An air tightness detection device

Abstract

This utility model discloses an airtightness testing device, including a base plate. A low-pressure testing component is fixedly mounted on one side of the top of the base plate, a rotating component is rotatably mounted in the middle of the top of the base plate, a clamping component is fixedly mounted on the top of the rotating component, and a high-pressure testing component is mounted on the other side of the top of the base plate. The low-pressure and high-pressure testing components are symmetrically distributed on the top of the base plate. This airtightness testing device, by using the low-pressure and high-pressure testing components in conjunction with the rotating component, can quickly perform airtightness tests on workpieces under both high and low pressure modes in a short time, greatly improving testing efficiency. The clamping component, using a clamping cylinder to drive two clamping blocks to hold the workpiece under test, improves testing stability. Furthermore, the distance between the two clamping blocks can be finely adjusted according to the cross-sectional dimensions of the workpiece, improving practicality.

Description

Technical Field

[0001] This utility model relates to the field of airtightness testing, and more particularly to an airtightness testing device. Background Technology

[0002] Air tightness testing devices are critical equipment used to assess the sealing integrity of workpieces or packaging, and are widely used in industries such as automotive, medical devices, consumer electronics, and precision packaging. Their core principle involves filling the workpiece under test with a medium (such as gas) at a certain pressure and monitoring changes in this pressure or leakage flow rate to accurately determine the presence and magnitude of leaks. Compared to traditional visual leak detection methods involving immersion in water, modern air tightness testing offers a series of advantages, including high automation, excellent testing accuracy, non-destructive testing, outstanding efficiency, and strong data traceability, making it an indispensable part of ensuring product quality and improving production automation levels.

[0003] However, most existing general-purpose airtightness testing devices have a significant limitation: First, in practical applications, to achieve both high and low pressure testing, it is often necessary to configure two independent testing systems or perform cumbersome parameter resets and switching on the same system. This not only significantly increases equipment costs and floor space but also greatly reduces testing efficiency, making it impossible to achieve efficient and integrated multi-seal performance verification. Second, when performing airtightness testing on workpieces, it is difficult to meet the clamping and testing requirements of workpieces of different sizes. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this invention is to provide an airtightness testing device.

[0005] The following technical solution is adopted: an airtightness testing device includes a base plate, a low-pressure testing component is fixedly provided on one side of the top of the base plate, a rotating component is rotatably provided in the middle of the top of the base plate, a clamping component is fixedly provided at the top of the rotating component, a high-pressure testing component is provided on the other side of the top of the base plate, the low-pressure testing component and the high-pressure testing component are symmetrically distributed on the top of the base plate, and an annular groove is opened on the top of the base plate.

[0006] Optionally, the low-pressure detection component includes a first slide groove, which is fixed to the top of the base plate. A first slider is slidably connected to the inner wall of the first slide groove. A first cylinder is fixedly provided at the top of the first slider, and a first fixing sleeve is fixedly connected to the driving end of the first cylinder.

[0007] Optionally, a low-pressure air pump is fixedly installed on the inner wall of the first fixed sleeve. One end of the low-pressure air pump is connected to a first pressure regulating valve. A first pressure sensor is connected to one side of the first pressure regulating valve. A first solenoid valve is connected to one side of the first pressure sensor. A first interface is connected to one side of the first solenoid valve.

[0008] Optionally, the high-voltage detection component includes a second slide groove, which is fixed to the top of the base plate. A second slider is slidably connected to the inner wall of the second slide groove. A second cylinder is fixedly provided at the top of the second slider, and a second fixing sleeve is fixedly connected to the driving end of the second cylinder.

[0009] Optionally, a high-pressure air pump is fixedly installed on the inner wall of the second fixed sleeve. One end of the high-pressure air pump is connected to a second pressure regulating valve. A second pressure sensor is connected to one side of the second pressure regulating valve. A second solenoid valve is connected to one side of the second pressure sensor. A second interface is connected to one side of the second solenoid valve.

[0010] Optionally, the clamping assembly includes a rotating bracket, with two tail brackets symmetrically fixed on both sides of the top of the rotating bracket, and four cylinder bases, clamping cylinders and clamping blocks symmetrically fixed on both sides of the top of the rotating bracket. The cylinder bases are fixed to the top of the rotating bracket by bolts, the clamping cylinders are fixedly mounted on the top of the cylinder bases, and the clamping blocks are fixedly connected to the drive end of the clamping cylinders.

[0011] Optionally, the rotating assembly includes two annular sliders, which are slidably connected to the inner wall of an annular groove. A support rod is fixedly connected to the top of each annular slider, and a support groove is fixedly connected to the top of each support rod. Several sliding rods are fixedly connected between the inner walls of the support grooves. An adjusting slider is slidably connected to each of the sliding rods. The adjusting slider is slidably connected to the inner wall of the support groove. Several return springs are fixedly connected between the two sides of the adjusting slider and the two sides of the inner wall of the support groove. Each return spring is sleeved on the outer wall of one of the sliding rods. The adjusting slider is fixedly connected to the bottom of the rotating bracket.

[0012] Optionally, a rotary cylinder is fixedly provided at the bottom end of the support groove, and the rotary cylinder is rotatably connected to the top end of the base plate.

[0013] The technical effects that can be achieved by the technical means of this utility model are as follows: In this invention, by setting up a low-pressure detection component and a high-pressure detection component, and using a rotating component, the airtightness of the workpiece can be quickly tested in both high-pressure and low-pressure modes in a short time, which greatly improves the detection efficiency.

[0014] In this utility model, by setting up a clamping assembly, the clamping cylinder drives two clamping blocks to clamp the workpiece to be tested, which improves the stability of the test. By setting up clamping blocks, the distance between the two clamping blocks can be finely adjusted according to the cross-sectional size of the workpiece, which improves the practicality. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the low-voltage detection component and the high-voltage detection component of this utility model; Figure 3 This is a three-dimensional structural diagram of the clamping component of this utility model; Figure 4 This is a three-dimensional structural diagram of the rotating component of this utility model.

[0016] In the diagram: 1. Base plate; 2. Low-pressure detection component; 201. First slide groove; 202. First slider; 203. First cylinder; 204. Low-pressure air pump; 205. First fixing sleeve; 206. First pressure regulating valve; 207. First pressure sensor; 208. First solenoid valve; 209. First interface; 3. Clamping component; 301. Rotating bracket; 302. Tail support frame; 303. Cylinder base; 304. Clamping cylinder; 305. Clamping block; 4. Rotating component 401. Annular slider; 402. Support groove; 403. Slide rod; 404. Return spring; 405. Adjusting slider; 406. Support rod; 407. Rotary cylinder; 5. High-pressure detection assembly; 501. Second slide groove; 502. Second slider; 503. Second cylinder; 504. High-pressure air pump; 505. Second fixing sleeve; 506. Second pressure regulating valve; 507. Second pressure sensor; 508. Second solenoid valve; 509. Second interface; 6. Annular groove. Detailed Implementation

[0017] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0018] In the description of this utility model, it should be noted that the orientations or positional relationships indicated by terms such as "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end" are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not 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. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] A preferred embodiment of the airtightness detection device provided by this utility model is, for example... Figures 1 to 4 As shown: An airtightness testing device includes a base plate 1, a low-pressure testing component 2 fixedly disposed on one side of the top of the base plate 1, a rotating component 4 rotatably disposed in the middle of the top of the base plate 1, a clamping component 3 fixedly disposed on the top of the rotating component 4, a high-pressure testing component 5 disposed on the other side of the top of the base plate 1, the low-pressure testing component 2 and the high-pressure testing component 5 are symmetrically distributed on the top of the base plate 1, and an annular groove 6 is formed on the top of the base plate 1.

[0021] In this embodiment, the low-pressure detection component 2 includes a first slide groove 201, which is fixed to the top of the base plate 1. A first slider 202 is slidably connected to the inner wall of the first slide groove 201. A first cylinder 203 is fixedly provided at the top of the first slider 202. A first fixing sleeve 205 is fixedly connected to the driving end of the first cylinder 203.

[0022] By pushing the first slider 202 to slide on the inner wall of the first slide groove 201, the distance between the first interface 209 and the workpiece held by the clamping assembly 3 is controlled. The first cylinder 203 drives the first fixed sleeve 205 to move up and down, so as to adjust the height of the first interface 209 and make it consistent with the height of the test port of workpieces of different sizes.

[0023] In this embodiment, a low-pressure air pump 204 is fixedly mounted on the inner wall of the first fixed sleeve 205. One end of the low-pressure air pump 204 is connected to a first pressure regulating valve 206. One side of the first pressure regulating valve 206 is connected to a first pressure sensor 207. One side of the first pressure sensor 207 is connected to a first solenoid valve 208. One side of the first solenoid valve 208 is connected to a first interface 209.

[0024] The above scheme involves setting a low and stable test pressure by using a first pressure regulating valve 206, and then using a first solenoid valve 208 to connect the first pressure regulating valve 206 to the workpiece test port. The first pressure sensor 207 monitors and feeds back the actual pressure value of the low-pressure circuit in real time to ensure accuracy.

[0025] In this embodiment, the high-voltage detection component 5 includes a second slide groove 501, which is fixed to the top of the base plate 1. A second slider 502 is slidably connected to the inner wall of the second slide groove 501. A second cylinder 503 is fixedly provided at the top of the second slider 502, and a second fixing sleeve 505 is fixedly connected to the driving end of the second cylinder 503.

[0026] The above scheme allows the second slider 502 to slide along the inner wall of the second groove 501, controlling the distance between the second interface 509 and the workpiece held by the clamping assembly 3. The second cylinder 503 drives the second fixed sleeve 505 to move up and down, facilitating the adjustment of the height of the second interface 509 to keep it consistent with the height of the test port of workpieces of different sizes.

[0027] In this embodiment, a high-pressure air pump 504 is fixedly mounted on the inner wall of the second fixed sleeve 505. One end of the high-pressure air pump 504 is connected to a second pressure regulating valve 506. One side of the second pressure regulating valve 506 is connected to a second pressure sensor 507. One side of the second pressure sensor 507 is connected to a second solenoid valve 508. One side of the second solenoid valve 508 is connected to a second interface 509.

[0028] The above scheme involves setting a second pressure regulating valve 506 to set and maintain a high and stable test pressure, then opening the second solenoid valve 508 to connect the second interface 509 to the workpiece test port, and the second pressure sensor 507 to monitor and feedback the actual pressure value of the low-pressure circuit in real time to ensure accuracy.

[0029] In this embodiment, the clamping assembly 3 includes a rotating bracket 301. Two tail brackets 302 are symmetrically fixed on both sides of the top of the rotating bracket 301. Four cylinder bases 303, clamping cylinders 304 and clamping blocks 305 are symmetrically fixed on both sides of the top of the rotating bracket 301. The cylinder bases 303 are fixed to the top of the rotating bracket 301 by bolts. The clamping cylinders 304 are fixed on the top of the cylinder bases 303. The clamping blocks 305 are fixedly connected to the driving end of the clamping cylinders 304.

[0030] The above scheme uses a clamping cylinder 304 to drive two clamping blocks 305 to clamp the workpiece to be tested. By setting the clamping blocks 305, the distance between the two clamping blocks 305 can be finely adjusted according to the cross-sectional size of the workpiece, which improves practicality. The tail bracket 302 is used to support the tail end of the workpiece that is not the inspection port, which improves the stability of the clamping by the clamping blocks 305.

[0031] In this embodiment, the rotating component 4 includes two annular sliders 401, which are slidably connected to the inner wall of the annular groove 6. A support rod 406 is fixedly connected to the top of the two annular sliders 401, and a support groove 402 is fixedly connected to the top of the support rod 406. A plurality of sliding rods 403 are fixedly connected between the inner walls of the support groove 402. An adjusting slider 405 is slidably connected through the plurality of sliding rods 403. The adjusting slider 405 is slidably connected to the inner wall of the support groove 402. A plurality of return springs 404 are fixedly connected between the two sides of the adjusting slider 405 and the two sides of the inner wall of the support groove 402. The plurality of return springs 404 are all sleeved on the outer wall of the plurality of sliding rods 403. The adjusting slider 405 is fixedly connected to the bottom end of the rotating bracket 301.

[0032] With the above scheme, the subsequent rotation of the rotary cylinder 407 causes the support rod 406 to slide along the inner wall of the annular groove 6 with the annular slider 401. The support rod 406 provides support and stability for the support groove 402. The rotation of the support groove 402 drives the clamping assembly 3 on it to rotate. The assembly includes a slide rod 403, a return spring 404, and an adjusting slider 405, which work in conjunction with the first slide groove 201 and the first slider 202 to facilitate control of the distance between the workpiece and the low-pressure detection assembly 2 or the high-pressure detection assembly 5. After the detection is completed, the return spring 404 drives the adjusting slider 405 to slide back along the slide rod 403 to the center of the support groove 402.

[0033] In this embodiment, a rotary cylinder 407 is fixedly provided at the bottom end of the support groove 402, and the rotary cylinder 407 is rotatably connected to the top end of the base plate 1.

[0034] The above scheme uses a rotary cylinder 407 to drive the support groove 402 to rotate, which in turn drives the entire rotating assembly 4 to rotate the clamping assembly 3, making it easier to perform two airtightness testing processes on the workpiece.

[0035] Working principle: When operating and using this utility model, as follows... Figures 1 to 4 As shown, during use, a low-pressure testing process is first performed. The clamping cylinder 304 drives two clamping blocks 305 to clamp the workpiece to be tested. Then, by pushing the first slider 202, it slides on the inner wall of the first slide groove 201, controlling the distance between the first interface 209 and the workpiece clamped at the clamping assembly 3. The first cylinder 203 drives the first fixed sleeve 205 to move up and down, making it easy to adjust the height of the first interface 209 to keep it consistent with the height of the test port of workpieces of different sizes. By setting the first pressure regulating valve 206, a low and stable test pressure is set and maintained. Then, the first solenoid valve 208 connects the first pressure regulating valve 206 to the test port of the workpiece. The first pressure sensor 207 monitors and feeds back the actual pressure value of the low-pressure circuit in real time to ensure accuracy.

[0036] Then, the high-pressure testing process is carried out. The rotary cylinder 407 rotates, causing the support rod 406 to slide along the inner wall of the annular groove 6 with the annular slider 401. The support rod 406 provides support and stability for the support groove 402. The rotation of the support groove 402 drives the clamping assembly 3 on it to rotate. The clamping assembly 3 is equipped with a slide rod 403, a return spring 404, and an adjusting slider 405, which work in conjunction with the first slide groove 201 and the first slider 202 to facilitate control of the distance between the workpiece and the low-pressure testing assembly 2 or the high-pressure testing assembly 5. After the test is completed, the return spring 404 drives the adjusting slider 405 to slide back along the slide rod 403 to the center of the support groove 402. The high-pressure process test is the same as the low-pressure process test.

[0037] The above are merely illustrative embodiments of this utility model and are not intended to limit the scope of this utility model. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of this utility model should fall within the protection scope of this utility model. Furthermore, it should be noted that the components of this utility model are not limited to the overall application described above. Each technical feature described in the specification of this utility model can be used individually or in combination as needed. Therefore, this utility model naturally covers other combinations and specific applications related to the points of this utility model.

Claims

1. An airtightness testing device, comprising a base plate (1), characterized in that: A low-pressure detection component (2) is fixedly provided on one side of the top of the base plate (1). A rotating component (4) is rotatably provided in the middle of the top of the base plate (1). A clamping component (3) is fixedly provided at the top of the rotating component (4). A high-pressure detection component (5) is provided on the other side of the top of the base plate (1). The low-pressure detection component (2) and the high-pressure detection component (5) are symmetrically distributed on the top of the base plate (1). An annular groove (6) is provided at the top of the base plate (1). The low-pressure detection component (2) includes a first slide groove (201), which is fixed to the top of the base plate (1). A first slider (202) is slidably connected to the inner wall of the first slide groove (201). A first cylinder (203) is fixedly provided at the top of the first slider (202), and a first fixing sleeve (205) is fixedly connected to the driving end of the first cylinder (203).

2. The airtightness testing device according to claim 1, characterized in that: The inner wall of the first fixed sleeve (205) is provided with a low-pressure air pump (204). One end of the low-pressure air pump (204) is connected to a first pressure regulating valve (206). One side of the first pressure regulating valve (206) is connected to a first pressure sensor (207). One side of the first pressure sensor (207) is connected to a first solenoid valve (208). One side of the first solenoid valve (208) is connected to a first interface (209).

3. The airtightness testing device according to claim 1, characterized in that: The high-voltage detection component (5) includes a second slide groove (501), which is fixed to the top of the base plate (1). A second slider (502) is slidably connected to the inner wall of the second slide groove (501). A second cylinder (503) is fixedly provided at the top of the second slider (502), and a second fixing sleeve (505) is fixedly connected to the driving end of the second cylinder (503).

4. The airtightness testing device according to claim 3, characterized in that: The inner wall of the second fixed sleeve (505) is fixed with a high-pressure air pump (504). One end of the high-pressure air pump (504) is connected to a second pressure regulating valve (506). One side of the second pressure regulating valve (506) is connected to a second pressure sensor (507). One side of the second pressure sensor (507) is connected to a second solenoid valve (508). One side of the second solenoid valve (508) is connected to a second interface (509).

5. The airtightness testing device according to claim 1, characterized in that: The clamping assembly (3) includes a rotating bracket (301). Two tail brackets (302) are symmetrically fixed on both sides of the top of the rotating bracket (301). Four cylinder bases (303), clamping cylinders (304) and clamping blocks (305) are symmetrically fixed on both sides of the top of the rotating bracket (301). The cylinder bases (303) are fixed to the top of the rotating bracket (301) by bolts. The clamping cylinders (304) are fixed on the top of the cylinder bases (303). The clamping blocks (305) are fixedly connected to the driving end of the clamping cylinders (304).

6. The airtightness testing device according to claim 1, characterized in that: The rotating assembly (4) includes two annular sliders (401), which are slidably connected to the inner wall of the annular groove (6). A support rod (406) is fixedly connected to the top of the two annular sliders (401), and a support groove (402) is fixedly connected to the top of the support rod (406). Several sliding rods (403) are fixedly connected between the inner walls of the support groove (402). Several sliding rods (403) are slidably connected through and to an adjusting slider (405). The adjusting slider (405) is slidably connected to the inner wall of the support groove (402). Several return springs (404) are fixedly connected between the two sides of the adjusting slider (405) and the two sides of the inner wall of the support groove (402). Several return springs (404) are all sleeved on the outer wall of several sliding rods (403). The adjusting slider (405) is fixedly connected to the bottom of the rotating bracket (301).

7. The airtightness testing device according to claim 6, characterized in that: A rotary cylinder (407) is fixedly provided at the bottom end of the support groove (402), and the rotary cylinder (407) is rotatably connected to the top end of the base plate (1).

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