Coal mine gas taking device

Abstract

The utility model discloses a coal mine gas taking device which comprises a separation chamber, a connecting main pipe is arranged at the top of a gas outlet pipe, one end of the connecting main pipe is connected with a gas extraction pump station, a connecting transverse pipe is arranged on one side of the separation chamber, a first bearing is fixedly arranged in the center of a first filter screen, and a second bearing is arranged at the top of a connecting vertical pipe. A transmission shaft is connected between the first bearing and the second bearing in a sleeved mode, the surface of the transmission shaft is sleeved with spiral blades, a cleaning rod is arranged on the surface of the bottom of the first filter screen and connected to the surface of the transmission shaft in a sleeved mode, and a brush layer is arranged on the surface of the cleaning rod and attached to the first filter screen. According to the utility model, moisture and dust in extracted gas are reduced through multiple filtration, the internal blockage of the gas extraction device caused by long-term use is avoided, and the dust attached to the filter screen can be effectively cleaned, so that the filtering efficiency is kept, the gas extraction efficiency is improved, and the gas content of a coal seam is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine gas extraction, in particular to a coal mine gas extraction device. Background Art

[0002] The gas extraction device extracts the gas in the coal seam and goaf into the pipeline through negative pressure and discharges it to a safe place on the ground. It is a fundamental measure to prevent coal mine gas disasters and an important means to reduce the gas content in coal seams.

[0003] The environment in coal mines is relatively harsh. There is a large amount of moisture and dust in the passing gas. Long-term use can easily cause blockage inside the gas extraction device, affecting the efficiency of gas extraction. Utility Model Content

[0004] The purpose of the utility model is to provide a coal mine gas extraction device in order to solve the above problems.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] The utility model discloses a coal mine gas extraction device, comprising a separation chamber, an air outlet pipe is arranged on the top of the separation chamber, a connecting main pipe is arranged on the top of the air outlet pipe, one end of the connecting main pipe is connected to a gas extraction pump station, a connecting horizontal pipe is arranged on one side of the separation chamber, a connecting vertical pipe is arranged on one end of the connecting horizontal pipe, a first filter is arranged at the bottom opening of the connecting vertical pipe, a first bearing is fixedly arranged at the center of the first filter, a second bearing is arranged on the top of the connecting vertical pipe, a transmission shaft is sleeved between the first bearing and the second bearing, a spiral blade is sleeved on the surface of the transmission shaft, a cleaning rod is arranged on the bottom surface of the first filter, the cleaning rod is sleeved on the surface of the transmission shaft, a brush layer is arranged on the surface of the cleaning rod, and the brush layer is close to the first filter.

[0007] As a preferred technical solution of a coal mine gas extraction device of the utility model, the first filter screen is threadedly connected to the connecting vertical pipe.

[0008] As an optimal technical solution for a coal mine gas extraction device of the utility model, a vertical sliding groove is provided on the bottom surface of the transmission shaft, a sliding block is provided inside the sliding groove, the sliding block is fixedly connected to the cleaning rod, a limiting block is provided at the bottom end of the transmission shaft, a spring is provided on the top of the limiting block, the spring is sleeved on the surface of the transmission shaft, and the top of the spring is in contact with the surface of the cleaning rod.

[0009] As a preferred technical solution of a coal mine gas extraction device of the utility model, the sliding block is slidably connected with the sliding groove.

[0010] As an optimal technical solution of a coal mine gas extraction device of the utility model, an inclined connecting plate is provided inside the separation chamber, and evenly distributed atomizing nozzles are provided at the bottom of the connecting plate. A drain pipe is provided at the bottom of the separation chamber, and a collecting pipe is provided at the bottom of the drain pipe. A water storage tank is provided at one end of the collecting pipe, and a second filter screen and a water pump are provided inside the water storage tank. One end of the water pump is connected to a water supply pipe, and the water supply pipe is connected to the atomizing nozzle. Evenly distributed connecting holes are opened through the surface of the connecting plate, and a cooler is provided on the top of the connecting plate. A water outlet pipe is provided at one end of the cooler, and one end of the water outlet pipe is connected to the drain pipe.

[0011] As a preferred technical solution of a coal mine gas extraction device of the utility model, a third filter screen is arranged inside the connecting hole.

[0012] As a preferred technical solution of a coal mine gas extraction device of the utility model, the drainage pipe is connected to the collection pipe through a one-way valve.

[0013] As a preferred technical solution of a coal mine gas extraction device of the utility model, the gas outlet pipe is connected to the connecting main pipe through a solenoid valve.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] The utility model reduces the moisture and dust in the extracted gas through multiple filtrations, thus avoiding internal blockage of the gas extraction device due to long-term use, and can effectively clean the dust attached to the filter screen to maintain the filtration efficiency, improve the gas extraction efficiency, and thus reduce the gas content in the coal seam. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a plan view of the utility model;

[0018] Figure 2 It is a three-dimensional diagram of the first filter screen of the utility model;

[0019] Figure 3 It is an enlarged view of the structure of point A of the utility model;

[0020] Figure 4 It is an enlarged view of the structure at B of the utility model;

[0021] In the figure: 1, separation chamber; 2, air outlet pipe; 3, connecting main pipe; 4, gas extraction pump station; 5, connecting horizontal pipe; 6, connecting vertical pipe; 7, first filter; 8, first bearing; 9, second bearing; 10, transmission shaft; 11, spiral blade; 12, cleaning rod; 13, brush layer; 14, sliding groove; 15, sliding block; 16, limit block; 17, spring; 18, connecting plate; 19, connecting plate; 20, drain pipe; 21, collecting pipe; 22, water storage tank; 23, second filter; 24, water pump; 25, water supply pipe; 26, connecting hole; 27, cooler; 28, water outlet pipe; 29, third filter; 201, one-way valve; 202, solenoid valve. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0023] In the drawings, the same reference numerals all refer to the same components.

[0024] Example 1

[0025] like Figure 1-4 As shown, it includes a separation chamber 1, an air outlet pipe 2 is arranged on the top of the separation chamber 1, a connecting main pipe 3 is arranged on the top of the air outlet pipe 2, one end of the connecting main pipe 3 is connected to a gas extraction pump station 4, a connecting horizontal pipe 5 is arranged on one side of the separation chamber 1, a connecting vertical pipe 6 is arranged on one end of the connecting horizontal pipe 5, a first filter screen 7 is arranged at the bottom opening of the connecting vertical pipe 6, a first bearing 8 is fixedly arranged at the center of the first filter screen 7, a second bearing 9 is arranged on the top of the connecting vertical pipe 6, a transmission shaft 10 is sleeved between the first bearing 8 and the second bearing 9, a spiral blade 11 is sleeved on the surface of the transmission shaft 10, a cleaning rod 12 is arranged on the bottom surface of the first filter screen 7, the cleaning rod 12 is sleeved on the surface of the transmission shaft 10, a brush layer 13 is arranged on the surface of the cleaning rod 12, and the brush layer 13 is close to the first filter screen 7.

[0026] Furthermore, the first filter screen 7 is threadedly connected to the vertical connection pipe 6, and the first filter screen 7 is conveniently disassembled through the thread.

[0027] A vertical sliding groove 14 is provided on the bottom surface of the transmission shaft 10, and a sliding block 15 is provided inside the sliding groove 14. The sliding block 15 is fixedly connected to the cleaning rod 12. A limit block 16 is provided at the bottom end of the transmission shaft 10, and a spring 17 is provided on the top of the limit block 16. The spring 17 is sleeved on the surface of the transmission shaft 10, and the top of the spring 17 contacts the surface of the cleaning rod 12. When the vertical pipe 6 is connected to take in air, the spiral blade 11 rotates through the transmission shaft 10, so that the cleaning rod 12 rotates, so that its brush layer 13 cleans the surface of the first filter screen 7. After a long period of brushing, the bristles will bend and break, so that the bristles cannot fit the surface of the first filter screen 7, thereby reducing the cleaning efficiency. By providing the spring 17, the spring 17 presses the cleaning rod 12 close to the surface of the first filter screen 7, so that the brush layer 13 can continuously and effectively fit the surface of the first filter screen 7 for cleaning.

[0028] The sliding block 15 is slidably connected to the sliding groove 14 . When the spring 17 presses the cleaning rod 12 to be close to the surface of the first filter screen 7 , the sliding block 15 slides inside the sliding groove 14 .

[0029] The separation chamber 1 is provided with an inclined connection plate 18 inside, and the bottom of the connection plate 18 is provided with evenly distributed atomizing nozzles 19. The separation chamber 1 is provided with a drain pipe 20 at the bottom, and a collecting pipe 21 is provided at the bottom of the drain pipe 20. A water storage tank 22 is provided at one end of the collecting pipe 21. A second filter screen 23 and a water pump 24 are provided inside the water storage tank 22. One end of the water pump 24 is connected to a water supply pipe 25, and the water supply pipe 25 is connected to the atomizing nozzle 19. The surface of the connection plate 18 is penetrated with evenly distributed connection holes 26. A cooler 27 is provided on the top of the connection plate 18. A water outlet pipe 28 is provided at one end of the cooler 27. One end of the water outlet pipe 28 It is connected to the drain pipe 20. After the gas enters the separation chamber 1, the water pump 24 is turned on, and the water is sprayed by the atomizing nozzle 19 through the water supply pipe 25. The water mist absorbs the dust in the gas, and the water droplets fall into the bottom of the separation chamber 1 and are discharged into the collection pipe 21 through the drain pipe 20, and then enter the water storage tank 22. The second filter screen 23 filters it, and the filtered water continues to be recycled. The purified gas enters the top of the separation chamber 1 through the connecting hole 26, and the gas enters the cooler 27. The moisture in the gas in the cooler 27 is cooled and separated, and the separated liquid enters the drain pipe 20 through the outlet pipe 28.

[0030] A third filter screen 29 is disposed inside the connection hole 26 , and the third filter screen 29 can enhance the filtering efficiency and filter dust and moisture.

[0031] The drain pipe 20 is connected to the collecting pipe 21 via a one-way valve 201 .

[0032] The outlet pipe 2 is connected to the connecting main pipe 3 through the solenoid valve 202

[0033] Specifically, during operation, the gas extraction pump station 4 is turned on, and each separation chamber 1 absorbs gas by connecting the main pipe 3 and the outlet pipe 2. The gas is drawn into the separation chamber 1 by connecting the vertical pipe 6 and the horizontal pipe 5. The first filter 7 performs preliminary filtration on the incoming gas to filter out its dust. When the vertical pipe 6 is connected to let in air, the spiral blade 11 rotates through the transmission shaft 10, so that the cleaning rod 12 rotates, so that the brush layer 13 cleans the surface of the first filter 7, so that the first filter 7 is always kept clean, and the filtering efficiency of the first filter 7 is improved. After a long period of brushing, the bristles will bend and break, so that the bristles cannot fit the surface of the first filter 7, thereby reducing the cleaning efficiency. By setting the spring 17, the spring 17 presses the cleaning rod 12 close to the surface of the first filter 7, so that the brush layer 13 can continue to effectively fit the surface of the first filter 7. The surface is cleaned. After the gas enters the separation chamber 1, the water pump 24 is turned on, and the water is sprayed by the atomizing nozzle 19 through the water supply pipe 25. The water mist absorbs the dust in the gas, and the water droplets fall into the bottom of the separation chamber 1 and are discharged into the collection pipe 21 through the drain pipe 20, and then enter the water storage tank 22. The second filter screen 23 filters it, and the filtered water continues to be recycled. The purified gas enters the top of the separation chamber 1 through the connecting hole 26. The third filter screen 29 can enhance the filtration efficiency, so that the moisture and dust in the gas passing through it are filtered again, and the gas enters the cooler 27. The moisture in the gas in the cooler 27 is cooled and separated, and the separated liquid enters the drain pipe 20 through the water outlet pipe 28. The dry and clean gas is pumped into the gas extraction pump station 4 through the outlet pipe 2 and the connecting main pipe 3 to reduce the gas content inside the mine.

[0034] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A coal mine gas extraction device, comprising a separation chamber (1), characterized in that: The top of the separation chamber (1) is provided with an air outlet pipe (2), the top of the air outlet pipe (2) is provided with a connecting main pipe (3), one end of the connecting main pipe (3) is connected to a gas extraction pump station (4), one side of the separation chamber (1) is provided with a connecting horizontal pipe (5), one end of the connecting horizontal pipe (5) is provided with a connecting vertical pipe (6), a first filter screen (7) is provided at the bottom opening of the connecting vertical pipe (6), a first bearing (8) is fixedly provided at the center of the first filter screen (7), and the connecting A second bearing (9) is arranged at the top of the vertical pipe (6); a transmission shaft (10) is sleeved between the first bearing (8) and the second bearing (9); a spiral blade (11) is sleeved on the surface of the transmission shaft (10); a cleaning rod (12) is arranged on the bottom surface of the first filter screen (7); the cleaning rod (12) is sleeved on the surface of the transmission shaft (10); a brush layer (13) is arranged on the surface of the cleaning rod (12); and the brush layer (13) is in close contact with the first filter screen (7).

2. A coal mine gas extraction device according to claim 1, characterized in that: The first filter screen (7) is threadedly connected to the vertical connection pipe (6).

3. A coal mine gas extraction device according to claim 1, characterized in that: The bottom surface of the transmission shaft (10) is provided with a vertical sliding groove (14), the interior of the sliding groove (14) is provided with a sliding block (15), the sliding block (15) is fixedly connected to the cleaning rod (12), the bottom end of the transmission shaft (10) is provided with a limit block (16), the top of the limit block (16) is provided with a spring (17), the spring (17) is sleeved on the surface of the transmission shaft (10), and the top of the spring (17) is in contact with the surface of the cleaning rod (12).

4. A coal mine gas extraction device according to claim 3, characterized in that: The sliding block (15) is slidably connected to the sliding groove (14).

5. A coal mine gas extraction device according to claim 1, characterized in that: An inclined connecting plate (18) is arranged inside the separation chamber (1), and evenly distributed atomizing nozzles (19) are arranged at the bottom of the connecting plate (18). A drain pipe (20) is arranged at the bottom of the separation chamber (1), and a collecting pipe (21) is arranged at the bottom of the drain pipe (20). A water storage tank (22) is arranged at one end of the collecting pipe (21), and a second filter screen (23) and a water pump (24) are arranged inside the water storage tank (22). One end of the water pump (24) is connected to a water supply pipe (25), and the water supply pipe (25) is connected to the atomizing nozzle (19). Evenly distributed connecting holes (26) are opened through the surface of the connecting plate (18), and a cooler (27) is arranged on the top of the connecting plate (18). A water outlet pipe (28) is arranged at one end of the cooler (27), and one end of the water outlet pipe (28) is connected to the drain pipe (20).

6. A coal mine gas extraction device according to claim 5, characterized in that: A third filter screen (29) is arranged inside the connection hole (26).

7. A coal mine gas extraction device according to claim 5, characterized in that: The drainage pipe (20) is connected to the collection pipe (21) via a one-way valve (201).

8. A coal mine gas extraction device according to claim 1, characterized in that: The air outlet pipe (2) is connected to the connecting main pipe (3) via a solenoid valve (202).

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