Pressurized air tightness detection device

Abstract

The utility model discloses a pressurized air tightness detection device, which comprises a base and an air tightness detector, the base is provided with a clamping sealing mechanism, the clamping sealing mechanism comprises a top plate and a driving assembly, the top plate is arranged on one side of the top end of the base, and the projection area of the top plate on the base is a to-be-detected piece placing area. The top plate clamps and seals the to-be-tested piece by pressing and covering an opening of the to-be-tested piece, the driving assembly comprises an operation module and a plurality of threaded sleeves, the threaded sleeves are fixedly connected to the outer side of the bottom end of the top plate, and the threaded sleeves drive the top plate to ascend and descend through the operation module. When air tightness detection is carried out, a to-be-detected piece can be placed on the base with an upward opening, and then the to-be-detected piece can be extruded from top to bottom by using the top plate, so that a clamping effect can be provided for the to-be-detected piece so as to ensure the stability of the to-be-detected piece in the detection process, and the opening of the to-be-detected piece can be sealed, so that the air tightness of the to-be-detected piece is ensured. Therefore, the airtightness test of the to-be-tested piece can be completed by operating the airtightness detector.

Description

Technical Field

[0001] The utility model relates to the technical field of air tightness detection, in particular to a pressurized air tightness detection device. Background Art

[0002] Air tightness testing involves forcing compressed air (or ammonia, Freon, helium, halogen gas, etc.) into a container and using the pressure difference between the inside and outside of the container to detect leaks. This test requires an air tightness tester, a device specifically designed for product leak detection. Its intelligent, embedded control design automates the test process and automatically determines the test results.

[0003] During airtightness testing, the DUT must maintain a stable state to prevent external factors such as vibration and temperature fluctuations from affecting the changes in the gas inside the container. This ensures that the airtightness testing equipment can accurately measure the gas leakage rate or pressure changes, thereby obtaining reliable test results. Therefore, by reducing the interference experienced by the DUT during the testing process, the testing equipment can more accurately determine the airtightness status of the DUT.

[0004] A search revealed that Chinese utility model patent publication number CN208458952U discloses a lamp airtightness test device comprising an airtightness test box, a control box, and a base plate. The airtightness test box is provided with a lid and a handle above the lid. The inner wall of the airtightness test box is provided with an air inlet, a pressure sensor, and a fixing member. The air inlet and pressure sensor are both located on the upper side of the airtightness test box wall. The air inlet is provided with a valve, and several fixing members are provided on the side wall of the airtightness test box. A control box is provided on the right side of the airtightness test box. The control box includes a central processing unit, a display screen, adjustment buttons, and a notepad. The central processing unit is located inside the control box. This application uses a spring to push the suction cup into contact with the test piece to maintain stability during the test. However, both the spring and the suction cup are flexible components, so the stability they can provide to the test piece is limited, making it difficult to ensure that the test piece will not shift during the test, which in turn causes inconvenience during the test process. Utility Model Content

[0005] In view of the above-mentioned prior art, the present invention provides a pressurized air tightness testing device, the main technical problem to be solved is how to improve the stability of the test piece during the testing process.

[0006] To achieve the above-mentioned purpose, the technical solution of the embodiment of the utility model is implemented as follows:

[0007] A pressurized air tightness testing device includes a base and an air tightness tester. The base is provided with a clamping and sealing mechanism, which includes a top plate and a driving assembly. The top plate is located on one side of the top end of the base, and the projection area of ​​the top plate on the base is the test piece placement area. The top plate clamps and seals the test piece by pressing the opening of the test piece. The driving assembly includes an operating module and several threaded sleeves. The threaded sleeves are fixedly connected to the outer side of the bottom end of the top plate, and the threaded sleeves drive the top plate to rise and fall through the operating module.

[0008] Furthermore, a cavity is opened on one side of the interior of the base, and a first through hole is opened on one side of the cavity at the top and bottom ends of the base. The operating module includes a first threaded rod, which is rotatably connected to the base at the two first through holes. The bottom end of the first threaded rod is fixedly connected to a turntable, and a handle is rotatably connected to one side of the bottom end of the turntable.

[0009] Furthermore, the inner wall of the bottom end of the base is rotatably connected to the second threaded rod at both ends on the side away from the first threaded rod, and two second through holes are opened at the top of the base. The two second threaded rods extend to the outside of the base at the two second through holes respectively, and the first threaded rod and the two second threaded rods are arranged in an equilateral triangle.

[0010] Furthermore, there are three threaded sleeves, and the three threaded sleeves are respectively threadedly connected to the outside of the top ends of the first threaded rod and the two second threaded rods. The outsides of the rod bodies of the first threaded rod and the two second threaded rods in the cavity are connected to pulleys through keys, and the outer sleeves of the three pulleys are provided with the same belt.

[0011] Furthermore, a roller is rotatably connected to the inner wall of the bottom end of the base between any two adjacent pulleys, and the belt is wound around the outside of the roller.

[0012] Furthermore, a third through hole is opened in the middle of the plate body of the top plate, and the top plate is fixedly connected to a pipe at the third through hole, the pipe is a hard pipe, the air tightness detector is arranged on one side of the top end of the base, and a connecting pipe is provided between the air tightness detector and the pipe, the connecting pipe is a hose, and a sealing gasket is fixedly connected to the bottom end of the top plate, the material of the sealing gasket is rubber, and the sealing gasket is in a circular ring shape.

[0013] Furthermore, the top of the base is rotatably connected to several support rods between the three threaded sleeves, a torsion spring is fixedly connected between the support rods and the base, and the top of the support rods is rotatably connected to a roller, and the four outer corners of the bottom end of the base are fixedly connected to support feet.

[0014] Furthermore, a gasket is fixedly connected to the top of the base in the middle between the three threaded sleeves. The gasket and the top plate are on the same axis and the gasket is circular. The top of the base is fixedly connected to several positioning rings on the outside of the gasket. The positioning rings are circular and the diameters of the positioning rings gradually increase from the inside to the outside. The center of the gasket coincides with the diameter of the positioning ring, and the gasket and the positioning rings are both made of rubber.

[0015] The beneficial effects of the present invention are:

[0016] 1. When performing an airtightness test, the device can place the test piece on the base with its opening facing upwards. The top plate can then be used to squeeze the test piece from top to bottom. This not only provides a clamping effect to ensure its stability during the test, but also seals its opening. Therefore, the airtightness test of the test piece can be completed by operating the airtightness tester. When adjusting the top plate, the three threaded rods can be rotated simultaneously by shaking the handle. The synchronized rotation of the three rods drives the top plate to rise and fall smoothly, providing sufficient stability and sealing for the test piece.

[0017] 2. By providing torsion springs and rollers, the support rods can maintain the rollers in an inwardly tilted state under the elastic force of the torsion springs. Therefore, when the workpiece to be tested is placed between the rollers, the rollers can fit the outer wall of the workpiece to be tested and squeeze it to achieve the effect of supporting the workpiece to be tested, thereby ensuring the convenience of installing the workpiece to be tested and maintaining its upright state, so as to facilitate the clamping and sealing effect of the top plate on the workpiece to be tested;

[0018] 3. By arranging gaskets and positioning rings at positions on the base corresponding to the top plate, these two rubber materials can replace the base in contact with the test piece, thereby increasing the friction between the two and providing a cushioning effect for the latter, thereby further ensuring the stability and safety of the test piece during the test process; in addition, the circular gasket and several annular positioning rings can facilitate the alignment adjustment of the test piece with the pipe when placing it, so that the axes of the two coincide, thereby ensuring stable clamping and good sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front cross-sectional view of a pressurized air tightness detection device in Example 1 of the present application;

[0020] Figure 2 A top view of a belt of a pressurized air tightness detection device in Example 1 of the present application;

[0021] Figure 3 This is a three-dimensional diagram of the base of a pressurized air tightness detection device in Example 2 of the present application.

[0022] Description of Figure Numbers:

[0023] Base 1, gasket 101, positioning ring 102, handle 2, support leg 3, turntable 4, pulley 5, belt 6, roller 7, second threaded rod 8, air tightness tester 9, connecting pipe 10, pipeline 11, sealing gasket 12, top plate 13, threaded sleeve 14, roller 15, support rod 16, first threaded rod 17, torsion spring 18. DETAILED DESCRIPTION

[0024] The following is a further detailed description of the technical solution of the present invention in conjunction with the accompanying drawings and specific embodiments of the specification. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. In the following description, reference is made to "some embodiments", which describes a subset of all possible embodiments, but it should be understood that "some embodiments" may be the same subset or different subsets of all possible embodiments, and may be combined with each other without conflict.

[0025] It should also be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "inner," "outer," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0026] Example 1

[0027] Refer to the attached Figure 1-2 The present application provides a pressurized air tightness testing device, including a base 1 and an air tightness tester 9. The base 1 is provided with a clamping and sealing mechanism, which includes a top plate 13 and a driving assembly. The top plate 13 is located on one side of the top end of the base 1, and the projection area of ​​the top plate 13 on the base 1 is the test piece placement area. The top plate 13 clamps and seals the test piece by pressing the opening of the test piece. The driving assembly includes an operating module and several threaded sleeves 14. The threaded sleeves 14 are fixedly connected to the outer side of the bottom end of the top plate 13, and the threaded sleeves 14 drive the top plate 13 to rise and fall through the operating module.

[0028] Preferably, a cavity is opened on one side of the interior of the base 1, and a first through hole is opened on one side of the cavity at the top and bottom ends of the base 1. The operating module includes a first threaded rod 17, and the first threaded rod 17 is rotatably connected to the base 1 at the two first through holes. The bottom end of the first threaded rod 17 is fixedly connected to the turntable 4, and the handle 2 is rotatably connected to one side of the bottom end of the turntable 4.

[0029] Preferably, the inner wall of the bottom end of the base 1 is rotatably connected to the second threaded rod 8 at both ends on the side away from the first threaded rod 17, and two second through holes are opened at the top of the base 1. The two second threaded rods 8 extend to the outside of the base 1 at the two second through holes respectively, and the first threaded rod 17 and the two second threaded rods 8 are arranged in an equilateral triangle.

[0030] When performing an airtightness test, the handle 2 can be held to shake the turntable 4, which can drive the first threaded rod 17 to rotate. The first threaded rod 17 can drive the two second threaded rods 8 to rotate through the pulley 5 and the belt 6. The synchronous rotation of these three can make the three threaded sleeves 14 move in the vertical direction, thereby driving the top plate 13 to rise and fall.

[0031] Therefore, by shaking the handle 2, the top plate 13 can be adjusted to rise first, and then the test piece is placed between the several support rods 16 with the opening facing upward. The handle 2 is then shaken in the opposite direction to adjust the top plate 13 to fall, so that the top plate 13 can cover the test piece. This can not only clamp and fix the test piece, but also seal its opening with the sealing gasket 12 to facilitate its airtightness test.

[0032] Preferably, there are three threaded sleeves 14, and the three threaded sleeves 14 are respectively threadedly connected to the top exterior of the first threaded rod 17 and the two second threaded rods 8. The outside of the rod body of the first threaded rod 17 and the two second threaded rods 8 in the cavity is connected to the pulley 5 by a key, and the outer sleeve of the three pulleys 5 is provided with the same belt 6. The inner wall of the bottom end of the base 1 is rotatably connected to the roller 7 between any two adjacent pulleys 5. The belt 6 is wound around the outside of the roller 7. The roller 7 can push the belt 6 to wrap around the outside of the pulley 5, thereby providing a sufficient wrap angle for the pulley 5, so that the three pulleys 5 can rotate synchronously under the action of the belt 6, thereby making the lifting and lowering adjustment process of the top plate 13 smoother and more stable.

[0033] Preferably, the top of the base 1 is rotatably connected to several support rods 16 between the three threaded sleeves 14, a torsion spring 18 is fixedly connected between the support rods 16 and the base 1, and the top of the support rods 16 is rotatably connected to a roller 15, and the four outer corners of the bottom end of the base 1 are fixedly connected to support feet 3.

[0034] During the above process, the support rod 16, under the elastic force of the torsion spring 18, allows the roller 15 to be in close contact with the outer wall of the workpiece to be tested, so that the roller 15 can squeeze the workpiece to be tested to achieve a supporting effect, thereby maintaining the upright state of the workpiece to be tested, ensuring that the top plate 13 can seal and stably clamp it. When taking and placing the workpiece to be tested, the roller 15 rolls after contacting the outer wall of the workpiece to be tested, making the taking and placing process more convenient.

[0035] Preferably, a third through hole is opened in the middle of the plate body of the top plate 13, and the top plate 13 is fixedly connected to a pipe 11 at the third through hole, the pipe 11 is a hard pipe, the air tightness detector 9 is arranged on one side of the top end of the base 1, and a connecting pipe 10 is provided between the air tightness detector 9 and the pipe 11, the connecting pipe 10 is a hose, and the bottom end of the top plate 13 is fixedly connected to a sealing gasket 12, the material of the sealing gasket 12 is rubber, and the sealing gasket 12 is annular.

[0036] Afterwards, the air tightness detector 9 can be started. The air tightness detector 9 can fill the test piece with high-pressure gas through the connecting tube 10 and the pipeline 11, thereby realizing its air tightness detection by pressurizing.

[0037] Example 2

[0038] Refer to the attached Figure 3 , the present application provides a pressurized air tightness detection device. Compared with Example 1, in order to ensure the stability and safety of the test piece during the test process, a gasket 101 is fixedly connected to the top of the base 1 in the middle between the three threaded sleeves 14. The gasket 101 and the top plate 13 are on the same axis, and the gasket 101 is circular. The top of the base 1 is fixedly connected to the outside of the gasket 101 with several positioning rings 102. The positioning rings 102 are circular, and the diameters of the positioning rings 102 gradually increase from the inside to the outside. The center of the gasket 101 coincides with the diameter of the positioning ring 102, and the gasket 101 and the positioning ring 102 are both made of rubber.

[0039] When the DUT is placed on the base 1, the circular gasket 101 and the plurality of annular positioning rings 102 facilitate the alignment of the DUT and the pipe 11 so that the two are on the same axis, thereby ensuring that the top plate 13 seals and stably clamps the DUT. In addition, the rubber gasket 101 and positioning rings 102 can replace the base 1 in contact with the DUT, thereby increasing the friction between the two and providing a cushioning effect for the latter, thereby ensuring the stability and safety of the DUT during the test process.

[0040] The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited to them. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this utility model should be included in the scope of protection of the present utility model. The scope of protection of the present utility model should be based on the scope of protection of the claims.

Claims

1. A pressurized airtightness detection device, comprising a base (1) and an airtightness detector (9), characterized in that: The base (1) is provided with a clamping and sealing mechanism, which comprises a top plate (13) and a driving assembly. The top plate (13) is located at one side of the top end of the base (1). The projection area of ​​the top plate (13) on the base (1) is a test piece placement area. The top plate (13) clamps and seals the test piece by pressing the opening of the test piece. The driving assembly comprises an operating module and a plurality of threaded sleeves (14). The threaded sleeves (14) are fixedly connected to the outer side of the bottom end of the top plate (13). The threaded sleeves (14) drive the top plate (13) to rise and fall through the operating module.

2. A pressurized airtightness detection device according to claim 1, characterized in that: A cavity is provided at one side of the interior of the base (1), and first through holes are provided at the top and bottom of the base (1) on one side of the cavity. The operating module comprises a first threaded rod (17), and the first threaded rod (17) is rotatably connected to the base (1) at two first through holes. The bottom end of the first threaded rod (17) is fixedly connected to a turntable (4), and a handle (2) is rotatably connected to one side of the bottom end of the turntable (4).

3. A pressurized airtightness detection device according to claim 2, characterized in that: The inner wall of the bottom end of the base (1) is rotatably connected to second threaded rods (8) at both ends on the side away from the first threaded rod (17); the top of the base (1) is provided with two second through holes; the two second threaded rods (8) extend to the outside of the base (1) at the two second through holes respectively; the first threaded rod (17) and the two second threaded rods (8) are arranged in an equilateral triangle.

4. A pressurized airtightness detection device according to claim 3, characterized in that: The number of the threaded sleeves (14) is three, and the three threaded sleeves (14) are respectively threadedly connected to the top outer portions of the first threaded rod (17) and the two second threaded rods (8). The outsides of the rod bodies of the first threaded rod (17) and the two second threaded rods (8) in the cavity are all connected to pulleys (5) through keys, and the outer portions of the three pulleys (5) are provided with the same belt (6).

5. A pressurized airtightness detection device according to claim 4, characterized in that: The inner wall of the bottom end of the base (1) is rotatably connected to a roller shaft (7) between any two adjacent pulleys (5), and the belt (6) is wound around the outside of the roller shaft (7).

6. A pressurized airtightness detection device according to claim 1, characterized in that: A third through hole is provided at the middle of the plate body of the top plate (13); a pipe (11) is fixedly connected to the top plate (13) at the third through hole; the pipe (11) is a hard pipe; the air tightness detector (9) is arranged at one side of the top end of the base (1); a connecting pipe (10) is provided between the air tightness detector (9) and the pipe (11); the connecting pipe (10) is a hose; a sealing gasket (12) is fixedly connected to the bottom end of the top plate (13); the sealing gasket (12) is made of rubber and is in a circular ring shape.

7. A pressurized airtightness detection device according to claim 1, characterized in that: The top of the base (1) is rotatably connected to a plurality of support rods (16) between three threaded sleeves (14), a torsion spring (18) is fixedly connected between the support rods (16) and the base (1), the top of the support rods (16) is rotatably connected to a roller (15), and the four outer corners of the bottom end of the base (1) are fixedly connected to support feet (3).

8. The pressurized airtightness detection device according to claim 1, characterized in that: A gasket (101) is fixedly connected to the top of the base (1) at the middle between the three threaded sleeves (14), the gasket (101) and the top plate (13) are on the same axis, the gasket (101) is circular, and a plurality of positioning rings (102) are fixedly connected to the top of the base (1) at the outer side of the gasket (101), the positioning rings (102) are annular, the diameters of the plurality of positioning rings (102) gradually increase from the inside to the outside, the center of the gasket (101) coincides with the diameter of the positioning ring (102), and the gasket (101) and the positioning ring (102) are both made of rubber.

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