Gas extraction hole sealing device

Abstract

The utility model discloses a gas extraction hole sealing device belongs to coal mining technical field, including the suction pipe, two sachets are fixedly connected on the suction pipe, and the grouting pipe is communicated between two sachets, and the blast valve is fixedly connected on the grouting pipe, and the end of grouting pipe is connected with grouting mechanism, and grouting mechanism includes mixing bowl, and the stirring mechanism is arranged in mixing bowl, and the stirring mechanism includes rotating shaft, and the auxiliary mechanism is arranged on rotating shaft, and the auxiliary mechanism includes the drive box of fixed connection on rotating shaft, and the wall of drive box is rotatably connected with the installation shaft of multiple groups of symmetrical settings, and the installation shaft is installed at liquid level, and the pointed cone of multiple groups of circumferential settings is fixedly connected on the installation shaft, and the auxiliary mechanism still includes power assembly. Advantageous effects lie in: through power assembly drive installation shaft in revolution simultaneously drive pointed cone and rotate, through pointed cone to the material of liquid level floating constantly agitates, carries out the crushing to it, and the material is pushed down, and it is convenient for material quick and water fusion.

Description

Technical Field

[0001] This utility model relates to the field of coal mining technology, and in particular to a gas extraction and sealing device. Background Technology

[0002] Methane gas is a colorless and odorless gas, mainly composed of methane, and sometimes containing small amounts of carbon dioxide, nitrogen, and other gases. In coal mining, methane gas is a significant safety hazard. Methane drainage is an important safety measure in coal mines, used to reduce the methane content in the mine and improve mine safety. During methane drainage, it is usually necessary to extract the methane from the coal seam through boreholes. To ensure effective methane drainage, borehole sealing is a crucial step.

[0003] Existing technologies typically employ push-type, blade-type, and injection-type hole sealers to seal holes of different diameters. The two-plug-one-injection hole sealer is a commonly used device for sealing boreholes in coal mine gas drainage. It achieves efficient hole sealing through a double-sealing structure (two plugs) and intermediate grouting (one injection), ensuring gas drainage effectiveness and safety. Two expansion capsules or rubber bladders (located at both ends of the borehole) expand mechanically or hydraulically to fit tightly against the borehole wall, forming a preliminary seal. Then, cement slurry, polyurethane, or other materials are injected into the grouting pipe between the two capsules using a grouting pump. After curing, these materials enhance the sealing performance and pressure resistance.

[0004] The cement slurry being injected usually requires a specific ratio. To ensure the accuracy of the ratio, an appropriate amount of water is usually added first and then the slurry is injected. However, if too much slurry is poured in at once, it may clump together and float on the surface of the water, affecting the mixing efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a gas extraction sealing device to solve the above-mentioned problems.

[0006] This utility model achieves the above objectives through the following technical solutions:

[0007] A gas extraction and sealing device includes a suction pipe with two bags fixedly connected to it, the bags covering the outer periphery of the suction pipe. A grouting pipe connects the two bags and a rupture valve is fixedly connected to the grouting pipe. A return water pipe also connects the two bags. One end of the grouting pipe extends out of one of the bags and is connected to a grouting mechanism. The grouting mechanism includes a mixing cylinder with a stirring mechanism inside. The stirring mechanism includes a rotating shaft with an auxiliary mechanism on it. The auxiliary mechanism includes a drive box fixedly connected to the rotating shaft. Multiple symmetrically arranged mounting shafts are rotatably connected inside the drive box. The mounting shafts are installed on the liquid surface and multiple circumferentially arranged pointed cones are fixedly connected to them. The auxiliary mechanism also includes a power component for driving the mounting shafts to rotate the pointed cones.

[0008] Preferably, the grouting mechanism further includes a feeding hopper, which is fixedly connected to the top of the mixing cylinder, and a rotating shaft is rotatably connected to the wall of the feeding hopper. A feeding port is provided on one side of the top of the feeding hopper, and a grouting pump is fixedly connected to the top of the feeding hopper. A conveying pipe is fixedly connected to the outlet of the grouting pump. The conveying pipe is a flexible hose, and the other end of the conveying pipe is detachably connected to the grouting pipe.

[0009] Preferably, the stirring mechanism further includes a stirring blade, which is fixedly connected to the outer wall of the rotating shaft. A mounting frame is fixedly connected to the top of the feeding hopper, and a driving component is provided on the mounting frame to drive the rotating shaft to rotate.

[0010] Preferably, the drive assembly includes a stirring motor fixedly connected to the mounting bracket, a drive gear fixedly connected to the output shaft of the stirring motor, and a gear ring fixedly connected to the outer wall of the rotating shaft, with the drive gear meshing with the gear ring.

[0011] Preferably, the top of the rotating shaft has a mounting cavity that communicates with the drive housing.

[0012] Preferably, the power assembly includes a vertical shaft fixedly connected to the mounting bracket. The vertical shaft passes through the mounting cavity and extends into the drive housing. A driving bevel gear is fixedly connected to the bottom end of the vertical shaft. A driven bevel gear is fixedly connected to the end of the mounting shaft and meshes with the driving bevel gear.

[0013] Preferably, the mounting bracket is an inverted U-shape.

[0014] The beneficial effects are as follows: the power component drives the mounting shaft to rotate around the central axis while simultaneously causing the cone to rotate on its own axis. The cone continuously agitates and breaks up the material floating on the liquid surface and pushes the material downwards, making it easier for the material to quickly mix with the water.

[0015] The additional technical features and advantages of this utility model will become more apparent from the following description, or may be learned through specific practice of this utility model. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the gas extraction sealing device described in this utility model;

[0018] Figure 2 This is a front view of the internal structure of the mixing cylinder of the gas extraction sealing device of this utility model;

[0019] Figure 3The gas extraction sealing device described in this utility model Figure 2 Enlarged view of point A;

[0020] Figure 4 The gas extraction sealing device described in this utility model Figure 2 Enlarged view of point B;

[0021] Figure 5 This is a side view of the gas extraction sealing device described in this utility model.

[0022] The reference numerals in the attached drawings are explained as follows: 100, suction pipe; 101, bladder; 102, grouting pipe; 103, burst valve; 104, return water pipe; 200, mixing cylinder; 201, feeding hopper; 202, grouting pump; 203, conveying pipe; 301, rotating shaft; 302, mixing blade; 303, mounting bracket; 304, mixing motor; 305, driving gear; 306, gear ring; 401, drive box; 402, mounting shaft; 403, pointed cone; 404, vertical shaft; 405, driving bevel gear; 406, driven bevel gear. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, all electrical components mentioned in this document are electrically connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that provides control.

[0025] The present invention will be further described below with reference to the accompanying drawings:

[0026] like Figures 1-5 As shown, the gas extraction sealing device includes a suction pipe 100, two bags 101 are fixedly connected to the suction pipe 100 by wire or the like, the bags 101 cover the outer periphery of the suction pipe 100, a grouting pipe 102 is connected between the two bags 101, a rupture valve 103 is fixedly connected to the grouting pipe 102, and a return water pipe 104 is also connected between the two bags 101.

[0027] The end of the grouting pipe 102 extends out of one of the bladders 101 and is connected to a grouting mechanism. The grouting mechanism includes a mixing cylinder 200 and a feeding hopper 201. The feeding hopper 201 is fixedly connected to the top of the mixing cylinder 200. A feeding port is opened on one side of the top of the feeding hopper 201. The feeding port is inclined. A grouting pump 202 is bolted to the top of the feeding hopper 201. A pressure gauge is installed on the grouting pump 202. A conveying pipe 203 is fixedly connected to the outlet of the grouting pump 202. The conveying pipe 203 is a flexible hose. The length of the conveying pipe 203 is customized as needed. The other end of the conveying pipe 203 is detachably connected to the grouting pipe 102.

[0028] A mixing mechanism is provided inside the mixing cylinder 200. The mixing mechanism includes a rotating shaft 301, which is rotatably connected to the wall of the feeding hopper 201. The mixing mechanism also includes a mixing blade 302, which is fixedly connected to the outer wall of the rotating shaft 301. A mounting bracket 303 is fixedly connected to the top of the feeding hopper 201. The mounting bracket 303 is an inverted U-shape and a driving assembly is provided on the mounting bracket 303. The driving assembly is used to drive the rotating shaft 301 to rotate and includes components bolted to the mounting bracket 303. A stirring motor 304 has a drive gear 305 fixedly connected to its output shaft. A gear ring 306 is fixedly connected to the outer wall of the rotating shaft 301. The drive gear 305 meshes with the gear ring 306. When the stirring motor 304 is started, it drives the drive gear 305 to rotate. The drive gear 305 meshes with the gear ring 306, thereby driving the gear ring 306 to drive the rotating shaft 301 to rotate. The rotating shaft 301 drives the stirring blades 302 to rotate, thus stirring and mixing the materials and water in the mixing cylinder 200.

[0029] An auxiliary mechanism is provided on the rotating shaft 301. The auxiliary mechanism includes a drive box 401 fixedly connected to the rotating shaft 301. Multiple sets of symmetrically arranged mounting shafts 402 are rotatably connected inside the wall of the drive box 401. Multiple sets of circumferentially arranged pointed cones 403 are fixedly connected to the mounting shafts 402. The mounting shafts 402 are installed on the liquid surface according to the proportion of the ingredients, so that the mounting shafts 402 drive the pointed cones 403 to continuously move on the liquid surface, which facilitates breaking up the materials floating on the liquid surface and moving them below the liquid surface. The top of the rotating shaft 301 has an installation cavity that communicates with the drive box 401.

[0030] The auxiliary mechanism also includes a power assembly, which drives the mounting shaft 402 to rotate the cone 403. The power assembly includes a vertical shaft 404 fixedly connected to the mounting bracket 303. The vertical shaft 404 passes through the mounting cavity and extends into the drive box 401. The bottom end of the vertical shaft 404 is fixedly connected to a driving bevel gear 405. The end of the mounting shaft 402 extends into the drive box 401 and is fixedly connected to a driven bevel gear 406. The driven bevel gear 406 meshes with the driving bevel gear 405. The driving bevel gear 405 is fixed. During the process of the drive box 401 driving the mounting shaft 402 to rotate the cone 403, the driven bevel gear 406 on the mounting shaft 402 is driven by the meshing of the driving bevel gear 405 and begins to rotate.

[0031] Working principle: In use, first connect the conveying pipe 203 to the grouting pipe 102, and insert the suction pipe 100 carrying the bag 101 and the grouting pipe 102 into the borehole. Then, start the material preparation. First, add a certain amount of water to the mixing cylinder 200, and then add the material to the mixing cylinder 200 through the feeding hopper 201. Start the stirring motor 304, which drives the drive gear 305 to rotate. The drive gear 305 meshes with the gear ring 306, thereby driving the gear ring 306 to drive the rotating shaft 301 to rotate. The rotating shaft 301 drives the stirring blades 302 to rotate, mixing the material and water in the mixing cylinder 200. While the rotating shaft 301 is rotating, it also drives the drive box 401 to drive the mounting shaft 402 to rotate. While the mounting shaft 402 is rotating, it drives the driven bevel gear 406 to rotate. During the rotation of the driven bevel gear 406, it is subjected to the influence of the drive bevel gear 405. The drive will cause the mounting shaft 402 to rotate, and the mounting shaft 402 will drive the cone 403 to rotate. The cone 403 will continuously stir the material floating on the liquid surface, crush it, and push the material downward to facilitate the rapid mixing of the material with water. After mixing, the grouting pump 202 will be started to transport the slurry mixed in the mixing cylinder 200 to the grouting pipe 102 through the conveying pipe 203. The slurry will first fill the two bags 101, making the bags 101 bulge and fit against the hole wall. After the bags 101 are full, the pressure will cause the burst valve 103 to burst, and the slurry will further fill the sealing section between the two bags 101 and the cracks around the borehole. During the crack filling process, water will flow out of the return water pipe 104 and the water will gradually become clear. When the pressure of the grouting pump 202 reaches a certain level and the water flow in the return water pipe 104 decreases, and the grouting pump 202 experiences a certain amount of pump stalling, the sealing is completed.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A gas extraction and sealing device, comprising a suction pipe (100), two bags (101) fixedly connected to the suction pipe (100), the bags (101) covering the outer periphery of the suction pipe (100), a grouting pipe (102) connecting the two bags (101), a rupture valve (103) fixedly connected to the grouting pipe (102), a return water pipe (104) connecting the two bags (101), one end of the grouting pipe (102) extending out of one of the bags (101) and connected to a grouting mechanism, the grouting mechanism comprising a mixing cylinder (200), a stirring mechanism provided inside the mixing cylinder (200), the stirring mechanism comprising a rotating shaft (301), characterized in that: An auxiliary mechanism is provided on the rotating shaft (301). The auxiliary mechanism includes a drive box (401) fixedly connected to the rotating shaft (301). Multiple sets of symmetrically arranged mounting shafts (402) are rotatably connected inside the wall of the drive box (401). The mounting shafts (402) are installed on the liquid surface. Multiple sets of circumferentially arranged pointed cones (403) are fixedly connected to the mounting shafts (402). The auxiliary mechanism also includes a power component, which is used to drive the mounting shafts (402) to rotate the pointed cones (403).

2. The gas extraction sealing device according to claim 1, characterized in that: The grouting mechanism also includes a feeding hopper (201), which is fixedly connected to the top of the mixing cylinder (200). The rotating shaft (301) is rotatably connected to the wall of the feeding hopper (201). A feeding port is provided on one side of the top of the feeding hopper (201). A grouting pump (202) is fixedly connected to the top of the feeding hopper (201). A conveying pipe (203) is fixedly connected to the outlet of the grouting pump (202). The conveying pipe (203) is a flexible hose. The other end of the conveying pipe (203) is detachably connected to the grouting pipe (102).

3. The gas extraction borehole sealing device according to claim 2, characterized in that: The stirring mechanism also includes a stirring blade (302), which is fixedly connected to the outer wall of the rotating shaft (301). A mounting bracket (303) is fixedly connected to the top of the feeding hopper (201), and a driving component is provided on the mounting bracket (303). The driving component is used to drive the rotating shaft (301) to rotate.

4. The gas extraction borehole sealing device according to claim 3, characterized in that: The drive assembly includes a stirring motor (304) fixedly connected to the mounting bracket (303), a drive gear (305) fixedly connected to the output shaft of the stirring motor (304), and a gear ring (306) fixedly connected to the outer wall of the rotating shaft (301), the drive gear (305) meshing with the gear ring (306).

5. The gas extraction borehole sealing device according to claim 3, characterized in that: The top of the rotating shaft (301) has a mounting cavity that communicates with the drive box (401).

6. The gas extraction borehole sealing device according to claim 5, characterized in that: The power assembly includes a vertical shaft (404) fixedly connected to the mounting bracket (303). The vertical shaft (404) passes through the mounting cavity and extends into the drive box (401). The bottom end of the vertical shaft (404) is fixedly connected to a driving bevel gear (405). The end of the mounting shaft (402) extends into the drive box (401) and is fixedly connected to a driven bevel gear (406). The driven bevel gear (406) meshes with the driving bevel gear (405).

7. The gas extraction borehole sealing device according to claim 3, characterized in that: The mounting bracket (303) is an inverted U-shape.

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