Valve seat air tightness test tool
By designing a valve seat airtightness testing tool for multiple components, the problem of inability to quantify the valve seat sealing detection in the prior art is solved, and the accurate quantification of the valve seat sealing detection is achieved, and the reliability of the test results and the final product pass rate are improved.
Patent Information
- Application Number
- CN202323582134.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-27
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2033-12-27
AI Technical Summary
The prior art cannot achieve quantitative testing in valve seat seal detection, resulting in inaccurate results and subjective factors affecting the finished product pass rate is low.
A valve seat airtightness testing tool is designed, including a base, column, extension plate, compression assembly, testing table, annular groove, valve seat body, air inlet, air outlet, valve core, air outlet, air spool, air extraction nozzle, air exhaust pipe, differential pressure gauge, air pump, air inlet nozzle, air inlet, air inlet, pressure regulator and air pump. Through the synergy of these components, a quantitative test of valve seat sealing is achieved.
Accurate quantitative detection of valve seat sealing is achieved, the influence of subjective factors is reduced, and the reliability of the test results and the qualification rate of the finished product are improved.
Smart Images
Figure CN222652491U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of valve seats, in particular to a valve seat air tightness testing tool. Background Art
[0002] The valve seat is an important component of the valve, usually used to seal and control the flow of the fluid. Its main function is to enable the valve to be completely closed to ensure that the fluid does not leak out of the valve. In addition, by changing the shape and size of the valve seat, the flow and pressure of the fluid can also be adjusted to meet the needs of different applications. In the prior art, when testing the sealing of the valve seat, the test results cannot be quantified. The quality of the test results needs to be manually observed, which leads to a lot of uncertainty and is affected by certain subjective factors, which ultimately leads to inaccurate results and a low qualified rate of finished products. Utility Model Content
[0003] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present utility model is to provide a valve seat air tightness testing tool, which has the advantages of solving the problems raised in the above background technology.
[0004] The above technical objectives of the utility model are achieved through the following technical solutions:
[0005] A valve seat air tightness test fixture comprises a base, a column is vertically fixedly connected to the top of the base, an extension plate is fixedly connected to the top of the column, a clamping assembly is arranged at the bottom of the extension plate, a test platform is fixedly connected to the top of the base below the clamping assembly, an annular groove is arranged on the top surface of the test platform, a valve seat body is placed in the annular groove, an air inlet is arranged on the top of the valve seat body, a symmetrical first air outlet and a second air outlet are arranged on both sides of the valve seat body, the air inlet is communicated with the inside of the valve seat body, the first air outlet and the second air outlet, and the air inlet on the top of the valve seat body is sealed and connected There is a valve core, and a test assembly is provided between the first air outlet and the second air outlet, and the test assembly includes an air suction nozzle threadedly connected to the inner wall of the first air outlet, the air suction nozzle is connected to an air suction pipe, and the air suction pipe is also provided with a differential pressure gauge for observing air pressure changes, and the end of the air suction pipe away from the differential pressure gauge is connected to an air suction pump, and the air suction pump is arranged on the outer wall of the base, and the inner wall of the second air outlet is threadedly connected to an air inlet nozzle, the air inlet nozzle is connected to an air inlet pipe, and the air inlet pipe is also provided with a pressure regulating gauge for adjusting the air pressure, and the end of the air inlet pipe away from the pressure regulating gauge is connected to an air supply pump, and the air supply pump is arranged on the outer wall of the base.
[0006] By adopting the above technical solution, during the test operation, the operator places the valve seat body in the annular groove, then the operator opens the clamping assembly, cooperates with the valve core at the air inlet on the top of the valve seat body to control the gas to enter the interior of the valve seat body, then the operator respectively connects the vacuum nozzle threadedly to the first air outlet, and connects the air inlet nozzle threadedly to the second air outlet. At this time, the interior of the valve seat body is in a sealed state, then the operator turns on the air pump, cooperates with the air inlet pipe to send gas into the interior of the valve seat body, observes the state of the pressure regulating gauge during the air supply process, turns off the air pump when it displays a value in the specified range, stops the air supply operation, then the operator turns on the vacuum pump, cooperates with the vacuum pipe and the vacuum nozzle to exhaust the air inside the valve seat body to a vacuum state, and waits to observe the changes in the differential pressure gauge. If the value of the differential pressure gauge does not change, the air tightness test is passed.
[0007] Further configuration: the clamping assembly includes a clamping cylinder fixedly connected to the bottom of the extension plate, the bottom of the output end of the clamping cylinder is fixedly connected to a clamping plate, and telescopic rods are provided around the top of the clamping plate and between the bottom of the extension plate.
[0008] By adopting the above technical solution, during the test operation, the operator turns on the clamping cylinder and cooperates with the output end to move the pressure plate downward until the bottom of the pressure plate contacts the valve core at the top opening of the valve seat body, thereby completing the clamping operation. During the downward clamping process, the pressure plate cooperates with the setting of the telescopic rod to play a supporting and stabilizing role.
[0009] It is further provided that a clamping assembly is provided in the annular groove, and the clamping assembly includes clamping cylinders arranged on both sides of the annular groove, and a clamping plate is fixedly connected to one adjacent side of the output end of the clamping cylinder.
[0010] By adopting the above technical solution, during the test operation, the operator places the valve seat body in the annular groove. At this time, the operator simultaneously turns on the clamping cylinder and cooperates with the output end to move the clamping plates toward each other until they are moved to both sides of the valve seat body for fixation.
[0011] It is further configured that adjacent sides of the clamping plate are fixedly connected with anti-slip pads.
[0012] By adopting the above technical solution, when the clamping plate cooperates with other components to clamp the two sides of the bottom of the valve seat body, the anti-skid pad contacts the surface of the valve seat body to play an anti-skid and protective role.
[0013] It is further configured that a first sealing ring is sleeved on the outside of the air suction nozzle in the first air outlet, and a second sealing ring is sleeved on the outside of the air inlet nozzle in the second air outlet.
[0014] By adopting the above technical solution, the first sealing ring and the second sealing ring are provided to play a sealing role, thereby preventing gas source leakage from affecting the test operation.
[0015] Further configuration: a rubber pad is fixedly connected to the bottom of the pressing plate.
[0016] By adopting the above technical solution, when the pressure plate cooperates to press down the valve core at the top opening of the valve seat body, it contacts the valve core through the rubber pad, thus playing a certain protective role.
[0017] In summary, the utility model has the following beneficial effects:
[0018] During the test operation of the utility model, the operator places the valve seat body in the annular groove, then the operator opens the clamping assembly, cooperates with the valve core at the air inlet on the top of the valve seat body to control the gas to enter the interior of the valve seat body, then the operator respectively connects the vacuum nozzle threadedly to the first air outlet, and connects the air inlet nozzle threadedly to the second air outlet. At this time, the interior of the valve seat body is in a sealed state, then the operator starts the air pump, cooperates with the air inlet pipe to send gas into the interior of the valve seat body, observes the state of the pressure regulating gauge during the air supply process, turns off the air pump when it displays a value in the specified range, stops the air supply operation, then the operator starts the vacuum pump, cooperates with the vacuum pipe and the vacuum nozzle to exhaust the air inside the valve seat body to a vacuum state, and waits to observe the changes in the differential pressure gauge. If the value of the differential pressure gauge does not change, the air tightness test is passed. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application, but do not constitute an improper limitation of the present invention. In the drawings:
[0020] Figure 1 It is a main structural schematic diagram of the utility model;
[0021] Figure 2 It is the front view of the utility model.
[0022] In the figure, 1. base; 2. column; 3. extension plate; 4. clamping assembly; 5. test bench; 6. annular groove; 7. valve seat body; 8. air inlet; 9. first air outlet; 10. second air outlet; 11. valve core; 12. test assembly; 13. suction nozzle; 14. suction pipe; 15. differential pressure gauge; 16. suction pump; 17. suction nozzle; 18. intake pipe; 19. pressure regulating gauge; 20. air pump; 21. clamping cylinder; 22. pressure plate; 23. telescopic rod; 24. clamping assembly; 25. clamping cylinder; 26. splint; 27. anti-slip pad; 28. first sealing ring; 29. second sealing ring; 30. rubber pad. DETAILED DESCRIPTION
[0023] The above and other technical contents, features and functions of the present invention are described in detail below with reference to the attached Figure 1 To Attachment Figure 2The detailed description of the embodiments will clearly show that the structural contents mentioned in the following embodiments are all based on the drawings in the specification.
[0024] Various exemplary embodiments of the present utility model will be described below with reference to the accompanying drawings.
[0025] Embodiment 1: A valve seat air tightness test tool, such as Figure 1 , 2 As shown, it includes a base 1, a column 2 is vertically fixedly connected to the top of the base 1, an extension plate 3 is fixedly connected to the top of the column 2, a clamping assembly 4 is provided at the bottom of the extension plate 3, the clamping assembly 4 includes a clamping cylinder 21 fixedly connected to the bottom of the extension plate 3, a pressing plate 22 is fixedly connected to the bottom of the output end of the clamping cylinder 21, a rubber pad 30 is fixedly connected to the bottom of the pressing plate 22, telescopic rods 23 are provided around the top of the pressing plate 22 and the bottom of the extension plate 3, a detection platform 5 is fixedly connected to the top of the base 1 below the pressing plate 22, an annular groove 6 is opened on the top surface of the detection platform 5, a valve seat body 7 is placed in the annular groove 6, and a clamping assembly 30 is provided in the annular groove 6 Part 24, the clamping assembly 24 includes a clamping cylinder 25 arranged on both sides of the annular groove 6, and the adjacent side of the output end of the clamping cylinder 25 is fixedly connected with a clamping plate 26, and the adjacent side of the clamping plate 26 is fixedly connected with an anti-slip pad 27. During the test operation, the operator places the valve seat body 7 in the annular groove 6. At this time, the operator simultaneously starts the clamping cylinder 25, and cooperates with the output end to move the clamping plate 26 toward each other until it moves to both sides of the valve seat body 7 for fixation. Then the operator starts the clamping cylinder 21, and cooperates with the output end to move the pressing plate 22 downward until the bottom of the pressing plate 22 contacts the valve core 11 at the top opening of the valve seat body 7, and the clamping operation is completed.
[0026] like Figure 1As shown, an air inlet 8 is provided on the top of the valve seat body 7, and a symmetrical first air outlet 9 and a second air outlet 10 are provided on both sides of the valve seat body 7. The air inlet 8 is connected with the inside of the valve seat body 7, the first air outlet 9, and the second air outlet 10. A valve core 11 is sealed and connected to the air inlet 8 on the top of the valve seat body 7. A test component 12 is provided between the first air outlet 9 and the second air outlet 10. The test component 12 includes an air suction nozzle 13 threadedly connected to the inner side wall of the first air outlet 9, the air suction nozzle 13 is connected to an air suction pipe 14, and the air suction pipe 14 is also provided with a differential pressure gauge 15 for observing air pressure changes. The end of the air suction pipe 14 away from the differential pressure gauge 15 is connected to an air suction pump 16, and the air suction pump 16 is arranged on the outer wall of the base 1, and the inner side wall of the second air outlet 10 is threadedly connected to an air inlet nozzle 17, and the air inlet nozzle 17 is connected to an air inlet pipe 18, and the air inlet pipe 18 is also provided with a pressure regulating gauge for regulating air pressure 19. The end of the air inlet pipe 18 away from the pressure regulating gauge 19 is connected to an air pump 20. The air pump 20 is arranged on the outer wall of the base 1. The valve core 11 on the top of the valve seat body 7 cooperates with other components to press tightly to prevent air from entering. Then the operator respectively threadably connects the vacuum nozzle 13 to the first air outlet 9 and threadably connects the air inlet nozzle 17 to the second air outlet 10. At this time, the interior of the valve seat body 7 is in a sealed state. Then the operator turns on the air pump 20 and cooperates with the air inlet pipe 18 to deliver gas into the interior of the valve seat body 7. During the air delivery process, the state of the pressure regulating gauge 19 is observed. When the value displayed reaches the specified range, the air pump 20 is turned off to stop the air delivery operation. Then the operator turns on the vacuum pump 16 and cooperates with the vacuum pipe 14 and the vacuum nozzle 13 to exhaust the air inside the valve seat body 7 to a vacuum state, and waits to observe the changes in the differential pressure gauge 15. If the value of the differential pressure gauge 15 does not change, the air tightness test is passed.
[0027] like Figure 1 As shown, a first sealing ring 28 is sleeved on the outside of the air suction nozzle 13 in the first air outlet 9 , and a second sealing ring 29 is sleeved on the outside of the air inlet nozzle 17 in the second air outlet 10 .
[0028] In the embodiment of the utility model, during the test operation, the operator places the valve seat body 7 in the annular groove 6. At this time, the operator simultaneously starts the clamping cylinder 25 and cooperates with the output end to move the clamping plate 26 toward each other until it moves to both sides of the valve seat body 7 for fixation. Then the operator starts the clamping cylinder 21 and cooperates with the output end to move the pressing plate 22 downward until the bottom of the pressing plate 22 contacts the valve core 11 at the top opening of the valve seat body 7. The clamping operation is completed and the gas is controlled to enter the interior of the valve seat body 7. Then the operator respectively threads the suction nozzle 13 into the first gas outlet 9 and fixes it. The air inlet nozzle 17 is threadedly connected to the second air outlet 10. At this time, the interior of the valve seat body 7 is in a sealed state. Then the operator turns on the air pump 20, and cooperates with the air inlet pipe 18 to deliver gas into the interior of the valve seat body 7. During the air delivery process, the status of the pressure regulating gauge 19 is observed. When the value displayed reaches the specified range, the air pump 20 is turned off to stop the air delivery operation. Then the operator turns on the vacuum pump 16, and cooperates with the vacuum pipe 14 and the vacuum nozzle 13 to exhaust the air inside the valve seat body 7 to a vacuum state, and waits to observe the changes in the differential pressure gauge 15. If the value of the differential pressure gauge 15 does not change, the air tightness test is passed.
[0029] The above is a further detailed description of the present invention in combination with a specific implementation method, and it cannot be determined that the specific implementation of the present invention is limited to this; for technical personnel in the field of the present invention and related technical fields, based on the technical solution of the present invention, the expansion and replacement of operating methods and data should all fall within the protection scope of the present invention.
Claims
1. A valve seat air tightness test tool, comprising a base (1), characterized in that: The top of the base (1) is vertically fixedly connected to a column (2), the top of the column (2) is fixedly connected to an extension plate (3), the bottom of the extension plate (3) is provided with a clamping assembly (4), below the clamping assembly (4) is located at the top of the base (1) and fixedly connected to a detection platform (5), the top surface of the detection platform (5) is provided with an annular groove (6), a valve seat body (7) is placed in the annular groove (6), an air inlet (8) is provided at the top of the valve seat body (7), and two symmetrical first air outlets (9) and second air outlets (10) are provided on both sides of the valve seat body (7), the air inlet (8) is communicated with the inside of the valve seat body (7), the first air outlet (9), and the second air outlet (10), a valve core (11) is sealed and connected to the air inlet (8) at the top of the valve seat body (7), the first air outlet (9) and the second air outlet (10), the valve core (11) is sealed and connected to the valve core (11), the first air outlet (9) and the second air outlet (10) are connected to the valve core (11), and the valve core (11) is sealed and connected to the valve core (11) at the top of the valve seat body (7), and the valve core (11) is sealed and connected to the valve core (11) at the top of the valve seat body (7). A test assembly (12) is provided between the first and second air outlets (10), the test assembly (12) comprising an air suction nozzle (13) threadedly connected to the inner wall of the first air outlet (9), the air suction nozzle (13) being connected to an air suction pipe (14), the air suction pipe (14) being further provided with a differential pressure gauge (15) for observing changes in air pressure, the air suction pipe (14) being connected to an air suction pump (16) at one end away from the differential pressure gauge (15), the air suction pump (16) being arranged on the outer wall of the base (1), the inner wall of the second air outlet (10) being threadedly connected to an air inlet nozzle (17), the air inlet nozzle (17) being connected to an air inlet pipe (18), the air inlet pipe (18) being further provided with a pressure regulating gauge (19) for regulating air pressure, the air inlet pipe (18) being connected to an air supply pump (20) at one end away from the pressure regulating gauge (19), the air supply pump (20) being arranged on the outer wall of the base (1).
2. The valve seat air tightness test tool according to claim 1, characterized in that: The clamping assembly (4) comprises a clamping cylinder (21) fixedly connected to the bottom of the extension plate (3), a clamping plate (22) fixedly connected to the bottom of the output end of the clamping cylinder (21), and telescopic rods (23) are provided around the top of the clamping plate (22) and between the bottom of the extension plate (3).
3. The valve seat air tightness test tool according to claim 1, characterized in that: A clamping assembly (24) is provided in the annular groove (6), and the clamping assembly (24) comprises clamping cylinders (25) arranged on both sides of the annular groove (6), and a clamping plate (26) is fixedly connected to one side adjacent to the output end of the clamping cylinder (25).
4. The valve seat air tightness test tool according to claim 3, characterized in that: Adjacent sides of the clamping plate (26) are both fixedly connected with anti-slip pads (27).
5. The valve seat air tightness test tool according to claim 1, characterized in that: A first sealing ring (28) is sleeved on the outside of the air suction nozzle (13) in the first air outlet (9), and a second sealing ring (29) is sleeved on the outside of the air inlet nozzle (17) in the second air outlet (10).
6. The valve seat air tightness test tool according to claim 2, characterized in that: A rubber pad (30) is fixedly connected to the bottom of the pressing plate (22).