Coal mine gas extraction hole sealing device

Abstract

The utility model relates to a coal mine gas extraction hole sealing device which comprises a coal seam, a grouting block is movably installed in the coal seam, a grout seepage hole is formed in the outer portion of the grouting block, a connecting base is movably installed on the outer portion of the grouting block, a rotating cylinder is rotatably installed in the connecting base, a grouting pipe is movably installed in the rotating cylinder, and a grouting hole is formed in the grouting pipe. A push rod is movably installed in the grouting pipe, and a piston is fixedly installed outside the push rod. According to the coal mine gas extraction hole sealing device, after the grouting block goes deep into a hole of a coal seam and is adjusted to be in a horizontal state, the push rod and the piston can be driven to move by pushing the push plate, grouting liquid enters the grouting block from the left side of the grouting pipe, and through continuous grouting, the grouting liquid can flow to the outside of the grouting block along the grout seepage hole, so that the grouting effect is improved. Grouting can be stopped until the gap between the grouting block and the hole of the coal seam is filled, and the grouting pipe and the grouting block can be separated after the rotary drum is rotated, so that the hole plugging efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine gas, in particular to a hole sealing device for coal mine gas drainage. Background Technique

[0002] Coal mine gas is a mixed gas composed of methane, carbon dioxide, nitrogen, etc. that overflows from coal and surrounding rocks. During the mining process of coal mine gas, the coal mine gas will be extracted through drilling. However, after the extraction of coal mine gas, an extraction hole will be generated to prevent gas accidents. For gas drainage, it is necessary to seal the hole, and the hole sealing device is a structure for plugging the hole.

[0003] During the process of plugging the hole, concrete is usually directly injected into the hole. The thicker the concrete is stacked, the longer the drying time of the concrete. In order to improve the efficiency of hole plugging, a hole sealing device for coal mine gas drainage is proposed to solve the above problems. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a hole sealing device for coal mine gas drainage, which has the advantages of reducing the stacking of concrete and effectively improving the plugging efficiency, and solves the problem that during the process of plugging the hole, concrete is usually directly injected into the hole, and the thicker the concrete is stacked, the longer the drying time of the concrete, in order to improve the efficiency of hole plugging.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a hole sealing device for coal mine gas drainage, including a coal seam, a filling structure is arranged inside the coal seam, and a disassembly structure is arranged outside the filling structure;

[0006] The filling structure includes a grouting block, a slurry seepage hole, a connecting seat, a rotating cylinder, a grouting pipe, a push rod, a piston and a push plate. The grouting block is movably installed inside the coal seam, a slurry seepage hole is arranged outside the grouting block, a connecting seat is movably installed outside the grouting block, a rotating cylinder is rotatably installed inside the connecting seat, a grouting pipe is movably installed inside the rotating cylinder, a push rod is movably installed inside the grouting pipe, a piston is fixedly installed outside the push rod, and a push plate is fixedly installed outside the push rod;

[0007] The disassembly structure includes a fixing plate, a limiting shaft, a movable plate, a plug board and a limiting seat. The fixing plate is fixedly installed outside the rotating cylinder, the limiting shaft is fixedly installed outside the fixing plate, the movable plate is movably installed outside the limiting shaft, the plug board is hinged outside the movable plate, and the limiting seat is fixedly installed outside the grouting block.

[0008] Further, an insertion interface is provided on the right side of the grouting block, and the grouting pipe penetrates through the connecting seat and is inserted into the insertion interface.

[0009] Further, the grouting pipe penetrates through the rotating cylinder and is rotatably connected to the rotating cylinder, and the push rod penetrates through the grouting pipe and is movably connected to the grouting pipe.

[0010] Further, the piston is located inside the grouting pipe, and the left side of the rotating cylinder is rotatably connected to the inner left wall of the connecting seat.

[0011] Further, the insertion plate penetrates through the connecting seat and is movably connected to the connecting seat, and the insertion plate is inserted into the limiting seat.

[0012] Further, the number of the limiting shafts is two, and the two limiting shafts are respectively located on the upper and lower sides of the rotating cylinder.

[0013] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0014] For this coal mine gas drainage hole sealing device, the grouting block is inserted into the hole in the coal seam. After adjusting the grouting block to a horizontal state, pushing the push plate can drive the push rod and the piston to move, and the grouting liquid enters the inside of the grouting block from the left side of the grouting pipe. Through continuous grouting, the grouting liquid will flow out of the slurry seepage holes to the outside of the grouting block until the gap between the grouting block and the hole in the coal seam is filled, then the grouting can be stopped. After rotating the rotating cylinder, the grouting pipe can be separated from the grouting block, improving the sealing efficiency of the hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the structural plan view of the present utility model;

[0016] Figure 2 is the sectional view of the filling structure of the present utility model;

[0017] Figure 3 is the enlarged view of the disassembly structure of the present utility model.

[0018] In the figure: 1, coal seam; 2, filling structure; 201, grouting block; 202, slurry seepage hole; 203, connecting seat; 204, rotating cylinder; 205, grouting pipe; 206, push rod; 207, piston; 208, push plate; 3, disassembly structure; 301, fixing plate; 302, limiting shaft; 303, movable plate; 304, insertion plate; 305, limiting seat. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, in conjunction with the accompanying drawings in the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] Embodiment 1. In Figure 1 a coal mine gas drainage hole sealing device, which includes a coal seam 1. A filling structure 2 is arranged inside the coal seam 1, and a disassembly structure 3 is arranged outside the filling structure 2.

[0021] The grouting block 201 is horizontally located at the hole of the coal seam 1 in a vertical state. The slurry seepage holes 202 outside the grouting block 201 will be close to the inner wall of the hole of the coal seam 1. The concrete oozing out from the slurry seepage holes 202 will directly adhere to the inner wall of the hole of the coal seam 1. Until the concrete solidifies, the hole of the coal seam 1 can be blocked.

[0022] Embodiment 2. In Figure 2 a filling structure 2 includes a grouting block 201, slurry seepage holes 202, a connecting seat 203, a rotating cylinder 204, a grouting pipe 205, a push rod 206, a piston 207 and a push plate 208. The grouting block 201 is movably installed inside the coal seam 1. The slurry seepage holes 202 are arranged outside the grouting block 201. The connecting seat 203 is movably installed outside the grouting block 201. The rotating cylinder 204 is rotatably installed inside the connecting seat 203. The grouting pipe 205 is movably installed inside the rotating cylinder 204. The push rod 206 is movably installed inside the grouting pipe 205. The piston 207 is fixedly installed outside the push rod 206. The push plate 208 is fixedly installed outside the push rod 206.

[0023] The left side of the grouting pipe 205 extends deep into the grouting block 201. The concrete is pushed into the grouting block 201 through the push plate 208 until the gap between the grouting block 201 and the hole of the coal seam 1 completely disappears, and then the grouting can be stopped.

[0024] Embodiment 3. In Figure 3 a disassembly structure 3 includes a fixing plate 301, a limiting shaft 302, a movable plate 303, an inserting plate 304 and a limiting seat 305. The fixing plate 301 is fixedly installed outside the rotating cylinder 204. The limiting shaft 302 is fixedly installed outside the fixing plate 301. The movable plate 303 is movably installed outside the limiting shaft 302. The inserting plate 304 is hinged outside the movable plate 303. The limiting seat 305 is fixedly installed outside the grouting block 201.

[0025] After the grouting is completed, rotate the rotating cylinder 204. Then, without rotating the grouting pipe 205, the plug 304 can be retracted into the connecting seat 203, and the grouting pipe 205 can be driven to separate from the grouting block 201. By using the area of the grouting block 201 to replace the stacking of concrete in the hole, the area where the concrete needs to dry is reduced, and thus the efficiency of hole plugging can be improved.

[0026] In summary, for this coal mine gas drainage hole plugging device, the grouting block 201 is inserted into the hole of the coal seam 1. After adjusting the grouting block 201 to a horizontal state, pushing the push plate 208 can drive the push rod 206 and the piston 207 to move, and the grouting liquid enters the interior of the grouting block 201 from the left side of the grouting pipe 205. Through continuous grouting, the grouting liquid will flow along the slurry seepage holes 202 to the outside of the grouting block 201 until the gap between the grouting block 201 and the hole of the coal seam 1 is filled, and then the grouting can be stopped. After rotating the rotating cylinder 204, the grouting pipe 205 can be separated from the grouting block 201, improving the efficiency of hole plugging. This solves the problem that during the process of plugging holes, usually concrete is directly injected into the interior of the holes. The thicker the concrete is stacked, the longer the drying time of the concrete. In order to improve the efficiency of hole plugging.

[0027] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to this process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0028] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coal mine gas extraction and sealing device, comprising a coal seam (1), characterized in that: A filling structure (2) is provided inside the coal seam (1), and a disassembly structure (3) is provided outside the filling structure (2); The filling structure (2) comprises a grouting block (201), a grouting hole (202), a connecting seat (203), a rotating drum (204), a grouting pipe (205), a push rod (206), a piston (207) and a push plate (208); the grouting block (201) is movably installed inside the coal seam (1); a grouting hole (202) is provided outside the grouting block (201); a connecting seat (203) is movably installed outside the grouting block (201); a rotating drum (204) is rotatably installed inside the connecting seat (203); a grouting pipe (205) is movably installed inside the rotating drum (204); a push rod (206) is movably installed inside the grouting pipe (205); a piston (207) is fixedly installed outside the push rod (206); and a push plate (208) is fixedly installed outside the push rod (206); The disassembly structure (3) comprises a fixed plate (301), a limiting shaft (302), a movable plate (303), an inserting plate (304) and a limiting seat (305); the fixed plate (301) is fixedly mounted on the outside of the rotating drum (204); the limiting shaft (302) is fixedly mounted on the outside of the fixed plate (301); the movable plate (303) is movably mounted on the outside of the limiting shaft (302); the inserting plate (304) is hinged on the outside of the movable plate (303); and the limiting seat (305) is fixedly mounted on the outside of the grouting block (201).

2. The coal mine gas extraction sealing device according to claim 1, characterized in that: The right side of the grouting block (201) is provided with an insertion port, and the grouting pipe (205) passes through the connecting seat (203) and is plugged into the insertion port.

3. The coal mine gas extraction and sealing device according to claim 1, characterized in that: The grouting pipe (205) passes through the rotating drum (204) and is rotatably connected to the rotating drum (204), and the push rod (206) passes through the grouting pipe (205) and is movably connected to the grouting pipe (205).

4. The coal mine gas extraction sealing device according to claim 1, characterized in that: The piston (207) is located inside the grouting pipe (205), and the left side of the rotating cylinder (204) is rotatably connected to the inner left wall of the connecting seat (203).

5. The coal mine gas extraction and sealing device according to claim 1, characterized in that: The plug plate (304) passes through the connecting seat (203) and is movably connected to the connecting seat (203), and the plug plate (304) is plugged into the limiting seat (305).

6. The coal mine gas extraction and sealing device according to claim 1, characterized in that: There are two limit shafts (302), and the two limit shafts (302) are respectively located on the upper and lower sides of the rotating drum (204).

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