Leak detection device for filter shell

Abstract

The utility model discloses a leak hunting device for a filter housing, which relates to the technical field of leak hunting and comprises a bottom plate provided with a sealing gasket. The air inlet pipe is arranged on the sealing gasket, and a first guide pipe at the lower end of the filter shell is inserted into the air inlet pipe; a lifting adjustment mechanism; the lifting adjusting mechanism can drive the first sealing block to abut against the upper end of the filter shell on the sealing gasket; a movement driving mechanism; the movable driving mechanism can drive the second sealing block, the third sealing block and the fourth sealing block to be close to the filter shell on the sealing gasket at the same time, so that the second sealing block seals a second guide pipe on the left side wall of the filter shell; and the third sealing block and the fourth sealing block respectively seal a plurality of through holes in the rear side wall and the right side wall of the filter shell. The leak hunting device for the filter shell shortens the time of the sealing step, and further facilitates the improvement of the leak hunting efficiency of the filter shell.

Description

TECHNICAL FIELD

[0001] The utility model relates to leak detection technical field, especially in a kind of filter housing leak detection device. BACKGROUND

[0002] Filter is a kind of device for removing impurities or particulate matter in fluid. Filter usually includes shell and filter assembly, filter mechanism is arranged in shell, conduit is provided on shell. The fluid to be filtered flows into the shell, the filter assembly in the shell can filter the impurities or particulate matter in the fluid, and the filtered fluid flows out of the shell to complete the filtration of fluid. Before the filter is installed in the corresponding equipment, the shell of the filter needs to be leak tested to ensure that the filter does not leak during operation. In the prior art, the detector first seals the multiple through holes on the filter shell with multiple seals respectively, and immerses the shell to be tested and the multiple seals in water, and then fills the shell with gas from a pressurized gas supply device to perform airtightness test. This detection method requires the detector to seal the multiple through holes on the shell one by one, which takes a long time for the sealing step, and is not conducive to improving the leak detection efficiency of the filter shell. SUMMARY

[0003] The utility model aims at at least one of the technical problems existing in the prior art. To this end, the utility model provides a filter shell leak detection device, which is beneficial to improving the leak detection efficiency of the filter shell.

[0004] The filter shell leak detection device according to the utility model embodiment comprises:

[0005] A bottom plate is provided with a sealing gasket, and the sealing gasket is used to support the filter shell.

[0006] An air inlet pipe is arranged on the sealing gasket, and the air inlet pipe is used for inserting the first conduit on the lower end of the filter shell to communicate the air inlet pipe with the inner cavity of the filter shell.

[0007] A lifting adjustment mechanism is arranged on the bottom plate.

[0008] A first sealing block is arranged above the air inlet pipe and connected with the output end of the lifting adjustment mechanism, and the lifting adjustment mechanism can drive the first sealing block to press against the upper end of the filter shell on the sealing gasket, so that the first sealing block seals the upper end of the filter shell, and the sealing gasket seals the lower end of the filter shell.

[0009] A moving drive mechanism is arranged on the bottom plate.

[0010] The second sealing block, the third sealing block and the fourth sealing block are connected with the output end of the moving driving mechanism, and the moving driving mechanism can drive the second sealing block, the third sealing block and the fourth sealing block to approach the filter shell on the sealing pad at the same time, so that the second sealing block seals the second conduit on the left side wall of the filter shell, and the third sealing block and the fourth sealing block seal the plurality of through holes on the rear side wall and the right side wall of the filter shell respectively.

[0011] The gas generating mechanism is connected with the air inlet pipe, so that the gas generated by the gas generating mechanism can be filled into the inner cavity of the filter shell.

[0012] The filter shell can be sealed and the gas can be filled into the inner cavity of the filter shell.

[0013] When the filter shell needs to be leak tested, the tester can insert the first conduit on the lower end of the filter shell into the air inlet pipe on the bottom plate, and place the filter shell on the sealing pad so that the air inlet pipe is communicated with the inner cavity of the filter shell. After the filter shell is placed, the tester can control the lifting adjusting mechanism to drive the first sealing block to descend and press against the upper end of the filter shell on the sealing pad. Under the pressing action of the first sealing block, the pressure between the sealing pad and the lower end of the filter shell increases, so that the first sealing block seals the upper end of the filter shell, and the sealing pad seals the lower end of the filter shell.

[0014] After the upper and lower ends of the filter shell are sealed, the tester controls the moving driving mechanism to drive the second sealing block, the third sealing block and the fourth sealing block to simultaneously move towards the filter shell on the sealing pad, and to simultaneously press against the second conduit on the left side wall, the rear side wall and the right side wall of the filter shell respectively, so as to seal the second conduit on the left side wall of the filter shell by the second sealing block, and to seal the plurality of through holes on the rear side wall and the right side wall of the filter shell by the third sealing block and the fourth sealing block respectively, thereby completing the sealing step of the filter shell. After the sealing of the filter shell is completed, the tester starts the gas generating mechanism. The gas generated by the gas generating mechanism is filled into the inner cavity of the filter shell through the gas inlet pipe, and the gas pressure in the inner cavity of the filter shell is greater than the standard atmospheric pressure. When the tester hears the hissing sound of air leakage, it means that the filter shell has a leakage, and is an unqualified filter shell. The tester can also immerse the filter shell leak detection device and the filter shell in water, and when bubbles are observed, it means that the filter shell has a leakage, thereby completing the leak detection of the filter shell. The filter shell leak detection device can simultaneously seal the second conduit and the plurality of through holes of the filter shell, and can also simultaneously seal the second conduit and the upper and lower ends of the filter shell, thereby shortening the sealing time and improving the leak detection efficiency of the filter shell.

[0015] According to the filter shell leak detection device provided in the embodiment of the present application, the lifting adjusting mechanism comprises a transmission rod, a first swing piece, a second swing piece and a first support, the first support is arranged on the bottom plate, the transmission rod is parallel to the up-down direction, the first swing piece and the second swing piece each have a first end and a second end, the first end of the first swing piece is hinged to the first support, the second end of the first swing piece is hinged to the second end of the second swing piece, the first end of the second swing piece is hinged to the upper end of the transmission rod, the lower end of the transmission rod is connected with the first sealing block, and the second end of the second swing piece can swing away from the first support, so that the second swing piece drives the transmission rod to descend and the first sealing block is pressed against the upper end of the filter shell on the sealing pad.

[0016] According to the filter shell leak detection device provided in the embodiment of the present application, the lifting adjusting mechanism further comprises a first holding part, and the first holding part is connected with the second swing piece.

[0017] According to the filter shell leak detection device provided in the embodiment of the present application, a first guide hole parallel to the up-down direction is arranged on the first support, and the transmission rod is arranged in the first guide hole.

[0018] According to the filter shell leak detection device provided by the embodiment of the utility model, the mobile driving mechanism comprises a transmission block, a first connecting rod assembly and a second connecting rod assembly, the transmission block is arranged behind the sealing gasket, the transmission block is movably connected to the bottom plate in the front-rear direction, the third sealing block is arranged on the side of the transmission block facing the sealing gasket, the second sealing block is arranged on the left side of the sealing gasket, the second sealing block is in transmission connection with the transmission block through the first connecting rod assembly, the fourth sealing block is arranged on the right side of the sealing gasket, the fourth sealing block is connected with the transmission block through the second connecting rod assembly, so that when the transmission block moves towards the sealing gasket, the second sealing block, the third sealing block and the fourth sealing block simultaneously move towards the filter shell on the sealing gasket.

[0019] According to the filter shell leak detection device provided by the embodiment of the utility model, the first connecting rod assembly comprises a first swing arm and a second swing arm, the first swing arm and the second swing arm both have a first end and a second end, the first end of the first swing arm is hinged to the transmission block, the second end of the first swing arm is hinged to the first end of the second swing arm, the second end of the second swing arm is hinged to the second sealing block, the middle part of the second swing arm is hinged to the bottom plate, the included angle formed by the first swing arm and the second swing arm is right, and when the transmission block moves towards the sealing gasket, the first swing arm and the second swing arm move towards each other, so that the second end of the second swing arm drives the second sealing block to move towards the sealing gasket.

[0020] According to the filter shell leak detection device provided by the embodiment of the utility model, the first connecting rod assembly further comprises a third swing arm and a connecting column, the lower end of the connecting column is connected to the bottom plate, the third swing arm has a first end and a second end, the first end of the third swing arm is hinged to the upper end of the connecting column, and the second end of the third swing arm is hinged to the second sealing block.

[0021] According to the filter shell leak detection device provided by the embodiment of the utility model, the mobile driving mechanism further comprises a second support and a guide rod, the second support is arranged on the bottom plate, a second guide hole parallel to the front-rear direction is formed in the second support, the guide rod is arranged in the second guide hole, and the front end of the guide rod is connected to the transmission block.

[0022] According to the filter shell leak detection device provided by the embodiment of the utility model, a gas conveying channel is formed in the bottom plate, one end of the gas conveying channel is in communication with the air inlet pipe, and the other end of the gas conveying channel is in communication with the output end of the gas generating mechanism.

[0023] The filter shell leak detection device further comprises an adapter, the adapter is connected with the bottom plate, one end of the adapter extends into the gas channel, and the other end of the adapter is in communication with the output end of the gas generating mechanism.

[0024] Additional aspects and advantages of the present application will be given in part in the following description, become apparent from the following description, or be understood by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0025] The present application will be further described below in conjunction with the drawings and embodiments, wherein:

[0026] Figure 1 It is a structural schematic view of the filter shell of the embodiment of the present application;

[0027] Figure 2 It is a structural schematic view of another perspective of the filter shell of the embodiment of the present application;

[0028] Figure 3 It is a structural schematic view of the filter shell leak detection device of the embodiment of the present application;

[0029] Figure 4 It is a structural schematic view of the filter shell leak detection device and the filter shell of the embodiment of the present application;

[0030] Figure 5 It is Figure 4 It is a local enlarged schematic view of A in the middle;

[0031] Figure 6 It is a structural schematic view of the moving driving mechanism in the filter shell leak detection device of the embodiment of the present application;

[0032] Figure 7 It is a structural schematic view of the first sealing block, the second sealing block, the third sealing block, the fourth sealing block and the filter shell in the filter shell leak detection device of the embodiment of the present application;

[0033] Reference signs:

[0034] The bottom plate 100; the first sealing block 110; the second sealing block 120; the third sealing block 130; the fourth sealing block 140; the sealing gasket 150; the air inlet pipe 160; the adapter 170;

[0035] The lifting adjusting mechanism 200; the first swing piece 210; the second swing piece 220; the first support 230; the transmission rod 240; the first holding part 250;

[0036] The mobile driving mechanism 300; the first connecting rod assembly 310; the first swing arm 311; the second swing arm 312; the third swing arm 313; the connecting column 314; the second connecting rod assembly 320; the transmission block 330; the second support 340; the guide rod 350; the hinged seat 360; the bent arm 370; the second gripping part 380;

[0037] The first conduit 400; the second conduit 500; the third conduit 600. DETAILED DESCRIPTION

[0038] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used only for explaining the present application, and cannot be understood as a limitation of the present application.

[0039] In the description of the present application, it should be understood that, in relation to the orientation description, for example, the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation of the present application.

[0040] In the description of the present application, multiple means two or more. If there is a description of the first, the second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0041] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0042] Reference Figures 1 to 4 、 Figure 7 The filter housing leak detection device of the present application embodiment comprises:

[0043] The bottom plate 100 is provided with a sealing gasket 150, and the sealing gasket 150 is used to support the filter housing;

[0044] The air inlet pipe 160 is arranged on the sealing gasket 150, and the air inlet pipe 160 is used for inserting the first conduit 400 on the lower end of the filter housing, so that the air inlet pipe 160 is in communication with the inner cavity of the filter housing;

[0045] The lifting adjusting mechanism 200 is arranged on the bottom plate 100.

[0046] The first sealing block 110 is arranged above the air inlet pipe 160 and connected with the output end of the lifting adjusting mechanism 200. The lifting adjusting mechanism 200 can drive the first sealing block 110 to press against the upper end of the filter shell on the sealing gasket 150, so that the first sealing block 110 seals the upper end of the filter shell, and the sealing gasket 150 seals the lower end of the filter shell.

[0047] The moving driving mechanism 300 is arranged on the bottom plate 100.

[0048] The second sealing block 120, the third sealing block 130 and the fourth sealing block 140 are all connected with the output end of the moving driving mechanism 300. The moving driving mechanism 300 can drive the second sealing block 120, the third sealing block 130 and the fourth sealing block 140 to simultaneously approach the filter shell on the sealing gasket 150, so that the second sealing block 120 seals the second conduit 500 on the left side wall of the filter shell, and the third sealing block 130 and the fourth sealing block 140 respectively seal the plurality of through holes on the rear side wall and the right side wall of the filter shell.

[0049] The gas generating mechanism (not shown in the figure) is connected with the air inlet pipe 160, so that the gas generated by the gas generating mechanism can be filled into the inner cavity of the filter shell.

[0050] It can be understood that when it is necessary to leak test the filter shell, the tester can insert the first conduit 400 on the lower end of the filter shell into the air inlet pipe 160 on the bottom plate 100, and place the filter shell on the sealing gasket 150 so that the air inlet pipe 160 is in communication with the inner cavity of the filter shell. After the filter shell is placed, the tester can control the lifting adjusting mechanism 200, so that the lifting adjusting mechanism 200 drives the first sealing block 110 to descend and press against the upper end of the filter shell on the sealing gasket 150. Under the pressing action of the first sealing block 110, the pressure between the sealing gasket 150 and the lower end of the filter shell increases, so that the first sealing block 110 seals the upper end of the filter shell, and the sealing gasket 150 seals the lower end of the filter shell.

[0051] After the upper and lower ends of the filter shell are sealed, the tester controls the moving driving mechanism 300, so that the moving driving mechanism 300 drives the second sealing block 120, the third sealing block 130 and the fourth sealing block 140 to simultaneously move close to the filter shell on the sealing gasket 150, and the second sealing block 120, the third sealing block 130 and the fourth sealing block 140 simultaneously press on the second conduit 500 on the left side wall of the filter shell, the rear side wall and the right side wall respectively, so that the second sealing block 120 seals the second conduit 500 on the left side wall of the filter shell, and the third sealing block 130 and the fourth sealing block 140 seal the plurality of through holes on the rear side wall and the right side wall of the filter shell respectively, so as to complete the sealing step of the filter shell. After the sealing of the filter shell is completed, the tester starts the gas generating mechanism. The gas generated by the gas generating mechanism is filled into the inner cavity of the filter shell through the gas inlet pipe 160, and the gas pressure in the inner cavity of the filter shell is greater than the standard atmospheric pressure. When the tester hears the hissing sound of air leakage, it means that the filter shell has a leak, and is an unqualified filter shell. The tester can also immerse the filter shell leak detection device and the filter shell in water, and when bubbles are observed, it means that the filter shell has a leak, and the leak detection of the filter shell is completed. The filter shell leak detection device can not only seal the second conduit 500 and the plurality of through holes of the filter shell at the same time, but also seal the second conduit 500 and the upper and lower ends of the filter shell at the same time, thereby shortening the sealing time and improving the leak detection efficiency of the filter shell.

[0052] In the embodiment of the utility model, the gas inlet pipe 160 and the sealing gasket 150 are arranged between the second sealing block 120, the third sealing block 130 and the fourth sealing block 140. Figure 1 And Figure 2 The filter shell has three conduits, one of which is arranged on the lower end of the filter shell, and the other two are arranged on the left side wall of the filter shell. For the convenience of description, the conduit on the lower end of the filter shell is defined as the first conduit 400, the rear conduit on the left side wall is defined as the second conduit 500, and the front conduit on the left side wall is defined as the third conduit 600.

[0053] In the embodiment of the utility model, the second conduit 500 is installed in the through hole on the left side wall of the filter shell, and the second conduit 500 is communicated with the inner cavity of the filter shell. The third conduit 600 is not communicated with the inner cavity of the filter shell, and the third conduit 600 is actually installed in the horizontal pipe on the filter shell, so that the third conduit 600 does not need to be sealed during the leakage test. Further, in the embodiment of the utility model, two through holes are arranged on the rear side wall and the right side plate of the filter shell, and after the third sealing block 130 and the fourth sealing block 140 are abutted against the rear side wall and the right side wall of the filter shell respectively, the third sealing block 130 can seal the two through holes on the rear side wall at the same time, and the fourth sealing block 140 can seal the two through holes on the right side wall at the same time.

[0054] Reference Figure 3 And Figure 4 The lifting adjusting mechanism 200 comprises a transmission rod 240, a first swing piece 210, a second swing piece 220 and a first support 230, the first support 230 is arranged on the bottom plate 100, the transmission rod 240 is parallel to the up-down direction, the first swing piece 210 and the second swing piece 220 both have a first end and a second end, the first end of the first swing piece 210 is hinged to the first support 230, the second end of the first swing piece 210 is hinged to the second end of the second swing piece 220, the first end of the second swing piece 220 is hinged to the upper end of the transmission rod 240, the lower end of the transmission rod 240 is connected with the first sealing block 110, and the second end of the second swing piece 220 can swing in a direction away from the first support 230, so that the second swing piece 220 drives the transmission rod 240 to descend, and the first sealing block 110 is abutted against the upper end of the filter shell on the sealing gasket 150. The lifting adjusting mechanism 200 further comprises a first holding part 250, and the first holding part 250 is connected with the second swing piece 220.

[0055] It can be understood that after the tester places the filter shell to be detected on the sealing pad 150, the tester can hold the first holding part 250 and swing the first holding part 250 towards the bottom plate 100, under the driving action of the first holding part 250, the second end of the second swing part 220 swings away from the first support 230, the first swing part 210 supports the swing of the second swing part 220, at this time, the first end of the second swing part 220 drives the transmission rod 240 to descend, so that the transmission rod 240 drives the first sealing block 110 to descend, and then the first sealing block 110 is pressed on the filter shell on the sealing pad 150. After the filter shell leak detection is completed, the tester can hold the first holding part 250 and swing the first holding part 250 away from the bottom plate 100, under the driving action of the first holding part 250, the second end of the second swing part 220 swings towards the first support 230, the first swing part 210 supports the swing of the second swing part 220, at this time, the first end of the second swing part 220 drives the transmission rod 240 to ascend, so that the transmission rod 240 drives the first sealing block 110 to ascend, and then the first sealing block 110 releases the filter shell on the sealing pad 150.

[0056] It needs to be explained that in the utility model, with reference to Figure 3 and Figure 4 The first end and the second end of the first swing part 210 are respectively the upper end and the lower end of the first swing part 210, and the first end and the second end of the second swing part 220 are respectively the upper end and the lower end of the first swing part 210.

[0057] As an embodiment of the utility model, the first support 230 is provided with a first guide hole parallel to the up-down direction, and the transmission rod 240 is arranged in the first guide hole. It can be understood that the transmission rod 240 is arranged in the first guide hole on the first support 230, and the hole wall of the first guide hole can limit and guide the transmission rod 240, so that the transmission rod 240 can ascend or descend smoothly.

[0058] With reference to Figures 4 to 7The moving driving mechanism 300 comprises a transmission block 330, a first connecting rod assembly 310 and a second connecting rod assembly 320, the transmission block 330 is arranged at the back of the sealing gasket 150, the transmission block 330 is movably connected to the bottom plate 100 along the front-back direction, a third sealing block 130 is arranged on the side of the transmission block 330 facing the sealing gasket 150, a second sealing block 120 is arranged on the left side of the sealing gasket 150, the second sealing block 120 is drivingly connected with the transmission block 330 through the first connecting rod assembly 310, a fourth sealing block 140 is arranged on the right side of the sealing gasket 150, the fourth sealing block 140 is connected with the transmission block 330 through the second connecting rod assembly 320, so that when the transmission block 330 moves towards the sealing gasket 150, the second sealing block 120, the third sealing block 130 and the fourth sealing block 140 simultaneously move towards the filter shell on the sealing gasket 150.

[0059] It can be understood that after the detection personnel places the filter shell to be detected on the sealing gasket 150, the detection personnel can drive the transmission block 330 to move forward and close to the sealing gasket 150, because the second sealing block 120 is drivingly connected with the transmission block 330 through the first connecting rod assembly 310, the fourth sealing block 140 is arranged on the right side of the sealing gasket 150, and the fourth sealing block 140 is connected with the transmission block 330 through the second connecting rod assembly 320, so that the movement of the transmission block 330 can drive the second sealing block 120, the third sealing block 130 and the fourth sealing block 140 to simultaneously move towards the filter shell on the sealing gasket 150, so that the second sealing block 120 seals the second conduit 500 on the left side wall of the filter shell, and the third sealing block 130 and the fourth sealing block 140 respectively seal the plurality of through holes on the rear side wall and the right side wall of the filter shell. After the filter shell leak detection is completed, the detection personnel drives the transmission block 330 to move backward and away from the sealing gasket 150, and the movement of the transmission block 330 can drive the second sealing block 120, the third sealing block 130 and the fourth sealing block 140 to simultaneously move away from the filter shell on the sealing gasket 150, so that the filter shell is completely loosened.

[0060] Reference Figures 4 to 6 The moving driving mechanism 300 further comprises a second support 340 and a guide rod 350, the second support 340 is arranged on the bottom plate 100, a second guide hole parallel to the front-back direction is formed in the second support 340, the guide rod 350 is arranged in the second guide hole, and the front end of the guide rod 350 is connected with the transmission block 330. It can be understood that the front end of the guide rod 350 is connected with the transmission block 330, the guide rod 350 is arranged in the second guide hole of the second support 340, and the inner wall of the second guide hole can limit and guide the guide rod 350, so that the transmission block 330 can stably move along the front-back direction.

[0061] As an embodiment of the utility model, reference Figure 4 And Figure 5, the mobile driving mechanism 300 further comprises a hinged seat 360, a bending arm 370 and a second holding part 380, one end of the bending arm 370 is hinged to the other end of the guide rod 350, the other end of the bending arm 370 is hinged to the lower end of the second holding part 380, and the lower end of the second holding part 380 is hinged to the hinged seat 360. It can be understood that the tester swings the second holding part 380 so that the bending arm 370 can be pulled or pushed, thereby causing the guide rod 350 to pull or push the transmission block 330 to move in the front-back direction, which will not be further described here.

[0062] With reference to Figure 4 and Figure 6 , the first linkage assembly 310 comprises a first swing arm 311 and a second swing arm 312, both of which have a first end and a second end, the first end of the first swing arm 311 is hinged to the transmission block 330, the second end of the first swing arm 311 is hinged to the first end of the second swing arm 312, the second end of the second swing arm 312 is hinged to the second sealing block 120, and the middle part of the second swing arm 312 is hinged to the bottom plate 100. The included angle formed by the first swing arm 311 and the second swing arm 312 is right, when the transmission block 330 moves towards the sealing gasket 150, the first swing arm 311 and the second swing arm 312 move closer to each other, so that the second end of the second swing arm 312 drives the second sealing block 120 to move closer to the sealing gasket 150. It can be understood that the transmission block 330 moves forward to approach the sealing gasket 150, under the driving of the transmission block 330, the included angle formed by the first swing arm 311 and the second swing arm 312 decreases and moves closer to each other, at this time, the second end of the second swing arm 312 approaches the sealing gasket 150, so that the second end of the second swing arm 312 drives the second sealing block 120 to approach the sealing gasket 150. After the filter housing leak detection detection is completed, the tester drives the transmission block 330 to move backward away from the sealing gasket 150, at this time, the included angle formed by the first swing arm 311 and the second swing arm 312 increases and moves away from each other, at this time, the second end of the second swing arm 312 moves away from the sealing gasket 150, so that the second end of the second swing arm 312 drives the second sealing block 120 to move away from the sealing gasket 150.

[0063] With reference to Figure 6The first connecting rod assembly 310 further comprises a third swing arm 313 and a connecting column 314, the lower end of the connecting column 314 is connected with the bottom plate 100, the third swing arm 313 has a first end and a second end, the first end of the third swing arm 313 is hinged to the upper end of the connecting column 314, and the second end of the third swing arm 313 is hinged to the second sealing block 120. It can be understood that, under the limiting action of the third swing arm 313, the second sealing block 120 can be prevented from swinging at a large angle during the process of approaching and moving away from the sealing gasket 150, so that the second sealing block 120 can move smoothly in the left-right direction and only slightly move in the front-rear direction, thereby enabling the second sealing block 120 to accurately seal the filter housing. Specifically, the hinge between the second end of the second swing arm 312 and the second sealing block 120 and the hinge between the second end of the third swing arm 313 and the second sealing block 120 are diagonal to each other, and will not be further described here.

[0064] In the utility model, the structure and principle of the second connecting rod assembly 320 and the first connecting rod assembly 310 are completely same, the first connecting rod assembly 310 and the second connecting rod assembly 320 are symmetrical in the left-right direction, and will not be further described here. In the utility model embodiment, the first sealing block 110, the second sealing block 120, the third sealing block 130 and the fourth sealing block 140 are all flexible blocks, the first sealing block 110, the second sealing block 120, the third sealing block 130 and the fourth sealing block 140 are all provided with silica gel pads, and the first sealing block 110, the second sealing block 120, the third sealing block 130 and the fourth sealing block 140 all seal the filter housing through the silica gel pads. The sealing gasket 150 is also a flexible pad, and will not be further described here.

[0065] Reference Figure 3 And Figure 4 The bottom plate 100 is provided with a gas conveying channel, one end of the gas conveying channel is communicated with the gas inlet pipe 160, and the other end of the gas conveying channel is communicated with the output end of the gas generating mechanism. The filter housing leak detection device further comprises an adapter 170, the adapter 170 is connected with the bottom plate 100, one end of the adapter 170 extends into the gas conveying channel, and the other end of the adapter 170 is communicated with the output end of the gas generating mechanism. It can be understood that the gas generated by the gas generating mechanism enters the gas inlet pipe 160 through the adapter 170 and the gas conveying channel, and then the gas enters the filter housing through the gas inlet pipe 160.

[0066] As an embodiment of the utility model, the filter shell leak detection device further comprises a water tank (not shown in the figure) and a waterproof cylinder (not shown in the figure), the water tank is used for containing water, the cylinder body of the waterproof cylinder is arranged in the water tank and is connected with the inner bottom wall of the water tank, the piston rod of the waterproof cylinder is connected with the bottom plate 100, and the waterproof cylinder can drive the bottom plate 100 to descend, so that the filter shell can be immersed in the water in the water tank. It can be understood that after the filter shell is sealed, the detection personnel can start the waterproof cylinder, the waterproof cylinder can drive the bottom plate 100 to descend, so that the first sealing block 110, the second sealing block 120, the third sealing block 130, the fourth sealing block 140 and the filter shell are immersed in the water together. Then the detection personnel starts the gas generating mechanism, and when the detection personnel observes that bubbles are generated in the water, it means that the filter shell has a leak, and it is an unqualified product. The gas generating mechanism can be a gas pump, which will not be described further here.

[0067] The technical features of the above-described embodiments can be combined arbitrarily, and to make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present application.

[0068] Of course, the utility model is not limited to the above-mentioned implementation, and those skilled in the art can make equivalent modifications or replacements without departing from the spirit of the utility model, and these equivalent modifications or replacements are all included in the range defined by the claims of the present application.

Claims

1. A filter housing leak detection apparatus, characterized by, The utility model relates to a filter sealing device, which comprises: a base plate (100) provided with a sealing pad (150) for supporting a filter shell; an air inlet pipe (160) provided on the sealing pad (150) for inserting a first conduit on the lower end of the filter shell so that the air inlet pipe (160) communicates with the inner cavity of the filter shell; a lifting adjustment mechanism (200) provided on the base plate (100); a first sealing block (110) provided above the air inlet pipe (160) and connected with the output end of the lifting adjustment mechanism (200), which can drive the first sealing block (110) to press against the upper end of the filter shell on the sealing pad (150) so that the first sealing block (110) seals the upper end of the filter shell and the sealing pad (150) seals the lower end of the filter shell; a moving drive mechanism (300) provided on the base plate (100); a second sealing block (120), a third sealing block (130) and a fourth sealing block (140) all connected with the output end of the moving drive mechanism (300), which can drive the second sealing block (120), the third sealing block (130) and the fourth sealing block (140) to simultaneously approach the filter shell on the sealing pad (150) so that the second sealing block (120) seals a second conduit on the left side wall of the filter shell and the third sealing block (130) and the fourth sealing block (140) respectively seal a plurality of through holes on the rear side wall and the right side wall of the filter shell; a gas generating mechanism, the output end of which communicates with the air inlet pipe (160) so that the gas generated by the gas generating mechanism can be filled into the inner cavity of the filter shell.

2. The filter housing leak testing apparatus of claim 1, wherein: The lifting adjusting mechanism (200) comprises a transmission rod (240), a first swing member (210), a second swing member (220) and a first support (230), the first support (230) is arranged on the bottom plate (100), the transmission rod (240) is parallel to the up-down direction, the first swing member (210) and the second swing member (220) each have a first end and a second end, the first end of the first swing member (210) is hinged to the first support (230), the second end of the first swing member (210) is hinged to the second end of the second swing member (220), the first end of the second swing member (220) is hinged to the upper end of the transmission rod (240), the lower end of the transmission rod (240) is connected with the first sealing block (110), the second end of the second swing member (220) can swing away from the first support (230), so that the second swing member (220) drives the transmission rod (240) to descend, and the first sealing block (110) is pressed against the upper end of the filter shell on the sealing gasket (150).

3. The filter housing leak testing apparatus of claim 2, wherein: The lifting adjusting mechanism (200) further comprises a first holding part (250), and the first holding part (250) is connected with the second swing member (220).

4. The filter housing leak testing apparatus of claim 2, wherein: The first support (230) is provided with a first guide hole parallel to the up-down direction, and the transmission rod (240) is arranged in the first guide hole.

5. The filter housing leak testing apparatus of claim 1, wherein: The movement driving mechanism (300) comprises a transmission block (330), a first linkage assembly (310) and a second linkage assembly (320), the transmission block (330) is arranged behind the sealing gasket (150), the transmission block (330) is movably connected to the bottom plate (100) in the front-rear direction, the third sealing block (130) is arranged on the side of the transmission block (330) facing the sealing gasket (150), the second sealing block (120) is arranged on the left side of the sealing gasket (150), the second sealing block (120) is drivingly connected with the transmission block (330) through the first linkage assembly (310), the fourth sealing block (140) is arranged on the right side of the sealing gasket (150), and the fourth sealing block (140) is connected with the transmission block (330) through the second linkage assembly (320), so that when the transmission block (330) moves towards the sealing gasket (150), the second sealing block (120), the third sealing block (130) and the fourth sealing block (140) simultaneously approach the filter shell on the sealing gasket (150).

6. The filter housing leak testing apparatus of claim 5, wherein: The first linkage assembly (310) comprises a first swing arm (311) and a second swing arm (312), the first swing arm (311) and the second swing arm (312) each have a first end and a second end, the first end of the first swing arm (311) is hinged to the transmission block (330), the second end of the first swing arm (311) is hinged to the first end of the second swing arm (312), the second end of the second swing arm (312) is hinged to the second sealing block (120), the middle part of the second swing arm (312) is hinged to the bottom plate (100), the included angle formed by the first swing arm (311) and the second swing arm (312) is right, when the transmission block (330) moves towards the sealing gasket (150), the first swing arm (311) and the second swing arm (312) are close to each other, so that the second end of the second swing arm (312) drives the second sealing block (120) to move close to the sealing gasket (150).

7. The filter housing leak testing apparatus of claim 6, wherein: The first linkage assembly (310) further comprises a third swing arm (313) and a connecting column (314), the lower end of the connecting column (314) is connected to the bottom plate (100), the third swing arm (313) has a first end and a second end, the first end of the third swing arm (313) is hinged to the upper end of the connecting column (314), and the second end of the third swing arm (313) is hinged to the second sealing block (120).

8. The filter housing leak testing apparatus of claim 5, wherein: The movement driving mechanism (300) further comprises a second support (340) and a guide rod (350), the second support (340) is arranged on the bottom plate (100), the second support (340) is provided with a second guide hole parallel to the front and back directions, the guide rod (350) is arranged in the second guide hole, and the front end of the guide rod (350) is connected with the transmission block (330).

9. The filter housing leak testing apparatus of claim 1, wherein: The bottom plate (100) is provided with a gas conveying channel, one end of the gas conveying channel is communicated with the gas inlet pipe (160), and the other end of the gas conveying channel is communicated with the output end of the gas generating mechanism.

10. The filter housing leak testing apparatus of claim 9, wherein: The adapter (170) is connected with the bottom plate (100), one end of the adapter (170) extends into the gas conveying channel, and the other end of the adapter (170) is communicated with the output end of the gas generating mechanism.

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