CN212406795U - Shaft bottom pressure reducing device for mine - Google Patents

Abstract

The utility model discloses a shaft bottom pressure relief device for mine, including adjustable ring and drill barrel, sliding connection has the outlet duct on the adjustable ring, be equipped with a plurality of shifting chutes on the lateral wall of drill barrel, and a plurality of shifting chute intercommunication, every equal sliding connection has the closing plate in the shifting chute, be equipped with a plurality of spouts on the inner wall of adjustable ring, and equal sliding connection has the slider in every spout, and is a plurality of the cross pole is installed in the cooperation between the slider, equal swing joint has the connecting rod, every between cross pole and every closing plate all install torsion spring between connecting rod and the closing plate that corresponds, be equipped with the regulation structure on the adjustable ring, the downside inner wall of drill barrel is equipped with the ring channel. Has the advantages that: the utility model discloses when carrying out gas drainage, can seal the clearance of boring a section of thick bamboo lateral wall and drilling aperture, and then can avoid taking out the in-process at gas drainage, the waste or the environmental pollution scheduling problem that leads to are leaked from the gap to partial gas.

Description

Shaft bottom pressure reducing device for mine

Technical Field

The utility model relates to a mine shaft bottom decompression technical field especially relates to a shaft bottom pressure relief device for mine.

Background

With the improvement of supply in the coal industry, the country gradually advances productivity and inventory removal work in the coal industry, a large number of coal mines are forced to be closed, the underground residual coal and gas content gradually increases as the number of abandoned mines increases, and if the resources are not utilized, the resources are wasted, and a large potential safety hazard exists, so that gas extraction operation is needed.

When the existing gas extraction device is used, a drilling extraction mode is mostly adopted, and in the process, when gaps around an extraction pipeline are large, part of gas can leak from the extraction pipeline, so that the problems of environmental pollution, resource waste and the like are caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problems in the prior art and providing a shaft bottom pressure reducing device for a mine.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a shaft bottom pressure reducing device for a mine comprises an adjusting ring and a drill barrel, wherein an air outlet pipe is connected to the adjusting ring in a sliding mode, a plurality of moving grooves are formed in the side wall of the drill barrel and are communicated with each other in part, a sealing plate is connected to each moving groove in a sliding mode, a plurality of sliding grooves are formed in the inner wall of the adjusting ring, a sliding block is connected to each sliding groove in a sliding mode, a cross rod is installed between the plurality of sliding blocks in a matched mode, a connecting rod is connected between each cross rod and each sealing plate in a swinging mode, a torsion spring is installed between each connecting rod and the corresponding sealing plate, an adjusting structure is arranged on the adjusting ring, an annular groove is formed in the inner wall of the lower side of the drill barrel, a sealing ring is connected to the annular groove in a rotating mode, a plurality of air inlet grooves are formed in, and a switch structure is arranged between the sealing ring and the cross rod.

In foretell well bottom pressure reduction device for mine, adjust the structure and constitute by annular flexible groove, go-between, diaphragm, roof and a plurality of pressure spring, annular flexible groove is established on the lower lateral wall of adjustable ring, go-between fixed mounting is on boring a section of thick bamboo, and the upper end sliding connection of go-between is at annular flexible inslot, and is a plurality of the pressure spring is all installed between annular flexible groove and go-between, diaphragm fixed mounting is in the adjustable ring, roof fixed mounting is at the diaphragm lower extreme.

In the shaft bottom pressure reducing device for the mine, the switch structure comprises a spiral casing, a spiral rod and a plurality of fixing rods, the spiral rod is fixedly installed at the lower end of the cross rod, the spiral casing is fixedly installed on the sealing ring through the fixing rods, and the spiral casing is in threaded connection with the spiral rod.

In the shaft bottom pressure reducing device for the mine, the side wall of the sealing plate is fixedly provided with a plurality of limiting blocks, and the side wall of the moving groove is provided with a plurality of limiting grooves matched with the corresponding limiting blocks.

In the shaft bottom pressure reducing device for the mine, the surfaces of the adjusting ring, the drill cylinder and the cross rod are coated with antistatic coating.

Compared with the prior art, the utility model discloses the advantage lies in:

1: through the cooperation of adjusting structure and cross bar, can adjust the interval of a plurality of closing plates relative drill barrel lateral wall simultaneously, and then accessible it cooperates mutually, seals up the clearance in drill barrel lateral wall and drilling aperture, avoids taking out waste or environmental pollution scheduling problem that the in-process part gas leaked and leads to from the gap in gas drainage, and this regulative mode is comparatively simple and convenient.

2: through the cooperation of the switch structure and the sealing ring, the positions of the air inlet hole and the air inlet groove are gradually and mutually corresponding in the process of sealing the gap between the side wall of the drill cylinder and the aperture of the drilled hole, so that the smooth gas extraction operation at the lower end of the drill cylinder can be realized, the operation is not required to be separately performed, and the convenience of the device is further improved.

3: the device does not use electric energy for sealing the aperture and opening and closing the drill cylinder, so that the problem of gas explosion caused by electric sparks in the extraction process can be effectively avoided, and the operation safety is improved.

To sum up, the utility model discloses when carrying out gas drainage, can seal the clearance in a bore section of thick bamboo lateral wall and drilling aperture, and then can avoid taking out the in-process at gas drainage, the waste or the environmental pollution scheduling problem that leads to are leaked from the gap to part gas.

Drawings

Fig. 1 is a schematic structural view of a shaft bottom pressure reducing device for a mine, which is provided by the utility model;

FIG. 2 is a top view of the drill bit of FIG. 1;

FIG. 3 is a top view of the adjustment ring of FIG. 1;

fig. 4 is an enlarged view of a portion a of fig. 1.

In the figure: 1 adjusting ring, 2 drill cylinders, 3 air outlet pipes, 4 annular telescopic grooves, 5 connecting rings, 6 pressure springs, 7 moving grooves, 8 sealing plates, 9 cross rods, 10 sliding grooves, 11 connecting rods, 12 torsion springs, 13 limiting grooves, 14 transverse plates, 15 top plates, 16 air inlet grooves, 17 sealing rings, 18 air inlet holes, 19 fixing rods, 20 spiral sleeves and 21 spiral rods.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the shaft bottom pressure reducing device for the mine comprises an adjusting ring 1 and a drill barrel 2, wherein an air outlet pipe 3 is connected to the adjusting ring 1 in a sliding manner, a plurality of moving grooves 7 are formed in the side wall of the drill barrel 2, the moving grooves 7 are partially communicated with each other, and a sealing plate 8 is connected to each moving groove 7 in a sliding manner;

the above is noteworthy:

1. the quantity of closing plate 8 is four, and contact each other between every closing plate 8, the equal more than or equal to fourth of bore section of thick bamboo 2 arc length of every closing plate 8, when a plurality of closing plates 8 all shifted out from shifting chute 7, can make the ring that it constitutes airtight to the aperture that the bore section of thick bamboo 2 bored, thereby can avoid extracting the waste or environmental pollution scheduling problem that the in-process part gas leaked and leads to from bore section of thick bamboo 2 and aperture gap to gas, bore section of thick bamboo 2 is the pipeline that has now been used for extracting gas, its theory of operation and concrete structure do not specifically expounded here.

2. A plurality of limiting blocks are fixedly mounted on the side wall of the sealing plate 8, a plurality of limiting grooves 13 matched with the corresponding limiting blocks are formed in the side wall of the moving groove 7, and the stability of connection between the sealing plate 8 and the moving groove 7 can be guaranteed.

3. Be equipped with a plurality of spouts 10 on the inner wall of adjustable ring 1, and equal sliding connection has the slider in every spout 10, cross bar 9 is installed in the cooperation between a plurality of sliders, it is connected with connecting rod 11 all to swing between cross bar 9 and every closing plate 8, cooperation through cross bar 9 and a plurality of connecting rod 11, can adjust the position of a plurality of closing plates 8 in shifting chute 7 simultaneously, thereby can shield its clearance with the drilling aperture, or make its and aperture inner wall separation, be convenient for bore a section of thick bamboo 2 and continue to remove.

4. A torsion spring 12 is installed between each connecting rod 11 and the corresponding sealing plate 8, an adjusting structure is arranged on the adjusting ring 1, and the elastic force of the torsion spring 12 can keep the sealing plate 8 in an initial state, as shown in fig. 1.

5. The adjusting structure consists of an annular telescopic groove 4, a connecting ring 5, a transverse plate 14, a top plate 15 and a plurality of pressure springs 6, wherein the annular telescopic groove 4 is arranged on the lower side wall of the adjusting ring 1, the connecting ring 5 is fixedly arranged on the drill barrel 2, the upper end of the connecting ring 5 is connected in the annular telescopic groove 4 in a sliding manner, the plurality of pressure springs 6 are all arranged between the annular telescopic groove 4 and the connecting ring 5, the transverse plate 14 is fixedly arranged in the adjusting ring 1, the top plate 15 is fixedly arranged at the lower end of the transverse plate 14, when pressure is applied to the adjusting ring 1 to overcome the downward movement of the pressure springs 6, the top plate 15 is driven to move downwards simultaneously to apply pressure to the cross rod 9 so as to move downwards, a plurality of sealing plates 8 can be moved out of the moving grooves 7 through a plurality of connecting rods 11 simultaneously, the sealing between the drill barrel 2 and the aperture is realized, the matching of the connecting ring 5 and the annular telescopic groove, the problem of gas leakage caused by poor sealing performance in the gas extraction process is avoided.

6. The surfaces of the adjusting ring 1, the drill cylinder 2 and the cross rod 9 are coated with antistatic coating (acrylic acid can be adopted as the antistatic coating), and the use of the antistatic coating can avoid the problem of gas explosion caused by static generated when the device runs in the gas extraction process.

An annular groove is formed in the inner wall of the lower side of the drill cylinder 2, a sealing ring 17 is rotatably connected in the annular groove, a plurality of air inlet grooves 16 are formed in the side wall of the drill cylinder 2, each air inlet groove 16 is communicated with the annular groove, and a plurality of air inlet holes 18 are formed in the sealing ring 17;

the above is noteworthy:

1. when the air inlet 18 on the sealing ring 17 corresponds to the air inlet groove 16, the lower end of the drill barrel 2 can be kept smooth, so that gas extraction operation is facilitated, otherwise, when the air inlet 18 on the sealing ring 17 is staggered with the air inlet groove 16, the lower end of the drill barrel 2 can be ensured to be sealed, and the problem that soil enters the drill barrel to cause internal blockage in the drilling process is solved.

2. A switch structure is arranged between the sealing ring 17 and the cross rod 9, and the switch structure consists of a screw sleeve 20, a screw rod 21 and a plurality of fixing rods 19.

3. Hob 21 fixed mounting is at cross 9 lower extremes, the helicoidal cover 20 is on sealing washer 17 through a plurality of dead lever 19 fixed mounting, and helicoidal cover 20 and hob 21 are threaded connection, when pressing down adjustable ring 1, accessible roof 15 moves down with cross 9's cooperation drive hob 21 simultaneously, when it moves down, through its cooperation with helicoidal cover 20, can make helicoidal cover 20 rotate, then can make the position of inlet port 18 and air inlet duct 16 correspond each other gradually at the rotation in-process, thereby can carry out gas drainage operation, the device does not use the electric energy to the sealed of aperture and the switch of drill barrel 2, can effectively avoid taking out the in-process because of appearing the problem that the electric spark leads to gas explosion, the security has been ensured.

Claims (5)

1. A shaft bottom pressure reducing device for a mine comprises an adjusting ring (1) and a drill barrel (2), and is characterized in that an air outlet pipe (3) is connected onto the adjusting ring (1) in a sliding manner, a plurality of moving grooves (7) are formed in the side wall of the drill barrel (2), the moving grooves (7) are partially communicated with each other, a sealing plate (8) is connected into each moving groove (7) in a sliding manner, a plurality of sliding grooves (10) are formed in the inner wall of the adjusting ring (1), a sliding block is connected into each sliding groove (10) in a sliding manner, a cross rod (9) is installed between the sliding blocks in a matching manner, a connecting rod (11) is connected between each cross rod (9) and each sealing plate (8) in a swinging manner, a torsion spring (12) is installed between each connecting rod (11) and the corresponding sealing plate (8), and an adjusting structure is arranged on the, the inner wall of the lower side of the drill cylinder (2) is provided with an annular groove, a sealing ring (17) is connected in the annular groove in a rotating mode, a plurality of air inlet grooves (16) are formed in the side wall of the drill cylinder (2), each air inlet groove (16) is communicated with the annular groove, a plurality of air inlet holes (18) are formed in the sealing ring (17), and a switch structure is installed between the sealing ring (17) and the cross rod (9).

2. The mine shaft bottom pressure reducing device according to claim 1, wherein the adjusting structure is composed of an annular telescopic groove (4), a connecting ring (5), a transverse plate (14), a top plate (15) and a plurality of compression springs (6), the annular telescopic groove (4) is formed in the lower side wall of the adjusting ring (1), the connecting ring (5) is fixedly installed on the drill barrel (2), the upper end of the connecting ring (5) is slidably connected into the annular telescopic groove (4), the compression springs (6) are installed between the annular telescopic groove (4) and the connecting ring (5), the transverse plate (14) is fixedly installed in the adjusting ring (1), and the top plate (15) is fixedly installed at the lower end of the transverse plate (14).

3. The shaft bottom pressure reducing device for the mine shaft as claimed in claim 1, wherein the switch structure is composed of a spiral casing (20), a spiral rod (21) and a plurality of fixing rods (19), the spiral rod (21) is fixedly installed at the lower end of the cross rod (9), the spiral casing (20) is fixedly installed on the sealing ring (17) through the plurality of fixing rods (19), and the spiral casing (20) and the spiral rod (21) are in threaded connection.

4. A shaft bottom decompressor according to claim 1, characterized in that the side wall of the sealing plate (8) is fixedly provided with a plurality of limiting blocks, and the side wall of the moving groove (7) is provided with a plurality of limiting grooves (13) matched with the corresponding limiting blocks.

5. A downhole pressure reducing device for mines according to claim 1, wherein the surfaces of the adjusting ring (1), the drill-barrel (2) and the cross-bar (9) are coated with antistatic coating.

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