Non-standard part position airtightness detection device

Abstract

The utility model relates to the field of instrument manufacturing, and discloses a non-standard part position airtightness detection device, which comprises a detection box, a sealing mechanism is arranged on the detection box, and a detection mechanism is arranged in the detection box. The sealing mechanism comprises two first sealing plates hinged to the two sides of the top of the detection box respectively, rotating shaft sleeves are fixedly connected to the opposite faces of the two first sealing plates respectively, rotating shafts are rotationally connected into the two rotating shaft sleeves respectively, and an exhaust pipe is slidably connected between the two rotating shafts jointly. According to the utility model, the air tightness is accurately judged through the air pressure change, the air storage tank, the pressurizing pipe, the electric air valve and the air pressure sensor in the detection mechanism are utilized to pressurize or vacuumize the space where the non-standard part is located, the air pressure data is monitored in real time, and the air pressure value change is more objective and sensitive; the device can be suitable for air tightness detection of non-standard parts with different specifications and dimensions.

Description

Technical Field

[0001] This utility model relates to the field of instrument manufacturing, specifically to a non-standard part position airtightness detection device. Background Technology

[0002] Non-standard parts vary in shape, size, and function, and are widely used in automobile manufacturing, aerospace, electronic equipment, medical devices, industrial machinery and other fields. The airtightness of these parts directly affects product performance and may even involve safety hazards. Therefore, airtightness testing is a key link in the production process.

[0003] In existing technologies, leaks are often detected by placing the part under test in water and observing the bubbles. However, for smaller parts, the bubbles produced are small and difficult to observe. Furthermore, drying is required after testing before the qualified product can be used, which affects production efficiency. Therefore, those skilled in the art provide a non-standard part location airtightness detection device to solve the problems mentioned in the background technology. Utility Model Content

[0004] The purpose of this invention is to provide a non-standard part location airtightness detection device, which solves the problem in the prior art that it is impossible to determine whether a smaller part is a standard part by observing air bubbles.

[0005] This utility model provides the following technical solution: a non-standard part position airtightness detection device, including a detection box, a sealing mechanism is provided on the detection box, and a detection mechanism is provided inside the detection box;

[0006] The sealing mechanism includes two first sealing plates hinged to the top sides of the test box, and rotating shaft sleeves fixedly connected to the opposite surfaces of the two first sealing plates. Rotating shafts are rotatably connected inside the two rotating shaft sleeves, and an air extraction pipe is slidably connected between the two rotating shafts. A second sealing plate is fixedly sleeved at the end of the air extraction pipe away from the first sealing plate, and an installation hole is provided at the center of the upper surface of the second sealing plate.

[0007] As a preferred embodiment of the above technical solution, the detection mechanism includes a gas storage box disposed inside the detection chamber. A pressurization pipe is connected to the center of the upper surface of the gas storage box. An electric air valve is fixedly installed at the end of the pressurization pipe opposite to the gas storage box. A mounting plate is disposed below the gas storage box. The lower surface of the mounting plate is fixedly connected to the bottom inner wall of the detection chamber. A mounting groove is formed at the center of the upper surface of the mounting plate. A pressure sensor is fixedly installed at the center of the mounting groove. A sealing ring is fixedly installed on the inner wall of the mounting groove. The bottom of the gas storage box slides within the sealing ring.

[0008] As a preferred embodiment of the above technical solution, the detection box is provided with a vacuum groove directly below the mounting plate, the lower surface of the second sealing plate is provided with a fixing groove, and the top of the gas storage box slides within the fixing groove.

[0009] As a preferred embodiment of the above technical solution, a controller is fixedly installed at the center of the side of the detection box opposite to the rotation axis.

[0010] As a preferred embodiment of the above technical solution, two first sliding grooves and two second sliding grooves are respectively opened at the adjacent positions of the two first sealing plates, the pressurizing pipe is slidably attached to the two first sliding grooves, and the air extraction pipe is slidably attached to the two second sliding grooves.

[0011] As a preferred embodiment of the above technical solution, the air extraction pipe is connected to the detection box, and the second sealing plate is slidably attached to the inner wall of the detection box.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model accurately judges air tightness by changing air pressure. It uses an air storage tank, pressurization pipe, electric air valve and air pressure sensor in the detection mechanism to pressurize or evacuate the space where the non-standard parts are located, and monitors the air pressure data in real time. The air pressure value changes are more objective and sensitive, and it can be used to test the air tightness of non-standard parts of different specifications and sizes.

[0014] 2. This utility model forms a sealed space by using the second sealing plate and the vacuum groove opened in the test box, and performs vacuum treatment on this space to make the gas storage box in a relatively vacuum environment, thereby reducing the influence of temperature on the gas pressure in the gas storage box and making the air tightness test results of non-standard parts more accurate. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a non-standard component location airtightness detection device.

[0016] Figure 2 This is a structural schematic diagram of a cross-section of a non-standard component location airtightness detection device;

[0017] Figure 3 This is an exploded structural diagram of the detection mechanism of a non-standard part position airtightness detection device;

[0018] Figure 4 A non-standard component position airtightness detection device Figure 2 A schematic diagram of the structure of A in the middle;

[0019] Figure 5 A non-standard component position airtightness detection device Figure 2 A schematic diagram of the structure of B in the middle.

[0020] Legend:

[0021] 1. Detection box; 2. Sealing mechanism; 21. First sealing plate; 22. Rotating shaft sleeve; 23. Rotating shaft; 24. Air extraction pipe; 25. Second sealing plate; 251. Mounting hole; 3. Detection mechanism; 31. Air storage tank; 32. Pressurization pipe; 33. Electric air valve; 34. Air pressure sensor; 35. Sealing ring; 36. Mounting plate; 361. Mounting groove; 4. Controller; 5. Vacuum chamber. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0023] Please see Figures 1-5 As shown, this utility model provides a technical solution: a non-standard part position airtightness detection device, including a detection box 1, a sealing mechanism 2 is provided on the detection box 1, and a detection mechanism 3 is provided inside the detection box 1;

[0024] The sealing mechanism 2 includes two first sealing plates 21 respectively hinged to the top sides of the test box 1. The two first sealing plates 21 are respectively fixedly connected to the opposite sides of the rotating shaft sleeves 22. The rotating shafts 23 are rotatably connected inside the two rotating shaft sleeves 22. The two rotating shafts 23 are slidably connected to each other. The end of the suction pipe 24 away from the first sealing plate 21 is fixedly sleeved with a second sealing plate 25. The upper surface of the second sealing plate 25 is provided with a mounting hole 251 at the center.

[0025] Specifically, the inside of the test chamber 1 forms a closed test cavity, providing a stable physical space for the airtightness testing of non-standard parts. It is made of high-strength corrosion-resistant metal to ensure that it will not deform under long-term pressure. The inner wall is precision-machined with low surface roughness, which can reduce the gas leakage path when it is used in conjunction with the sealing mechanism 2. A vacuum groove 5 is set at the bottom to form a negative pressure environment by evacuating air, which helps to test the airtightness performance of non-standard parts under pressure difference. Rubber pads are set at opposite ends of the two first sealing plates 21 to better seal the parts. The mounting hole 251 opened at the center of the upper surface of the second sealing plate 25 matches the pressure pipe 32 and is made of rubber inside to better seal the gas storage box 31.

[0026] As one implementation method in this embodiment, please refer to Figures 2-3As shown, the detection mechanism 3 includes an air storage box 31 disposed inside the detection chamber 1. A pressurization pipe 32 is connected to the center of the upper surface of the air storage box 31. An electric air valve 33 is fixedly installed at the end of the pressurization pipe 32 away from the air storage box 31. An installation plate 36 is disposed below the air storage box 31. The lower surface of the installation plate 36 is fixedly connected to the bottom inner wall of the detection chamber 1. An installation groove 361 is opened at the center of the upper surface of the installation plate 36. A pressure sensor 34 is fixedly installed at the center of the installation groove 361. A sealing ring 35 is fixedly installed on the inner wall of the installation groove 361. The bottom of the air storage box 31 slides within the sealing ring 35.

[0027] Specifically, the bottom edge of the air storage tank 31 is machined into a flange structure and embedded in the sealing ring 35 of the mounting groove 361 to form a dynamic seal. The pressurization pipe 32 is made of high-pressure resistant metal pipe, and its pressure bearing capacity meets the positive pressure detection requirements of most industrial scenarios. The electric air valve 33 can be precisely adjusted by the controller 4 to adjust the air flow rate and has a fast opening and closing function to ensure stable air pressure during the pressure holding stage.

[0028] As one implementation method in this embodiment, please refer to Figures 2-5 As shown, the detection box 1 is located directly below the mounting plate 36 and has a vacuum groove 5. The lower surface of the second sealing plate 25 has a fixing groove, and the top of the gas storage box 31 slides in the fixing groove.

[0029] Specifically, the vacuum tank 5 can further reduce the air pressure interference inside the detection box 1 and improve the accuracy of the detection. The lower surface of the second sealing plate 25 is provided with a fixing groove, and the top of the gas storage box 31 slides in the fixing groove. This structural design makes the gas storage box 31 and the second sealing plate 25 form a tight fit. When the sealing mechanism 2 is working, it can effectively prevent gas from leaking from the connection between the gas storage box 31 and the second sealing plate 25.

[0030] As one implementation method in this embodiment, please refer to Figure 1 As shown, a controller 4 is fixedly installed at the center of the side of the detection box 1 opposite to the rotating shaft 23.

[0031] In practice, the controller 4 uses a high-performance microprocessor with a built-in dedicated airtightness detection and control program. It can receive data transmitted by the air pressure sensor 34 and control components such as the electric air valve 33 according to preset detection parameters. At the same time, the controller 4 is also equipped with a human-machine interface to facilitate operators in setting parameters and viewing detection results.

[0032] As one implementation method in this embodiment, please refer to Figures 1-2 As shown, two first sliding grooves and two second sliding grooves are respectively opened at the adjacent positions of the two first sealing plates 21. The pressurizing pipe 32 is slidably attached to the two first sliding grooves, and the air extraction pipe 24 is slidably attached to the two second sliding grooves.

[0033] Specifically, by setting the pressurizing pipe 32 to slide and fit into two first sliding grooves, and the suction pipe 24 to slide and fit into two second sliding grooves, this sliding groove design not only guides and fixes the pressurizing pipe 32 and the suction pipe 24, but also ensures that the pressurizing pipe 32 and the suction pipe 24 can move smoothly during the opening and closing of the sealing mechanism 2, avoiding problems such as pipe twisting and blockage. In addition, the suction pipe 24 is connected to the detection box 1.

[0034] As one implementation method in this embodiment, please refer to Figures 1-2 As shown, the exhaust pipe 24 is connected to the detection box 1, and the second sealing plate 25 is slidably attached to the inner wall of the detection box 1.

[0035] Specifically, the second sealing plate 25 slides and adheres to the inner wall of the test chamber 1, further ensuring the airtightness of the test chamber 1 and making the entire airtightness test process more reliable and accurate.

[0036] Working principle: First, the rotation between the two rotating bushings 22 and the two rotating shafts 23 causes the two first sealing plates 21 to flip. Then, the non-standard parts to be tested are placed in the mounting groove 361. Next, the sealing ring 35 and the air storage box 31 are installed. After the air storage box 31 is installed, the second sealing plate 25 is fitted onto the pressurizing pipe 32 and the air storage box is placed against the fixing groove on it. Then, the electric air valve 33 is installed on the end of the pressurizing pipe 32 away from 31. The two first sealing plates 21 are flipped over, and the rubber pads on their opposite surfaces pressurize the pressurizing pipe 32 and the suction pipe 24. Further sealing is performed, and then the air extraction pipe 24 is connected to the air extraction pump to extract air from the closed area formed by the sealing mechanism 2 to achieve vacuum treatment. After the air extraction is completed, the pressurization pipe 32 is connected to the air compressor, and air at a certain pressure is input into the air storage tank 31 through the air compressor. The air pressure in the air storage tank 31 is monitored in real time by the air pressure sensor 34. When the air pressure in the air storage tank 31 is consistent with the input air pressure, the electric air valve 33 is activated and the input of gas is stopped. If the air pressure does not change after a period of time, the air tightness of the non-standard part is good; otherwise, the air tightness is poor.

[0037] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A non-standard component position airtightness detection device, comprising a detection box (1), characterized in that: The testing box (1) is provided with a sealing mechanism (2), and the testing box (1) is provided with a testing mechanism (3); The sealing mechanism (2) includes two first sealing plates (21) respectively hinged to the top sides of the detection box (1). The two first sealing plates (21) are respectively fixedly connected to the opposite sides of the two first sealing plates (21). The two rotating shafts (23) are rotatably connected inside the two rotating shafts (22). The two rotating shafts (23) are slidably connected to each other by a suction pipe (24). The end of the suction pipe (24) away from the first sealing plate (21) is fixedly sleeved with a second sealing plate (25). The upper surface of the second sealing plate (25) is provided with an installation hole (251).

2. The non-standard component position airtightness detection device according to claim 1, characterized in that: The detection mechanism (3) includes a gas storage box (31) set inside the detection box (1). A pressurizing pipe (32) is connected to the center of the upper surface of the gas storage box (31). An electric air valve (33) is fixedly installed at the end of the pressurizing pipe (32) away from the gas storage box (31). An installation plate (36) is set below the gas storage box (31). The lower surface of the installation plate (36) is fixedly connected to the bottom inner wall of the detection box (1). An installation groove (361) is opened at the center of the upper surface of the installation plate (36). A pressure sensor (34) is fixedly installed at the center of the installation groove (361). A sealing ring (35) is fixedly installed on the inner wall of the installation groove (361). The bottom of the gas storage box (31) slides in the sealing ring (35).

3. The non-standard part position airtightness detection device according to claim 2, characterized in that: The detection box (1) is located directly below the mounting plate (36) and has a vacuum groove (5). The lower surface of the second sealing plate (25) has a fixing groove, and the top of the gas storage box (31) slides in the fixing groove.

4. The non-standard part position airtightness detection device according to claim 1, characterized in that: A controller (4) is fixedly installed at the center of the side of the detection box (1) facing away from the rotating shaft (23).

5. The non-standard part position airtightness detection device according to claim 2, characterized in that: Two first grooves and two second grooves are respectively opened at the adjacent positions of the two first sealing plates (21). The pressurizing pipe (32) is slidably attached to the two first grooves, and the air extraction pipe (24) is slidably attached to the two second grooves.

6. The non-standard part position airtightness detection device according to claim 1, characterized in that: The air extraction pipe (24) is connected to the detection box (1), and the second sealing plate (25) slides against the inner wall of the detection box (1).

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