Vacuum adsorption removal system and method for floating liquid on surface of PE diaphragm of lead-acid storage battery

Abstract

The invention relates to the technical field of PE diaphragm manufacturing, and discloses a vacuum adsorption removal system and method for floating liquid on the surface of a PE diaphragm of a lead-acid storage battery, and the vacuum adsorption removal system comprises a shell, a vacuum adsorption box body, a vacuum device and a condensation recovery device. The housing is provided with a cavity suitable for the diaphragm to pass along a first direction. The multiple vacuum adsorption box bodies are sequentially distributed in the cavity in the first direction, the vacuum adsorption box bodies are provided with cavities, adsorption holes are formed in the box walls, facing the diaphragm in the second direction, of the vacuum adsorption box bodies, gaps are reserved between the adsorption holes and the diaphragm, and the adsorption holes are communicated with the cavities. The vacuum device comprises a vacuum pump, and the vacuum pump is communicated with the cavity of the vacuum adsorption box body through a pipeline. And the condensation recovery device is arranged on a pipeline between the vacuum pump and the vacuum adsorption box body and is suitable for separating liquid and gas sucked by the vacuum adsorption box body. According to the device, the PE diaphragm and the vacuum pump can be prevented from being damaged, and the solvent floating liquid can be recycled.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of PE diaphragm manufacturing, and particularly relates to a lead-acid battery PE diaphragm surface floating liquid vacuum adsorption removal system and method. BACKGROUND

[0002] In the production process of a PE diaphragm, extraction treatment needs to be performed on the PE diaphragm. After the solvent in the extraction machine is extracted, excessive solvent (i.e. "floating liquid") is carried on the surface of the diaphragm. If the floating liquid is not effectively removed, problems such as high production cost, poor product quality, and environmental impact will be caused.

[0003] At present, the commonly used floating liquid removal methods (such as a brush type and an extrusion roller type) have the defects of easy damage to the diaphragm, low removal efficiency, and easy pollution. In addition, when the treatment liquid is a volatile liquid (such as a trichloroethylene and dichloromethane system), the traditional vacuum adsorption method will face problems such as damage of the vacuum pump caused by solvent volatilization, solvent waste, and VOCs emission. Meanwhile, in high-end diaphragm manufacturing, the atmosphere of the production environment needs to be accurately controlled.

[0004] Therefore, it is urgent to develop a non-contact, high-efficiency, and solvent-recovery floating liquid removal technology. SUMMARY

[0005] Therefore, the application provides a lead-acid battery PE diaphragm surface floating liquid vacuum adsorption removal system and method to solve the problem that the existing floating liquid removal method is easy to cause damage to the PE diaphragm and the vacuum pump.

[0006] In a first aspect, the application provides a lead-acid battery PE diaphragm surface floating liquid vacuum adsorption removal system, which comprises intersecting first and second directions and comprises: a housing provided with a cavity and suitable for allowing the diaphragm to pass along the first direction; a plurality of vacuum adsorption boxes are provided, and the plurality of vacuum adsorption boxes are sequentially distributed along the first direction in the cavity, wherein the vacuum adsorption box has a chamber, the vacuum adsorption box is provided with an adsorption hole on the box wall thereof and faces the diaphragm along the second direction, a gap is left between the adsorption hole and the diaphragm, and the adsorption hole is in communication with the chamber; a vacuum device comprising a vacuum pump, the vacuum pump is in communication with the chamber of the vacuum adsorption box through a pipeline; a condensation recovery device provided on the pipeline between the vacuum pump and the vacuum adsorption box and suitable for separating liquid and gas adsorbed by the vacuum adsorption box.

[0007] Beneficial effects: By non-contact vacuum adsorption method, the floating liquid on the surface of the diaphragm is effectively removed, avoiding damage to the diaphragm caused by physical contact. At the same time, the condensing recovery device can separate the inhaled liquid and gas, realize the preliminary recovery of the solvent, reduce the waste of the solvent and environmental pollution, and provide a basic guarantee for the green manufacturing of high-end lead-acid battery diaphragm.

[0008] In an alternative embodiment, the condensing recovery device comprises: a liquid collecting tank; a condenser and a gas-liquid separator, which are sequentially arranged on the pipeline in the direction from the vacuum adsorption box to the vacuum pump, the condenser is used to liquefy the liquid contained in the gas in the pipeline, and the gas-liquid separator comprises a liquid outlet and a gas outlet, the liquid outlet is communicated with the liquid collecting tank, and the gas outlet is communicated with the input end of the vacuum pump.

[0009] In an alternative embodiment, it further comprises: a solvent recovery device comprising a solvent recovery tank, the solvent recovery tank is communicated with the liquid collecting tank and is suitable for collecting the liquid in the liquid collecting tank.

[0010] In an alternative embodiment, the adsorption holes are arranged in a long strip structure, the adsorption holes are arranged in a slit structure, and a plurality of adsorption holes are arranged in an array on the wall of the vacuum adsorption box facing the diaphragm in the second direction.

[0011] In an alternative embodiment, the pipeline comprises: a main pipe, one end of which is communicated with the vacuum pump, and the condensing recovery device is arranged on the main pipe; a plurality of branch pipes, each of which is correspondingly arranged with one of the vacuum adsorption boxes, one end of the branch pipe is communicated with the cavity of the vacuum adsorption box, and the other end of the branch pipe is communicated with the main pipe.

[0012] In an alternative embodiment, the vacuum device further comprises: a plurality of adjusting assemblies, each of which is correspondingly arranged with one of the branch pipes, the adjusting assembly is suitable for adjusting the vacuum degree in the vacuum adsorption box, and the adjusting assembly comprises a vacuum buffer tank, a vacuum regulating valve and a vacuum gauge; wherein the vacuum degree in the vacuum adsorption box gradually increases along the passing direction, or the vacuum degree in the vacuum adsorption box gradually decreases along the passing direction.

[0013] In an alternative embodiment, the vacuum pump is provided with an air inlet end and an air outlet end, the air inlet end is communicated with the main pipe, and the air outlet end is provided with a gas purification assembly.

[0014] In an alternative embodiment, the output of the purification assembly is in communication with the solvent recovery tank.

[0015] In an alternative embodiment, further comprising: a control device electrically connected to the vacuum regulating valve, the condenser and the gas-liquid separator, respectively.

[0016] In a second aspect, the application further provides a lead-acid battery PE separator surface liquid vacuum adsorption removal method, applied to a lead-acid battery PE separator surface liquid vacuum adsorption removal system, comprising the following steps: The extracted wet separator is passed through the cavity of the shell at a constant speed; The vacuum device and the condensation recovery device are started, and the liquid and gas on the surface of the separator are sucked into the condensation recovery device through the adsorption hole at different vacuum degrees; The condenser in the condensation recovery device condenses the gas-liquid mixture, so that the solvent vapor is condensed into liquid; The condensed gas-liquid mixture is separated in the gas-liquid separator in the condensation recovery device, and the liquid solvent is recovered to the solvent recovery tank; The separated gas is transported to the solvent recovery tank by the vacuum pump in the vacuum device; The treated separator enters the subsequent drying process.

[0017] Beneficial effects: Through a systematic method, efficient and uniform removal of liquid is achieved, while recovering the solvent, protecting the equipment, reducing energy consumption, providing a complete and reliable solution for separator production, ensuring the environmental protection, safety and economy of the production process, and being suitable for large-scale industrial application. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the specific embodiments or prior art of the present application, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0019] Fig. 1 A structure diagram of a lead-acid battery PE separator surface liquid vacuum adsorption removal system according to an embodiment of the present application; Fig. 2 A structure diagram of a vacuum adsorption box according to an embodiment of the present application; Fig. 3 A structure diagram of a shell according to an embodiment of the present application; Fig. 4 A work flowchart according to an embodiment of the present application.

[0020] Explanation of reference numerals in the attached figures: 1. Outer shell; 101. Cavity; 2. Diaphragm; 3. Vacuum adsorption chamber; 301. Adsorption hole; 4. Drive roller; 5. Main pipe; 6. Branch pipe; X, the first direction; Y, the second direction. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] The following is combined Figs. 1 to 4 This describes an embodiment of the present application.

[0023] According to an embodiment of this application, in one aspect, a vacuum adsorption system for removing surface liquid from a lead-acid battery PE separator 2 is provided, comprising intersecting first direction X and second direction Y, including a shell 1, a vacuum adsorption chamber 3, a vacuum device, and a condensation recovery device. The shell 1 is provided with a cavity 101, suitable for supplying the separator 2 to pass through along the first direction X. Multiple vacuum adsorption chambers 3 are provided, sequentially distributed within the cavity 101 along the first direction X. Each vacuum adsorption chamber 3 has a chamber, and adsorption holes 301 are provided on the chamber wall of the vacuum adsorption chamber 3 facing the separator 2 along the second direction Y. A gap is left between the adsorption holes 301 and the separator 2, and the adsorption holes 301 communicate with the chamber. The vacuum device includes a vacuum pump, which is connected to the chamber of the vacuum adsorption chamber 3 via a pipeline. The condensation recovery device is disposed on the pipeline between the vacuum pump and the vacuum adsorption chamber 3, suitable for separating the liquid and gas drawn into the vacuum adsorption chamber 3.

[0024] It should be noted that this system includes an outer shell 1, which has an internal cavity 101 for the diaphragm 2 to pass through; multiple vacuum adsorption chambers 3 are arranged sequentially in the cavity 101 along the direction of travel of the diaphragm 2, and each vacuum adsorption chamber 3 has an adsorption hole 301 on its wall facing the diaphragm 2. The adsorption hole 301 communicates with the internal chamber of the vacuum adsorption chamber 3 and maintains a non-contact gap with the surface of the diaphragm 2; a vacuum device is connected to the chambers of each vacuum adsorption chamber 3 through pipelines to provide suction power; a condensation recovery device is located on the pipeline between the vacuum adsorption chamber 3 and the vacuum pump to separate the sucked liquid and gas, thereby achieving the removal of the floating liquid and the preliminary recovery of the solvent.

[0025] In this embodiment, the floating liquid on the surface of the separator 2 is effectively removed by non-contact vacuum adsorption, avoiding damage to the separator 2 caused by physical contact. At the same time, the condensation recovery device can separate the sucked liquid and gas, realize the initial recovery of solvent, reduce solvent waste and environmental pollution, and provide a basic guarantee for the green manufacturing of high-end lead-acid battery separator 2.

[0026] In one embodiment, the condensation recovery device includes a collection tank, a condenser, and a gas-liquid separator. The condenser and the gas-liquid separator are sequentially arranged on the pipeline along the direction from the vacuum adsorption chamber 3 to the vacuum pump. The condenser is used to liquefy the liquid contained in the gas in the pipeline. The gas-liquid separator includes a liquid outlet and a gas outlet. The liquid outlet is connected to the collection tank, and the gas outlet is connected to the input end of the vacuum pump.

[0027] It should be noted that after the gas-liquid mixture is extracted from the vacuum adsorption chamber 3, it is first cooled by a condenser (e.g., by introducing a 5°C refrigerant) to liquefy the solvent vapor; then it enters the gas-liquid separator, where the liquid flows into the collection tank from the bottom outlet and the gas enters the vacuum pump from the top outlet, thereby achieving efficient gas-liquid separation and solvent recovery, and protecting the vacuum pump from damage by solvent vapor.

[0028] Optionally, the condensation recovery unit may also include a cryogenic trap located between the gas-liquid separator and the vacuum pump.

[0029] In this embodiment, the solvent vapor in the gas is liquefied by a condenser, and then the liquid and gas are efficiently separated by a gas-liquid separator, ensuring that the solvent is fully recovered, reducing the load on the vacuum pump, preventing the solvent vapor from damaging the vacuum pump, and improving the solvent recovery rate and the stability of the system operation.

[0030] In one embodiment, an installation adjustment mechanism is also provided in the cavity 101 to support and fix the vacuum adsorption box 3, and to make three-dimensional fine adjustments to ensure that the adsorption hole 301 and the surface of the diaphragm 2 maintain the optimal distance and relative position.

[0031] In one embodiment, the device further includes a solvent recovery unit, comprising a solvent recovery tank connected to a collection tank and adapted to collect liquid from the collection tank.

[0032] It should be noted that the system is further equipped with solvent recovery equipment, whose solvent recovery tank is connected to the liquid collection tank for storing the liquid solvent collected from the gas-liquid separator. This achieves centralized recovery and recycling of solvents, significantly reducing solvent consumption and VOC emissions, and improving the environmental friendliness and economy of production.

[0033] In this embodiment, the separated liquid solvent is collected in a solvent recovery tank, which facilitates the reuse of the solvent and realizes the recycling of resources. This further reduces production costs and environmental pressure, while also reducing the emission of volatile organic compounds (VOCs), which meets the requirements of green production.

[0034] In one embodiment, the adsorption hole 301 is configured as an elongated strip structure, the adsorption hole 301 is configured as a slit structure, and multiple adsorption holes 301 are provided. The multiple adsorption holes 301 are arranged in an array on the wall of the vacuum adsorption chamber 3 along the second direction Y toward the diaphragm 2.

[0035] It should be noted that the adsorption holes 301 are designed as elongated slit structures and arranged in an array on the adsorption surface of the vacuum adsorption chamber 3. This arrangement enables more uniform and comprehensive adsorption coverage of the diaphragm 2 surface, avoids localized liquid residue, improves the uniformity and efficiency of liquid removal, and ensures the surface quality and thickness consistency of the diaphragm 2.

[0036] In this embodiment, the uniform distribution of multiple adsorption pores 301 ensures uniform adsorption of the floating liquid on the surface of the diaphragm 2, avoids the problem of uneven removal in some areas, improves the surface quality and smoothness of the diaphragm 2, and enhances the efficiency and consistency of floating liquid removal, making it suitable for the precision manufacturing of high-end diaphragms 2.

[0037] In one embodiment, the pipeline includes a main pipe 5 and branch pipes 6. One end of the main pipe 5 is connected to a vacuum pump, and a condensation recovery device is installed on the main pipe 5. Multiple branch pipes 6 are provided, and each branch pipe 6 is respectively connected to a multiple vacuum adsorption chamber 3. One end of each branch pipe 6 is connected to a chamber of the vacuum adsorption chamber 3, and the other end of each branch pipe 6 is connected to the main pipe 5.

[0038] It should be noted that the main pipe 5 of the piping system is connected to the vacuum pump and is equipped with a condensation recovery device, while multiple branch pipes 6 are connected to each vacuum adsorption chamber 3 and merge with the main pipe 5. This structure allows multiple vacuum adsorption chambers 3 to share the same vacuum source and recovery system, while also allowing independent control of each vacuum adsorption chamber 3, simplifying the system architecture and improving layout flexibility.

[0039] In this embodiment, each vacuum adsorption chamber 3 is independently connected by a branch pipe 6, allowing independent control of the vacuum level of each chamber. This enables flexibility and optimization of multi-stage adsorption, improves the efficiency of flotation removal, and simplifies the system structure by designing the main pipe 5, making it easier to install, maintain and operate.

[0040] In one embodiment, the vacuum device further includes multiple regulating components, each corresponding to one of the multiple branch pipes 6. The regulating components are adapted to adjust the vacuum level within the vacuum adsorption chamber 3, and include a vacuum buffer tank, a vacuum regulating valve, and a vacuum gauge. The vacuum level within the vacuum adsorption chamber 3 gradually increases or gradually decreases along the travel direction.

[0041] It should be noted that the vacuum unit is equipped with adjustment components for each of the six sections, including a vacuum buffer tank, a vacuum regulating valve, and a vacuum gauge. Through independent adjustment, a vacuum gradient (e.g., from -10kPa to -25kPa) can be created between multiple chambers, gradually completing the process from rapid suction of large amounts of liquid to fine surface finishing, thus optimizing the removal effect and product quality.

[0042] In this embodiment, by independently adjusting the vacuum level of each vacuum adsorption chamber 3, a vacuum level gradient can be formed to adapt to the needs of different removal stages, such as from coarse removal to fine finishing, thereby improving the accuracy and efficiency of liquid removal and ensuring the thickness consistency of the diaphragm 2 and product quality.

[0043] In one embodiment, the vacuum pump is provided with an inlet end and an outlet end, the inlet end being connected to the main pipe 5, and the outlet end being provided with a gas purification component.

[0044] It should be noted that a gas purification component (such as a high-efficiency filter) is installed at the exhaust end of the vacuum pump to further purify the exhaust gas, remove any residual solvent vapors or particulate matter, reduce the environmental impact of exhaust emissions, and protect subsequent pipelines and equipment.

[0045] In this embodiment, the gas purification component can further purify the exhaust gas, remove residual solvent vapors, reduce the emission of volatile organic compounds (VOCs), protect the environment, prevent harmful gases from corroding the equipment, extend the service life of the vacuum pump, and improve the reliability and safety of the system.

[0046] In one embodiment, the output of the purification component is connected to the solvent recovery tank.

[0047] It should be noted that the output end of the gas purification component is connected to the solvent recovery tank of the solvent recovery equipment, so that the residual solvent captured during the purification process can be further recovered to the solvent recovery tank, achieving near-zero solvent emissions and maximizing resource utilization, thereby further improving the environmental performance and operational economy of the system.

[0048] In this embodiment, the residual solvent in the purified gas is recovered to the solvent recovery tank, achieving complete solvent recovery, further improving solvent utilization, reducing resource waste and environmental pollution, and enhancing the overall environmental performance and economic benefits of the system.

[0049] In one embodiment, a control device is also included, which is electrically connected to the vacuum regulating valve, the condenser, and the gas-liquid separator, respectively.

[0050] It should be noted that the system is equipped with a control device that is electrically connected to key components such as the vacuum regulating valve, condenser, and gas-liquid separator. By receiving sensor signals, it automatically adjusts parameters such as vacuum level and condensation temperature to ensure stable system operation, achieve precise control of the flocculant removal process, and enable efficient linkage with the production line.

[0051] Understandably, the control device can also be used to receive various sensor signals and control vacuum, condensing temperature, exhaust air volume, and linkage with production line speed. The control system can also dynamically adjust the condenser power and exhaust flow based on the dew point value in the extraction tank monitored by the online dew point meter to achieve stable production.

[0052] In this embodiment, through automated control, key parameters such as vacuum degree and condensation temperature are adjusted in real time to ensure stable system operation, optimize the removal effect of floating liquid, improve production efficiency and product quality, and at the same time realize linkage with the production line, reduce the need for manual intervention, and improve the intelligence and precision of manufacturing.

[0053] According to an embodiment of this application, another aspect provides a method for vacuum adsorption removal of surface liquid from a PE separator in a lead-acid battery, applied to a vacuum adsorption removal system for surface liquid from a PE separator in a lead-acid battery, comprising the following steps: The extracted wet diaphragm 2 is passed through the cavity 101 of the outer shell 1 at a constant speed. The vacuum device and condensation recovery device are activated, drawing the liquid and gas from the surface of the diaphragm 2 into the condensation recovery device through the adsorption holes 301 at different vacuum levels. The condenser in the condensation recovery device condenses the gas-liquid mixture, causing the solvent vapor to condense into liquid. The condensed gas-liquid mixture is separated in the gas-liquid separator within the condensation recovery device, and the liquid solvent is recovered to the solvent recovery tank. The separated gas is then transported to the solvent recovery tank via a vacuum pump in the vacuum device. The treated diaphragm 2 then proceeds to the subsequent drying process.

[0054] It should be noted that the method specifically includes passing the extracted wet diaphragm 2 through the system cavity 101 at a constant speed; after the system is started, the floating liquid is drawn through the adsorption holes 301 on the multi-stage vacuum adsorption box 3 at different vacuum degrees; after the gas-liquid mixture is liquefied by the condenser and separated by the gas-liquid separator, the liquid solvent is recovered to the solvent recovery tank, and the gas is discharged after purification; the treated diaphragm 2 enters the drying process, completing the entire process of efficient and environmentally friendly floating liquid removal.

[0055] In this embodiment, a systematic approach is used to achieve efficient and uniform removal of the floating liquid, while recovering the solvent, protecting the equipment, and reducing energy consumption. This provides a complete and reliable solution for the production of diaphragm 2, ensuring the environmental friendliness, safety, and economy of the production process, and is suitable for large-scale industrial applications.

[0056] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and all such modifications and variations fall within the scope defined by the appended claims.

[0057] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and all such modifications and variations fall within the scope defined by the appended claims.

Claims

1. A lead-acid battery PE separator surface float liquid vacuum adsorption removal system, comprising intersecting first direction (X) and second direction (Y), characterized in that, The application relates to a membrane separation device, which comprises the following components: a housing (1) provided with a cavity (101) suitable for a diaphragm (2) to pass along a first direction (X); a plurality of vacuum adsorption boxes (3) distributed along the first direction (X) in the cavity (101) in sequence, wherein the vacuum adsorption box (3) has a chamber, the box wall of the vacuum adsorption box (3) along a second direction (Y) is provided with an adsorption hole (301) facing the diaphragm (2), a gap is left between the adsorption hole (301) and the diaphragm (2), and the adsorption hole (301) is communicated with the chamber; a vacuum device comprising a vacuum pump communicated with the chamber of the vacuum adsorption box (3) through a pipeline; a condensation recovery device arranged on the pipeline between the vacuum pump and the vacuum adsorption box (3) and suitable for separating liquid and gas sucked by the vacuum adsorption box (3).

2. The lead acid battery PE separator surface slurry vacuum suction removal system of claim 1, wherein, The condensation recovery device comprises: a liquid collecting tank; a condenser and a gas-liquid separator arranged on the pipeline in sequence from the vacuum adsorption box (3) to the vacuum pump, the condenser is used for liquefying liquid contained in gas in the pipeline, the gas-liquid separator comprises a liquid outlet and a gas outlet, the liquid outlet is communicated with the liquid collecting tank, and the gas outlet is communicated with the input end of the vacuum pump.

3. The lead-acid battery PE separator surface slurry vacuum suction removal system of claim 2, wherein, Further comprising: a solvent recovery device comprising a solvent recovery tank communicated with the liquid collecting tank and suitable for collecting liquid in the liquid collecting tank.

4. The lead-acid battery PE separator surface slurry vacuum suction removal system of claim 3, wherein, The adsorption hole (301) is arranged in a long strip structure, the adsorption hole (301) is arranged in a slit structure, a plurality of adsorption holes (301) are arranged in an array on the box wall of the vacuum adsorption box (3) along the second direction (Y) facing the diaphragm (2).

5. The lead-acid battery PE separator surface slurry vacuum suction removal system of claim 4, wherein, The pipeline comprises: a main pipe (5) communicated with the vacuum pump at one end, and the condensation recovery device is arranged on the main pipe (5); a plurality of branch pipes (6) arranged one by one corresponding to the plurality of vacuum adsorption boxes (3), one end of the branch pipe (6) is communicated with the chamber of the vacuum adsorption box (3), and the other end of the branch pipe (6) is communicated with the main pipe (5).

6. The lead-acid battery PE separator surface slurry vacuum suction removal system of claim 5, wherein, The vacuum device further comprises: a plurality of adjusting assemblies arranged one by one corresponding to the plurality of branch pipes (6), the adjusting assembly is suitable for adjusting the vacuum degree in the vacuum adsorption box (3), and the adjusting assembly comprises a vacuum buffer tank, a vacuum adjusting valve and a vacuum gauge; wherein the vacuum degree in the vacuum adsorption box (3) gradually increases along the passing direction, or the vacuum degree in the vacuum adsorption box (3) gradually decreases along the passing direction.

7. The lead-acid battery PE separator surface slurry vacuum suction removal system of claim 6, wherein, The vacuum pump is provided with an air inlet end and an air outlet end, the air inlet end is communicated with the main pipe (5), and the air outlet end is provided with a gas purification assembly.

8. The lead-acid battery PE separator surface slurry vacuum suction removal system of claim 7, wherein, The output end of the purification assembly is communicated with the solvent recovery tank.

9. The lead-acid battery PE separator surface slurry vacuum suction removal system of claim 8, wherein, Further comprising: a control device electrically connected with the vacuum adjusting valve, the condenser and the gas-liquid separator.

10. A lead-acid battery PE separator surface float solution vacuum adsorption removal method applied to the system of claim 9, characterized in that, The application further comprises the following steps: The wet membrane (2) after extraction is passed through the cavity (101) of the shell (1) at a constant speed; The vacuum device and the condensation recovery device are started, and the liquid and gas on the surface of the membrane (2) are sucked into the condensation recovery device through the suction hole (301) under different vacuum degrees; The condenser in the condensation recovery device condenses the gas-liquid mixture, so that the solvent vapor is condensed into liquid; The condensed gas-liquid mixture is separated in the gas-liquid separator in the condensation recovery device, and the liquid solvent is recovered to the solvent recovery tank; The separated gas is transported to the solvent recovery tank by the vacuum pump in the vacuum device; The treated membrane (2) enters the subsequent drying process.

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