Underground coal mine harmful gas monitoring and early warning device

Abstract

The utility model relates to the field of harmful gas monitoring, and discloses a coal mine underground harmful gas monitoring and early warning device which comprises a mounting support, a gas monitoring box is arranged on the front side of the mounting support, and a plurality of gas circulation holes are formed in the left side and the right side of the gas monitoring box respectively. A sealing box cover is fixedly installed on the front side of the gas monitoring box through arranged bolts, a user pushes an L-shaped push rod, so that the gas monitoring box is driven by a U-shaped base and moving rollers to slide on a mounting support, and therefore the gas monitoring box can conveniently move in a coal mine well; at the moment, gas in the coal mine well enters the gas monitoring box through a gas circulating hole, and different harmful gases in the coal mine well are conveniently monitored through a plurality of gas monitoring sensors; at the moment, the gas monitoring sensor feeds back a voltage signal to the audible and visual alarm, and the audible and visual alarm gives an alarm after receiving the signal so as to remind surrounding people to stop advancing and evacuate in time.

Description

Technical Field

[0001] The present application belongs to the technical field of harmful gas monitoring, and specifically relates to a harmful gas monitoring and early warning device in underground coal mines. Background Art

[0002] Harmful gas monitoring and early warning in underground coal mines refers to monitoring harmful gases in the air underground in coal mines and issuing early warnings through alarms to protect the lives of miners. There are many harmful gases in underground coal mines, such as methane, carbon monoxide, hydrogen sulfide, etc. If these gases exceed a certain concentration, they will pose a threat to the health of miners and even cause accidents such as explosions and poisoning. The traditional method of underground harmful gas monitoring mainly relies on miners to use portable gas detectors for detection, but this method has problems such as insufficient manpower, low detection accuracy, and high time cost.

[0003] For example, the utility model patent with announcement number CN217033847U discloses a harmful gas monitoring and early warning device for underground coal mines, including a main body, a protective shell connected to the outside of the main body, a connecting spring fixedly connected between the protective shell and the main body, a mounting seat fixedly connected to the outer end of the main body, a monitoring box embedded in the interior of the main body, a mounting frame fixedly connected to the outer end of the monitoring box, a first guide fan and a second guide fan fixedly connected to both sides of the monitoring box, a first early warning device and a second early warning device embedded in the monitoring box, and a monitoring cavity fixedly opened inside the monitoring box. When the sealing layer is embedded in the monitoring cavity, the sealing strip is used to enhance the sealing effect of the sealing layer on the monitoring cavity, and the top of the monitoring cavity is sealed by the sealing layer to avoid leakage of the gas to be detected and maintain accurate detection results. After the gas is detected, when it is discharged to the outside, it is simply purified and filtered through the filter layer.

[0004] However, the device is fixed on the wall or other flat position of the external monitoring area through a mounting base and can only detect the gas in a fixed area. It is not possible to carry and move the personnel underground in the coal mine to perform real-time detection of the gas in the surrounding area. Therefore, a harmful gas monitoring and early warning device for underground coal mines is provided. Utility Model Content

[0005] The purpose of this application is to provide a harmful gas monitoring and early warning device in coal mines in order to solve the above-mentioned problems.

[0006] The technical solution adopted in the present application is as follows: A harmful gas monitoring and early warning device for underground coal mines, comprising a mounting bracket, a gas monitoring box is arranged on the front side of the mounting bracket, a plurality of gas circulation holes are respectively opened on the left and right sides of the gas monitoring box, a sealed box cover is fixedly installed on the front side of the gas monitoring box by means of arranged bolts, a protective shell is fixedly installed on the front side of the sealed box cover, a monitoring mechanism extending to the interior of the gas monitoring box is arranged inside the protective shell, a U-shaped groove is respectively opened on the top and bottom surfaces of the mounting bracket, two mounting plates are fixedly installed on the rear side of the gas monitoring box, and a U-shaped seat is fixedly installed on the sides of the two mounting plates close to each other, the U-shaped seat is located inside the U-shaped groove, a movable roller is rotatably connected inside the U-shaped seat, and an L-shaped push rod is fixedly installed on the side of the gas monitoring box.

[0007] In a preferred embodiment, the monitoring mechanism includes a gas monitoring sensor, an audible and visual alarm and a control panel; the front side of the sealed box cover is located inside the protective shell and a plurality of gas monitoring sensors are fixedly installed thereon, and the monitoring ends of the plurality of gas monitoring sensors all penetrate the front side of the sealed box cover and extend into the interior of the gas monitoring box; a audible and visual alarm is fixedly installed on the top surface of the gas monitoring box; a control panel is fixedly installed on the front side of the protective shell; and the gas monitoring sensor, the audible and visual alarm and the control panel are electrically connected.

[0008] In a preferred embodiment, fixing plates are fixedly installed on the left and right sides of the gas monitoring box, respectively, and fixing bolts are threadedly connected to the front sides of the fixing plates.

[0009] In a preferred embodiment, a stopper is fixedly installed inside the U-shaped groove near the end of the mounting bracket.

[0010] In a preferred embodiment, an L-shaped mounting plate is fixedly mounted on the rear side of the mounting bracket, and a through hole is formed on one side of the L-shaped mounting plate.

[0011] In a preferred embodiment, a ventilation grille is fixedly mounted on a side of the protective shell.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of this application are:

[0013] 1. In the present application, due to the adoption of the above-mentioned scheme, the user first fixes the mounting bracket on the inner wall of the coal mine shaft through the L-shaped mounting plate and bolts. When the personnel enter the coal mine shaft, the personnel push the L-shaped push rod to make the gas monitoring box slide on the mounting bracket driven by the U-shaped seat and the moving roller, thereby facilitating the movement of the gas monitoring box in the coal mine shaft. When the gas monitoring box moves, the internal gas of the coal mine shaft enters the gas monitoring box through the gas circulation hole. At this time, multiple gas monitoring sensors are set up to facilitate the monitoring of different harmful gases in the coal mine shaft. When harmful gases When it exceeds the set value, the gas monitoring sensor feeds back a voltage signal to the sound and light alarm and the control panel. The sound and light alarm issues an alarm after receiving the signal, so as to remind the surrounding personnel to stop moving and evacuate in time. The control panel displays the data on the display screen after receiving the signal, so that personnel can observe the excessive value of harmful gas. The device has a simple structure and is easy to operate. It can be fixed at a designated position inside a coal mine to monitor and warn of harmful gases. At the same time, it is also convenient for personnel to carry and move it inside the coal mine to monitor and warn of harmful gases, thereby improving the convenience of harmful gas monitoring inside the coal mine. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of this application;

[0015] Figure 2 This is a schematic diagram of the mounting plate structure of this application;

[0016] Figure 3 It is a partial structural exploded schematic diagram of the present application;

[0017] Figure 4 For this application Figure 2 Enlarged structural diagram at A in the middle.

[0018] Markings in the figure: 1. Mounting bracket; 2. Gas monitoring box; 3. Gas flow hole; 4. Sealed box cover; 5. Protective shell; 6. Monitoring mechanism; 7. U-shaped groove; 8. Mounting plate; 9. U-shaped seat; 10. Moving roller; 11. L-shaped push rod; 12. Gas monitoring sensor; 13. Sound and light alarm; 14. Control panel; 15. Fixing plate; 16. Fixing bolt; 17. Block; 18. L-shaped mounting plate; 19. Ventilation grille. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0020] refer to Figure 1-Figure 4 A harmful gas monitoring and early warning device for underground coal mines includes a mounting bracket 1, an L-shaped mounting plate 18 is fixedly mounted on the rear side of the mounting bracket 1, and a through hole is opened on one side of the L-shaped mounting plate 18; through the set L-shaped mounting plate 18, it is convenient for personnel to install and fix the mounting bracket 1 on the inner wall of the coal mine shaft through bolts, which is convenient for the subsequent installation of the gas monitoring and early warning device.

[0021] refer to Figure 1 , Figure 2 and Figure 3 A gas monitoring box 2 is arranged on the front side of the mounting bracket 1, and a plurality of gas circulation holes 3 are respectively opened on the left and right sides of the gas monitoring box 2. A sealed box cover 4 is fixedly installed on the front side of the gas monitoring box 2 by means of set bolts, a protective shell 5 is fixedly installed on the front side of the sealed box cover 4, a ventilation grille 19 is fixedly installed on the side of the protective shell 5, and a monitoring mechanism 6 extending to the inside of the gas monitoring box 2 is arranged inside the protective shell 5; the sealed box cover 4 is arranged to facilitate sealing of the gas monitoring box 2, the protective shell 5 is arranged to facilitate protection of the internal monitoring mechanism 6, and the gas circulation holes 3 are arranged to facilitate the underground gas in the coal mine to flow through the inside of the gas monitoring box 2, so that the monitoring mechanism 6 can monitor the flowing gas conveniently.

[0022] refer to Figure 1 , Figure 3The monitoring mechanism 6 includes a gas monitoring sensor 12, an audible and visual alarm 13 and a control panel 14. The front side of the sealed box cover 4 is located inside the protective shell 5 and is fixedly installed with multiple gas monitoring sensors 12. The monitoring ends of the multiple gas monitoring sensors 12 all penetrate the front side of the sealed box cover 4 and extend to the inside of the gas monitoring box 2. The top surface of the gas monitoring box 2 is fixedly installed with an audible and visual alarm 13, and the front side of the protective shell 5 is fixedly installed with a control panel 14. The gas monitoring sensor 12, the audible and visual alarm 13 and the control panel 14 are electrically connected; the multiple gas monitoring sensors 12 can be composed of different sensors such as gas sensors, methane sensors, carbon monoxide sensors, etc., which are convenient for monitoring different harmful gases in the coal mine. The gas inside the coal mine enters the gas monitoring box 2 through the gas circulation hole 3. At this time, through the multiple gas monitoring sensors 12 set, it is convenient to monitor the gas entering its interior When the harmful gas exceeds the set value, the gas monitoring sensor 12 feeds back a voltage signal to the sound and light alarm 13 and the control panel 14. The sound and light alarm 13 issues an alarm after receiving the signal, so as to remind the surrounding personnel to stop moving and evacuate in time. The control panel 14 displays the data on the display screen after receiving the signal, so that the personnel can observe the excessive value of harmful gas. The control panel 14 is electrically connected to the data acquisition module installed at the bottom of the gas monitoring box 2, and the monitoring data of the gas monitoring sensor 12 can be transmitted back to the terminal, so as to remind the terminal personnel to turn on the fan installed inside the air shaft to allow the gas inside the coal mine to circulate and discharge. The data of the monitoring sensor 12 can be transmitted wirelessly through a wireless receiver or through a wire. The specific selection can be made according to the actual debugging needs. The gas monitoring sensor 12 and the sound and light alarm 13 are equipment that can be directly purchased on the market, and no further elaboration will be made here.

[0023] refer to Figure 1 , Figure 2 and Figure 4 A U-shaped groove 7 is respectively provided on the top and bottom surfaces of the mounting bracket 1. Two mounting plates 8 are fixedly installed on the rear side of the gas monitoring box 2, and a U-shaped seat 9 is fixedly installed on the side of the two mounting plates 8 close to each other. The U-shaped seat 9 is located inside the U-shaped groove 7. A movable roller 10 is rotatably connected inside the U-shaped seat 9. An L-shaped push rod 11 is fixedly installed on the side of the gas monitoring box 2. The U-shaped seat 9 and the movable roller 10 are arranged to facilitate personnel to push the gas monitoring box 2 to move through the L-shaped push rod 11, thereby improving convenience.

[0024] refer to Figure 2 , Figure 4 The left and right sides of the gas monitoring box 2 are respectively fixedly installed with fixing plates 15, and the front side of the fixing plate 15 is threadedly connected with fixing bolts 16; the setting of the fixing plate 15 and the fixing bolts 16 facilitates the fixing of the gas monitoring box 2 moved to a suitable position.

[0025] refer to Figure 1 , Figure 2 A stopper 17 is fixedly installed inside the U-shaped groove 7 near the end of the mounting bracket 1; the stopper 17 is provided to facilitate the limiting of the U-shaped seat 9 and the movable roller 10.

[0026] The implementation principle of an embodiment of a harmful gas monitoring and early warning device in a coal mine of the present application is as follows: the user first fixes the mounting bracket 1 on the inner wall of the coal mine shaft through the L-shaped mounting plate 18 and bolts. When the user enters the coal mine, the user pushes the L-shaped push rod 11 to make the gas monitoring box 2 slide on the mounting bracket 1 driven by the U-shaped seat 9 and the moving roller 10, thereby facilitating the movement of the gas monitoring box 2 in the coal mine. When the gas monitoring box 2 moves, the gas inside the coal mine enters the gas monitoring box 2 through the gas circulation hole 3. At this time, multiple gas monitoring sensors 12 are set to facilitate monitoring of the gas entering the interior. The multiple gas monitoring sensors 12 can be composed of different sensors such as gas sensors, methane sensors, etc. , carbon monoxide sensors, etc., are convenient for monitoring different harmful gases in coal mines. When the harmful gas exceeds the set value, the gas monitoring sensor 12 feeds back a voltage signal to the sound and light alarm 13 and the control panel 14. The sound and light alarm 13 sends out an alarm after receiving the signal, so as to remind the surrounding personnel to stop moving and evacuate in time. The control panel 14 displays the data on the display screen after receiving the signal, so that personnel can observe the excessive value of harmful gas. The device has a simple structure and convenient operation. It can be fixed at a designated position inside a coal mine to monitor and warn of harmful gases. At the same time, it is also convenient for personnel to carry and move it inside the coal mine to monitor and warn of harmful gases, thereby improving the convenience of harmful gas monitoring inside the coal mine and having good overall practicality.

[0027] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A harmful gas monitoring and early warning device for underground coal mines, comprising a mounting bracket (1), characterized in that: A gas monitoring box (2) is arranged on the front side of the mounting bracket (1), and a plurality of gas flow holes (3) are respectively provided on the left and right sides of the gas monitoring box (2). A sealed box cover (4) is fixedly installed on the front side of the gas monitoring box (2) by means of bolts, and a protective shell (5) is fixedly installed on the front side of the sealed box cover (4). A monitoring mechanism (6) extending into the interior of the gas monitoring box (2) is arranged inside the protective shell (5). U-shaped grooves (7) are respectively provided on the top and bottom surfaces of the mounting bracket (1). Two mounting plates (8) are fixedly installed on the rear side of the gas monitoring box (2), and a U-shaped seat (9) is fixedly installed on the sides of the two mounting plates (8) close to each other. The U-shaped seat (9) is located inside the U-shaped groove (7), and a movable roller (10) is rotatably connected inside the U-shaped seat (9). An L-shaped push rod (11) is fixedly installed on the side of the gas monitoring box (2).

2. A coal mine underground harmful gas monitoring and early warning device as claimed in claim 1, characterized in that: The monitoring mechanism (6) comprises a gas monitoring sensor (12), an audible and visual alarm (13) and a control panel (14); the front side of the sealed box cover (4) is located inside the protective shell (5) and is fixedly mounted with a plurality of gas monitoring sensors (12); the monitoring ends of the plurality of gas monitoring sensors (12) all penetrate the front side of the sealed box cover (4) and extend to the inside of the gas monitoring box (2); the top surface of the gas monitoring box (2) is fixedly mounted with an audible and visual alarm (13); the front side of the protective shell (5) is fixedly mounted with a control panel (14); and the gas monitoring sensor (12), the audible and visual alarm (13) and the control panel (14) are electrically connected.

3. The device for monitoring and early warning harmful gases in underground coal mines according to claim 1, characterized in that: A fixing plate (15) is fixedly mounted on the left and right sides of the gas monitoring box (2), respectively, and a fixing bolt (16) is threadedly connected to the front side of the fixing plate (15).

4. A coal mine underground harmful gas monitoring and early warning device as claimed in claim 1, characterized in that: A stopper (17) is fixedly mounted inside the U-shaped groove (7) near the end of the mounting bracket (1).

5. The device for monitoring and early warning harmful gases in underground coal mines according to claim 1, characterized in that: An L-shaped mounting plate (18) is fixedly mounted on the rear side of the mounting bracket (1), and a through hole is formed on one side of the L-shaped mounting plate (18).

6. A coal mine underground harmful gas monitoring and early warning device as claimed in claim 1, characterized in that: A ventilation grille (19) is fixedly mounted on the side of the protective shell (5).

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