An air tightness detection device

Abstract

The utility model relates to a kind of air tightness detection devices.A kind of air tightness detection device includes: rack;Detection table, be located in rack, detection table is equipped with plugging groove, plugging groove is used to block the fourth valve mouth;Plugging assembly, located in rack and respectively located at the periphery of detection table, plugging assembly includes first plugging piece, two groups of second plugging piece and third plugging piece, first plugging piece is used to block the first valve mouth, two groups of second plugging piece are respectively used to block the second valve mouth on the two sides of valve body, third plugging piece is used to block the third valve mouth;Detection piece, it is located in the rack and above detection table, and detection piece is used to block test hole;And marking assembly, movably located in rack, for marking in the marking position of valve body.Gas tightness detection device can automatically block valve body and gas tightness detection, and can mark the qualified product quickly to classify, operation process is simple and efficient and not prone to error.

Description

Technical Field

[0001] This utility model relates to the field of valve body testing technology, and in particular to an airtightness testing device. Background Technology

[0002] With the development of valve body testing technology, techniques for airtightness testing of valve bodies have emerged. A valve is a device in a fluid system used to control the direction, pressure, and flow rate of fluids, and the valve body is a key component of the valve. The airtightness of the valve body directly determines the quality of the product. Airtightness testing of various valve bodies used in automobiles, pipelines, and industry is becoming increasingly important; to ensure valve quality, airtightness testing of the valve body is essential.

[0003] Different products have different valve port positions and numbers. In the existing technology, the air tightness test usually involves manually using a sealing head to seal each port of the valve body in turn, then performing the air tightness test, marking qualified products, and then removing the sealing heads one by one to take out the valve body to complete the test. The test process is too cumbersome, manual sealing is time-consuming and labor-intensive, and the operation is not standardized, which can easily lead to inaccurate test results. Utility Model Content

[0004] Therefore, it is necessary to provide an airtightness testing device to address the problems of cumbersome, inefficient, and error-prone manual operation in valve body airtightness testing.

[0005] An airtightness testing device is used to test the airtightness of a valve body. The valve body has a first valve port at the top, second valve ports on both sides, and a third and fourth valve port at the bottom. A test hole is also provided at the top of the valve body, and a marking position is provided on the side of the valve body. The first, second, third, and fourth valve ports and the test hole of the valve body are all interconnected.

[0006] The airtightness testing device includes a frame, a testing platform, a sealing assembly, a testing component, and a marking assembly. The testing platform is mounted on the frame and has a sealing groove for sealing the fourth valve port. The sealing assembly includes a first sealing component, two sets of second sealing components, and a third sealing component mounted on the frame. The first sealing component, two sets of second sealing components, and the third sealing component are located around the periphery of the testing platform. The first sealing component seals the first valve port, the two sets of second sealing components seal the second valve ports on both sides of the valve body, and the third sealing component seals the third valve port. The testing component is vertically mounted on the frame and located above the testing platform. The testing component seals the test holes. The marking assembly is movably mounted on the frame and is used to mark the marking positions on the valve body.

[0007] With this configuration, the airtightness testing device provided in this application can quickly and accurately complete the airtightness testing of valve bodies with a first valve port on the top, second valve ports on both sides, a third valve port and a fourth valve port on the bottom, a test hole on the top, and a marking position on the side, and the first valve port, second valve port, third valve port, fourth valve port and test hole are all interconnected.

[0008] The testing platform mounted on the frame can hold the valve body, and the sealing groove on the testing platform can seal the fourth valve port of the valve body. The sealing assembly includes a first sealing element, two sets of second sealing elements, and a third sealing element, which are arranged on the frame around the valve port of the valve body. The first sealing element can automatically seal the first valve port, the two sets of second sealing elements can automatically seal the second valve ports on both sides of the valve body, and the third sealing element can automatically seal the third valve port. Using mechanical components to automatically seal reduces manual intervention, improves testing efficiency, and reduces the risk of errors.

[0009] The testing component is located above the testing platform, ensuring its position corresponds to the position of the test hole. The testing component can be raised and lowered on the frame, allowing it to seal the test hole during airtightness testing and move away from the valve body after testing for easy removal. The marking component is movably mounted on the frame, allowing its position to correspond to the marking position on the valve body. For products that pass the test, the marking component can mark the valve body as qualified, facilitating valve body classification and improving the efficiency of the entire testing process.

[0010] In one embodiment, a position sensor mounted on the frame is also included for detecting the position of the valve body.

[0011] With this setup, the position sensor mounted on the rack can detect the position of the valve body. When the valve body is not accurately placed on the testing platform, the sensor can transmit a signal indicating that the valve body is not accurately placed, thereby avoiding the need to perform airtightness testing on valve bodies that are not correctly placed on the testing platform, and improving the safety of the testing process.

[0012] In one embodiment, the testing platform is provided with multiple positioning blocks, which are spaced apart to support and fix the valve body.

[0013] With this setup, the multiple positioning blocks on the testing platform are spaced apart, which can position the valve body at different locations and ensure that the valve body placed on the testing platform is stably supported.

[0014] In one embodiment, the blocking assembly includes a first drive device, two sets of second drive devices, and a third drive device, all mounted on a frame. The first blocking member is movably connected to the first drive device, the two sets of second blocking members are movably connected to the two sets of second drive devices respectively, and the third blocking member is movably connected to the third drive device.

[0015] With this configuration, the sealing assembly includes a first drive unit, two sets of second drive units, and a third drive unit, all mounted on the frame. The first sealing element is movably connected to the first drive unit, enabling it to automatically seal the first valve port via the first drive unit. The two sets of second sealing elements are movably connected to the two sets of second drive units, enabling them to automatically seal the second valve port via the second drive units. The third sealing element is movably connected to the third drive unit, enabling it to automatically seal the third valve port via the third drive unit.

[0016] In one embodiment, the blocking assembly further includes a first elastic element disposed between the first driving device and the first blocking member, between the second driving device and the second blocking member, and between the third driving device and the third blocking member. In other embodiments, the first elastic element may also be arbitrarily disposed between the first driving device and the first blocking member, or between the second driving device and the second blocking member, or between the third driving device and the third blocking member.

[0017] In this configuration, the sealing assembly also includes a first elastic element, which is located between the first driving device and the first sealing element. This first elastic element can prevent damage that may occur when the first sealing element and the first valve port are in rigid contact due to excessive driving force of the first driving device. The first elastic element is located between the second driving device and the second sealing element, which can prevent damage that may occur when the second sealing element and the second valve port are in rigid contact due to excessive driving force of the second driving device. The first elastic element is located between the third driving device and the third sealing element, which can prevent damage that may occur when the third sealing element and the third valve port are in rigid contact due to excessive driving force of the third driving device.

[0018] In one embodiment, the device further includes an air valve and a fourth drive device, which are fixedly mounted on the frame at a distance. The fourth drive device is located above the testing table, and the test piece is movably connected to the fourth drive device. The test piece and the air valve are connected in communication.

[0019] This setup also includes an air valve and a fourth drive device. The air valve and the fourth drive device are fixedly mounted on the frame at intervals. The fourth drive device is located above the test platform, so that the position of the fourth drive device corresponds to the position of the test platform. The test piece is movably connected to the fourth drive device, so that the test piece can automatically seal the test hole through the fourth drive device. The test piece is connected to the air valve, so that the air valve can inject gas into the test piece, thereby performing airtightness testing on the valve body through the test piece.

[0020] In one embodiment, the airtightness detection device further includes a second elastic element disposed between the detection element and the fourth drive device.

[0021] With this configuration, the second elastic element is placed between the detection element and the fourth driving device, which can prevent damage that may occur when the detection element and the test hole come into rigid contact due to excessive driving force from the fourth driving device.

[0022] In one embodiment, the detection element is provided with an air inlet and an air outlet, the interiors of the air inlet and the air outlet are interconnected, the air inlet is connected to an air valve, and the position of the air outlet corresponds to the position of the test hole.

[0023] With this configuration, the testing component has an air inlet and an air outlet, which are internally connected. The air inlet is connected to the air valve, allowing the air valve to introduce gas into the testing component. The position of the air outlet corresponds to the position of the test hole, so that when the testing component and the test hole are in contact, the air valve can introduce gas into the valve body through the testing component, thereby performing airtightness testing.

[0024] In one embodiment, a sealing ring is also included, which is used to install on the test hole and seal when the outlet and the test hole come into contact.

[0025] With this configuration, the sealing ring is installed in the test hole and seals when the outlet and the test hole come into contact, allowing the gas inside the test piece to flow completely into the test hole through the outlet. At the same time, it prevents gas leakage between the test piece and the test hole during the valve body airtightness test, ensuring the accuracy of the test results.

[0026] In one embodiment, a sealing gasket is also included, which is partially embedded in the sealing groove and partially used to seal the fourth valve port.

[0027] With this configuration, the sealing gasket is partially embedded in the sealing groove and partially used to seal the fourth valve port. This allows the sealing groove, combined with the corresponding sealing gasket, to adapt to sealing fourth valve ports of different shapes. At the same time, it avoids the possibility of gas leakage at the fourth valve port during the valve body airtightness test, ensuring the accuracy of the test results. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the valve body being tested by the airtightness testing device according to an embodiment of this application;

[0029] Figure 2 for Figure 1 A schematic diagram of the valve body being tested by the airtightness testing device from a rear-view perspective;

[0030] Figure 3 for Figure 1 A schematic diagram of the valve body being tested by the airtightness testing device from a bottom-view perspective;

[0031] Figure 4 This is a schematic diagram of the structure of an airtightness testing device according to an embodiment of this application;

[0032] Figure 5 for Figure 4 The airtightness testing device is installed Figure 1 A partial structural diagram of the valve body in the middle;

[0033] Figure 6 for Figure 4 A partial structural schematic diagram of the airtightness testing device from a rear-view perspective;

[0034] Figure 7 for Figure 4 A partial structural diagram of the airtightness testing device, including the testing component.

[0035] Figure label:

[0036] 10. Valve body; 11. First valve port; 12. Second valve port; 13. Third valve port; 14. Fourth valve port; 15. Test hole; 16. Marker position; 2. Frame; 21. Sensor; 3. Detection table; 31. Sealing groove; 32. Positioning block; 4. Sealing assembly; 41. First sealing element; 42. Second sealing element; 43. Third sealing element; 44. First driving device; 45. Second driving device; 46. Third driving device; 47. First elastic element; 5. Detection element; 51. Air inlet; 52. Air outlet; 6. Marker assembly; 7. Air valve; 8. Fourth driving device; 9. Second elastic element; 100. Sealing ring; 200. Sealing gasket. Detailed Implementation

[0037] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0038] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0040] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0042] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0043] See Figure 4 , Figure 4A schematic diagram of an airtightness testing device according to an embodiment of the present invention is shown. The embodiment provides an airtightness testing device for testing the airtightness of a valve body 10. The valve body 10 has a first valve port 11 at the top, second valve ports 12 on both sides, and a third valve port 13 and a fourth valve port 14 at the bottom. The top of the valve body 10 is also provided with a test hole 15, and the side of the valve body 10 is provided with a marking position 16. The first valve port 11, second valve port 12, third valve port 13, fourth valve port 14 and test hole 15 of the valve body 10 are all interconnected.

[0044] The airtightness testing device includes a frame 2, a testing platform 3, a sealing assembly 4, a testing element 5, and a marking assembly 6. The testing platform 3 is mounted on the frame 2 and has a sealing groove 31 for sealing the fourth valve port 14. The sealing assembly 4 includes a first sealing element 41, two sets of second sealing elements 42, and a third sealing element 43 mounted on the frame 2. The first sealing element 41, the two sets of second sealing elements 42, and the third sealing element 43 are located around the periphery of the testing platform 3. The first sealing element 41 is used to seal the first valve port 11, the two sets of second sealing elements 42 are used to seal the second valve ports 12 on both sides of the valve body 10, and the third sealing element 43 is used to seal the third valve port 13. The testing element 5 is vertically mounted on the frame 2 and located above the testing platform 3. The testing element 5 is used to seal the test hole 15. The marking assembly 6 is movably mounted on the frame 2 and is used to mark the marking position 16 on the valve body 10.

[0045] For details, please refer to Figure 1 , Figure 2 and Figure 3 As shown, in one embodiment of this application, the valve body 10 has a first valve port 11 at the top, second valve ports 12 on both sides, and a third valve port 13 and a fourth valve port 14 at the bottom. A test hole 15 is also provided at the top of the valve body 10. The first valve port 11, second valve port 12, third valve port 13, fourth valve port 14, and test hole 15 are all interconnected. Therefore, after the first valve port 11, second valve port 12, third valve port 13, and fourth valve port 14 are all blocked, the airtightness of the entire valve body 10 can be tested through the test hole 15. A marking position 16 is also provided on the rear side of the valve body 10 for positioning with the marking component 6, so that the marking component 6 can mark the valve body at the designated marking position 16. Similarly, in other embodiments, the marking position 16 on the valve body 10 can also be set on other parts such as the front, left, and right sides of the valve body 10. The specific adjustment method can refer to the above-described arrangement of the marking position 16, and will not be described in detail here.

[0046] For details, please refer to Figure 4 and Figure 5As shown, in an airtightness testing device of this embodiment, a testing platform 3 on the frame 2 is used to place the valve body 10. The bottom surface of the valve body 10 with a fourth valve port 14 is placed on the testing platform 3. The opening of the fourth valve port 14 can be completely blocked by the sealing groove 31, thereby ensuring the sealing effect of the fourth valve port 14. The first sealing element 41 of the sealing assembly 4 is arranged on the frame 2 along the opening direction of the first valve port 11 of the valve body 10. The first sealing element 41 can automatically completely seal the first valve port 11 of the valve body 10. Two sets of second sealing elements 42 are located on the left and right sides of the valve body 10, respectively, and are set on the frame 2. The second sealing element 42 on the left side can automatically completely seal the second valve port 12 on the left side of the valve body 10, and the second sealing element 42 on the right side can automatically completely seal the second valve port 12 on the right side of the valve body 10. The third sealing element 43 is arranged on the frame 2 along the opening direction of the third valve port 13 of the valve body 10. The third sealing element 43 can automatically completely seal the third valve port 13 of the valve body 10. The automatic sealing process is convenient and quick.

[0047] Specifically, the test piece 5 is located above the test table 3 and is mounted on the frame 2 in a height-adjustable manner. The direction in which the test piece 5 can be raised and lowered is the same as the opening direction of the test hole 15, so that when the air tightness of the valve body 10 is tested, the test piece 5 can automatically descend to contact the test hole 15, thereby sealing the test hole 15. This facilitates the air tightness test of the valve body 10 after sealing. At the same time, after the test is completed, it can be moved away from the valve body 10, making it easy to quickly remove the tested valve body 10, thereby improving the efficiency of the entire testing process.

[0048] Specifically, the marking component 6 is movably mounted on the frame 2 and located on the rear side of the valve body 10, so that the marking component 6 can correspond to the marking position 16 on the valve body 10. For products that pass the inspection, the marking component 6 can automatically mark the qualified products at the marking position 16 on the valve body 10, thereby facilitating the rapid classification of qualified valve bodies 10.

[0049] Similarly, in other embodiments, the marking component 6 may not be located on the rear side of the valve body 10, but may be located on the front, left, or right side, or other places, as long as the position of the marking component 6 corresponds to the position of the marking position 16. The specific adjustment method can refer to the arrangement of the marking component 6 described above, and will not be repeated here.

[0050] In this embodiment, the frame 2 includes a position sensor 21, which is mounted on the frame 2 and used to detect the position of the valve body 10. For details, please refer to... Figure 4 and Figure 5As shown, the position sensor 21 is located on the rear side of the valve body 10 and is mounted on the frame 2. It can detect the position of the valve body 10. When the valve body 10 is not accurately placed on the test platform 3, the sensor 21 can transmit a signal that the valve body 10 is not accurately placed, thereby avoiding the airtightness test of the valve body 10 that is not correctly placed on the test platform 3 and reducing the error rate of the test process.

[0051] Similarly, in other embodiments, the position sensor 21 can be set in other places such as the front, left or right side of the valve body 10, as long as it can accurately detect whether the valve body 10 is placed in the correct position. The specific adjustment method can refer to the arrangement of the position sensor 21 described above, and will not be repeated here.

[0052] To further ensure that the valve body 10 can be placed in the accurate position, in this embodiment, the detection table 3 is provided with multiple positioning blocks 32, which are spaced apart to support and fix the valve body 10. For details, please refer to... Figure 4 As shown, the testing platform 3 is provided with five positioning blocks 32 at intervals, which can position the valve body 10 at different positions and ensure that the valve body 10 placed on the testing platform 3 is stably supported.

[0053] Similarly, in other embodiments, the number of positioning blocks 32 can be two, three, or six or more, as long as they can position the valve body 10 and stably support it. The specific adjustment method can refer to the arrangement of the positioning blocks 32 described above, and will not be repeated here.

[0054] In order to enable the sealing assembly 4 to automatically seal the valve body 10, in this embodiment, the sealing assembly 4 includes a first drive device 44, two sets of second drive devices 45 and a third drive device 46, all mounted on the frame 2. The first sealing member 41 is movably connected to the first drive device 44, the two sets of second sealing members 42 are movably connected to the two sets of second drive devices 45 respectively, and the third sealing member 43 is movably connected to the third drive device 46.

[0055] For details, please refer to Figures 1-5As shown, the first sealing member 41 is movably connected to the first driving device 44 along the opening direction of the first valve port 11, so the first sealing member 41 can automatically seal the first valve port 11 through the first driving device 44; the second sealing member 42 on the left side of the valve body 10 is movably connected to the second driving device 45 on the left side of the valve body 10 along the opening direction of the second valve port 12 on the left side of the valve body 10, so the second sealing member 42 on the left side of the valve body 10 can automatically seal the second valve port 12 on the left side of the valve body 10 through the second driving device 45 on the left side of the valve body 10. The second sealing member 42 on the right side of the valve body 10 is movably connected to the second driving device 45 on the right side of the valve body 10 along the opening direction of the second valve port 12 on the right side of the valve body 10. Therefore, the second sealing member 42 on the right side of the valve body 10 can automatically seal the second valve port 12 on the right side of the valve body 10 through the second driving device 45 on the right side of the valve body 10. The third sealing member 43 is movably connected to the third driving device 46 along the opening direction of the third valve port 13. Therefore, the third sealing member 43 can automatically seal the third valve port 13 through the third driving device 46.

[0056] To avoid potential damage from rigid contact during the sealing process, in this embodiment, the sealing assembly includes a first elastic element, which is disposed between the first driving device and the first sealing component, between the second driving device and the second sealing component, and between the third driving device and the third sealing component. Of course, in other embodiments, the first elastic element can be arbitrarily arranged between the first driving device and the first sealing component, or between the second driving device and the second sealing component, or between the third driving device and the third sealing component.

[0057] For details, please refer to Figure 4 and Figure 5 As shown, the first elastic element 47 is disposed between the first driving device 44 and the first sealing element 41, thereby preventing damage that may occur when the first sealing element 41 and the first valve port 11 are in rigid contact due to excessive driving force of the first driving device 44; the first elastic element 47 is also disposed between the second driving device 45 and the second sealing element 42, thereby preventing damage that may occur when the second sealing element 42 and the second valve port 12 are in rigid contact due to excessive driving force of the second driving device 45; the first elastic element 47 is also disposed between the third driving device 46 and the third sealing element 43, thereby preventing damage that may occur when the third sealing element 43 and the third valve port 13 are in rigid contact due to excessive driving force of the third driving device 46.

[0058] In this embodiment, the airtightness testing device also includes an air valve 7 and a fourth driving device 8. The air valve 7 and the fourth driving device 8 are fixedly mounted on the frame 2 at intervals. The fourth driving device 8 is located above the testing table 3. The testing element 5 is movably connected to the fourth driving device 8. The testing element 5 and the air valve 7 are connected.

[0059] For details, please refer to Figure 4 and Figure 6 As shown, the air valve 7 and the fourth drive device 8 are fixedly mounted on the frame 2 at intervals. The air valve 7 is located on the rear side of the valve body 10, and the fourth drive device 8 is located above the test platform 3. Thus, the position of the fourth drive device 8 corresponds to the position of the test platform 3. The test piece 5 can be movably connected to the fourth drive device 8 along the opening direction of the test hole 15. Therefore, the test piece 5 can automatically seal the test hole 15 through the fourth drive device 8. The test piece 5 and the air valve 7 are connected, so that the air valve 7 can inject gas into the test piece 5, thereby detecting the airtightness of the valve body 10.

[0060] Similarly, in other embodiments, the air valve 7 provided on the frame 2 can also be located in other positions such as the front, left or right side of the valve body 10, as long as the air valve 7 can communicate with the detection element 5. The specific arrangement can refer to the arrangement of the air valve 7 described above, and will not be repeated here.

[0061] It is worth mentioning that, for ease of operation, the first drive device 44, the second drive device 45, the third drive device 46 and the fourth drive device 8 can all be connected to the air valve 7 and driven separately through unified control of the air valve 7. The specific settings can be configured according to requirements.

[0062] To further avoid potential damage caused by rigid contact between components during the sealing test, in this embodiment, the airtightness testing device may further include a second elastic element 9, which is disposed between the testing element 5 and the fourth driving device 8. For details, please refer to... Figure 4 and Figure 6 As shown, the second elastic member 9 is disposed between the detection member 5 and the fourth driving device 8, which can prevent the detection member 5 and the test hole 15 from being damaged due to excessive driving force of the fourth driving device 8 when they are in rigid contact.

[0063] In this embodiment, the detection element 5 is provided with an air inlet 51 and an air outlet 52. The interiors of the air inlet 51 and the air outlet 52 are interconnected. The air inlet 51 is connected to the air valve 7. The position of the air outlet 52 corresponds to the position of the test hole 15.

[0064] For details, please refer to Figure 1 , Figure 4 and Figure 7 As shown, the test piece 5 has an air inlet 51 on its side and an air outlet 52 at its bottom. The position of the air outlet 52 corresponds to the position of the test hole 15. The interiors of the air inlet 51 and the air outlet 52 are interconnected. The air inlet 51 is connected to the air valve 7, so that the gas in the air valve 7 can flow into the test hole 15 through the air inlet 51 and the air outlet 52, thereby performing an airtightness test on the valve body 10.

[0065] To ensure the sealing performance of the valve body 10, in this embodiment, the airtightness testing device may also include a sealing ring 100, which is installed in the test hole 15 and seals when the air outlet 52 and the test hole 15 come into contact.

[0066] For details, please refer to Figure 1 , Figure 4 and Figure 7 As shown, the sealing ring 100 is installed in the test hole 15 and completely seals when the outlet 52 and the test hole 15 come into contact, so that the gas in the test piece 5 can flow completely into the test hole 15 through the outlet 52, avoiding the possibility of gas leakage between the test piece 5 and the test hole 15 during the airtightness test of the valve body 10, and ensuring the accuracy of the test results.

[0067] To further ensure the sealing performance of the valve body 10, in this embodiment, the airtightness detection device may also include a sealing gasket 200, which is partially embedded in the sealing groove 31 and partially used to seal the fourth valve port 14.

[0068] For details, please refer to Figure 3 and Figure 4 As shown, the sealing gasket 200 is partially embedded in the sealing groove 31 and partially used to seal the fourth valve port 14, so that the sealing groove 31, in combination with the corresponding sealing gasket 200, can completely seal the fourth valve port 14, thereby avoiding the possibility of gas leakage at the fourth valve port 14 during the airtightness test of the valve body 10 and ensuring the accuracy of the test results.

[0069] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An airtightness testing device for testing the airtightness of a valve body (10), wherein the valve body (10) has a first valve port (11) at the top and second valve ports (12) on both sides, and a third valve port (13) and a fourth valve port (14) at the bottom; a test hole (15) is also provided at the top of the valve body (10); a marking position (16) is provided on the side of the valve body (10); the first valve port (11), second valve port (12), third valve port (13), fourth valve port (14) and test hole (15) of the valve body (10) are all interconnected, characterized in that, include: Rack (2); The testing platform (3) is located on the frame (2). The testing platform (3) is provided with a sealing groove (31), which is used to seal the fourth valve port (14). A sealing assembly (4) is provided on the frame (2) and located around the detection table (3). The sealing assembly (4) includes a first sealing member (41), two sets of second sealing members (42) and a third sealing member (43). The first sealing member (41) is movably arranged relative to the frame (2) to seal the first valve port (11). The two sets of second sealing members (42) are movably arranged relative to the frame (2) to seal the second valve ports (12) on both sides of the valve body (10). The third sealing member (43) is movably arranged relative to the frame (2) to seal the third valve port (13). The testing component (5) is vertically mounted on the frame (2) and located above the testing platform (3). The testing component (5) is used to connect to the test hole (15). A marking component (6), movably disposed on the frame (2), is used for marking the marking position (16) on the valve body (10).

2. The airtightness testing device according to claim 1, characterized in that, It also includes a position sensor (21) mounted on the frame (2) for detecting the position of the valve body (10).

3. The airtightness testing device according to claim 1, characterized in that, The testing platform (3) is provided with multiple positioning blocks (32), and the multiple positioning blocks (32) are spaced apart to support and fix the valve body (10).

4. The airtightness testing device according to claim 1, characterized in that, The blocking assembly (4) includes a first drive device (44), two sets of second drive devices (45) and a third drive device (46) all disposed on the frame (2). The first blocking member (41) is movably connected to the first drive device (44), the two sets of second blocking members (42) are movably connected to the two sets of second drive devices (45) respectively, and the third blocking member (43) is movably connected to the third drive device (46).

5. The airtightness testing device according to claim 4, characterized in that, The sealing assembly (4) further includes a first elastic element (47) disposed between the first driving device (44) and the first sealing element (41); and / or The first elastic element (47) is disposed between the second driving device (45) and the second sealing element (42); and / or The first elastic element (47) is disposed between the third driving device (46) and the third sealing element (43).

6. The airtightness testing device according to claim 1, characterized in that, It also includes an air valve (7) and a fourth drive device (8), the air valve (7) and the fourth drive device (8) being fixedly mounted on the frame (2) at intervals, the fourth drive device (8) being located above the testing table (3), the testing element (5) being movably connected to the fourth drive device (8), and the testing element (5) being connected to the air valve (7).

7. The airtightness testing device according to claim 6, characterized in that, The airtightness testing device further includes a second elastic element (9), which is disposed between the testing element (5) and the fourth driving device (8).

8. The airtightness testing device according to claim 7, characterized in that, The testing component (5) is provided with an air inlet (51) and an air outlet (52). The interiors of the air inlet (51) and the air outlet (52) are interconnected. The air inlet (51) is connected to the air valve (7). The position of the air outlet (52) corresponds to the position of the test hole (15).

9. The airtightness testing device according to claim 8, characterized in that, It also includes a sealing ring (100) for mounting in the test hole (15) to seal when the outlet (52) and the test hole (15) come into contact.

10. The airtightness testing device according to claim 1, characterized in that, It also includes a sealing gasket (200), which is partially embedded in the sealing groove (31) and partially used to seal the fourth valve port (14).

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