A mine methane sensor

Abstract

The utility model relates to the technical field of methane sensor, and disclose a mine methane sensor, including sensing receiving box, the bottom fixed mounting of sensing receiving box has the filter bowl, be provided with gas washing mechanism on the filter bowl, through control micro -pump gas collection, and further press fixed base, can complete sensing receiving box input end's sealing and make high pressure gas by gas collection bottle into the diffuser head, and have the diffuser head jet cleaning dust attached on the filter bowl, realize the effect that sensor receiving end gas washes, compared with the traditional brushing mode, the cleaning effect of gas wash is more, and the operation is flexible and convenient, through the air supplementing stopper to supplement methane gas in the methane bottle, further control the gas stop handle and remove the restriction to the second guide pipe, make the methane gas enter the second guide pipe and transmit to the filter bowl, if sensing receiving box does not show warning, then the sensor sensitivity is damaged, if sensing receiving box sends warning, then the sensing sensitivity is normal.

Description

Technical Field

[0001] This utility model relates to the field of methane sensor technology, specifically a methane sensor for mining. Background Technology

[0002] A mining methane sensor is a device specifically designed for safety monitoring in coal mines. It is mainly used to monitor the methane concentration underground in coal mines to ensure mine safety. It is usually installed in coal mine roadways, working faces, goaf areas, return airways, electromechanical chambers, etc. When the methane concentration exceeds the limit, it can automatically issue audible and visual alarms to ensure the safety of miners.

[0003] Chinese patent CN218412465U discloses a methane sensor suitable for mining applications. The sensor includes a sensor receiver box with a connecting strip on its rear end. A fixing sleeve is fixedly connected to the rear end of the connecting strip. A slot is formed on the side wall of the fixing sleeve. A fixing support column is located inside the fixing sleeve. Connectors are fixedly connected to both the upper and lower ends of the fixing support column. Mounting blocks are fixedly connected to the outer walls of the connecting blocks. The rear ends of two mounting blocks are fixedly connected to the same fixing piece. A slot is formed at the bottom of the outer wall of the fixing sleeve. The methane sensor for mining applications provided by this application is simple to install and easy to disassemble, facilitating use and maintenance by workers and reducing the time workers spend handling the sensor.

[0004] The aforementioned sensor offers the advantage of quick disassembly and easy maintenance. However, the installation environment of existing sensors is complex, and the sensors are easily affected by dust, leading to malfunction. Conventional brushing methods not only have poor cleaning effects but are also cumbersome. Furthermore, the sensitivity of the sensor decreases over time, requiring regular maintenance to prevent safety accidents. Therefore, a methane sensor for mining is needed. Utility Model Content

[0005] The purpose of this invention is to provide a methane sensor for mining, in order to solve the problems of existing sensors being easily clogged by dust and thus malfunctioning, as well as the difficulty in detecting sensor sensitivity.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a mining methane sensor, comprising a sensing receiver box, a filter cartridge fixedly installed at the bottom of the sensing receiver box, and a gas washing mechanism provided on the filter cartridge; the gas washing mechanism includes a gas collecting bottle and a gas dispersing head, the gas dispersing head being slidably installed inside the filter cartridge, a miniature air pump being fixedly installed at one end of the gas collecting bottle, and an air cap being slidably installed at the other end of the gas collecting bottle, a No. 1 conduit being fixedly installed between the air cap and the gas dispersing head, a fixing seat being fixedly installed at the lower part of the gas dispersing head, and a support spring being fixedly installed between the fixing seat and the filter cartridge.

[0007] Preferably, the height of the air diffuser is less than the height of the filter cartridge, and a sealing gasket is fixedly installed at one end of the air diffuser, and the input end of the sensor receiver box is adapted to the sealing gasket.

[0008] Preferably, a trapezoidal rubber block is fixedly installed at one end of the air cap, and a small hole is provided in the middle of the air cap.

[0009] Preferably, a retaining ring is fixedly installed at the lower part of the filter cartridge, and the air diffuser is located inside the filter cartridge.

[0010] Preferably, the filter cartridge is provided with a detection mechanism, which includes a slide block. The slide block is fixedly installed on one side of the sensor receiving box, and a limiting seat is slidably installed on the slide block. A methane bottle is fixedly installed on the limiting seat, and a gas stop handle is slidably installed through the methane bottle. A pressure spring is fixedly installed between the gas stop handle and the methane bottle. A second conduit is fixedly installed between the methane bottle and the gas diffuser, and a gas supply plug is threaded onto one side of the methane bottle.

[0011] Preferably, a cylindrical rubber block is fixedly installed at one end of the gas stop handle, and the second conduit is adapted to the cylindrical rubber block.

[0012] Preferably, one end of the second conduit is embedded and slidably installed inside the filter cartridge, the limiting seat is parallel to the central axis of the filter cartridge, and a vertical plate is fixedly installed on the slide and located between the limiting seats by a bolt group.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1) This is a methane sensor for mining. By controlling a micro air pump to collect gas and further pressing the fixing seat, the input end of the sensor receiver box can be sealed and high-pressure gas can be introduced from the gas collecting bottle into the gas dispersing head. The gas dispersing head sprays and cleans the dust attached to the filter cartridge, achieving the effect of air washing of the sensor receiver. Compared with the traditional brushing method, air washing has a better cleaning effect and is more flexible and convenient to operate. 2) This is a methane sensor used in mining. Methane gas is added to the methane bottle through the gas replenishment plug. The gas stop handle is then used to release the restriction on the No. 2 conduit, allowing the methane gas to enter the No. 2 conduit and be transmitted to the filter cartridge. If the sensor receiving box does not issue an alarm, it indicates that the sensor sensitivity is damaged. If the sensor receiving box issues an alarm, it indicates that the sensor sensitivity is normal. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a mining methane sensor according to an embodiment of the present invention; Figure 2 This is a cross-sectional view of the sensor in an embodiment of this utility model; Figure 3 This is a cross-sectional view of the air washing mechanism in an embodiment of the present invention. Figure 4 As an embodiment of this utility model Figure 3 Enlarged view of A in the middle; Figure 5 This is a cross-sectional view of the detection mechanism in an embodiment of the present invention. Figure 6 As an embodiment of this utility model Figure 5 Enlarged view of B in the middle.

[0015] In the diagram: 1. Sensor receiver box; 2. Filter cartridge; 3. Gas washing mechanism; 301. Gas collecting bottle; 302. Gas diffuser; 303. Miniature air pump; 304. Gas cap; 305. No. 1 conduit; 306. Fixing base; 307. Support spring; 4. Detection mechanism; 401. Sliding base; 402. Limiting seat; 403. Methane bottle; 404. Gas stop handle; 405. Pressure spring; 406. No. 2 conduit; 407. Gas replenishment plug. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0017] Combination Figures 1-4 A methane sensor for mining includes a sensor receiver box 1. A filter cartridge 2 is fixedly installed at the bottom of the sensor receiver box 1. A gas washing mechanism 3 is provided on the filter cartridge 2. The gas washing mechanism 3 includes a gas collecting bottle 301 and a gas dispersing head 302. The gas dispersing head 302 is slidably installed inside the filter cartridge 2. A miniature air pump 303 is fixedly installed at one end of the gas collecting bottle 301, and a gas cap 304 is slidably installed at the other end of the gas collecting bottle 301. A first-line conduit 305 is fixedly installed between the gas cap 304 and the gas dispersing head 302. A fixing seat 306 is fixedly installed at the lower part of the gas dispersing head 302. A support spring 307 is fixedly installed between the fixing seat 306 and the filter cartridge 2.

[0018] The height of the diffuser head 302 is less than the height of the filter cartridge 2, and a sealing gasket is fixedly installed at one end of the diffuser head 302. The input end of the sensor receiver box 1 is compatible with the sealing gasket. The function of the sealing gasket is to seal the sensor receiver box 1 when the diffuser head 302 is raised. A trapezoidal rubber block is fixedly installed at one end of the air cap 304, and a small hole is opened in the middle of the air cap 304. The function of installing the trapezoidal rubber block and opening the small hole on the air cap 304 is to install the trapezoidal rubber block when the diffuser head 302 is raised. Release the seal on the first conduit 305 and allow high-pressure gas to enter through the small hole and be transmitted to the diffuser head 302 for discharge, thereby removing the dust on the filter cartridge 2 and achieving the effect of air washing. A retaining ring is fixedly installed at the lower part of the filter cartridge 2, and the diffuser head 302 is located inside the filter cartridge 2. Without external force pushing the fixed seat 306, the diffuser head 302 moves to the lower part of the filter cartridge 2 under the action of the support spring 307. At this time, the input end of the sensor receiver box 1 is opened, while the first conduit 305 is sealed. Example 2

[0019] See Figure 5 and Figure 6 The filter cartridge 2 is provided with a detection mechanism 4, which includes a slide 401. The slide 401 is fixedly installed on one side of the sensor receiving box 1, and a limit seat 402 is slidably installed on the slide 401. A methane bottle 403 is fixedly installed on the limit seat 402. A gas stop handle 404 is slidably installed through the methane bottle 403. A pressure spring 405 is fixedly installed between the gas stop handle 404 and the methane bottle 403. A second conduit 406 is fixedly installed between the methane bottle 403 and the gas diffuser 302. A gas supply plug 407 is threadedly installed on one side of the methane bottle 403.

[0020] A cylindrical rubber block is fixedly installed at one end of the gas stop handle 404, and the second conduit 406 is adapted to the cylindrical rubber block. The function of the cylindrical rubber block is to allow the gas stop handle 404 to be embedded into the second conduit 406 under the action of the pressure spring 405, thus preventing methane gas from entering the filter cartridge 2 from the methane bottle 403 on its own, and at the same time preventing outdoor gas from entering the methane bottle 403. One end of the second conduit 406 is embedded and slidably installed inside the filter cartridge 2. The limiting seat 402 is parallel to the central axis of the filter cartridge 2, and the sliding seat 401 is located on and at the limiting seat 402. A vertical plate is fixedly installed between 02 by bolts. The methane bottle 403 is connected to the sensor receiver box 1 through the slide 401 and the limit seat 402, so that the methane bottle 403 is synchronized with the gas diffuser 302, ensuring that the gas diffuser 302 can move inside the filter cartridge 2. In use, the methane gas is replenished into the methane bottle 403 by controlling the gas replenishment plug 407 to release the sensitivity of the methane gas detection sensor. The second conduit 406 is opened by controlling the gas stop handle 404, and the methane gas enters the filter cartridge 2 through the second conduit 406.

[0021] In actual operation, by controlling the micro air pump 303 to collect air into the gas collecting bottle 301, when the fixed seat 306 is pressed to move the diffuser head 302 along the filter cartridge 2 and seal the input end of the sensor receiver box 1, the air cap 304 at one end of the first conduit 305 will release the seal on the gas collecting bottle 301, allowing high-pressure gas to enter the diffuser head 302 through the first conduit 305, and the diffuser head 302 will blow out the dust on the filter cartridge 2, achieving the effect of air washing. After the air washing is completed, the pressure on the fixed seat 306 can be stopped. Methane gas is added to the methane bottle 403 by the gas filling plug 407. The gas stop handle 404 is then used to release the restriction on the second conduit 406, allowing the methane gas to enter the second conduit 406 and be transmitted to the filter cartridge 2. If the sensor receiving box does not issue an alarm, it indicates that the sensor sensitivity is damaged. If the sensor receiving box 1 issues an alarm, it indicates that the sensor sensitivity is normal. Once the sensitivity test is completed, the gas stop handle 404 can be released.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A methane sensor for mining, comprising a sensing receiver box (1), wherein a filter cartridge (2) is fixedly mounted on the bottom of the sensing receiver box (1), characterized in that: The filter cartridge (2) is provided with an air washing mechanism (3); The gas washing mechanism (3) includes a gas collecting bottle (301) and a gas dispersing head (302). The gas dispersing head (302) is slidably installed inside the filter cartridge (2). A micro air pump (303) is fixedly installed at one end of the gas collecting bottle (301), and an air cap (304) is slidably installed at the other end of the gas collecting bottle (301). A first-line guide tube (305) is fixedly installed between the air cap (304) and the gas dispersing head (302). A fixing seat (306) is fixedly installed at the lower part of the gas dispersing head (302), and a support spring (307) is fixedly installed between the fixing seat (306) and the filter cartridge (2).

2. The methane sensor for mining according to claim 1, characterized in that: The height of the diffuser (302) is less than the height of the filter cartridge (2), and a sealing gasket is fixedly installed at one end of the diffuser (302), and the input end of the sensor receiver box (1) is adapted to the sealing gasket.

3. A mining methane sensor according to claim 1, characterized in that: A trapezoidal rubber block is fixedly installed at one end of the air cap (304), and a small hole is opened in the middle of the air cap (304).

4. A mining methane sensor according to claim 2, characterized in that: A retaining ring is fixedly installed at the lower part of the filter cartridge (2), and the air diffuser (302) is located inside the filter cartridge (2).

5. A mining methane sensor according to claim 4, characterized in that: The filter cartridge (2) is provided with a detection mechanism (4). The detection mechanism (4) includes a slide (401). The slide (401) is fixedly installed on one side of the sensor receiving box (1). A limiting seat (402) is slidably installed on the slide (401). A methane bottle (403) is fixedly installed on the limiting seat (402). A gas stop handle (404) is slidably installed through the methane bottle (403). A pressure spring (405) is fixedly installed between the gas stop handle (404) and the methane bottle (403). A second conduit (406) is fixedly installed between the methane bottle (403) and the gas diffuser (302). A gas filling plug (407) is threaded on one side of the methane bottle (403).

6. A mining methane sensor according to claim 5, characterized in that: One end of the gas stop handle (404) is fixedly installed with a cylindrical rubber block, and the second conduit (406) is adapted to the cylindrical rubber block.

7. A mining methane sensor according to claim 5, characterized in that: One end of the second conduit (406) is embedded and slidably installed inside the filter cartridge (2). The limiting seat (402) is parallel to the central axis of the filter cartridge (2). A vertical plate is fixedly installed on the slide (401) and between the limiting seats (402) by a bolt group.

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