Filter residue purification integrated device for mining gas drainage pipe

Abstract

The utility model discloses a filter residue purification integrated device for a mining gas drainage pipe. A mining gas drainage pipe filter residue purification integrated device comprises a rack, a first filter box, a second filter box, a third filter box, a cold water tank and a purification box are arranged on the rack, a gas inlet pipe is installed at the top of the first filter box, the cold water tank is connected with the purification box, an exhaust pipe is installed at the top of the purification box, and a gas outlet pipe is installed at the top of the exhaust pipe. An adsorbent is placed in the purification box; the adsorbent is a mixture of activated carbon, a zeolite molecular sieve and a carbon molecular sieve. According to the filter residue purification integrated device for the mine gas drainage pipe, the first filter tank, the second filter tank, the third filter tank, the cold water tank and the purification tank are arranged, so that extracted gas can be filtered and dehumidified, impurities in the gas are removed by using an adsorbent in the purification tank, the gas is further purified, and the service life of the gas drainage pipe is prolonged. And the extraction concentration of coal mine gas is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of coal mine gas extraction technology, and in particular to an integrated device for purifying filter residue in a mine gas extraction pipe. Background Technology

[0002] Coal mine gas, also known as coalbed methane, is a mixture of methane, carbon dioxide, and nitrogen that escapes from coal and surrounding rock. It is a harmful factor in coal mine production, polluting the air and, when its concentration is 5%–16%, causing an explosion upon contact with fire, leading to accidents. Methane refers to a harmful gas in mines, primarily composed of coalbed methane, sometimes alone. It is a colorless, odorless, tasteless, flammable, and explosive gas, poorly soluble in water, and more diffusive than air. While non-toxic, high concentrations can cause asphyxiation. Extracted methane contains large amounts of coal ash and water vapor, necessitating the use of coal mine methane drainage and slag removal filtration devices for filtration and removal.

[0003] Existing coal mine gas extraction and slag removal filtration devices can only perform filtration functions and are not effective in purifying gas.

[0004] Therefore, it is necessary to provide an integrated device for purifying filter residue from a mine gas extraction pipe to solve the above-mentioned technical problems. Utility Model Content

[0005] In order to overcome the defects of the existing technology, this utility model provides an integrated device for purifying filter residue in a mine gas extraction pipe, which can improve the extraction concentration of coal mine gas.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] An integrated device for filtering and purifying methane gas in mines includes: a frame, on which a first filter box, a second filter box, a third filter box, a cold water tank, and a purification box are installed. An air inlet pipe is installed on the top of the first filter box and is connected to the extraction pipeline. A one-way valve is installed on the connecting pipeline between the cold water tank and the purification box. An exhaust pipe is installed on the top of the purification box and is connected to the extraction pipeline. An adsorbent is placed inside the purification box. This adsorbent can adsorb impurities in the methane gas, thereby purifying the methane gas content. The adsorbent is a mixture of activated carbon, zeolite molecular sieve, and carbon molecular sieve.

[0008] Preferably, a drain pipe is installed on one side of the cold water tank, and a drain valve is installed on the drain pipe.

[0009] Preferably, a first control valve and a pressure sensor are installed on the air intake pipe, and a first alarm is installed on the top of the first filter box.

[0010] Preferably, a branch pipe is installed between the intake pipe and the exhaust pipe, and a second control valve and a filter assembly are installed on the branch pipe.

[0011] Preferably, a water level sensor is installed on one side of the cold water tank, and a second alarm is installed on the top of the first filter box, with the water level sensor connected to the second alarm.

[0012] Preferably, filter screens are inserted and installed on the sides of the first filter box, the second filter box, and the third filter box.

[0013] Preferably, the filter screen includes a frame and a filter screen installed inside the frame, the filter screen being a polyhedral structure with a concave center and high edges.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) By setting up a first filter box, a second filter box, a third filter box, a cold water box and a purification box, this utility model can filter and dehumidify the extracted gas, and use the adsorbent in the purification box to remove impurities in the gas, further purifying the gas and effectively improving the extraction concentration of coal mine gas.

[0016] (2) This utility model can conveniently drain the water accumulated in the cold water tank by installing a drain pipe and a drain valve on one side of the cold water tank;

[0017] (3) By setting a first control valve, a pressure sensor and a first alarm, this utility model can conveniently and timely replace the filter screen;

[0018] (4) This utility model achieves a temporary gas filtration effect by installing a branch pipe, a second control valve and a filter assembly between the air inlet pipe and the exhaust pipe, so that the gas extraction operation does not need to be interrupted when the filter screen is replaced.

[0019] (5) By setting up a water level sensor and a second alarm, this utility model can conveniently remind personnel to drain the cold water tank;

[0020] (6) By setting a frame and a filter screen with a polyhedral structure, this utility model can extend the service life of the filter screen and facilitate the centralized cleaning of the filtered coal slag. Attached Figure Description

[0021] Figure 1 A schematic diagram of the integrated device for purifying filter residue from a mine gas extraction pipe provided by this utility model.

[0022] Figure 2 for Figure 1 The diagram shows the structure of the filter screen in the integrated device for purifying filter residue from a mine gas extraction pipe.

[0023] The corresponding names of the attached figures are as follows: 1-Frame, 2-First filter box, 3-Second filter box, 4-Third filter box, 5-Cold water tank, 6-Purification tank, 7-Inlet pipe, 8-Exhaust pipe, 9-Drain pipe, 10-Drain valve, 11-First control valve, 12-Air pressure sensor, 13-First alarm, 14-Branch pipe, 15-Second control valve, 16-Filter assembly, 17-Water level sensor, 18-Second alarm, 19-Filter screen, 20-Frame, 21-Filter screen. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments of the present invention include, but are not limited to, the following embodiments.

[0025] Example 1:

[0026] like Figure 1 As shown, the integrated device for purifying filter residue in a mine gas extraction pipe provided by this utility model includes: a frame 1, which is equipped with a first filter box 2, a second filter box 3, a third filter box 4, a cold water tank 5, and a purification box 6. An air inlet pipe 7 is installed on the top of the first filter box 2 and is connected to the extraction pipeline. A one-way valve is installed on the connecting pipe between the cold water tank 5 and the purification box 6. An exhaust pipe 8 is installed on the top of the purification box 6 and is connected to the extraction pipeline. The purification box 6 contains an adsorbent composed of a mixture of activated carbon, zeolite molecular sieve, and carbon molecular sieve. This adsorbent can adsorb impurities in the gas, thereby purifying the gas content. A refrigeration device is installed at the bottom of the cold water tank 5. During use, the gas in the extraction pipeline passes through the air inlet pipe 7 and is filtered in sequence through the first filter box 2, the second filter box 3, and the third filter box 4 to remove coal ash from the gas. Then the gas enters the cold water tank 5, where water vapor in the gas condenses and collects at the bottom of the cold water tank 5 at a low temperature, thus removing water vapor from the gas. The gas then enters the purification tank 6 through the pipeline, where it reacts with the adsorbent in the purification tank 6 to remove impurities from the gas and purify the gas content. The purified gas is then connected to the downstream section of the extraction pipeline through the exhaust pipe 8 and discharged to the ground for use.

[0027] By setting up a first filter box 2, a second filter box 3, a third filter box 4, a cold water tank 5, and a purification tank 6, the extracted gas can be filtered and dehumidified. Furthermore, the adsorbent in the purification tank 6 is used to remove impurities from the gas, further purifying the gas and effectively increasing the extraction concentration of coal mine gas.

[0028] Example 2:

[0029] The first filter box 2, the second filter box 3, and the third filter box 4 are fitted with detachable filter screens 19 that are sealed and inserted into their sides. It is worth noting that the mesh size of the filter screens 19 used in the first filter box 2, the second filter box 3, and the third filter box 4 increases sequentially. During use, the coal ash in the gas is intercepted by the filter screens 19 used in the first filter box 2, the second filter box 3, and the third filter box 4 in sequence according to the particle diameter, forming a multi-stage filtration.

[0030] By installing filter screens 19 with different mesh sizes on the first filter box 2, the second filter box 3, and the third filter box 4, multi-stage filtration can be formed, reducing clogging.

[0031] Example 3:

[0032] like Figure 1 As shown, a drain pipe 9 is installed on one side of the cold water tank 5, and a drain valve 10 is installed on the drain pipe 9. When in use, the drain valve 10 can be opened by a timer or manually to drain the water accumulated in the cold water tank 5.

[0033] By installing a drain pipe 9 and a drain valve 10 on one side of the cold water tank 5, the water accumulated in the cold water tank 5 can be easily drained.

[0034] Example 4:

[0035] like Figure 1 As shown, a first control valve 11 and a pressure sensor 12 are installed on the air inlet pipe 7, and a first alarm 13 is installed on the top of the first filter box 4. After long-term use, coal ash may clog the filter screen 19, reducing gas permeability and increasing the air pressure inside the air inlet pipe 7. When the pressure sensor 12 detects that the air pressure inside the pipe has dropped to a threshold, the first alarm 13 will sound an audible and visual alarm, reminding the operator to replace or clean the filter screen 19. For replacement, the first control valve 11 is closed, and then the filter screen 19 can be replaced.

[0036] By setting the first control valve 11, the air pressure sensor 12 and the first alarm 13, the filter screen 19 can be replaced conveniently and in a timely manner.

[0037] Example 5:

[0038] like Figure 1 As shown, a branch pipe 14 is installed between the intake pipe 7 and the exhaust pipe 8. A second control valve 15 and a filter assembly 16 are installed on the branch pipe 14. The filter assembly 16 is a simple gas filter and cannot be used for a long time. When in use, referring to the description in Embodiment 4, after closing the first control valve 11, the second control valve 15 is opened. The gas in the intake pipe 7 is simply filtered by the filter assembly 16 on the branch pipe 14 and then enters the exhaust pipe 8. This circuit plays a temporary substitute for filtration, so that the extraction pipeline does not need to be interrupted and thus will not affect the gas extraction.

[0039] By installing a branch pipe 14, a second control valve 15, and a filter assembly 16 between the intake pipe 7 and the exhaust pipe 8, a temporary gas filtration function is achieved, so that the gas extraction operation does not need to be interrupted when the filter screen 19 is replaced.

[0040] Example 6:

[0041] like Figure 1 As shown, a water level sensor 17 is installed on one side of the cold water tank 5, and a second alarm 18 is installed on the top of the first filter box 2. The water level sensor 17 is connected to the second alarm 18. When in use, when the water level in the cold water tank 5 reaches the height of the water level sensor 17, the second alarm 18 will emit an audible and visual alarm to remind the operator to drain the cold water tank 5.

[0042] By setting up a water level sensor 17 and a second alarm 18, it is easy to remind personnel to drain the cold water tank 5.

[0043] Example 7:

[0044] like Figure 2 As shown, the filter screen 19 includes a frame 20 and a filter screen 21 installed inside the frame 19. The filter screen 21 is a polyhedral structure with a concave center and high edges. When in use, gas passes through the filter screen 21, and the filter screen 21 intercepts large particles of coal ash. The coal ash will slowly and automatically gather towards the center, thereby extending the service life of the filter screen 19 and facilitating the cleaning of the filtered coal ash.

[0045] By setting the frame 20 and the filter screen 21 with a polyhedral structure, the service life of the filter screen 19 can be extended, and the filtered coal slag can be cleaned up in a centralized manner.

[0046] Working principle: During use, the gas in the extraction pipeline passes through the inlet pipe 7 and is filtered in sequence through the first filter box 2, the second filter box 3, and the third filter box 4 to remove coal ash from the gas. Then the gas enters the cold water tank 5, where water vapor in the gas condenses and collects at the bottom of the cold water tank 5, thus removing water vapor from the gas. The gas then enters the purification tank 6 through the pipeline, where it reacts with the adsorbent to remove impurities and purify the gas content. The purified gas is then connected to the downstream section of the extraction pipeline through the exhaust pipe 8 and discharged to the ground for use.

Claims

1. A mine gas drainage pipe filter residue purification integrated device, characterized in that, Include: Frame (1), the frame (1) is provided with first filter box (2), second filter box (3), third filter box (4), cold water tank (5) and purification tank (6), the top of the first filter box (2) is installed into air inlet pipe (7), the cold water tank (5) is connected with purification tank (6), the top of the purification tank (6) is installed exhaust pipe (8), the adsorbent is placed in the purification tank (6); The adsorbent is a mixture of activated carbon, zeolite molecular sieve and carbon molecular sieve.

2. The integrated device for filtering and purifying the residue of the gas drainage pipe for mine according to claim 1, characterized in that, The side of the cold water tank (5) is installed with a drain pipe (9), and the drain valve (10) is installed on the drain pipe (9).

3. The integrated device for filtering and purifying the residue of the gas drainage pipe for mine according to claim 1, characterized in that, The air inlet pipe (7) is installed with a first control valve (11) and an air pressure sensor (12), and a first alarm (13) is installed on the top of the first filter box (2).

4. The integrated device for filtering and purifying the residue of the gas drainage pipe for mine according to claim 1, characterized in that, The branch pipe (14) is installed between the air inlet pipe (7) and the exhaust pipe (8), the second control valve (15) and the filter assembly (16) are installed on the branch pipe (14).

5. The integrated device for filtering and purifying the residue of the gas drainage pipe for mine according to claim 1, characterized in that, The side of the cold water tank (5) is installed with a water level sensor (17), and a second alarm (18) is installed on the top of the first filter box (2).

6. The integrated device for filtering and purifying the residue of the gas drainage pipe for mine of claim 1, wherein, The first filter box (2), the second filter box (3), the third filter box (4) side are all inserted and installed with filter screen (19).

7. The integrated device for filtering and purifying the residue of the gas drainage pipe for mine according to claim 6, characterized in that, The filter screen (19) comprises a frame (20) and a filter screen (21), and the filter screen (21) is a polyhedral structure with a concave middle and high periphery.

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