Coal mine drilling and deslagging horizontal buffer device with metering function

Abstract

The utility model discloses a coal mine drilling and deslagging horizontal buffer device with a metering function, a horizontal blowout prevention cavity is horizontally and obliquely arranged, and compared with a vertical structure, the horizontal blowout prevention cavity is more convenient to move in a limited space of a coal mine tunnel; the horizontal type blowout prevention device can automatically discharge slag according to the liquid level change condition in the horizontal type blowout prevention cavity, can automatically switch the drainage negative pressure according to the gas concentration condition in the horizontal type blowout prevention cavity, and can adapt to various drilling heights and angles due to the fact that the inclination angle of the horizontal type blowout prevention cavity is adjustable. A filtering structure is arranged in the slag removal box, after a mixture of coal slag and water enters the slag removal box, the filtering structure can keep coal slag and enable water to pass through, separation of the coal slag and the water is achieved, finally, the accumulation height of the coal slag in the filtering structure is read through a measuring rod with scales, and the volume of the coal slag can be accurately calculated. The method is not influenced by the gas concentration in the horizontal blowout prevention cavity, so that the drilling ruler is reasonably estimated, and the drilling operation efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to a slag discharge buffer device for coal mine drilling, in particular to a coal mine drilling slag discharge horizontal buffer device with a metering function, belonging to the field of hydraulic slag discharge drilling in coal mines. Background Art

[0002] 70% of mines in my country are high-gas mines or outburst mines. Gas, as a dangerous source, seriously threatens the safe production of coal mines. Coal seam gas extraction is a fundamental technology to solve gas disasters in mines. Correspondingly, the construction of gas extraction drilling is a key technical link in preventing and controlling gas over-limit in high-gas coal seams and outburst coal seams. With the increasing depth of coal mining and the extension of mining layout, the gas content and pressure of coal seams are gradually increasing, and the deep structural coal is soft and broken, which leads to an increase in the number of blowholes during the construction of gas extraction drilling.

[0003] An important reason for the occurrence of the blowhole phenomenon is the poor slag discharge. During the drilling process, the crushed coal dust is easily accumulated in the hole due to the poor slag discharge, resulting in a sealing effect. When the gas in the hole accumulates to a certain pressure and is released instantly, a gas blowhole occurs. The three-phase mixture of coal slag, water and gas produced during the drilling process flows into the open space of the tunnel in a large amount in a short period of time, resulting in major safety hazards such as blowhole injuries, local gas exceeding the limit, and hole blocking and drill jamming, and seriously affecting the drilling progress. In order to ensure production safety during drilling, improve drilling efficiency, and prevent gas exceeding the limit, it is necessary to ensure timely and smooth slag discharge during drilling. At the same time, considering the unpredictability and serious consequences of the blowhole phenomenon, it is necessary to set up an anti-blowhole device to efficiently separate the ejected coal slag, water and gas multiphase mixture. The separated gas enters the gas extraction pipeline, and the coal slag and water are efficiently discharged into the slag removal box.

[0004] In order to achieve smooth slag discharge in soft coal seams prone to blowout and prevent blowout at the same time, the patent publication number is: CN 115749922A, and the name is an invention patent for a method for preventing slag discharge and blocking in drilling holes in soft coal seams prone to blowout. It discloses the comprehensive use of a gas concentration monitoring device and a weighing sensing device to determine whether the blowout phenomenon occurs or not; when blowout does not occur, the slag discharge speed is reasonably controlled by opening the slag discharge valve at a fixed time. When the comprehensive judgment result shows that the blowout phenomenon occurs, the theoretical slag discharge speed can be automatically calculated through real-time monitoring data, thereby achieving rapid slag discharge and preventing a large amount of blowout gas from being released into the open space.

[0005] However, this method has the following defects: (1) The amount of coal ash it can store is small, and the height of the matching slag removal box is small, resulting in a small volume of the slag removal box, which requires frequent dumping, increasing the workload of workers and making it impossible to adapt to the high discharge holes of more than 1.5m constructed in the bottom extraction tunnel; (2) The vertical structure it adopts is inconvenient to move in the tunnel and is not easy to carry; (3) The weighing sensor device it uses is significantly affected by the methane concentration in the cavity, so it cannot accurately measure the slag discharge volume, and thus cannot accurately reflect the drilling footage. Summary of the invention

[0006] In view of the problems existing in the above-mentioned prior art, the utility model provides a horizontal buffer device for coal mine drilling and slag discharge with a metering function, which can effectively solve the above-mentioned technical problems.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is: a horizontal buffer device for coal mine drilling and slag removal with metering function, including a base, an explosion-proof control chassis, a horizontal blowout prevention cavity, a multifunctional gas monitoring and exhaust box and a slag removal box;

[0008] The horizontal blowout prevention chamber is an inclined cylindrical tank body, which is mounted on a base through a bracket, and a coal slag inlet and a gas inlet are provided at the higher end of the horizontal blowout prevention chamber. The coal slag inlet is used to transport the coal slag and water mixture discharged from the borehole during the drilling process into the horizontal blowout prevention chamber, and the gas inlet is used to transport the gas mixed gas discharged from the borehole during the drilling process into the horizontal blowout prevention chamber; a slag discharge outlet is provided at the lower end of the horizontal blowout prevention chamber, and the slag discharge outlet is located above the slag removal box, which is used to discharge the coal slag and water mixture in the horizontal blowout prevention chamber into the slag removal box; the multifunctional gas monitoring and exhaust box is installed on the top of the horizontal blowout prevention chamber, and the two are connected by a through hole, so that the gas mixed gas in the horizontal blowout prevention chamber is transported to the multifunctional gas monitoring and exhaust box; the multifunctional gas monitoring and exhaust box is equipped with a liquid level sensor and a methane concentration sensor, the liquid level sensor monitors the liquid level of the coal slag and water mixture in the horizontal blowout prevention chamber through a through hole; the methane concentration sensor is used to monitor the real-time gas concentration in the multifunctional gas monitoring and extraction box; the multifunctional gas monitoring and extraction box is connected to the low-negative pressure gas extraction pipeline and the high-negative pressure gas extraction pipeline through a tee, respectively, to extract the gas mixture in the multifunctional gas monitoring and extraction box; a solenoid valve 1 is installed between the multifunctional gas monitoring and extraction box and the low-negative pressure gas extraction pipeline, and a solenoid valve 2 is installed between the multifunctional gas monitoring and extraction box and the high-negative pressure gas extraction pipeline, and the solenoid valve 1 and the solenoid valve 2 are respectively used to control the on-off of the multifunctional gas monitoring and extraction box and the low-negative pressure gas extraction pipeline and the high-negative pressure gas extraction pipeline; a solenoid valve 3 is installed at the slag outlet to control the on-off of the slag outlet and the slag removal box;

[0009] The explosion-proof control chassis is respectively connected to the solenoid valve 1, the solenoid valve 2, the solenoid valve 3, the liquid level sensor and the methane concentration sensor, and is used to receive the monitoring data fed back by the liquid level sensor and the methane concentration sensor, and judge whether the spray hole occurs according to the monitoring data, and then control the opening and closing of the solenoid valve 3 according to the monitoring data fed back by the liquid level sensor, and control the opening and closing of the solenoid valve 1 and the solenoid valve 2 according to the monitoring data fed back by the methane concentration sensor;

[0010] The slag removal box includes a box body, a filtering structure and a measuring rod. The upper part of the box body is open, and the filtering structure is located in the middle of the box body. When the mixture of coal slag and water enters the box body, water passes through to the bottom of the box body, and the coal slag remains in the filtering structure. The measuring rod is installed in the filtering structure and is used to measure the height of the coal slag in the filtering structure.

[0011] Furthermore, the filtering structure is a rectangular parallelepiped steel wire screen with an opening at the top, and the opening is the same size as the opening of the box.

[0012] Furthermore, the length, width and height of the rectangular wire mesh are 0.5m, 0.5m and 2.0m respectively, and the mesh aperture is 4mm; the measuring rod is engraved with scale values, and the maximum range is 50cm. Such parameters facilitate the subsequent calculation of the volume of the coal slag.

[0013] Furthermore, the base and the bottom of the slag removal box are both provided with a plurality of movable rollers, so as to facilitate the movement of the base and the slag removal box.

[0014] Furthermore, the movable roller is a universal wheel, and the universal wheel is equipped with a locking mechanism for controlling the rolling or stopping of the universal wheel; the universal wheel is used to facilitate the movement of the entire device, and the locking mechanism is used to position the device after reaching the specified position.

[0015] Furthermore, the explosion-proof control chassis is provided with a PLC controller and an explosion-proof power supply, and the explosion-proof power supply supplies power to the PLC controller, solenoid valve 1, solenoid valve 2, solenoid valve 3, a liquid level sensor and a methane concentration sensor.

[0016] Furthermore, the bracket is two telescopic rods with adjustable heights, the maximum height of the telescopic rods is 1.8m and the minimum height is 0.9m, which are used to adjust the inclination angle of the horizontal blowout prevention cavity to a maximum inclination angle of 45°. In this way, the best inclination angle of the horizontal blowout prevention cavity can be matched according to needs.

[0017] Furthermore, the slag removal box is provided with a push-pull rod for moving the slag removal box.

[0018] Compared with the prior art, the utility model adopts a combination of a base, an explosion-proof control cabinet, a horizontal blowout prevention chamber, a multifunctional gas monitoring and exhaust box and a slag removal box, and has the following advantages:

[0019] 1. The horizontal blowout prevention chamber of the utility model is arranged horizontally and tilted, and the horizontal blowout prevention chamber is installed on a base with a movable function. Compared with the vertical structure, it is more convenient to move in the confined space of the coal mine tunnel; the inclined horizontal structure increases the storage space of water coal slag, reduces the number of slag discharges, and improves the reliability of the equipment; and it can automatically discharge slag according to the changes in the liquid level in the horizontal blowout prevention chamber, and can automatically switch the extraction negative pressure according to the gas concentration in the horizontal blowout prevention chamber. In addition, the inclination angle of the horizontal blowout prevention chamber is adjustable, so that it can adapt to a variety of drilling heights and angles, expanding the application scenarios of the blowout prevention hole equipment.

[0020] 2. A filtering structure is provided in the slag removal box of the utility model. When the mixture of coal slag and water enters the slag removal box, the filtering structure can retain the coal slag and allow water to pass through, thereby separating the coal slag from water. Finally, the coal slag accumulation height in the filtering structure is read by a graduated measuring rod, and the volume of the coal slag can be calculated more accurately. This method is not affected by the gas concentration in the horizontal blowout prevention chamber, thereby reasonably estimating the drilling footage and effectively improving the drilling operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 yes Figure 1 Schematic diagram of the structure of the mid-horizontal blowout preventer chamber.

[0023] In the figure: 1-coal seam, 2-four-way pipe, 3-flange, 4-flexible sealing hose, 5-explosion-proof control box, 6-base, 7-universal wheel, 8-bracket, 9-horizontal blowout prevention chamber, 9-1-gas inlet, 9-2-slag inlet, 9-3-slag outlet, 10-multi-function gas monitoring and extraction box, 11-slag removal box, 12-measuring rod, 13-push-pull rod, 14-low negative pressure gas extraction pipeline, 15-high negative pressure gas extraction pipeline, 16-liquid level sensor, 17-methane concentration sensor, 18-solenoid valve one, 19-solenoid valve two, 20-solenoid valve three. DETAILED DESCRIPTION

[0024] The utility model will be further described below.

[0025] like Figure 1 As shown, the utility model includes a base 6, an explosion-proof control box 5, a horizontal anti-blowout chamber 9, a multifunctional gas monitoring and exhaust box 10 and a slag removal box 11;

[0026] like Figure 2As shown, the horizontal blowout prevention chamber 9 is a cylindrical tank body arranged obliquely, and the horizontal blowout prevention chamber 9 is mounted on the base 6 through a bracket 8. A cinder inlet 9-2 and a gas inlet 9-3 are provided at a higher end of the horizontal blowout prevention chamber 9. The cinder inlet 9-2 is used to transport the mixture of cinder and water discharged from the borehole during the drilling process into the horizontal blowout prevention chamber 9, and the gas inlet 9-2 is used to transport the gas mixed gas discharged from the borehole during the drilling process into the horizontal blowout prevention chamber 9; the horizontal blowout prevention chamber A slag discharge outlet 9-3 is provided at the lower end of 9, and the slag discharge outlet 9-3 is located above the slag removal box 11, which is used to discharge the coal slag and water mixture in the horizontal blowout prevention cavity 9 to the slag removal box 11; the multifunctional gas monitoring and exhaust box 10 is installed on the top of the horizontal blowout prevention cavity 9, and the two are connected through a through hole, so that the gas mixture in the horizontal blowout prevention cavity 9 is transported to the multifunctional gas monitoring and exhaust box 10; the multifunctional gas monitoring and exhaust box 10 is equipped with a liquid level sensor 16 and a methane concentration sensor 17, and the liquid level sensor 16 monitors the liquid level of the coal slag and water mixture in the horizontal blowout prevention cavity 9 through the through hole; the methane concentration sensor 17 is used to monitor the real-time gas concentration in the multifunctional gas monitoring and exhaust box 10; the multifunctional gas monitoring and exhaust box 10 is connected to the low negative pressure gas extraction pipeline 14 and the high negative pressure gas extraction pipeline 15 through a three-way connection, respectively, to extract the gas mixture in the multifunctional gas monitoring and exhaust box 10; the multifunctional gas monitoring and exhaust A solenoid valve 18 is installed between the box 10 and the low-negative-pressure gas extraction pipeline 14, and a solenoid valve 2 19 is installed between the multifunctional gas monitoring and extraction box 10 and the high-negative-pressure gas extraction pipeline 15. The solenoid valve 18 and the solenoid valve 2 19 are used to control the on-off of the multifunctional gas monitoring and extraction box 10 and the low-negative-pressure gas extraction pipeline 14 and the high-negative-pressure gas extraction pipeline 15 respectively; a solenoid valve 3 20 is installed at the slag discharge outlet 9-3 to control the on-off of the slag discharge outlet 9-3 and the slag removal box 11;

[0027] The explosion-proof control chassis 5 is respectively connected to the solenoid valve 18, the solenoid valve 2 19, the solenoid valve 3 20, the liquid level sensor 16 and the methane concentration sensor 17, and is used to receive the monitoring data fed back by the liquid level sensor 16 and the methane concentration sensor 17, and judge whether the spray hole occurs according to the monitoring data, and then control the opening and closing of the solenoid valve 3 20 according to the monitoring data fed back by the liquid level sensor 16, and control the opening and closing of the solenoid valve 18 and the solenoid valve 2 19 according to the monitoring data fed back by the methane concentration sensor 17; the explosion-proof control chassis 5 is provided with a PLC controller and an explosion-proof power supply, and the explosion-proof power supply supplies power to the PLC controller, the solenoid valve 18, the solenoid valve 2 19, the solenoid valve 3 20, the liquid level sensor 16 and the methane concentration sensor 17.

[0028] The slag removal box 11 includes a box body, a filtering structure and a measuring rod 12. The upper part of the box body is open, and the filtering structure is in the middle of the box body. When the mixture of coal slag and water enters the box body, water passes through to the bottom of the box body, and the coal slag remains in the filtering structure. The measuring rod 12 is installed in the filtering structure and is used to measure the height of the coal slag in the filtering structure. The base 6 and the bottom of the slag removal box 11 are both equipped with a plurality of movable rollers. The movable rollers are provided to facilitate the movement of the base 6 and the slag removal box 11. The movable rollers are universal wheels 7, and the universal wheels 7 are all equipped with locking mechanisms for controlling the universal wheels 7 to roll or stop. The universal wheels 7 are used to facilitate the movement of the entire device, and the locking mechanism is used to position the device after reaching the specified position. The slag removal box 11 is equipped with a push-pull rod 13 for moving the slag removal box 11.

[0029] As an improvement of the utility model, the filtering structure is a rectangular wire screen, the upper part of the wire screen is open, and the opening is the same size as the opening of the box; the length, width and height of the rectangular wire screen are 0.5m, 0.5m and 2.0m respectively, and the aperture of the screen is 4mm; the measuring rod 12 is engraved with scale values, and the maximum range is 50cm. Such parameters are convenient for subsequent calculation of the volume of coal slag.

[0030] As another improvement of the utility model, the bracket 8 is two telescopic rods with adjustable heights, the maximum height of the telescopic rods is 1.8m and the minimum height is 0.9m, which are used to adjust the inclination angle of the horizontal blowout prevention cavity 9 so that its maximum inclination angle is 45°. In this way, the best inclination angle of the horizontal blowout prevention cavity can be matched according to needs.

[0031] The above-mentioned explosion-proof control chassis 5, solenoid valve 1 18, solenoid valve 2 19, solenoid valve 3 20, liquid level sensor 16 and methane concentration sensor 17 are all existing equipment or components and can be directly purchased on the market; the PLC controller in the explosion-proof control chassis 5 receives the monitoring data of the liquid level sensor 16 and the methane concentration sensor 17 and performs analysis and processing, which is a threshold comparison process performed by the existing program, and the opening and closing of the solenoid valve 18, the solenoid valve 2 19 and the solenoid valve 3 20 are also realized by the control of the existing program instructions.

[0032] Before use, the utility model is first moved to the vicinity of the desired drilling position, and then the assembly connection is completed, and then one end of the four-way pipe 2 is pushed into the coal seam 1 according to the angle and direction of the gas pre-extraction drilling design using a drilling rig, and the other end of the four-way pipe 2, the slag discharge port and the gas discharge port are located outside the borehole, and the flange 3 and the flexible sealing hose 4 are used to connect the slag discharge port and the gas discharge port of the four-way pipe 2 to the coal slag inlet 9-2 and the gas inlet 9-1 of the horizontal blowout prevention cavity 9, respectively, and the liquid level threshold and the methane concentration threshold are set in the PLC controller of the explosion-proof control box 5;

[0033] Drilling work begins, and the drill rod of the drilling rig drills into the coal seam 1 through the four-way pipe 2. The water coal slag and gas generated during the drilling process of the drilling rig enter the horizontal blowout prevention chamber 9 through the slag discharge port and gas discharge port of the four-way pipe 2 respectively; the methane concentration sensor 16 and the liquid level sensor 17 respectively monitor the gas concentration in the multifunctional gas monitoring and extraction box 10 and the liquid level in the horizontal blowout prevention chamber and feed back to the PLC controller, and the PLC controller compares the feedback data with the set threshold value. If both exceed the threshold value, it means that no blowout has occurred. At this time, the solenoid valve 18 is kept in the open state, the solenoid valve 2 19 and the solenoid valve 3 20 are kept in the closed state, and the horizontal blowout prevention chamber 9 is connected to the low negative pressure extraction pipeline 14, and the gas generated during the drilling process is continuously extracted through the low negative pressure extraction pipeline 14; when the liquid level value monitored by the liquid level sensor 16 exceeds the set liquid level threshold, it means that a large amount of coal slag and water mixture is stored in the horizontal blowout prevention chamber 9. At this time, the PLC controller controls the solenoid valve 3 2 0 is opened, so that the mixture of coal slag and water is discharged into the slag removal box 11 through the slag discharge outlet 9-3. When the mixture of coal slag and water enters the box, the filtering structure allows water to pass through to the bottom of the box, and the coal slag remains in the filtering structure until the real-time liquid level value is lower than the set threshold value, and the PLC controller controls the solenoid valve three 20 to close and stop slag discharge; at this time, the slag removal box 20 can be shaken to make the coal slag in the filtering structure evenly distributed, and the operator measures the height of the coal slag in the filtering structure through the measuring rod 12. Since the bottom area of ​​the filtering structure is known, the volume of the coal slag in the filtering structure can be calculated, so as to estimate the coal slag and reversely calculate the drilling footage; if the methane concentration of the methane concentration sensor 17 is higher than the set threshold value, the PLC controller determines that a blowout phenomenon occurs. At this time, the PLC controller controls the solenoid valve one 18 to close, and at the same time the solenoid valve two 19, so that the horizontal blowout prevention chamber 9 is connected to the high negative pressure extraction pipeline 15, and the high-pressure gas in the horizontal blowout prevention chamber 9 is quickly extracted to achieve the effect of blowout protection.

[0034] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A horizontal buffer device for coal mine drilling and slag removal with metering function, characterized in that: It includes a base, an explosion-proof control box, a horizontal blowout prevention chamber, a multifunctional gas monitoring and extraction box and a slag removal box; The horizontal blowout prevention chamber is an inclined cylindrical tank body, which is mounted on a base through a bracket, and a coal slag inlet and a gas inlet are provided at the higher end of the horizontal blowout prevention chamber. The coal slag inlet is used to transport the coal slag and water mixture discharged from the borehole during the drilling process into the horizontal blowout prevention chamber, and the gas inlet is used to transport the gas mixed gas discharged from the borehole during the drilling process into the horizontal blowout prevention chamber; a slag discharge outlet is provided at the lower end of the horizontal blowout prevention chamber, and the slag discharge outlet is located above the slag removal box, which is used to discharge the coal slag and water mixture in the horizontal blowout prevention chamber into the slag removal box; the multifunctional gas monitoring and exhaust box is installed on the top of the horizontal blowout prevention chamber, and the two are connected by a through hole, so that the gas mixed gas in the horizontal blowout prevention chamber is transported to the multifunctional gas monitoring and exhaust box; the multifunctional gas monitoring and exhaust box is equipped with a liquid level sensor and a methane concentration sensor, the liquid level sensor monitors the liquid level of the coal slag and water mixture in the horizontal blowout prevention chamber through a through hole; the methane concentration sensor is used to monitor the real-time gas concentration in the multifunctional gas monitoring and extraction box; the multifunctional gas monitoring and extraction box is connected to the low-negative pressure gas extraction pipeline and the high-negative pressure gas extraction pipeline through a tee, respectively, to extract the gas mixture in the multifunctional gas monitoring and extraction box; a solenoid valve 1 is installed between the multifunctional gas monitoring and extraction box and the low-negative pressure gas extraction pipeline, and a solenoid valve 2 is installed between the multifunctional gas monitoring and extraction box and the high-negative pressure gas extraction pipeline, and the solenoid valve 1 and the solenoid valve 2 are respectively used to control the on-off of the multifunctional gas monitoring and extraction box and the low-negative pressure gas extraction pipeline and the high-negative pressure gas extraction pipeline; a solenoid valve 3 is installed at the slag outlet to control the on-off of the slag outlet and the slag removal box; The explosion-proof control chassis is respectively connected to the solenoid valve 1, the solenoid valve 2, the solenoid valve 3, the liquid level sensor and the methane concentration sensor, and is used to receive the monitoring data fed back by the liquid level sensor and the methane concentration sensor, and judge whether the spray hole occurs according to the monitoring data, and then control the opening and closing of the solenoid valve 3 according to the monitoring data fed back by the liquid level sensor, and control the opening and closing of the solenoid valve 1 and the solenoid valve 2 according to the monitoring data fed back by the methane concentration sensor; The slag removal box includes a box body, a filtering structure and a measuring rod. The upper part of the box body is open, and the filtering structure is located in the middle of the box body. When the mixture of coal slag and water enters the box body, water passes through to the bottom of the box body, and the coal slag remains in the filtering structure. The measuring rod is installed in the filtering structure and is used to measure the height of the coal slag in the filtering structure.

2. The horizontal buffer device for coal mine drilling and slag removal with metering function according to claim 1 is characterized in that: The filtering structure is a rectangular parallelepiped steel wire screen with an opening at the top, and the opening is the same size as the opening of the box body.

3. The horizontal buffer device for coal mine drilling and slag removal with metering function according to claim 2 is characterized in that: The length, width and height of the rectangular wire screen are 0.5m, 0.5m and 2.0m respectively, and the aperture of the screen is 4mm; the measuring rod is engraved with scale values, and the maximum measuring range is 50cm.

4. The horizontal buffer device for coal mine drilling and slag removal with metering function according to claim 1 is characterized in that: The base and the bottom of the slag removal box are both equipped with a plurality of movable rollers.

5. The horizontal buffer device for coal mine drilling and slag removal with metering function according to claim 4 is characterized in that: The movable roller is a universal wheel, and a locking mechanism is installed on the universal wheel to control the rolling or stopping of the universal wheel.

6. The horizontal buffer device for coal mine drilling and slag removal with metering function according to claim 1 is characterized in that: The explosion-proof control box is provided with a PLC controller and an explosion-proof power supply, and the explosion-proof power supply supplies power to the PLC controller, solenoid valve 1, solenoid valve 2, solenoid valve 3, a liquid level sensor and a methane concentration sensor.

7. The horizontal buffer device for coal mine drilling and slag removal with metering function according to claim 1 is characterized in that: The brackets are two telescopic rods with adjustable heights, the maximum height of the telescopic rods is 1.8m and the minimum height is 0.9m, and are used to adjust the inclination angle of the horizontal blowout prevention cavity to a maximum inclination angle of 45°.

8. The horizontal buffer device for coal mine drilling and slag removal with metering function according to claim 1 is characterized in that: The slag removal box is provided with a push-pull rod for moving the slag removal box.

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