CN210087376U

CN210087376U - Gas extraction equipment for coal mine

Info

Publication number: CN210087376U
Application number: CN201920990992.5U
Authority: CN
Inventors: 许国胜; 范晓杰; 李回贵; 关金锋
Original assignee: Guizhou University of Engineering Science
Current assignee: Guizhou University of Engineering Science
Priority date: 2019-06-27
Filing date: 2019-06-27
Publication date: 2020-02-18
Anticipated expiration: 2029-06-27

Abstract

The utility model discloses a gas drainage equipment for coal mine relates to gas drainage technical field, include first outer tube, second outer tube, take out and adopt hole and arc head, one side of first outer tube is provided with the second outer tube, and the junction of first outer tube and second outer tube is provided with coupling assembling, the one end fixed mounting of second outer tube has the arc head, and the inside of second outer tube set up flutedly, the inside slip of recess has protruding strip. The utility model discloses a coupling assembling can the person of facilitating the use splice fast first outer tube and second outer tube, prevent that the coal seam is too thick to lead to taking out the problem that adopts hole and arc head can't pass, do benefit to and normally take out gas, through the combined use of protruding strip and recess, can slide the inner tube to the inside of second outer tube, prevent that the second outer tube from appearing the leakage phenomenon at drilling in-process, the leakproofness of body can be improved greatly to the design of bilayer formula, the leakage probability of gas has been reduced.

Description

Gas extraction equipment for coal mine

Technical Field

The utility model relates to a gas takes out and adopts technical field, specifically is a gas takes out and adopts equipment for coal mine.

Background

Coal seam gas extraction is a main measure for reducing the gas concentration of a working face and is also an important guarantee for mine safety production, and most of the existing gas extraction uses an extraction pipe, and the extraction pipe is conveyed to a gas area to extract gas in a rotating mode.

However, the existing extraction pipes are limited in length and difficult to penetrate through a thick coal seam for gas extraction, and meanwhile, the existing extraction pipes are mostly extracted in a single-layer mode, so that the defect that when the outer pipe leaks in the drilling process, gas leakage can be caused, and certain potential safety hazards exist. Therefore, the technical personnel in the field provide a gas extraction device for coal mines so as to solve the problems in the background technology.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a gas drainage equipment for coal mine to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a gas drainage equipment for coal mine, includes first outer tube, second outer tube, takes out and adopts hole and arc head, one side of first outer tube is provided with the second outer tube, and the junction of first outer tube and second outer tube is provided with coupling assembling, the one end fixed mounting of second outer tube has the arc head, and the inside of second outer tube sets up flutedly, the inside of recess slides there is protruding strip, the last fixed surface of protruding strip installs the inner tube, the outside of second outer tube and inner tube all runs through and is provided with takes out and adopts the hole.

As a further aspect of the present invention: the connecting assembly comprises a first thread head, a first sealing ring, a connecting seat, a second sealing ring and a second thread head, wherein the first thread head is fixedly arranged at one end of the connecting seat, the second thread head is fixedly arranged at the other end of the connecting seat, the first sealing ring is sleeved outside the first thread head, and the second sealing ring is sleeved outside the second thread head.

As a further aspect of the present invention: the second thread head and the first thread head are equal in size, and the thread directions of the second thread head and the first thread head are the same.

As a further aspect of the present invention: the inner pipe and the second thread head are connected through threads, and the inner pipe and the protruding strips are arranged in an integrated mode.

As a further aspect of the present invention: the diameters of the first outer pipe, the first sealing ring, the connecting seat, the second sealing ring and the second outer pipe are equal.

As a further aspect of the present invention: the recess is circular-arc, and recess and protruding strip looks adaptation, the quantity of recess and protruding strip is two.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model can facilitate the user to quickly splice the first outer pipe and the second outer pipe through the connecting component, thereby preventing the problem that the extraction hole and the arc-shaped head can not pass due to the over-thick coal seam, and being beneficial to normally extracting the gas;

2. through the combination use of protruding strip and recess, can slide the inside to the second outer tube with the inner tube, prevent that the second outer tube from appearing leaking the phenomenon in drilling process, the leakproofness of body can be improved greatly to the design of bilayer formula, has reduced the leakage probability of gas.

Drawings

FIG. 1 is a schematic structural diagram of a gas extraction device for a coal mine;

fig. 2 is a schematic structural view of a convex strip of gas extraction equipment for coal mines.

In the figure: 1. a first outer tube; 2. a first thread start; 3. a first seal ring; 4. a connecting seat; 5. a second seal ring; 6. a second thread start; 7. an inner tube; 8. a second outer tube; 9. extracting holes; 10. an arc-shaped head; 11. a connecting assembly; 12. a raised strip; 13. and (4) a groove.

Detailed Description

Referring to fig. 1-2, in an embodiment of the present invention, a gas extraction device for coal mine includes a first outer tube 1, a second outer tube 8, an extraction hole 9, and an arc head 10, the second outer tube 8 is disposed on one side of the first outer tube 1, a connection assembly 11 is disposed at a connection position of the first outer tube 1 and the second outer tube 8, the connection assembly 11 includes a first screw head 2, a first seal ring 3, a connection seat 4, a second seal ring 5, and a second screw head 6, the first screw head 2 is fixedly mounted at one end of the connection seat 4, the second screw head 6 is fixedly mounted at the other end of the connection seat 4, the first seal ring 3 is sleeved outside the first screw head 2, the second seal ring 5 is sleeved outside the second screw head 6, the second screw head 6 and the first screw head 2 have the same size, the second screw head 6 and the first screw head 2 have the same screw direction, the inner tube 7 and the second screw head 6 are connected by screw threads, and inner tube 7 and protruding 12 formula settings as an organic whole of protruding, the diameter homogeneous phase of first outer tube 1, first sealing washer 3, connecting seat 4, second sealing washer 5 and second outer tube 8 equals, can the person of facilitating the use splice first outer tube 1 and second outer tube 8 fast through coupling assembling 11, prevents that the coal seam is too thick to lead to taking out the problem that adopts hole 9 and arc head 10 can't pass, does benefit to and normally takes out gas to adopt.

In fig. 1 and 2: one end fixed mounting of second outer tube 8 has arc head 10, and recess 13 has been seted up to the inside of second outer tube 8, the inside of recess 13 slides there is protruding strip 12, the last fixed surface of protruding strip 12 installs inner tube 7, the outside of second outer tube 8 and inner tube 7 all runs through and is provided with takes out and adopts hole 9, recess 13 is circular-arcly, and recess 13 and protruding strip 12 looks adaptation, the quantity of recess 13 and protruding strip 12 is two, use through the combination of protruding strip 12 and recess 13, can slide inner tube 7 to the inside of second outer tube 8, prevent that second outer tube 8 from appearing the leakage phenomenon in drilling process, the leakproofness of body can be improved greatly to the design of bilayer formula, the leakage probability of gas has been reduced.

The utility model discloses a theory of operation is: the user firstly slides in the protruding strips 12 along the grooves 13, at this time, the inner pipe 7 can be placed inside the second outer pipe 8, and as the materials of the second outer pipe 8 and the inner pipe 7 are the same, the inner pipe 7 can be slid into the second outer pipe 8 by the combined use of the protruding strips 12 and the grooves 13, the leakage phenomenon of the second outer pipe 8 in the drilling process is prevented, the sealing performance of the pipe body can be greatly improved by the double-layer design mode, the leakage probability of gas is reduced, the user firstly rotates the first outer pipe 1 and the second outer pipe 8 clockwise simultaneously, at this time, the first thread head 2 and the second thread head 6 are respectively butted with the inner pipe 7 in the first outer pipe 1 and the second outer pipe 8 until the first outer pipe 1 is tightly attached to the first sealing ring 3, the second outer pipe 8 is tightly attached to the second sealing ring 5, at this time, the sealing performance between the first outer pipe 1 and the connecting seat 4 can be increased by the first sealing ring 3, can increase the sealing performance between second outer tube 8 and the connecting seat 4 through second sealing washer 5, can the person of facilitating the use carry out quick concatenation to first outer tube 1 and second outer tube 8 through coupling assembling 11, prevent that the coal seam is too thick to lead to adopting the problem that hole 9 and arc head 10 can't pass, do benefit to and normally take out gas, user clockwise rotation first outer tube 1 and second outer tube 8 afterwards, bore first outer tube 1 and second outer tube 8 to the coal seam this moment, it can to pass the coal seam until arc head 10 and extraction hole 9, can adopt gas this moment through adopting hole 9.

The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a gas drainage equipment for coal mine, includes first outer tube (1), second outer tube (8), takes out and adopts hole (9) and arc head (10), its characterized in that, one side of first outer tube (1) is provided with second outer tube (8), and the junction of first outer tube (1) and second outer tube (8) is provided with coupling assembling (11), the one end fixed mounting of second outer tube (8) has arc head (10), and the inside of second outer tube (8) is seted up flutedly (13), the inside slip of recess (13) has protruding strip (12), the last fixed surface of protruding strip (12) installs inner tube (7), the outside of second outer tube (8) and inner tube (7) all runs through and is provided with takes out and adopts hole (9).

2. The coal mine gas extraction equipment according to claim 1, wherein the connection assembly (11) comprises a first thread head (2), a first sealing ring (3), a connection seat (4), a second sealing ring (5) and a second thread head (6), the first thread head (2) is fixedly installed at one end of the connection seat (4), the second thread head (6) is fixedly installed at the other end of the connection seat (4), the first sealing ring (3) is sleeved outside the first thread head (2), and the second sealing ring (5) is sleeved outside the second thread head (6).

3. The gas extraction equipment for the coal mine according to claim 2, wherein the second thread head (6) and the first thread head (2) are equal in size, and the thread directions of the second thread head (6) and the first thread head (2) are the same.

4. The gas extraction equipment for the coal mine according to claim 2, wherein the inner pipe (7) and the second threaded head (6) are connected through threads, and the inner pipe (7) and the protruding strips (12) are integrally arranged.

5. The coal mine gas extraction equipment according to claim 2, wherein the diameters of the first outer pipe (1), the first sealing ring (3), the connecting seat (4), the second sealing ring (5) and the second outer pipe (8) are equal.

6. The gas extraction equipment for the coal mine according to claim 1, wherein the grooves (13) are arc-shaped, the grooves (13) are matched with the protruding strips (12), and the number of the grooves (13) and the number of the protruding strips (12) are two.