Directional gas adjusting device for underground coal seam

Abstract

The utility model relates to the technical field of coal mining, in particular to a directional gas adjusting device for an underground coal seam. According to the technical scheme, the device comprises an air pipe, a mounting frame, a mounting pipe, a cleaning pipe and a motor, the lower end of the air pipe communicates with the mounting pipe, the outer wall of the mounting pipe is sleeved with the mounting frame, the motor is arranged at one end of the mounting frame, rotating shafts rotationally mounted in the mounting frame are arranged at the two ends of the mounting pipe, and the output end of the motor is connected with the rotating shafts; a first universal pipe and a second universal pipe are arranged in the mounting pipe, a connecting block is arranged at one end of the mounting frame, a hydraulic rod with the telescopic end connected with the connecting block is arranged on one side of the lower end of the air pipe, and a suction nozzle is arranged at the lower end of the mounting pipe. Gas generated in different areas is sucked through the air pipe which can be conveniently erected in a butt joint mode along with underground mining and the positioning structure for adjusting the angle of the suction nozzle, and then safe and convenient treatment of the gas is achieved.

Description

Technical Field

[0001] This utility model relates to the field of coal mining technology, and in particular to an underground coal seam directional gas regulation device. Background Technology

[0002] The gases released from the decomposition of organic matter in coal seams mainly include methane (gas) and carbon dioxide. During coal mining operations, gas may escape from the coal seam. Gas (mainly methane) easily forms flammable gas, and when mixed with air at appropriate concentrations, it may cause an explosion if it encounters an open flame or a high-temperature ignition source. When the gas concentration is too high, it will displace oxygen, leading to insufficient oxygen content in the air and causing a risk of asphyxiation. High concentrations of gas are harmful to the human body; inhaling excessive amounts of gas can lead to poisoning, causing dizziness, nausea, difficulty breathing, and even death.

[0003] Methane is typically extracted and transported using necessary means to reduce its concentration and minimize the risk of explosion and poisoning. This also helps maintain the stability and safety of the underground working environment. Methane regulating devices manage and control the methane present in coal mines or underground working areas, ensuring safe mine operation. However, the fixed locations of underground extraction pipelines make them difficult to adjust and adapt to the real-time methane generation in different areas. Therefore, we propose an underground coal seam directional methane regulating device to address these existing problems. Utility Model Content

[0004] The purpose of this invention is to address the problems existing in the background technology by proposing a directional gas regulation device for underground coal seams.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a directional gas regulating device for underground coal seams, comprising an air duct, a mounting frame, an installation pipe, a cleaning pipe, and a motor. The lower end of the air duct is connected to the installation pipe, and the installation frame is sleeved on the outer wall of the installation pipe. A motor is provided at one end of the installation frame, and both ends of the installation pipe are provided with rotating shafts rotatably installed inside the installation frame. The output end of the motor is connected to the rotating shafts. Universal tube one and universal tube two are provided inside the installation pipe. A connecting block is provided at one end of the installation frame. A hydraulic rod with a telescopic end connected to the connecting block is provided on one side of the lower end of the air duct, and a suction nozzle is provided at the lower end of the installation pipe.

[0006] Preferably, the duct has a maintenance port at its front end, and a closing cover that is bolted to the duct is provided at the front end of the maintenance port. A handle is provided at the front end of the closing cover. The maintenance port facilitates the cleaning of the filter screen inside the duct and the maintenance of the internal structural components. The opening and closing of the maintenance port is controlled by the closing cover, and the closing cover is gripped when opening and closing.

[0007] Preferably, a cleaning pipe is provided at the upper end of the air duct, the cleaning pipe is a T-shaped pipe, and the lower end of the cleaning pipe passes through the air duct.

[0008] Preferably, a filter screen is installed at the connection between the air duct and the installation pipe. The filter screen filters the gas drawn into the air duct, preventing dust from mixing into the gas.

[0009] Preferably, a pressure cover is provided at the upper end of the filter screen, and a sleeve is provided at the upper end of the pressure cover. A sealing ring is fitted onto the outer wall of the cleaning pipe at the inner end of the duct, and the sleeve is slidably fitted onto the outer wall of the sealing ring. The sleeve is slidably installed at the inner end of the tee pipe through the sealing ring, thereby preventing leakage of negative pressure suction at the connection between the sleeve and the inner end of the duct.

[0010] Preferably, a side ring is fitted onto the outer wall of the sleeve, and a spring fixed to the inner wall of the upper end of the duct is provided at the upper end of the side ring. A pull rod is provided on the outer wall of the sleeve. The side ring supports the spring, thereby allowing the elastic force of the spring to act on the sleeve, and a longitudinal force is applied to the sleeve by gripping the pull rod.

[0011] Preferably, flange 1 is provided at both ends of the air duct, and flange 2 is provided at both ends of the cleaning pipe. Flange 2 is used for connecting and installing the cleaning pipe at the upper end of the air duct, and flange 1 is used for connecting and installing the air duct.

[0012] Preferably, each of the four corners of one end of the duct has a positioning hole, and each of the four corners of one end of the duct has a positioning block. A bracket is provided at the upper end of the duct. During the installation of the duct, the positioning blocks are inserted into the positioning holes to position the duct during the installation process.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model involves installing ventilation ducts in underground roadways. During use, the lower end of the ventilation duct is connected through an installation pipe. The suction force generated inside the ventilation duct acts on the corresponding area to extract the generated gas. At the same time, the opening at the lower end of the installation pipe can be angled to handle gas extraction at different points in the same area. The gas extraction achieves positioning adjustment, and the ventilation duct is installed in a connected manner. During use, it can be assembled and erected along with the mining of the roadway, making it convenient and flexible to use. Attached Figure Description

[0015] Figure 1 This is a front-view three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a side view of the three-dimensional structure of the present invention;

[0017] Figure 3This is a side sectional three-dimensional structural schematic diagram of the present invention;

[0018] Figure 4 This is a side sectional three-dimensional structural diagram of the mounting pipe of this utility model;

[0019] Figure 5 This is a partial side sectional view of the three-dimensional structure of the cleaning tube of this utility model.

[0020] Attached reference numerals: 1. Duct; 2. Flange 1; 3. Positioning hole; 4. Mounting frame; 5. Suction nozzle; 6. Mounting pipe; 7. Universal pipe 1; 8. Universal pipe 2; 9. Closing cover; 10. Handle; 11. Cleaning pipe; 12. Bracket; 13. Flange 2; 14. Positioning block; 15. Hydraulic rod; 16. Connecting block; 17. Motor; 18. Shaft; 19. Filter screen; 20. Spring; 21. Sealing ring; 22. Sleeve; 23. Tie rod; 24. Pressure cover; 25. Maintenance port. Detailed Implementation

[0021] 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.

[0022] like Figures 1-5 As shown, the present invention proposes an underground coal seam directional gas regulating device, including an air duct 1, an installation frame 4, an installation pipe 6, a cleaning pipe 11, and a motor 17. The lower end of the air duct 1 is connected to the installation pipe 6, and the installation frame 4 is sleeved on the outer wall of the installation pipe 6. The motor 17 is provided at one end of the installation frame 4. Both ends of the installation pipe 6 are provided with rotating shafts 18 that are rotatably installed inside the installation frame 4. The output end of the motor 17 is connected to the rotating shafts 18. Universal tube 1 7 and universal tube 2 8 are provided inside the installation pipe 6. A connecting block 16 is provided at one end of the installation frame 4. A hydraulic rod 15 with a telescopic end connected to the connecting block 16 is provided on one side of the lower end of the air duct 1. A suction nozzle 5 is provided at the lower end of the installation pipe 6.

[0023] The front end of the air duct 1 is provided with a maintenance port 25, and the front end of the maintenance port 25 is provided with a closed cover 9 that is bolted to the air duct 1. The front end of the closed cover 9 is provided with a handle 10.

[0024] Flange 2 is installed at both ends of duct 1;

[0025] Positioning holes 3 are provided inside the four corners of one end of the air duct 1, positioning blocks 14 are provided at the four corners of one end of the air duct 1, and a bracket 12 is provided at the upper end of the air duct 1.

[0026] Based on the implementation steps of Example 1: the air duct 1 is connected to the positioning hole 3 through the positioning block 14, and the air ducts 1 are installed through flange 2. Each section of air duct 1 is equipped with a suction nozzle 5. It is worth noting that during underground coal mining, gas detection devices are installed at intervals to detect gas. After gas detection, the corresponding installation pipe 6 is opened. A valve needs to be installed inside the installation pipe 6 to control the opening and closing of the installation pipe 6. The motor 17 drives the rotating shaft 18 to rotate, and the rotating shaft 18 drives the installation pipe 6 to rotate through the universal tube 8 to adjust the front and rear angles of the suction nozzle 5. The hydraulic rod 15 operates the telescopic end to apply longitudinal force to the connecting block 16, and then squeezes out through the universal tube 8 to adjust the left and right angles of the suction nozzle 5. Gas overflowing from the coal seam at different locations is sucked out, and the suction positioning structure is easy to adjust and convenient to use.

[0027] like Figures 1-5 As shown, compared with Embodiment 1, the underground coal seam directional gas regulating device proposed in this utility model further includes: a cleaning pipe 11 is provided at the upper end of the air duct 1, the cleaning pipe 11 is a three-way pipe, and the lower end of the cleaning pipe 11 passes through the air duct 1.

[0028] A filter screen 19 is installed at the connection between the air duct 1 and the installation pipe 6;

[0029] A pressure cover 24 is provided at the upper end of the filter screen 19, and a sleeve 22 is provided at the upper end of the pressure cover 24. A sealing ring 21 is sleeved on the outer wall of one end of the cleaning pipe 11 inside the air duct 1, and the sleeve 22 is slidably sleeved on the outer wall of the sealing ring 21.

[0030] A side ring is fitted onto the outer wall of the sleeve 22, and a spring 20 fixed to the inner wall of the upper end of the air duct 1 is provided at the upper end of the side ring. A pull rod 23 is provided on the outer wall of the sleeve 22.

[0031] Flange 2 13 is provided at both ends of the cleaning pipe 11;

[0032] In this embodiment, when gas is pumped out, the pumped airflow is filtered through the filter screen 19 to prevent dust in the underground roadway from entering the ventilation duct 1. After a period of use, the cleaning pipe 11 delivers high-pressure airflow, which blows the filter screen 19 through the sleeve 22 and the pressure cover 24, cleaning the dust adhering to the lower end of the filter screen 19. At the same time, the filter screen 19 is held by the pressure cover 24, which is elastically supported by the spring 20. Then, the sleeve 22 is lifted longitudinally by the gripping rod 23, which makes it easy to remove the lower end of the pressure cover 24 from the filter screen 19 for maintenance and replacement.

[0033] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A directional gas regulating device for underground coal seams, comprising an air duct (1), a mounting frame (4), a mounting pipe (6), a cleaning pipe (11), and a motor (17), characterized in that: The lower end of the air duct (1) is connected to an installation pipe (6). The outer wall of the installation pipe (6) is fitted with an installation frame (4). One end of the installation frame (4) is equipped with a motor (17). Both ends of the installation pipe (6) are equipped with rotating shafts (18) that are rotatably installed inside the installation frame (4). The output end of the motor (17) is connected to the rotating shaft (18). The installation pipe (6) is equipped with a universal tube one (7) and a universal tube two (8). One end of the installation frame (4) is equipped with a connecting block (16). The lower end of the air duct (1) is equipped with a hydraulic rod (15) whose telescopic end is connected to the connecting block (16). The lower end of the installation pipe (6) is equipped with a suction nozzle (5).

2. The underground coal seam directional gas regulating device according to claim 1, characterized in that: The air duct (1) has a maintenance port (25) at the front end, and a closed cover (9) that is bolted to the air duct (1) is provided at the front end of the maintenance port (25), and a handle (10) is provided at the front end of the closed cover (9).

3. The underground coal seam directional gas regulating device according to claim 1, characterized in that: A cleaning pipe (11) is provided at the upper end of the air duct (1). The cleaning pipe (11) is a three-way pipe, and the lower end of the cleaning pipe (11) passes through the air duct (1).

4. The underground coal seam directional gas regulating device according to claim 1, characterized in that: A filter screen (19) is provided at the connection between the air duct (1) and the installation pipe (6).

5. The underground coal seam directional gas regulating device according to claim 4, characterized in that: The filter screen (19) is provided with a pressure cover (24) at the upper end, and a sleeve (22) is provided at the upper end of the pressure cover (24). The cleaning pipe (11) is located inside the air duct (1) and a sealing ring (21) is sleeved on the outer wall of one end. The sleeve (22) is slidably sleeved on the outer wall of the sealing ring (21).

6. The underground coal seam directional gas regulating device according to claim 5, characterized in that: The sleeve (22) has a side ring fitted on its outer wall. A spring (20) is fixed to the inner wall of the upper end of the air duct (1) at the upper end of the side ring. A pull rod (23) is provided on the outer wall of the sleeve (22).

7. The underground coal seam directional gas regulating device according to claim 1, characterized in that: The air duct (1) is provided with flange 1 (2) at both ends, and the cleaning pipe (11) is provided with flange 2 (13) at both ends.

8. The underground coal seam directional gas regulating device according to claim 1, characterized in that: The air duct (1) has positioning holes (3) at the four corners of one end, positioning blocks (14) at the four corners of one end, and a bracket (12) at the upper end of the air duct (1).

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