Mine gas extraction blowout preventer

Abstract

The utility model discloses a mine gas extraction blowout preventer which comprises a drilling machine body, a fixed disc is fixedly arranged on the outer wall of the drilling machine body, a plurality of electric push rods are arranged on the outer wall of the fixed disc and arranged in a circumferential shape, the output ends of the electric push rods penetrate through the fixed disc and are provided with movable frames, and the movable frames are arranged on the fixed disc. An air storage cylinder is fixedly arranged in the middle of the movable frame, a rubber pad is fixedly arranged on the outer wall of the air storage cylinder, the rubber pad is in a conical shape, one end of the rubber pad is fixedly connected with the outer wall of the fixed disc, a connecting cylinder is fixedly arranged on the inner wall of the fixed disc, and a mounting nut is rotationally arranged at one end of the connecting cylinder; the rubber pad is arranged to be in a conical shape, a user can control the electric push rod to move the rubber pad so as to adapt to mining holes of different sizes, and gas leakage is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of gas drainage, and more specifically, it relates to an anti-blowout device for mine gas drainage. Background Art

[0002] In coal mining, it is necessary to drain the gas inside. The anti-blowout measures during gas drainage are mainly to prevent and control the phenomenon of gas jet in the mine. Gas is a combustible gas. In a certain concentration range, it forms a combustible mixture with air. When encountering a fire source, it may trigger a gas explosion accident. Gas is a colorless and odorless gas. When the gas reaches a certain concentration, it can cause people to suffocate due to lack of oxygen and can burn or explode. Gas exists in the coal body or surrounding rock in a free state and an adsorbed state.

[0003] However, most of the existing sealing mechanisms of the anti-blowout devices for gas drainage are of a fixed size. Such a structure cannot adapt to holes of different sizes, resulting in gas leakage still occurring when the sealing mechanism plugs the holes, which is likely to trigger danger.

[0004] Moreover, most of the existing anti-blowout devices do not have the function of collecting gas, so external equipment is still needed during collection, which not only increases the time and effort of the mine during mining, but also makes the operation more troublesome. Summary of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] Aiming at the problems existing in the prior art, the utility model provides an anti-blowout device for mine gas drainage to solve the technical problem that most of the existing sealing mechanisms of the anti-blowout devices for gas drainage are of a fixed size, such a structure cannot adapt to holes of different sizes, resulting in gas leakage still occurring when the sealing mechanism plugs the holes as mentioned in the background art.

[0007] (2) Technical Solutions

[0008] To achieve the above object, the present utility model provides the following technical solution: a mine gas drainage anti-blowout device, including a drilling rig body, on the outer wall of the drilling rig body is fixedly provided with a fixed disk, on the outer wall of the fixed disk is provided with electric push rods, a plurality of electric push rods are arranged in a circular shape, the output ends of the electric push rods all pass through the fixed disk and are provided with a movable frame, at the middle position of the movable frame is fixedly provided with a gas storage cylinder, on the outer wall of the gas storage cylinder is fixedly provided with a rubber pad, the rubber pad is in a conical shape, and one end of it is fixedly connected to the outer wall of the fixed disk, on the inner wall of the fixed disk is fixedly provided with a connecting cylinder, at one end of the connecting cylinder is rotatably provided with a mounting nut, and the mounting nuts are all threadedly connected to the output ends of the electric push rods, at one end of the gas storage cylinder is communicated with a guide pipe, at the other end of the guide pipe is provided with a collection mechanism, and the collection mechanism includes a filter box.

[0009] The present utility model is further provided that on the inner walls of the filter box and on both sides are fixedly provided with mounting strips, there are two groups of mounting strips, and on their upper end faces are respectively provided with sliding grooves, in the sliding grooves are respectively slidably provided a coarse filter plate and a fine filter plate, and a pump body is provided on the guide pipe, which is convenient for filtering the collected gas.

[0010] The present utility model is further provided that on the outer wall of the filter box is fixedly provided a connecting pipe, at the other end of the connecting pipe is fixedly provided a gas tank, and a valve is provided on the connecting pipe, which is convenient for collecting the gas for subsequent use.

[0011] The present utility model is further provided that on the upper end face of the filter box is fixedly provided a mounting frame, on the upper end of the mounting frame is movably provided a cover plate, on the lower end face of the cover plate is fixedly provided a first conical surface, on the inner wall of the mounting frame is provided a second conical surface, the first conical surface is located inside the second conical surface and their inclination degrees are equal, which is convenient for increasing the sealing performance between the cover plate and the mounting frame.

[0012] The present utility model is further provided that on both side faces of the mounting frame and the cover plate are fixedly provided ear plates, on the ear plates are respectively provided threaded holes, and in the threaded holes are provided locking screws, which is convenient for fixedly installing the mounting frame and the cover plate.

[0013] The present utility model is further provided that a sealing gasket is provided between the mounting frame and the cover plate, which is convenient for further increasing the sealing performance between the mounting frame and the cover plate.

[0014] The present utility model is further provided that on the outer wall of the gas storage cylinder is provided an air suction head, a plurality of air suction heads are provided and are all communicated with the inside of the gas storage cylinder, which is convenient for absorbing the gas in the mining cavity.

[0015] The present utility model is further provided that the gas storage cylinder is slidably installed on the outer wall of the drilling rig body, which is convenient for moving the rubber pad.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides a mine gas drainage anti-blowout device, which has the following beneficial effects:

[0018] 1. By setting the rubber pad in a conical shape, the user can adjust the extension distance of the electric push rod to move the rubber pad until it abuts against the inner wall of the mining hole of different sizes, preventing gas leakage. Moreover, the electric push rod and the moving frame can be disassembled by rotating the mounting nut, which is convenient for replacing the rubber pad. Through this design, the anti-blowout device can adapt to holes of different sizes, making the anti-blowout effect better.

[0019] 2. By setting the gas storage cylinder, the air duct and the filter box, during the mining process, the user can turn on the pump body to make the gas enter the gas storage cylinder through the suction head and enter the filter box through the air duct. At this time, the gas will enter the gas tank after being filtered by the coarse filter plate and the fine filter plate, which is convenient for collecting it, saving time and effort.

[0020] 3. By setting the mounting frame and the cover plate, the user can tighten the locking screw to make the first conical surface enter the second conical surface, and make the sealing gasket abut against the outer surfaces of the cover plate and the mounting frame. At this time, the sealing performance between the cover plate and the mounting frame can be increased to prevent gas leakage. Through this design, it is convenient to disassemble the coarse filter plate and the fine filter plate inside the filter box for later cleaning. Description of the drawings

[0021] Figure 1 It is an overall schematic diagram of a mine gas drainage anti-blowout device in an unused state;

[0022] Figure 2 It is an installation schematic diagram of the gas storage cylinder, the rubber pad, the connecting cylinder, the mounting nut and the suction head on the moving frame;

[0023] Figure 3 It is an exploded view of the installation of the filter box, the cover plate, the locking screw and the sealing gasket;

[0024] Figure 4 It is a sectional view of the installation of the filter box, the cover plate and the sealing gasket;

[0025] Figure 5 It is an installation schematic diagram of the gas storage cylinder, the air duct, the filter box, the pump body and the gas tank on the moving frame.

[0026] In the figure: 1, drill rig body; 2, fixed disk; 3, electric push rod; 4, moving frame; 5, air storage cylinder; 6, rubber pad; 7, connecting cylinder; 8, mounting nut; 9, air duct; 10, filter box; 11, mounting strip; 12, chute; 13, coarse filter plate; 14, fine filter plate; 15, pump body; 16, connecting pipe; 17, gas tank; 18, valve; 19, mounting frame; 20, cover plate; 21, first conical surface; 22, second conical surface; 23, ear plate; 24, threaded hole; 25, locking screw; 26, gasket; 27, suction head. Detailed implementation mode

[0027] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The following will describe the present invention in detail with reference to the drawings and in combination with the embodiments.

[0028] It should be pointed out that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0029] In the present invention, without contrary description, the orientations such as "upper and lower" are usually in the directions shown in the drawings, or in the vertical, perpendicular or gravitational directions; similarly, for the convenience of understanding and description, "left and right" are usually in the left and right shown in the drawings; "inside and outside" refer to the inside and outside relative to the contour of each component itself, but the above orientation terms do not limit the present invention.

[0030] Please refer to Figures 1-5 , a mine gas drainage and blowout prevention device, including a drill rig body 1, a fixed disk 2 is fixedly arranged on the outer wall of the drill rig body 1, an electric push rod 3 is arranged on the outer wall of the fixed disk 2, a plurality of electric push rods 3 are arranged in a circular arrangement, the output ends of the electric push rods 3 all pass through the fixed disk 2 and are provided with a moving frame 4, an air storage cylinder 5 is fixedly arranged at the middle position of the moving frame 4, a rubber pad 6 is fixedly arranged on the outer wall of the air storage cylinder 5, the rubber pad 6 is in a conical shape, and one end of it is fixedly connected to the outer wall of the fixed disk 2, a connecting cylinder 7 is fixedly arranged on the inner wall of the fixed disk 2, mounting nuts 8 are rotatably arranged at one ends of the connecting cylinders 7, the mounting nuts 8 are all threadedly connected to the output ends of the electric push rods 3, one end of the air storage cylinder 5 is communicated with an air duct 9, and a collecting mechanism is arranged at the other end of the air duct 9, and the collecting mechanism includes a filter box 10.

[0031] In this embodiment, mounting strips 11 are fixedly provided on the inner walls of the filter box 10 and on both sides. There are two groups of mounting strips 11, and sliding grooves 12 are formed on their upper end faces. A coarse filter plate 13 and a fine filter plate 14 are respectively slidably arranged inside the sliding grooves 12. A pump body 15 is provided on the air guide pipe 9. A connecting pipe 16 is fixedly provided on the outer wall of the filter box 10. The other end of the connecting pipe 16 is fixedly provided with an air tank 17. A valve 18 is provided on the connecting pipe 16.

[0032] More specifically, the user can adjust the extended distance of the electric push rod 3 to move the rubber pad 6 until the rubber pad 6 abuts against the inner wall of the mining hole of different sizes, preventing the leakage of gas. And the electric push rod 3 and the moving frame 4 can also be disassembled by rotating the mounting nut 8, which is convenient for replacing the rubber pad 6. During the mining process, the user can turn on the pump body 15 to allow the gas to enter the storage cylinder 5 through the suction head 27 and enter the filter box 10 through the air guide pipe 9. At this time, the gas will enter the air tank 17 after being filtered by the coarse filter plate 13 and the fine filter plate 14, which is convenient for collecting it.

[0033] Please refer to Figure 1 、 Figure 3 and Figure 4 As an implementation method for sealing and installing the cover plate 20: An installation frame 19 is fixedly provided on the upper end face of the filter box 10. A cover plate 20 is movably arranged on the upper end of the installation frame 19. A first conical surface 21 is fixedly provided on the lower end face of the cover plate 20. A second conical surface 22 is formed on the inner wall of the installation frame 19. The first conical surface 21 is located inside the second conical surface 22 and their inclination degrees are equal. Ear plates 23 are fixedly provided on both side faces of the installation frame 19 and the cover plate 20. Threaded holes 24 are formed in the ear plates 23. Locking screws 25 are arranged inside the threaded holes 24. A sealing gasket 26 is arranged between the installation frame 19 and the cover plate 20.

[0034] Specifically, the user can tighten the locking screw 25 to make the first conical surface 21 enter the second conical surface 22 and make the sealing gasket 26 abut against the outer surfaces of the cover plate 20 and the installation frame 19. At this time, the sealing performance between the cover plate 20 and the installation frame 19 can be increased to prevent gas leakage. The locking screw 25 can also be disassembled to take out the coarse filter plate 13 and the fine filter plate 14 inside the filter box 10 from the inside of the sliding groove 12, which is convenient for later cleaning.

[0035] Please refer to Figure 2 As a further implementation method for absorbing and collecting the gas: A suction head 27 is provided on the outer wall of the storage cylinder 5. There are multiple suction heads 27 and they are all communicated with the inside of the storage cylinder 5. The storage cylinder 5 is slidably installed on the outer wall of the drilling rig body 1.

[0036] Specifically, the gas in the mining hole can be sucked out through the suction head 27 to facilitate subsequent collection.

[0037] In summary, when the overall equipment is in use: during mining, the user can adjust the extension distance of the electric push rod 3 to move the rubber pad 6 on the moving frame 4 until the rubber pad 6 abuts against the inner wall of the mining hole, thereby increasing the sealing performance of the connection position and preventing gas leakage. Moreover, the electric push rod 3 and the moving frame 4 can be disassembled by rotating the mounting nut 8 to facilitate the replacement of the rubber pad 6. When gas collection is required, the user can turn on the pump body 15 to allow the gas to enter the storage cylinder 5 through the suction head 27 and enter the filter box 10 through the air guide pipe 9. At this time, the gas will enter the gas tank 17 after being filtered by the coarse filter plate 13 and the fine filter plate 14, facilitating its collection. After completion, the locking screw 25 can be disassembled to take out the coarse filter plate 13 and the fine filter plate 14 inside the filter box 10 from the inside of the sliding groove 12 for convenient later cleaning.

[0038] During mining, the user can adjust the extension distance of the electric push rod 3 to move the rubber pad 6 on the moving frame 4 until the rubber pad 6 abuts against the inner wall of the mining hole, thereby increasing the sealing performance of the connection position and preventing gas leakage.

[0039] When gas collection is required, the pump body 15 can be turned on to allow the gas to enter the storage cylinder 5 through the suction head 27 and enter the filter box 10 through the air guide pipe 9. At this time, the gas will enter the gas tank 17 after being filtered by the coarse filter plate 13 and the fine filter plate 14, facilitating its collection.

[0040] After completion, the locking screw 25 can be disassembled to take out the coarse filter plate 13 and the fine filter plate 14 inside the filter box 10 from the inside of the sliding groove 12 for convenient later cleaning.

[0041] In all the solutions mentioned above, for the connection between two components, welding, the cooperation of bolts and nuts, bolt or screw connection, or other well-known connection methods can be selected according to the actual situation, which will not be elaborated here one by one. For those mentioned above that involve fixed connection, welding is preferably considered. 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 mine gas extraction blowout prevention device, comprising a drilling rig body (1), characterized in that: A fixed plate (2) is fixedly provided on the outer wall of the drilling rig body (1), an electric push rod (3) is provided on the outer wall of the fixed plate (2), a plurality of the electric push rods (3) are provided and arranged in a circular shape, the output ends of the electric push rods (3) all pass through the fixed plate (2) and are provided with a moving frame (4), an air storage cylinder (5) is fixedly provided at the middle position of the moving frame (4), a rubber pad (6) is fixedly provided on the outer wall of the air storage cylinder (5), the rubber pad (6) is in a conical shape, and one end of the rubber pad is fixedly connected to the outer wall of the fixed plate (2), a connecting cylinder (7) is fixedly provided on the inner wall of the fixed plate (2), one end of the connecting cylinder (7) is rotatably provided with a mounting nut (8), and the mounting nut (8) is threadedly connected to the output end of the electric push rod (3), one end of the air storage cylinder (5) is connected with an air guide pipe (9), and the other end of the air guide pipe (9) is provided with a collecting mechanism, and the collecting mechanism includes a filter box (10).

2. A mine gas extraction blowout prevention device according to claim 1, characterized in that: Mounting strips (11) are fixedly provided on the inner wall of the filter box (10) and on both sides. Two groups of mounting strips (11) are provided, and a slide groove (12) is provided on the upper end surface thereof. A coarse filter plate (13) and a fine filter plate (14) are slidably provided inside the slide groove (12), and a pump body (15) is provided on the air guide pipe (9).

3. A mine gas extraction blowout prevention device according to claim 2, characterized in that: A connecting pipe (16) is fixedly provided on the outer wall of the filter box (10), a gas tank (17) is fixedly provided on the other end of the connecting pipe (16), and a valve (18) is provided on the connecting pipe (16).

4. The mine gas extraction blowout prevention device according to claim 1 is characterized by: A mounting frame (19) is fixedly provided on the upper end surface of the filter box (10), a cover plate (20) is movably provided on the upper end of the mounting frame (19), a first conical surface (21) is fixedly provided on the lower end surface of the cover plate (20), a second conical surface (22) is provided on the inner wall of the mounting frame (19), the first conical surface (21) is located inside the second conical surface (22), and the inclinations of the first conical surface (21) and the second conical surface (22) are equal.

5. A mine gas extraction blowout prevention device according to claim 4, characterized in that: Ear plates (23) are fixedly provided on both sides of the installation frame (19) and the cover plate (20), threaded holes (24) are provided on the ear plates (23), and locking screws (25) are provided inside the threaded holes (24).

6. A mine gas extraction blowout prevention device according to claim 4, characterized in that: A sealing gasket (26) is provided between the installation frame (19) and the cover plate (20).

7. The mine gas extraction blowout prevention device according to claim 2 is characterized by: An air suction head (27) is provided on the outer wall of the air storage cylinder (5), and a plurality of air suction heads (27) are provided and are all in communication with the interior of the air storage cylinder (5).

8. The mine gas extraction blowout prevention device according to claim 1 is characterized by: The gas storage cylinder (5) is slidably mounted on the outer wall of the drilling rig body (1).

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