A precision filter sealing detection device and method

Abstract

The present invention discloses a precision filter sealing detection device and method, belonging to the technical field of filter detection equipment. It comprises a bottom plate and a support frame arranged on the top of the bottom plate, a support plate is slidably arranged inside the support frame, a connecting arm is symmetrically arranged on the outer wall of the support plate, a placing tool is arranged on the inner side of the connecting arm, a positioning and plugging component that cooperates with the placing tool to clamp and fix the precision filter to be detected is arranged on the inner side of the connecting arm, a mounting frame is arranged between the connecting arm and the support plate, an air pump is arranged on the top of the mounting frame, the output end of the air pump is connected to the positioning and plugging component through a connecting hose and an air distribution pipe, a pressure gauge is arranged on the end of the positioning and plugging component opposite to the air distribution pipe, a water tank is arranged on the top of the bottom plate, and a first driving component is arranged on the support frame; the present invention can effectively and accurately detect the sealing of the filtration and whether there is micro-seepage, and can perform batch detection to improve the detection efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of filter detection equipment, and in particular to a precision filter sealing detection device and method. Background Art

[0002] Precision filters are also called security filters. The outer shell of the cylinder is generally made of stainless steel. The interior uses tubular filter elements such as PP melt-blown, wire-sintered, folded, titanium filter elements, and activated carbon filter elements as filter elements. Different filter elements are selected according to different filter media and design processes to meet the requirements of effluent water quality. They are used for solid-liquid separation of various suspensions, and for liquid filtration with relatively high environmental requirements and high filtration accuracy. They have a wide range of applications and are suitable for industrial fields such as medicine, food, chemical industry, environmental protection, and water treatment. In order to ensure the safety and effectiveness of the filter, the filter sealing needs to be tested accordingly before leaving the factory.

[0003] After searching, the utility model with publication number CN216207358U discloses a precision filter sealing detection device, including a frame and a detection mechanism. The detection mechanism is installed on the surface of the frame. The detection mechanism includes a support rod, a support platform, an air flow rate sensor, a cylinder, a sleeve rod, an air compressor, an air pipe and a buzzer. A support rod is installed on the surface of the frame, a support platform is installed on the top of the support rod, and an air flow rate sensor is installed on the side of the support rod near the support platform. When the cylinder runs, high-pressure gas is transported to the inside of the connecting pipe through the air pipe, and enters the inside of the sleeve rod and the surface of the filter. If the surface of the filter is well sealed, the air is completely blocked. If the sealing is defective, the gas will pass through the filter and enter the inside of the support rod, and the detection data of the air flow rate sensor will change to obtain the detection result. Compared with the traditional detection device, it is easy to operate, save time and effort, but it still has the following defects during use. The device is inconvenient to operate when fixing the filter, and the device can only detect one filter at a time when in use, and it is difficult to achieve the effect of batch detection, and the work efficiency is relatively low. Secondly, when the filter only has a slight seepage, it is difficult to detect that the filter has a loose seal through the air flow rate sensor. Therefore, the device still has certain shortcomings. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in the prior art that filter fixing operation is inconvenient, detection efficiency is relatively low, and detection accuracy is insufficient, and a precision filter sealing detection device is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A precision filter sealing detection device comprises a base plate and a support frame arranged on the top of the base plate, a support plate is slidably arranged inside the support frame, connecting arms are symmetrically arranged on the outer wall of the support plate, a placement tool for placing the precision filter to be detected is arranged on the inner side of the connecting arm, a positioning and sealing assembly for clamping and fixing the precision filter to be detected with the placement tool is arranged on the inner side of the connecting arm, a mounting frame is arranged between the connecting arm and the support plate, an air pump is arranged on the top of the mounting frame, the output end of the air pump is connected with the positioning and sealing assembly through a connecting hose and an air distribution pipe, a pressure gauge is arranged on the end of the positioning and sealing assembly opposite to the air distribution pipe, a water tank is arranged on the top of the base plate, and a first driving assembly for driving the placement tool to move up and down and immerse it in the water tank is arranged on the support frame.

[0007] As a preferred technical solution of the present application, the first driving assembly includes a driving cylinder arranged on the top of the support frame and a first guide rod arranged on the inner side of the support frame, wherein the output end of the driving cylinder passes through the support frame and is connected to the support plate, and the support plate is slidably connected to the first guide rod.

[0008] As a preferred technical solution of the present application, the placement tool includes a placement plate slidably arranged on a connecting arm and a placement seat arranged on the top of the placement plate and having a placement groove.

[0009] As a preferred technical solution of the present application, a sliding groove matching with the placement plate is provided on the inner side of the connecting arm, and the placement plate and the connecting arm are connected by a locking bolt.

[0010] As a preferred technical solution of the present application, the positioning and sealing assembly includes a connecting frame symmetrically arranged on the inner side of the connecting arm, a first positioning blocking sleeve and a second positioning blocking sleeve arranged through the connecting frame, and a second driving assembly that drives the two symmetrically arranged connecting frames to approach each other to achieve clamping and sealing of the precision filter to be inspected.

[0011] As a preferred technical solution of the present application, the second driving assembly includes a driving motor arranged on the outer wall of the connecting arm, a transmission screw connected to the inner side of the connecting arm and one end of which is connected to the output end of the driving motor, a second guide rod connected to the inner side of the connecting arm, and a mounting plate threadedly connected to the transmission screw and slidably connected to the second guide rod, and the connecting frame is connected to the mounting plate.

[0012] As a preferred technical solution of the present application, the first positioning plugging sleeve and the second positioning plugging sleeve both include a positioning sleeve that is penetrated and arranged on the connecting frame, a positioning plate that is slidably arranged inside the positioning sleeve, a connecting rod component connected to the inner wall of the positioning sleeve, and a clamping plate connected to the inner wall of the connecting rod component through a connecting rod, wherein a first elastic member is arranged between the positioning plate and the positioning sleeve, and a second elastic member is arranged between the positioning sleeve and the connecting arm.

[0013] As a preferred technical solution of the present application, the connecting rod components are arranged in a ring shape along the positioning sleeve in 4-6 groups, including a first connecting plate arranged on the inner wall of the positioning sleeve, a connecting rod rotatably connected to the outer wall of the first connecting plate, and a second connecting plate rotatably connected to the other end of the connecting rod, wherein the positioning plate is provided with a sliding groove matching the second connecting plate, and the second connecting plate is slidably connected in the sliding groove.

[0014] As a preferred technical solution of the present application, ventilation holes are provided on the positioning plate and the positioning sleeve, and a sealing rubber pad is also provided on the inner wall of the positioning plate.

[0015] A method for detecting the sealing performance of a precision filter comprises the following steps:

[0016] S1: When in use, the filter to be tested is placed on the placement seat, and a plurality of workstations for carrying the filter are arranged on the placement seat, and the number of workstations corresponds to the number of the first positioning plugging sleeve and the second positioning plugging sleeve, so that the filters can be tested in batches, thereby improving the detection efficiency of the filters, and then the driving motor is started to rotate forward to drive the transmission screw connected to its output end to rotate, and the second guide rod provided in cooperation will then drive the two mounting plates connected to the transmission screw thread to move toward each other, thereby driving the two connecting frames connected on the outer wall to approach each other, and performing the positioning and plugging operation on the filter placed on the placement seat;

[0017] S2: When the two connecting frames approach each other along the second guide rod, the first positioning plugging sleeve and the second positioning plugging sleeve connected thereto are driven to approach each other, thereby positioning and plugging the filter on the placement seat, and then the next operation is performed;

[0018] S3: When the first positioning plug sleeve and the second positioning plug sleeve are close to each other, the positioning plate inside the positioning sleeve will first abut against the two ends of the filter to be tested. After abutting against each other, the two connecting frames will continue to be close to each other. At this time, the positioning plate will be squeezed accordingly, and the second connecting plate is slidably connected inside the slide groove, and the slide groove and connecting rod are arranged in cooperation. Therefore, when the positioning plate is squeezed, it will drive the second connecting plate to move accordingly. The connecting rod and the slide groove will drive multiple groups of clamps to move along the slide groove toward the center of the positioning sleeve. Since the connecting rod parts are arranged in a ring shape along the positioning sleeve, there are 4-6 groups. Therefore, when the clamp moves toward the center of the positioning sleeve, the filter will be clamped and positioned;

[0019] S4: The first elastic member can play a certain buffering effect when clamping the filter, which can avoid the rigid connection when positioning and blocking the filter and causing damage to the filter. Secondly, the second elastic member can further flexibly position the filter, and the sealing gasket can effectively improve the sealing performance of the two ends of the filter, avoiding leakage and affecting the accuracy of detection.

[0020] S5: Start the driving cylinder to extend, cooperate with the first guide rod, drive the support plate to move downward along the first guide rod, and then drive the connecting arm and the placement seat to move downward until the filter to be tested is completely immersed in the water tank, start the air pump to inflate the filter through the connecting hose and the air pipe, and then the air pressure inside the filter can be detected by the pressure gauge, so as to judge the sealing performance of the filter. Secondly, cooperate with the water tank, by observing whether bubbles are generated inside the water tank, it is possible to observe whether the filter has micro-leakage, thereby improving the detection accuracy of the filter sealing performance;

[0021] S6: After the detection is completed, the drive cylinder is started to retract, driving the support plate to move upward along the first guide rod, and the filter after the detection is completed is moved out of the water tank, and then the drive motor is started to rotate in the opposite direction, driving the two connecting frames to move back to back, and then driving the first positioning plugging sleeve and the second positioning plugging sleeve to move away from each other, releasing the equal-position plugging of the filter, so that it can be easily removed to complete the detection.

[0022] Compared with the prior art, the present invention provides a precision filter sealing detection device, which has the following beneficial effects:

[0023] 1. The precision filter sealing detection device can detect the internal pressure of the filter by means of the air pump and the water tank, and can also detect whether the filter is not tightly sealed or has micro-leakage by checking whether bubbles appear in the water inside the water tank, thereby improving the accuracy of the filter sealing detection;

[0024] 2. The precision filter sealing detection device can locate the filter to be detected and seal both ends of the filter through the positioning and blocking components. In addition, the air pump and water tank can be used to detect the sealing of the filter.

[0025] 3. The precision filter sealing detection device can prevent the filter from being damaged by rigid connection with the filter through the positioning plate, the connecting rod component, the first elastic component and the second elastic component.

[0026] 4. The precision filter sealing detection device, through the placement tooling, can not only detect filters in batches to improve the detection efficiency, but also, because it is detachably connected to the connecting arm, different placement tooling can be replaced according to the model of the filter to be detected. Secondly, in combination with the positioning and blocking components, the applicability of the detection device can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The structure of the present invention is schematically shown Figure 1 ;

[0028] Figure 2 It is a front view of the present invention;

[0029] Figure 3 The structure of the present invention is schematically shown Figure 2 ;

[0030] Figure 4 For the present invention Figure 3 The structural diagram of part A in the figure;

[0031] Figure 5 is a side view of the present invention;

[0032] Figure 6 A top view of the present invention;

[0033] Figure 7 It is a front view of the positioning sleeve in the present invention;

[0034] Figure 8 is a cross-sectional view of the present invention;

[0035] Fig. 9 It is a cross-sectional structural schematic diagram of the present invention;

[0036] In the figure:

[0037] 100, bottom plate; 101, support frame; 102, support plate; 103, connecting arm; 104, mounting frame; 200, placement tool; 201, placement plate; 202, placement seat; 203, locking bolt; 300, positioning plugging assembly; 301, connecting frame; 302, first positioning plugging sleeve; 3021, positioning sleeve; 3022, positioning plate; 3023, connecting rod component; 3024, connecting rod; 3025, first connecting plate; 3026, first elastic member; 3027, second connecting plate; 302 8. Slide groove; 3029. Air vent; 3030. Connecting rod; 303. Second driving assembly; 3031. Driving motor; 3032. Transmission screw; 3033. Second guide rod; 3034. Mounting plate; 304. Second positioning sleeve; 305. Clamp; 306. Sealing pad; 307. Second elastic member; 400. Air pump; 401. Connecting hose; 402. Air distribution pipe; 403. Pressure gauge; 500. Water tank; 600. First driving assembly; 601. Driving cylinder; 602. Guide rod. DETAILED DESCRIPTION

[0038] 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; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention. Example

[0039] Reference Figure 1-6A precision filter sealing detection device comprises a bottom plate 100 and a support frame 101 arranged on the top of the bottom plate 100, a support plate 102 is slidably arranged inside the support frame 101, a connecting arm 103 is symmetrically arranged on the outer wall of the support plate 102, a placement tool 200 for placing the precision filter to be detected is arranged on the inner side of the connecting arm 103, a positioning and plugging component 300 for clamping and fixing the precision filter to be detected with the placement tool 200 is arranged on the inner side of the connecting arm 103, a mounting frame 104 is arranged between the connecting arm 103 and the support plate 102, an air pump 400 is arranged on the top of the mounting frame 104, and the output end of the air pump 400 is connected to the positioning The plugging components 300 are connected, and a pressure gauge 403 is provided at the end of the positioning plugging component 300 opposite to the air distribution pipe 402. A water tank 500 is provided on the top of the base plate 100, and a first driving component 600 is provided on the support frame 101 for driving the placement tooling 200 to move up and down and immerse into the water tank 500. When in use, the filter to be tested is placed on the placement tooling 200, and then the positioning plugging component 300 is started for equal-position plugging, and then it is transported to the inside of the water tank 500 through the first driving component 600, and the inside of the filter is inflated by the air pump 400. By observing whether bubbles are generated on the pressure gauge and inside the water tank 500, it is detected whether the filter sealing is qualified.

[0040] Reference Figure 1-3 The first driving assembly 600 includes a driving cylinder 601 arranged on the top of the support frame 101 and a first guide rod 602 arranged on the inner side of the support frame 101, wherein the output end of the driving cylinder 601 passes through the support frame 101 and is connected to the support plate 102, and the support plate 102 is slidably connected to the first guide rod 602. When in use, by starting the driving cylinder 601 to extend or retract, the support plate 102 can drive the filter placed on the placement tooling 200 to move upward or downward, so as to immerse it into the water tank 500 or take it out from the inside.

[0041] Reference Figure 1-3 The placement tool 200 includes a placement plate 201 slidably disposed on the connecting arm 103 and a placement seat 202 disposed on the top of the placement plate 201 and having a placement groove.

[0042] A slide groove that cooperates with the placement plate 201 is arranged on the inner side of the connecting arm 103, and the placement plate 201 and the connecting arm 103 are connected by a locking bolt 203. By cooperating with the placement plate 201 and the placement seat 202 to position the blocking assembly 300, multiple filters can be detected at the same time to improve the detection efficiency. The placement plate 201 and the connecting arm 103 are detachably connected, and different placement tools 200 can be replaced according to filters of different sizes, so that the filters can be better detected.

[0043] Reference Figure 1-6 The positioning and sealing component 300 includes a connecting frame 301 symmetrically arranged on the inner side of the connecting arm 103, a first positioning blocking sleeve 302 and a second positioning blocking sleeve 304 that are arranged through the connecting frame 301, and a second driving component 303 that drives the two symmetrically arranged connecting frames 301 to approach each other so as to clamp and seal the precision filter to be tested. The second driving component 303 can drive the first positioning blocking sleeve 302 and the second positioning blocking sleeve 304 to approach or move away from each other, thereby achieving the effect of positioning the filter, and cooperates with the air pump 400, the pressure gauge 403 and the water tank 500 to perform a sealing test on the filter.

[0044] Reference Figure 1 , Figure 2 , Figure 3 and Figure 6 The second driving assembly 303 includes a driving motor 3031 arranged on the outer wall of the connecting arm 103, a transmission screw 3032 connected to the inner side of the connecting arm 103 and one end of which is connected to the output end of the driving motor 3031, a second guide rod 3033 connected to the inner side of the connecting arm 103, and a mounting plate 3034 threadedly connected to the transmission screw 3032 and slidingly connected to the second guide rod 3033. The connecting frame 301 is connected to the mounting plate 3034. When in use, the driving motor 3031 is started to drive the transmission screw 3032 connected to its output end to rotate. It should be noted that the transmission screw 3032 adopts a bidirectional screw structure. Therefore, when the transmission screw 3032 rotates, the second guide rod 3033 arranged in conjunction with it can drive the two mounting plates 3034 to approach or move away from each other, and then drive the first positioning sleeve 302 and the second positioning sleeve 304 to approach or move away from each other.

[0045] Reference Figure 6-9 The first positioning sleeve 302 and the second positioning sleeve 304 both include a positioning sleeve 3021 that is penetrated and arranged on the connecting frame 301, a positioning plate 3022 that is slidably arranged inside the positioning sleeve 3021, a connecting rod component 3023 connected to the inner wall of the positioning sleeve 3021, and a clamping plate 305 that is connected to the inner wall of the connecting rod component 3023 through the connecting rod 3024, wherein a first elastic member 3026 is arranged between the positioning plate 3022 and the positioning sleeve 3021, and a second elastic member 307 is arranged between the positioning sleeve 3021 and the connecting arm 103. The connecting rod component 3023, the positioning plate 3022 and the first elastic member 3026 can automatically clamp and position the filter, and the first elastic member 3026 and the second elastic member 307 that are arranged in conjunction with each other can play a buffering effect to avoid damage to the filter caused by rigid connection with the filter.

[0046] Reference Figure 7-9 The connecting rod part 3023 is arranged in a ring shape with 4-6 groups along the positioning sleeve 3021, including a first connecting plate 3025 arranged on the inner wall of the positioning sleeve 3021, a connecting rod 3030 rotatably connected to the outer wall of the first connecting plate 3025, and a second connecting plate 3027 rotatably connected to the other end of the connecting rod 3030, wherein a slide groove 3028 matching with the second connecting plate 3027 is arranged on the positioning plate 3022, and the second connecting plate 3027 is slidably connected in the slide groove 3028. Through the arrangement of the connecting rod part 3023 and the clamping plate 305, the filter can be initially fixed, and at the same time, it can ensure that the air outlet of the filter corresponds to the air vent 3029 to avoid their interlacing and affecting the accuracy of detection.

[0047] Reference Figure 7 and Fig. 9 The positioning plate 3022 and the positioning sleeve 3021 are both provided with ventilation holes 3029, and a sealing rubber pad 306 is also provided on the inner wall of the positioning plate 3022. The sealing rubber pad 306 can effectively improve the sealing effect of the filter and avoid air leakage during inflation, which may affect the accuracy of detection.

[0048] Specifically, when the precision filter sealing detection device is in use: S1: When in use, the filter to be detected is placed on the placement seat 202. The placement seat 202 is provided with a plurality of workstations for carrying the filter, and the number of workstations corresponds to the number of the first positioning plugging sleeve 302 and the second positioning plugging sleeve 304. The filters can be detected in batches to improve the detection efficiency of the filters. Then, the driving motor 3031 is started to rotate forward to drive the transmission screw 3032 connected to its output end to rotate, and the second guide rod 3033 provided in conjunction with it will then drive the two mounting plates 3034 threadedly connected to the transmission screw 3032 to move toward each other, thereby driving the two connecting frames 301 connected on its outer wall to approach each other, and performing positioning and blocking operations on the filter placed on the placement seat 202;

[0049] S2: When the two connecting frames 301 approach each other along the second guide rod 3033, the first positioning plugging sleeve 302 and the second positioning plugging sleeve 304 connected thereto are driven to approach each other, thereby positioning and plugging the filter on the placement seat 202, and then the next operation is performed;

[0050] S3: When the first positioning sleeve 302 and the second positioning sleeve 304 are close to each other, the positioning plate 3022 inside the positioning sleeve 3021 will first abut against the two ends of the filter to be tested, and after abutting, the two connecting frames 301 will continue to approach each other, at this time, the positioning plate 3022 will be squeezed accordingly, and the second connecting plate 3027 will be slidably connected inside the slide groove 3028, and the slide groove 3028 and the connecting rod 3030 are arranged in cooperation. Therefore, when the positioning plate 3022 is squeezed, the second connecting plate 3027 will be driven to move accordingly, and the connecting rod 3030 and the slide groove 3028 will drive the multiple groups of clamping plates 305 to move along the slide groove 3028 toward the center of the positioning sleeve 3021. Since the connecting rod component 3023 is arranged in a ring shape along the positioning sleeve 3021 with 4-6 groups, when the clamping plate 305 moves toward the center of the positioning sleeve 3021, the filter will be clamped and positioned;

[0051] S4: The first elastic member 3026 can provide a certain buffering effect when clamping the filter, and can avoid the situation of rigid connection when positioning and blocking the filter, which may cause damage to the filter. Secondly, the second elastic member 307 can further flexibly position the filter, and the sealing gasket 306 can effectively improve the sealing performance of the two ends of the filter, and avoid air leakage and affect the accuracy of detection.

[0052] S5: Start the driving cylinder 601 to extend, cooperate with the first guide rod 602, drive the support plate 102 to move downward along the first guide rod 602, and then drive the connecting arm 103 and the placement seat 202 to move downward until the filter to be tested is completely immersed in the water tank 500, start the air pump 400 to inflate the inside of the filter through the connecting hose 401 and the air distribution pipe 402, and then the air pressure inside the filter can be detected by the pressure gauge 403, so as to judge the sealing performance of the filter, and then cooperate with the water tank 500 to observe whether bubbles are generated inside the water tank 500, so as to observe whether there is micro-leakage in the filter, thereby improving the detection accuracy of the filter sealing performance;

[0053] S6: After the detection is completed, the drive cylinder 601 is started to contract, driving the support plate 102 to move upward along the first guide rod 602, and the filter after the detection is completed is moved out of the water tank 500, and then the drive motor 3031 is started to rotate in the opposite direction, driving the two connecting frames 301 to move backwards, and then driving the first positioning plugging sleeve 302 and the second positioning plugging sleeve 304 to move away from each other, releasing the equal-position blockage of the filter, so that it can be easily removed to complete the detection.

[0054] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A precision filter sealing detection device, comprising a base plate (100) and a support frame (101) arranged on the top of the base plate (100), characterized in that: A support plate (102) is slidably arranged inside the support frame (101); a connecting arm (103) is symmetrically arranged on the outer wall of the support plate (102); a placement tool (200) for placing the precision filter to be tested is arranged on the inner side of the connecting arm (103); a positioning and blocking component (300) is arranged on the inner side of the connecting arm (103) for clamping and fixing the precision filter to be tested in cooperation with the placement tool (200); a mounting frame (104) is arranged between the connecting arm (103) and the support plate (102); (104) An air pump (400) is arranged on the top, the output end of the air pump (400) is connected to the positioning and plugging component (300) through a connecting hose (401) and an air distribution pipe (402), a pressure gauge (403) is arranged on the end of the positioning and plugging component (300) opposite to the air distribution pipe (402), a water tank (500) is arranged on the top of the bottom plate (100), and a first driving component (600) for driving the placement tool (200) to move up and down and be immersed in the water tank (500) is arranged on the support frame (101); The first driving assembly (600) comprises a driving cylinder (601) arranged on the top of the support frame (101) and a first guide rod (602) arranged on the inner side of the support frame (101), wherein the output end of the driving cylinder (601) passes through the support frame (101) and is connected to the support plate (102), and the support plate (102) is slidably connected to the first guide rod (602); The positioning and blocking component (300) comprises a connecting frame (301) symmetrically arranged on the inner side of the connecting arm (103), a first positioning blocking sleeve (302) and a second positioning blocking sleeve (304) which are arranged through the connecting frame (301), and a second driving component (303) which drives the two symmetrically arranged connecting frames (301) to approach each other so as to clamp and block the precision filter to be tested; The second driving assembly (303) comprises a driving motor (3031) arranged on the outer wall of the connecting arm (103), a transmission screw (3032) connected to the inner side of the connecting arm (103) and having one end connected to the output end of the driving motor (3031), a second guide rod (3033) connected to the inner side of the connecting arm (103), and a mounting plate (3034) threadedly connected to the transmission screw (3032) and slidably connected to the second guide rod (3033), and the connecting frame (301) is connected to the mounting plate (3034).

2. A precision filter sealing detection device according to claim 1, characterized in that: The placement tool (200) comprises a placement plate (201) slidably arranged on the connection arm (103) and a placement seat (202) arranged on the top of the placement plate (201) and having a placement groove.

3. A precision filter sealing detection device according to claim 2, characterized in that: A sliding groove matching the placement plate (201) is provided on the inner side of the connecting arm (103), and the placement plate (201) and the connecting arm (103) are connected via a locking bolt (203).

4. A precision filter sealing detection device according to claim 3, characterized in that: The first positioning plugging sleeve (302) and the second positioning plugging sleeve (304) both comprise a positioning sleeve (3021) penetratingly arranged on the connecting frame (301), a positioning plate (3022) slidably arranged inside the positioning sleeve (3021), a connecting rod component (3023) connected to the inner wall of the positioning sleeve (3021), and a clamping plate (305) connected to the inner wall of the connecting rod component (3023) via a connecting rod (3024), wherein a first elastic component (3026) is arranged between the positioning plate (3022) and the positioning sleeve (3021), and a second elastic component (307) is arranged between the positioning sleeve (3021) and the connecting arm (103).

5. A precision filter sealing detection device according to claim 4, characterized in that: The connecting rod component (3023) is arranged in 4 to 6 groups in a ring shape along the positioning sleeve (3021), including a first connecting plate (3025) arranged on the inner wall of the positioning sleeve (3021), a connecting rod (3030) rotatably connected to the outer wall of the first connecting plate (3025), and a second connecting plate (3027) rotatably connected to the other end of the connecting rod (3030), wherein a sliding groove (3028) matching with the second connecting plate (3027) is arranged on the positioning plate (3022), and the second connecting plate (3027) is slidably connected in the sliding groove (3028).

6. A precision filter sealing detection device according to claim 5, characterized in that: The positioning plate (3022) and the positioning sleeve (3021) are both provided with ventilation holes (3029), and a sealing rubber pad (306) is also provided on the inner wall of the positioning plate (3022).

7. The method for using the precision filter sealing detection device according to claim 6, characterized in that: The following steps are involved: S1: When in use, a filter to be tested is placed on the placement seat (202). The placement seat (202) is provided with a plurality of workstations for carrying filters, and the number of workstations corresponds to the number of the first positioning plugging sleeve (302) and the second positioning plugging sleeve (304), so as to test filters in batches and improve the efficiency of filter testing. Subsequently, the drive motor (3031) is started to rotate forward to drive the transmission screw (3032) connected to its output end to rotate, and the second guide rod (3033) provided in cooperation therewith drives the two mounting plates (3034) threadedly connected to the transmission screw (3032) to move towards each other, thereby driving the two connecting frames (301) connected on the outer wall thereof to approach each other, and performing a positioning and blocking operation on the filter placed on the placement seat (202); S2: When the two connecting frames (301) approach each other along the second guide rod (3033), the first positioning plugging sleeve (302) and the second positioning plugging sleeve (304) connected thereto are driven to approach each other, thereby performing a positioning and plugging operation on the filter on the placement seat (202), and then performing the next operation; S3: When the first positioning plug sleeve (302) and the second positioning plug sleeve (304) are close to each other, the positioning plate (3022) inside the positioning sleeve (3021) will first abut against the two ends of the filter to be tested. After abutting against each other, the two connecting frames (301) will continue to be close to each other. At this time, the positioning plate (3022) will be squeezed accordingly, and the second connecting plate (3027) is slidably connected inside the slide groove (3028), and the slide groove (3028) and the connecting rod (3030) are arranged in cooperation. Therefore, when the positioning plate (3 When the second connecting plate (3027) is squeezed, the second connecting plate (3027) is driven to move accordingly, and the matching connecting rod (3030) and the slide groove (3028) drive the plurality of clamping plates (305) to move along the slide groove (3028) toward the center of the positioning sleeve (3021). Since the connecting rod component (3023) is provided with 4 to 6 groups in a ring shape along the positioning sleeve (3021), the filter is clamped and positioned when the clamping plates (305) move toward the center of the positioning sleeve (3021); S4: The first elastic member (3026) can provide a certain buffering effect when clamping the filter, thereby preventing the filter from being damaged due to a rigid connection when the filter is positioned and blocked. Secondly, the second elastic member (307) can further provide a flexible positioning of the filter, and the sealing gasket (306) can effectively improve the sealing performance of the two ends of the filter, thereby preventing air leakage from affecting the accuracy of the detection. S5: Start the driving cylinder (601) to extend, cooperate with the first guide rod (602), drive the support plate (102) to move downward along the first guide rod (602), and then drive the connecting arm (103) and the placement seat (202) to move downward until the filter to be tested is completely immersed in the water tank (500), start the air pump (400) to inflate the filter through the connecting hose (401) and the air distribution pipe (402), and then detect the air pressure inside the filter through the pressure gauge (403) to determine the sealing performance of the filter. Secondly, cooperate with the water tank (500) to observe whether bubbles are generated inside the water tank (500), so as to observe whether the filter has micro-leakage, thereby improving the detection accuracy of the filter sealing performance; S6: After the detection is completed, the driving cylinder (601) is started to retract, driving the support plate (102) to move upward along the first guide rod (602), and the filter after the detection is moved out of the water tank (500), and then the driving motor (3031) is started to rotate in the opposite direction, driving the two connecting frames (301) to move in opposite directions, thereby driving the first positioning plugging sleeve (302) and the second positioning plugging sleeve (304) to move away from each other, thereby releasing the equal-position plugging of the filter, and it can be easily removed to complete the detection.

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