CN211038514U - Coal mine gas drainage hole-protecting push-pull pipe device - Google Patents
Coal mine gas drainage hole-protecting push-pull pipe device Download PDFInfo
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- CN211038514U CN211038514U CN201921789463.5U CN201921789463U CN211038514U CN 211038514 U CN211038514 U CN 211038514U CN 201921789463 U CN201921789463 U CN 201921789463U CN 211038514 U CN211038514 U CN 211038514U
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Abstract
The utility model relates to a coal mine gas extraction hole-protecting push-pull pipe device, belonging to the technical field of gas extraction; the hole protecting pipe is clamped and fixed through the clamping device, the clamping device is connected with the driving device, the clamping device rotates along with the driving device under the driving of a gear of the driving device, the hole protecting pipe is pushed to enter a drilled hole through a pneumatic motor, meanwhile, the tail end of the hole protecting pipe is connected with the slag discharging device, coal slag and the like are continuously discharged, and when the hole protecting pipe needs to be taken out, the pushing and pulling pipe device is reversely arranged on the last section of the hole protecting pipe to be pulled out; the device can suck out the coal cinder in the drill hole in time, the hole protecting pipe can be conveniently inserted into the drill hole, the hole protecting pipe in the drill hole can be pulled out, the coal cinder in the drill hole is discharged when the hole protecting pipe is pulled out, the hole protecting sieve pipe is recycled and reused, the gas extraction cost in a soft coal seam is reduced, hole collapse is prevented, and the gas extraction amount is increased.
Description
Technical Field
The utility model belongs to the technical field of gas drainage, a colliery gas drainage hole protecting device is related to, specifically is a device of recoverable multiplexing formula screen pipe hole protecting is taken out in colliery gas drainage, is particularly useful for the high gas coal seam of soft and soft.
Background
The coal bed firmness coefficient difference (f is less than 1) of most high gas and coal and gas outburst mines in China, the mining depth is gradually increased along with the mining, and a plurality of shallow low gas mines can be converted into deep high gas mines. The soft coal layer is caused by fault and layer slip, and is mainly composed of crushed coal and minced coal, and the strength of the coal body is low. If the borehole is drilled into a soft coal seam, the borehole will often collapse and fail. In gas extraction, the failed drill hole can not effectively extract gas in the coal seam, so that the residual gas in the coal seam can become hidden danger of gas disaster accidents, the collapse of the drill hole is prevented, and the key of gas control in the soft coal seam is to improve the effective length of the drill hole.
The screen pipe hole protecting technology is formed under the condition that the geological conditions are more and more complicated along with the expansion of production scale. When drilling in a soft coal seam, in order to avoid collapse and blockage of the drill hole caused by unstable hole walls and other reasons, after the drilling operation is completed, a PVC or PE sieve tube is arranged in the drill hole and used as a hole protecting tube and an extraction tube. The large amount of coal slag deposited near the screen can make the screen difficult to extract due to the borehole collapse. In the subsequent coal mining process, the sieve tube is damaged by a coal mining machine and then is conveyed out together with coal. However, the sieve tube made of the PVC pipe is relatively expensive, and if the sieve tube is used only once, a large number of sieve tubes are needed in the gas extraction stage, which causes waste of the PVC pipe and increases the cost of gas extraction. During hole protection operation, a large amount of coal slag is left in a drilled hole, and if the coal slag cannot be removed in time, the resistance of a hole sealing pipe is too large, and a lower pipe fails; during the pipe drawing operation, the local collapse coal body covers the pipe wall, and if the local collapse coal body cannot be cleaned, the hole protection pipe cannot be drawn out.
"an inflatable drilling and sealing section residue cleaning device and a use method thereof" with the publication number of CN108204213A, which is disclosed in patent number 6, 26.2018, ensure that the cleaning work is smoothly carried out by utilizing the position relationship of two forms of inflation and non-inflation of an expansion device; the invention discloses a method for sending a hole protecting pipe of a gas extraction hole of a soft coal seam with the publication number of CN102587961A in 7, 18 and 2012 of Chinese invention patent, wherein when the hole protecting and sending extraction pipe enters a drill hole, high-pressure air is pressed into the extraction pipe, the air flows out from the position between the wall of the drill hole and the extraction pipe, and simultaneously, generated coal slag is discharged, so that the problems of large resistance and the like caused by the coal slag are solved; the utility model discloses a pull out pipe device and the tube drawing machine of publication number CN206971090U that chinese utility model patent 2018 was disclosed 2 month 6, utilizes slider device to be connected with the outer lane, forms the pipeline passageway, can be used to extract the pipeline, but above-mentioned invention and utility model all have because the hindrance of cinder, lead to difficulty in the intubate, the phenomenon that can not extract in the time of the tube drawing.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes prior art's is not enough, provides a colliery gas drainage hole protection push and pull pipe device, and the purpose can in time be with the cinder suction in the drilling, inserts the hole protection pipe in the convenient drilling, can extract the hole protection pipe in the drilling again, discharges the cinder in the drilling when extracting the hole protection pipe, realizes the recovery and the multiple utilization of hole protection screen pipe, solves in the drilling cinder to the problem that the admission pipe led to the fact the influence with the tube drawing.
In order to achieve the above purpose, the present invention is achieved by the following technical solutions.
A coal mine gas extraction hole protecting push-pull pipe device comprises a clamping device, a driving device and a slag discharging device, wherein the clamping device comprises a clamp holder, a baffle and a bearing, the baffle is installed inside the bearing and is matched with the inner diameter of the bearing, so that the baffle can rotate relative to the bearing, and the bearing is arranged on a plane supporting plate through a fixing support; a clamp holder for clamping the hole protection pipe is arranged in the center of the baffle plate, and the axis of the clamp holder is communicated with the drill hole; the driving device comprises pneumatic single columns, connecting rods, a pneumatic motor, a driven gear and a driving gear, the supporting plate is provided with a slide way, the pneumatic motor is arranged on the slide way and can slide back and forth along the slide way, and the fixed ends of the pneumatic single columns are respectively fixed with the outer circumference of the baffle; the shaft center of the driving gear is connected with a pneumatic motor through a connecting rod, the pneumatic motor is used for driving the driving gear to rotate forwards and reversely, the driven gear is meshed with the driving gear, the holder is fixed with the driven gear, the holder is driven by the driven gear to rotate, the holder is connected with the telescopic rod end of the pneumatic single support, and the tail end of the hole protecting pipe is connected with the slag discharging device.
Furthermore, the slag discharging device is a negative pressure dust collector.
Furthermore, the bottom of the supporting plate is connected with a lifting support.
Furthermore, a supporting device for supporting the clamper is arranged on the supporting plate.
Furthermore, the gripper is connected with the telescopic rod ends of the two pneumatic single support columns which are arranged in parallel.
Furthermore, the hole protecting pipes are of a multi-section structure, each section of hole protecting pipe is connected through threads, and anti-falling pins are arranged at the threads and penetrate through male and female connectors of the two sections of hole protecting pipes.
Wherein, the suction of the negative pressure dust collector is increased along with the increase of the inserting depth of the hole protecting pipe.
The utility model discloses produced beneficial effect does for prior art.
The utility model discloses an inside inserting every section of hole protecting pipe combination drilling, in order to prevent that the drilling from being blocked up the back hole protecting pipe by the cinder, the buggy plugs up the back hole protecting pipe and can not go into, all the time through the cinder in negative pressure cleaner with drilling in the in-process of pushing in, buggy suction, after the hole protecting pipe is sent into the final hole site, carry out the hole sealing through the hole sealing pipe and external gas drainage pipe again and carry out gas drainage, after gas drainage, rethread external force pulls out the hole protecting pipe, in order to prevent the cinder, the hole protecting pipe can not pull out after the buggy blocks up the drilling, in-process of pulling out through negative pressure cleaner with the cinder all the time, buggy suction, in the in-process of pushing in and pulling out the hole protecting pipe, in order to make things convenient for the more laborsaving push in the hole protecting pipe or pull out the drilling, can carry out the rotatory hole protecting pipe while pushing in, the rotatory hole protecting; the device can suck out the coal cinder in the drill hole in time, the hole protecting pipe can be conveniently inserted into the drill hole, the hole protecting pipe in the drill hole can be pulled out, the coal cinder in the drill hole is discharged when the hole protecting pipe is pulled out, the hole protecting sieve pipe is recycled and reused, the gas extraction cost in a soft coal seam is reduced, hole collapse is prevented, and the gas extraction amount is increased.
Drawings
Fig. 1 is a schematic structural view of the hole-protecting device of the present invention in use.
Fig. 2 is a schematic structural view of the hole-protecting device of the present invention.
Fig. 3 is a schematic view of the hole-protecting device according to the present invention, wherein the driving gear drives the driven gear to rotate.
Fig. 4 is a schematic view of the connection of the pneumatic single column, the chuck and the bearing of the hole-protecting device of the present invention.
The vacuum cleaner comprises a lifting support 1, a pneumatic single column 2, a supporting guard plate 3, a holder 4, a pneumatic motor 5, a supporting plate 6, a baffle 7, a bearing 8, a fixing support 9, a driven gear 10, a driving gear 11, a connecting rod 12, a drill hole 13, a hole protecting pipe 14 and a negative pressure dust collector 15.
Detailed Description
In order to make the technical problem, technical scheme and beneficial effect that the utility model will solve more clearly understand, combine embodiment and attached drawing, it is right to go on further detailed description the utility model discloses. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The technical solution of the present invention is described in detail below with reference to the embodiments and the drawings, but the scope of protection is not limited thereto.
As shown in fig. 1 and 2, the coal mine gas extraction hole protecting and pipe pushing and pulling device comprises a clamping device, a driving device and a slag discharging device, wherein the clamping device comprises a clamp 4, a baffle 7 and a bearing 8, the baffle 7 is installed inside the bearing 8, the baffle 7 is matched with the inner diameter of the bearing 8, the baffle 7 can rotate relative to the bearing 8, and the bearing 8 is arranged on a plane supporting plate 6 through a fixing support 9; the supporting plate 6 is provided with a supporting guard 3 for supporting the clamper 4. The bottom of the supporting plate 6 is connected with a lifting bracket 1. A clamp 4 for clamping a hole protection pipe 14 is arranged at the center of the baffle 7, and the axis of the clamp 4 is communicated with a drill hole 13; as shown in fig. 3 and 4, the driving device includes pneumatic single columns 2, a connecting rod 12, a pneumatic motor 5, a driven gear 10 and a driving gear 11, a supporting plate 6 is provided with a slideway, the pneumatic motor 5 is arranged on the slideway so as to be capable of sliding back and forth along the slideway, and the fixed ends of the two pneumatic single columns 2 are respectively fixed with the outer circumference of a baffle 7; the shaft center of the driving gear 11 is connected with the pneumatic motor 5 through the connecting rod 12, the pneumatic motor 5 is used for driving the driving gear 11 to rotate forwards and backwards, the driven gear 10 is meshed with the driving gear 11, the holder 4 is fixed with the driven gear 10, the holder 4 is driven by the driven gear 10 to rotate, the holder 4 is connected with the telescopic rod ends of the two pneumatic single supporting columns 2 which are installed in parallel, the hole protecting pipes 14 are of a multi-section structure, each section of hole protecting pipe 14 is connected through threads, the tail end of the last section of hole protecting pipe 14 is connected with the slag discharging device, and the slag discharging device is a negative pressure dust collector 15.
One end of the supporting plate 6 is arranged close to the coal seam, the other end of the supporting plate is suspended, and a slide way is arranged on the supporting plate 6; the bottom end of the lifting bracket 1 is fixed at one end part of the supporting plate 6 tightly attached to the coal seam, and a chuck matched with the hole protecting pipe 14 is installed at the axis of the clamper 4.
Firstly, the pneumatic motor 5 drives the driving gear 11 to rotate, the driving gear 11 drives the driven gear 10, the driven gear 10 rotates to drive the holder 4 to rotate, the hole protecting pipe 14 matched with the holder 4 rotates to drive the bearing 8 to rotate, the baffle 7 matched with the inner ring of the bearing 8 rotates to drive the two pneumatic single columns 2 to rotate, forward rotation and reverse rotation can be continuously realized according to forward rotation rotating time set by the pneumatic motor 5, when the hole protecting pipe 14 needs to be pulled out, the two pneumatic single columns 2 oil cylinders extend to drive the pneumatic motor 5 on the right side and the lifting support 1 moves backwards to pull out the hole protecting pipe, rotation and pulling out are realized, when the hole protecting pipe 14 needs to be pushed into a drill hole, the two pneumatic single columns 2 oil cylinders contract, the pneumatic motor 5 and the lifting support 1 move forwards to push in the hole protecting pipe, and the rotation and the pushing in are realized.
The diameter of the sieve mesh hole protecting pipe is equal to that of the sieve mesh hole protecting pipe, and the diameter of the sieve mesh hole protecting pipe and the density of the sieve mesh are gradually reduced along with the increase of the depth of entering the drill hole.
The hole protecting pipes 14 are connected through threads, and anti-drop pins are arranged at the threads and penetrate through male and female joints of the two sections of hole protecting pipes.
The suction of the vacuum cleaner 15 increases with the depth of insertion of the grommet.
The inner diameter of the hole sealing pipe is 1.4-1.6 times of the outer diameter of the hole protecting pipe 14.
The specific working process is as follows:
the method comprises the following steps: and (3) drilling, namely drilling holes by using a 113mm drill bit, inserting the head end of a first 5m long phi 108 x 6mm sieve-hole-free hole protection pipe 14 into the drilled hole 13 after the holes are drilled, inserting the pipe body of the hole protection pipe 14 into the push-pull pipe device, connecting the pipe orifice at the tail end of the hole protection pipe 14 with a negative pressure dust collector 15, pushing the first section of sieve-hole-free hole protection pipe into the drilled hole 13 by using the sieve pipe hole protection device, and starting the negative pressure dust collector 15 to suck out the pulverized coal in the drilled hole 13.
Step two: connecting a second section of 5m long hole-protecting pipe 14 without sieve holes to the tail end of a first section of hole-protecting pipe 14, connecting two sections of hole-protecting pipes by using the threads between the hole-protecting pipes 14, connecting a male joint and a female joint at the thread positions, connecting a negative pressure dust collector 15 to the tail end pipe opening of the second section of hole-protecting pipe without sieve holes, pushing the second section of hole-protecting pipe 14 without sieve holes into the drill hole 13 by using the sieve pipe hole-protecting device, and starting the negative pressure dust collector 15 to suck out the coal dust in the drill hole 13 in the pushing process; as the length of the grommet 14 increases, the negative pressure of the negative pressure cleaner 15 gradually increases.
Step three: and repeating the second step, when the number of the hole protecting pipes 14 without the sieve holes entering the drill hole reaches 4, replacing the hole protecting pipes 14 without the sieve holes with the hole protecting pipes 14 with the sieve holes of the same specification, wherein the diameter of the sieve holes and the density of the sieve holes of the hole protecting pipes 14 with the sieve holes are gradually reduced along with the increase of the depth of the drill hole.
Step four: and pushing the hole protecting pipe 14 with the sieve holes into the drill hole 13 by using the sieve pipe hole protecting device until the hole protecting pipe 14 with the sieve holes is pushed still, and at the moment, the hole protecting pipe 14 with the sieve holes in the next section is not required to be connected with the tail end of the previous section, and the pipe pushing and pulling device is removed.
Step five: and sleeving the tail end of the last hole-protecting pipe 14 with a hole-sealing pipe of 151.2 × 6mm, inserting the hole-sealing pipe into the drill hole 13, sealing the hole with cement slurry for 20 meters, and connecting the hole-sealing pipe with a gas-pumping pipe.
Step six: when the gas extraction time of the drilled hole exceeds 90d, reversely installing the sieve tube hole protecting device at the tail end of the last section of hole protecting tube 14, connecting a negative pressure dust collector 15 with the tail end pipe orifice of the last section of 14 hole protecting tube with sieve holes, pulling out the hole protecting tube 14 section by section and cleaning coal scraps in the drilled hole; when the hole protecting pipe 14 is not pulled out, the pneumatic motor can be started to enable the supporting plate 6 and the horizontal surface of the lifting support 1 to rotate left and right for a certain angle, and after the hole protecting pipe 14 is pulled out, the hole protecting pipe is orderly for standby.
The above description is for further details of the present invention with reference to specific preferred embodiments, and it should not be understood that the embodiments of the present invention are limited thereto, and it will be apparent to those skilled in the art that the present invention can be implemented in a plurality of simple deductions or substitutions without departing from the scope of the present invention, and all such alterations and substitutions should be considered as belonging to the present invention, which is defined by the appended claims.
Claims (6)
1. The coal mine gas extraction hole-protecting pipe-pushing and pulling device is characterized by comprising a clamping device, a driving device and a slag discharging device, wherein the clamping device comprises a clamp holder (4), a baffle (7) and a bearing (8), the baffle (7) is installed inside the bearing (8), the baffle (7) is matched with the inner diameter of the bearing (8), the baffle (7) can rotate relative to the bearing (8), and the bearing (8) is arranged on a plane supporting plate (6) through a fixing support (9); a clamp holder (4) for clamping a hole protection pipe (14) is arranged at the center of the baffle (7), and the axis of the clamp holder (4) is communicated with the drill hole (13); the driving device comprises pneumatic single columns (2), connecting rods (12), a pneumatic motor (5), a driven gear (10) and a driving gear (11), a slide way is arranged on the supporting plate (6), the pneumatic motor (5) is arranged on the slide way and can slide back and forth along the slide way, and the fixed ends of the pneumatic single columns (2) are respectively fixed with the outer circumference of the baffle plate (7); the axle center of driving gear (11) passes through connecting rod (12) to be connected with pneumatic motor (5), and pneumatic motor (5) are used for driving corotation, the reversal of driving gear (11), and driven gear (10) and driving gear (11) gear engagement, holder (4) are fixed with driven gear (10), make holder (4) rotate under driven gear (10)'s drive, and holder (4) link to each other with the flexible rod end of pneumatic monomer post (2), the end connection of hole protecting pipe (14) row sediment device.
2. The coal mine gas extraction hole-protecting push-pull pipe device according to claim 1, characterized in that the slag discharging device is a negative pressure dust collector (15).
3. The coal mine gas extraction hole-protecting pipe-pulling device according to claim 1, characterized in that a lifting support (1) is connected to the bottom of the support plate (6).
4. The coal mine gas extraction hole-protecting push-pull pipe device according to claim 1, characterized in that a supporting device for supporting the holder (4) is arranged on the supporting plate (6).
5. The coal mine gas extraction hole-protecting pipe-pulling device according to claim 1, characterized in that the holder (4) is connected with the telescopic rod ends of two pneumatic single columns (2) which are installed in parallel.
6. The coal mine gas extraction hole-protecting push-pull pipe device according to claim 1, characterized in that the hole-protecting pipe (14) is of a multi-section structure, and each section of hole-protecting pipe (14) is connected through threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921789463.5U CN211038514U (en) | 2019-10-23 | 2019-10-23 | Coal mine gas drainage hole-protecting push-pull pipe device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921789463.5U CN211038514U (en) | 2019-10-23 | 2019-10-23 | Coal mine gas drainage hole-protecting push-pull pipe device |
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| CN211038514U true CN211038514U (en) | 2020-07-17 |
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| CN201921789463.5U Active CN211038514U (en) | 2019-10-23 | 2019-10-23 | Coal mine gas drainage hole-protecting push-pull pipe device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116066169A (en) * | 2023-03-10 | 2023-05-05 | 国家能源集团乌海能源有限责任公司 | Gas extraction device and gas extraction method |
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2019
- 2019-10-23 CN CN201921789463.5U patent/CN211038514U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116066169A (en) * | 2023-03-10 | 2023-05-05 | 国家能源集团乌海能源有限责任公司 | Gas extraction device and gas extraction method |
| CN116066169B (en) * | 2023-03-10 | 2024-03-26 | 国家能源集团乌海能源有限责任公司 | Gas extraction device and gas extraction method |
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