Multi-path gas controller

Abstract

The utility model relates to the technical field of controllers, in particular to a multi-path gas controller which comprises a controller body, a first leakage-proof assembly is arranged at the gas inlet end of the controller body, a second leakage-proof assembly is arranged at the gas outlet end of the controller body, and the controller body is communicated with a gas supply pipeline through the first leakage-proof assembly and the second leakage-proof assembly. The second leakage-proof assembly comprises a first leakage-proof branch pipe, a first sealing plug, a gap sealing sleeve, a movable shaft and a telescopic motor, the top end of the first leakage-proof branch pipe is open, one side of the first leakage-proof branch pipe is communicated with the controller body, and the telescopic motor is located at the bottom end of the first leakage-proof branch pipe, the bottom end of the movable shaft penetrates through the bottom end of the first leakage-proof branch pipe and is in transmission connection with the telescopic motor, and the top end of the movable shaft is connected with the first sealing plug; and the bottom end of the clearance sealing sleeve is connected with the inner bottom surface of the first leakage-proof branch pipe. According to the gas leakage prevention device, when gas leakage occurs, the telescopic motor ejects the movable shaft out, the first sealing plug is attached to the opening in the top end of the first leakage prevention branch pipe, a gas path is closed, and therefore gas leakage is further avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of controllers, in particular to a multi-channel gas controller. Background Art

[0002] The gas controller is a device that collects gas data, controls flow, and monitors gas quality. It also issues an alarm to warn when abnormal test results are detected.

[0003] The patent application document with publication number CN210894295U and patent name "A Multi-channel Gas Acquisition Controller" provides a technical solution for solving the problem of gas leakage when the controller is connected to the pipeline. The solution solves the problem of gas leakage when the pipeline is connected by wrapping and tightening the sealing tape with a fixing tape.

[0004] However, the tensioning force of the fixing belt mainly comes from the spring, and the tightening strength cannot be guaranteed. At the same time, material fatigue will cause the tightening strength to be unstable.

[0005] Therefore, it is necessary to design a controller with more stable sealing performance. Utility Model Content

[0006] The present invention aims to solve the problems existing in the prior art and provides the following technical solutions:

[0007] A multi-channel gas controller comprising:

[0008] A controller body, wherein the air inlet end of the controller body has a leak-proof component 1, the air outlet end of the controller body has a leak-proof component 2, and the controller body is connected to the air supply pipeline through the leak-proof component 1 and the leak-proof component 2;

[0009] Among them, the leakage-proof component 2 includes a leakage-proof branch pipe 1, a sealing plug 1, a gap sealing sleeve, a dynamic shaft and a telescopic motor. The top of the leakage-proof branch pipe 1 is open, and one side is connected to the controller body. The telescopic motor is located at the bottom end of the leakage-proof branch pipe 1. The bottom end of the dynamic shaft passes through the bottom end of the leakage-proof branch pipe 1 and is transmission-connected to the telescopic motor. The top end is connected to the sealing plug 1. The gap sealing sleeve is sleeved on the dynamic shaft, and the bottom end is connected to the inner bottom surface of the leakage-proof branch pipe 1.

[0010] As an improvement of the above technical solution, the top opening of the leak-proof branch pipe 1 is smaller than the inner diameter of the leak-proof branch pipe 1, and the sealing plug 1 is sealed with the top opening of the leak-proof branch pipe 1.

[0011] As an improvement to the above technical solution, a gap sealing structure is formed between the gap sealing sleeve and the dynamic shaft, and the length of the gap sealing sleeve is smaller than the length of the dynamic shaft.

[0012] As an improvement of the above technical solution, the leakage-proof component 1 includes at least a leakage-proof branch pipe 2, a spring rod and a sealing plug 2. The top end of the leakage-proof branch pipe 2 is open, and one side is connected to the controller body. The spring rod is located in the leakage-proof branch pipe 2, the bottom end is fixed to the inner bottom surface of the leakage-proof branch pipe 2, and the top end is connected to the sealing plug 2. The sealing plug 2 is adapted to the top end opening of the leakage-proof branch pipe 2.

[0013] As an improvement of the above technical solution, the top opening of the second leak-proof branch pipe is smaller than the inner diameter of the second sealing plug, and the maximum length of the spring rod is greater than the length of the second leak-proof branch pipe.

[0014] As an improvement to the above technical solution, the signal input end of the telescopic motor is electrically connected to the signal output end of the controller body, and the telescopic motor has a self-locking structure.

[0015] Beneficial effects of the utility model:

[0016] When in use, the opening and bottom ends of the leak-proof branch pipe 1 are both provided with connecting flanges, and the telescopic motor can be connected and fixed to the leak-proof branch pipe 1 through the connecting flanges. Furthermore, the connecting flanges also have an annular groove for accommodating a sealing ring, which is further sealed by the sealing ring after engagement.

[0017] In normal operation, the telescopic motor retracts the movable shaft, separating the sealing plug 1 from the top opening of the leak-proof branch pipe 1 to ensure that the gas path is normal. When gas leakage occurs, the telescopic motor pushes the movable shaft out, making the sealing plug 1 fit with the top opening of the leak-proof branch pipe 1, closing the gas path and further preventing gas leakage.

[0018] When the gas flows, the gas will act on the second sealing plug to compress the spring rod to ensure that the pipeline is normal. When the second leak-proof component is activated, the gas path is disconnected, and the second sealing plug is lifted up by the spring rod and sealed with the top opening of the second leak-proof branch pipe to further achieve sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a top view of the overall structure of the utility model;

[0020] Figure 2 for Figure 1 Cross-sectional view at AA in the middle;

[0021] Figure 3 for Figure 1 Cross-sectional view at the middle BB.

[0022] Figure numerals: 10, controller body; 20, leak-proof component 1; 21, leak-proof branch pipe 2; 22, spring rod; 23, sealing plug 2; 30, leak-proof component 2; 31, leak-proof branch pipe 1; 32, sealing plug 1; 33, gap sealing sleeve; 34, moving shaft; 35, telescopic motor. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] A common method of solving the problem of air leakage during pipe connection is to wrap a fixing tape around the sealing tape and tighten it. However, since the tightening force of the fixing tape mainly comes from the spring, the tightening force cannot be guaranteed, and material fatigue will also cause the tightening force to be unstable.

[0025] In order to solve the above technical problems, the following solutions are given.

[0026] See attached Figure 1-3 As shown, a multi-channel gas controller includes: a controller body 10, a leak-proof component 1 20 and a leak-proof component 2 30.

[0027] Specifically, the anti-leakage component 1 20 is set at the air inlet end of the controller body 10, and the anti-leakage component 2 30 is set at the air outlet end of the controller body 10. The controller body 10 is connected to the air supply pipeline through the anti-leakage component 1 20 and the anti-leakage component 2 30.

[0028] In this solution, a leak-proof component 1 20 and a leak-proof component 2 30 are respectively provided at both ends of the controller body 10. Through the mutual cooperation of the two leak-proof components, the gas leak-proofness of the controller body 10 is achieved, which is double leak-proof and safer and more reliable.

[0029] See attached Figure 2 As shown, in order to facilitate understanding of the technical solution of the present application, the anti-leakage component 2 30 is further explained.

[0030] Among them, the leakage-proof component 2 30 includes a leakage-proof branch pipe 1 31, a sealing plug 1 32, a gap sealing sleeve 33, a dynamic shaft 34 and a telescopic motor 35. The top of the leakage-proof branch pipe 1 31 is open, and one side is connected to the controller body 10. The telescopic motor 35 is located at the bottom end of the leakage-proof branch pipe 1 31. The bottom end of the dynamic shaft 34 passes through the bottom end of the leakage-proof branch pipe 1 31 and is transmission-connected to the telescopic motor 35. The top end is connected to the sealing plug 1 32. The gap sealing sleeve 33 is sleeved on the dynamic shaft 34, and the bottom end is connected to the inner bottom surface of the leakage-proof branch pipe 1 31.

[0031] When in use, the open end and the bottom end of the leak-proof branch pipe 1 31 are both provided with a connecting flange a, and the telescopic motor 35 can be connected and fixed to the leak-proof branch pipe 1 31 through the connecting flange. Furthermore, the connecting flange also has an annular groove for accommodating a sealing ring, which is further sealed by the sealing ring b after being engaged.

[0032] In normal operation, the telescopic motor 35 retracts the movable shaft 34, separating the sealing plug 32 from the top opening of the leak-proof branch pipe 31 to ensure that the gas path is normal. When gas leakage occurs, the telescopic motor 35 pushes out the movable shaft 34, so that the sealing plug 32 fits with the top opening of the leak-proof branch pipe 31, closing the gas path and further preventing gas leakage.

[0033] Furthermore, the diameter of the top opening of the leak-proof branch pipe 31 is smaller than the inner diameter of the sealing plug 32 , so that the sealing plug 32 and the top opening of the leak-proof branch pipe 31 are sealed together.

[0034] When the movable shaft 34 pushes up the sealing plug 32, the sealing plug 32 can fully cooperate with the top opening of the leak-proof branch pipe 31 to achieve sealing.

[0035] Furthermore, in order to avoid air leakage between the gap sealing sleeve 33 and the dynamic shaft 34, a gap sealing structure is formed between the gap sealing sleeve 33 and the dynamic shaft 34 to ensure that there is no air leakage. The length of the gap sealing sleeve 33 is smaller than the length of the dynamic shaft 34, so that the dynamic shaft 34 has a telescopic space to move to drive the sealing plug 32 to move.

[0036] Furthermore, the signal input terminal of the telescopic motor 35 is electrically connected to the signal output terminal of the controller body 10 , and the telescopic motor 35 has a self-locking structure.

[0037] To ensure stable operation of the telescopic motor 35, its signal input is electrically connected to the signal output of the controller 10. When the controller 10 detects a decrease in gas flow rate or pressure, it sends a signal to the telescopic motor 35, which then actuates to cut off the gas flow. This self-locking mechanism ensures stable operation even in power outages.

[0038] See attached Figure 3 As shown, in order to facilitate understanding of the technical solution of the present application, the anti-leakage component 20 is further explained.

[0039] Among them, the leakage-proof component 20 includes a leakage-proof branch pipe 21, a spring rod 22 and a sealing plug 23. The top of the leakage-proof branch pipe 21 is open, and one side is connected to the controller body 10. The spring rod 22 is located in the leakage-proof branch pipe 21, the bottom end is fixed to the bottom surface of the leakage-proof branch pipe 21, and the top end is connected to the sealing plug 23. The sealing plug 23 is adapted to the top opening of the leakage-proof branch pipe 21.

[0040] When the gas flows, the gas will act on the sealing plug 23 to compress the spring rod 22 to ensure that the pipeline is normal. When the leakage prevention component 2 30 is activated, the gas path is disconnected, and the sealing plug 23 is lifted up by the spring rod 22 and seals with the top opening of the leakage prevention branch pipe 21 to further achieve sealing.

[0041] If the second sealing plug 23 is still pushed open after the second anti-leakage component 30 is actuated, it can be confirmed that there is a leakage point on the controller body 10 .

[0042] Similarly, the top opening of the second leak-proof branch pipe 21 is smaller than the inner diameter of the second sealing plug 23 , and the maximum length of the spring rod 22 is greater than the length of the second leak-proof branch pipe 21 .

[0043] The diameter of the top opening of the second leak-proof branch pipe 21 is smaller than the inner diameter of the second sealing plug 23 , so that the second sealing plug 23 and the top opening of the second leak-proof branch pipe 21 are sealed.

[0044] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same.

Claims

1. A multi-channel gas controller, characterized in that: include: A controller body (10), wherein the air inlet end of the controller body (10) is provided with a first leak-proof component (20), the air outlet end of the controller body (10) is provided with a second leak-proof component (30), and the controller body (10) is connected to the air supply pipeline via the first leak-proof component (20) and the second leak-proof component (30); The second anti-leakage component (30) comprises an anti-leakage branch pipe (31), a sealing plug (32), a gap sealing sleeve (33), a moving shaft (34) and a telescopic motor (35). The top of the anti-leakage branch pipe (31) is open, and one side is connected to the controller body (10). The telescopic motor (35) is located at the bottom of the anti-leakage branch pipe (31). The bottom of the moving shaft (34) passes through the bottom of the anti-leakage branch pipe (31) and is connected to the telescopic motor (35). The top is connected to the sealing plug (32). The gap sealing sleeve (33) is sleeved on the moving shaft (34), and the bottom is connected to the inner bottom surface of the anti-leakage branch pipe (31).

2. A multi-channel gas controller according to claim 1, characterized in that: The top opening of the leak-proof branch pipe 1 (31) is smaller than the inner diameter of the leak-proof branch pipe 1 (31), and the sealing plug 1 (32) is sealed and matched with the top opening of the leak-proof branch pipe 1 (31).

3. A multi-channel gas controller according to claim 1, characterized in that: A gap sealing structure is formed between the gap sealing sleeve (33) and the dynamic shaft (34), and the length of the gap sealing sleeve (33) is smaller than the length of the dynamic shaft (34).

4. A multi-channel gas controller according to claim 1, characterized in that: The anti-leakage component (20) comprises at least an anti-leakage branch pipe (21), a spring rod (22) and a sealing plug (23). The anti-leakage branch pipe (21) has an opening at the top and one side is connected to the controller body (10). The spring rod (22) is located in the anti-leakage branch pipe (21), with the bottom end fixed to the bottom surface of the anti-leakage branch pipe (21) and the top end connected to the sealing plug (23). The sealing plug (23) is adapted to the opening at the top end of the anti-leakage branch pipe (21).

5. A multi-channel gas controller according to claim 4, characterized in that: The top opening of the second anti-leakage branch pipe (21) is smaller than the inner diameter of the second sealing plug (23), and the maximum length of the spring rod (22) is greater than the length of the second anti-leakage branch pipe (21).

6. A multi-channel gas controller according to claim 1, characterized in that: The signal input end of the telescopic motor (35) is electrically connected to the signal output end of the controller body (10), and the telescopic motor (35) has a self-locking structure.

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