Sealing element air tightness detection equipment

Abstract

The invention relates to sealing element airtightness detection equipment, which comprises a bearing cabinet and a detection cabinet fixed above the bearing cabinet, the detection cabinet can generate high-pressure gas, a telescopic cylinder is fixed at the bottom of the detection cabinet, and a contact adjusting assembly is arranged at the bottom of the telescopic cylinder. The contact adjusting assembly is rotatably connected with a lifting plate which moves in the vertical direction, an upper testing tool connected with the contact adjusting assembly is arranged below the lifting plate, a telescopic communicating pipe II is fixed to the upper testing tool, and the telescopic communicating pipe II is in one-way communication with the upper testing tool through a spring one-way valve. The telescopic communicating pipe II is communicated with the detection cabinet through a lifting plate, the contact adjusting assembly is communicated with the lifting plate, and a lower testing tool located below the upper testing tool is arranged at the top of the bearing cabinet; the device has the advantage of facilitating detection of sealing elements with different thicknesses.

Description

Technical Field

[0001] The invention belongs to the technical field of air tightness detection equipment, and in particular relates to an air tightness detection equipment for sealing parts. Background Art

[0002] Seals are materials or parts that prevent fluids or solid particles from leaking from adjacent joint surfaces and prevent external impurities such as dust and moisture from invading the internal parts of machinery and equipment. After the seals are produced, they need to be tested for air tightness by air tightness testing equipment to prevent bad products from entering the market.

[0003] In the prior art, when testing, the airtightness testing equipment will confirm the telescopic length of the telescopic device according to the thickness of the seal to ensure that the test tool and the seal maintain contact. For seals with little thickness change, a pneumatic servo clamping system will be set to adjust the position of the test tool through a servo cylinder and a displacement sensor to adapt to seals of different thicknesses. Although the pneumatic servo clamping system can help the test tool to adjust its displacement, the pneumatic servo clamping system cannot be autonomously controlled based on changes in the test gas pressure, so that gas leakage may occur when the test gas pressure becomes higher, affecting the accuracy of the test. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a sealing member air tightness detection device which is convenient for detecting sealing members with different thicknesses.

[0005] The technical solution of the present invention is as follows:

[0006] A sealing component air tightness detection device comprises a bearing cabinet and a detection cabinet fixed above the bearing cabinet, the detection cabinet can generate high-pressure gas, a telescopic cylinder is fixed at the bottom of the detection cabinet, a contact adjustment component is arranged at the bottom of the telescopic cylinder, the contact adjustment component is rotatably connected with a lifting plate displaced in the up and down directions, an upper test fixture connected to the contact adjustment component is arranged below the lifting plate, a telescopic connecting pipe II is fixed to the upper test fixture, the telescopic connecting pipe II is unidirectionally connected to the upper test fixture through a spring one-way valve, the telescopic connecting pipe II is connected to the detection cabinet through the lifting plate, and the contact adjustment component is connected to the lifting plate;

[0007] A lower test fixture is arranged on the top of the load-bearing cabinet and is located below the upper test fixture.

[0008] Further, the contact adjustment assembly includes a connecting column fixed on the telescopic cylinder, a rotating barrel rotatably connected to the lifting plate, and a threaded column threadedly connected to the inside of the rotating barrel, the threaded column is fixed to the upper test fixture, a rotating cavity is opened inside the connecting column, the rotating barrel is rotationally sealed and connected in the rotating cavity to form an annular rotating cavity, and the rotating cavity has a plurality of fan plates fixed to the rotating barrel in contact sealing;

[0009] An air inlet hole and an air outlet hole are respectively provided on the side of the connecting column. The air inlet hole is connected to the lifting plate. Air enters from the air inlet hole and is discharged from the air outlet hole to drive the fan plate to rotate.

[0010] Furthermore, the fan plate is provided with a contact sealing gasket for contact sealing with the rotating chamber.

[0011] Furthermore, a chamber is provided above the connecting column, the connecting column is provided with a circular groove for plugging in the telescopic cylinder, at least one plug-in assembly and a plurality of limit assemblies are provided in the chamber, the telescopic cylinder is provided with a plug-in hole and a limit hole for plugging in the plug-in assembly and the limit assemblies, one end of the plug-in assembly is sealed through the connecting column and extends to the outside of the connecting column, and the plug-in assembly can discharge the gas in the chamber after rotating;

[0012] The chamber is in one-way communication with the rotating chamber, the gas in the air inlet hole can enter the chamber from the rotating chamber, and the limiting component is gradually inserted into the limiting hole as the air pressure in the chamber increases.

[0013] Furthermore, the plug-in assembly includes an exhaust seat and a plug-in column elastically connected in the chamber, the exhaust seat is fixed on the circular side of the chamber close to the connecting column, the plug-in column seals through the exhaust seat and is plugged into the plug hole, the exhaust seat is provided with at least one circular hole, the plug-in column is provided with an exhaust channel, the plug-in column is provided with a through hole connected to the exhaust channel, the through hole can be rotated to align with the circular hole, one end of the plug-in column seals through the connecting column and extends to the outside of the connecting column, and the exhaust channel is connected to the side of one end of the plug-in column extending out of the connecting column.

[0014] Furthermore, a hand wheel is provided at one end of the plug-in column extending out of the connecting column.

[0015] Furthermore, the limiting assembly includes a guide cylinder, a displacement piston sealed and inserted in the guide cylinder, and a limiting column fixed on the displacement piston. The guide cylinder is fixed on the circular side of the chamber close to the connecting column, the limiting column can be inserted in the limiting hole, and the displacement piston is elastically connected in the guide cylinder.

[0016] Furthermore, the lifting plate is provided with a connecting channel, and the connecting channel is connected to the contact adjustment component and the telescopic connecting pipe II through the rotating chamber and the spring one-way valve respectively. The lifting plate is fixedly connected to the telescopic connecting pipe I, and the telescopic connecting pipe I is connected to the detection cabinet. The lifting plate is connected to a linear guide rod through a linear bearing, and the linear guide rod is fixed on the detection cabinet and the load-bearing cabinet.

[0017] Furthermore, a base is provided on the top of the bearing cabinet, and the lower test tool is fixed on the base.

[0018] Furthermore, the detection cabinet is provided with a display screen.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention uses a contact adjustment component to extend the upper test fixture when the test air pressure increases, so as to ensure the contact between the upper test fixture and the seal, and to ensure the accuracy of the test. The telescopic connecting pipe II is used to limit the rotation of the upper test fixture, so as to ensure the normal downward movement of the upper test fixture, and to ensure the test;

[0021] 2. The present invention realizes temporary installation of the contact adjustment component and the telescopic cylinder and exhaust of the gas in the chamber through the plug-in component, so as to facilitate the installation and fixation of the contact adjustment component, and realizes secondary fixation through the limit component to ensure stable fixation.

[0022] In summary, the present invention has the advantage of being convenient for detecting seals of different thicknesses. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 For the present invention Figure 1 A schematic diagram of the enlarged structure of part A;

[0025] Figure 3 For the present invention Figure 2 A schematic diagram of the structure of a contact adjustment component;

[0026] Figure 4 For the present invention Figure 3 AA cross-sectional structural diagram;

[0027] Figure 5 For the present invention Figure 4 A schematic diagram of the enlarged structure of part B;

[0028] Figure 6 For the present invention Figure 1 Schematic diagram of the structure of the lifting plate.

[0029] In the figure, 1. load-bearing cabinet; 2. lower test fixture; 3. contact adjustment component; 31. exhaust hole; 32. limit assembly; 321. displacement piston; 322. limit column; 323. guide cylinder; 33. contact sealing gasket; 34. fan plate; 35. hand wheel; 36. round hole; 37. plug-in hole; 38. plug-in column; 39. exhaust seat; 30. exhaust channel; 301. chamber; 302. connecting column; 303. rotating barrel; 304. threaded column; 305. limit hole; 4. telescopic connecting pipe I; 5. telescopic cylinder; 6. detection cabinet; 7. display screen; 8. linear guide rod; 9. base; 10. upper test fixture; 11. lifting plate; 111. connecting channel; 112. spring one-way valve; 12. telescopic connecting pipe II. DETAILED DESCRIPTION

[0030] 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.

[0031] like Figures 1 to 6 As shown, a sealing component air tightness detection device includes a load-bearing cabinet 1 and a detection cabinet 6 fixed above the load-bearing cabinet 1, the detection cabinet 6 can generate high-pressure gas, a telescopic cylinder 5 is fixed at the bottom of the detection cabinet 6, a contact adjustment component 3 is arranged at the bottom of the telescopic cylinder 5, the contact adjustment component 3 is rotatably connected to a lifting plate 11 that moves in the up and down directions, an upper test fixture 10 connected to the contact adjustment component 3 is arranged below the lifting plate 11, the upper test fixture 10 is fixed with a telescopic connecting pipe II12, the telescopic connecting pipe II12 is unidirectionally connected to the upper test fixture 10 through a spring one-way valve 112, the telescopic connecting pipe II12 is connected to the detection cabinet 6 through the lifting plate 11, and the contact adjustment component 3 is connected to the lifting plate 11;

[0032] A lower test fixture 2 located below the upper test fixture 10 is provided on the top of the load-bearing cabinet 1;

[0033] It should be noted that the detection cabinet 6 is provided with a corresponding air pump, a gas storage device, and an air pressure detection sensor to generate high-pressure gas and deliver it to the corresponding equipment or components.

[0034] When in use, personnel place the seal in the lower test fixture 2, and then the telescopic cylinder 5 works and drives the lower lifting plate 11 and the test fixture to move downward, until the telescopic cylinder 5 stops after extending to a set length, and then the detection cabinet 6 outputs high-pressure gas to the lifting plate 11. At this time, under the action of the spring one-way valve 112, the gas first enters the contact adjustment component 3, so that the contact adjustment component 3 adjusts the position of the upper test fixture 10, and makes the upper test fixture 10 press down the contact seal to form a sealed contact, and then with the increase of air pressure, the spring one-way valve 112 opens, and enters the upper test fixture 10 through the telescopic connecting pipe II12 to test the air tightness of the seal, and with the increase of air pressure, similarly, the contact adjustment component 3 also gradually moves downward to squeeze the seal with the increase of air pressure to ensure the sealing effect, when the test is completed, the detection cabinet 6 extracts the gas in the lifting plate 11 to reset the contact adjustment component 3 and the upper test fixture 10;

[0035] It should be noted that the upper test fixture 10 and the lower test fixture 2 are contact-sealed with the sealing member using an elastic sealing ring or other elastic sealing members.

[0036] In this embodiment, the contact adjustment assembly 3 includes a connecting column 302 fixed on the telescopic cylinder 5, a rotating barrel 303 rotatably connected to the lifting plate 11, and a threaded column 304 threadedly connected to the inside of the rotating barrel 303, the threaded column 304 is fixed to the upper test fixture 10, a rotating cavity is opened inside the connecting column 302, the rotating barrel 303 is rotatably sealed and connected to the rotating cavity to form an annular rotating cavity, and the rotating cavity is contact-sealed with a plurality of fan plates 34 fixed to the rotating barrel 303;

[0037] The side of the connecting column 302 is provided with an air inlet and an air outlet 31, the air inlet is connected to the lifting plate 11, and air enters from the air inlet and is discharged from the air outlet 31 to drive the fan plate 34 to rotate;

[0038] When testing is required, the air pressure in the lifting plate 11 increases, and the air enters the rotating chamber from the air inlet and drives the fan plate 34 to rotate. The fan plate 34 drives the rotating barrel 303 to rotate. Under the action of the telescopic connecting pipe II12, the upper test fixture 10 cannot rotate, so the threaded column 304 moves downward to ensure the auxiliary displacement of the upper test fixture 10 and ensure contact with the sealing member.

[0039] When resetting is required, just extract the air;

[0040] The structure of driving the fan plate 34 to rotate forward and reversely by gas is a prior art, so it will not be described in detail.

[0041] In this embodiment, the fan plate 34 is provided with a contact sealing gasket 33 for contact sealing with the rotating chamber.

[0042] When in use, the contact seal between the fan plate 34 and the rotating chamber is ensured by the contact seal gasket 33, thereby ensuring the rotation of the fan plate 34.

[0043] In this embodiment, a chamber 301 is further provided above the connecting column 302, and a circular groove is provided on the connecting column 302 for plugging in the telescopic cylinder 5. At least one plug-in assembly and a plurality of limit assemblies 32 are provided in the chamber 301. The telescopic cylinder 5 is provided with a plug-in hole 37 and a limit hole 305 for plugging in the plug-in assembly and the limit assemblies 32. One end of the plug-in assembly is sealed through the connecting column 302 and extends to the outside of the connecting column 302. After the plug-in assembly rotates, the gas in the chamber 301 can be discharged.

[0044] The chamber 301 is unidirectionally connected to the rotating chamber, and the gas from the air inlet can enter the chamber 301 from the rotating chamber. The limiting component 32 is gradually inserted into the limiting hole 305 as the air pressure in the chamber 301 increases.

[0045] When the telescopic cylinder 5 is damaged and needs to be repaired, the personnel discharge the gas in the chamber 301 through the plug assembly, so that the limit assembly 32 is no longer inserted into the limit hole 305, and then pull the plug assembly out of the plug hole 37, so that the connecting column 302 is separated from the telescopic cylinder 5, and then the telescopic cylinder 5 is removed from the detection cabinet 6;

[0046] When the maintenance is completed, the telescopic cylinder 5 is re-fixed on the detection cabinet 6, and then the circular groove of the connecting column 302 is inserted into the telescopic cylinder 5, and the plug-in component is inserted into the plug-in hole 37. Then, as the air pressure of the lifting plate 11 increases, the air enters the chamber 301 from the rotating cavity, the air pressure in the chamber 301 increases, and the limit component 32 is gradually inserted into the limit hole 305. At this time, the fixation is completed. With each increase in air pressure, the insertion depth of the limit component 32 gradually increases to ensure the stability of the fixation.

[0047] In this embodiment, the plug assembly includes an exhaust seat 39 and a plug-in column 38 elastically connected to the chamber 301 by a spring, the exhaust seat 39 is fixed on the circular side of the chamber 301 close to the connecting column 302, the plug-in column 38 seals through the exhaust seat 39 and is plugged into the plug hole 37, the exhaust seat 39 is provided with at least one circular hole 36, the plug-in column 38 is provided with an exhaust channel 30, the plug-in column 38 is provided with a through hole connected to the exhaust channel 30, the through hole can be rotated to align with the circular hole 36, one end of the plug-in column 38 seals through the connecting column 302 and extends to the outside of the connecting column 302, and the exhaust channel 30 is connected to the side of one end of the plug-in column 38 extending out of the connecting column 302;

[0048] When in use, the plug-in column 38 is plugged into the plug-in hole 37, and the round hole 36 is not aligned with the through hole. When it needs to be removed, the staff rotates the plug-in column 38 to align the round hole 36 with the through hole. At this time, the gas in the chamber 301 is discharged, and the limiting component 32 is separated from the limiting hole 305. Then, the plug-in column 38 is pulled to separate the plug-in column 38 from the plug-in hole 37.

[0049] When installation is required, it is only necessary to rotate the plug-in column 38 to reset it so that the through hole does not correspond to the circular hole 36, and when the circular groove is inserted into the telescopic cylinder 5, the plug-in column 38 is elastically inserted into the plug-in hole 37;

[0050] In this embodiment, a hand wheel 35 is fixed to one end of the plug-in column 38 extending out of the connecting column 302;

[0051] When in use, the hand wheel 35 is provided to facilitate the rotation and pulling of the plug-in column 38, thereby ensuring the use.

[0052] In this embodiment, the limiting assembly 32 includes a guide cylinder 323, a displacement piston 321 sealed and inserted in the guide cylinder 323, and a limiting column 322 fixed on the displacement piston 321. The guide cylinder 323 is fixed on the circular side of the chamber 301 close to the connecting column 302. The limiting column 322 can be inserted in the limiting hole 305. The displacement piston 321 is elastically connected to the guide cylinder 323 through a spring.

[0053] When in use, the plug-in column 38 is inserted into the plug-in hole 37, at which time the limit column 322 is aligned with the limit hole 305. Then, as the air pressure in the chamber 301 increases, the displacement piston 321 displaces along the guide cylinder 323 and drives the limit column 322 to gradually be inserted into the limit hole 305. When the air pressure in the chamber 301 decreases, the displacement piston 321 elastically resets and drives the limit column 322 to disengage from the limit hole 305.

[0054] In this embodiment, the lifting plate 11 is provided with a communication channel 111, and the communication channel 111 is connected to the contact adjustment component 3 and the telescopic communication pipe II12 through the rotating chamber and the spring one-way valve 112 respectively. The lifting plate 11 is fixedly connected with the telescopic communication pipe I4, and the telescopic communication pipe I4 is connected with the detection cabinet 6. The lifting plate 11 is connected with the linear guide rod 8 through the linear bearing, and the linear guide rod 8 is fixed on the detection cabinet 6 and the load-bearing cabinet 1;

[0055] When in use, gas is transported through the connecting channel 111 to ensure use, and the lifting and lowering guidance of the lifting plate 11 is achieved through the linear guide rod 8 to avoid tilting of the upper test fixture 10 and ensure detection.

[0056] In this embodiment, a base 9 is fixed on the top of the carrying cabinet 1 , and the lower testing tool 2 is fixed on the base 9 .

[0057] In this embodiment, a display screen 7 is fixed to the detection cabinet 6 .

[0058] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sealing component air tightness testing device, comprising a carrying cabinet and a testing cabinet fixed above the carrying cabinet, wherein the testing cabinet can generate high-pressure gas, and is characterized in that: A telescopic cylinder is fixed at the bottom of the detection cabinet, a contact adjustment component is arranged at the bottom of the telescopic cylinder, the contact adjustment component is rotatably connected with a lifting plate displaced in the up and down directions, an upper test fixture connected to the contact adjustment component is arranged below the lifting plate, a telescopic connecting pipe II is fixed to the upper test fixture, the telescopic connecting pipe II is unidirectionally connected to the upper test fixture through a spring one-way valve, the telescopic connecting pipe II is connected to the detection cabinet through the lifting plate, and the contact adjustment component is connected to the lifting plate; A lower test fixture is arranged on the top of the load-bearing cabinet and is located below the upper test fixture.

2. The sealing component air tightness detection device according to claim 1, characterized in that: The contact adjustment assembly includes a connecting column fixed on the telescopic cylinder, a rotating barrel rotatably connected to the lifting plate, and a threaded column threadedly connected to the inside of the rotating barrel, the threaded column is fixed to the upper test fixture, a rotating cavity is opened inside the connecting column, the rotating barrel is rotationally sealed and connected in the rotating cavity to form an annular rotating cavity, and the rotating cavity has a plurality of fan plates fixed to the rotating barrel for contact sealing; An air inlet hole and an air outlet hole are respectively provided on the side of the connecting column. The air inlet hole is connected to the lifting plate. Air enters from the air inlet hole and is discharged from the air outlet hole to drive the fan plate to rotate.

3. A sealing component air tightness detection device according to claim 2, characterized in that: The fan plate is provided with a contact sealing gasket which contacts and seals with the rotating chamber.

4. The sealing component air tightness detection device according to claim 3, characterized in that: A chamber is also provided above the connecting column, the connecting column is provided with a circular groove for plugging in the telescopic cylinder, at least one plug-in assembly and a plurality of limit assemblies are arranged in the chamber, the telescopic cylinder is provided with a plug-in hole and a limit hole for plugging in the plug-in assembly and the limit assemblies, one end of the plug-in assembly is sealed through the connecting column and extends to the outside of the connecting column, and the plug-in assembly can discharge the gas in the chamber after rotating; The chamber is in one-way communication with the rotating chamber, the gas in the air inlet hole can enter the chamber from the rotating chamber, and the limiting component is gradually inserted into the limiting hole as the air pressure in the chamber increases.

5. The sealing component air tightness detection device according to claim 4, characterized in that: The plug-in assembly includes an exhaust seat and a plug-in column elastically connected in the chamber, the exhaust seat is fixed on the circular side of the chamber close to the connecting column, the plug-in column seals through the exhaust seat and is plugged into the plug hole, the exhaust seat is provided with at least one circular hole, the plug-in column is provided with an exhaust channel, the plug-in column is provided with a through hole connected to the exhaust channel, the through hole can be rotated to align with the circular hole, one end of the plug-in column seals through the connecting column and extends to the outside of the connecting column, and the exhaust channel is connected to the side of one end of the plug-in column extending out of the connecting column.

6. The sealing component air tightness detection device according to claim 5, characterized in that: A hand wheel is arranged at one end of the plug-in column extending out of the connecting column.

7. The sealing component air tightness detection device according to claim 6, characterized in that: The limiting assembly includes a guide cylinder, a displacement piston sealed and inserted in the guide cylinder, and a limiting column fixed on the displacement piston. The guide cylinder is fixed on the circular side of the chamber close to the connecting column. The limiting column can be inserted in the limiting hole. The displacement piston is elastically connected in the guide cylinder.

8. The sealing component air tightness detection device according to claim 7, characterized in that: The lifting plate is provided with a communication channel, and the communication channel is connected to the contact adjustment component and the telescopic connecting pipe II through the rotating chamber and the spring one-way valve respectively. The lifting plate is fixedly connected with the telescopic connecting pipe I, and the telescopic connecting pipe I is connected to the detection cabinet. The lifting plate is connected with a linear guide rod through a linear bearing, and the linear guide rod is fixed on the detection cabinet and the load-bearing cabinet.

9. The sealing component air tightness detection device according to claim 8, characterized in that: A base is arranged on the top of the bearing cabinet, and the lower test tool is fixed on the base.

10. The sealing component air tightness detection device according to claim 1, characterized in that: The detection cabinet is provided with a display screen.

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