A complex valve body air tightness detection tool

Abstract

The application relates to a complex valve body airtightness detection tool, which comprises a water tank, an air cylinder and a detection mechanism, the detection mechanism comprises a bottom disc, a supporting column, a supporting disc, a first sealing mechanism, a second sealing mechanism and a fixing air cylinder, the first sealing mechanism is fixed on the supporting column, the first sealing mechanism is a first air cylinder, a first sliding rail is arranged above the bottom disc, the second sealing mechanism comprises a sliding plate, a sliding block and a second air cylinder, the sliding plate is slidably connected with the first sliding rail through the sliding block, the sliding plate is provided with a vertical opening and a second sliding rail, and the second air cylinder moves up and down along the second sliding rail. In the application, the second sealing mechanism can move left and right along the bottom disc, the second air cylinder moves up and down along the vertical opening, the sealing demand of openings at different positions can be met, a plurality of second sealing mechanisms are arranged, the sealing demand of a plurality of openings can be met, the fixing air cylinder drives a rubber pad to press the surface of the complex valve body, the fixation of the complex valve body is realized, and the accuracy of the airtightness detection is ensured.

Description

Technical Field

[0001] This application relates to the field of testing tooling technology, and more specifically, to a complex valve body airtightness testing tooling. Background Technology

[0002] Valve bodies, as pipeline control components in the gas or liquid transmission process, are widely used in industries closely related to residential life and industrial production, such as gas and oil. When substandard valve bodies enter the market and are used in work or daily life, leaks may occur, potentially causing serious consequences. Therefore, after the valve body is manufactured, it is usually necessary to perform airtightness testing to ensure product quality.

[0003] In existing technologies, the airtightness testing of valve bodies typically uses submersible testing devices. That is, a sealing plate is installed on an output device such as a cylinder, the valve body is placed on a worktable, and the cylinder's movement presses the sealing plate against the valve body's opening to seal it. Simultaneously, gas is introduced into the valve body, and the worktable moves down, submerging the valve body into a water tank. The airtightness is then checked manually for air bubbles. However, most existing airtightness testing fixtures are designed for simple valve bodies. For complex valve bodies with multiple openings, such as those with... Figure 1 The complex valve body shown in the image involves multiple openings, making it difficult to guarantee a seal. Therefore, the testing of specific valve bodies usually requires customization, which increases the cost of testing the airtightness of complex valve bodies. Thus, it is extremely important to design a tooling for testing the airtightness of complex valve bodies to solve the above problems. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a complex valve body airtightness testing fixture, wherein the second sealing mechanism can be freely adjusted in position, can meet the sealing requirements of openings at different positions, and is suitable for sealing operations of complex valve body openings.

[0005] The objective of this application is achieved through the following technical solution:

[0006] A complex valve body airtightness testing fixture includes a water tank, a pneumatic cylinder, and a testing mechanism. The output shaft of the pneumatic cylinder is fixed to the testing mechanism. The pneumatic cylinder is located inside the water tank. The testing mechanism includes a chassis, a support column, a support plate, a first sealing mechanism, a second sealing mechanism, and a fixing cylinder. The support column connects the chassis and the support plate. The fixing cylinder is installed above the support plate. A sealing gasket is provided on the chassis. The first sealing mechanism is fixed to the support column. The first sealing mechanism is a first cylinder. A first plug is fixed to the end of the output shaft of the first cylinder. A first slide rail is provided above the chassis and below the support plate. The second sealing mechanism includes a sliding plate, a slider, and a second cylinder. The sliding plate slides with the first slide rail through the slider. The sliding plate has a vertical opening and a second slide rail. The second cylinder moves up and down along the second slide rail. The output shaft of the second cylinder extends out from the vertical opening. A second plug is fixed to the end of the output shaft of the second cylinder.

[0007] As a further improvement of this application, the bottom of the second cylinder is provided with a fixing plate, the fixing plate is provided with a threaded hole, the fixing plate cooperates with the second slide rail, and the threaded hole is provided with a tightening screw.

[0008] As a further improvement to this application, the second sealing mechanism is provided with multiple components.

[0009] As a further improvement of this application, a rubber pad is fixed to the end of the output shaft of the fixed cylinder, and the rubber pad extends between the chassis and the support plate.

[0010] As a further improvement of this application, the chassis is provided with a third slide rail and a moving block, the moving block and the third slide rail are slidably engaged, and the sealing gasket is fixed above the moving block.

[0011] As a further improvement of this application, the first slide rail includes a body and a movable end, and a mounting hole is provided between the body and the movable end, and a fixing bolt is installed in the mounting hole.

[0012] As a further improvement of this application, the testing fixture also includes an air source and a controller. The controller is used to control the working state of the pneumatic cylinder, the first cylinder, the second cylinder, and the fixed cylinder. The air source is connected to the pneumatic cylinder, the first cylinder, the second cylinder, and the fixed cylinder.

[0013] As a further improvement to this application, the first plug and the second plug are detachably connected.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This invention can seal the openings of complex valve bodies. The second sealing mechanism can move left and right along the chassis, and the second cylinder can move up and down along the vertical opening, which can meet the sealing requirements of openings at different positions. Multiple second sealing mechanisms are provided to meet the sealing requirements of multiple openings. The fixed cylinder drives the rubber pad to press the surface of the complex valve body to fix the complex valve body and ensure the accuracy of airtightness testing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the complex valve body to be tested for sealing in this application;

[0017] Figure 2 A schematic diagram of the overall structure of a complex valve body airtightness testing fixture provided for some embodiments of this application;

[0018] Figure 3 A cross-sectional view of a complex valve body airtightness testing fixture provided for some embodiments of this application;

[0019] Figure 4 A schematic diagram of the specific structure of a testing mechanism for a complex valve body airtightness testing fixture provided for some embodiments of this application;

[0020] Figure 5 Another structural schematic diagram of a testing mechanism for a complex valve body airtightness testing fixture provided for some embodiments of this application;

[0021] Figure 6 This is a schematic diagram of the specific structure of the sliding plate of a complex valve body airtightness testing fixture provided for some embodiments of this application.

[0022] Icons: 1. Water tank; 2. Pneumatic cylinder; 3. Chassis; 4. Support column; 5. Support plate; 6. Fixed cylinder; 7. First cylinder; 8. Sliding plate; 9. Sliding block; 10. Second cylinder; 11. Sealing gasket; 12. First slide rail; 13. Vertical opening; 14. Second slide rail; 15. Fixed plate; 16. Tightening screw; 17. Third slide rail; 18. Moving block; 19. Movable end. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments. The same reference numerals in the accompanying drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the described embodiments of this application without creative effort are within the scope of protection of this application.

[0024] Compared to the embodiments shown in the accompanying drawings, feasible embodiments within the scope of this application may have fewer components, other components not shown in the drawings, different components, differently arranged components, or components with different connections, etc. Furthermore, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0025] in Figure 1 This is a schematic diagram of the complex valve body structure to be tested for sealing in this application, which has several openings on its side wall.

[0026] This application proposes a complex valve body airtightness testing fixture, comprising a water tank 1, a pneumatic cylinder 2, and a testing mechanism. The output shaft of the pneumatic cylinder 2 is fixed to the testing mechanism. The pneumatic cylinder 2 is located inside the water tank 1. The pneumatic cylinder 2 is used to drive the testing mechanism to rise and fall to test the airtightness of the complex valve body. The testing mechanism includes a base 3, a support column 4, a support plate 5, a first sealing mechanism, a second sealing mechanism, and a fixing cylinder 6. The support column 4 connects the base 3 and the support plate 5. The fixing cylinder 6 is installed above the support plate 5. A rubber pad is fixed to the end of the output shaft of the fixing cylinder 6. The rubber pad extends between the base 3 and the support plate 5. The fixing cylinder 6 controls the extension and retraction of the rubber pad to press the top wall of the complex valve body, thereby fixing the complex valve body. A sealing gasket 11 is provided on the base 3 to seal the bottom of the complex valve body. A sealing mechanism is fixed on the support column 4. The first sealing mechanism is a first cylinder 7. The output shaft of the first cylinder 7 is fixed with a first plug. The first plug is used to seal the openings at both ends of the complex valve body. A first slide rail 12 is provided above the chassis 3 and below the support plate 5. The second sealing mechanism includes a sliding plate 8, a slider 9, and a second cylinder 10. The sliding plate 8 slides with the first slide rail 12 through the slider 9. The second cylinder 10 can move left and right along the direction of the first slide rail 12. The sliding plate 8 is provided with a vertical opening 13 and a second slide rail 14. The second cylinder 10 moves up and down along the second slide rail 14. Thus, the position of the second cylinder 10 can be freely adjusted to meet the sealing requirements of openings at different heights on the side wall of the complex valve body. The output shaft of the second cylinder 10 extends from the vertical opening 13. A second plug is fixed at the end of the output shaft of the second cylinder 10.

[0027] The second cylinder 10 has a fixed plate 15 at its bottom. The fixed plate 15 has a threaded hole and cooperates with the second slide rail 14. The threaded hole has a tightening screw 16, which can tighten the fixed plate 15 and the slide plate 8 to ensure that the position of the second cylinder 10 is relatively stable.

[0028] The system includes three second sealing mechanisms. The number of second sealing mechanisms can be adjusted according to the number of lateral openings to meet the sealing requirements of different complex valve bodies.

[0029] The chassis 3 is provided with a third slide rail 17 and a moving block 18. The moving block 18 and the third slide rail 17 are slidably engaged. The sealing gasket 11 is fixed above the moving block 18. The moving block 18 can be adjusted according to the position of the opening below the complex valve body to meet the sealing requirements.

[0030] Specifically, the first slide rail 12 includes a body and a movable end 19. A mounting hole is provided between the body and the movable end 19, and a fixing bolt is installed in the mounting hole. The movable end 19 can control the width of the first slide rail 12, thereby clamping the slider 9 to fix the sliding plate 8.

[0031] Specifically, the testing fixture also includes an air source and a controller, the controller being used to control... gas The working state of the pressure cylinder 2, the first cylinder 7, the second cylinder 10, and the fixed cylinder 6, wherein the air source is connected to the pressure cylinder 2, the first cylinder 7, the second cylinder 10, and the fixed cylinder 6.

[0032] The first plug and the second plug are detachably connected, and the plugs are replaceable to meet the sealing requirements of complex valve bodies with different opening sizes.

[0033] In use, the complex valve body is first fixed on the moving block 18, and the moving block 18 is moved inward along the third slide rail 17. At this time, the controller controls the first cylinder 7 and the fixed cylinder 6 to work. The first plug is used to seal the openings at both ends of the complex valve body. The fixed cylinder 6 presses the top wall of the complex valve body. Then, the sliding plate 8 slides with the first slide rail 12 through the slider 9. The second cylinder 10 can move left and right along the first slide rail 12 and up and down along the second slide rail 14. Thus, the position of the second cylinder 10 can be freely adjusted to control the movement of the second cylinder 10. The second plug seals the openings at different heights on the side wall of the complex valve body. Finally, the pneumatic cylinder 2 is used to drive the detection mechanism to move down and into the water tank 1 for the airtightness detection of the complex valve body.

[0034] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art, all of which fall within the protection scope of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A complex valve body airtightness testing fixture, comprising a water tank (1), a pneumatic cylinder (2), and a testing mechanism, characterized in that, The output shaft of the pneumatic cylinder (2) is fixed with a detection mechanism. The pneumatic cylinder (2) is located inside the water tank (1). The detection mechanism includes a chassis (3), a support column (4), a support plate (5), a first sealing mechanism, a second sealing mechanism, and a fixed cylinder (6). The support column (4) is used to connect the chassis (3) and the support plate (5). The fixed cylinder (6) is installed above the support plate (5). A sealing gasket (11) is provided on the chassis (3). The first sealing mechanism is fixed on the support column (4). The first sealing mechanism is a first cylinder (7). The end of the output shaft of the first cylinder (7) A first plug is fixed thereon. A first slide rail (12) is provided above the chassis (3) and below the support plate (5). The second sealing mechanism includes a sliding plate (8), a slider (9), and a second cylinder (10). The sliding plate (8) slides with the first slide rail (12) through the slider (9). The sliding plate (8) is provided with a vertical opening (13) and a second slide rail (14). The second cylinder (10) moves up and down along the second slide rail (14). The output shaft of the second cylinder (10) extends out from the vertical opening (13). A second plug is fixed at the end of the output shaft of the second cylinder (10).

2. The complex valve body airtightness testing fixture according to claim 1, characterized in that, The bottom of the second cylinder (10) is provided with a fixing plate (15), the fixing plate (15) is provided with a threaded hole, the fixing plate (15) cooperates with the second slide rail (14), and the threaded hole is provided with a tightening screw (16).

3. The complex valve body airtightness testing fixture according to claim 1, characterized in that, The second sealing mechanism has multiple components.

4. The complex valve body airtightness testing fixture according to claim 1, characterized in that, A rubber pad is fixed to the end of the output shaft of the fixed cylinder (6), and the rubber pad extends between the chassis (3) and the support plate (5).

5. The complex valve body airtightness testing fixture according to claim 1, characterized in that, The chassis (3) is provided with a third slide rail (17) and a moving block (18), the moving block (18) and the third slide rail (17) are slidably engaged, and the sealing gasket (11) is fixed above the moving block (18).

6. The complex valve body airtightness testing fixture according to claim 1, characterized in that, The first slide rail (12) includes a body and a movable end (19), and a mounting hole is provided between the body and the movable end (19), and a fixing bolt is installed in the mounting hole.

7. The complex valve body airtightness testing fixture according to claim 1, characterized in that, The testing fixture also includes an air source and a controller. The controller is used to control the working state of the pneumatic cylinder (2), the first cylinder (7), the second cylinder (10), and the fixed cylinder (6). The air source is connected to the pneumatic cylinder (2), the first cylinder (7), the second cylinder (10), and the fixed cylinder (6).

8. The complex valve body airtightness testing fixture according to claim 1, characterized in that, The first plug and the second plug are detachably connected.

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