Fully mechanized caving face air return corner low-oxygen area low-noise compressed air diffusion oxygenating device

Abstract

The utility model relates to a fully mechanized caving face air return corner low-oxygen area low-noise compressed air diffusion oxygenating device which comprises an air pressure diffusion pipe (1) and diffusion holes (2), a plurality of diffusion holes (2) are evenly distributed in the air pressure diffusion pipe (1) which is horizontally arranged along the axis, and the two ends of the air pressure diffusion pipe (1) are closed. The plurality of diffusion holes (2) are uniformly formed in the upper half part of the wind pressure diffusion pipe (1); the lower half part of the wind pressure diffusion pipe (1) is communicated with the top end of the vertical water containing section (3), and the lower end of the vertical water containing section (3) is communicated with the horizontal water containing section (4); the end, entering the horizontal water containing section (4), of the first air inlet pipe (5) and the end, entering the horizontal water containing section (4), of the second air inlet pipe (6) are spaced by a certain distance, a fall exists between the first air inlet pipe (5) and the second air inlet pipe (6), and the height difference between the first air inlet pipe (5) and the second air inlet pipe (6) is 50 mm. The communication obstacles of workers can be effectively reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oxygen supplementation devices, in particular to a low-noise compressed air diffusion oxygen supplementation device in a low-oxygen zone in a return air corner of a fully mechanized caving working face. Background Art

[0002] Due to the influence of factors such as the altitude of more than 2000m and complex geological structure, the oxygen content in coal mines is less than 18% underground. Hypoxia often occurs in the return air corner of the coal mining face, with the oxygen content being only about 15%. There is a great safety risk when personnel work in the return air corner of the working face. Conventional wind ducts simply blow air into the fully mechanized caving working face, and the airflow distribution is uneven, and oxygen cannot be well distributed to the return air corner of the coal mining face.

[0003] At present, the utility model with the announcement number CN219176376U discloses a compressed air diffusion oxygen supplement device for the low-oxygen area in the return air corner of a high-altitude fully-mechanized caving working face, including an air inlet pipe and a diffusion pipe; the diffusion pipe includes a vertical pipe and a plurality of horizontal pipes; one side of the horizontal pipe is fixed to the top of the vertical pipe and is connected to the vertical pipe; a plurality of air outlets are arranged on the horizontal pipe along its axial direction; the axis of the air outlet is arranged parallel to the horizontal plane; a threaded sleeve is fixedly arranged on the top of the vertical pipe; in the utility model, compressed air enters the vertical pipe from the air inlet pipe, is transported to the horizontal pipe after passing through the water body in the vertical pipe, and is discharged from the air outlet, and the noise generated by the compressed air flow passing through the water body is partially absorbed, thereby reducing the noise transmitted from the air outlet, reducing the noise hazard in the return air corner area of ​​the working face; the compressed air discharged through the plurality of horizontal pipes is evenly diffused to the surroundings with the axis of the vertical pipe as the center, so that the oxygen content in the return air corner area of ​​the working face is more uniform. However, due to the small water capacity and limited distance between the air inlet pipe and the riser, this application plan results in extremely high noise during actual use, which seriously affects the normal work and communication of the staff. Summary of the invention

[0004] In response to the problems existing in the above-mentioned prior art, the utility model provides a low-noise compressed air diffusion and oxygen supply device in the low-oxygen area of ​​the return air corner of the comprehensive mining working face, which can make the air diffuse more evenly in the return air corner of the face and effectively reduce noise, which can effectively reduce communication barriers among workers and improve work efficiency.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a low-noise compressed air diffusion oxygen supply device for the low-oxygen area in the return air corner of the comprehensive caving working face, comprising a wind pressure diffusion pipe, diffusion holes, a vertical water-containing section, a horizontal water-containing section, an air intake pipe one, an air intake pipe two and a water intake pipe, the horizontally arranged wind pressure diffusion pipe has a plurality of diffusion holes evenly distributed along the axis and closed at both ends; the plurality of diffusion holes are arranged in the upper half of the wind pressure diffusion pipe; the lower half of the wind pressure diffusion pipe is connected to the top of the vertical water-containing section, and the lower end of the vertical water-containing section is connected to the horizontal water-containing section; the ends of the air intake pipe one and the air intake pipe two entering the horizontal water-containing section are spaced a certain distance apart, and there is a height difference between the air intake pipe one and the air intake pipe two, the height difference between the air intake pipe one and the air intake pipe two is fifty millimeters, the air inlets at the outer ends of the air intake pipe one and the air intake pipe two are connected to the air supply pipe; the water intake pipe is connected to the middle of the horizontal water-containing section.

[0006] In addition, the low-noise compressed air diffusion oxygen supplement device in the low-oxygen area of ​​the return air corner of the fully-mechanized caving working face proposed in the above embodiment of the utility model may also have the following additional technical features:

[0007] As a further improvement of the present invention, the horizontal water-holding section is a six-inch steel pipe with both ends narrowed to connect to a four-inch steel pipe, the ends of the four-inch steel pipe are closed, and the four-inch steel pipes on both sides of the six-inch steel pipe of the horizontal water-holding section are respectively connected to the lower end of the vertical water-holding section.

[0008] As a further improvement of the present utility model, the height of the vertical water-holding section is not less than 0.8 meters, and the pipe diameter is two inches.

[0009] As a further improvement of the utility model, the wind pressure diffusion pipe is made by cutting a four-inch steel pipe and has a length of two thousand four hundred millimeters.

[0010] As a further improvement of the present invention, the diameter of the diffusion hole is ten millimeters.

[0011] As a further improvement of the present invention, drain valves are provided at both ends of the horizontal water-holding section.

[0012] Through the above scheme, the utility model has at least the following advantages: compared with conventional wind ducts, compressed air enters from the air inlets of air inlet pipe one and air inlet pipe two, and the height difference between air inlet pipe one and air inlet pipe two is about 50mm. The two streams of compressed air cause the water in the six-inch pipeline of the horizontal water-containing section to rotate counterclockwise, and the noise energy of the airflow is partially converted into the rotational energy of the water, which passes through the horizontal water-containing section and the vertical water-containing section and is then discharged from the diffusion holes of the wind pressure diffusion pipe. This can not only evenly supplement oxygen to the return air corner area of ​​the comprehensive caving working face, but also reduce the occupational hazards of the noise of the compressed air flow to on-site workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of a low-noise compressed air diffusion oxygen supply device in the low-oxygen area of ​​the return air corner of a fully mechanized caving working face;

[0014] In the figure: 1. wind pressure diffusion pipe, 2. diffusion hole, 3. vertical water-holding section, 4. horizontal water-holding section, 5. air inlet pipe 1, 6. air inlet pipe 2, 7. water inlet pipe. DETAILED DESCRIPTION

[0015] The following describes the low-noise compressed air diffusion oxygen supply device for the low-oxygen area in the return air corner of the fully-mechanized caving working face according to the utility model in conjunction with the accompanying drawings.

[0016] In the specific implementation mode 1 of the present application, Figure 1 As shown, the low-noise compressed air diffusion oxygen supplement device for the low-oxygen area in the return air corner of the fully mechanized caving working face (hereinafter referred to as "this patent") comprises a wind pressure diffusion pipe 1, a diffusion hole 2, a vertical water-containing section 3, a horizontal water-containing section 4, an air inlet pipe 1 5, an air inlet pipe 2 6 and a water inlet pipe 7. The horizontally arranged wind pressure diffusion pipe 1 is evenly distributed with a plurality of diffusion holes 2 along the axis and closed at both ends; the plurality of diffusion holes 2 are arranged in the upper half of the wind pressure diffusion pipe 1; the lower half of the wind pressure diffusion pipe 1 is connected to the top of the vertical water-containing section 3, and the lower end of the vertical water-containing section 3 is connected to the horizontal water-containing section 4; the ends of the air inlet pipe 1 5 and the air inlet pipe 2 6 entering the horizontal water-containing section 4 are spaced a certain distance apart, and there is a drop between the air inlet pipe 1 5 and the air inlet pipe 2 6, the height difference between the air inlet pipe 1 5 and the air inlet pipe 2 6 is fifty millimeters, and the air inlets at the outer ends of the air inlet pipe 1 5 and the air inlet pipe 2 6 are connected to the air supply pipe; the water inlet pipe 7 is connected to the middle of the horizontal water-containing section 4. The horizontal water-containing section 4 is a six-inch steel pipe with two ends connected to a four-inch steel pipe, the ends of the four-inch steel pipe are closed, and the four-inch steel pipes on both sides of the six-inch steel pipe of the horizontal water-containing section 4 are respectively connected to the lower end of the vertical water-containing section 3. The height of the vertical water-containing section 3 is not less than 0.8 meters, and the pipe diameter is two inches.

[0017] The compressed air diffusion oxygen supply device for the low-oxygen area in the return air corner of the high-altitude fully mechanized caving working face with announcement number CN219176376U (hereinafter referred to as "this patent"), the application scheme originally has a small water capacity and a limited distance between the air intake pipe and the riser, resulting in extremely high noise during actual use, seriously affecting the normal work and communication of the staff. However, this patent uses a special vertical water holding section 3 and a horizontal water holding section 4 to expand the water capacity, and through the height difference of about 50mm between the air intake pipe 1 5 and the air intake pipe 2 6, the two streams of compressed air push the water in the six-inch pipe of the horizontal water holding section to rotate counterclockwise, so that the noise energy of the airflow is partially converted into the rotational energy of the water, effectively reducing the operating noise.

[0018] In order to further optimize the working efficiency of the present application, the wind pressure diffusion pipe 1 can cover the return air corner of the working surface as much as possible. The wind pressure diffusion pipe 1 is cut and made of a four-inch steel pipe, and the length is 2,400 mm. In order to ensure sufficient air volume, the diameter of the diffusion hole 2 is 10 mm. In order to facilitate the discharge of dirt, the two ends of the horizontal water-containing section 4 are provided with sewage valves.

[0019] When in use, install the low-noise compressed air diffusion oxygen supply device in the low-oxygen area in the return air corner of the fully-mechanized caving working face, connect the corresponding pipelines, and the equipment can be put into use.

[0020] When the utility model is in use, the specific operations are as follows:

[0021] When in use, open the valve of the water inlet pipe 7 to fill the vertical water-containing section 3 and the horizontal water-containing section 4 with water, close the water inlet pipe 7, open the valves of the air inlet pipe 1 5 and the air inlet pipe 2 6, and the compressed air enters the middle section of the horizontal water-containing section 4 with a diameter of six inches. Since there is a fifty-millimeter drop between the air inlet pipe 1 5 and the air inlet pipe 2 6, and there is a certain distance between them, therefore, when the compressed air is blown out from the air inlet pipe 1 5 and the air inlet pipe 2 6, the two streams of compressed air make the water in the six-inch pipeline of the horizontal water-containing section 4 appear like Figure 1 As shown, the airflow rotates counterclockwise, and part of the noise energy of the airflow is converted into the rotational energy of water. The air after noise reduction passes through the four-inch pipe of the horizontal water-containing section 4 and the vertical water-containing section 3 into the wind pressure diffusion tube 1, and is finally discharged from the diffusion hole 2.

[0022] In summary, in the low-noise compressed air diffusion oxygen supply device for the low-oxygen area in the return air corner of the comprehensive caving working face of the utility model embodiment, compressed air enters from the air inlets of air inlet pipe 1 5 and air inlet pipe 2 6. The height difference between air inlet pipe 1 5 and air inlet pipe 2 6 is about 50 mm. The two streams of compressed air cause the water in the six-inch pipeline of the horizontal water-containing section to rotate counterclockwise. The noise energy of the airflow is partially converted into the rotational energy of the water, passes through the horizontal water-containing section 4 and the vertical water-containing section 3, and is then discharged from the diffusion hole 2 of the wind pressure diffusion pipe 1. Since the wind pressure itself is filtered through the vertical water-containing section 3 and the horizontal water-containing section 4, the noise value is greatly reduced, and the noise value is reduced from more than 90 decibels to less than 80 decibels, which greatly reduces the noise interference to the operators who are returning materials, maintaining, etc. in the return air corner. It can not only evenly supplement oxygen to the return air corner area of ​​the comprehensive caving working face, but also reduce the occupational hazards of the noise of the compressed air flow to on-site operators.

[0023] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A low-noise compressed air diffusion oxygen supply device for the low-oxygen area in the return air corner of a fully mechanized caving working face, comprising a wind pressure diffusion pipe (1) and a diffusion hole (2), characterized in that: The horizontally arranged wind pressure diffusion pipe (1) has a plurality of diffusion holes (2) uniformly distributed along the axis and closed at both ends; the plurality of diffusion holes (2) are arranged in the upper half of the wind pressure diffusion pipe (1); the lower half of the wind pressure diffusion pipe (1) is connected to the top of the vertical water-containing section (3), and the lower end of the vertical water-containing section (3) is connected to the horizontal water-containing section (4); the ends of the air inlet pipe (5) and the air inlet pipe (6) entering the horizontal water-containing section (4) are spaced a certain distance apart, and there is a height difference between the air inlet pipe (5) and the air inlet pipe (6), the height difference between the air inlet pipe (5) and the air inlet pipe (6) is fifty millimeters, and the air inlets at the outer ends of the air inlet pipe (5) and the air inlet pipe (6) are connected to the air supply pipe; the water inlet pipe (7) is connected to the middle of the horizontal water-containing section (4).

2. The low-noise compressed air diffusion oxygen supply device for the low-oxygen area in the return air corner of the fully mechanized caving working face according to claim 1 is characterized in that: The horizontal water-containing section (4) is a six-inch steel pipe with two ends connected to a four-inch steel pipe, and the ends of the four-inch steel pipe are closed. The four-inch steel pipes on both sides of the six-inch steel pipe of the horizontal water-containing section (4) are respectively connected to the lower end of the vertical water-containing section (3).

3. The low-noise compressed air diffusion oxygen supply device for the low-oxygen area in the return air corner of the fully mechanized caving working face according to claim 2 is characterized in that: The vertical water-holding section (3) has a height of not less than 0.8 meters and a pipe diameter of two inches.

4. The low-noise compressed air diffusion oxygen supply device for the low-oxygen area in the return air corner of the fully mechanized caving working face according to claim 1 is characterized in that: The wind pressure diffusion pipe (1) is made by cutting a four-inch steel pipe and has a length of 2,400 millimeters.

5. The low-noise compressed air diffusion oxygen supply device for the low-oxygen area in the return air corner of the fully mechanized caving working face according to claim 4 is characterized in that: The diameter of the diffusion hole (2) is ten millimeters.

6. The low-noise compressed air diffusion oxygen supply device for the low-oxygen area in the return air corner of the fully mechanized caving working face according to claim 1 is characterized in that: Both ends of the horizontal water-containing section (4) are provided with sewage valves.

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