Membrane element dismounting device

Abstract

The utility model discloses a membrane element dismounting device which comprises a fixing assembly and a working assembly, the fixing assembly comprises a fixing piece, and the working assembly comprises a center rod, an expansion pad and a driver. According to the membrane element dismounting device, the fixing piece of the fixing assembly can be connected with the membrane shell and provides stable support for the working assembly, the driver drives the center rod to slide in a reciprocating mode so as to drive the expansion pad to move, and after the expansion pad abuts against the membrane element to be dismounted, the center rod drives the expansion pad to slide and pushes the membrane element to be dismounted to move in the membrane shell. The disassembly convenience of the membrane element is improved, the driver is used for driving the center rod and the expansion pad, and meanwhile the disassembly efficiency of the membrane element is improved. And the expansion pad is made of an elastic element, so that the membrane element can be effectively protected and prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of membrane separation equipment and peripheral supporting facilities thereof, in particular to a membrane element disassembly device. Background Art

[0002] Membrane separation technology is an efficient and environmentally friendly separation and purification technology widely used in water treatment, food and beverage, pharmaceutical, chemical, and energy sectors. Membrane elements are core components in membrane separation technology, separating and purifying substances through selective separation. Since membrane elements can be affected by factors such as contamination, aging, and damage during use, leading to performance degradation or even failure, they must be regularly replaced or cleaned to ensure the proper operation of the membrane separation system. However, in practical applications, replacing and cleaning membrane elements is not easy. Due to the strong adhesion between the membrane element and the support layer, disassembly requires specific tools and methods, and the disassembly process may damage the membrane element. Furthermore, contaminants on the membrane element surface require specific cleaning methods to remove them, otherwise their performance will be affected. Therefore, membrane element disassembly has become a major research topic in membrane separation technology. To address this issue, a range of membrane element disassembly techniques have been studied, including mechanical stripping, thermal stripping, chemical stripping, and ultrasonic methods. Furthermore, membrane element cleaning methods, including solvent cleaning, water cleaning, gas phase cleaning, and plasma cleaning, have also been extensively studied. At the same time, in order to improve the efficiency of disassembly and cleaning, some related equipment and technologies have also been developed, such as membrane element cutting machines, membrane element strippers, cleaning machines, testing equipment, etc.

[0003] Membrane element disassembly has enabled membrane separation technology to be widely used in various fields. Research is needed on a range of membrane element disassembly and cleaning techniques, as well as related equipment and technologies, to improve the efficiency and stability of membrane separation technology. Therefore, how to disassemble membrane elements conveniently and efficiently is of great research significance and practical application value. Utility Model Content

[0004] The purpose of the utility model is to provide a membrane element disassembly device to solve the problems existing in the above-mentioned related technologies, to achieve efficient and convenient disassembly of membrane elements, and at the same time to provide protection for the membrane elements during the disassembly process to avoid damage to the membrane elements during the disassembly process.

[0005] To achieve the above purpose, the present invention provides the following solutions:

[0006] The utility model provides a membrane element disassembly device, comprising:

[0007] A fixing assembly, the fixing assembly comprising a fixing piece, the fixing piece being detachably connected to the membrane shell where the membrane element to be removed is located;

[0008] A working component, which includes a center rod, an expansion pad and a driver. The center rod can be slidably extended into the membrane shell, and one end of the center rod extending into the membrane shell is detachably connected to the expansion pad. The expansion pad is made of elastic material, and the expansion pad can be abutted against the membrane element to be disassembled. The area of ​​the abutting surface between the expansion pad and the membrane element to be disassembled is smaller than the area of ​​the membrane element to be disassembled. The other end of the center rod is transmission-connected to the driver; the center rod drives the expansion pad to slide back and forth in the membrane shell, and can push the membrane element to be disassembled in the membrane shell to realize the disassembly of the membrane element to be disassembled.

[0009] Preferably, when the fixing member is connected to the membrane shell, the fixing member and the membrane shell are connected by a fixing belt; or, the fixing member and the membrane shell are plug-connected, and the fixing member is sleeved on the outside of the membrane shell.

[0010] Preferably, the fixing assembly further comprises a fixing disk, which is connected to the fixing member and can abut against the axial end surface of the membrane shell. The center rod can slidably pass through the fixing disk and extend into the membrane shell.

[0011] Preferably, the working assembly further includes a propeller, which is rotatably disposed on the fixed disk, the output end of the driver is transmission-connected to the propeller, and the propeller is transmission-connected to the center rod to drive the center rod to slide back and forth.

[0012] Preferably, the propulsion member is threadedly connected to the central rod to form a ball screw mechanism.

[0013] Preferably, the propulsion member is sleeved on the outside of the central rod and the two are coaxially arranged.

[0014] Preferably, a limiting element is provided between the propulsion member and the center rod to limit the extreme position of the reciprocating sliding of the center rod.

[0015] Preferably, the length of the central rod is adjustable.

[0016] Preferably, the central rod is a split structure, and the central rod includes a plurality of branch rod segments, and the adjacent branch rod segments are detachably connected, and the adjacent branch rod segments are threadedly connected or snap-connected.

[0017] Preferably, the expansion pad is a columnar structure, and the expansion pad is connected to the center rod by clamping.

[0018] Compared with the related art, the present invention has achieved the following technical effects: the membrane element disassembly device of the present invention includes a fixing assembly and a working assembly, the fixing assembly includes a fixing part, and the fixing part can be detachably connected to the membrane shell where the membrane element to be disassembled is located; the working assembly includes a center rod, an expansion pad and a driver, the center rod can be slidably extended into the membrane shell, and one end of the center rod extending into the membrane shell is detachably connected to the expansion pad, the expansion pad is made of elastic material, the expansion pad can be abutted against the membrane element to be disassembled, the area of ​​the abutting surface of the expansion pad and the membrane element to be disassembled is smaller than the area of ​​the membrane element to be disassembled, and the other end of the center rod is transmission-connected to the driver; the center rod drives the expansion pad to slide back and forth in the membrane shell, and can push the membrane element to be disassembled in the membrane shell to realize the disassembly of the membrane element to be disassembled.

[0019] In the membrane element disassembly device of the present invention, the fixing part of the fixing assembly can be connected to the membrane shell to provide stable support for the working assembly. The driver drives the center rod to slide back and forth, thereby driving the expansion pad to move. After the expansion pad abuts the membrane element to be disassembled, the center rod is used to drive the expansion pad to slide, pushing the membrane element to be disassembled to move in the membrane shell until the membrane element to be disassembled is pushed out to realize the disassembly of the membrane element, thereby improving the convenience of disassembly of the membrane element. The driver drives the center rod and the expansion pad, thereby improving the disassembly efficiency of the membrane element. The expansion pad is made of an elastic element, which can effectively protect the membrane element and avoid damage to the membrane element. The abutment area between the expansion pad and the membrane element is smaller than the cross-sectional area of ​​the membrane element, thereby avoiding the expansion pad from scratching the side wall of the membrane shell when moving in the membrane shell to cause damage to the membrane element, further enhancing the protection effect on the membrane element. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a structural schematic diagram of the membrane element disassembly device disclosed in an embodiment of the present utility model.

[0022] In the figure: 1. expansion pad; 2. fixing member; 3. center rod; 4. fixing plate; 5. propulsion member; 6. driver. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] The purpose of the utility model is to provide a membrane element disassembly device to solve the problems existing in the above-mentioned related technologies, to achieve efficient and convenient disassembly of membrane elements, and at the same time to provide protection for the membrane elements during the disassembly process to avoid damage to the membrane elements during the disassembly process.

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0026] This utility model provides a membrane element disassembly device, please refer to Figure 1 , a fixing component and a working component, the fixing component includes a fixing part 2, which can be detachably connected to the membrane shell where the membrane element to be disassembled is located; the working component includes a center rod 3, an expansion pad 1 and a driver 6, the center rod 3 can be slidably extended into the membrane shell, and one end of the center rod 3 extending into the membrane shell is detachably connected to the expansion pad 1, the expansion pad 1 is made of elastic material, the expansion pad 1 can be abutted against the membrane element to be disassembled, the area of ​​the abutting surface of the expansion pad 1 and the membrane element to be disassembled is smaller than the area of ​​the membrane element to be disassembled, and the other end of the center rod 3 is transmission-connected to the driver 6; the center rod 3 drives the expansion pad 1 to slide back and forth in the membrane shell, which can push the membrane element to be disassembled in the membrane shell to realize the disassembly of the membrane element to be disassembled.

[0027] In the membrane element disassembly device of the present invention, the fixing member 2 of the fixing assembly can be connected to the membrane shell to provide stable support for the working assembly. The driver 6 drives the center rod 3 to slide back and forth, thereby driving the expansion pad 1 to move. After the expansion pad 1 abuts the membrane element to be disassembled, the center rod 3 is used to drive the expansion pad 1 to slide, pushing the membrane element to be disassembled to move in the membrane shell until the membrane element to be disassembled is pushed out to realize the disassembly of the membrane element, thereby improving the convenience of disassembly of the membrane element. The driver 6 drives the center rod 3 and the expansion pad 1, thereby improving the disassembly efficiency of the membrane element. The expansion pad 1 is made of an elastic element, which can effectively protect the membrane element and avoid damage to the membrane element. The abutment area between the expansion pad 1 and the membrane element is smaller than the cross-sectional area of ​​the membrane element, thereby avoiding the expansion pad 1 from scratching the side wall of the membrane shell when moving in the membrane shell to cause damage to the membrane element, thereby further enhancing the protection effect on the membrane element.

[0028] It also needs to be explained here that the utility model provides an expansion pad 1 at one end of the center rod 3 extending into the membrane shell, which increases the force-bearing area of ​​the membrane element to be disassembled and provides protection for the membrane element. The utility model stipulates that the contact area between the expansion pad 1 and the membrane element is smaller than the cross-sectional area of ​​the membrane element. This is to ensure that the cross-sectional area of ​​the expansion pad 1 is smaller than the cross-sectional area of ​​the membrane shell (the cross-sectional area here refers to the cross-sectional area in the plane perpendicular to the sliding direction of the center rod 3). The cross-sectional area of ​​the expansion pad 1 is reasonably set to increase the force-bearing area of ​​the membrane element, while avoiding scratches between the expansion pad 1 and the side of the membrane shell, thereby effectively protecting the membrane element.

[0029] The fixing member 2 can be connected to the membrane shell using a fixing strap. This strapping connection is convenient and simple in structure. In practical applications, the fixing member 2 can also be plugged into the membrane shell, where the fixing member 2 is sleeved onto the outside of the membrane shell. The fixing member 2 can be connected to the membrane shell using different connection methods depending on the actual working conditions, providing stable support for the working assembly and ensuring effective removal of the membrane element.

[0030] Specifically, the fixing assembly also includes a fixing disk 4, which is connected to the fixing part 2. The fixing disk 4 can be against the axial end face of the membrane shell, further enhancing the connection stability between the fixing assembly and the membrane shell, and providing stable support for the center rod 3 and the expansion pad 1. The center rod 3 can slide through the fixing disk 4 and extend into the membrane shell.

[0031] More specifically, the working assembly also includes a propeller 5, which is rotatably mounted on a fixed disk 4. The output end of a driver 6 is drivingly connected to the propeller 5, which in turn is drivingly connected to the center rod 3 to drive the center rod 3 back and forth. The driver 6 drives the propeller 5 to rotate, which in turn drives the center rod 3 back and forth, thereby pushing the membrane element using the expansion pad 1 to facilitate removal. The driver 6 can use a belt drive, gear drive, or other method to drive the propeller 5, ensuring smooth power transmission and reliable operation of the membrane element removal device.

[0032] In this embodiment, the propeller 5 is threadedly connected to the center rod 3 to form a ball screw mechanism, which converts rotational motion into reciprocating sliding motion of the center rod 3. The propeller 5 and the center rod 3 form a ball screw mechanism, further improving the motion stability of the center rod 3. In other achievable embodiments of the present invention, the propeller 5 and the center rod 3 can also use other transmission methods to achieve power transmission, such as a rack and pinion structure. In actual applications, the appropriate transmission method can be selected according to actual working conditions to improve the flexibility and adaptability of the device.

[0033] It should also be noted that the propeller 5 is sleeved on the outside of the center rod 3 and the two are arranged coaxially to improve the uniformity of the force applied to the center rod 3. In actual applications, when the membrane shell is a cylindrical structure, the center rod 3 and the expansion pad 1 can be arranged coaxially with the membrane shell to improve the uniformity of the force applied to the membrane element to be removed.

[0034] In order to improve the safety of the reciprocating motion of the center rod 3, a limiting element is set between the propeller 5 and the center rod 3 to limit the extreme position of the reciprocating sliding of the center rod 3, prevent the center rod 3 from falling out of the propeller 5, and improve the working reliability of the device.

[0035] Furthermore, the length of the central rod 3 can be adjusted to accommodate the disassembly of membrane elements in membrane shells of various specifications, thereby improving the flexibility and adaptability of the device.

[0036] In this embodiment, the center rod 3 is a split structure, comprising multiple segments. Adjacent segments are detachably connected, either by threaded connections or snap-fit ​​connections. An appropriate number of segments are selected based on the size of the membrane shell, and the segments are connected to form a single unit, forming the center rod 3. The end of the center rod 3 is connected to the expansion pad 1 to accommodate various membrane element disassembly conditions. In other conceivable embodiments of the present invention, the center rod 3 may also be a telescopic structure to accommodate length adjustments.

[0037] In other achievable embodiments of the present invention, the expansion pad 1 is a columnar structure, and the expansion pad 1 is connected to the center rod 3 by snapping, so that the connection is fastened and easy to assemble and disassemble, and convenient to replace. It should also be explained that the expansion pad 1 needs to have a certain degree of elasticity while also having a certain degree of wear resistance to ensure the strength of the expansion pad 1 and extend the service life of the expansion pad 1. The reasonable selection of the material of the expansion pad 1 is a common practice of those skilled in the art and will not be elaborated here.

[0038] The membrane element disassembly device of the utility model has the following beneficial effects:

[0039] (1) The membrane element disassembly device of the present invention can simplify the disassembly process. The device can quickly connect the gap between the membrane element and the membrane shell. Through the rotation of the center rod 3 and the force of the propeller 5, the expansion pad 1 can be moved back and forth. Compared with the traditional disassembly method, the membrane element disassembly process is greatly simplified and unnecessary tedious operating steps are reduced.

[0040] (2) The membrane element disassembly device of the present invention does not require the assistance of complex tools. When using a roll-type membrane element, no additional complex auxiliary tools are required. Unlike traditional disassembly, which may require multiple wrenches, screwdrivers and other tools to gradually disassemble the relevant components, the device, with its own structural design, can achieve the entire disassembly process by simply applying force to the center rod 3 and the propulsion member 5 through the force-applying member, making it more convenient and quick for operators to use.

[0041] (3) The membrane element disassembly device of the present invention can reduce physical damage during the demolding process. Traditional disassembly methods may easily cause physical damage to the membrane element, such as scratches and collisions, due to improper operation or unreasonable use of tools. However, the expansion pad 1 and other components of the membrane element disassembly device of the present invention are carefully designed to evenly bear force during the disassembly process and have a relatively gentle contact with the membrane element, thereby minimizing physical damage to the membrane element, ensuring the integrity of the membrane element, and extending its service life.

[0042] (4) The membrane element disassembly device of the present invention can prevent chemical contamination. In some disassembly scenarios, if the disassembly method is improper, some chemical substances may be introduced, causing contamination to the membrane element and affecting its subsequent performance. The membrane element disassembly device of the present invention takes this factor into consideration in its design. It does not introduce additional chemical contaminants during the disassembly process, can keep the membrane element clean, and ensure that the performance of the membrane element during reinstallation or other applications is not affected by chemical contamination.

[0043] (4) The membrane element disassembly device of the present invention, through its rational mechanical structure design, can complete the disassembly of the membrane element in a relatively short time. For example, the rotation of the propeller 5 can quickly drive the center rod 3 to move forward and backward, and the expansion pad 1 can also quickly achieve expansion and fixation functions. The entire process is coherent and efficient, significantly shortening the disassembly time compared to traditional manual disassembly methods.

[0044] (5) The membrane element disassembly device of the present invention is suitable for batch operation. In some situations where multiple wound membrane elements need to be disassembled, such as large-scale equipment maintenance in a factory or quality inspection in a membrane element manufacturer, the membrane element disassembly device of the present invention can meet the needs of batch operation. Operators can quickly and repeatedly use the device on different membrane elements for disassembly, thereby improving overall work efficiency and saving manpower and time costs.

[0045] (6) The membrane element disassembly device of the present invention is applicable to membrane elements of various specifications and has a certain degree of versatility. It can be used to disassemble rolled membrane elements of different specifications and models. Its design takes into account various dimensional factors. Through adjustable components or reasonable structural layout, membrane elements of different diameters, lengths and types can be disassembled, meeting the needs of different users and application scenarios, and reducing the trouble of having to equip multiple disassembly tools due to differences in membrane element specifications.

[0046] (7) The membrane element disassembly device of the present invention has various components that have been carefully designed and made of carefully selected materials. Its performance is stable and reliable, and it has high mechanical strength and stability. During the disassembly process, it can withstand certain forces such as tension and pressure, and will not easily deform or damage. For example, the center rod 3 is made of high-strength material and can maintain good performance during frequent rotation and stress, ensuring the smooth progress of the entire disassembly process and improving the reliability and service life of the device.

[0047] The membrane element disassembly device of the present invention is further explained below through specific comparative examples and application examples.

[0048] Comparative Example 1

[0049] Conventional membrane element removal tools typically consist of a robotic arm, pulleys, and a tripod. The mechanical claws and chains on the robotic arm are used to remove the membrane element from the membrane housing. Following the operating instructions, the tool was tested for removal efficiency, physical damage to the membrane, and chemical contamination, and its versatility and reliability were evaluated.

[0050] Comparative Example 2

[0051] A membrane element disassembly device in the prior art. The device includes a cylinder with a slide groove, a slider slidably mounted on the slide groove, a guide block detachably fixed to the open end of the slide groove, and at least two clamps fixed to the slider and slidable through the guide block. The cylinder is inserted into the central tube of the membrane element. When the open end face of the cylinder abuts against the first end face of the connector, it is pushed and slid in the positive direction. The slider slides along the slide groove, and the slider drives all the clamps to slide from the first end face relative to the guide block. All the clamps are separated from each other under the guidance of the guide block until all the clamps abut against the second end face of the connector. All the clamps are forced out of the membrane shell through the connector to pull the membrane element out together. The device is tested for disassembly efficiency, physical damage to the membrane, and chemical contamination according to the operating method, and its versatility and reliability are evaluated.

[0052] Comparative Example 3

[0053] A conventional separation membrane element removal device. This device comprises a support plate resting against the top of the separation membrane element. A locator is threadedly connected to the center of the support plate. One end of the locator extends into the centerline tube of the separation membrane element, and the other end is connected to a thrust structure. The locator and thrust structure act together to remove the separation membrane element from its housing. The device was tested for disassembly efficiency, physical damage to the membrane, and chemical contamination according to the operating instructions, and its versatility and reliability were evaluated.

[0054] Application Example 1

[0055] The membrane element disassembly device of the present invention is applied to reverse osmosis systems. In large-scale industrial reverse osmosis water treatment systems, when the performance of membrane elements deteriorates after a long period of operation and new membrane elements need to be replaced or existing membrane elements need to be maintained, the membrane element disassembly device of the present invention can efficiently remove the old membrane elements from the pressure vessel without causing damage to the membrane elements and the pressure vessel, and can accurately and quickly complete the disassembly work, thereby improving maintenance efficiency. For those companies that adopt multi-stage reverse osmosis processes, such as the preparation of ultrapure water in the electronic chip manufacturing industry, the rolled membrane elements in their reverse osmosis systems need to be replaced regularly to ensure water quality, and the disassembly device can adapt to the disassembly needs of membrane elements of different specifications and models, thereby ensuring the stable operation of the entire water treatment process.

[0056] Application Example 2

[0057] This utility model's membrane element removal device is used in ultrafiltration systems. In urban drinking water treatment ultrafiltration processes and ultrafiltration applications in the food and beverage industry, ultrafiltration membrane elements require cleaning or replacement after a period of operation due to contamination. This utility model's membrane element removal device conveniently removes them from the system, reducing downtime, improving water supply stability, and ensuring product quality and efficiency without impacting production schedules.

[0058] Application Example 3

[0059] When a nanofiltration membrane element needs to be replaced or repaired, the membrane element disassembly device of the present invention can precisely remove the rolled membrane element from the equipment, avoiding damage to surrounding components while reducing operator labor and improving maintenance efficiency. In the field of water resource recycling, the rolled membrane elements of nanofiltration systems play a significant role in removing harmful substances and salt from water. When a membrane element reaches the end of its service life or malfunctions, the membrane element disassembly device of the present invention can promptly disassemble it for replacement or repair, ensuring the normal operation of the water resource recycling system.

[0060] Application Example 4

[0061] The membrane element disassembly device of this utility model is used in waste gas treatment. Although spiral wound membrane elements are not widely used in waste gas treatment, they are also used in certain waste gas purification processes, such as using membrane separation technology to recover valuable components from waste gas or remove harmful gases. When the membrane element needs to be inspected, replaced, or repaired, the membrane element disassembly device of this utility model can assist in completing these operations, thereby ensuring the stable operation and purification effect of the waste gas treatment system.

[0062] Application Example 5

[0063] The membrane element removal device of this utility model is used in food processing. In food production enterprises, membrane separation technology can be applied in processes such as juice concentration and dairy product sterilization. Once the membrane element is clogged by fruit pomace, affecting juice quality and yield, it needs to be replaced or cleaned. The membrane element removal device of this utility model can quickly and safely complete the removal work, ensuring production continuity and product quality.

[0064] Application Example 6

[0065] The membrane element disassembly device of the present invention is applied to the pharmaceutical industry. In the field of biopharmaceuticals, membrane separation technology is widely used in the concentration, purification and separation of drugs. When the membrane element is contaminated by substances such as proteins and needs to be cleaned or replaced, the membrane element disassembly device of the present invention can safely remove the membrane element from the pharmaceutical equipment, which not only avoids damage to the membrane element and the equipment, but also reduces the difficulty and risk of manual operation, ensuring the quality and safety of drug production. In the process of extraction and purification of traditional Chinese medicine, rolled membrane elements are also used. When the membrane element needs to be maintained or replaced, the membrane element disassembly device of the present invention can quickly complete the disassembly task, ensure the smooth progress of the traditional Chinese medicine production process, and improve the quality and purity of traditional Chinese medicine products.

[0066] Application Example 7

[0067] In membrane technology-related research experiments, it's often necessary to replace wound membrane elements of varying types and specifications to conduct various studies. This utility model's membrane element disassembly device facilitates the replacement and adjustment of membrane elements, improving experimental efficiency while ensuring the integrity and stability of experimental equipment. This device is suitable for experiments conducted in universities, research institutions, and other areas, such as membrane separation technology research and new material development.

[0068] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A membrane element disassembly device, characterized in that: include: A fixing assembly, the fixing assembly comprising a fixing piece, the fixing piece being detachably connected to the membrane shell where the membrane element to be removed is located; A working component, which includes a center rod, an expansion pad and a driver. The center rod can be slidably extended into the membrane shell, and one end of the center rod extending into the membrane shell is detachably connected to the expansion pad. The expansion pad is made of elastic material, and the expansion pad can be abutted against the membrane element to be disassembled. The area of ​​the abutting surface between the expansion pad and the membrane element to be disassembled is smaller than the area of ​​the membrane element to be disassembled. The other end of the center rod is transmission-connected to the driver; the center rod drives the expansion pad to slide back and forth in the membrane shell, and can push the membrane element to be disassembled in the membrane shell to realize the disassembly of the membrane element to be disassembled.

2. The membrane element disassembly device according to claim 1, characterized in that: When the fixing member is connected to the membrane shell, the fixing member and the membrane shell are connected by a fixing belt; or the fixing member and the membrane shell are plug-connected, and the fixing member is sleeved on the outside of the membrane shell.

3. The membrane element disassembly device according to claim 2, characterized in that: The fixing assembly further includes a fixing disk connected to the fixing member. The fixing disk can abut against the axial end surface of the membrane shell, and the center rod can slidably pass through the fixing disk and extend into the membrane shell.

4. The membrane element disassembly device according to claim 3, characterized in that: The working assembly also includes a propeller, which is rotatably arranged on the fixed disk. The output end of the driver is transmission-connected to the propeller, and the propeller is transmission-connected to the center rod to drive the center rod to slide back and forth.

5. The membrane element disassembly device according to claim 4, characterized in that: The propulsion member is threadedly connected to the center rod to form a ball screw mechanism.

6. The membrane element disassembly device according to claim 5, characterized in that: The pushing member is sleeved on the outside of the central rod and the two are coaxially arranged.

7. The membrane element disassembly device according to claim 4, characterized in that: A limiting element is provided between the propulsion member and the center rod to limit the extreme position of the reciprocating sliding of the center rod.

8. The membrane element disassembly device according to any one of claims 1 to 7, characterized in that: The length of the central rod can be adjusted.

9. The membrane element disassembly device according to claim 8, characterized in that: The central rod is a split structure, and the central rod includes a plurality of branch rod segments. Adjacent branch rod segments are detachably connected, and adjacent branch rod segments are threadedly connected or snap-connected.

10. The membrane element disassembly device according to any one of claims 1 to 7, characterized in that: The expansion pad is a columnar structure, and the expansion pad is connected to the center rod by clamping.

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