Valve seat pressing air tightness test tool
By designing the valve seat pressing air tightness test tooling, using clamping and pressing components to control the gas, and using differential pressure gauge to detect air pressure changes, the problem of inaccurate valve seat sealing detection in the prior art is solved, and high-accurate air tightness detection is achieved.
Patent Information
- Application Number
- CN202323583009.3
- 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 compressed air tightness test tool is designed, including a base, a testing table, a clamping groove, a slider, a drive assembly, a valve seat body, an air inlet, an air outlet, a valve core, a pressed assembly and a test assembly. By driving the assembly to clamp the valve seat, pressing the assembly to control gas entry and extraction, the differential pressure gauge shows the air pressure change, achieving air tightness detection.
The test tool can accurately detect the airtightness of the valve seat, reduce the influence of subjective factors, and improve the accuracy of the test results and the qualification rate of the finished product.
Smart Images
Figure CN222652492U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of valve seats, in particular to a valve seat pressing 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 invention is to provide a valve seat pressing air tightness testing tool, which has the advantages of solving the above-mentioned background technology.
[0004] The above technical objectives of the utility model are achieved through the following technical solutions:
[0005] A valve seat press-fit air tightness test fixture comprises a base, a test bench is fixedly connected to the top of the base, a clamping groove is provided on the top surface of the test bench, a first slider and a second slider are slidably matched in the clamping groove, a driving component for driving the first slider and the second slider to move toward each other is provided in the clamping groove, the tops of the first slider and the second slider are both extended to the outside of the clamping groove, a clamping block is fixedly connected to the adjacent side of the extended end of the first slider and the second slider, a valve seat body is placed between the clamping blocks, and the top of the valve seat body is An air inlet is provided, and an air outlet is opened on the outer wall of the valve seat body. The air inlet is connected with the inside of the valve seat body and the air outlet. A valve core is sealed at the air inlet, a pressing assembly is provided above the valve core, and a test assembly is provided at the air outlet. The test assembly includes an air outlet nozzle threadedly connected to the inner wall of the air outlet, the air outlet nozzle is connected to an air extraction pipe, and a differential pressure gauge for observing air pressure changes is also provided on the air extraction pipe. The air extraction pipe is connected to an air extraction pump at one end away from the differential pressure gauge, and the air extraction pump is arranged on the outer wall of the base.
[0006] By adopting the above technical solution, during the inspection operation, the operator places the valve seat body on the surface of the inspection table. At this time, the operator turns on the driving assembly to drive the first slider and the second slider to move toward each other until the clamping blocks on the adjacent side of the first slider and the second slider clamp the two sides of the valve seat body. Then the operator turns on the pressing assembly to press the valve core at the air inlet of the valve seat body from top to bottom to control the gas entry. Then the operator connects the air outlet nozzle to the inner side of the air outlet to block the external air from entering the valve seat body. At this time, the remaining gas inside the valve seat body will flow through the exhaust pipe, and the differential pressure gauge will display the air pressure value at that time. Then the operator turns on the exhaust pump and cooperates with the exhaust pipe to extract the excess gas inside the valve seat body. After the extraction is completed, wait and observe the change of the value of the differential pressure gauge. If the differential pressure gauge does not change, the air tightness test can be passed.
[0007] Further configuration: the driving assembly includes fixed seats arranged on both sides of the clamping, a screw rod is rotatably connected between the fixed seats, the first slider and the second slider are matched and connected to the outside of the screw rod, and a hand wheel is fixedly connected to the extending end of the screw rod.
[0008] By adopting the above technical solution, during the inspection operation, the operator turns the hand wheel to drive the screw to rotate. At this time, the first slider and the second slider on the screw cooperate to move toward each other until the first slider and the second slider move toward each other to the two sides of the valve seat body and are clamped and fixed.
[0009] Further configuration: the pressing assembly includes a column vertically fixedly connected to the top of the base, an extension plate fixedly connected to the top of the column, one end of the extension plate extends to above the valve seat body, a pressing cylinder is fixedly connected to the bottom of the extension plate above the valve seat body, and a pressing plate is fixedly connected to the bottom of the output end of the pressing cylinder.
[0010] By adopting the above technical solution, during the inspection operation, the operator turns on the pressing cylinder and cooperates with the pressing plate to squeeze vertically downward until the bottom of the pressing plate contacts the extruded valve core to prevent air from entering the interior of the valve seat body.
[0011] It is further configured that a fitting plate is provided at the bottom of the pressing plate, a plurality of damping rods are provided between the top of the fitting plate and the pressing plate, and springs are sleeved on the outer sides of the plurality of damping rods.
[0012] By adopting the above technical solution, when the pressure plate cooperates with other components to squeeze downward, it contacts the valve core through the bottom of the fitting plate. At this time, the setting of multiple damping rods between the fitting plate and the pressure plate and the cooperation of the springs play a certain role in supporting the clamping operation.
[0013] It is further configured that a sealing ring is sleeved on the outside of the air outlet nozzle in the air outlet.
[0014] By adopting the above technical solution, when the air outlet nozzle is threadedly connected to the air outlet, the setting of the sealing ring can play a certain sealing role, thereby preventing gas leakage during the detection process from affecting the inspection effect.
[0015] It is further configured that adjacent sides of the clamping block are fixedly connected with anti-slip pads.
[0016] By adopting the above technical solution, when the clamp block cooperates with other components to clamp and fix the two sides of the valve seat body, the anti-skid pads are arranged on the two sides of the valve seat body to play a protective and anti-skid role.
[0017] In summary, the utility model has the following beneficial effects:
[0018] The utility model is equipped with a test assembly. The operator opens the pressing assembly and cooperates to press the valve core at the air inlet of the valve seat body from top to bottom to control the gas entering. Then the operator connects the air outlet nozzle to the inner side of the air outlet with a thread to block the external air from entering the valve seat body. At this time, the remaining gas inside the valve seat body will flow through the exhaust pipe, and the air pressure value at that time will be displayed by the differential pressure gauge. Then the operator starts the exhaust pump and cooperates with the exhaust pipe to exhaust the excess gas inside the valve seat body. After the exhaust is completed, wait and observe the change of the value of the differential pressure gauge. If the differential pressure gauge does not change, the air tightness test can be passed.
[0019] The utility model is equipped with a clamping assembly. During the inspection operation, the operator turns the hand wheel to drive the screw to rotate. At this time, the first slider and the second slider on the screw cooperate to move toward each other until the clamping blocks arranged on the adjacent sides of the first slider and the second slider move toward each other to the two sides of the valve seat body and cooperate to clamp and fix them. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] 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:
[0021] Figure 1 It is a main structural schematic diagram of the utility model;
[0022] Figure 2 It is the front view of the utility model.
[0023] In the figure, 1. base; 2. test table; 3. clamping groove; 4. first slider; 5. second slider; 6. drive assembly; 7. clamping block; 8. valve seat body; 9. air inlet; 10. air outlet; 11. valve core; 12. pressing assembly; 13. test assembly; 14. air outlet nozzle; 15. exhaust pipe; 16. differential pressure gauge; 17. exhaust pump; 18. fixed seat; 19. screw rod; 20. hand wheel; 21. column; 22. extension plate; 23. pressing cylinder; 24. pressure plate; 25. fitting plate; 26. damping rod; 27. spring; 28. sealing ring; 29. anti-slip pad. DETAILED DESCRIPTION
[0024] 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 2 The 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.
[0025] Various exemplary embodiments of the present utility model will be described below with reference to the accompanying drawings.
[0026] Embodiment 1: A valve seat press-fit airtightness test tool, such as Figure 1 , 2 As shown, it includes a base 1, a detection platform 2 is fixedly connected to the top of the base 1, a clamping groove 3 is opened on the top surface of the detection platform 2, a first slider 4 and a second slider 5 are slidably matched in the clamping groove 3, a driving component 6 for driving the first slider 4 and the second slider 5 to move toward each other is provided in the clamping groove 3, the driving component 6 includes a fixed seat 18 arranged on both sides of the clamping, a screw rod 19 is rotatably connected between the fixed seats 18, the first slider 4 and the second slider 5 are matched and connected to the outside of the screw rod 19, the extending end of the screw rod 19 is fixedly connected to a hand wheel 20, the first slider 4 and the second slider 5 are matched and connected to the outside of the screw rod 19, the extending end of the screw rod 19 is fixedly connected to the ... The top of the second slider 5 extends to the outside of the clamping groove 3, and the adjacent sides of the first slider 4 and the second slider 5 are fixedly connected with a clamping block 7, and the adjacent sides of the clamping block 7 are fixedly connected with an anti-slip pad 29, and a valve seat body 8 is placed between the clamping blocks 7. During the inspection operation, the operator turns the hand wheel 20 to drive the screw rod 19 to rotate. At this time, the first slider 4 and the second slider 5 on the screw rod 19 cooperate to move toward each other until the clamping blocks 7 set on the adjacent sides of the first slider 4 and the second slider 5 move toward each other to both sides of the valve seat body 8 and are clamped and fixed.
[0027] like Figure 1 , 2As shown, an air inlet 9 is provided on the top of the valve seat body 8, and an air outlet 10 is provided on the outer wall of the valve seat body 8. The air inlet 9 is communicated with the inside of the valve seat body 8 and the air outlet 10. A valve core 11 is sealed and connected at the air inlet 9. A pressing assembly 12 is provided above the valve core 11. The pressing assembly 12 includes a column 21 vertically fixedly connected to the top of the base 1. An extension plate 22 is fixedly connected to the top of the column 21. One end of the extension plate 22 extends to the top of the valve seat body 8. A pressing cylinder 23 is fixedly connected to the bottom of the extension plate 22 above the valve seat body 8. The pressing cylinder 23 is fixedly connected to the bottom of the extension plate 22. A pressure plate 24 is fixedly connected to the bottom of the output end of the cylinder 23, and a fitting plate 25 is provided at the bottom of the pressure plate 24. A plurality of damping rods 26 are provided between the top of the fitting plate 25 and the pressure plate 24, and springs 27 are sleeved on the outer sides of the plurality of damping rods 26. During the inspection operation, the operator turns on the pressing cylinder 23 and cooperates with the pressure plate 24 to squeeze vertically downward. When the pressure plate 24 cooperates with the downward squeezing, it contacts the valve core 11 through the bottom of the fitting plate 25. At this time, the setting of the plurality of damping rods 26 between the fitting plate 25 and the pressure plate 24 and the cooperation of the springs 27 play a certain role in supporting the pressing operation.
[0028] like Figure 1 As shown, a test assembly 13 is provided at the air outlet 10, and the test assembly 13 includes an air outlet nozzle 14 threadedly connected to the inner wall of the air outlet 10, and a sealing ring 28 is sleeved on the outer side of the air outlet nozzle 14 in the air outlet 10, and the air outlet nozzle 14 is connected to an exhaust pipe 15, and a differential pressure gauge 16 for observing air pressure changes is also provided on the exhaust pipe 15, and an exhaust pump 17 is connected to the end of the exhaust pipe 15 away from the differential pressure gauge 16, and the exhaust pump 17 is arranged on the outer wall of the base 1. The operator opens the pressing assembly 12 and cooperates to press the air inlet 9 of the valve seat body 8 from top to bottom. The valve core 11 controls the gas to enter, and then the operator connects the air outlet nozzle 14 to the inner side of the air outlet 10 with a thread to block the external air from entering the valve seat body 8. At this time, the remaining gas inside the valve seat body 8 will flow through the exhaust pipe 15, and the differential pressure gauge 16 will display the air pressure value at that time. Then the operator starts the exhaust pump 17 and cooperates with the exhaust pipe 15 to extract the excess gas inside the valve seat body 8. After the extraction is completed, wait and observe the value change of the differential pressure gauge 16. If the differential pressure gauge does not change, the air tightness test can be passed.
[0029] In the embodiment of the utility model, during the inspection operation, the operator places the valve seat body 8 on the surface of the inspection table 2, and then the operator manually turns the hand wheel 20 to drive the screw rod 19 to rotate. At this time, the first slider 4 and the second slider 5 on the screw rod 19 cooperate to move toward each other until the clamping block 7 set on the adjacent side of the first slider 4 and the second slider 5 moves toward each other to the two sides of the valve seat body 8, and cooperates to clamp and fix. Then the operator turns on the pressing cylinder 23 and cooperates with the pressing plate 24 to squeeze vertically downward. When the pressing plate 24 cooperates to squeeze downward, it contacts the valve core 11 through the bottom of the fitting plate 25. At this time, the fitting plate 25 and the pressing plate 2 4 and the cooperation of the spring 27 play a certain role in supporting and pressing the valve. Finally, the operator connects the air outlet nozzle 14 to the inner side of the air outlet 10 with a thread to block the external air from entering the valve seat body 8. At this time, the remaining gas in the valve seat body 8 will flow through the exhaust pipe 15, and the pressure value at that time will be displayed by the differential pressure gauge 16. Then the operator starts the exhaust pump 17 and cooperates with the exhaust pipe 15 to extract the excess gas in the valve seat body 8. After the extraction is completed, wait and observe the value change of the differential pressure gauge 16. If the differential pressure gauge does not change, the air tightness test can be passed.
[0030] 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 press-fit air tightness test tool, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a test bench (2); a clamping groove (3) is provided on the top surface of the test bench (2); a first slider (4) and a second slider (5) are slidably fitted in the clamping groove (3); a driving component (6) for driving the first slider (4) and the second slider (5) to move towards each other is provided in the clamping groove (3); the tops of the first slider (4) and the second slider (5) extend to the outside of the clamping groove (3); a clamping block (7) is fixedly connected to the adjacent sides of the extended ends of the first slider (4) and the second slider (5); a valve seat body (8) is placed between the clamping blocks (7); an air inlet (9) is provided on the top of the valve seat body (8); and an outer wall of the valve seat body (8) is provided. The air outlet (10) is connected between the air inlet (9) and the interior of the valve seat body (8) and the air outlet (10); the air inlet (9) is sealed with a valve core (11); a pressing assembly (12) is provided above the valve core (11); a test assembly (13) is provided at the air outlet (10); the test assembly (13) includes an air outlet nozzle (14) threadedly connected to the inner wall of the air outlet (10); the air outlet nozzle (14) is connected to an air extraction pipe (15); a differential pressure gauge (16) for observing air pressure changes is also provided on the air extraction pipe (15); the end of the air extraction pipe (15) away from the differential pressure gauge (16) is connected to an air extraction pump (17); the air extraction pump (17) is arranged on the outer wall of the base (1).
2. The valve seat press-fit air tightness test tool according to claim 1, characterized in that: The driving assembly (6) comprises fixed seats (18) arranged on both sides of the clamping, a screw rod (19) is rotatably connected between the fixed seats (18), the first slider (4) and the second slider (5) are matched and connected to the outside of the screw rod (19), and a hand wheel (20) is fixedly connected to the extended end of the screw rod (19).
3. The valve seat pressing air tightness testing tool according to claim 1, characterized in that: The pressing assembly (12) comprises a column (21) vertically fixedly connected to the top of the base (1); an extension plate (22) is fixedly connected to the top of the column (21); one end of the extension plate (22) extends to above the valve seat body (8); a pressing cylinder (23) is fixedly connected to the bottom of the extension plate (22) above the valve seat body (8); and a pressing plate (24) is fixedly connected to the bottom of the output end of the pressing cylinder (23).
4. The valve seat press-fit air tightness test tool according to claim 3, characterized in that: A bonding plate (25) is provided at the bottom of the pressing plate (24), a plurality of damping rods (26) are provided between the top of the bonding plate (25) and the pressing plate (24), and springs (27) are sleeved on the outer sides of the plurality of damping rods (26).
5. The valve seat press-fit air tightness test tool according to claim 1, characterized in that: A sealing ring (28) is sleeved on the outside of the air outlet nozzle (14) in the air outlet (10).
6. The valve seat press-fit air tightness test tool according to claim 1, characterized in that: Adjacent sides of the clamping block (7) are both fixedly connected with an anti-slip pad (29).