A membrane module tension spring differential pressure detection device

Abstract

The utility model discloses a kind of membrane module tension spring differential pressure detection devices, including mounting seat, moving frame structure, dynamometer and thrust sheet, the moving frame structure is placed on the mounting seat and can slide along the Y direction of mounting seat, installation area for installing membrane module is equipped on the mounting seat, the installation area is placed on Y direction;The dynamometer is placed on the both sides of the moving frame structure, the end of thrust sheet and dynamometer is connected and is used to contact with the membrane module on mounting seat, the thrust sheet can be moved along the Y direction relative to dynamometer;The utility model tests the tension force differential pressure of both sides of membrane module, according to the result of test, it is guaranteed that the tension force of both ends of membrane module is close to same, greatly avoid the problem that self run deviation occurs when fixing belt on membrane module high-speed rotation, prolongs the service life of membrane module;The utility model has simple structure, and it is convenient to operate.

Description

Technical Field

[0001] This utility model relates to the field of printing equipment technology, and in particular to a membrane module tension spring differential pressure detection device. Background Technology

[0002] A fuser is a key component in an electronic imaging system that fixes toner onto the recording medium by heating, melting, and compressing it. This device typically consists of upper and lower opposing bodies that form a fixing zone under pressure and rotate relative to each other at the same speed. For example, an upper roller is formed by a heating lamp, a pressure-applying cotton assembly, and a fixing film that transmits heat and pressure. A lower roller is formed by a wear-resistant, high-temperature-resistant, and non-stick fluorine sleeve, elastically deformable silicone rubber, and an iron core. The final image quality of the recording medium is directly related to the temperature and pressure settings of the fuser. For a specific structure of the fuser, refer to a fuser assembly and fuser in patent number CN219417988U.

[0003] The pressure of the fuser is mainly regulated by a set of compressible springs in the membrane assembly. If the pressure is too high, it will cause paper wrinkling, ghosting, and affect the lifespan of the fuser; if the pressure is too low, it will cause indeterminate fusing. When the tension of the springs on both sides of the membrane assembly of the fuser is different, the fusing belt will deviate to one side, seriously affecting the lifespan of the fusing film in the fuser. Current technology cannot measure this pressure difference. It can only ensure the consistency of tension at both ends by reducing the tolerance zone of the component mounting position and managing the spring force values ​​in sections for inventory. Reducing the tolerance zone brings a series of difficulties to the production of sheet metal parts and injection molded parts, such as high mold precision requirements, difficulty in machine adjustment, and reduced pass rate, all of which will directly affect the increase in cost. The spring force requirements are more stringent, requiring them to be stored in sections within a certain range. There are uncontrollable risks in inventory management and multiple processes such as workshop material requisition and assembly. Utility Model Content

[0004] The purpose of this utility model is to provide a membrane module tension spring differential pressure detection device, which solves the problem that the existing technology cannot measure the pressure difference of the spring tension force on both sides of the fuser membrane module.

[0005] This invention is implemented as follows: A membrane module tension spring differential pressure detection device is provided, comprising a mounting base, a movable frame structure, a force gauge, and a thrust plate. The movable frame structure is placed on the mounting base and can slide along the Y direction of the mounting base. The mounting base has a mounting area for mounting the membrane module, and the mounting area is positioned in the Y direction. The force gauge is placed on both sides of the movable frame structure. The thrust plate is connected to the end of the force gauge and is used to contact the membrane module on the mounting base. The thrust plate can move relative to the force gauge along the Y direction.

[0006] The membrane module is installed in the mounting area of ​​the mounting base. A sliding frame structure slides on the mounting base, bringing the thrust plate close to the bearing of the membrane module. When the thrust plate on one side of the sliding frame structure contacts the bearing and the corresponding force gauge displays a value of 0, the value of the force gauge on the other side of the sliding frame structure is observed. By moving the thrust plate relative to the force gauge, the force gauge value on the other side also reaches 0 after contacting the bearing, completing the calibration and ensuring the accuracy of subsequent differential pressure testing. The sliding frame structure then continues to move towards the membrane module. When the value of one force gauge reaches a set value, the sliding frame structure stops moving, and the value of the other force gauge is observed. The tension of the membrane module spring is adjusted based on the difference between the two force gauge values ​​until the difference is within a certain range. This invention tests the differential tension on both sides of the membrane module and adjusts the tension based on the test results to ensure that the tension at both ends of the membrane module is nearly identical. This largely avoids the problem of self-deviation when the fixing belt on the membrane module rotates at high speed, extending the service life of the membrane module. This invention has a simple structure and is easy to operate.

[0007] A further technical solution of this utility model is: the thrust plate and the force measuring instrument are connected by a connecting structure, and the connecting structure is used for the thrust plate to move relative to the force measuring instrument.

[0008] The thrust plate and the force gauge are connected by a connecting structure. The connecting structure is designed to allow the thrust plate to move relative to the force gauge in the Y direction, but the thrust plate itself will not deviate, thus ensuring contact between the thrust plate and the membrane module bearing.

[0009] A further technical solution of this utility model is: the connection structure includes a force measuring instrument connector, a bearing component, a fixed flange, and a thrust plate connector. The force measuring instrument connector is placed at one end of the fixed flange and is threadedly connected to the force measuring instrument. The thrust plate connector is connected to the other end of the fixed flange through the bearing component, and the thrust plate connector is connected to the thrust plate.

[0010] The force gauge connector and the thrust plate connector are coaxial through a fixed flange. During the rotation of the force gauge connector, the force gauge connector can move relative to the force gauge in the Y direction. Since the thrust plate is connected to the fixed flange through a bearing, the thrust plate only moves in the Y direction and does not rotate during the rotation of the force gauge connector, ensuring the consistency of the contact position between the thrust plate and the bearing on both sides, and further ensuring the accuracy of the differential pressure detection results.

[0011] A further technical solution of this utility model is that the fixed flange is annular.

[0012] A further technical solution of this utility model is: the movable frame structure includes a force measuring instrument bracket, a nut positioning block, and a handle assembly. The force measuring instrument bracket is slidably mounted on the mounting base. The nut positioning block is placed on the force measuring instrument bracket and connected to the mounting base through the handle assembly. The force measuring instrument bracket can slide along the Y direction by rotating the handle assembly.

[0013] By rotating the handle assembly, the force gauge bracket slides on the mounting base, thereby causing the force gauge on the force gauge bracket to move toward or away from the membrane assembly.

[0014] A further technical solution of this utility model is: the handle assembly includes a screw positioning block, a screw, and a screw handle. The screw positioning block is connected to the mounting base. One end of the screw passes through the screw positioning block and is connected to the nut positioning block. The other end of the screw is connected to the screw handle.

[0015] The screw positioning block is fixed at one end of the mounting base. The screw passes through the screw positioning block and connects to the nut positioning block. By rotating the handle on the screw, the nut positioning block can be moved along the Y direction, thereby causing the force gauge bracket connected to the nut positioning block to move along the Y direction.

[0016] A further technical solution of this utility model is: the nut positioning block is placed below the middle of the force measuring instrument bracket, and the force measuring instrument is placed on both sides above the force measuring instrument bracket.

[0017] The nut positioning block is located in the lower middle part of the force gauge bracket. It makes full use of the space below the nut positioning block. Together with the force gauge on both sides above the force gauge bracket, it can ensure the stability of the force gauge bracket during the sliding process, thereby ensuring the stable movement of the force gauge.

[0018] A further technical solution of this utility model is: slide rails are provided on both sides below the force measuring instrument bracket, a slide rail is provided on the mounting base that is slidably connected to the slide rails, and slide rail positioning blocks are provided in front of and behind the slide rails.

[0019] The force gauge bracket is connected to the slide rail via a slide rail, thereby enabling the force gauge bracket to move on the mounting base.

[0020] A further technical solution of this utility model is: the mounting base is provided with a guide block, which is arranged along the Y direction to guide and limit the thrust plate.

[0021] The guide block further ensures the stability of the thrust plate during movement, prevents deviation, and can achieve limit positioning, thus ensuring the accuracy of the test results.

[0022] A further technical solution of this utility model is: the detection device further includes a continuity tester, which is used to detect the continuity between the thrust plate and the membrane module.

[0023] Before use, the thrust plate is calibrated and its position is corrected by the buzzer on the continuity tester. One end of the wiring harness on the continuity tester is connected to the bearing of the product under test, and the other end is connected to the thrust plate. When the thrust plate contacts the bearing, the corresponding continuity tester is turned on and emits a buzzer sound.

[0024] The beneficial effects of this utility model are as follows: The membrane module is installed in the mounting area of ​​the mounting base. The sliding frame structure slides on the mounting base, bringing the thrust plate close to the bearing of the membrane module. When the thrust plate on one side of the sliding frame structure contacts the bearing and the corresponding force gauge displays a value of 0, the value of the force gauge on the other side of the sliding frame structure is observed. By moving the thrust plate relative to the force gauge, the value of the force gauge on the other side also reaches 0 after the thrust plate contacts the bearing, completing the calibration and ensuring the accuracy of subsequent differential pressure detection. Then, the sliding frame structure continues to move towards the membrane module. When the value of one force gauge reaches the set value, the sliding frame structure stops moving, and the value of the other force gauge is observed. The tension of the membrane module spring is adjusted according to the difference between the values ​​of the two force gauges until the difference is within a certain range. This utility model tests the differential tension on both sides of the membrane module and adjusts the tension based on the test results to ensure that the tension at both ends of the membrane module is nearly the same, which largely avoids the problem of self-deviation when the fixing belt on the membrane module rotates at high speed, extending the service life of the membrane module. This utility model has a simple structure and is easy to operate.

[0025] This invention significantly reduces the requirements for parts, allowing for adjustment of spring tension differentials by adding shims. This reduces both material and management costs.

[0026] This invention can achieve the purpose of adjustment simply by rotating the thread, and the rotation of the thread before and after adjustment is more flexible and controllable, improving work efficiency and further improving accuracy; it avoids the problem that the position of the screw needs to be adjusted every time for initial adjustment, which is inconvenient and difficult to operate, has a large error, may require multiple adjustments, consumes more time and has lower accuracy, and the consistency after each adjustment is poor. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the membrane module provided by this utility model;

[0028] Figure 2 This is a schematic diagram of the structure of a membrane module tension spring differential pressure detection device provided by this utility model;

[0029] Figure 3 This utility model provides Figure 2 Exploded view;

[0030] Figure 4This is a schematic diagram of the structure of a membrane module tension spring differential pressure detection device in use, provided by this utility model;

[0031] Figure 5 This utility model provides Figure 4 Exploded view;

[0032] Figure 6 This is an exploded view of the mounting base provided by this utility model;

[0033] Figure 7 This is a schematic diagram of the structure on the mounting base provided by this utility model;

[0034] Figure 8 This is an exploded view of the force measuring instrument and the thrust plate provided by this utility model connected by a connecting structure;

[0035] Figure 9 This is an exploded view of the force measuring instrument provided by this utility model installed on the force measuring instrument bracket.

[0036] Reference numerals in the attached drawings: 1. Base, 2. Membrane module base, 3. Slide rail, 4. Slide track, 5. Slide rail positioning block, 6. Force gauge bracket, 7. Force gauge, 8. Thrust plate, 9. Guide block, 10. Thrust plate connector, 11. Screw, 12. Screw positioning block, 13. Screw handle, 14. Nut positioning block, 15. Continuity tester, 16. Force gauge connector, 17. Bearing component, 18. Fixing flange, 100. Membrane module, 101. Tension spring, 102. Bearing. Detailed Implementation

[0037] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0038] Example 1:

[0039] like Figure 1-9 The device for detecting the differential pressure of a membrane module tension spring, as shown, includes a mounting base, a movable frame structure, a force gauge 7, and a thrust plate 8. The movable frame structure is placed on the mounting base and can slide along the Y direction of the mounting base. The mounting base has a mounting area for mounting the membrane module 100, and the mounting area is located in the Y direction. The force gauge 7 is placed on both sides of the movable frame structure. The thrust plate 8 is connected to the end of the force gauge 7 and is used to contact the membrane module 100 on the mounting base. The thrust plate 8 can move relative to the force gauge 7 along the Y direction.

[0040] The membrane module is installed in the mounting area of ​​the mounting base. A sliding frame structure slides on the mounting base, bringing the thrust plate close to the bearing of the membrane module. When the thrust plate on one side of the sliding frame structure contacts the bearing and the corresponding force gauge displays a value of 0, the value of the force gauge on the other side of the sliding frame structure is observed. By moving the thrust plate relative to the force gauge, the force gauge value on the other side also reaches 0 after contacting the bearing, completing the calibration and ensuring the accuracy of subsequent differential pressure testing. The sliding frame structure then continues to move towards the membrane module. When the value of one force gauge reaches a set value, the sliding frame structure stops moving, and the value of the other force gauge is observed. The tension of the membrane module spring is adjusted based on the difference between the two force gauge values ​​until the difference is within a certain range. This invention tests the differential tension on both sides of the membrane module and adjusts the tension based on the test results to ensure that the tension at both ends of the membrane module is nearly identical. This largely avoids the problem of self-deviation when the fixing belt on the membrane module rotates at high speed, extending the service life of the membrane module. This invention has a simple structure and is easy to operate.

[0041] See the schematic diagram of the membrane module. Figure 1 The bearing 102 of the membrane assembly is connected to the frame at both ends by tension springs 101. Based on the pressure difference of the tension springs 101 at both ends detected by this utility model, shims are installed at the contact points between the tension springs 101 and the frame to adjust the force difference between the two ends to not exceed the set value.

[0042] In this embodiment, the thrust plate 8 and the force measuring instrument 7 are connected by a connecting structure, which is used for the thrust plate 8 to move relative to the force measuring instrument 7.

[0043] The thrust plate and the force gauge are connected by a connecting structure. The connecting structure is designed to allow the thrust plate to move relative to the force gauge in the Y direction, but the thrust plate itself will not deviate, thus ensuring contact between the thrust plate and the membrane module bearing.

[0044] In this embodiment, the connection structure includes a force gauge connector 16, a bearing 17, a fixed flange 18, and a thrust plate connector 10. The force gauge connector 16 is placed at one end of the fixed flange 18 and is threadedly connected to the force gauge 7. The thrust plate connector 10 is connected to the other end of the fixed flange 18 through the bearing 17, and the thrust plate connector 10 is connected to the thrust plate 8.

[0045] The force gauge connector and the thrust plate connector are coaxial through a fixed flange. During the rotation of the force gauge connector, the force gauge connector can move relative to the force gauge in the Y direction. Since the thrust plate is connected to the fixed flange through a bearing, the thrust plate only moves in the Y direction and does not rotate during the rotation of the force gauge connector, ensuring the consistency of the contact position between the thrust plate and the bearing on both sides, and further ensuring the accuracy of the differential pressure detection results.

[0046] During the rotation of the force gauge connector, the force gauge connector can move relative to the force gauge in the Y direction, avoiding the use of a rigid connection between the force gauge and the thrust plate. This avoids the need to tighten screws and adjust the position of the force gauge to achieve the desired result. When the tolerance of the frame or other parts is large, this requires frequent loosening and tightening of screws, which is difficult to operate, has large adjustment errors, and consumes a lot of time.

[0047] In this embodiment, the fixed flange 18 is annular.

[0048] In this embodiment, the thrust plate 8 is L-shaped, and the end of the pusher blade connector 10 away from the thrust plate 8 is cylindrical and has an interference fit with the bearing component 17.

[0049] like Figure 8 Install the force gauge connector 16, fixing flange 18, bearing 17, thrust plate connector 10, and thrust plate 8 sequentially on the force gauge 7. Connect the outer diameters of the force gauge connector 16 and bearing 17 together using the fixing flange 18; strong adhesive can be used for bonding. Fit one end of the thrust plate connector 10 into the inner diameter of the bearing 17 using an interference fit. After assembly, thread the force gauge connector 16 to the force gauge 7, and then install and fix the thrust plate 8 onto the other end of the thrust plate connector 10. By rotating the force gauge connector 16, the thrust plate 8 can move back and forth without rotation.

[0050] In this embodiment, the mobile frame structure includes a force gauge bracket 6, a nut positioning block 14, and a handle assembly. The force gauge bracket 6 is slidably mounted on the mounting base. The nut positioning block 14 is placed on the force gauge bracket 6 and connected to the mounting base through the handle assembly. The force gauge bracket 6 can slide along the Y direction by rotating the handle assembly.

[0051] By rotating the handle assembly, the force gauge bracket slides on the mounting base, thereby causing the force gauge on the force gauge bracket to move toward or away from the membrane assembly.

[0052] In this embodiment, the handle assembly includes a screw positioning block 12, a screw 11, and a screw handle 13. The screw positioning block 12 is connected to the mounting base. One end of the screw 11 passes through the screw positioning block 12 and is connected to the nut positioning block 14. The other end of the screw 11 is connected to the screw handle 13.

[0053] The screw positioning block is fixed at one end of the mounting base. The screw passes through the screw positioning block and connects to the nut positioning block. By rotating the handle on the screw, the nut positioning block can be moved along the Y direction, thereby causing the force gauge bracket connected to the nut positioning block to move along the Y direction.

[0054] In this embodiment, the nut positioning block 14 is placed below the middle of the force measuring instrument bracket 6, and the force measuring instrument 7 is placed on both sides above the force measuring instrument bracket 6.

[0055] The nut positioning block is located in the lower middle part of the force gauge bracket. It makes full use of the space below the nut positioning block. Together with the force gauge on both sides above the force gauge bracket, it can ensure the stability of the force gauge bracket during the sliding process, thereby ensuring the stable movement of the force gauge.

[0056] In this embodiment, slide rails 4 are provided on both sides below the force gauge bracket 6, and slide rails 3 are provided on the mounting base and slidably connected to the slide rails 4. Slide rail positioning blocks 5 are provided in front of and behind the slide rails 3.

[0057] The force gauge bracket is connected to the slide rail via a slide rail, thereby enabling the force gauge bracket to move on the mounting base.

[0058] In this embodiment, the force gauge bracket 6 is U-shaped, and the force gauges 7 are symmetrically arranged on the force gauge bracket 6 to ensure the stability of the structure.

[0059] In this embodiment, the handle assembly is positioned at the center of the force gauge bracket 6 to ensure the stability of the force gauge bracket 6 during adjustment.

[0060] In this embodiment, the mounting base is provided with a guide block 9, which is arranged along the Y direction to guide and limit the thrust plate 8.

[0061] The guide block further ensures the stability of the thrust plate during movement, prevents deviation, and can achieve limit positioning, thus ensuring the accuracy of the test results.

[0062] In this embodiment, the detection device further includes a continuity tester 15, which is used to detect the continuity between the thrust plate 8 and the membrane module 100.

[0063] Before use, the thrust plate is calibrated and its position is corrected by the buzzer on the continuity tester. One end of the wiring harness on the continuity tester is connected to the bearing of the product under test, and the other end is connected to the thrust plate. When the thrust plate contacts the bearing, the corresponding continuity tester is turned on and emits a buzzer sound.

[0064] In this embodiment, the mounting base includes a base 1 and a membrane module base 2, the membrane module base 2 is placed on the base 1, and the mounting area is placed on the membrane module base 2.

[0065] Before use, the thrust plate of this invention is calibrated by using a buzzer on a continuity tester for position correction. One end of the wiring harness on the continuity tester is connected to the bearing of the product under test, and the other end is connected to the thrust plate. The thread on the end of the force gauge is used to connect to the threaded connection structure. Rotating the force gauge connector adjusts the front and rear position of the thrust plate so that both sides can simultaneously contact the bearing with zero thrust. Then, continue to rotate the screw handle to make both force gauges move forward simultaneously, ensuring the same displacement while measuring the tension difference between the two ends of the membrane assembly. When the data of one force gauge reaches the set value (6N in this embodiment), the data of the other force gauge is read. Based on the difference, a shim is installed at the contact point between the product spring and the frame to adjust the force difference between the two ends so that it does not exceed the set value (0.3N in this embodiment).

[0066] like Figure 6 Connect membrane module base 2 to base 1 to allow membrane module 100 to be accurately installed and positioned on the device. The connection between membrane module base 2 and base 1 can be a bolt connection.

[0067] like Figure 7 Install slide rail 3, slide rail positioning block 5, and continuity tester 15 on base 1. Bolt connection can be selected for the connection method.

[0068] like Figure 9 Install the slide rail 4, the nut positioning block 14, and the assembled force measuring instrument 7 sequentially on the force measuring instrument bracket 6.

[0069] like Figure 3 : Will Figure 9 The assembled force gauge bracket 6 is installed onto the slide rail 3, and the two outer slide rail positioning blocks 5 are installed for limiting. Then, the screw 11 is installed onto the nut positioning block 14, the screw positioning block 12 is installed, and the position of the nut positioning block 14 is adjusted according to the hole position of the screw positioning block 12. Finally, the screw handle 13 is installed.

[0070] like Figure 4 Install the membrane module 100 onto the device. After rotating the screw handle 13 to move the thrust plate 8 and the membrane module 100 a certain distance, install the guide block 9 onto the base 1. Then rotate the screw handle 13 again to attach the thrust plate 8 to the bearing 102 of the membrane module 100, and fix the guide block 9 onto the base 1.

[0071] like Figure 4-5Rotate the screw handle 13, causing the screw positioning block 12 to drive the nut positioning block 14, force gauge bracket 6, force gauge 7, and thrust plate 8 to move back and forth. When one end of the thrust plate 8 just contacts the bearing 102 of the membrane module 100 and the force gauge 7 reads 0N, rotate the other end of the force gauge connector 16 so that the other end of the thrust plate 8 also contacts the bearing 102 on the other side of the membrane module 100, and the reading of the force gauge 7 on that side also reads 0N. Continue rotating the screw handle 13 and observe the reading of the force gauge 7. When the reading at one end reaches 6N (a set value for this product, not a fixed requirement), stop rotating and read the reading at the other end. Then reverse the screw handle 13. When the thrust plates 8 at both ends are completely away from the bearing 102 of the membrane module 100, add a shim to the bottom of the tension spring 101 of the membrane module 100 at the end with the lower reading for force compensation. After completion, repeat the above operation, adjusting with shims of different thicknesses until the difference between the two ends does not exceed 0.3N (the value is set according to specific usage requirements and is not fixed). This is considered qualified, and proceed to the next step.

[0072] This invention tested the tension pressure difference on both sides of the membrane module, and adjusted the tension based on the test results to ensure that the tension at both ends of the membrane module is nearly the same. This largely avoids the problem of self-deviation when the fixing belt on the membrane module rotates at high speed, and extends the service life of the membrane module.

[0073] The connecting device in this invention achieves universal connection of the thrust plate through the use of bearings. When used with the guide block, it enables the thrust plate to move back and forth without rotation by rotating through the thread of the force gauge itself and the rotation of its own connector.

[0074] This utility model device has undergone multiple small-batch verifications (no less than 500 fusers). In practical use, it is convenient to operate and can effectively identify membrane modules with large tension pressure differences. After adjustment and assembly, no fuser belt deviation issues occurred during testing. The above proves the effectiveness of this device.

[0075] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A membrane module tension spring differential pressure detection device, characterized in that: It includes a mounting base, a movable frame structure, a force gauge (7), and a thrust plate (8). The movable frame structure is placed on the mounting base and can slide along the Y direction of the mounting base. The mounting base is provided with a mounting area for mounting the membrane module (100), and the mounting area is located in the Y direction. The force gauge (7) is placed on both sides of the movable frame structure. The thrust plate (8) is connected to the end of the force gauge (7) and is used to contact the membrane module (100) on the mounting base. The thrust plate (8) can move relative to the force gauge (7) along the Y direction.

2. The membrane module tension spring differential pressure detection device according to claim 1, characterized in that: The thrust plate (8) and the force measuring instrument (7) are connected by a connecting structure, which is used for the thrust plate (8) to move relative to the force measuring instrument (7).

3. The membrane module tension spring differential pressure detection device according to claim 2, characterized in that: The connection structure includes a force gauge connector (16), a bearing (17), a fixed flange (18), and a thrust plate connector (10). The force gauge connector (16) is placed at one end of the fixed flange (18) and threadedly connected to the force gauge (7). The thrust plate connector (10) is connected to the other end of the fixed flange (18) through the bearing (17). The thrust plate connector (10) is connected to the thrust plate (8).

4. The membrane module tension spring differential pressure detection device according to claim 3, characterized in that: The fixed flange (18) is annular.

5. A membrane module tension spring differential pressure detection device according to any one of claims 1-4, characterized in that: The mobile frame structure includes a force measuring instrument bracket (6), a nut positioning block (14), and a handle assembly. The force measuring instrument bracket (6) is slidably mounted on the mounting base. The nut positioning block (14) is placed on the force measuring instrument bracket (6) and connected to the mounting base through the handle assembly. The force measuring instrument bracket (6) can slide along the Y direction by rotating the handle assembly.

6. The membrane module tension spring differential pressure detection device according to claim 5, characterized in that: The handle assembly includes a screw positioning block (12), a screw (11) and a screw handle (13). The screw positioning block (12) is connected to the mounting base. One end of the screw (11) passes through the screw positioning block (12) and is connected to the nut positioning block (14). The other end of the screw (11) is connected to the screw handle (13).

7. The membrane module tension spring differential pressure detection device according to claim 5, characterized in that: The nut positioning block (14) is placed below the middle of the force measuring instrument bracket (6), and the force measuring instrument (7) is placed on both sides above the force measuring instrument bracket (6).

8. The membrane module tension spring differential pressure detection device according to claim 5, characterized in that: The force measuring instrument bracket (6) has slide rails (4) on both sides below it, and the mounting base has a slide rail (3) that is slidably connected to the slide rails (4). The slide rail (3) has a slide rail positioning block (5) at the front and rear.

9. A membrane module tension spring differential pressure detection device according to any one of claims 1-4, characterized in that: The mounting base is provided with a guide block (9), which is arranged along the Y direction to guide and limit the thrust plate (8).

10. A membrane module tension spring differential pressure detection device according to any one of claims 1-4, characterized in that: The detection device also includes a continuity tester (15), which is used to detect the continuity between the thrust plate (8) and the membrane module (100).

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