Membrane cleaning device and using method thereof

Abstract

The invention discloses a diaphragm cleaning device and a using method thereof, and belongs to the technical field of pressure sensor manufacturing. Through the arrangement of the multi-layer fixing structure, it is ensured that the diaphragm does not move in the cleaning process, the stability and position accuracy of the diaphragm in the cleaning process are ensured, and therefore the risk that a pressure sensor filling liquid is polluted by stains of the corrugated diaphragm is reduced, and the product performance and reliability are improved; the first strip-shaped groove and the second strip-shaped groove provide an accurate placement position for the diaphragm; the length and the width of the second strip-shaped groove are larger than the diameter and the thickness of the membrane respectively, it is guaranteed that the membrane can be easily placed and is not prone to falling off, and meanwhile cleaning liquid is allowed to make full contact with the surface of the membrane. Flow guide holes corresponding to the second strip-shaped grooves are formed in the top fixing plate and the bottom fixing plate, so that the cleaning liquid can smoothly enter the second strip-shaped grooves, and the diaphragm is cleaned in all directions; the diameter of the flow guide hole is smaller than that of the diaphragm, so that the diaphragm is prevented from being flushed out in the cleaning process.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure sensor manufacturing, and in particular to a diaphragm cleaning device and a method for using the same. Background Art

[0002] As a basic component for pressure measurement, pressure sensors play a vital role in many fields such as industrial automation, automobile manufacturing, aerospace, and medical equipment. In isolated pressure sensors, the corrugated diaphragm is not only the core component of pressure sensing, but also undertakes the important task of isolating the pressure chip from the medium to be measured, effectively protecting the chip from corrosion by external media and ensuring the long-term stable operation of the sensor.

[0003] However, during the processing of the corrugated diaphragm, some processing stains, such as oil stains, metal debris, etc., often remain on its surface. If these stains are not cleaned in time, they will mix with the filling liquid in the pressure sensor during the subsequent packaging process, which will have an adverse effect on the performance of the sensor. Specifically, the stains will adhere to the surface of the piezoresistive chip, interfere with the bridge resistance between the measurement bridges, and interfere with the measurement of the pressure signal; at the same time, the stains may also change the physical properties of the filling liquid, such as viscosity, density, etc., thereby affecting the measurement accuracy and stability of the sensor.

[0004] Traditional cleaning methods often use manual immersion cleaning, which is not only inefficient, but also difficult to ensure the cleaning quality and integrity of the diaphragm. Manual operation is not only time-consuming and laborious, but may also cause scratches or deformation on the diaphragm surface due to improper operation, further affecting the performance and reliability of the sensor. Although there are some patent documents related to the cleaning of corrugated diaphragms, such as patent document CN118847809A discloses a method for using a corrugated diaphragm pressing device, specifically: clean the cut circular diaphragm to ensure that there is no excess material and no scratches on the surface; patent document CN118650435A discloses a corrugated diaphragm forming method based on laser processing, specifically, the finished diaphragm is cleaned and blown dry and then inspected. If it is qualified, the corrugated diaphragm forming process is completed, and if it is unqualified, it is scrapped; patent document CN118603283A discloses a method for making a double-membrane structure all-quartz optical fiber sound pressure sensor, specifically, the flat circular diaphragm is placed in deionized water, ultrasonically cleaned, and naturally dried at room temperature, thereby completing the preparation of a corrugated diaphragm based on the diaphragm as a transducer. However, these documents mainly focus on the cleaning process in the pressing, molding or sensor manufacturing methods of the diaphragm, and do not propose a special cleaning device and effective method for the stain problem on the surface of the diaphragm.

[0005] That is to say, there is no special cleaning device and method for the problem of stains on the surface of the membrane. Therefore, how to design an efficient membrane cleaning device that can ensure the integrity of the membrane has become a technical problem that the current technicians in this field need to solve urgently. Summary of the invention

[0006] The object of the present invention is to provide a diaphragm cleaning device and a method for using the same, so as to overcome the problems in the prior art of low diaphragm cleaning efficiency, difficulty in ensuring cleaning quality and vulnerability of diaphragm integrity.

[0007] The present invention solves the above technical problems through the following technical solutions: A membrane cleaning device comprises a top fixing plate, a first positioning plate, a second positioning plate and a bottom fixing plate, which are fixedly connected in sequence from top to bottom during cleaning; A plurality of first strip grooves are arranged at the same position of the first positioning plate and the second positioning plate, a plurality of second strip grooves are arranged on each first strip groove, the second strip grooves are perpendicular to the axial direction of the first strip grooves, the length of the second strip grooves is greater than the diameter of the diaphragm, the width of the second strip grooves is greater than the thickness of the diaphragm, and the sum of the thickness of the first positioning plate and the second positioning plate is greater than the diameter of the diaphragm; Both the top fixing plate and the bottom fixing plate are provided with flow guide holes corresponding to the second strip grooves, and the diameter of the flow guide holes is smaller than the diameter of the diaphragm.

[0008] Furthermore, the second positioning plate and the bottom fixing plate are an integrated structure and are tightly connected by gluing.

[0009] Furthermore, the thickness of the first positioning plate is greater than the thickness of the second positioning plate.

[0010] Furthermore, the shape of the diaphragm is a circle with corrugations, and the corrugations are one of sinusoidal corrugations, triangular corrugations or trapezoidal corrugations, and are concentrically distributed.

[0011] Furthermore, the diameter of the diaphragm ranges from 10 to 30 mm.

[0012] Furthermore, the length of the second strip groove ranges from 11 to 31 mm, and the sum of the thickness of the first positioning plate and the second positioning plate ranges from 11 to 31 mm.

[0013] Furthermore, a gas overflow hole is provided on the top fixing plate.

[0014] Furthermore, it also includes bolts, and the top fixing plate, the first positioning plate, the second positioning plate and the bottom fixing plate are respectively provided with a first positioning hole, a second positioning hole, a third positioning hole and a fourth positioning hole, and the bolts connect the first positioning hole, the second positioning hole, the third positioning hole and the fourth positioning hole in sequence from top to bottom.

[0015] Furthermore, there are four first positioning holes, which are evenly distributed at the boundary positions of the top fixing plate. The second positioning holes, the third positioning holes and the fourth positioning holes correspond to the positions of the first positioning holes and are evenly distributed at the boundary positions of the first positioning plate, the second positioning plate and the bottom fixing plate respectively.

[0016] A method for using a membrane cleaning device, using the above-mentioned membrane cleaning device, comprises the following steps: Before cleaning, the first positioning plate, the second positioning plate and the bottom fixing plate are fixedly installed, and the diaphragm is placed in the second strip grooves of the first positioning plate and the second positioning plate. After placement, the top fixing plate is fixedly installed; The entire membrane cleaning device is placed in an ultrasonic cleaning machine, and the cleaning liquid enters the second strip groove through the guide hole to clean the membrane; After cleaning is completed, the top fixing plate and the first positioning plate are disassembled, so that the bottom of the cleaned diaphragm is placed in the second positioning plate and the bottom fixing plate for production use.

[0017] Compared with the prior art, the positive and progressive effects of the present invention are: The diaphragm cleaning device provided by the present invention forms a multi-layer fixed structure by a top fixing plate, a first positioning plate, a second positioning plate and a bottom fixing plate which are fixedly connected in sequence from top to bottom, thereby ensuring that the diaphragm will not move during the cleaning process, ensuring the stability and position accuracy of the diaphragm during the cleaning process, thereby reducing the risk of the corrugated diaphragm contaminating the pressure sensor filling liquid with stains, and improving product performance and reliability; a plurality of first strip grooves and a plurality of second strip grooves perpendicular to the first strip grooves arranged on the first positioning plate and the second positioning plate provide a precise placement position for the diaphragm; the length and width of the second strip grooves are respectively greater than the diameter and thickness of the diaphragm, ensuring that the diaphragm can be easily placed and is not easy to fall off, while allowing the cleaning liquid to fully contact the surface of the diaphragm; the guide holes corresponding to the second strip grooves arranged on the top fixing plate and the bottom fixing plate enable the cleaning liquid to smoothly enter the second strip grooves and clean the diaphragm in all directions; the diameter of the guide hole is smaller than the diameter of the diaphragm, thereby preventing the diaphragm from being flushed out during the cleaning process.

[0018] Furthermore, the integrated structure of the second positioning plate and the bottom fixing plate enhances the stability and convenience of the device and reduces the risk of poor cleaning effect or diaphragm damage due to loose components.

[0019] Furthermore, the thickness of the first positioning plate is greater than that of the second positioning plate, so that it is convenient for production and use after cleaning.

[0020] Furthermore, the diaphragm cleaning device is suitable for diaphragms with circular, rectangular or square cross-sections and has wide applicability.

[0021] Furthermore, the gas overflow holes on the top fixing plate help to release the gas inside the device during the cleaning process, preventing gas accumulation from negatively affecting the cleaning effect.

[0022] Furthermore, the top fixing plate, the first positioning plate, the second positioning plate and the bottom fixing plate are connected by bolts, thereby ensuring the stability and firmness of the device during the cleaning process.

[0023] Furthermore, the uniform distribution of the positioning holes further enhances the overall stability of the device.

[0024] The method of use provided by the present invention has simple and clear installation steps before cleaning, the cleaning liquid can fully contact the diaphragm during the cleaning process, and the steps of disassembling and removing the diaphragm after cleaning are also simple. The whole process is convenient for placing and removing the diaphragm, reduces the complexity of manual operation, and can improve cleaning efficiency and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings in the specification are used to provide further understanding of the present invention and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0026] Figure 1 It is a schematic diagram of the overall structure of the membrane cleaning device; Figure 2 is a detailed schematic diagram of the second positioning plate and the bottom fixing plate; Figure 3 is a top view of the first positioning plate; Among them, 1 is the top fixing plate, 2 is the first positioning plate, 3 is the second positioning plate, 4 is the bottom fixing plate, 5 is the first strip groove, 6 is the second strip groove, 7 is the guide hole, 1-1 is the first positioning hole, 2-1 is the second positioning hole, 3-1 is the third positioning hole and 4-1 is the fourth positioning hole. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] 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.

[0030] In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0031] In addition, it should 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 mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments, which are intended to explain the present invention rather than to limit it.

[0033] See also Figure 1 and Figure 2 , a membrane cleaning device, comprising a top fixing plate 1, a first positioning plate 2, a second positioning plate 3 and a bottom fixing plate 4, which are fixedly connected in sequence from top to bottom during cleaning; See also Figure 3 , a plurality of first strip grooves 5 are arranged at the same position of the first positioning plate 2 and the second positioning plate 3, each of the first strip grooves 5 is arranged with a plurality of second strip grooves 6, the second strip grooves 6 are perpendicular to the axial direction of the first strip grooves 5, the length of the second strip grooves 6 is greater than the diameter of the diaphragm, the width of the second strip grooves 6 is greater than the thickness of the diaphragm, and the sum of the thicknesses of the first positioning plate 2 and the second positioning plate 3 is greater than the diameter of the diaphragm; Both the top fixing plate 1 and the bottom fixing plate 4 are provided with flow guide holes 7 corresponding to the second strip grooves 6 , and the diameter of the flow guide holes 7 is smaller than the diameter of the diaphragm.

[0034] A multi-layer fixed structure is formed by the top fixing plate, the first positioning plate, the second positioning plate and the bottom fixing plate which are fixedly connected in sequence from top to bottom, so as to ensure that the diaphragm will not move during the cleaning process, and ensure the stability and position accuracy of the diaphragm during the cleaning process, thereby reducing the risk of the corrugated diaphragm contaminating the filling liquid of the pressure sensor with stains, and improving product performance and reliability; a plurality of first strip grooves and a plurality of second strip grooves perpendicular to the first strip grooves provided on the first positioning plate and the second positioning plate provide a precise placement position for the diaphragm; the length and width of the second strip grooves are greater than the diameter and thickness of the diaphragm, ensuring that the diaphragm can be easily placed and is not easy to fall off, while allowing the cleaning liquid to fully contact the surface of the diaphragm; the guide holes corresponding to the second strip grooves provided on the top fixing plate and the bottom fixing plate enable the cleaning liquid to smoothly enter the second strip grooves and clean the diaphragm in all directions; the diameter of the guide hole is smaller than the diameter of the diaphragm, preventing the diaphragm from being flushed out during the cleaning process.

[0035] Specifically, the second positioning plate 3 and the bottom fixing plate 4 are an integrated structure, which are tightly connected by gluing; the stability and convenience of the device are enhanced, and the risk of poor cleaning effect or diaphragm damage due to loose components is reduced.

[0036] Specifically, the thickness of the first positioning plate 2 is greater than that of the second positioning plate 3, so that it is convenient for production and use after cleaning.

[0037] Specifically, the shape of the diaphragm is a circle with corrugations, and the corrugations are one of sinusoidal, triangular or trapezoidal corrugations, and are concentrically distributed. The diaphragm cleaning device is suitable for diaphragms with various circular waveforms, such as sinusoidal, triangular, trapezoidal, etc., and has wide applicability.

[0038] Specifically, the diameter of the diaphragm ranges from 10 to 30 mm.

[0039] Specifically, the length of the second strip groove 6 is in the range of 11 to 31 mm, and the sum of the thickness of the first positioning plate 2 and the second positioning plate 3 is in the range of 11 to 31 mm.

[0040] Specifically, a gas overflow hole is provided on the top fixing plate 1, which helps to release the gas inside the device during the cleaning process and prevents the negative impact of gas accumulation on the cleaning effect.

[0041] Preferably, bolts are also included, and the top fixing plate 1, the first positioning plate 2, the second positioning plate 3 and the bottom fixing plate 4 are respectively provided with a first positioning hole 1-1, a second positioning hole 2-1, a third positioning hole 3-1 and a fourth positioning hole 4-1, and the bolts connect the first positioning hole 1-1, the second positioning hole 2-1, the third positioning hole 3-1 and the fourth positioning hole 4-1 from top to bottom in sequence; the top fixing plate, the first positioning plate, the second positioning plate and the bottom fixing plate are connected by bolts, thereby ensuring the stability and firmness of the device during the cleaning process.

[0042] Specifically, there are four first positioning holes 1-1, which are evenly distributed at the boundary position of the top fixed plate 1. The second positioning hole 2-1, the third positioning hole 3-1 and the fourth positioning hole 4-1 correspond to the position of the first positioning hole 1-1, and are evenly distributed at the boundary positions of the first positioning plate 2, the second positioning plate 3 and the bottom fixed plate 4 respectively; the uniform distribution of the positioning holes further enhances the overall stability of the device.

[0043] The present invention also provides a method for using the membrane cleaning device, using the above-mentioned membrane cleaning device, comprising the following steps: Before cleaning, the first positioning plate 2, the second positioning plate 3 and the bottom fixing plate 4 are fixedly installed, and the diaphragm is placed in the second strip groove 6 of the first positioning plate 2 and the second positioning plate 3. After placement, the top fixing plate 1 is fixedly installed; The entire membrane cleaning device is placed in an ultrasonic cleaning machine, and the cleaning liquid enters the second strip groove 6 through the guide hole 7 to clean the membrane; After cleaning is completed, the top fixing plate 1 and the first positioning plate 2 are disassembled, so that the bottom of the cleaned diaphragm is placed in the second positioning plate 3 and the bottom fixing plate 4 for production use.

[0044] The installation steps before cleaning of the method are simple and clear. During the cleaning process, the cleaning liquid can fully contact the diaphragm. The steps of disassembling and removing the diaphragm after cleaning are also simple. The whole process is convenient for placing and removing the diaphragm, reduces the complexity of manual operation, and can improve the cleaning efficiency.

[0045] In a specific embodiment of the present invention, it includes a top fixing plate 1, a first positioning plate 2, a second positioning plate 3 and a bottom fixing plate 4, wherein the second positioning plate 3 and the bottom fixing plate 4 are an integrated structure and are tightly connected by gluing; The cleaning device also includes bolts. The top fixing plate 1, the first positioning plate 2, the second positioning plate 3 and the bottom fixing plate 4 are respectively provided with a first positioning hole 1-1, a second positioning hole 2-1, a third positioning hole 3-1 and a fourth positioning hole 4-1. There are four first positioning holes 1-1, which are evenly distributed at the boundary position of the top fixing plate 1. The second positioning hole 2-1, the third positioning hole 3-1 and the fourth positioning hole 4-1 correspond to the position of the first positioning hole 1-1, and are evenly distributed at the boundary positions of the first positioning plate 2, the second positioning plate 3 and the bottom fixing plate 4, respectively. The bolts are connected in sequence from top to bottom to the first positioning hole 1-1, the second positioning hole 2-1, the third positioning hole 3-1 and the fourth positioning hole 4-1; six first strip grooves 5 are arranged at the same position of the first positioning plate 2 and the second positioning plate 3, and each first strip groove 5 is provided with twenty-five second strip grooves 6, and the second strip grooves 6 are perpendicular to the axial direction of the first strip groove 5. The diaphragm to be cleaned is circular with sinusoidal corrugations and a diameter of 19 mm. The length of the second strip groove 6 is 20 mm. The width of the second strip groove 6 is greater than the thickness of the diaphragm. The thickness of the first positioning plate 2 is 11 mm, and the thickness of the second positioning plate 3 is 9 mm. The top fixing plate 1 and the bottom fixing plate 4 are both provided with guide holes 7 corresponding to the second strip groove 6, and the diameter of the guide hole 7 is 17 mm; a gas overflow hole is provided on the top fixing plate.

[0046] During cleaning, first use four bolts to pass through the third positioning hole 3-1 and the fourth positioning hole 4-1 respectively, and then pass the bolts through the second positioning hole 2-1 of the first positioning plate 2 to install the first positioning plate 2 on the second positioning plate 3, and fix the diaphragm to be cleaned through the second strip groove 6 of the first positioning plate 2 and the strip groove 6 of the second positioning plate 3 in turn. At this time, pass the bolts through the first positioning hole 1-1 of the top fixing plate 1 to install the top fixing plate 1 on the first positioning plate 2, and then put the entire diaphragm cleaning device into an ultrasonic cleaning machine, and the cleaning liquid enters the second strip groove 6 of the first positioning plate 2 and the strip groove 6 of the second positioning plate 3 through the guide hole 7 to clean the diaphragm; after cleaning, disassemble the top fixing plate 1 and the first positioning plate 2, and take out the cleaned diaphragm.

[0047] In summary, the device can be used to completely remove stains on the surface of the diaphragm, while ensuring the physical integrity and performance stability of the diaphragm during the cleaning process.

[0048] Finally, it should be noted that the above-listed embodiments exist only as one or more specific forms of expression of the technical solution of the present invention. Their purpose is to clearly explain the concept, principle and application of the present invention through specific examples, and it is by no means intended to limit the protection scope of the present invention to these specific embodiments. In fact, the real value of the present invention lies in the technical ideas and innovations it proposes, rather than its form of expression or means of implementation.

[0049] For ordinary technicians in the relevant technical field, after in-depth reading and understanding of the technical solution of the present invention, they are fully capable of making various forms of changes, modifications or equivalent substitutions to the specific implementation methods of the invention based on their own professional knowledge and skills. These changes may include but are not limited to: adjusting the value range of technical parameters, optimizing algorithm processes to improve efficiency, replacing some technical components to achieve better compatibility or reduce costs, etc. As long as these changed technical solutions still substantially maintain the technical features claimed for protection by the original invention, that is, they can still achieve the core functions and effects of the present invention, then these changes should be deemed to fall within the scope of protection of the pending claims of the present invention.

[0050] In addition, with the continuous progress and development of technology, new technical means and methods continue to emerge, which also provides broad space for further improvement and perfection of the present invention. Therefore, the protection scope of the present invention should also include those reasonably foreseeable improvements and extensions based on the existing technology. As long as these improvements and extensions do not deviate from the basic principles and core concepts of the present invention, they should be regarded as equivalents of the present invention and are also protected by patent rights.

Claims

1. A membrane cleaning device, characterized in that: It comprises a top fixing plate (1), a first positioning plate (2), a second positioning plate (3) and a bottom fixing plate (4), which are fixedly connected in sequence from top to bottom during cleaning; A plurality of first strip grooves (5) are arranged at the same position of the first positioning plate (2) and the second positioning plate (3), and a plurality of second strip grooves (6) are arranged on each of the first strip grooves (5), the second strip grooves (6) are perpendicular to the axial direction of the first strip grooves (5), the length of the second strip grooves (6) is greater than the diameter of the diaphragm, the width of the second strip grooves (6) is greater than the thickness of the diaphragm, and the sum of the thicknesses of the first positioning plate (2) and the second positioning plate (3) is greater than the diameter of the diaphragm; Both the top fixing plate (1) and the bottom fixing plate (4) are provided with flow guide holes (7) corresponding to the second strip-shaped grooves (6), and the diameter of the flow guide holes (7) is smaller than the diameter of the diaphragm.

2. A membrane cleaning device according to claim 1, characterized in that: The second positioning plate (3) and the bottom fixing plate (4) are an integrated structure and are tightly connected by gluing.

3. A membrane cleaning device according to claim 1, characterized in that: The thickness of the first positioning plate (2) is greater than the thickness of the second positioning plate (3).

4. A membrane cleaning device according to claim 1, characterized in that: The shape of the diaphragm is a circle with corrugations, wherein the corrugations are one of sinusoidal corrugations, triangular corrugations or trapezoidal corrugations and are concentrically distributed.

5. A membrane cleaning device according to claim 4, characterized in that: The diameter of the diaphragm ranges from 10 to 30 mm.

6. A membrane cleaning device according to claim 5, characterized in that: The length of the second strip groove (6) ranges from 11 to 31 mm, and the sum of the thickness of the first positioning plate (2) and the second positioning plate (3) ranges from 11 to 31 mm.

7. A membrane cleaning device according to claim 1, characterized in that: A gas overflow hole is provided on the top fixing plate (1).

8. A membrane cleaning device according to claim 1, characterized in that: The invention also comprises bolts, wherein the top fixing plate (1), the first positioning plate (2), the second positioning plate (3) and the bottom fixing plate (4) are respectively provided with a first positioning hole (1-1), a second positioning hole (2-1), a third positioning hole (3-1) and a fourth positioning hole (4-1), and the bolts sequentially connect the first positioning hole (1-1), the second positioning hole (2-1), the third positioning hole (3-1) and the fourth positioning hole (4-1) from top to bottom.

9. A membrane cleaning device according to claim 8, characterized in that: There are four first positioning holes (1-1) uniformly distributed at the boundary position of the top fixing plate (1); the second positioning hole (2-1), the third positioning hole (3-1) and the fourth positioning hole (4-1) correspond to the positions of the first positioning hole (1-1) and are uniformly distributed at the boundary positions of the first positioning plate (2), the second positioning plate (3) and the bottom fixing plate (4), respectively.

10. A method for using a membrane cleaning device, characterized in that: The membrane cleaning device according to any one of claims 1 to 9 comprises the following steps: Before cleaning, the first positioning plate (2), the second positioning plate (3) and the bottom fixing plate (4) are fixedly installed, and the diaphragm is placed in the second strip grooves (6) of the first positioning plate (2) and the second positioning plate (3). After placement, the top fixing plate (1) is fixedly installed; The entire membrane cleaning device is placed in an ultrasonic cleaning machine, and the cleaning liquid enters the second strip groove (6) through the guide hole (7) to clean the membrane; After cleaning is completed, the top fixing plate (1) and the first positioning plate (2) are disassembled, so that the bottom of the cleaned diaphragm is placed between the second positioning plate (3) and the bottom fixing plate (4) for use in production.

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