Air tightness detector

Abstract

The utility model discloses an air tightness detector, which comprises a processing table, a lifting table and a fixing frame, an air pump is fixedly connected to the left side of the top of the machining table, the first output end of the air pump is connected with a gas infusion piece through a first air pressure conveying pipe, a non-return assembly used for preventing gas backflow is arranged in the gas infusion piece, and an electric push rod used for pushing the gas infusion piece is installed on the front side of the top of the machining table. The lifting table is adjustably connected to the rear side of the top of the machining table through an adjusting piece. The left end and the right end of the top of the lifting table are connected with sealing piece carrying plates through detachable assemblies. The fixing frame is fixedly connected to the rear side of the top of the machining table, and an air pressure detection assembly is arranged on the fixing frame and connected with the gas infusion part. The air tightness detection device is used for improving the stability and accuracy of air tightness detection and reducing detection errors caused by pressure fluctuation.

Description

Technical Field

[0001] The utility model relates to the technical field of air tightness detection, in particular to an air tightness detector. Background Art

[0002] With the rapid development of industrial technology and everyday equipment, performance requirements for these devices are becoming increasingly stringent. Airtightness has become a key performance indicator, particularly in applications requiring precise control of environmental conditions. Airtightness, which refers to the ability of an object or system to prevent gas leakage, is crucial for ensuring device functionality and extending its lifespan. Across numerous industries, such as healthcare, biotechnology, and electronics manufacturing, high-quality airtightness not only critically affects the proper functioning of equipment but also directly impacts product safety and user experience.

[0003] Steam glasses are a special type of medical or healthcare device that uses steam to apply heat to the eyes, alleviating symptoms such as eye fatigue and dryness. To ensure the safety and effectiveness of steam glasses, the airtightness of their seals is crucial. A good seal prevents steam leakage, ensuring that heat is effectively focused on the eye area while minimizing heat loss and environmental interference, thereby enhancing treatment effectiveness.

[0004] However, existing air tightness testers have some shortcomings in their application in small precision equipment such as steam glasses. Specifically, when gas is infused at the output end, gas backflow is easily generated, resulting in a continuous pressure balance between the air pressure inside the seal and the air pressure at the output end, causing the air pressure value data inside the seal to rise and fall, making it difficult for users to accurately judge the air tightness of the seal. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose an airtightness tester for improving the stability and accuracy of airtightness detection and reducing detection errors caused by pressure fluctuations. In addition, the device can replace the sealing carrier plate according to the degree of wear to avoid unstable test conditions caused by carrier plate wear.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] An airtightness detector, comprising:

[0008] A processing table (1) is fixedly connected to an air pump (4) on the left side of its top, a first output end of the air pump (4) is connected to a gas infusion component (11) via a first air pressure delivery pipe (6), a check assembly for preventing gas backflow is provided in the gas infusion component (11), and an electric push rod (10) for pushing the gas infusion component (11) is installed on the front side of the top of the processing table (1);

[0009] A lifting platform (20) is adjustably connected to the rear side of the top of the processing table (1) through an adjusting member, and the left and right ends of the top of the lifting platform (20) are connected to the sealing member carrier plate (13) through a detachable component;

[0010] A fixing frame (3) is fixedly connected to the top rear side of the processing table (1), and an air pressure detection component is provided on the fixing frame (3), and the air pressure detection component is connected to the gas infusion component (11);

[0011] When in use, a sealing member that fits into the inner groove of the sealing member carrier plate (13) is mounted on the surface of the sealing member carrier plate (13), and the gas infusion member (11) abuts against the air inlet of the sealing member under the push of the electric push rod (10).

[0012] Preferably, the air pressure detection component comprises: an air pressure detection gauge (8), an air pressure detection tube (9);

[0013] The air pressure detection gauge (8) is fixedly connected to the fixing frame (3);

[0014] The air pressure detection tube (9) comprises a first detection end and a second detection end, and the first detection end and the second detection end are respectively fixedly connected to the left and right ends of the gas infusion piece (11).

[0015] Preferably, the second output end of the air pump (4) is fixedly connected to a second air pressure delivery pipe (5), the other end of the second air pressure delivery pipe (5) is fixedly connected to a cylinder (7), and the output end of the cylinder (7) passes through the fixing frame (3) and is fixedly connected to a fixing plate (12);

[0016] When the air pump (4) is started, the output end of the air cylinder (7) drives the fixing plate (12) to press downward, thereby further fixing the sealing member.

[0017] Preferably, a central controller (2) is fixedly connected to the front outer wall of the processing table (1), and the central controller (2) is used to start the air pump (4), the electric push rod (10) and the air pressure detection gauge (8).

[0018] Preferably, the check group comprises fixed tubes (17) arranged at the left and right ends of the gas infusion member (11), and a first connecting member and a second connecting member are arranged in the fixed tubes (17);

[0019] Both left and right ends of the first connecting member are fixedly connected to a strong tension spring (18), the other end of the strong tension spring (18) is fixedly connected to a sealing plate (19), and the sealing plate (19) is rotatably connected to the second connecting member;

[0020] Wherein, the first air pressure delivery pipe (6) is connected to the fixed pipe (17).

[0021] Preferably, the detachable component comprises a chute tube (15) fixedly connected to the left and right ends of the top of the lifting platform (20), and a slide rod (16) is slidably connected in the chute tube (15);

[0022] A return spring (21) is fixedly connected to the rear end of the inner wall of the chute tube (15), and the other end of the return spring (21) is fixedly connected to the front end of the slide rod (16). The four sides of the outer wall of the front end of the slide rod (16) are rotatably connected to the first connecting rod (22), and the other end of the first connecting rod (22) is rotatably connected to the second connecting rod (23). The connection of the second connecting rod (23) is connected to an extrusion block (24);

[0023] When the sealing member carrier plate (13) is mounted on the lifting platform (20), the chute tube (15) is located inside the sealing member carrier plate (13), and the extrusion block (24) is detachably connected to the inner wall of the sealing member carrier plate (13) under the elastic force of the return spring (21).

[0024] Preferably, the adjusting member is an adjusting screw (14).

[0025] The utility model has the following beneficial effects:

[0026] 1. In the present invention, the air pressure detection component is used to detect the air pressure of the sealed cavity formed between the gas infusion component and the sealing component, and the check component is used to prevent gas backflow, thereby maintaining the pressure in the detection area stable, improving the stability and accuracy of the detection process, reducing the detection error caused by pressure fluctuations, improving the accuracy of the device in detecting the air tightness of the sealing component, and enhancing the reliability of the detection.

[0027] 2. In the present invention, the seal carrier plate can be easily replaced according to the degree of wear, thereby avoiding unstable test conditions caused by wear of the seal carrier plate, ensuring that the equipment is in a good test state during each test, simplifying the maintenance process, reducing the complexity of operations for technicians, and making equipment maintenance more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a three-dimensional diagram of an air tightness detector proposed by the present utility model;

[0029] Figure 2 A half-section diagram of a fixing frame of an air tightness detector proposed in the present invention;

[0030] Figure 3 A half-section diagram of a gas injection component of an air tightness detector proposed in the present invention;

[0031] Figure 4 This is a half-section diagram of a fixed tube of an air tightness detector proposed in the utility model;

[0032] Figure 5 This is a schematic diagram of the lifting platform structure of an air tightness tester proposed in the utility model;

[0033] Figure 6 This is a half-section view of a sealing carrier plate of an airtightness tester proposed by the present invention.

[0034] Legend:

[0035] 1. Processing table; 2. Central controller; 3. Fixed frame; 4. Air pump; 5. Second air pressure delivery pipe; 6. First air pressure delivery pipe; 7. Air cylinder; 8. Air pressure detection gauge; 9. Air pressure detection tube; 10. Electric push rod; 11. Gas infusion component; 12. Fixed plate; 13. Sealing component carrier plate; 14. Adjusting screw; 15. Slide tube; 16. Slide rod; 17. Fixed tube; 18. Strong tension spring; 19. Sealing plate; 20. Lifting platform; 21. Return spring; 22. First connecting rod; 23. Second connecting rod; 24. Extrusion block. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] Reference Figure 1 and Figure 2 The utility model provides an embodiment of an air tightness detector, comprising a processing table 1, a lifting platform 20 and a fixing frame 3.

[0038] An air pump 4 is fixedly connected to the left side of the top of the processing table 1. The first output end of the air pump 4 is connected to a gas infusion component 11 through a first air pressure delivery pipe 6. A check assembly is provided in the gas infusion component 11 to prevent gas backflow. An electric push rod 10 is installed on the front side of the top of the processing table 1 to push the gas infusion component 11.

[0039] The lifting platform 20 is adjustably connected to the rear side of the top of the processing table 1 through an adjusting member, and the left and right ends of the top of the lifting platform 20 are connected to the sealing member carrier 13 through detachable components;

[0040] The fixing frame 3 is fixedly connected to the top rear side of the processing table 1. The fixing frame 3 is provided with an air pressure detection component, which is connected to the gas infusion component 11.

[0041] When in use, a sealing member that fits into the inner groove of the sealing member carrier plate 13 is installed on the surface thereof, and the gas infusion member 11 abuts against the gas inlet of the sealing member under the push of the electric push rod 10 .

[0042] Specifically, after the airtightness tester is activated, the electric push rod 10 pushes the gas infusion member 11 into contact with the air inlet of the seal. When the gas generated by the air pump 4 is infused into the gas infusion member 11 via the first air pressure delivery tube 6, the air pressure in the gas infusion member 11 increases, causing the check assembly to open under high pressure, thereby allowing gas to be infused into the seal from the air inlet of the seal, increasing the air pressure in the seal. When the gas stops being infused, the check assembly closes, forming a sealed cavity between the gas infusion member 11 and the seal. The air pressure detection assembly then performs air pressure detection on the sealed cavity formed between the gas infusion member 11 and the seal. The above structural design not only facilitates the detection of the sealing property inside the seal, but also avoids detection errors caused by gas backflow, thereby improving detection accuracy.

[0043] Furthermore, the air pressure detection component includes: an air pressure detection meter 8 and an air pressure detection tube 9.

[0044] Reference Figure 3 , the air pressure detection meter 8 is fixedly connected to the fixing frame 3; the air pressure detection tube 9 includes a first detection end and a second detection end, the first detection end and the second detection end are respectively fixedly connected to the left and right ends of the gas infusion member 11.

[0045] Specifically, after a sealed cavity is formed between the gas infusion component 11 and the sealing component, the air pressure detection meter 8 detects the air pressure of the sealed cavity through the air pressure detection tube 9. If air leakage occurs, it is considered that the air tightness of the sealing component does not meet the standard.

[0046] Furthermore, the second output end of the air pump 4 is fixedly connected to the second air pressure delivery pipe 5, and the other end of the second air pressure delivery pipe 5 is fixedly connected to the cylinder 7. The output end of the cylinder 7 passes through the fixed frame 3 and is fixedly connected to the fixed plate 12;

[0047] When the air pump 4 is started, the output end of the air cylinder 7 drives the fixing plate 12 to press down, thereby further fixing the sealing member.

[0048] Specifically, after the air tightness tester is started, the gas generated by the air pump 4 is infused into the cylinder 7 through the second air pressure delivery pipe 6, and the output end of the cylinder 7 extends, causing the fixed plate 12 to press down until it abuts against the seal on the surface of the seal carrier plate 13, further fixing the seal and preventing the seal from detaching from the seal carrier plate 13 due to the abutment of the gas infusion part 11.

[0049] Furthermore, the first air pressure delivery pipe 6 , the second air pressure delivery pipe 5 and the air pressure detection pipe 9 are all soft tubes.

[0050] Furthermore, a central controller 2 is fixedly connected to the outer wall of the front end of the processing table 1, and the central controller 2 is used to start the air pump 4, the electric push rod 10 and the air pressure detection gauge 8.

[0051] Further, refer to Figure 3 and Figure 4 The check group includes a fixed tube 17 provided at the left and right ends of the gas infusion member 11, and a first connecting member and a second connecting member are provided in the fixed tube 17;

[0052] The left and right ends of the first connecting member are fixedly connected to a strong tension spring 18, the other end of the strong tension spring 18 is fixedly connected to a sealing plate 19, and the sealing plate 19 is rotatably connected to the second connecting member;

[0053] The first air pressure delivery pipe 6 is connected to the fixed pipe 17 .

[0054] Specifically, when the air pump 4 is used to infuse external gas into the gas infusion component 11 through the first air pressure delivery pipe 6, the air pressure in the gas infusion component 11 increases, causing the sealing plate 19 to open under the high-pressure environment, thereby allowing gas to be infused into the sealing component from the air inlet of the sealing component, causing the air pressure in the sealing component to increase. When the gas stops being infused, the strong tension spring 18 closes the sealing plate 19 through tension, forming a closed cavity between the gas infusion component 11 and the sealing component.

[0055] Further, refer to Figure 5 , the detachable component includes a chute tube 15 fixedly connected to the left and right ends of the top of the lifting platform 20, and a slide rod 16 is slidably connected in the chute tube 15;

[0056] Reference Figure 6 , a return spring 21 is fixedly connected to the rear end of the inner wall of the chute tube 15, and the other end of the return spring 21 is fixedly connected to the front end of the slide rod 16. The four sides of the outer wall of the front end of the slide rod 16 are rotatably connected to the first connecting rod 22, and the other end of the first connecting rod 22 is rotatably connected to the second connecting rod 23. The connection of the second connecting rod 23 is connected to the extrusion block 24;

[0057] When the seal carrier 13 is mounted on the lifting platform 20 , the chute tube 15 is located inside the seal carrier 13 , and the extrusion block 24 is detachably connected to the inner wall of the seal carrier 13 under the elastic force of the return spring 21 .

[0058] Specifically, when the sealing carrier plate 13 needs to be replaced, the extrusion block 24 is caused to fall off the inner wall of the sealing carrier plate 13 by pulling the slide rod 16, so that the sealing carrier plate 13 can be removed from the lifting platform 20, which is convenient for replacing the sealing carrier plate 13 after it has been used for a long time, reducing the unstable test conditions caused by the wear of the sealing carrier plate 13, and ensuring that the equipment is in a good test state during each inspection.

[0059] Furthermore, the adjusting member is an adjusting screw 14. By rotating the adjusting screw 14, the height of the lifting platform 20 can be adjusted to facilitate alignment of the air inlet of the seal on the seal carrier plate 13 with the gas infusion member 11.

[0060] Working Principle: When air pump 4 infuses ambient air into gas infusion member 11 via first air pressure delivery tube 6, the pressure within gas infusion member 11 increases, causing sealing plate 19 to open, allowing gas to flow into the seal through the seal's air inlet, raising the pressure within the seal. When gas infusion stops, the strong tension spring 18 pulls sealing plate 19 closed, forming a sealed cavity between gas infusion member 11 and the seal. Pressure gauge 8 then monitors the sealed cavity through pressure detection tube 9, facilitating airtightness testing within the seal while preventing gas backflow.

[0061] When the seal carrier plate 13 needs to be replaced, the extrusion block 24 is removed from the inner wall of the seal carrier plate 13 by pulling the slide bar 16 , so that the seal carrier plate 13 can be removed from the lifting platform 20 , making it easier to replace the seal carrier plate 13 .

[0062] The height of the lifting platform 20 can be adjusted by rotating the adjusting screw 14 to facilitate alignment of the gas inlet of the sealing member on the sealing member carrier plate 13 with the gas infusion member 11 .

[0063] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An airtightness detector, characterized in that: include: A processing table (1) is fixedly connected to an air pump (4) on the left side of its top, a first output end of the air pump (4) is connected to a gas infusion component (11) via a first air pressure delivery pipe (6), a check assembly for preventing gas backflow is provided in the gas infusion component (11), and an electric push rod (10) for pushing the gas infusion component (11) is installed on the front side of the top of the processing table (1); A lifting platform (20) is adjustably connected to the rear side of the top of the processing table (1) through an adjusting member, and the left and right ends of the top of the lifting platform (20) are connected to the sealing member carrier plate (13) through a detachable component; A fixing frame (3) is fixedly connected to the top rear side of the processing table (1), and an air pressure detection component is provided on the fixing frame (3), and the air pressure detection component is connected to the gas infusion component (11); When in use, a sealing member that fits into the inner groove of the sealing member carrier plate (13) is mounted on the surface of the sealing member carrier plate (13), and the gas infusion member (11) abuts against the air inlet of the sealing member under the push of the electric push rod (10).

2. The airtightness detector according to claim 1, characterized in that: The air pressure detection component comprises: an air pressure detection meter (8), an air pressure detection tube (9); The air pressure detection gauge (8) is fixedly connected to the fixing frame (3); The air pressure detection tube (9) comprises a first detection end and a second detection end, and the first detection end and the second detection end are fixedly connected to the left and right ends of the gas infusion component (11), respectively.

3. The airtightness detector according to claim 1, characterized in that: The second output end of the air pump (4) is fixedly connected to a second air pressure delivery pipe (5), the other end of the second air pressure delivery pipe (5) is fixedly connected to a cylinder (7), and the output end of the cylinder (7) passes through the fixed frame (3) and is fixedly connected to a fixed plate (12); When the air pump (4) is started, the output end of the air cylinder (7) drives the fixing plate (12) to press downward, thereby further fixing the sealing member.

4. The airtightness detector according to claim 2, characterized in that: A central controller (2) is fixedly connected to the outer wall of the front end of the processing table (1), and the central controller (2) is used to start the air pump (4), the electric push rod (10) and the air pressure detection gauge (8).

5. The airtightness detector according to claim 1, characterized in that: The check group comprises fixed tubes (17) arranged at the left and right ends of the gas infusion member (11), wherein a first connecting member and a second connecting member are arranged in the fixed tube (17); Both left and right ends of the first connecting member are fixedly connected to a strong tension spring (18), the other end of the strong tension spring (18) is fixedly connected to a sealing plate (19), and the sealing plate (19) is rotatably connected to the second connecting member; Wherein, the first air pressure delivery pipe (6) is connected to the fixed pipe (17).

6. The airtightness detector according to claim 1, characterized in that: The detachable component comprises a chute tube (15) fixedly connected to the left and right ends of the top of the lifting platform (20), and a slide rod (16) is slidably connected in the chute tube (15); A return spring (21) is fixedly connected to the rear end of the inner wall of the chute tube (15), and the other end of the return spring (21) is fixedly connected to the front end of the slide rod (16). The four sides of the outer wall of the front end of the slide rod (16) are rotatably connected to the first connecting rod (22), and the other end of the first connecting rod (22) is rotatably connected to the second connecting rod (23). The connection of the second connecting rod (23) is connected to an extrusion block (24); When the sealing member carrier plate (13) is mounted on the lifting platform (20), the chute tube (15) is located inside the sealing member carrier plate (13), and the extrusion block (24) is detachably connected to the inner wall of the sealing member carrier plate (13) under the elastic force of the return spring (21).

7. The airtightness detector according to claim 1, characterized in that: The adjusting member is an adjusting screw (14).

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