CN109915050B - Coal mine underground dry drilling orifice dust removing device and method - Google Patents
Coal mine underground dry drilling orifice dust removing device and method Download PDFInfo
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- CN109915050B CN109915050B CN201910231472.0A CN201910231472A CN109915050B CN 109915050 B CN109915050 B CN 109915050B CN 201910231472 A CN201910231472 A CN 201910231472A CN 109915050 B CN109915050 B CN 109915050B
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- 238000005553 drilling Methods 0.000 title claims abstract description 62
- 239000000428 dust Substances 0.000 title claims abstract description 46
- 239000003245 coal Substances 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000011435 rock Substances 0.000 claims abstract description 18
- 238000005507 spraying Methods 0.000 claims abstract description 9
- 238000009434 installation Methods 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 230000000903 blocking effect Effects 0.000 claims description 7
- 238000004873 anchoring Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 239000007921 spray Substances 0.000 abstract description 3
- 230000006378 damage Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Piles And Underground Anchors (AREA)
- Earth Drilling (AREA)
Abstract
The utility model provides a colliery is dry-type drilling drill way dust collector in pit, including outer tube and interior sleeve pipe, interior sleeve pipe is with the axial setting in the outer tube, in the drill way of outer tube with the axial installation, outer end of outer tube and interior sleeve pipe outer end are provided with the ring flange, the external diameter of ring flange is greater than the external diameter of outer tube, ring flange medial surface and coal rock wall contact and fix on the coal rock wall through fixing device, outer tube inner and interior sleeve pipe inner are provided with annular closure plate, evenly set up a plurality of spraying hole on the interior sleeve pipe, form annular cavity between outer tube and the interior sleeve pipe, be connected with the inlet tube with annular cavity intercommunication on the ring flange, be provided with the valve on the inlet tube. The invention also discloses a dust removing method adopting the device, which is convenient to install and operate, can timely and effectively catch dust generated in the dry drilling process, and the spray holes on the inner sleeve are uniformly distributed in a plurality of rows, so that the dust can be captured for multiple times, and the dust removing effect is ensured.
Description
Technical Field
The invention belongs to the technical field of coal mine safety exploitation, and particularly relates to a dust removal device and method for a coal mine underground dry drilling orifice.
Background
In the process of drilling the underground dry type drilling hole of the coal mine, compressed air is generally adopted to discharge powder through the inside of the hollow drill rod, so that a large amount of dust is generated, the dust not only can harm the physical health of workers, but also can influence the sight, increase the probability of work injury, and also can accelerate the abrasion of underground equipment and instruments, so that the dust generated in the drilling process of the dry type drilling hole is required to be treated.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a coal mine underground dry drilling orifice dust removing device and method which are simple in structure, convenient to operate and good in dust removing effect.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a colliery is dry-type drilling drill way dust collector in pit, including outer tube and interior sleeve pipe, interior sleeve pipe is with the axial setting in the outer tube, with the drilling direction of drilling for by outside inside direction, the outer tube is with the downthehole drill way of axial installation to the drilling, outer end of outer tube and interior sleeve pipe outer end are provided with the ring flange, the external diameter of ring flange is greater than the external diameter of outer tube, ring flange medial surface and coal rock wall contact and fix on the coal rock wall through fixing device, outer tube inner end and interior sleeve pipe inner end are provided with annular closure plate, evenly offered a plurality of spraying hole on the interior sleeve pipe, form annular cavity between outer tube and the interior sleeve pipe, be connected with the inlet tube with annular cavity intercommunication on the ring flange, be provided with the valve on the inlet tube.
The inner end part of the inner wall of the inner sleeve is provided with a wear-resistant sleeve.
The inner side surface of the annular blocking plate is fixedly connected with a conical guide sleeve in the same axial direction, the conical guide sleeve is of a conical structure with thick inner part and thin outer part, the diameter of the inner end of the conical guide sleeve is equal to that of the outer sleeve, and the diameter of the inner hole of the outer end of the conical guide sleeve is equal to that of the wear-resistant sleeve.
The fixing device is an anchor rod and a fastening nut, a plurality of mounting holes are formed in the flange plate along the circumferential direction, the anchor rod penetrates through the mounting holes to extend into the coal rock wall, and the fastening nut is in threaded connection with the outer end of the anchor rod and is in pressure connection with the flange plate.
The dust removing method of the coal mine underground dry drilling orifice dust removing device comprises the following steps,
(1) After the drilling position, the drilling diameter, the inclination angle, the length and the azimuth angle are determined, a drilling machine is started to drill, drilling is stopped after 2m is performed, the drilling with the depth of 2m is reamed, the total length of the outer sleeve and the conical sleeve is 2m, and the diameter of the reamed hole is slightly smaller than the outer diameter of the outer sleeve to stop reaming;
(2) The coal mine underground dry drilling hole orifice dust removing device is plugged into the hole orifice reaming section of the drilling hole until the flange plate is in close contact with the coal rock wall and is fixed on the coal rock wall through the fixing device;
(3) Connecting the inlet end of the water inlet pipe with a high-pressure water source under the coal mine;
(4) The diameter of the drill rod and the drill bit is smaller than the inner diameter of the inner sleeve, the drill rod and the drill bit are penetrated by the inner sleeve in the same axial direction, the drill is started to drive the drill rod and the drill bit to rotate at high speed to carry out dry drilling operation on a coal seam on the inner side of the conical guide sleeve, meanwhile, a valve on the water inlet pipe is opened, high-pressure air is sprayed from the inner part of the drill rod and is sprayed from the drill bit on the inner end, dust is discharged from a gap between the inner wall of the drill hole and the outer wall of the drill rod outwards, when the dust enters the inner sleeve from the conical sleeve, high-pressure water enters the annular cavity and is sprayed from the spraying hole, and the outwards overflowed dust is timely and effectively captured, and becomes coal slime to be discharged from the outer port of the inner sleeve after being soaked.
Before installing the coal mine underground dry type drilling hole orifice dust removing device, firstly constructing a plurality of anchor rod holes parallel to the drilling holes in the circumferential direction of the drilling holes, wherein the number of the anchor rod holes is equal to that of the installing holes on the flange plate, placing anchor rods into the anchor rod holes for anchoring, arranging screw threads at the outer ends of the anchor rods, inserting the outer sleeve pipe and the inner sleeve pipe into the drilled holes after reaming, simultaneously penetrating the installing hole holes on the flange plate into the outer ends of the anchor rods, and fixing by using fastening nuts to finish the installation and fixation of the fixing device.
By adopting the technical scheme, the conical sleeve plays a role in guiding dust into the inner sleeve, and the blocking at the annular baffle plate is avoided. During drilling operation, concentricity between the drill rod and the outer port of the inner sleeve is easy to control at the hole opening, and concentricity is difficult to control at the inner port of the inner sleeve, so that the inner wall of the inner port of the inner sleeve is provided with the wear-resistant sleeve, and the drill rod is prevented from directly contacting with the inner wall of the inner sleeve when rotating at a high speed, so that the service life of the inner sleeve is prolonged, water leakage after the inner sleeve is worn is prevented, and the effect of spraying and dust fall is influenced. The valve is used for adjusting the spraying amount through the spraying hole. The flange plate plays a role in limiting the length of the outer sleeve and the inner sleeve extending into the drilled hole, and is used for blocking a gap between the outer sleeve and the hole wall after reaming.
The flange head is fixed on the coal rock wall through the fixing device, so that the stability of the outer sleeve and the inner sleeve is ensured.
The invention is mainly used for dust removal of flat holes or upward holes in dry drilling operation, has scientific principle, simple structure, convenient installation and convenient operation, can timely and effectively catch dust generated in the dry drilling process, and the spray holes on the inner sleeve are uniformly distributed in a plurality of rows, can capture the dust for multiple times, and ensures the dust removal effect.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention during a drilling operation;
FIG. 2 is a schematic diagram of the structure of the present invention;
fig. 3 is a right side view of fig. 1.
Detailed Description
As shown in fig. 1, 2 and 3, the coal mine underground dry drilling hole opening dust removing device comprises an outer sleeve 1 and an inner sleeve 2, wherein the inner sleeve 2 is coaxially arranged in the outer sleeve 1, the outer sleeve 1 is coaxially arranged in a hole opening of a drilling hole 3 by taking the drilling direction of the drilling hole as the direction from outside to inside, a flange 4 is arranged at the outer end of the outer sleeve 1 and the outer end of the inner sleeve 2, the outer diameter of the flange 4 is larger than the outer diameter of the outer sleeve 1, the inner side surface of the flange 4 is in contact with a coal rock wall and is fixed on the coal rock wall through a fixing device, annular blocking plates 5 are arranged at the inner end of the outer sleeve 1 and the inner end of the inner sleeve 2, a plurality of spraying holes 6 are uniformly formed in the inner sleeve 2, an annular cavity 7 is formed between the outer sleeve 1 and the inner sleeve 2, a water inlet pipe 8 communicated with the annular cavity 7 is connected to the flange 4, and a valve 9 is arranged on the water inlet pipe 8.
The inner end of the inner wall of the inner sleeve 2 is provided with a wear-resistant sleeve 10.
The inner side surface of the annular blocking plate 5 is fixedly connected with a conical guide sleeve 11 in the same axial direction, the conical guide sleeve 11 is of a conical structure with thick inner part and thin outer part, the diameter of the inner end of the conical guide sleeve 11 is equal to that of the outer sleeve 1, and the diameter of the inner hole of the outer end of the conical guide sleeve 11 is equal to that of the wear-resistant sleeve 10.
The fixing device is an anchor rod 13 and a fastening nut 14, a plurality of mounting holes are formed in the flange plate along the circumferential direction, the anchor rod 13 penetrates through the mounting holes to extend into the coal rock wall, and the fastening nut 14 is in threaded connection with the outer end of the anchor rod 13 and is in pressure connection with the flange plate.
The dust removing method of the coal mine underground dry drilling 3 orifice dust removing device comprises the following steps:
(1) After the drilling position, the drilling diameter, the inclination angle, the length and the azimuth angle are determined on the coal body 12, starting a drilling machine to drill holes 3, stopping drilling after 2m, reaming the holes 3 with the depth of 2m, wherein the total length of the outer sleeve 1 and the conical sleeve is 2m, and the diameter of the reamed holes is slightly smaller than the outer diameter of the outer sleeve 1;
(2) The method comprises the steps of (1) plugging a coal mine underground dry drilling hole 3 orifice dust removal device into an orifice reaming section of the drilling hole 3 until a flange 4 is in close contact with an orifice coal rock wall and is fixed on the coal rock wall through a fixing device;
(3) Connecting the inlet end of the water inlet pipe 8 with a high-pressure water source under the coal mine;
(4) The diameter of the drill rod and the diameter of the drill bit are smaller than the inner diameter of the inner sleeve 2, the drill rod and the drill bit are penetrated by the inner sleeve 2 coaxially, the drill is started to drive the drill rod and the drill bit to rotate at a high speed to carry out dry drilling operation on a coal seam at the inner side of the conical guide sleeve 11, meanwhile, a valve 9 on the water inlet pipe 8 is opened, high-pressure air is introduced into the drill rod and sprayed out from the drill bit at the inner end, dust is discharged outwards from a gap between the inner wall of the drill hole 3 and the outer wall of the drill rod, when the dust enters the inner sleeve 2 from the conical sleeve, high-pressure water enters the annular cavity 7 and sprayed out from the spray hole 6, the outwards overflowed dust is timely and effectively captured, and the dust is sprayed into coal slime and discharged from an outer port of the inner sleeve 2.
Before installing the coal mine underground dry type drilling hole opening dust removing device, firstly constructing a plurality of anchor rod 13 holes parallel to the drilling holes in the circumferential direction of the drilling holes, wherein the number of the anchor rod 13 holes is equal to that of the installing holes in the flange plate 4, placing the anchor rods 13 into the anchor rod 13 holes for anchoring, the outer ends of the anchor rods 13 are provided with threads, and when the outer sleeve 1 and the inner sleeve 2 are plugged into the drilled holes after reaming, the installing holes in the flange plate 4 penetrate through the outer ends of the anchor rods 13 and are fixed by the fastening nuts 14, so that the installation and fixation of the fixing device are completed.
The present embodiment is not limited in any way by the shape, material, structure, etc. of the present invention, and any simple modification, equivalent variation and modification made to the above embodiments according to the technical substance of the present invention are all included in the scope of protection of the technical solution of the present invention.
Claims (3)
1. Colliery is dry-type drilling drill way dust collector in pit, its characterized in that: the inner sleeve is coaxially arranged in the outer sleeve, the drilling direction of a drilling hole is the direction from outside to inside, the outer sleeve is coaxially arranged in a hole opening of the drilling hole, the outer end of the outer sleeve and the outer end of the inner sleeve are provided with flange plates, the outer diameter of the flange plates is larger than the outer diameter of the outer sleeve, the inner side surface of the flange plates is in contact with a coal rock wall and is fixed on the coal rock wall through a fixing device, annular blocking plates are arranged at the inner end of the outer sleeve and the inner end of the inner sleeve, a plurality of spraying holes are uniformly formed in the inner sleeve, an annular cavity is formed between the outer sleeve and the inner sleeve, a water inlet pipe communicated with the annular cavity is connected to the flange plates, and a valve is arranged on the water inlet pipe;
the inner end part of the inner wall of the inner sleeve is provided with a wear-resistant sleeve;
the inner side surface of the annular blocking plate is fixedly connected with a conical guide sleeve in the same axial direction, the conical guide sleeve is of a conical structure with thick inner part and thin outer part, the diameter of the inner end of the conical guide sleeve is equal to that of the outer sleeve, and the diameter of the inner hole of the outer end of the conical guide sleeve is equal to that of the wear-resistant sleeve;
the fixing device is an anchor rod and a fastening nut, a plurality of mounting holes are formed in the flange plate along the circumferential direction, the anchor rod penetrates through the mounting holes to extend into the coal rock wall, and the fastening nut is in threaded connection with the outer end of the anchor rod and is in pressure connection with the flange plate.
2. The dust removal method of the coal mine underground dry drilling orifice dust removal device according to claim 1, wherein: comprises the steps of,
(1) After the drilling position, the drilling diameter, the inclination angle, the length and the azimuth angle are determined, a drilling machine is started to drill, drilling is stopped after 2m is performed, the drilling with the depth of 2m is reamed, the total length of the outer sleeve and the conical sleeve is 2m, and the diameter of the reamed hole is slightly smaller than the outer diameter of the outer sleeve to stop reaming;
(2) The coal mine underground dry drilling hole orifice dust removing device is plugged into the hole orifice reaming section of the drilling hole until the flange plate is in close contact with the coal rock wall and is fixed on the coal rock wall through the fixing device;
(3) Connecting the inlet end of the water inlet pipe with a high-pressure water source under the coal mine;
(4) The diameter of the drill rod and the drill bit is smaller than the inner diameter of the inner sleeve, the drill rod and the drill bit are penetrated by the inner sleeve in the same axial direction, the drill is started to drive the drill rod and the drill bit to rotate at high speed to carry out dry drilling operation on a coal seam on the inner side of the conical guide sleeve, meanwhile, a valve on the water inlet pipe is opened, high-pressure air is sprayed from the inner part of the drill rod and is sprayed from the drill bit on the inner end, dust is discharged from a gap between the inner wall of the drill hole and the outer wall of the drill rod outwards, when the dust enters the inner sleeve from the conical sleeve, high-pressure water enters the annular cavity and is sprayed from the spraying hole, and the outwards overflowed dust is timely and effectively captured, and becomes coal slime to be discharged from the outer port of the inner sleeve after being soaked.
3. The dust removal method of the coal mine underground dry drilling orifice dust removal device according to claim 2, wherein: before installing the coal mine underground dry type drilling hole orifice dust removing device, firstly constructing a plurality of anchor rod holes parallel to the drilling holes in the circumferential direction of the drilling holes, wherein the number of the anchor rod holes is equal to that of the installing holes on the flange plate, placing anchor rods into the anchor rod holes for anchoring, arranging screw threads at the outer ends of the anchor rods, inserting the outer sleeve pipe and the inner sleeve pipe into the drilled holes after reaming, simultaneously penetrating the installing hole holes on the flange plate into the outer ends of the anchor rods, and fixing by using fastening nuts to finish the installation and fixation of the fixing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910231472.0A CN109915050B (en) | 2019-03-26 | 2019-03-26 | Coal mine underground dry drilling orifice dust removing device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910231472.0A CN109915050B (en) | 2019-03-26 | 2019-03-26 | Coal mine underground dry drilling orifice dust removing device and method |
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| CN109915050A CN109915050A (en) | 2019-06-21 |
| CN109915050B true CN109915050B (en) | 2023-11-17 |
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| CN201910231472.0A Active CN109915050B (en) | 2019-03-26 | 2019-03-26 | Coal mine underground dry drilling orifice dust removing device and method |
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| CN112282677B (en) * | 2020-11-18 | 2023-02-17 | 刘庆 | Outburst-prevention drilling ring type orifice spray dust removal device |
| CN114178263B (en) * | 2021-12-14 | 2023-03-07 | 中国核工业二四建设有限公司 | Cleaning device and method for high-precision penetration assembly |
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|---|---|---|---|---|
| CN101387203A (en) * | 2008-10-08 | 2009-03-18 | 淮南矿业(集团)有限责任公司 | Rapid dust removal method and device in tunnel |
| CN102269009A (en) * | 2011-07-25 | 2011-12-07 | 中国矿业大学 | Ultra-micro magnetized foam drilling dust remover |
| CN202176355U (en) * | 2011-08-17 | 2012-03-28 | 安徽恒源煤电股份有限公司祁东煤矿 | Coal mine downhole drilling hole dust-reducing device |
| CN206917626U (en) * | 2017-06-14 | 2018-01-23 | 河北百方通用机械有限公司 | Take out type gas prevention and gush out drilling hole dust collector device |
| CN209855729U (en) * | 2019-03-26 | 2019-12-27 | 河南理工大学 | Dry type drilling orifice dust removing device for underground coal mine |
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2019
- 2019-03-26 CN CN201910231472.0A patent/CN109915050B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101387203A (en) * | 2008-10-08 | 2009-03-18 | 淮南矿业(集团)有限责任公司 | Rapid dust removal method and device in tunnel |
| CN102269009A (en) * | 2011-07-25 | 2011-12-07 | 中国矿业大学 | Ultra-micro magnetized foam drilling dust remover |
| CN202176355U (en) * | 2011-08-17 | 2012-03-28 | 安徽恒源煤电股份有限公司祁东煤矿 | Coal mine downhole drilling hole dust-reducing device |
| CN206917626U (en) * | 2017-06-14 | 2018-01-23 | 河北百方通用机械有限公司 | Take out type gas prevention and gush out drilling hole dust collector device |
| CN209855729U (en) * | 2019-03-26 | 2019-12-27 | 河南理工大学 | Dry type drilling orifice dust removing device for underground coal mine |
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| CN109915050A (en) | 2019-06-21 |
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