Mixed gas concentration alarm device

Abstract

The utility model discloses a mixed gas concentration alarm device, which comprises a mixed gas concentration alarm main body, a connecting sleeve is arranged on the mixed gas concentration alarm main body, a tightening screw rod is inserted into the top side of the connecting sleeve, one end of the tightening screw rod is positioned on one side of an anticorrosive coating at the top of a sealing ring, and the other end of the tightening screw rod is positioned on the other side of the anticorrosive coating. A gas supply pipe is arranged at the lower end of the mixed gas concentration alarm body, a detection port is formed in the top end of the gas supply pipe, a mounting seat is arranged on the outer wall of the detection port, a fixing assembly is arranged on the mounting seat, one end of the detection port is inserted into a connecting sleeve, and a sealing assembly is arranged in the connecting sleeve; the sealing assembly comprises a sealing ring slidably connected with the connecting sleeve, the upper end and the lower end of the sealing ring are each provided with an anti-corrosion layer, and the anti-corrosion layer at the bottom of the sealing ring is attached to the top of the detection opening. According to the device, the corrosion resistance of the sealing ring is improved while the sealing performance is ensured, so that the problem of leakage in the using process of the device is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of gas concentration alarms, in particular to a mixed gas concentration alarm device. Background Art

[0002] A gas concentration alarm is a device used to monitor the gas concentration in the environment. When the detected gas concentration reaches a preset dangerous level, it will issue an alarm to remind people to take corresponding safety measures. Such devices are widely used in industries, commercial areas, residences, public facilities, etc. to prevent fires, explosions or poisoning incidents caused by gas leakage.

[0003] A mixed gas refers to a gas containing two or more effective components. When detecting and warning the concentration of a mixed gas, a corresponding gas concentration alarm is required. Existing gas concentration alarms usually use a sealing ring to ensure the sealing performance during installation. Most of the sealing rings are made of rubber and are extremely vulnerable to corrosion when in contact with gases, which easily shortens the service life of the sealing ring and leads to leakage problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a mixed gas concentration alarm device to solve the problem of leakage caused by the corrosion of the sealing ring in the above-mentioned background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A mixed gas concentration alarm device includes a main body of a mixed gas concentration alarm. A connecting sleeve is arranged on the main body of the mixed gas concentration alarm. A gas delivery pipe is arranged at the lower end of the main body of the mixed gas concentration alarm. A detection port is opened at the top end of the gas delivery pipe. An installation seat is arranged on the outer wall of the detection port. One end of the detection port is inserted into the inside of the connecting sleeve, and a sealing component is arranged inside the connecting sleeve.

[0006] The sealing component includes a sealing ring slidably connected to the connecting sleeve. Anticorrosion layers are arranged at both the upper and lower ends of the sealing ring. The anticorrosion layer at the bottom of the sealing ring is attached to the top of the detection port.

[0007] Preferably, a tightening screw is inserted into the top side of the connecting sleeve. The tightening screw is threadedly connected to the connecting sleeve. One end of the tightening screw is located on one side of the anticorrosion layer at the top of the sealing ring.

[0008] Preferably, a fixing component is arranged on the installation seat.

[0009] The fixing component includes a limiting post fixed to the top side of the installation seat. The limiting post has a polygonal structure.

[0010] Preferably, a support spring is fixedly connected to one side of the limiting post. One end of the support spring is connected to a clamping block.

[0011] Preferably, a through hole is formed in the bottom side of the connecting sleeve, and a clamping block is inserted into the through hole.

[0012] Preferably, the support spring, the clamping block and the limiting post are symmetrically distributed about the bisector of the mounting seat, and the clamping block is slidably connected to the connecting sleeve.

[0013] Preferably, the anti-corrosion layer is a nickel-based alloy to improve the corrosion resistance to the mixed gas.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] (1) While ensuring the sealing performance, the anti-corrosion ability of the sealing ring is improved, thereby avoiding the leakage problem of the device during use.

[0016] (2) By providing an anti-corrosion layer on the sealing ring, the inner side and the upper and lower ends of the sealing ring are covered by the anti-corrosion layer, so that the mixed gas is prevented from directly contacting the sealing ring, thereby improving the anti-corrosion ability while ensuring the elasticity of the sealing ring.

[0017] (3) By providing through holes on both sides of the bottom of the connecting sleeve, and sleeving the connecting sleeve on the outer wall of the detection port, the clamping blocks on the mounting seat outside the detection port are inserted into the through holes on both sides of the connecting sleeve, so that the rapid connection between the connecting sleeve and the detection port can be realized, and the installation efficiency of the main body of the mixed gas concentration alarm and the air supply pipe is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the mixed gas concentration alarm device of the present utility model;

[0019] Figure 2 is a sectional view of the mixed gas concentration alarm device of the present utility model;

[0020] Figure 3 is the Figure 2 enlarged view at A of the present utility model;

[0021] Figure 4 is the Figure 2 enlarged view at B of the present utility model;

[0022] Figure 5 is a sectional view of the sealing ring of the mixed gas concentration alarm device of the present utility model.

[0023] In the figure: 1, main body of the mixed gas concentration alarm; 2, air supply pipe; 3, mounting seat; 4, connecting sleeve; 5, sealing assembly; 51, tightening screw; 52, sealing ring; 53, anti-corrosion layer; 6, fixing assembly; 61, limiting post; 62, support spring; 63, clamping block; 7, detection port. Detailed implementation manners

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Please refer to Figures 1-5 , the present utility model provides a technical solution: a mixed gas concentration alarm device, including a mixed gas concentration alarm main body 1. A connecting sleeve 4 is provided on the mixed gas concentration alarm main body 1. A tightening screw rod 51 is inserted into the top side of the connecting sleeve 4. A polygonal blind hole is opened at the bottom of the connecting sleeve 4 for connecting with a limiting column 61. The tightening screw rod 51 is threadedly connected to the connecting sleeve 4. One end of the tightening screw rod 51 is located on one side of the anti-corrosion layer 53 on the top of the sealing ring 52; the anti-corrosion layer 53 is a nickel-based alloy, which improves the corrosion resistance to the mixed gas; this structure can avoid the direct contact between the sealing ring 52 and the mixed gas, and at the same time retain the elastic characteristics of the sealing ring 52, improving the service life and sealing performance of the sealing ring 52; A gas delivery pipe 2 is provided at the lower end of the mixed gas concentration alarm main body 1. A detection port 7 is opened at the top end of the gas delivery pipe 2. A mounting seat 3 is provided on the outer wall of the detection port 7. A fixing component 6 is provided on the mounting seat 3;

[0026] The fixing component 6 includes a limiting column 61 fixed to the top side of the mounting seat 3. The limiting column 61 has a polygonal structure; this structure can avoid the movement of the limiting column 61 after being connected to the limiting column 61 by setting the limiting column 61, improving the stability of the connection; One side of the limiting column 61 is fixedly connected to a support spring 62. One end of the support spring 62 is connected to a clamping block 63; A through hole is opened at the bottom side of the connecting sleeve 4, and the clamping block 63 is inserted into the through hole; The support spring 62, the clamping block 63 and the limiting column 61 are all symmetrically distributed left and right about the bisector of the mounting seat 3. The clamping block 63 is slidably connected to the connecting sleeve 4; this structure can support the clamping block 63 to be inserted into the connecting sleeve 4 through the support spring 62, realizing the stable connection between the connecting sleeve 4 and the mounting seat 3. At the same time, pressing the clamping block 63 can make the support spring 62 contract and the clamping block 63 withdraw from the inside of the connecting sleeve 4 to achieve separation; One end of the detection port 7 is inserted into the connecting sleeve 4, and a sealing component 5 is provided inside the connecting sleeve 4;

[0027] The sealing component 5 includes a sealing ring 52 slidably connected to the connecting sleeve 4. Anti-corrosion layers 53 are provided at both the upper and lower ends of the sealing ring 52. The anti-corrosion layer 53 at the bottom of the sealing ring 52 is attached to the top of the detection port 7.

[0028] Working principle: When using this mixed gas concentration alarm device, if it is necessary to install the main body 1 of the mixed gas concentration alarm, the connecting sleeve 4 at the bottom of the main body 1 of the mixed gas concentration alarm can be sleeved outside the detection port 7. Before sleeving, the sealing ring 52 is placed inside the connecting sleeve 4. When sleeving, the blind hole at the bottom of the connecting sleeve 4 is aligned with the position of the limit post 61 and the limit post 61 is smoothly inserted into the blind hole at the bottom of the connecting sleeve 4. During the insertion process, the block 63 on the outer wall of the limit post 61 is pressed so that the block 63 can smoothly enter the blind hole of the connecting sleeve 4. When the block 63 moves to the through hole of the connecting sleeve 4, it automatically pops out to the outer wall of the connecting sleeve 4 under the support of the support spring 62. After the connection between the connecting sleeve 4 and the detection port 7 is completed, the anti-corrosion layers 53 at the upper and lower ends of the sealing ring 52 are attached between the port of the connecting sleeve 4 and the detection port 7, thus ensuring the sealing performance of this device.

[0029] Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. Mixed gas concentration alarm device, including the main body (1) of the mixed gas concentration alarm, characterized in that: A connecting sleeve (4) is provided on the main body (1) of the mixed gas concentration alarm, a gas delivery pipe (2) is provided at the lower end of the main body (1) of the mixed gas concentration alarm, a detection port (7) is opened at the top end of the gas delivery pipe (2), a mounting seat (3) is provided on the outer wall of the detection port (7), one end of the detection port (7) is inserted into the inside of the connecting sleeve (4), and a sealing assembly (5) is provided inside the connecting sleeve (4); The sealing assembly (5) includes a sealing ring (52) slidably connected to the connecting sleeve (4), anti-corrosion layers (53) are provided at both the upper and lower ends of the sealing ring (52), and the anti-corrosion layer (53) at the bottom of the sealing ring (52) is attached to the top of the detection port (7).

2. The mixed gas concentration alarm device according to claim 1, wherein: A tightening screw (51) is inserted into the top side of the connecting sleeve (4), the tightening screw (51) is threadedly connected to the connecting sleeve (4), and one end of the tightening screw (51) is located on one side of the anti-corrosion layer (53) at the top of the sealing ring (52).

3. The mixed gas concentration alarm device according to claim 1, characterized in that: A fixing assembly (6) is provided on the mounting seat (3); The fixing assembly (6) includes a limiting column (61) fixed to the top side of the mounting seat (3), and the limiting column (61) has a polygonal structure.

4. The mixed gas concentration alarm device according to claim 3, wherein: A support spring (62) is fixedly connected to one side of the limiting column (61), and one end of the support spring (62) is connected to a clamping block (63).

5. The mixed gas concentration alarm device according to claim 1, characterized in that: A through hole is opened at the bottom side of the connecting sleeve (4), and the clamping block (63) is inserted into the through hole.

6. The mixed gas concentration alarm device according to claim 4, wherein: The support spring (62), the clamping block (63) and the limiting column (61) are all symmetrically distributed left and right about the bisector of the mounting seat (3), and the clamping block (63) is slidably connected to the connecting sleeve (4).

7. The mixed gas concentration alarm device according to claim 1, wherein: The anti-corrosion layer (53) is a nickel-based alloy, which improves the corrosion resistance to the mixed gas.

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