Complete device for preventing gas from spraying holes

Abstract

The utility model provides a complete device for preventing gas from spraying holes, which comprises a hollow pipe, one end of the hollow pipe is closed, a valve is mounted at the open end of the hollow pipe, an expansion air bag is sleeved on the hollow pipe, a hose is mounted on the outer surface of the expansion air bag, and an inflation nozzle is mounted at one end, far away from the expansion air bag, of the hose. Two limiting rings are arranged between the expansion air bag and the valve, the hollow pipe is sleeved with the limiting rings, the limiting rings are fixedly connected with the hollow pipe, two semicircular sleeves forming a cylindrical structure are arranged between the two limiting rings, the two ends of the two semicircular sleeves are connected through connecting pieces, battens are installed on the outer surfaces of the two semicircular sleeves, and the battens are connected with the hollow pipe through connecting pieces. The hole packer has the advantages that when the coal wall at the hole opening of the drill hole collapses, the hole packer is kept stable, the hole packer is prevented from being separated from the drill hole, and safety is improved.

Description

Technical Field

[0001] The utility model relates to a complete set of gas spray hole prevention devices, belonging to the field of gas extraction and drainage. Background Art

[0002] In order to prevent the sudden and large-scale emission of gas through the borehole in coal mines, it is necessary to install a sealer in the borehole. The sealer includes a hollow tube with multiple ventilation holes at one end and a valve installed at the other end of the hollow tube. An expansion air bag is provided on the hollow tube. After the hollow tube and the expansion air bag are installed in the borehole together, the volume of the expansion air bag increases, thereby restricting the sealer formed by the hollow tube, the expansion air bag, etc. in the borehole. Since the coal wall at the borehole mouth is relatively loose, the coal wall at the borehole mouth will collapse. The hollow tube is restricted in the borehole after the volume of the expansion air bag is expanded. Due to the collapse of the coal wall, the part of the hollow tube exposed outside the borehole will increase, which reduces the sealing stability of the sealer formed by the expansion air bag and the hollow tube, posing a safety hazard. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a complete set of gas blowout prevention devices to solve the problems raised in the above-mentioned background technology. When the coal wall at the borehole mouth collapses, the utility model can keep the sealer stable, prevent the sealer from detaching from the borehole, and improve safety.

[0004] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical solutions: a complete set of gas spray hole prevention devices, including a hollow tube, one end of the hollow tube is closed, a valve is installed at the open end of the hollow tube, and a plurality of ventilation holes are evenly opened on the outer surface of the end of the hollow tube away from the valve, an expansion air bag is sleeved on the hollow tube, a hose is installed on the outer surface of the expansion air bag, and an inflation nozzle is installed at the end of the hose away from the expansion air bag, two limiting rings are provided between the expansion air bag and the valve, the limiting ring is sleeved on the hollow tube and fixedly connected to the hollow tube, two semicircular sleeves forming a cylindrical structure are provided between the two limiting rings, the two ends of the two semicircular sleeves are connected by a connecting piece, and the outer surfaces of the two semicircular sleeves are both installed with slats, and the end of the slats away from the semicircular sleeves is provided with a first anchoring hole for inserting an anchor rod.

[0005] Furthermore, the connecting piece includes a first connecting ear, and both ends of one semicircular sleeve are equipped with a first connecting ear, and both ends of the other semicircular sleeve are equipped with a second connecting ear, and the first connecting ear is connected and fixed to the second connecting ear by a fastener formed by a screw and a nut.

[0006] Furthermore, a first connecting seat is connected and fixed to the side of the slat facing the valve, and a first U-shaped plate is provided on the side of the first connecting seat facing away from the hollow tube. The first U-shaped plate is sleeved on the slat and fixed to the slat, and an extension plate is inserted in the space formed by the first U-shaped plate and the slat, and one end of the extension plate is connected to the first connecting seat by a bolt, and a second anchoring hole for inserting the anchor rod is opened at the end of the extension plate away from the first connecting seat.

[0007] Furthermore, a second connecting seat is connected and fixed to the side of the extension plate facing the valve, and a second U-shaped plate is provided on the side of the second connecting seat facing away from the hollow tube. The second U-shaped plate is sleeved on the extension plate and connected and fixed to the extension plate, and another extension plate is inserted in the space formed by the second U-shaped plate and the extension plate, and one extension plate is connected to the second connecting seat on the other extension plate by bolts.

[0008] Furthermore, a twisted plate is connected and fixed to the outer surface of the semicircular sleeve, and one end of the twisted plate away from the semicircular sleeve is connected and fixed to the slat, and the twisted plate and the slat are an integrally formed structure.

[0009] Furthermore, both ends of the inflatable airbag are connected and fixed with connecting sleeves, the connecting sleeve and the inflatable airbag are an integrally formed structure, the connecting sleeve is provided on the hollow tube and the connecting sleeve is adhered to the hollow tube.

[0010] Beneficial effects of the utility model:

[0011] 1. Insert the structure formed by the hollow tube and the expansion airbag into the drill hole, then connect the inflation nozzle to the inflation device, and use the inflation device to inject air into the expansion airbag to increase the volume of the expansion airbag, so that the expansion airbag and the hollow tube are confined in the drill hole, thereby sealing the drill hole and preventing gas spraying.

[0012] 2. Use screws and nuts to install the two semicircular sleeves between the two limiting rings, so that the cylindrical structure formed by the two semicircular sleeves can rotate around the hollow pipe, making it easy to adjust the position of the first anchor hole on the coal wall as needed.

[0013] 3. Anchor rods are used to restrict the slats on the coal wall, and then the structure formed by the two slats and two semicircular sleeves and other components restricts the position of the hollow tube. When the coal wall at the borehole mouth collapses, the sealer formed by the hollow tube and the expansion airbag remains stable, preventing the sealer from detaching from the borehole and improving safety.

[0014] 4. Insert an extension plate between the first U-shaped plate and the slats, and connect the extension plate and the first connecting seat with bolts. Insert one extension plate between another extension plate and the second U-shaped plate above it, and connect one extension plate to the second connecting seat on the other extension plate with bolts, so as to adjust the distance between the second anchor hole and the drill hole according to the on-site conditions of the coal wall, so that the anchor rod is anchored in the coal wall after passing through the second anchor hole, thereby anchoring the anchor rod on the coal wall away from the drill hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Other features, objects and advantages of the present invention will become more apparent from the detailed description of the non-limiting embodiments with reference to the following drawings:

[0016] Figure 1 This is a structural diagram of a complete set of gas spray hole prevention devices of the utility model;

[0017] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0018] Figure 3 This is a schematic diagram of the assembly of an extension plate, a strip, a valve and a hollow tube in a complete set of gas spray hole prevention devices of the present invention;

[0019] In the figure: 1-hollow tube, 2-vent, 3-inflatable airbag, 4-connecting sleeve, 5-slat, 6-first anchoring hole, 7-first U-shaped plate, 8-first connecting seat, 9-valve, 10-inflating nozzle, 11-hose, 12-extension plate, 13-second connecting seat, 14-second U-shaped plate, 15-second anchoring hole, 16-limiting ring, 17-twisted plate, 18-semicircular sleeve, 19-nut, 20-first connecting ear, 21-second connecting ear, 22-bolt, 23-screw. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] See also Figure 1 and Figure 3The utility model provides a technical solution: a complete device for preventing gas spray holes, comprising a hollow tube 1, one end of the hollow tube 1 is closed, a valve 9 is installed at the open end of the hollow tube 1, and a plurality of vent holes 2 are evenly opened on the outer surface of the end of the hollow tube 1 away from the valve 9, an inflatable air bag 3 is sleeved on the hollow tube 1, and the two ends of the inflatable air bag 3 are connected and fixed with a connecting sleeve 4, and the connecting sleeve 4 and the inflatable air bag 3 are an integrally formed structure. The connecting sleeve 4 is sleeved on the hollow tube 1 and the connecting sleeve 4 is adhered to the hollow tube 1, and a hose 11 is installed on the outer surface of the inflatable air bag 3, and an inflation nozzle 10 is installed at the end of the hose 11 away from the inflatable air bag 3, so that the structure formed by the hollow tube 1 and the inflatable air bag 3 is inserted into the drilled hole, and then the inflation nozzle 10 is connected to the inflation device, and air is injected into the inflatable air bag 3 by using the inflation device to increase the volume of the inflatable air bag 3, so that the inflatable air bag 3 and the hollow tube 1 are restricted in the drilled hole, thereby achieving the blocking of the drilled hole and preventing gas spray holes.

[0022] See Figure 1-Figure 3 Two limiting rings 16 are provided between the expansion airbag 3 and the valve 9. The limiting rings 16 are sleeved on the hollow tube 1 and fixedly connected to the hollow tube 1. Two semicircular sleeves 18 forming a cylindrical structure are provided between the two limiting rings 16. Both ends of one semicircular sleeve 18 are installed with a first connecting ear 20, and both ends of the other semicircular sleeve 18 are installed with a second connecting ear 21. The first connecting ear 20 is connected and fixed to the second connecting ear 21 by a fastener formed by a screw 23 and a nut 19. The two semicircular sleeves 18 are installed between the two limiting rings 16 by using the screw 23 and the nut 19, so that the cylindrical structure formed by the two semicircular sleeves 18 can rotate around the hollow tube 1, so that the position of the first anchor hole 6 on the coal wall can be adjusted as needed.

[0023] See Figure 1-Figure 3 , the outer surfaces of the two semicircular sleeves 18 are connected and fixed with a twisting plate 17, and the end of the twisting plate 17 away from the semicircular sleeve 18 is connected and fixed to the slat 5, and the twisting plate 17 and the slat 5 are an integrally formed structure. The end of the slat 5 away from the semicircular sleeve 18 is provided with a first anchoring hole 6 for inserting the anchor rod. The design of the twisting plate 17 makes it convenient to make the central axis of the first anchoring hole 6 parallel to the hollow tube 1, and the anchor rod is used to limit the slat 5 on the coal wall, and then the structure formed by the two slats 5 and the two semicircular sleeves 18 and other components limits the position of the hollow tube 1, so that when the coal wall at the borehole mouth collapses, the sealer formed by the hollow tube 1 and the expansion airbag 3 remains stable, preventing the sealer from detaching from the borehole and improving safety.

[0024] See Figure 1-Figure 3, the side of the slat 5 facing the valve 9 is connected and fixed with a first connecting seat 8, and the side of the first connecting seat 8 facing away from the hollow tube 1 is provided with a first U-shaped plate 7, the first U-shaped plate 7 is sleeved on the slat 5 and connected and fixed to the slat 5, an extension plate 12 is inserted in the space formed by the first U-shaped plate 7 and the slat 5, one end of the extension plate 12 is connected to the first connecting seat 8 by a bolt 22, and a second anchor hole 15 for inserting the anchor rod is opened at the end of the extension plate 12 away from the first connecting seat 8, the side of the extension plate 12 facing the valve 9 is connected and fixed with a second connecting seat 13, and the side of the second connecting seat 13 facing away from the hollow tube 1 is provided with a second U-shaped plate 14, the second U-shaped plate 14 is sleeved on the extension plate 12 and connected and fixed to the extension plate 12, the second U-shaped plate 1 Another extended plate 12 is inserted into the space formed by the extended plate 12 and the extended plate 12. The one extended plate 12 is connected to the second connecting seat 13 on the other extended plate 12 by means of bolts 22, so that the one extended plate 12 is inserted between the first U-shaped plate 7 and the slat 5. The extended plate 12 and the first connecting seat 8 are connected by means of bolts 22, so that the one extended plate 12 is inserted between the other extended plate 12 and the second U-shaped plate 14 thereon. The one extended plate 12 is connected to the second connecting seat 13 on the other extended plate 12 by means of bolts 22, so that the distance between the second anchor hole 15 and the drill hole can be adjusted according to the on-site conditions of the coal wall, so that the anchor rod is anchored in the coal wall after passing through the second anchor hole 15, thereby anchoring the anchor rod on the coal wall away from the drill hole.

[0025] Although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A complete set of gas spray hole prevention devices, comprising a hollow tube (1), characterized in that: One end of the hollow tube (1) is closed, a valve (9) is installed at the open end of the hollow tube (1), a plurality of vent holes (2) are evenly opened on the outer surface of the end of the hollow tube (1) away from the valve (9), an expansion air bag (3) is sleeved on the hollow tube (1), a hose (11) is installed on the outer surface of the expansion air bag (3), an inflation nozzle (10) is installed at the end of the hose (11) away from the expansion air bag (3), and a space between the expansion air bag (3) and the valve (9) is provided. Two limiting rings (16) are provided, the limiting rings (16) are sleeved on the hollow tube (1) and are fixedly connected to the hollow tube (1), two semicircular sleeves (18) forming a cylindrical structure are provided between the two limiting rings (16), the two ends of the semicircular sleeves (18) are connected by a connecting piece, and the outer surfaces of the two semicircular sleeves (18) are both installed with a slat (5), and the end of the slat (5) away from the semicircular sleeve (18) is provided with a first anchoring hole (6) for inserting an anchor rod.

2. A complete set of gas spray hole prevention devices according to claim 1, characterized in that: The connecting member includes a first connecting ear (20), and the first connecting ear (20) is installed at both ends of one semicircular sleeve (18), and the second connecting ear (21) is installed at both ends of the other semicircular sleeve (18), and the first connecting ear (20) is connected and fixed to the second connecting ear (21) through a fastener formed by a screw (23) and a nut (19).

3. The gas spray hole prevention device according to claim 1, characterized in that: A first connecting seat (8) is connected and fixed to the side of the slat (5) facing the valve (9), and a first U-shaped plate (7) is provided on the side of the first connecting seat (8) facing away from the hollow tube (1). The first U-shaped plate (7) is sleeved on the slat (5) and connected and fixed to the slat (5). An extension plate (12) is inserted into the space formed by the first U-shaped plate (7) and the slat (5), and one end of the extension plate (12) is connected to the first connecting seat (8) by a bolt (22). A second anchoring hole (15) for inserting an anchor rod is opened at the end of the extension plate (12) away from the first connecting seat (8).

4. A complete set of gas spray hole prevention devices according to claim 3, characterized in that: A second connecting seat (13) is connected and fixed to the side of the extension plate (12) facing the valve (9), and a second U-shaped plate (14) is provided on the side of the second connecting seat (13) facing away from the hollow tube (1). The second U-shaped plate (14) is sleeved on the extension plate (12) and connected and fixed to the extension plate (12). Another extension plate (12) is inserted in the space formed by the second U-shaped plate (14) and the extension plate (12), and one extension plate (12) is connected to the second connecting seat (13) on the other extension plate (12) by a bolt (22).

5. The gas spray hole prevention device according to claim 1, characterized in that: A twisted plate (17) is connected and fixed to the outer surface of the semicircular sleeve (18); one end of the twisted plate (17) away from the semicircular sleeve (18) is connected and fixed to the slat (5); and the twisted plate (17) and the slat (5) are an integrally formed structure.

6. The gas spray hole prevention device according to claim 1, characterized in that: Both ends of the expansion airbag (3) are connected and fixed with a connecting sleeve (4), the connecting sleeve (4) and the expansion airbag (3) are an integrally formed structure, the connecting sleeve (4) is sleeved on the hollow tube (1), and the connecting sleeve (4) and the hollow tube (1) are adhered.

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