clamp is used to clamp the diaphragm from the edge of the diaphragm; A first driving device connected to the chain clamp is disposed at a position of the feeding track near the entrance of the extraction tank, and a second driving device connected to the chain clamp is disposed at a position of the feeding track near the exit of the drying tank, wherein the first driving device is used to enable the chain clamp to clamp the diaphragm, and the second driving device is used to separate the chain clamp from the diaphragm; the first driving device and the second driving device are configured to drive the chain clamp to drive the diaphragm to pass through the extraction tank, the deliquescence tank and the drying tank in sequence along the feeding track; In the movement direction of the chain clamp, a clamp opener, a liquid removal roller assembly and a clamp closer are sequentially arranged in the liquid removal tank; the clamp opener is used to separate the chain clamp from the diaphragm, the liquid removal roller assembly is used to squeeze the diaphragm, and the clamp closer is used to enable the chain clamp to clamp the diaphragm.

2. The membrane extraction device according to claim 1, characterized in that: It also includes an inlet traction device and an outlet traction device. In the movement direction of the diaphragm, the first driving device is located between the inlet traction device and the inlet of the extraction tank, and the second driving device is located between the outlet of the drying tank and the outlet traction device. The inlet traction device is used to deliver the diaphragm into the first driving device; The outlet pulling device is used to pull out the diaphragm of the second driving device.

3. The membrane extraction device according to claim 2, characterized in that: The inlet traction device comprises a first vacuum adsorption roller; the first vacuum adsorption roller is connected to a vacuum pumping assembly so that the diaphragm is adsorbed on the surface of the first vacuum adsorption roller; and / or The outlet traction device comprises a second vacuum adsorption roller; the second vacuum adsorption roller is connected with a vacuum pumping assembly so that the diaphragm is adsorbed on the surface of the second vacuum adsorption roller.

4. The membrane extraction device according to claim 3, characterized in that: The inlet traction device and / or the outlet traction device is provided with a tension balancing assembly, which includes a sensor for detecting the tension of the diaphragm, a swingable swing roller component, and a driving member for driving the swing roller component to move to adjust the diaphragm tension, and the driving member is connected to the sensor signal.

5. The membrane extraction device according to claim 4, characterized in that: The swing roller component includes a swing arm and a swing roller. The two ends of the swing arm are respectively a fixed end and a free end. The fixed end is provided with a potentiometer to detect the swing angle of the swing arm. The potentiometer is connected to the drive component signal. The free end is provided with the swing roller.

6. The membrane extraction device according to claim 5, characterized in that: The swing arm is provided with a slide groove, and the driving member has an output end capable of linear motion, and the output end is rotatably connected to a roller restricted in the slide groove for rolling.

7. The membrane extraction device according to claim 1, characterized in that: The liquid removal roller assembly comprises a first pressing roller and a second pressing roller which are arranged opposite to each other. The first pressing roller and the second pressing roller are used to contact the surface of the diaphragm from both sides of the diaphragm respectively to remove the extraction liquid on the diaphragm by squeezing.

8. The membrane extraction device according to claim 1, characterized in that: The drying tank is provided with heating plates distributed at intervals, and the feeding track is configured so that the chain clamp drives the diaphragm to pass between every two heating plates in sequence along an S-shaped route.

9. The membrane extraction device according to claim 1, characterized in that: A plurality of air outlets are arranged at the bottom of the drying tank, and the air outlets are connected to exhaust fans.

10. The membrane extraction device according to claim 1, characterized in that: The two ends of the feeding track are connected by a return track, so that the chain clamp returns to the end of the feeding track close to the first driving device through the return track at the end of the feeding track close to the second driving device, so that the chain clamp completes the cycle.

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