A pressure relief gas extraction device based on floor extraction lane

Abstract

The utility model provides a kind of based on pressure relief gas extraction device of floor extraction lane, it is related to the technical field of pressure relief gas extraction device based on floor extraction lane, and it includes: extraction mechanism, the extraction mechanism includes extraction pipe, one end of the extraction pipe is fixedly connected with fixed pipe, one end of the fixed pipe is equipped with connecting pipe, gas hole is opened in the fixed pipe, gas extraction hole is opened in the connecting pipe, placing hole is opened in the fixed pipe, the inboard of placing hole is equipped with embedded block, the outer surface of embedded block is sleeved with sealing washer.The utility model, by setting extraction mechanism, so that extraction pipe can conveniently block gas after gas extraction, whereby gas will not leak to other areas through extraction pipe, and then will not cause gas leakage, will not cause impact to the mining safety of coal mine, and also can make the practicality and safety of the extraction pipe higher.

Description

Technical Field

[0001] This utility model relates to the technical field of depressurized gas extraction devices based on bottom plate extraction roadways, and particularly to a depressurized gas extraction device based on bottom plate extraction roadways. Background Technology

[0002] Decompression-relief gas extraction based on the floor drainage roadway is a key regional control technology in the field of coal mine gas management. It is mainly applied to coal seams with coal and gas outburst risks, especially during the mining of lower protective layers. Its core principle is: by excavating a dedicated roadway (i.e., floor drainage roadway) in the floor strata below the coal seam before mining, and using the fractures in the overlying coal and rock strata caused by mining as channels, a large amount of gas desorbed and transported due to decompression is efficiently extracted.

[0003] In existing gas drainage construction based on bottom-plate drainage roadways, the threaded end of the drainage pipe is inserted into the coal seam until the drainage end of the pipe is placed in the gas area. Then, a drainage machine is threadedly connected to the drainage pipe, and the gas is extracted using the drainage pipe. However, the connection end of the existing drainage pipe is open, and it is not easy to seal it after the gas is extracted. This causes gas to continuously flow out to other areas through the drainage pipe, resulting in gas leakage and affecting coal mining. Therefore, the existing drainage pipes, which do not have the function of convenient gas sealing, are inconvenient to use. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing coal mine gas drainage systems, which use extraction pipes that do not have a convenient function of sealing gas, and to provide a pressure-relief gas extraction device based on a floor extraction roadway.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a depressurization gas extraction device based on a bottom plate extraction roadway, comprising: an extraction mechanism, the extraction mechanism including an extraction pipe, one end of the extraction pipe being fixedly connected to a fixing pipe, one end of the fixing pipe being provided with a connecting pipe, the fixing pipe having an air delivery hole, the connecting pipe having an air extraction hole, the fixing pipe having a placement hole, the inner side of the placement hole being provided with an embedding block, the outer surface of the embedding block being fitted with a sealing gasket, the connecting pipe having a threaded hole, the inside of the fixing pipe being provided with an auxiliary mechanism, the auxiliary mechanism including a rotating column, the inner wall of the rotating column being slidably connected to a sliding rod, one end of the sliding rod being fixedly connected to a limit plate, and the outer surface of the sliding rod being fitted with a spring.

[0006] In a preferred embodiment, the embedded block is fixedly connected to the connecting tube, the sealing gasket is fixedly connected to the embedded block, the sealing gasket is sleeved inside the placement hole, the sealing gasket is slidably connected to the inner wall of the fixed tube, and a collar is sleeved on the outer surface of the connecting tube, the collar being fixedly connected to the connecting tube.

[0007] In a preferred embodiment, the rotating column is rotatably connected to the inner wall of the fixed tube, the sliding rod is fixedly connected to the connecting tube, and a rotating block is provided at one end of the rotating column, the rotating block being fixedly connected to the rotating column.

[0008] In a preferred embodiment, the rotating block is sleeved inside the fixed tube, the rotating block is rotatably connected to the inner wall of the fixed tube, and one end of the rotating column is provided with a rotating block.

[0009] In a preferred embodiment, the rotating block is fixedly connected to the rotating column, and limiting blocks are provided on both sides of the rotating block.

[0010] In a preferred embodiment, there are two limiting blocks, which are fixedly connected to the inner wall of the fixed tube.

[0011] In a preferred embodiment, the two ends of the spring are fixedly connected to the outer surface of the limiting plate and the inner wall of the rotating column, respectively.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows: This invention, by setting up an extraction mechanism, allows the extraction pipe to conveniently seal the gas after extraction, thus preventing gas from leaking into other areas and avoiding any impact on coal mine safety. It also enhances the practicality and safety of the extraction pipe. The invention includes an embedding block and a sealing gasket, which are embedded and engaged within the gas inlet and outlet holes. The sealing gasket fills the gap between the embedding block and the inner wall of the fixed pipe, ensuring that gas does not leak out through this gap. An auxiliary mechanism, which works in conjunction with a connecting pipe, allows the connecting pipe to be rotated and adjusted according to usage. Attached Figure Description

[0013] Figure 1 A perspective view of a pressure relief gas extraction device based on a bottom plate extraction tunnel provided by this utility model.

[0014] Figure 2 This utility model provides a schematic diagram of the disassembled gas extraction mechanism of a pressure relief gas extraction device based on a bottom plate extraction roadway.

[0015] Figure 3This utility model provides a schematic diagram of the installation of an embedded block for a pressure relief gas extraction device based on a bottom plate extraction roadway.

[0016] Figure 4 A schematic diagram of the rotating block installation of a depressurization gas extraction device based on a bottom plate extraction roadway provided by this utility model.

[0017] Figure 5 A schematic diagram of the spring installation of a pressure relief gas extraction device based on a bottom plate extraction roadway provided by this utility model.

[0018] Legend: 1. Extraction mechanism; 2. Auxiliary mechanism; 11. Extraction pipe; 12. Fixed pipe; 13. Connecting pipe; 14. Gas delivery port; 15. Gas extraction port; 16. Placement hole; 17. Embedded block; 18. Sealing gasket; 19. Threaded hole; 101. Collar; 21. Rotating column; 22. Sliding rod; 23. Limiting plate; 24. Spring; 25. Rotating block; 26. Rotating block; 27. Limiting block. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example 1 like Figures 1-5 As shown, this utility model provides a technical solution: a depressurization gas extraction device based on a bottom plate extraction roadway, comprising: an extraction mechanism 1, the extraction mechanism 1 including an extraction pipe 11, one end of the extraction pipe 11 is fixedly connected to a fixing pipe 12, one end of the fixing pipe 12 is provided with a connecting pipe 13, the fixing pipe 12 is provided with a gas delivery hole 14, the connecting pipe 13 is provided with a gas extraction hole 15, the fixing pipe 12 is provided with a placement hole 16, the inner side of the placement hole 16 is provided with an embedding block 17, the outer surface of the embedding block 17 is fitted with a sealing gasket 18, the connecting pipe 13 is provided with a threaded hole 19, the embedding block 17 is fixedly connected to the connecting pipe 13, the sealing gasket 18 is fixedly connected to the embedding block 17, the sealing gasket 18 is fitted inside the placement hole 16, the sealing gasket 18 is slidably connected to the inner wall of the fixing pipe 12, the outer surface of the connecting pipe 13 is fitted with a collar 101, the collar 101 is fixedly connected to the connecting pipe 13.

[0021] In this embodiment, a fixed pipe 12 is provided, with a gas delivery hole 14 on the fixed pipe 12 and a gas extraction hole 15 on the connecting pipe 13. When the gas delivery hole 14 and the gas extraction hole 15 are in a mating state, the gas transmitted through the extraction pipe 11 can be effectively transported to the outlet end of the connecting pipe 13 and effectively extracted by the extraction machine threadedly connected to the connecting pipe 13. An embedded block 17 and a sealing gasket 18 are provided, and the embedded block 17 and the sealing gasket 18 can be embedded and engaged inside the gas delivery hole 14 and the placement hole 16. At the same time, the sealing gasket 18 can seal the gap between the embedded block 17 and the inner wall of the fixed pipe 12. The filling ensures that the gas does not leak out through the gap between the embedded block 17 and the fixed pipe 12. When the embedded block 17 and the sealing gasket 18 are placed in the gas delivery hole 14, no gas will be delivered from the fixed pipe 12. When the embedded block 17 and the sealing gasket 18 are placed in the placement hole 16, the gas delivery hole 14 and the extraction hole 15 will be in a docking state to ensure smooth gas delivery. The threaded hole 19 is provided so that the connecting pipe 13 can be firmly connected to the suction pipe of the extraction machine. In addition, the collar 101 is provided so that the connecting pipe 13 can be rotated and adjusted more conveniently.

[0022] Example 2 like Figures 1-5 As shown, the fixed tube 12 is provided with an auxiliary mechanism 2 inside. The auxiliary mechanism 2 includes a rotating column 21. A sliding rod 22 is slidably connected to the inner wall of the rotating column 21. A limiting piece 23 is fixedly connected to one end of the sliding rod 22. A spring 24 is sleeved on the outer surface of the sliding rod 22. The rotating column 21 is rotatably connected to the inner wall of the fixed tube 12. The sliding rod 22 is fixedly connected to the connecting tube 13. A rotating block 25 is provided at one end of the rotating column 21. The rotating block 25 is fixedly connected to the rotating column 21 and is sleeved inside the fixed tube 12. The rotating block 25 is rotatably connected to the inner wall of the fixed tube 12. A rotating block 26 is provided at one end of the rotating column 21. The rotating block 26 is fixedly connected to the rotating column 21. Limiting blocks 27 are provided on both sides of the rotating block 26. There are two limiting blocks 27. The limiting blocks 27 are fixedly connected to the inner wall of the fixed tube 12.

[0023] In this embodiment, an auxiliary mechanism 2 is provided, which can be used in conjunction with the connecting pipe 13, allowing the connecting pipe 13 to be rotated and adjusted according to usage. A rotating block 25 is provided, which can rotate with the rotating column 21, so that the rotating column 21 will not detach from the fixed pipe 12 while rotating. A sliding rod 22 is provided, and the cross-section of the sliding rod 22 is rectangular, so that when the connecting pipe 13 rotates, the sliding rod 22 can drive the rotating column 21 to rotate simultaneously. In addition, a rotating block 26 and a limiting block 27 are provided, and there are two limiting blocks 27. The limiting blocks 27 can block the rotating block 26, so that when the rotating block 26 rotates with the rotating column 21 and the sliding rod 22, it can assist the connecting pipe 13, ensuring that the rotation adjustment of the connecting pipe 13 is more convenient and that there is no over-rotation or over-reset.

[0024] Working principle: like Figures 1-5 As shown, in use, the extraction pipe 11 is first installed into the borehole of the coal seam, and the sealing material used in existing gas extraction processes is used to seal the gap between the extraction pipe 11 and the borehole. Then, if extraction is required, the connecting pipe 13 can be pulled using the collar 101. At this time, the connecting pipe 13 will cause the embedded block 17 and the sealing gasket 18 to disengage from the gas outlet 14 on the fixed pipe 12. Simultaneously, the connecting pipe 13 will pull the sliding rod 22, allowing the sliding rod 22 to drive the limiting piece 23 to slide inside the rotating column 21 and compress the spring 24. Thus, the spring 24 generates elastic force. Then, the connecting pipe 13 is rotated, causing the embedded block 17 and the sealing gasket 18 to rotate. Simultaneously, the connecting pipe 13 can also use the sliding rod 22 to drive the rotating column 21... The rotating column 21, with the assistance of the rotating block 25, can drive the rotating block 26 to rotate counterclockwise until the rotating block 26 is blocked by one of the limiting blocks 27. At this time, the embedded block 17 and the sealing gasket 18 can be placed in the placement hole 16 opened on the fixed pipe 12. At this time, the connecting pipe 13 is slowly released, and the elastic force of the spring 24 can be continuously released until the embedded block 17 and the sealing gasket 18 can be engaged into the interior of the placement hole 16. At this time, the gas supply hole 14 opened on the fixed pipe 12 can be docked with the gas extraction hole 15 opened on the connecting pipe 13. Then, the gas in the extraction pipe 11 can be transported to the threaded hole 19 opened on the connecting pipe 13 through the gas supply hole 14 and the gas extraction hole 15. Then, the extraction machine is threadedly connected to the threaded hole 19 opened on the connecting pipe 13, so that the extraction machine can extract the gas.

[0025] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A decompression gas extraction device based on a floor extraction roadway, characterized in that, include: The extraction mechanism (1) includes an extraction pipe (11), one end of which is fixedly connected to a fixed pipe (12), one end of which is provided with a connecting pipe (13), a gas delivery hole (14) is provided on the fixed pipe (12), a gas extraction hole (15) is provided on the connecting pipe (13), a placement hole (16) is provided on the fixed pipe (12), an embedding block (17) is provided on the inner side of the placement hole (16), a sealing gasket (18) is sleeved on the outer surface of the embedding block (17), a threaded hole (19) is provided on the connecting pipe (13), and an auxiliary mechanism (2) is provided inside the fixed pipe (12). The auxiliary mechanism (2) includes a rotating column (21), a sliding rod (22) is slidably connected to the inner wall of the rotating column (21), a limit plate (23) is fixedly connected to one end of the sliding rod (22), and a spring (24) is sleeved on the outer surface of the sliding rod (22).

2. The depressurization gas extraction device based on a bottom plate extraction roadway according to claim 1, characterized in that: The embedded block (17) is fixedly connected to the connecting tube (13), the sealing gasket (18) is fixedly connected to the embedded block (17), the sealing gasket (18) is sleeved inside the placement hole (16), the sealing gasket (18) is slidably connected to the inner wall of the fixing tube (12), and a collar (101) is sleeved on the outer surface of the connecting tube (13), the collar (101) is fixedly connected to the connecting tube (13).

3. The depressurization gas extraction device based on a bottom plate extraction roadway according to claim 2, characterized in that: The rotating column (21) is rotatably connected to the inner wall of the fixed tube (12), the sliding rod (22) is fixedly connected to the connecting tube (13), and a rotating block (25) is provided at one end of the rotating column (21), and the rotating block (25) is fixedly connected to the rotating column (21).

4. A pressure-relief gas extraction device based on a floor extraction roadway according to claim 3, characterized in that: The rotating block (25) is fitted inside the fixed tube (12), and the rotating block (25) is rotatably connected to the inner wall of the fixed tube (12). One end of the rotating column (21) is provided with a rotating block (26).

5. A pressure-relief gas extraction device based on a floor extraction roadway according to claim 4, characterized in that: The rotating block (26) is fixedly connected to the rotating column (21), and limiting blocks (27) are provided on both sides of the rotating block (26).

6. A pressure-relief gas extraction device based on a floor extraction roadway according to claim 5, characterized in that: There are two limiting blocks (27), and the limiting blocks (27) are fixedly connected to the inner wall of the fixed tube (12).

7. A pressure-relief gas extraction device based on a floor extraction roadway according to claim 1, characterized in that: The two ends of the spring (24) are fixedly connected to the outer surface of the limiting piece (23) and the inner wall of the rotating column (21), respectively.

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