Air tightness detection equipment for filter element manufacturing

Abstract

The invention discloses air tightness detection equipment for filter element manufacturing, and the equipment comprises a bottom plate, the top of the bottom plate is fixedly connected with a supporting device, the top of the supporting device is fixedly connected with a fixing device, one side of the top of the bottom plate is fixedly connected with a fixing plate, and one side, close to the supporting device, of the fixing plate is fixedly connected with a detection device. One side of the detection device is fixedly connected with one side of the supporting device.According to the air tightness detection equipment for filter element manufacturing, through the radian design that the inner side of the arc-shaped fixing plate is attached to a filter element, stable support is provided for the filter element, the filter element is kept stable in the moving and placing process, and the detection efficiency is improved; when the sliding blocks slide in the sliding grooves, the sliding blocks make contact with the balls, the friction force generated when the sliding blocks move is greatly reduced through the balls, the arc-shaped fixing plates move more smoothly, clamping and shaking are avoided, the rubber blocks are arranged on the surfaces of the inner sides of the arc-shaped fixing plates, the surface roughness degree is increased, and the filter element is effectively prevented from deviating or rotating in the moving process.

Description

Technical Field

[0001] The invention relates to the technical field of air tightness detection, in particular to an air tightness detection device for filter element manufacturing. Background Art

[0002] Filter element testing equipment is mainly used to test the performance and quality of filter elements. It can evaluate key indicators such as filter accuracy, filter efficiency, and dirt holding capacity of filter elements through a variety of technical means, such as differential pressure detection, flow detection, and particle counting, to ensure that the filter element can effectively filter impurities and meet the requirements of fluid purification in different fields. Air tightness testing equipment is used to detect the sealing performance of various seals, containers, and pipelines. Common detection methods include direct pressure, differential pressure, and helium mass spectrometry leak detection. By filling the object to be tested with gas at a certain pressure and then monitoring the leakage of the gas, it is possible to determine whether there is a leak and the amount of leakage, so as to ensure that the equipment or product will not have safety hazards or performance degradation due to air tightness problems during use.

[0003] The filter element is easy to slip during the air tightness test, and the environment is not closed enough during the air tightness test, which will cause errors in the test. Therefore, we proposed an air tightness test equipment for filter element manufacturing. Summary of the invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: an air tightness detection device for filter element manufacturing, comprising a bottom plate, a support device is fixedly connected to the top of the bottom plate, a fixing device is fixedly connected to the top of the supporting device, a fixing plate is fixedly connected to one side of the top of the bottom plate, a detection device is fixedly connected to one side of the fixing plate close to the supporting device, and one side of the detection device is fixedly connected to one side of the supporting device;

[0005] The supporting device comprises a base, wherein both sides of the inner center position of the base are provided with slide grooves, the inner wall of the slide groove is fixedly connected with a round rod, one end of the round rod passes through and is rotatably connected with a ball, and when the slider slides in the slide groove, it contacts the ball, and the ball greatly reduces the friction force when the slider moves, making the movement of the arc-shaped fixed plate smoother and avoiding jamming and shaking. A rectangular groove is provided at the inner center position of the base, and a linear electric slide rail is fixedly connected to the inner wall of the rectangular groove, and a moving block is fixedly connected to one side of the linear electric slide rail, and a sliding block is slidably connected to the inner wall of the slide groove, and the top of the moving block is fixedly connected with an arc-shaped fixed plate. The arc design of the inner side of the arc-shaped fixed plate that fits the filter element provides a stable support for the filter element, so that it remains stable during movement and placement, and a rubber block is fixedly connected to the inner side of the arc-shaped fixed plate, and the rubber block is arranged on the inner surface of the arc-shaped fixed plate , increasing the surface roughness, effectively preventing the filter element from deflecting or rotating during movement, an arc-shaped hole is opened on the inner side of the arc-shaped fixing plate, and the arc-shaped hole is opened on the inner side of the arc-shaped fixing plate. On the one hand, the local stiffness of the arc-shaped fixing plate is changed, so that it can deform more flexibly when subjected to force, and the stress is evenly distributed, so as to avoid stress concentration and damage to the filter element due to excessive local stiffness. On the other hand, when the filter element is moved, heat is generated due to the large friction of the rubber block. The arc-shaped hole is conducive to air circulation, helps heat dissipation, reduces additional stress concentration caused by factors such as thermal expansion, and further protects the filter element. The bottom of the base is fixedly connected to the top of the bottom plate, and one side of the slider is fixedly connected to the outer side of the arc-shaped fixing plate. A plurality of rubber blocks are provided, and the plurality of rubber blocks are distributed on the inner side of the arc-shaped fixing plate. A plurality of arc-shaped holes are provided, and the plurality of arc-shaped holes are evenly distributed on the inner side of the arc-shaped fixing plate.

[0006] Furthermore, the fixing device includes a U-shaped block, the outer side of the U-shaped block is fixedly connected to a motor, the driving shaft of the motor is fixedly connected to a long rod, one end of the long rod passes through and is fixedly connected to an arc frame, one side of the arc frame is fixedly connected to a rubber gasket, one side of the arc frame is fixedly connected to an arc-shaped clamping plate, the arc frame and the arc-shaped clamping plate cooperate with each other, and under the drive of the motor, the arc frame rotates to open and close to fix the two ends of the filter element, and the arc-shaped clamping plate fixes the middle part of the filter element to ensure the stability of the filter element during the detection process and avoid affecting the detection result due to position offset or uneven force, one side of the arc-shaped clamping plate is fixedly connected to a rubber strip, the rubber pad The sheet and the rubber strip are respectively arranged between the two arc frames and on one side between the two arc clamping plates. When the arc frame and the arc clamping plate are clamped, they can effectively prevent their contact pressure from being too large, avoid unnecessary damage to the filter element, and protect the integrity of the filter element. Baffles are fixedly connected to both sides of the inner wall of the U-shaped block. The baffles are arranged on the inner wall of the U-shaped block to limit the rotation of the arc frame and the arc clamping plate, and only allow them to rotate at a specified angle to prevent excessive inward rotation angle, excessive pressure on the surface of the filter element, causing the filter element to rupture, thereby ensuring the safety of the filter element. The bottom of the U-shaped block is fixedly connected to the top of the base. There are multiple U-shaped blocks, and multiple U-shaped blocks are distributed on the top of the base.

[0007] Furthermore, the detection device includes circular plates 1 and 2, one side of the circular plate 1 is connected to a wooden plug, the surface roughness of the wooden plug is relatively large, when the filter element is placed on the arc-shaped fixed plate, the operator aligns the opening of one end of the filter element with the wooden plug, and uses force to make the wooden plug block the opening of one end of the filter element, thereby laying the foundation for subsequent filter element movement and sealing operations, a groove is provided on the side of the wooden plug, and a compression spring is fixedly connected to one side of the inner wall of the groove, when the friction plate is squeezed, the compression spring is elastically deformed by the pressure, and at the same time, it will generate a reverse force on the friction plate, and this reverse force increases the pressure between the friction plate and the filter element, making the contact between the two closer, further enhancing the stability of the filter element during movement, and preventing the filter element from being displaced or shaking due to vibration, collision and other factors during movement, the compression spring is fixedly connected to the friction plate at one end away from the groove, and during the movement of the filter element, the friction plate will The filter element contacts and is squeezed, and its uneven surface design increases the surface friction in contact with the filter element, so that the filter element can maintain a stable state of motion during subsequent movement, avoiding sliding due to too small friction. The circular plate 1 is fixedly connected to the side close to the wooden plug. When the filter element moves to contact with the gasket, the gasket wraps the filter element mouth, so that the opening at one end of the filter element is completely sealed. The circular plate 1 is connected to a pressure sensor on the side away from the gasket, and the circular plate 2 is connected to a ventilation pipe on the side, and the ventilation pipe is connected to an air pump at the end away from the circular plate 2. A gate valve is fixedly connected to the center of the ventilation pipe, one side of the pressure sensor is fixedly connected to a side of the fixed plate close to the supporting device, the bottom of the air pump is fixedly connected to the top of the bottom plate, and one side of the circular plate 1 is fixedly connected to the inner side of the arc-shaped fixed plate. There are multiple grooves, and the multiple grooves are evenly distributed on the side of the wooden plug.

[0008] The present invention provides an air tightness detection device for filter element manufacturing, which has the following beneficial effects:

[0009] 1. The air tightness detection equipment for manufacturing a filter element is provided with an arc design in which the inner side of the arc-shaped fixing plate fits the filter element, which provides stable support for the filter element and keeps it stable during movement and placement. When the slider slides in the slide groove, it contacts the ball bearings. The ball bearings greatly reduce the friction force when the slider moves, making the movement of the arc-shaped fixing plate smoother and avoiding jamming and shaking. The arc-shaped frame and the arc-shaped clamping plate cooperate with each other. Driven by the motor, the arc-shaped frame rotates to open and close to fix the two ends of the filter element, and the arc-shaped clamping plate fixes the middle part of the filter element to ensure the stability of the filter element during the detection process and avoid affecting the detection results due to position offset or uneven force. When the filter element is placed on the arc-shaped fixing plate, the operator aligns the opening of one end of the filter element with the wooden plug, and uses force to make the wooden plug block the opening of one end of the filter element, thereby laying the foundation for subsequent filter element movement and sealing operations.

[0010] 2. The air tightness detection equipment for manufacturing a filter element is provided with a supporting device. The arc design of the inner side of the arc-shaped fixing plate fits the filter element, which provides stable support for the filter element and keeps it stable during movement and placement. When the slider slides in the slide groove, it contacts the ball bearing. The ball bearing greatly reduces the friction force when the slider moves, making the movement of the arc-shaped fixing plate smoother and avoiding jamming and shaking. The rubber block is arranged on the inner surface of the arc-shaped fixing plate to increase the surface roughness, effectively preventing the filter element from shifting or rotating during movement. The arc-shaped hole is opened on the inner side of the arc-shaped fixing plate. On the one hand, the local stiffness of the arc-shaped fixing plate is changed, so that it can deform more flexibly when subjected to force, and the stress is evenly distributed to avoid stress concentration damage to the filter element due to excessive local stiffness. On the other hand, when the filter element is moved, heat is generated due to the large friction of the rubber block. The arc-shaped hole is conducive to air circulation, helps heat dissipation, reduces additional stress concentration caused by factors such as thermal expansion, and further protects the filter element.

[0011] 3. The air tightness detection equipment for manufacturing a filter element is provided with a fixing device. The arc frame and the arc clamping plate cooperate with each other. Driven by the motor, the arc frame rotates to open and close to fix the two ends of the filter element, and the arc clamping plate fixes the middle part of the filter element to ensure the stability of the filter element during the detection process and avoid affecting the detection results due to position offset or uneven force. The rubber gasket and the rubber strip are respectively arranged between the two arc frames and on one side between the two arc clamping plates. When the arc frame and the arc clamping plate are clamped, they can effectively prevent their contact pressure from being too large, avoid unnecessary damage to the filter element, and protect the integrity of the filter element. The baffle is arranged on the inner wall of the U-shaped block to limit the rotation of the arc frame and the arc clamping plate, and only allow them to rotate at a specified angle to prevent the inward rotation angle from being too large, and excessive pressure is applied to the surface of the filter element to cause the filter element to rupture, thereby ensuring the safety of the filter element.

[0012] 4. The air tightness detection equipment for manufacturing the filter element is provided with a detection device. The surface roughness of the wooden plug is relatively large. When the filter element is placed on the arc-shaped fixed plate, the operator aligns the opening of one end of the filter element with the wooden plug, and uses force to make the wooden plug block the opening of one end of the filter element, thereby laying a foundation for the subsequent movement and sealing operation of the filter element. During the movement of the filter element, the friction plate will contact and be squeezed with the filter element. The uneven design of its surface increases the surface friction in contact with the filter element, so that the filter element can maintain a stable state of motion during subsequent movement and avoid sliding due to too small friction. When the friction plate is squeezed, the compression spring is elastically deformed by pressure. At the same time, it will generate a reverse force on the friction plate. This reverse force increases the pressure between the friction plate and the filter element, making the contact between the two closer, further enhancing the stability of the filter element during movement, and preventing the filter element from being displaced or shaking due to vibration, collision and other factors during movement. When the filter element moves to contact with the gasket, the gasket wraps the filter element mouth to completely seal the opening at one end of the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of the structure of the air tightness detection equipment manufactured for the filter element of the present invention;

[0014] Figure 2 A schematic diagram of the side structure of the air tightness detection equipment manufactured for the filter element of the present invention;

[0015] Figure 3 It is a schematic diagram of the structure of the support device of the present invention;

[0016] Figure 4 It is a schematic diagram of the cross-sectional structure of the support device of the present invention;

[0017] Figure 5 It is a schematic diagram of the structure of the fixing device of the present invention;

[0018] Figure 6 It is a schematic diagram of the bottom structure of the fixing device of the present invention;

[0019] Figure 7 It is a schematic diagram of the structure of the detection device of the present invention;

[0020] Figure 8 It is a schematic diagram of the enlarged structure of the detection device A of the present invention.

[0021] In the figure: 1, bottom plate; 2, supporting device; 3, fixing device; 4, fixing plate; 5, detection device; 21, base; 22, slide groove; 23, round rod; 24, ball bearing; 25, rectangular groove; 26, linear electric slide rail; 27, moving block; 28, slider; 29, arc-shaped fixing plate; 210, rubber block; 211, arc-shaped hole; 31, U-shaped block; 32, motor; 33, long rod; 34, arc-shaped frame; 35, rubber gasket; 36, arc-shaped splint; 37, rubber strip; 38, baffle; 51, round plate one; 52, wooden plug; 53, groove; 54, compression spring; 55, friction plate; 56, gasket; 57, pressure sensor; 58, round plate two; 59, ventilation pipe; 510, air pump; 511, gate valve. DETAILED DESCRIPTION

[0022] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0023] For the first embodiment, please refer to Figure 1-Figure 4The present invention is an air tightness detection device for filter element manufacturing, comprising a bottom plate 1, a support device 2 is fixedly connected to the top of the bottom plate 1, a fixing device 3 is fixedly connected to the top of the support device 2, a fixing plate 4 is fixedly connected to one side of the top of the bottom plate 1, a detection device 5 is fixedly connected to one side of the fixing plate 4 close to the support device 2, and one side of the detection device 5 is fixedly connected to one side of the support device 2;

[0024] The supporting device 2 includes a base 21, and a slide groove 22 is provided on both sides of the inner center of the base 21. A round rod 23 is fixedly connected to the inner wall of the slide groove 22, and a ball 24 is passed through one end of the round rod 23 and rotatably connected. A rectangular groove 25 is provided at the inner center of the base 21, and a linear electric slide rail 26 is fixedly connected to the inner wall of the rectangular groove 25. A moving block 27 is fixedly connected to one side of the linear electric slide rail 26. A slider 28 is slidably connected to the inner wall of the slide groove 22. An arc-shaped fixed plate 29 is fixedly connected to the top of the moving block 27. A rubber block 210 is fixedly connected to the inner side of the arc-shaped fixed plate 29. An arc-shaped hole 211 is provided on the inner side of the arc-shaped fixed plate 29. The bottom of the base 21 is fixedly connected to the top of the bottom plate 1, and one side of the slider 28 is connected to the outer side of the arc-shaped fixed plate 29. The support device 2 is fixedly connected to the side, a plurality of rubber blocks 210 are provided, and the plurality of rubber blocks 210 are distributed on the inner side of the arc-shaped fixing plate 29, a plurality of arc-shaped holes 211 are provided, and the plurality of arc-shaped holes 211 are evenly distributed on the inner side of the arc-shaped fixing plate 29. When in use, the support device 2 is started, the fixing device 3 is opened, the filter element is placed on the inner side of the support device 2, and one end of the filter element is inserted into one side of the detection device 5, and one end of the filter element is closed. The movement inside the support device 2 drives the filter element to move toward the other end of the detection device 5 until the other end of the filter element is closed. The fixing device 3 is started to fix the upper half of the filter element to prevent the filter element from shifting. At this time, the detection device 5 ventilates the inside of the filter element to monitor the pressure change over a period of time. If the pressure drop exceeds the allowable range, it indicates that There is an airtightness problem. If the pressure remains unchanged, there is no airtightness problem. Before placing the filter element, the linear electric slide rail 26 is started to drive the moving block 27 to move linearly along the predetermined track. Since the moving block 27 is fixedly connected to the arc-shaped fixed plate 29, the arc-shaped fixed plate 29 will also move synchronously. In this process, the slider 28 moves with the arc-shaped fixed plate 29 and is in close contact with the ball bearing 24 on the inner wall of the slide groove 22. The presence of the ball bearing 24 greatly reduces the friction force when the slider 28 moves, making the entire sliding process smoother and ensuring that the arc-shaped fixed plate 29 can move smoothly to the specified position. When the arc-shaped fixed plate 29 moves into place, the operator places the filter element on its inner side. The curvature of the inner surface of the arc-shaped fixed plate 29 is consistent with the curvature of the side surface of the filter element. Completely consistent, so it can achieve a close fit and provide stable support for the filter element. At the same time, a plurality of rubber blocks 210 are also arranged on the inner surface of the arc-shaped fixing plate 29. These rubber blocks increase the roughness of the surface, effectively preventing the filter element from offsetting or rotating during the subsequent movement, and ensuring that the filter element is always in the correct position. An arc-shaped hole 211 is also opened on the inner side of the arc-shaped fixing plate 29. On the one hand, it changes the local stiffness of the arc-shaped fixing plate 29, so that the arc-shaped fixing plate 29 can deform more flexibly when subjected to force, thereby distributing stress more evenly and avoiding stress concentration caused by excessive local stiffness, which causes damage to the filter element. On the other hand, when moving the filter element, due to the large roughness of the rubber block 210, the friction is also large, which may generate heat.The existence of the arc-shaped hole 211 is conducive to air circulation, can help dissipate heat, reduce additional stress concentration caused by factors such as thermal expansion, and further protect the filter element.

[0025] For the second embodiment, please refer to Figure 1-Figure 8 The present invention provides an air tightness detection device for filter element manufacturing: a fixing device 3 includes a U-shaped block 31, a motor 32 is fixedly connected to the outer side of the U-shaped block 31, a long rod 33 is fixedly connected to the driving shaft of the motor 32, one end of the long rod 33 penetrates and is fixedly connected to an arc frame 34, a rubber gasket 35 is fixedly connected to one side of the arc frame 34, an arc clamping plate 36 is fixedly connected to one side of the arc clamping plate 36, a rubber strip 37 is fixedly connected to one side of the arc clamping plate 36, baffles 38 are fixedly connected to both sides of the inner wall of the U-shaped block, the bottom of the U-shaped block 31 is fixedly connected to the top of the base 21, a plurality of U-shaped blocks 31 are provided, and the plurality of U-shaped blocks 31 are distributed on the top of the base 21;

[0026] The detection device 5 includes a circular plate 1 51 and a circular plate 2 58. A wooden plug 52 is connected to one side of the circular plate 1 51. A groove 53 is provided on the side of the wooden plug 52. A compression spring 54 is fixedly connected to one side of the inner wall of the groove 53. A friction plate 55 is fixedly connected to the end of the compression spring 54 away from the groove 53. A gasket 56 is fixedly connected to the side of the circular plate 1 51 close to the wooden plug 52. A pressure sensor 57 is connected to the side of the circular plate 1 51 away from the gasket 56. A ventilation pipe 59 is connected to one side of the circular plate 2 58. An air pump 510 is connected to the end of the ventilation pipe 59 away from the circular plate 2 58. A gate valve 511 is fixedly connected to the center of the ventilation pipe 59. One side of the pressure sensor 57 is fixedly connected to the side of the fixed plate 4 close to the supporting device 2. The bottom of the air pump 510 is connected to the bottom plate 1. The top of the filter element is fixedly connected, one side of the circular plate 51 is fixedly connected to the inner side of the arc-shaped fixing plate 29, a plurality of grooves 53 are provided, and the plurality of grooves 53 are evenly distributed on the side of the wooden plug 52. When in use, while placing the filter element, the motor 32 is started, and the output shaft of the motor 32 drives the long rod 33 to rotate. The arc-shaped frame 34 is fixed on the long rod 33, so the arc-shaped frame 34 will open with the rotation of the long rod 33, and the arc-shaped clamping plate 36 is fixedly connected to one side of the arc-shaped frame 34, so the rotation of the arc-shaped frame 34 will also drive the arc-shaped clamping plate 36 to rotate at the same time. When the filter element is moved into the interior of the device, the motor 32 starts to start in the reverse direction, driving the arc-shaped frame 34 to rotate in the opposite direction, thereby fixing the two ends of the filter element. In this process, the arc-shaped clamping plate 36 rotates with the arc-shaped frame 34. The baffle plate 38 provided on the inner wall of the U-shaped block 31 limits the rotation of the arc frame 34 and the arc clamping plate 36, and only allows the arc frame 34 and the arc clamping plate 36 to rotate at a specified angle, so as to prevent them from rotating inward at too large an angle and exerting pressure on the surface of the filter element. Excessive pressure may cause the filter element to rupture. When the filter element is placed on the arc-shaped fixing plate 29, the operator needs to align the opening of one end of the filter element with the wooden plug 52, and then use force to block the opening of one end of the filter element with the wooden plug. During the movement of the filter element, the friction plate 55 will be squeezed, and the compression spring 54 will be subjected to pressure and elastic deformation. At the same time, the compression spring 54 will generate an opposite force on the friction plate 55. The surface of the friction plate 55 is uneven. This design increases the surface friction in contact with the filter element, and the reverse force generated by the compression spring 54 increases the pressure between the filter element and the filter element, making the contact between the two closer, ensuring the stability of the filter element during movement. The filter element continues to move until it stops when it contacts the gasket 56. The function of the gasket 56 is to wrap the filter element mouth.The opening at one end of the filter element is completely sealed. When the filter element moves to the second circular plate 58, the unsealed opening of the filter element at the other end will be sealed by the wooden plug 52 and the gasket 56 fixed at the second circular plate 58, so that the filter element forms a closed space. At this time, the operator opens the gate valve 511 and starts the air pump 510. The air pump 510 will inject gas into the filter element through the ventilation pipe 59. After the gas is injected, it needs to be maintained for a period of time so that the gas can be fully diffused inside the filter element. Then, the operator judges the air tightness of the filter element by observing whether the air pressure displayed by the pressure sensor 57 changes. If there is no change, it means that the air tightness of the filter element is good; if the air pressure drops beyond the allowable range, it means that there is an air tightness problem in the filter element.

[0027] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

[0028] When the present invention is operated, the support device 2 is started, the fixing device 3 is opened, the filter element is placed inside the support device 2, and one end of the filter element is inserted into one side of the detection device 5, one end of the filter element is closed, and the internal movement of the support device 2 drives the filter element to move toward the other end of the detection device 5 until the other end of the filter element is closed. The fixing device 3 is started to fix the upper half of the filter element to prevent the filter element from shifting. At this time, the detection device 5 ventilates the inside of the filter element to monitor the pressure change over a period of time. If the pressure drops beyond the allowable range, it indicates that there is an airtightness problem. If the pressure remains unchanged, there is no airtightness problem. Before placing the filter element, the linear electric slide rail 26 is started to drive the moving block 27 to move in a straight line along the predetermined track. Since the moving block 27 is aligned with the arc-shaped fixing The plate 29 is fixedly connected, so the arc-shaped fixing plate 29 will also move synchronously. In this process, the slider 28 moves with the arc-shaped fixing plate 29 and is in close contact with the ball bearings 24 on the inner wall of the slide groove 22. The existence of the ball bearings 24 greatly reduces the friction force when the slider 28 moves, making the entire sliding process smoother and ensuring that the arc-shaped fixing plate 29 can move smoothly to the specified position. When the arc-shaped fixing plate 29 moves into place, the operator places the filter element on its inner side. The curvature of the inner surface of the arc-shaped fixing plate 29 is completely consistent with the curvature of the side surface of the filter element, so that a close fit can be achieved, providing stable support for the filter element. At the same time, a plurality of rubber blocks 210 are also provided on the inner surface of the arc-shaped fixing plate 29. These rubber blocks increase the roughness of the surface. In order to effectively prevent the filter element from being offset or rotated during the subsequent movement, and ensure that the filter element is always in the correct position, an arc hole 211 is also provided on the inner side of the arc fixing plate 29. On the one hand, it changes the local rigidity of the arc fixing plate 29, so that the arc fixing plate 29 can be deformed more flexibly when subjected to force, thereby distributing the stress more evenly, avoiding stress concentration caused by excessive local rigidity, and causing damage to the filter element. On the other hand, when moving the filter element, due to the large roughness of the rubber block 210 and the large friction, heat may be generated. The existence of the arc hole 211 is conducive to air circulation, can help dissipate heat, reduce additional stress concentration caused by factors such as thermal expansion, and further protect the filter element. While placing the filter element, the motor 32 is started, and the motor 3 The output shaft of 2 drives the long rod 33 to rotate, and the arc frame 34 is fixed on the long rod 33, so the arc frame 34 will open with the rotation of the long rod 33, and the arc clamping plate 36 is fixedly connected to one side of the arc frame 34, so the rotation of the arc frame 34 will also drive the arc clamping plate 36 to rotate at the same time. When the filter element is moved into the inside of the equipment, the motor 32 starts to start in the reverse direction, driving the arc frame 34 to rotate in the opposite direction, so as to fix the two ends of the filter element. In this process, the arc clamping plate 36 rotates with the rotation of the arc frame 34 to fix the middle part of the filter element to prevent the filter element from being deformed or damaged due to uneven stress during the fixing process. When the arc frames 34 on both sides are clamped inwardly with the rotation of the motor 32, the rubber gasket 35 between the two arc frames 34 plays an important role.It can effectively prevent excessive pressure when the two arc frames 34 are in contact, thereby avoiding unnecessary damage to the filter element. Similarly, the rubber strip 37 arranged on one side between the two arc splints 36 can also prevent excessive pressure when the two arc splints 36 are in contact when fixed, thereby protecting the safety of the filter element. The baffle 38 arranged on the inner wall of the U-shaped block 31 limits the rotation of the arc frame 34 and the arc splint 36, and only allows the arc frame 34 and the arc splint 36 to rotate at a specified angle, thereby preventing them from rotating inward at too large an angle and applying excessive pressure on the surface of the filter element, causing the filter element to rupture. When the filter element is placed on the arc fixing plate 29, the operator needs to align the opening of one end of the filter element with the wooden plug 52, and then force the wooden plug to block the opening of one end of the filter element. During the movement of the filter element, the friction plate 55 will be squeezed, and the compression spring 54 will be subjected to pressure and elastic deformation will occur. At the same time, the compression spring 54 will generate an opposite force on the friction plate 55, and the surface of the friction plate 55 is uneven. This design increases the contact with the filter element. The surface friction of the filter element is increased, and the reverse force generated by the compression spring 54 increases the pressure between the filter element and the filter element, making the two contact more closely, ensuring the stability of the filter element during movement. The filter element continues to move until it stops when it contacts the gasket 56. The function of the gasket 56 is to wrap the filter element mouth so that the opening at one end of the filter element is completely sealed. When the filter element moves to the circular plate 2 58, the unsealed filter element opening at the other end will be sealed by the wooden plug 52 and the gasket 56 fixed at the circular plate 2 58, so that the filter element forms a closed space. At this time, the operator opens the gate valve 511 and starts the air pump 510. The air pump 510 will inject gas into the filter element through the ventilation pipe 59. After the gas is injected, it needs to be maintained for a period of time so that the gas can be fully diffused inside the filter element. Then, the operator judges the air tightness of the filter element by observing whether the air pressure displayed by the pressure sensor 57 changes. If there is no change, it means that the air tightness of the filter element is good; if the air pressure drops beyond the allowable range, it indicates that there is an air tightness problem in the filter element. ,

[0029] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. An air tightness testing device for filter element manufacturing, comprising a bottom plate (1), characterized in that: The top of the base plate (1) is fixedly connected to a supporting device (2), the top of the supporting device (2) is fixedly connected to a fixing device (3), one side of the top of the base plate (1) is fixedly connected to a fixing plate (4), a side of the fixing plate (4) close to the supporting device (2) is fixedly connected to a detection device (5), and one side of the detection device (5) is fixedly connected to one side of the supporting device (2).

2. The air tightness detection device for filter element manufacturing according to claim 1, characterized in that: The support device (2) comprises a base (21), and a slide groove (22) is provided on both sides of the inner center position of the base (21), and a round rod (23) is fixedly connected to the inner wall of the slide groove (22), and a ball (24) is passed through and rotatably connected to one end of the round rod (23), and a rectangular groove (25) is provided at the inner center position of the base (21), and a linear electric slide rail (26) is fixedly connected to the inner wall of the rectangular groove (25), and a moving block (27) is fixedly connected to one side of the linear electric slide rail (26), and a slider (28) is slidably connected to the inner wall of the slide groove (22), and an arc-shaped fixed plate (29) is fixedly connected to the top of the moving block (27), and a rubber block (210) is fixedly connected to the inner side of the arc-shaped fixed plate (29), and an arc-shaped hole (211) is provided on the inner side of the arc-shaped fixed plate (29).

3. The air tightness detection device for filter element manufacturing according to claim 2, characterized in that: The bottom of the base (21) is fixedly connected to the top of the bottom plate (1), and one side of the sliding block (28) is fixedly connected to the outer side of the arc-shaped fixing plate (29).

4. The air tightness detection device for filter element manufacturing according to claim 2, characterized in that: A plurality of the rubber blocks (210) are provided, and the plurality of the rubber blocks (210) are distributed on the inner side of the arc-shaped fixing plate (29); a plurality of the arc-shaped holes (211) are provided, and the plurality of the arc-shaped holes (211) are evenly distributed on the inner side of the arc-shaped fixing plate (29).

5. The air tightness detection device for filter element manufacturing according to claim 1, characterized in that: The fixing device (3) comprises a U-shaped block (31), the outer side of the U-shaped block (31) is fixedly connected to a motor (32), the driving shaft of the motor (32) is fixedly connected to a long rod (33), one end of the long rod (33) passes through and is fixedly connected to an arc frame (34), one side of the arc frame (34) is fixedly connected to a rubber gasket (35), one side of the arc frame (34) is fixedly connected to an arc clamping plate (36), one side of the arc clamping plate (36) is fixedly connected to a rubber strip (37), and both sides of the inner wall of the U-shaped block (31) are fixedly connected to baffles (38).

6. The air tightness detection device for filter element manufacturing according to claim 5, characterized in that: The bottom of the U-shaped block (31) is fixedly connected to the top of the base (21), a plurality of the U-shaped blocks (31) are provided, and the plurality of the U-shaped blocks (31) are distributed on the top of the base (21).

7. The air tightness detection device for filter element manufacturing according to claim 1, characterized in that: The detection device (5) comprises a circular plate 1 (51) and a circular plate 2 (58), one side of the circular plate 1 (51) is connected to a wooden plug (52), a groove (53) is provided on the side of the wooden plug (52), a compression spring (54) is fixedly connected to one side of the inner wall of the groove (53), an end of the compression spring (54) away from the groove (53) is fixedly connected to a friction plate (55), a side of the circular plate 1 (51) close to the wooden plug (52) is fixedly connected to a gasket (56), a side of the circular plate 1 (51) away from the gasket (56) is connected to a pressure sensor (57), one side of the circular plate 2 (58) is connected to a ventilation pipe (59), an end of the ventilation pipe (59) away from the circular plate 2 (58) is connected to an air pump (510), and a gate valve (511) is fixedly connected to the center of the ventilation pipe (59).

8. The air tightness detection device for filter element manufacturing according to claim 7, characterized in that: One side of the pressure sensor (57) is fixedly connected to a side of the fixing plate (4) close to the supporting device (2), and the bottom of the air pump (510) is fixedly connected to the top of the bottom plate (1).

9. The air tightness detection device for filter element manufacturing according to claim 7, characterized in that: One side of the circular plate (51) is fixedly connected to the inner side of the arc-shaped fixed plate (29), and a plurality of grooves (53) are provided, and the plurality of grooves (53) are evenly distributed on the side of the wooden plug (52).

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