Coal seam hydrogen sulfide air supply dilution device

Abstract

The utility model relates to the field of mineral engineering, in particular to a coal seam hydrogen sulfide air supply diluting device. The utility model provides a coal seam hydrogen sulfide air supply diluting device which can adjust the ventilation quantity of a ventilation pipeline, is convenient for introducing more fresh air into a working area, avoids threats to the health of workers caused by over-high hydrogen sulfide concentration, and improves the quality of a working environment. A coal seam hydrogen sulfide air supply dilution device comprises supporting frames, a ventilation pipeline and the like, and the supporting frames are connected to the outer side of the ventilation pipeline. The motor is started to drive the blades to rotate, so that the ventilation quantity of the ventilation pipeline is increased, hydrogen sulfide is diluted, the concentration of the hydrogen sulfide is reduced, the ventilation quantity of the ventilation pipeline can be adjusted, more fresh air can be conveniently introduced into a working area, and the working efficiency is improved. Threats to the health of workers caused by too high hydrogen sulfide concentration are avoided, and the working environment quality is improved.

Description

Technical Field

[0001] The utility model relates to the field of mining engineering, in particular to a coal seam hydrogen sulfide air supply and dilution device. Background Art

[0002] Coal seam hydrogen sulfide ventilation dilution refers to the ventilation measure of sending large amounts of fresh air into the coal seam mining area in order to reduce the concentration of hydrogen sulfide (H2S) gas generated in the coal seam to a safe level during the coal mining process. Hydrogen sulfide is a highly toxic and flammable gas that is extremely harmful to human health and can be rapidly fatal in high concentrations.

[0003] Existing ventilation dilution for coal seam hydrogen sulfide usually involves installing ventilation ducts at the working face of a mine, directly delivering large amounts of fresh air to the working face through the ventilation ducts to dilute any accumulated hydrogen sulfide. However, current ventilation ducts are unable to adjust the ventilation volume according to the hydrogen sulfide concentration, which can easily lead to excessively high hydrogen sulfide levels in local areas, threatening the health of workers.

[0004] Therefore, it is necessary to design a coal seam hydrogen sulfide air dilution device that can adjust the ventilation volume of the ventilation duct to facilitate the introduction of more fresh air into the working area, avoid the threat of excessive hydrogen sulfide concentration to the health of workers, and improve the quality of the working environment. Utility Model Content

[0005] In order to overcome the shortcomings of the existing coal seam hydrogen sulfide air supply and dilution device, which is unable to adjust the ventilation volume according to the hydrogen sulfide concentration, easily causing the hydrogen sulfide in the local area to be too high, threatening the health of the workers, the utility model provides a coal seam hydrogen sulfide air supply and dilution device that can adjust the ventilation volume of the ventilation duct, facilitate the introduction of more fresh air into the working area, avoid the threat to the health of the workers caused by excessive hydrogen sulfide concentration, and improve the quality of the working environment.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: a coal seam hydrogen sulfide air supply and dilution device, comprising a ventilation duct and a support frame arranged on the outer wall of the ventilation duct, the support frame being used to fix and suspend the ventilation duct above the working face of the mine, an air inlet being provided at one end of the ventilation duct, a plurality of air outlets being provided at the bottom thereof, a fan being provided in the air outlet and being located in the ventilation duct, a rotating shaft being provided above the air outlet, the two ends of which are rotatably fixed to the side walls of the ventilation duct, blades being fixed on the rotating shaft, and one end of the rotating shaft being fixedly connected to the output shaft of the motor;

[0007] Furthermore, a detector is connected to the outer wall of the ventilation duct via a fixing bracket;

[0008] Furthermore, a plurality of water flow channels are provided inside the ventilation duct, the water flow channels traverse the entire ventilation duct, and the water inlet and outlet of the water flow channels are both provided on the end surface of the air inlet;

[0009] In addition, in another embodiment of the present invention, the ventilation duct can also be formed by two concentrically arranged steel pipes through end welding, and multiple water pipes are arranged in the cavity between the two steel pipes, and the water inlet and outlet of the water pipes are both set on the end face of the air inlet.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] 1. The utility model controls the motor to drive the blades to rotate, thereby increasing the ventilation volume of the ventilation duct, diluting the hydrogen sulfide and reducing its concentration, thereby achieving the effect of being able to adjust the ventilation volume of the ventilation duct, facilitating the introduction of more fresh air into the working area, avoiding the threat to the health of workers caused by excessive hydrogen sulfide concentration, and improving the quality of the working environment.

[0012] 2. The utility model connects the water source with the water inlet, so that water can be introduced into the ventilation duct, so that the water absorbs heat and the water that has absorbed the heat flows out from the water outlet, thereby absorbing the heat in the ventilation duct, helping to lower the temperature of the working surface and reducing the fatigue of the miners. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the cross-sectional three-dimensional structure of the utility model;

[0015] In the figure: 1. Support frame; 2. Ventilation duct; 3. Air outlet; 4. Filter; 5. Fan; 6. Water inlet; 7. Water outlet; 8. Fixing frame; 9. Detector; 10. Rotating shaft; 11. Motor; 12. Blades; 13. Air inlet; 14. Water flow channel. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] A coal seam hydrogen sulfide air dilution device, such as Figure 1As shown, it includes a ventilation duct 2 and a support frame 1 arranged on the outer wall of the ventilation duct 2, wherein the support frame 1 is used to fix and suspend the ventilation duct 2 above the working surface of the mine. Multiple support frames can be provided according to the specific shape of the ventilation duct 2. An air inlet 13 is provided at one end of the ventilation duct 2, and multiple air outlets 3 are provided at the bottom thereof. Fans 5 are provided in the air outlets 3;

[0018] The ventilation duct 2 is preferably a stainless steel pipe for easy manufacturing and installation. The corrosion-resistant properties of stainless steel can also adapt to the corrosive environment underground. During specific use, multiple air outlets 3 can be arranged according to actual conditions, even if they are evenly distributed above the mine working face, to prevent uneven air outlet from causing excessively high hydrogen sulfide concentrations at local locations on the mine working face. Fresh air used to dilute hydrogen sulfide can enter the ventilation duct 2 from the air inlet 13, and a diversion effect is generated through the rotation of the fan 5, so that fresh air is discharged from multiple air outlets 3, and at the same time, the hydrogen sulfide on the entire mine working face is diluted. A filter 4 can also be set at the air inlet 13 to filter impurities in the air.

[0019] At the same time, in order to further increase the ventilation volume of the air outlet 3, as Figure 2 As shown, the utility model is provided with a blade 12 driven by a motor 11 on the air outlet 3 in the ventilation duct 2, that is, the motor 11 drives the blade 12 to rotate to improve the diversion effect of the fresh air in the ventilation duct 2 and thus increase the ventilation volume of the air outlet 3;

[0020] Specifically, a rotating shaft 10 is provided inside the ventilation duct 2 and above the air outlet 3, and its two ends are rotatably fixed on the side walls of the ventilation duct 2. A blade 12 is provided on the rotating shaft 10, and one end of the rotating shaft 10 is fixedly connected to the output shaft of the motor 11. That is, when the motor 11 drives the rotating shaft 10 to rotate, it also drives the blade 12 above the air outlet 3 to rotate, thereby achieving the purpose of increasing the ventilation volume at the air outlet 3.

[0021] In addition, as a preferred technical solution, in this embodiment, a detector 9 for detecting the local hydrogen sulfide concentration of the mine working face is connected to the outer wall of the ventilation duct 2 through a fixed frame 8. The position and number of the detector 9 can match the air outlet 3, and the motor 11 at each air outlet 3 is controlled by a controller. The speed of the corresponding motor 11 can be adjusted according to the concentration of hydrogen sulfide at the air outlet 3 at different positions, thereby achieving targeted local dilution of hydrogen sulfide on the mine working face.

[0022] In addition, considering the high temperature working environment underground, such as Figure 2 As shown, the present invention can also cool the fresh air in the ventilation duct 2 to a certain extent, that is, it can dilute the hydrogen sulfide while reducing the temperature in the mine;

[0023] Specifically, Figure 2As shown, in this embodiment, a plurality of water flow channels 14 are provided inside the ventilation duct 2, and the water flow channels 14 traverse the entire ventilation duct 2. The water inlet 6 and the water outlet 7 of the water flow channel 14 are both arranged on the end face of the air inlet 13, that is, the water source is connected with the water inlet 6, and water flows into the water flow channel 14 in the ventilation duct 2 and flows through the entire ventilation duct 2. The water absorbs the heat of the fresh air in the ventilation duct 2 and then flows out from the water outlet 7, thereby absorbing the heat of the fresh air in the ventilation duct 2, helping to reduce the temperature of the working face of the mine and reducing the fatigue of the miners.

[0024] In another embodiment of the present invention, the ventilation duct 2 can also be configured to be formed by two concentrically arranged steel pipes welded at the ends, and multiple water pipes are arranged in the cavity between the two steel pipes to achieve the same cooling function as the water channel 14.

[0025] The above embodiments are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. It should also be understood that after reading the contents of the present invention, those skilled in the art may make various changes or modifications to the present invention, and that these equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A coal seam hydrogen sulfide air supply and dilution device, comprising a ventilation duct (2) and a support frame (1) arranged on the outer wall of the ventilation duct (2), the support frame (1) being used to fix and suspend the ventilation duct (2) above the working surface of a mine, an air inlet (13) being provided at one end of the ventilation duct (2), and a plurality of air outlets (3) being provided at the bottom thereof, and a fan (5) being provided in each of the air outlets (3); It is characterized by: A rotating shaft (10) is provided above the air outlet (3) in the ventilation duct (2). Both ends of the rotating shaft (10) are rotatably fixed on the side walls of the ventilation duct (2). Blades (12) are fixedly provided on the rotating shaft (10). One end of the rotating shaft (10) is fixedly connected to the output shaft of the motor (11).

2. The coal seam hydrogen sulfide air dilution device according to claim 1, characterized in that: The outer wall of the ventilation duct (2) is connected to a detector (9) via a fixing frame (8).

3. The coal seam hydrogen sulfide air dilution device according to claim 1, characterized in that: The ventilation duct (2) is provided with a plurality of water flow channels, which traverse the entire ventilation duct (2), and the water inlets (6) and water outlets (7) of the water flow channels are both arranged on the end surface of the air inlet (13).

4. The coal seam hydrogen sulfide air dilution device according to claim 1, characterized in that: The ventilation duct (2) is formed by welding two concentrically arranged steel pipes at their ends. A plurality of water pipes are provided in the cavity between the two steel pipes. The water inlet (6) and the water outlet (7) of the water pipes are both provided on the end surface of the air inlet (13).

5. The coal seam hydrogen sulfide air dilution device according to claim 1, characterized in that: The ventilation duct (2) is made of stainless steel.

6. The coal seam hydrogen sulfide air dilution device according to claim 1, characterized in that: A filter screen (4) is provided in the air inlet (13).

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