A valve air tightness detection device

Abstract

The application relates to the field of valve quality inspection equipment, and particularly discloses a valve air tightness detection equipment, which comprises a water tank, a rotating shaft is arranged in the side wall of the water tank and rotationally connected to the side wall, a motor for driving the rotating shaft to rotate is fixedly connected to the outer wall of the water tank, the rotating shaft is fixedly connected with a fixing table, the fixing table comprises a bottom plate fixedly connected with the rotating shaft, a supporting column fixedly connected to the upper surface of the bottom plate and a top plate connected to the top of the supporting column, the top plate is fixedly connected with a pressing cylinder, the bottom plate is fixedly connected with an inflation mechanism, the supporting column is slidingly connected with a fixing assembly, the fixing assembly comprises a clamping arm slidingly connected with the supporting column and a fixing plate detachably connected with the clamping arm, and a ventilation hole is arranged in the middle of the fixing plate. The valve air tightness detection equipment has the effect that a plurality of valves can be detected at one time.

Description

Technical Field

[0001] This application relates to the field of valve quality inspection equipment, and in particular to a valve airtightness testing device. Background Technology

[0002] Valves are control devices in media conveying systems. They have functions such as shutting off, regulating, guiding, preventing backflow, stabilizing pressure, diverting or overflowing pressure relief. They can be used to control the flow of various types of fluids, such as air, water, steam, various corrosive media, mud, oil, liquid metals and radioactive media.

[0003] To ensure that valves can stably perform operations such as guiding and diverting flow, they must have good airtightness. Currently, valve testing typically involves blocking all ports of the valve except for one air inlet, placing the valve in water, and observing whether bubbles are generated to determine the valve's airtightness.

[0004] Conventional testing methods typically involve manually sealing the valve. However, this process is prone to incomplete sealing, which affects the effectiveness of the valve's airtightness test. Furthermore, manual sealing is inefficient during testing. Utility Model Content

[0005] To improve testing efficiency, this application provides a valve airtightness testing device.

[0006] The valve airtightness testing equipment provided in this application adopts the following technical solution:

[0007] A valve airtightness testing device includes a water tank, a rotating shaft passing through and rotatably connected to the side wall of the water tank, a motor for driving the rotating shaft to rotate fixedly connected to the outer wall of the water tank, a fixed platform fixedly connected to the rotating shaft, the fixed platform including a base plate fixedly connected to the rotating shaft, a support column fixedly connected to the upper surface of the base plate, and a top plate connected to the top of the support column, a pressing cylinder fixedly connected to the top plate, an inflation mechanism fixedly connected to the base plate, a fixing assembly slidably connected to the support column, the fixing assembly including a clamping arm slidably connected to the support column and a fixing plate detachably connected to the clamping arm, and a vent hole opened in the middle of the fixing plate.

[0008] By adopting the above technical solution, when conducting airtightness testing, the valve is placed on the base plate, and then the fixing plate is placed on top of the valve. At this time, another valve can be stacked on top, and the valve is fixed by the clamping cylinder. Then, the inflation mechanism is activated to vent air into the valve. The vent hole in the middle of the fixing plate allows the gas to enter both valves at the same time. The rotating shaft drives the fixing platform to rotate, so that both valves are completely submerged in water. The airtightness of the valve is judged by observing whether water bubbles are generated in the water tank.

[0009] Optionally, the clamping arm includes a lifting arm, a telescopic arm slidably connected to the lifting arm, and a fixing ring fixedly connected to the end of the telescopic arm away from the lifting arm. The lifting arm has a telescopic groove for the telescopic arm to be inserted, and the side wall of the lifting arm has a fixing hole. A fastener for abutting the telescopic arm is threaded into the fixing hole.

[0010] By adopting the above technical solution, the clamping arm can be adjusted in position according to different valve sizes, and airtightness testing of valves of different sizes can be achieved by replacing the fixing plate of different sizes.

[0011] Optionally, the fixing plate is connected to the opposite sides of the fixing plate, and the fixing rings on both sides are provided with a snap-fit ​​groove for the snap-fit ​​plate to be inserted.

[0012] By adopting the above technical solution, the fixing plate can be quickly disassembled and installed, thus facilitating the replacement of fixing plates of different sizes to achieve compatibility.

[0013] Optionally, the fixing ring includes a connecting part fixedly connected to the telescopic arm, a first abutting part disposed on the top wall of the connecting part, and a second abutting part disposed on the bottom wall of the connecting part, and the snap-fit ​​groove is formed in the connecting part.

[0014] By adopting the above technical solution, the first abutting part and the second abutting part can abut against the valves above and below the fixing plate respectively, thereby ensuring that the valves above and below can be aligned and preventing the valves from sliding out due to misalignment during pressing.

[0015] Optionally, the support column has a lifting hole for the lifting arm to pass through, and a positioning block is connected to one end of the lifting arm near the support column. The positioning block has a limiting groove for the side wall of the stroke hole to pass through, and the inner wall of the limiting groove is in contact with the two side walls of the support column.

[0016] By adopting the above technical solution, the inner wall of the limiting groove can abut against both sides of the support column, thereby ensuring that the lifting arm always remains horizontal, preventing the lifting arm from tipping over, and allowing the lifting arm to be adjusted only in height.

[0017] Optionally, the inflation mechanism includes an inflation platform fixedly connected to the upper surface of the base plate and an inflation protrusion fixedly connected to the top of the inflation platform.

[0018] By adopting the above technical solution, the inflation protrusion can be inserted into the valve, thereby ensuring the air intake effect.

[0019] Optionally, a sealing ring is connected to the top of the inflation platform.

[0020] By adopting the above technical solution, the sealing ring can ensure that gas will not leak from the air inlet when the valve is purged, thereby ensuring the accuracy of the airtightness test.

[0021] Optionally, guide portions are connected to the axial center of both the top and bottom walls of the fixed plate, and the vent holes are inserted through the guide portions.

[0022] By adopting the above technical solution, when the valves are stacked, the guide part can realize the positioning between the valves, thereby ensuring that the upper and lower valves can be aligned, thus ensuring that the vent can transmit gas normally.

[0023] In summary, this application has the following beneficial effects:

[0024] 1. By setting up a fixing component and a clamping cylinder, valves can be stacked in the vertical direction, enabling simultaneous airtightness testing of multiple valves and improving testing efficiency.

[0025] 2. By setting a sealing ring and an inflatable protrusion, the sealing effect of the airtightness test is ensured, and the accuracy of the test is improved. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the valve airtightness testing device according to an embodiment of this application;

[0027] Figure 2 This is an exploded view of the fixing component according to an embodiment of this application;

[0028] Figure 3 This is a schematic diagram of the structure of the fixing plate according to an embodiment of this application;

[0029] Figure 4 This is a schematic diagram of the inflation mechanism according to an embodiment of this application.

[0030] Explanation of reference numerals in the attached drawings: 1. Water tank; 2. Rotating shaft; 3. Motor; 4. Fixing platform; 41. Base plate; 42. Support column; 421. Lifting hole; 43. Top plate; 44. Pressing cylinder; 5. Inflation mechanism; 51. Inflation platform; 511. Sealing ring; 52. Inflation protrusion; 6. Fixing component; 61. Clamping arm; 611. Lifting arm; 6111. Telescopic groove; 6112. Fixing hole; 612. Telescopic arm; 613. Fixing ring; 6131. ​​Snap-fit ​​groove; 6132. Connecting part; 6133. First abutment part; 6134. Second abutment part; 614. Fastener; 615. Positioning block; 6151. Limiting groove; 62. Fixing plate; 621. Vent hole; 622. Snap-fit ​​plate; 623. Guide part. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0032] This application discloses a valve airtightness testing device. (Refer to...) Figure 1The valve airtightness testing equipment includes a water tank 1, a rotating shaft 2 that passes through and is rotatably connected to the side wall of the water tank 1, and a motor 3 that is fixedly connected to the outer wall of the water tank 1 for driving the rotating shaft 2 to rotate. The rotating shaft 2 is fixedly connected to a fixed platform 4 for placing the valve. The fixed platform 4 includes a base plate 41 fixedly connected to the rotating shaft 2, support columns 42 fixedly connected to both ends of the upper surface of the base plate 41, and a top plate 43 connected to the top of the support columns 42. A clamping cylinder 44 is connected to the top of the top plate 43, and the output shaft of the clamping cylinder 44 passes through the top plate 43. An inflation mechanism 5 is fixedly connected to the base plate 41. When testing the airtightness of the valve, place the valve on the upper surface of the base plate 41. Start the clamping cylinder 44 so that the output shaft of the clamping cylinder 44 abuts against the valve, thereby fixing the valve on the fixed platform 4. At this time, the rotating shaft 2 rotates, turning the fixed platform 4 towards the side closer to the bottom wall of the water tank 1, so that the valve is submerged in water. Start the inflation mechanism 5 to inflate the valve. If air bubbles are seen in the water tank 1, it indicates that the airtightness of the valve is poor; otherwise, the airtightness is good.

[0033] Reference Figure 1 , Figure 2 Both sides of the support column 42 are connected to a fixing assembly 6. The fixing assembly 6 includes clamping arms 61 that are slidably connected to the two side support columns 42 and a fixing plate 62 that is detachably connected between the two side clamping arms 61. Guide portions 623 are connected to the axial center of the top and bottom walls of the fixing plate 62. The guide portions 623 have vent holes 621 along the axial direction. The fixing assembly 6 allows the valves to be stacked vertically. First, a valve is placed on the bottom plate 41, and then the fixing plate 62 is stacked on top of the valve. Then, another valve can be placed on the fixing plate 62. With the help of the clamping cylinder 44, multiple valves can be fixed, thereby realizing the function of simultaneously testing the air tightness of multiple valves. The vent hole 621 in the middle of the fixing plate 62 allows gas to enter the valve above through the vent hole 621 during inflation, thereby ensuring that the interior of multiple valves is filled with gas. The guide portion 623 allows the air inlet to penetrate deep into the valve, thereby preventing gas leakage.

[0034] Reference Figure 1 , Figure 2The clamping arm 61 includes a lifting arm 611, a telescopic arm 612 slidably connected to the lifting arm 611, and a fixing ring 613 fixedly connected to the end of the telescopic arm 612 away from the lifting arm 611. The fixing ring 613 is arc-shaped. The arc-shaped fixing ring 613 can adapt to valves of different sizes, and both fixing rings 613 can stably fit against the side wall of the valve, thereby achieving effective fixation. The lifting arm 611 has a telescopic groove 6111 for the telescopic arm 612 to be inserted, and the lifting arm 611 has a fixing hole 6112, with a fastener 614 threaded into the fixing hole 6112. The telescopic arm 612 moves within the telescopic groove 6111 to adjust the distance between the two fixing rings 613 to adapt to valves of different sizes. After the fastener 614 passes through the fixing hole 6112, one end of it can abut against the telescopic arm 612, and the position of the telescopic arm 612 is fixed by friction. In this embodiment, the fastener 614 is a bolt. When fixing, a washer is provided between the head of the bolt and the outer wall of the lifting arm 611 to prevent the fastener 614 from loosening.

[0035] Reference Figure 1 , Figure 2 The support column 42 has a lifting hole 421 for the lifting arm 611 to move. A positioning block 615 is connected to one end of the lifting arm 611 near the support column 42. The positioning block 615 has a limit groove 6151, and the inner wall of the limit groove 6151 abuts against the outer wall of the support column 42. This ensures that the lifting arm 611 remains horizontal and does not tilt during movement.

[0036] Reference Figure 2 , Figure 3 The fixing plate 62 has snap-fit ​​plates 622 connected to its opposite sides. The two fixing rings 613 on opposite sides have snap-fit ​​grooves 6131 for the snap-fit ​​plates 622 to insert into. The snap-fit ​​plates 622 are inserted into the snap-fit ​​grooves 6131, thus achieving a detachable connection of the fixing plate 62. This allows for the replacement of fixing plates 62 of different sizes to accommodate valves of different sizes. The fixing ring 613 includes a connecting part 6132 fixedly connected to the telescopic arm 612, a first abutting part 6133 disposed on the top wall of the connecting part 6132, and a second abutting part 6134 disposed on the bottom wall of the connecting part 6132. The snap-fit ​​grooves 6131 are formed on the inner wall of the connecting part 6132. The first abutting part 6133 and the second abutting part 6134 can respectively abut against the valves on the upper and lower sides, thereby ensuring that the valves are stably fixed and will not move horizontally.

[0037] Reference Figure 2 , Figure 3Guide portions 623 are connected to the axial center of both the top and bottom walls of the fixing plate 62, and vent holes 621 pass through the guide portions 623. When the valves are stacked and inflated, the guide portions 623 can be inserted into the inner cavity of the valves to ensure the inflation effect, and the inflation portion can also play a positioning role to ensure that the upper and lower valves are aligned.

[0038] Reference Figure 4 The inflation mechanism 5 includes an inflation platform 51 fixedly connected to the upper surface of the base plate 41 and an inflation protrusion 52 fixedly connected to the top of the inflation platform 51. The upper surface of the inflation platform 51 is covered with a sealing ring 511, which is made of silicone. During inflation, the inflation protrusion 52 can enter the valve to ensure air intake, while the sealing ring 511 can abut against the outer wall of the valve to prevent gas leakage.

[0039] The implementation principle of the valve airtightness testing device in this application embodiment is as follows: When performing airtightness testing, the valve is placed on the inflation platform 51, the clamping arm 61 is moved to the top of the valve, and then the fixing plate 62 is inserted so that the fixing plate 62 fits against the valve. Finally, a valve is stacked on top of the fixing plate 62, the clamping cylinder 44 is activated to fix the valve, the rotating shaft 2 drives the fixing platform 4 to rotate, and the valve enters the water tank 1 and is submerged in water. The airtightness of the valve is judged by observing whether water bubbles are generated in the water tank 1.

[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A valve airtightness testing device, comprising a water tank (1), characterized in that: A rotating shaft (2) is rotatably connected through the side wall of the water tank (1). A motor (3) for driving the rotating shaft (2) to rotate is fixedly connected to the outer wall of the water tank (1). A fixed platform (4) is fixedly connected to the rotating shaft (2). The fixed platform (4) includes a base plate (41) fixedly connected to the rotating shaft (2), a support column (42) fixedly connected to the upper surface of the base plate (41), and a top plate (43) connected to the top of the support column (42). A pressing cylinder (44) is fixedly connected to the top plate (43). An inflation mechanism (5) is fixedly connected to the base plate (41). A fixing component (6) is slidably connected to the support column (42). The fixing component (6) includes a clamping arm (61) slidably connected to the support column (42) and a fixing plate (62) detachably connected to the clamping arm (61). A vent hole (621) is opened in the middle of the fixing plate (62).

2. The valve airtightness testing equipment according to claim 1, characterized in that: The clamping arm (61) includes a lifting arm (611), a telescopic arm (612) slidably connected to the lifting arm (611), and a fixing ring (613) fixedly connected to one end of the telescopic arm (612) away from the lifting arm (611). The lifting arm (611) has a telescopic groove (6111) for the telescopic arm (612) to be inserted. The side wall of the lifting arm (611) has a fixing hole (6112). The fixing hole (6112) is threaded with a fastener (614) for abutting against the telescopic arm (612).

3. The valve airtightness testing equipment according to claim 2, characterized in that: The fixing plate (62) is connected to the two opposite sides by a snap-fit ​​plate (622), and the two sides of the fixing ring (613) have a snap-fit ​​groove (6131) for the snap-fit ​​plate (622) to be inserted into.

4. The valve airtightness testing equipment according to claim 3, characterized in that: The fixing ring (613) includes a connecting part (6132) fixedly connected to the telescopic arm (612), a first abutting part (6133) disposed on the top wall of the connecting part (6132), and a second abutting part (6134) disposed on the bottom wall of the connecting part (6132). The snap-fit ​​groove (6131) is formed in the connecting part (6132).

5. The valve airtightness testing equipment according to claim 2, characterized in that: The support column (42) has a lifting hole (421) through which the lifting arm (611) passes. The lifting arm (611) is connected to a positioning block (615) at one end near the support column (42). The positioning block (615) has a limiting groove (6151) through which the side wall of the stroke hole passes. The inner wall of the limiting groove (6151) is in contact with the two side walls of the support column (42).

6. The valve airtightness testing equipment according to claim 1, characterized in that: The inflation mechanism (5) includes an inflation platform (51) fixedly connected to the upper surface of the base plate (41) and an inflation protrusion (52) fixedly connected to the top of the inflation platform (51).

7. The valve airtightness testing equipment according to claim 6, characterized in that: A sealing ring (511) is connected to the top of the inflation platform (51).

8. The valve airtightness testing equipment according to claim 1, characterized in that: The top and bottom walls of the fixed plate (62) are both connected to guide parts (623), and the vent (621) passes through the guide parts (623).

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