Air tightness detection device for fresh air system

Abstract

The utility model belongs to the technical field of air tightness detection, and discloses an air tightness detection device for a fresh air system, the air tightness detection device comprises a machine body, a to-be-detected air pipe and a supporting plate, one side of the machine body is provided with a detection channel, the inner wall of the detection channel is fixedly connected with a detection plate, and the inner wall of the detection plate is fixedly connected with a first magnet; an LED lamp strip is arranged on the inner wall of the first magnet, a spring is fixedly connected to the outer wall of the supporting plate, and a second magnet is fixedly connected to one end of the spring. Through the arrangement of the to-be-detected air pipe, the detection plate, the LED lamp strip, the detection channel, the alarm and the light sensation sensor, when the surface of the to-be-detected air pipe has cracks or air leakage holes, light of the LED lamp strip irradiates the interior of the to-be-detected air pipe through the cracks or the air leakage holes, the light sensation sensor senses the light, and the alarm gives an alarm; and a worker is warned that the air tightness of the to-be-detected air pipe is not qualified, so that the device does not pollute the air in the detection process of the to-be-detected air pipe.

Description

Technical Field

[0001] The present application relates to the technical field of air tightness detection, and more specifically, to an air tightness detection device for a fresh air system. Background Art

[0002] As the name suggests, the air tightness detection device is an organization that checks the air tightness of a device. Air tightness refers to the integrity of the connections of the container's various connection parts, and there will be no air leakage. In the fresh air system, the air tightness detection of the air duct is a very important process. Only when the air duct is airtight will there be no air leakage and dust. Most of the air tightness detection devices used in the fresh air system adopt the smoke test method. The principle is to inject smoke into the air duct, and whether smoke appears through the outer wall of the air duct can determine whether the air tightness of the air duct is qualified.

[0003] However, most of the existing air tightness detection devices for fresh air systems on the market currently use smoke tests, which will have a negative impact on the air environment, affect the surrounding working air, reduce the environmental protection of the device, and thus reduce the practicality of the device. Utility Model Content

[0004] In order to solve the above problems, the present application provides an air tightness detection device for a fresh air system.

[0005] The air tightness detection device for the fresh air system provided in this application adopts the following technical solution:

[0006] An air tightness detection device for a fresh air system comprises a body, an air duct to be detected and a support plate, wherein a detection channel is opened on one side of the body, a detection plate is fixedly connected to the inner wall of the detection channel, a first magnet is fixedly connected to the inner wall of the detection plate, an LED light strip is provided on the inner wall of the first magnet, a spring is fixedly connected to the outer wall of the support plate, a second magnet is fixedly connected to one end of the spring, a telescopic rod is fixedly connected to the inner wall of the second magnet, an alarm is fixedly connected to one side of the support plate, and a light sensor is provided on one side of the alarm.

[0007] One side of the second magnet is fixedly connected to a connecting rod, one end of the connecting rod is fixedly connected to a connecting plate, one side of the connecting plate is fixedly connected to an elastic band, and the outer wall of the elastic band is fixedly connected to a shading cloth.

[0008] Furthermore, the shape of the detection plate is a "ring" structure, and the shape of the first magnet is the same as that of the detection plate.

[0009] Through the above technical solution, the first magnet will also be in a circular shape, so that the magnetic force can be evenly distributed on the outer wall of the air duct to be detected.

[0010] Furthermore, the second magnet is an arc-shaped structure, and the shape of the connecting plate is the same as that of the second magnet.

[0011] Through the above technical solution, the arc-shaped second magnet and the connecting plate can better fit the inner wall of the air duct to be tested.

[0012] Furthermore, the telescopic rod is slidably sleeved with the spring, and one end of the telescopic rod is fixedly connected to the outer wall of the support plate.

[0013] With the above technical solution, the positions of the two second magnets will not be skewed when they move in relative directions.

[0014] Furthermore, the magnetic force of the second magnet and the magnetic force of the first magnet attract each other, and the shape of the elastic band is also a circular ring structure.

[0015] Through the above technical solution, when the air duct to be detected passes through the detection channel, the air duct to be detected moves and the position of the light sensor does not change.

[0016] Furthermore, a roller is provided at the bottom of the machine body, and the air duct to be inspected is movably connected with the inspection plate and the inspection channel.

[0017] Through the above technical solution, when the air duct to be inspected passes through the inspection channel, it will pass through the inspection plate, and then the air tightness of the air duct to be inspected can be inspected.

[0018] In summary, the present application includes at least one of the following beneficial technical effects:

[0019] (1) By setting up the air duct to be inspected, the inspection plate, the LED light strip, the inspection channel, the alarm and the light sensor, when there are cracks or air leaks on the surface of the air duct to be inspected, the light of the LED light strip will irradiate the inside of the air duct to be inspected through the cracks or air leaks, and the light sensor will sense the light, and the alarm will sound, alerting the staff that the air tightness of the air duct to be inspected is unqualified, thereby achieving the goal that the device will not cause air pollution during the inspection process of the air duct to be inspected, and will not affect the air around the work, effectively improving the environmental protection of the device, thereby greatly improving the practicality of the device.

[0020] (2) By setting the support plate, spring, second magnet and telescopic rod, since the telescopic rod can be extended and retracted, the second magnet is an arc-shaped structure, and the two second magnets can move in relative directions, thereby reducing the distance between the two second magnets, and the light sensor can be used inside a smaller air duct to be detected, thereby expanding the use range of the device, thereby further meeting the use requirements of the device, and is worthy of promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of an air tightness detection device for a fresh air system;

[0022] Figure 2 for Figure 1 A magnified view of the structure at center A;

[0023] Figure 3 It is a front cross-sectional view of the air duct to be tested in this application;

[0024] Figure 4 It is a side view of the second magnet in this application.

[0025] Description of the numbers in the figure:

[0026] 1. Machine body; 2. Roller; 3. Air duct to be tested; 4. Test board; 5. First magnet; 6. LED light strip; 7. Test channel; 8. Support plate; 9. Spring; 10. Second magnet; 11. Telescopic rod; 12. Alarm; 13. Light sensor; 14. Connecting rod; 15. Connecting plate; 16. Elastic band; 17. Shading cloth. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0028] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0029] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] The following is combined with Figure 1-4 This application is described in further detail.

[0031] The present application embodiment discloses an air tightness detection device for a fresh air system. Please refer to Figure 1-4 , including a body 1, an air duct to be detected 3 and a support plate 8, a detection channel 7 is opened on one side of the body 1, a detection plate 4 is fixedly connected to the inner wall of the detection channel 7, a first magnet 5 is fixedly connected to the inner wall of the detection plate 4, an LED light strip 6 is arranged on the inner wall of the first magnet 5, and the LED light strip 6 can emit a strong light source when started, a spring 9 is fixedly connected to the outer wall of the support plate 8, a second magnet 10 is fixedly connected to one end of the spring 9, a telescopic rod 11 is fixedly connected to the inner wall of the second magnet 10, an alarm 12 is fixedly connected to one side of the support plate 8, and a light sensor 13 is arranged on one side of the alarm 12, LE The LED light strip 6, alarm 12 and light sensor 13 are all existing devices and will not be explained in detail here. When there are cracks or air leaks on the surface of the air duct 3 to be inspected, the light of the LED light strip 6 will pass through the cracks or air leaks to the inside of the air duct 3 to be inspected. The light sensor 13 senses the light and the alarm 12 will sound an alarm to warn the staff that the air tightness of the air duct 3 to be inspected is unqualified, thereby achieving the goal that the device will not cause air pollution during the inspection process of the air duct 3 to be inspected and will not affect the air around the work, effectively improving the environmental protection of the device and thus greatly improving the practicality of the device.

[0032] A connecting rod 14 is fixedly connected to one side of the second magnet 10, a connecting plate 15 is fixedly connected to one end of the connecting rod 14, an elastic band 17 is fixedly connected to one side of the connecting plate 15, and a shading cloth 16 is fixedly connected to the outer wall of the elastic band 17. The shading cloth 16 can shield the two ends of the air duct 3 to be detected, so as to prevent the light sensor 13 from sensing the light at the two end ports of the air duct 3 to be detected.

[0033] In this embodiment, the shape of the detection plate 4 is a "ring" structure, and the shape of the first magnet 5 is the same as that of the detection plate 4. The first magnet 5 is also ring-shaped, so that the magnetic force can be evenly distributed on the outer wall of the air duct 3 to be detected.

[0034] In this embodiment, the second magnet 10 is an arc-shaped structure, and the shape of the connecting plate 15 is the same as that of the second magnet 10. Since most of the air ducts 3 to be detected are circular pipes, the arc-shaped second magnet 10 and the connecting plate 15 can better fit the inner wall of the air duct 3 to be detected.

[0035] In this embodiment, the telescopic rod 11 is slidably connected to the spring 9, and one end of the telescopic rod 11 is fixedly connected to the outer wall of the support plate 8. Since the telescopic rod 11 can be extended and retracted, the positions of the two second magnets 10 will not be skewed when they move in relative directions.

[0036] In this embodiment, the magnetic force of the second magnet 10 and the magnetic force of the first magnet 5 attract each other, and the shape of the elastic band 17 is also a circular ring structure. Since the magnetic forces of the second magnet 10 and the first magnet 5 are relatively large, when the air duct 3 to be detected passes through the detection channel 7, the air duct 3 to be detected moves, and the position of the light sensor 13 will not change.

[0037] In this embodiment, a roller 2 is provided at the bottom of the body 1, and the air duct 3 to be inspected is movably connected with the inspection plate 4 and the inspection channel 7. The roller 2 can more conveniently move the body 1 to the required working position. When the air duct 3 to be inspected passes through the inspection channel 7, it will pass through the inspection plate 4, and then the air tightness of the air duct 3 to be inspected can be inspected.

[0038] The implementation principle of the air tightness detection device for the fresh air system of the embodiment of the present application is as follows: first, the two second magnets 10 are pressed to reduce the distance between the two second magnets 10, and the two second magnets 10 are placed on the inner wall of the air duct 3 to be detected. The elastic force of the spring 9 makes the two second magnets 10 closely attached to the inner wall of the air duct 3 to be detected. At this time, the magnetic force of the first magnet 5 tightly attracts the two second magnets 10;

[0039] Secondly, the LED light strip 6 is started, and the air duct 3 to be inspected is passed through the inspection channel 7, and then the two second magnets 10 slide on the inner wall of the air duct 3 to be inspected, and the air duct 3 to be inspected moves, and the position of the light sensor 13 does not change. When there are cracks or air leaks on the surface of the air duct 3 to be inspected, the light of the LED light strip 6 will pass through the cracks or air leaks to the inside of the air duct 3 to be inspected, and the light sensor 13 senses the light, and the alarm 12 will sound an alarm, alerting the staff that the air tightness of the air duct 3 to be inspected is unqualified;

[0040] Finally, the elastic band 16 is elastic and will not affect the displacement of the two second magnets 10. The shading cloth 16 can shield the two ends of the air duct 3 to be detected, preventing the light sensor 13 from sensing the light at the two end ports of the air duct 3 to be detected.

[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An air tightness detection device for a fresh air system, comprising a body (1), an air duct to be detected (3) and a support plate (8), characterized in that: A detection channel (7) is provided on one side of the body (1); a detection plate (4) is fixedly connected to the inner wall of the detection channel (7); a first magnet (5) is fixedly connected to the inner wall of the detection plate (4); an LED light strip (6) is provided on the inner wall of the first magnet (5); a spring (9) is fixedly connected to the outer wall of the support plate (8); a second magnet (10) is fixedly connected to one end of the spring (9); a telescopic rod (11) is fixedly connected to the inner wall of the second magnet (10); an alarm (12) is fixedly connected to one side of the support plate (8); and a light sensor (13) is provided on one side of the alarm (12); One side of the second magnet (10) is fixedly connected to a connecting rod (14), one end of the connecting rod (14) is fixedly connected to a connecting plate (15), one side of the connecting plate (15) is fixedly connected to an elastic band (17), and the outer wall of the elastic band (17) is fixedly connected to a blackout cloth (16).

2. The air tightness detection device for the fresh air system according to claim 1, characterized in that: The shape of the detection plate (4) is a "ring" structure, and the shape of the first magnet (5) is the same as that of the detection plate (4).

3. The air tightness detection device for the fresh air system according to claim 1, characterized in that: The second magnet (10) is an arc-shaped structure, and the shape of the connecting plate (15) is the same as that of the second magnet (10).

4. The air tightness detection device for the fresh air system according to claim 1, characterized in that: The telescopic rod (11) is slidably sleeved with the spring (9), and one end of the telescopic rod (11) is fixedly connected to the outer wall of the support plate (8).

5. The air tightness detection device for the fresh air system according to claim 1, characterized in that: The magnetic force of the second magnet (10) and the magnetic force of the first magnet (5) attract each other, and the shape of the elastic band (17) is also a circular ring structure.

6. The air tightness detection device for the fresh air system according to claim 1, characterized in that: A roller (2) is provided at the bottom of the machine body (1), and the air duct (3) to be detected is movably sleeved with the detection plate (4) and the detection channel (7).

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