Device for treating accumulated water and accumulated slag in gas drainage drill hole

Abstract

The utility model belongs to the technical field of coal mine gas extraction, and discloses a gas drainage drill hole accumulated water and slag treatment device which comprises a water and slag storage box body, a slag accumulation net and a first layer of filter net are arranged in the water and slag storage box body from bottom to top, and a water and slag inlet, a water outlet and a slag outlet are formed in the side wall of the water and slag storage box body; the water and slag inlet is formed between the slag deposition net and the first-layer filter net and is used for mounting a first connecting pipe; the water outlet is formed in the bottom of the slag deposition net; the slag discharging opening is formed between the slag accumulating net and the first-layer filter net and is opposite to the water and slag inlet; a second connecting pipe is arranged at the top of the water and slag storage box and used for being connected with a negative pressure drainage pipe, and the negative pressure drainage pipe is used for sucking accumulated water and slag at the bottom of the gas drainage drill hole into the water and slag storage box through negative pressure. According to the utility model, the problem that the drainage pipeline is blocked due to accumulated water and coal slag after the drainage drill hole is opened is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal mine gas extraction, and in particular relates to a device for processing water and slag accumulation in a gas extraction borehole. Background Art

[0002] During coal mine gas extraction drilling, influenced by factors such as geological structure and coal seam conditions, drilling operations often encounter weak surrounding rock structures that become unstable after being disturbed by the drill bit, leading to hole collapse. This results in drilling failure and reduced drilling efficiency. Especially when drilling at negative angles, a large amount of water and unremovable drill cuttings remain at the bottom of the borehole, preventing the borehole protection pipe from reaching the bottom of the borehole. Furthermore, during the hole sealing and extraction process, a large amount of water and drill cuttings enter the extraction pipeline, causing blockage and seriously affecting the extraction effect.

[0003] Therefore, it is necessary to provide a new type of gas extraction borehole water and slag treatment device to effectively treat the water and slag accumulation in the gas extraction borehole to avoid blockage. Utility Model Content

[0004] In order to solve the technical problems in the existing technology of slag removal and drainage difficulties in negative angle drilling of gas extraction boreholes, resulting in poor extraction effect and inability to guarantee extraction effect, the utility model proposes a gas extraction borehole water and slag accumulation treatment device to effectively treat the water and slag accumulation in the gas extraction borehole to avoid blockage.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a device for treating water and slag accumulation in a gas extraction drilling hole, comprising: a water and slag storage box, a slag net and a first layer of filter net are arranged in sequence from bottom to top in the water and slag storage box, and a water inlet and slag inlet, a drainage outlet and a slag discharge outlet are arranged on the side wall of the water and slag storage box; the water inlet and slag inlet are arranged between the slag net and the first layer of filter net, and are used to install a first connecting pipe, the first connecting pipe is used to be connected to the bottom of the gas extraction drilling hole, and the drainage outlet is arranged at the bottom of the slag net for drainage; the slag discharge outlet is arranged between the slag net and the first layer of filter net, and is arranged opposite to the water inlet and slag inlet; a second connecting pipe is provided on the top of the water and slag storage box, the second connecting pipe is used to connect to a negative pressure extraction pipe, and the negative pressure extraction pipe is used to suck the water and slag accumulated at the bottom of the gas extraction drilling hole into the water and slag storage box through negative pressure.

[0006] The slag collection net is arranged to be inclined, and the side thereof close to the water and slag inlet is higher than the side of the slag discharge outlet.

[0007] The device for treating accumulated water and slag in a gas extraction borehole further comprises a probe tube, which is arranged in the gas extraction borehole, one end of which is located at the bottom of the gas extraction borehole, and the other end is connected to the first connecting pipe.

[0008] The device for treating accumulated water and slag in a gas extraction borehole further comprises a valve arranged at the inlet of the first connecting pipe.

[0009] The drain port is arranged directly below the water and slag inlet.

[0010] The device for treating accumulated water and slag in a gas extraction borehole further comprises a second layer of filter screen, which is arranged above the first layer of filter screen.

[0011] A cleaning port is provided on the side wall of the water and slag storage box, and the cleaning port is located between the first layer of filter screen and the second layer of filter screen.

[0012] The mesh number of the second layer of filter is smaller than that of the first layer of filter.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The utility model proposes a device for treating accumulated water and slag in a gas extraction borehole. By arranging a filter screen and a slag net in a water and slag storage box, the accumulated water and slag at the bottom of the gas extraction borehole can be successfully separated. The slag net is used to discharge the slag, and the accumulated water is discharged from the bottom of the slag net box. Therefore, the utility model can clean up the water and coal slag accumulated at the bottom of the extraction borehole in time, and solve the problem of blockage of the extraction pipeline caused by accumulated water and coal slag after the extraction of the extraction borehole is opened. After being treated by the accumulated water and slag treatment device, the extraction borehole protection pipe can be smoothly installed to the bottom of the hole, thereby improving the extraction effect of the extraction borehole. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic structural diagram of a device for treating accumulated water and slag in a gas drainage borehole provided by an embodiment of the present utility model;

[0016] In the figure: 1-coal wall, 2-extraction drill hole, 3-probe pipe, 4-valve, 5-first connecting pipe, 6-water and slag storage box, 7-first layer of filter screen, 8-second layer of filter screen, 9-inlet of water and slag storage box, 10-drainage outlet, 11-slag accumulation net, 12-slag discharge outlet, 13-second connecting pipe, 14-negative pressure extraction pipe. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments; based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0018] like Figure 1As shown, the embodiment of the present invention provides a device for treating water and slag accumulation in a gas drainage borehole, comprising: a water and slag storage box 6, wherein a slag net 11 and a first layer of filter net 7 are sequentially arranged in the water and slag storage box 6 from bottom to top; a water and slag inlet 9, a water outlet 10 and a slag outlet 12 are arranged on the side wall of the water and slag storage box 6; the water and slag inlet 9 is arranged between the slag net 11 and the first layer of filter net 7, and is used to install a first connecting pipe 5, which is used to connect to At the bottom of the gas extraction borehole, the drain port 10 is arranged at the bottom of the slag net 11 for drainage; the slag discharge port 12 is arranged between the slag net 11 and the first layer of filter net 7, and is arranged opposite to the water and slag inlet 9 for slag discharge; a second connecting pipe 13 is provided on the top of the water and slag storage box 6, and the second connecting pipe 13 is used to connect the negative pressure extraction pipe 14, and the negative pressure extraction pipe 14 is used to suck the water and slag accumulated at the bottom of the gas extraction borehole into the water and slag storage box 6 through negative pressure.

[0019] Specifically, in this embodiment, the slag net 11 is arranged at an angle, and its side close to the water inlet and slag inlet 9 is higher than the side of the slag discharge port 12. After the accumulated water and slag enter from the water inlet and slag inlet 9, the accumulated water directly descends from the slag net 11 and is discharged through the drain port 10, while the accumulated slag descends along the inclined slag net 11 to the slag discharge port 12 for discharge.

[0020] Furthermore, the device for treating water and slag accumulation in a gas extraction borehole of this embodiment also includes a probe tube 3 , which is arranged in the gas extraction borehole 2 , one end of which is located at the bottom of the gas extraction borehole, and the other end is connected to the first connecting pipe 5 .

[0021] Furthermore, the device for treating water and slag accumulation in a gas drainage borehole of this embodiment further includes a valve 4 provided at the inlet of the first connecting pipe 5. The valve 4 can control the on / off connection between the first connecting pipe 5 and the bottom of the hole.

[0022] Specifically, in this embodiment, the drain port 10 is arranged directly below the water and slag inlet 9 .

[0023] Further, if Figure 1 As shown, the device for treating accumulated water and slag in a gas extraction borehole of this embodiment further includes a second layer of filter screen 8 , which is arranged above the first layer of filter screen 7 .

[0024] Furthermore, in this embodiment, a cleaning port is provided on the side wall of the water and slag storage box 6, and the cleaning port is located between the first filter screen 7 and the second filter screen 8. After the device has been operating for a period of time, the cleaning port can be opened to clean and discharge slag from the space between the first filter screen 7 and the second filter screen 8.

[0025] Furthermore, in this embodiment, the mesh size of the second filter screen 8 is smaller than that of the first filter screen 7. Furthermore, in this embodiment, the mesh diameter of the first filter screen 7 is 5 mm, and it primarily filters large lumps of coal and gangue within the borehole. The mesh diameter of the second filter screen 8 is 2-3 mm, and it primarily filters pulverized coal. The arrangement of two filter screens minimizes the possibility of small particles of coal slag being absorbed by the second connecting pipe 13 and causing blockage of the negative pressure discharge pipe 14. Furthermore, a third filter screen can be further provided above the second filter screen 8 as needed.

[0026] The working principle of the present invention is as follows: connect the first connecting pipe 5 to the probe 3 arranged in the gas extraction borehole 2, close the drain port 10 and the slag discharge port 12, and then open the valve 4. The accumulated water and slag in the gas extraction borehole 2 are extracted into the water and slag storage box 6 through the negative pressure extraction pipe 14. After processing one gas extraction borehole 2, close the valve 4, open the drain port 10 and the slag discharge port 12 to drain and discharge the water and slag storage box 6.

[0027] To sum up, the utility model proposes a device for treating accumulated water and slag in a gas extraction borehole. By arranging a filter screen and a slag net in a water and slag storage box, the accumulated water and slag at the bottom of the gas extraction borehole can be successfully separated. The slag is discharged using the slag net, and the accumulated water is discharged from the bottom of the slag net box. Therefore, the utility model can clean up the water and slag accumulated at the bottom of the extraction borehole in time, and solve the problem of blockage of the extraction pipeline caused by accumulated water and slag after the extraction of the extraction borehole is opened. After being treated by the accumulated water and slag treatment device, the extraction borehole protection pipe can be smoothly installed to the bottom of the hole, thereby improving the extraction effect of the extraction borehole.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for treating water and slag accumulation in a gas drainage borehole, characterized in that: include: A water and slag storage box (6) is provided with a slag net (11) and a first layer of filter net (7) in order from bottom to top in the water and slag storage box (6), and a water and slag inlet (9), a water outlet (10) and a slag outlet (12) are provided on the side wall of the water and slag storage box (6); the water and slag inlet (9) is provided between the slag net (11) and the first layer of filter net (7) and is used to install a first connecting pipe (5), the first connecting pipe (5) is used to be connected to the bottom of the gas extraction borehole, the water outlet (10) is provided to the bottom of the gas extraction borehole, and the water outlet (10) is provided to the bottom of the gas extraction borehole. The port (10) is provided at the bottom of the slag net (11) for draining water; the slag discharge port (12) is provided between the slag net (11) and the first layer of filter net (7), and is arranged opposite to the water and slag inlet (9); a second connecting pipe (13) is provided on the top of the water and slag storage box (6), and the second connecting pipe (13) is used to connect to the negative pressure extraction pipe (14), and the negative pressure extraction pipe (14) is used to suck the water and slag accumulated at the bottom of the gas extraction borehole into the water and slag storage box (6) through negative pressure.

2. A gas drainage borehole water and slag accumulation treatment device according to claim 1, characterized in that: The slag accumulation net (11) is arranged in an inclined manner, with the side thereof close to the water and slag inlet (9) being higher than the side of the slag discharge outlet (12).

3. A gas drainage borehole water and slag accumulation treatment device according to claim 1, characterized in that: It also includes a probe tube (3), which is arranged in the gas extraction borehole (2), one end of which is located at the bottom of the gas extraction borehole, and the other end is connected to the first connecting pipe (5).

4. A gas drainage borehole water and slag accumulation treatment device according to claim 1, characterized in that: It also includes a valve (4) arranged at the inlet of the first connecting pipe (5).

5. The device for treating water and slag accumulation in a gas drainage borehole according to claim 1, characterized in that: The drainage port (10) is arranged directly below the water and slag inlet (9).

6. A gas drainage borehole water and slag accumulation treatment device according to claim 1, characterized in that: It also includes a second layer of filter screen (8), which is arranged above the first layer of filter screen (7).

7. A gas drainage borehole water and slag accumulation treatment device according to claim 6, characterized in that: A cleaning port is provided on the side wall of the water and slag storage box (6), and the cleaning port is located between the first layer of filter screen (7) and the second layer of filter screen (8).

8. A device for treating accumulated water and slag in a gas drainage borehole according to claim 6, characterized in that: The mesh size of the second layer of filter screen (8) is smaller than that of the first layer of filter screen (7).

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