CN108301799A - A kind of hole pumping and mining dust-extraction unit and its application method - Google Patents
A kind of hole pumping and mining dust-extraction unit and its application method Download PDFInfo
- Publication number
- CN108301799A CN108301799A CN201810289424.2A CN201810289424A CN108301799A CN 108301799 A CN108301799 A CN 108301799A CN 201810289424 A CN201810289424 A CN 201810289424A CN 108301799 A CN108301799 A CN 108301799A
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- China
- Prior art keywords
- dust
- dedusting
- drilling
- hole
- extraction unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000000605 extraction Methods 0.000 title claims abstract description 69
- 238000005065 mining Methods 0.000 title claims abstract description 32
- 238000005086 pumping Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000000428 dust Substances 0.000 claims abstract description 75
- 238000005553 drilling Methods 0.000 claims abstract description 59
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 20
- 238000005192 partition Methods 0.000 claims description 6
- 239000003595 mist Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 3
- 239000000284 extract Substances 0.000 claims description 2
- 238000002955 isolation Methods 0.000 claims description 2
- 241001074085 Scophthalmus aquosus Species 0.000 claims 1
- 239000003818 cinder Substances 0.000 claims 1
- 239000000843 powder Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 238000010276 construction Methods 0.000 abstract description 8
- 238000009434 installation Methods 0.000 abstract description 5
- 239000012141 concentrate Substances 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 3
- 238000000151 deposition Methods 0.000 abstract description 3
- 238000003825 pressing Methods 0.000 abstract description 2
- 239000003245 coal Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/01—Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
- E21B21/015—Means engaging the bore entrance, e.g. hoods for collecting dust
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/14—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using liquids and gases, e.g. foams
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of hole pumping and mining dust-extraction units, including the drilling rod that drills, the drilling drilling-rod external wall is socketed with hole wall casing, wherein, hole wall casing far from drill bit one end is tightly connected with orifice dust catcher, and orifice dust catcher passes through drainage tube and dedusting extraction case unicom;The invention also discloses a kind of application methods of hole pumping and mining dust-extraction unit, technical solution using the present invention, the device reduces pollution of the dust to work site environments by dust removal installation, it not only overcomes the wind power ganged Water jet stream dedusting ventilator of prior art drilling construction onsite application and is dusted the defect for being difficult to avoid that dust from flying, simultaneously, the generation for avoiding gas accident ensure that the safety in production of concordant drilling site;The dust for pressing wind deslagging to generate in production process is collected using the device and concentrates depositing dust, and dust removal efficiency is up to 99% or more;The arrangement achieves the extractions when drilling for the larger drilling use of gas emission in concordant drilling drilling process, effectively prevent the generation of gas accident.
Description
Technical field
The invention belongs to coal mining field, it is more particularly related to a kind of hole pumping and mining dust-extraction unit and its
Application method.
Background technology
In coal mining, gas control drilling especially concordant drills, and is all to construct in coal seam, form of construction work is adopted
With pressure wind deslagging drilling process, this form of construction work causes to generate the dust largely flown upward in work progress, not only causes to construct
The environmental pollution at scene endangers the health of the producer, and a large amount of dust in coal mine bottom even causes to burn and explode, and gives well
Lower safety in production brings hidden danger;The prior art is dusted using drilling site using wind power ganged Water jet stream dedusting ventilator, but
It is this single dedusting method, it is difficult to which the dust removal requirement for meeting drilling site brings hidden danger to safety in production.
Invention content
Technical problem to be solved by the invention is to provide a kind of hole pumping and mining dedustings of guarantee concordant drilling safe production
Device.
To achieve the goals above, the technical solution that the present invention takes is:A kind of hole pumping and mining dust-extraction unit provided,
Including the drilling rod that drills, the drilling drilling-rod external wall is socketed with hole wall casing, wherein the hole wall casing far from drill bit one end and hole
Mouth deduster is tightly connected, and orifice dust catcher passes through drainage tube and dedusting extraction case unicom.
A kind of hole pumping and mining dust-extraction unit disclosed by the invention, orifice dust catcher include removing dirt cup, and drilling drilling rod is along dedusting
Cylinder is laterally pierced by, wherein except dirt cup one end is connect with hole wall bobbin seal, the gap location of the other end and drilling drilling rod is equipped with aperture
Sealing ring, except the top of dirt cup is equipped with bend pipe, bend pipe is connect with drainage tube, and bottom is equipped with mud hole.
A kind of hole pumping and mining dust-extraction unit disclosed by the invention, dedusting extraction case set standoff babinet for bottom, wherein
The top side of babinet is connect with drainage tube, and wind power ganged Water jet stream dedusting ventilator, babinet top are additionally provided with drainage tube junction
The other side in portion is equipped with the control valve that connect with gas drainage system, be equipped at control valve in babinet be isolated dust every
Plate, babinet are equipped with scum hole close to the side wall of bottom side.
A kind of hole pumping and mining dust-extraction unit disclosed by the invention, wind power ganged Water jet stream dedusting ventilator are inserted vertically into babinet
In, dust suction side and the drainage tube of wind power ganged Water jet stream dedusting ventilator are tightly connected, and dust outlet side extends in babinet,
The part that wind power ganged Water jet stream dedusting ventilator is placed in outside babinet is additionally provided with air duct and feed pipe.
A kind of hole pumping and mining dust-extraction unit disclosed by the invention, air duct and feed pipe are the tube body of threeway, and outlet end is set
In the cylinder of wind power ganged Water jet stream dedusting ventilator.
A kind of hole pumping and mining dust-extraction unit disclosed by the invention, drainage tube are hose, the dedusting of one end and orifice dust catcher
Cylinder is tightly connected, and the other end is socketed behind the dust suction side of wind power ganged Water jet stream dedusting ventilator and seals company with dedusting extraction case
It connects.
A kind of hole pumping and mining dust-extraction unit disclosed by the invention, hole wall casing are equipped with the connecting pin except dirt cup and are placed in dedusting
Fast interface in cylinder, is socketed in except the connecting pin of dirt cup on the outer wall of fast interface.
A kind of hole pumping and mining dust-extraction unit disclosed by the invention, bend pipe are connected by the dirt cup of removing of flange and orifice dust catcher
It connects.
A kind of hole pumping and mining dust-extraction unit disclosed by the invention, except the axis of dirt cup is overlapped with the axis of drilling drilling rod.
The invention also discloses a kind of application methods of hole pumping and mining dust-extraction unit, include the following steps:Drilling drilling rod is worn
Cross hole wall casing, hole wall casing and orifice dust catcher far from drill bit one end are tightly connected, orifice dust catcher by drainage tube with
Dedusting extraction case unicom, orifice dust catcher suck the dust of boring procedure, the geomantic omen at the drainage tube of dedusting extraction case one end
The high negative pressure that the Water jet stream dedusting ventilator that links generates will enter in the dust sucking dedusting extraction case of drainage tube, wind power ganged water
The water mist that jet fan sprays will be discharged after dust humidifying by the scum hole in dedusting extraction bottom portion, wind power ganged water-jet
It flows the negative pressure that dedusting fan generates to suck the methane gas in boring procedure in dedusting extraction case, opens top of the box and gas
The control valve of extraction system connection extracts methane gas out after the filtering of partition board.
Technical solution using the present invention, the dust for being generated drilling construction process by drainage tube and orifice dust catcher are inhaled
Enter in dedusting extraction case, the high negative pressure water mist that the wind power ganged Water jet stream dedusting ventilator being placed in dedusting extraction case drainage tube generates
It is discharged by scum hole by dust water body, then by the dust of water body;If encountered, gas amount in hole is big to there is spray orifice phenomenon
When, the wind power ganged Water jet stream dedusting ventilator of high negative pressure sucks methane gas in the babinet of dedusting extraction case, is removed by opening
Methane gas is pumped into extraction system by the control valve being connect with gas drainage system that the dirt extraction box top other side is equipped with;
The device reduces pollution of the dust to work site environments by dust removal installation, not only overcomes prior art drilling construction scene
The defect for being difficult to avoid that dust from flying is dusted using wind power ganged Water jet stream dedusting ventilator, meanwhile, avoid gas accident
Generation, ensure that the safety in production of concordant drilling site;The dust for pressing wind deslagging to generate in actual production process, uses the dress
It sets collection and concentrates depositing dust, realize that boring mud does not land, reduce the labor intensity of cleaning boring mud, dust removal efficiency is up to 99% or more;Concordant
The arrangement achieves the extraction when drilling, effective pre- gas prevention things for the larger drilling use of gas emission in drilling drilling process
Therefore generation, the device volume is small, and installation and removal are convenient, and processing cost is low, and equipment investment is avoided to increase production cost.
Below with reference to drawings and examples, the present invention is described in detail.
Description of the drawings
The content expressed by each width attached drawing of this specification and the label in figure are briefly described below:
Fig. 1 is a kind of schematic diagram of hole pumping and mining dust-extraction unit of the present invention.
In figure label for:1, dedusting extraction case;2, drill drilling rod;3, orifice dust catcher;4, hole wall casing;5, fast grafting
Mouthful;6, mud hole;7, wind power ganged Water jet stream dedusting ventilator;8, drainage tube;9, orifice sealing circle;10, air duct;11, it slags tap
Hole;12, feed pipe;13, partition board;14, control valve.
Specific implementation mode
Below against attached drawing, by the description of the embodiment, each structure for example involved to the specific implementation mode of the present invention
Mutual alignment and connection relation, the effect of each section and operation principle, manufacturing process between the shape of part, construction, each section
And operate with method etc., be described in further detail, with help those skilled in the art to the present invention inventive concept,
Technical solution has more complete, accurate and deep understanding.
Fig. 1 is a kind of schematic diagram of hole pumping and mining dust-extraction unit of the present invention;A kind of hole pumping and mining of the present invention as shown in the figure
Dust-extraction unit, including drilling drilling rod 2, drilling 2 outer wall of drilling rod are socketed with hole wall casing 4, wherein the hole wall set far from drill bit one end
Pipe 4 is tightly connected with orifice dust catcher 3, and orifice dust catcher 3 passes through drainage tube 8 and 1 unicom of dedusting extraction case;Orifice dust catcher 3
Including removing dirt cup, drilling drilling rod 2 is laterally pierced by along except dirt cup, wherein another except dirt cup one end and hole wall casing 4 are tightly connected
End and the gap location of drilling drilling rod 2 are equipped with orifice sealing circle, and except the top of dirt cup is equipped with bend pipe, bend pipe is connect with drainage tube, bottom
Portion is equipped with mud hole 6;Dedusting extraction case 1 is that bottom sets standoff babinet, and top side and the drainage tube 8 of middle case connect
It connects, is additionally provided with wind power ganged Water jet stream dedusting ventilator 7 with 8 junction of drainage tube, the other side of top of the box is equipped with takes out with gas
The control valve 14 of extraction system connection, the interior partition board 13 that isolation dust is equipped at control valve 14 of babinet, babinet is close to bottom one
The side wall of side is equipped with scum hole 11;Wind power ganged Water jet stream dedusting ventilator 7 is inserted vertically into babinet, wind power ganged water jet dedusting
The dust suction side of wind turbine 7 is tightly connected with drainage tube 8, and dust outlet side extends in babinet, wind power ganged water jet dedusting
The part that wind turbine 7 is placed in outside babinet is additionally provided with air duct 10 and feed pipe 12;Air duct 10 and the tube body that feed pipe 12 is threeway,
Outlet end is placed in the cylinder of wind power ganged Water jet stream dedusting ventilator 7;Drainage tube 8 is hose, and one end is removed with orifice dust catcher 3
Dirt cup is tightly connected, and the other end seals after being socketed the dust suction side of wind power ganged Water jet stream dedusting ventilator 7 with dedusting extraction case 1
Connection;Hole wall casing 4 is equipped with the connecting pin except dirt cup to be placed in except the fast interface 5 in dirt cup, except the connecting pin of dirt cup is socketed
On the outer wall of fast interface 5;Bend pipe is by flange with orifice dust catcher 3 except dirt cup is connect;Axis except dirt cup and drilling
The axis of drilling rod 2 overlaps.
The invention also discloses a kind of application methods of hole pumping and mining dust-extraction unit, include the following steps:Drilling drilling rod 2 is worn
Hole wall casing 4 is crossed, the hole wall casing 4 far from drill bit one end is tightly connected with orifice dust catcher 3, and orifice dust catcher 3 passes through extraction
Pipe 8 and 1 unicom of dedusting extraction case, orifice dust catcher 3 suck the dust of boring procedure, the drainage tube 8 of 1 one end of dedusting extraction case
The high negative pressure that the wind power ganged Water jet stream dedusting ventilator 7 at place generates will enter in the dust sucking dedusting extraction case 1 of drainage tube 8,
The water mist that wind power ganged Water jet stream dedusting ventilator 7 sprays will pass through 11 row of scum hole of 1 bottom of dedusting extraction case after dust humidifying
Going out, the negative pressure that wind power ganged Water jet stream dedusting ventilator 7 generates sucks the methane gas in boring procedure in dedusting extraction case 1,
The control valve 14 that top of the box is connect with gas drainage system is opened to extract methane gas after the filtering of partition board 13 out.
Technical solution using the present invention, the dust for being generated drilling construction process by drainage tube 8 and orifice dust catcher 3
It sucks in dedusting extraction case 1, the height that the wind power ganged Water jet stream dedusting ventilator 7 being placed in 1 drainage tube of dedusting extraction case generates is negative
Pressure water mist is discharged by dust water body, then by the dust of water body by scum hole 11;If encountering the big appearance of gas amount in hole
When spray orifice phenomenon, the wind power ganged Water jet stream dedusting ventilator 7 of high negative pressure sucks methane gas in the babinet of dedusting extraction case 1,
The control valve 14 being connect with gas drainage system being equipped with by opening the 1 top other side of dedusting extraction case, methane gas is taken out
Enter in extraction system;The device reduces pollution of the dust to work site environments by dust removal installation, not only overcomes existing skill
The wind power ganged Water jet stream dedusting ventilator of art drilling construction onsite application 7 is dusted the defect for being difficult to avoid that dust from flying, meanwhile,
The generation for avoiding gas accident ensure that the safety in production of concordant drilling site;Wind deslagging is pressed to generate in actual production process
Dust, using the device collect concentrate depositing dust, realize boring mud do not land, reduce cleaning boring mud labor intensity, dust removal efficiency
Up to 99% or more;The arrangement achieves taken out when drilling for the larger drilling use of gas emission in concordant drilling drilling process
It adopts, effectively prevents the generation of gas accident, the device volume is small, and installation and removal are convenient, and processing cost is low, avoids equipment investment
Increase production cost.
The present invention is exemplarily described above in conjunction with attached drawing, it is clear that the present invention implements not by aforesaid way
Limitation, as long as the improvement of the various unsubstantialities of inventive concept and technical scheme of the present invention progress is used, or without changing
Other occasions are directly applied to by the design of the present invention and technical solution, within protection scope of the present invention.
Claims (10)
1. a kind of hole pumping and mining dust-extraction unit, including drilling drilling rod, it is characterised in that:The drilling drilling-rod external wall is socketed with hole
Wall casing, wherein hole wall casing and orifice dust catcher far from drill bit one end are tightly connected, orifice dust catcher by drainage tube with
Dedusting extraction case unicom.
2. a kind of hole pumping and mining dust-extraction unit described in accordance with the claim 1, it is characterised in that:The orifice dust catcher includes
Except dirt cup, drilling drilling rod is laterally pierced by along except dirt cup, wherein except dirt cup one end is connect with hole wall bobbin seal, the other end and brill
The gap location of hole drilling rod is equipped with orifice sealing circle, and except the top of dirt cup is equipped with bend pipe, bend pipe is connect with drainage tube, and bottom is equipped with row
Cinder hole.
3. a kind of hole pumping and mining dust-extraction unit described in accordance with the claim 1, it is characterised in that:The dedusting extraction case is bottom
Portion sets standoff babinet, and the top side of middle case is connect with drainage tube, is additionally provided with drainage tube junction wind power ganged
Water jet stream dedusting ventilator, the other side of top of the box are equipped with the control valve being connect with gas drainage system, are located at control in babinet
The partition board of isolation dust is equipped at valve, babinet is equipped with scum hole close to the side wall of bottom side.
4. a kind of hole pumping and mining dust-extraction unit described in accordance with the claim 3, it is characterised in that:The wind power ganged water jet
Dedusting fan is inserted vertically into babinet, and dust suction side and the drainage tube of wind power ganged Water jet stream dedusting ventilator are tightly connected, powder
Dirt outlet side extends in babinet, and the part that wind power ganged Water jet stream dedusting ventilator is placed in outside babinet is additionally provided with air duct and water supply
Pipe.
5. a kind of hole pumping and mining dust-extraction unit according to claim 4, it is characterised in that:The air duct and feed pipe
For the tube body of threeway, outlet end is placed in the cylinder of wind power ganged Water jet stream dedusting ventilator.
6. a kind of hole pumping and mining dust-extraction unit described in accordance with the claim 1, it is characterised in that:The drainage tube is hose,
The dirt cup of removing of one end and orifice dust catcher is tightly connected, and the other end is socketed the dust suction side of wind power ganged Water jet stream dedusting ventilator
It is tightly connected afterwards with dedusting extraction case.
7. a kind of hole pumping and mining dust-extraction unit according to claim 2, it is characterised in that:The hole wall casing and dedusting
The connecting pin of cylinder is equipped with and is placed in except the fast interface in dirt cup, is socketed in except the connecting pin of dirt cup on the outer wall of fast interface.
8. a kind of hole pumping and mining dust-extraction unit according to claim 2, it is characterised in that:The bend pipe by flange with
The dirt cup of removing of orifice dust catcher connects.
9. a kind of hole pumping and mining dust-extraction unit according to claim 2, it is characterised in that:The described axis except dirt cup with
The axis of drilling drilling rod overlaps.
10. a kind of application method according to hole pumping and mining dust-extraction unit as described in any one of claim 1 to 9, feature exists
In:Include the following steps:The drilling rod that drills passes through hole wall casing, and the hole wall casing far from drill bit one end connects with orifice dust catcher sealing
It connects, orifice dust catcher is sucked the dust of boring procedure by drainage tube and dedusting extraction case unicom, orifice dust catcher, and dedusting is taken out
The high negative pressure that the wind power ganged Water jet stream dedusting ventilator at the drainage tube of case one end generates is adopted, the dust for entering drainage tube is sucked
In dedusting extraction case, the water mist that wind power ganged Water jet stream dedusting ventilator sprays will pass through dedusting extraction bottom portion after dust humidifying
Scum hole is discharged, and the methane gas in boring procedure is sucked dedusting extraction by the negative pressure that wind power ganged Water jet stream dedusting ventilator generates
In case, opens the control valve that top of the box is connect with gas drainage system and extract methane gas after the filtering of partition board out.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201810289424.2A CN108301799A (en) | 2018-04-03 | 2018-04-03 | A kind of hole pumping and mining dust-extraction unit and its application method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201810289424.2A CN108301799A (en) | 2018-04-03 | 2018-04-03 | A kind of hole pumping and mining dust-extraction unit and its application method |
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CN108301799A true CN108301799A (en) | 2018-07-20 |
Family
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CN201810289424.2A Pending CN108301799A (en) | 2018-04-03 | 2018-04-03 | A kind of hole pumping and mining dust-extraction unit and its application method |
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Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110029952A (en) * | 2019-05-29 | 2019-07-19 | 中国矿业大学(北京) | Cleaner for the drilling of soft rock tunnel country rock dry method |
CN110230478A (en) * | 2019-04-30 | 2019-09-13 | 中国一冶集团有限公司 | Armature boring depositing dust protective device |
CN110541728A (en) * | 2019-10-14 | 2019-12-06 | 中煤新集能源股份有限公司 | Air-water pumping linkage device for guaranteeing safe drilling construction |
CN110566142A (en) * | 2019-09-03 | 2019-12-13 | 辽宁省有色地质一〇一队有限责任公司 | Orifice dust collecting device |
CN110593786A (en) * | 2019-10-31 | 2019-12-20 | 攀钢集团矿业有限公司 | Wet dust removal system for down-the-hole drill |
CN111101882A (en) * | 2019-12-19 | 2020-05-05 | 微山金源煤矿 | Drilling cuttings collecting and dust removing device |
CN112554818A (en) * | 2020-12-01 | 2021-03-26 | 煤科集团沈阳研究院有限公司 | Device for removing dust and preventing gas from exceeding limit in underground construction drilling and using method |
CN114000914A (en) * | 2021-12-07 | 2022-02-01 | 安阳鑫龙煤业(集团)红岭煤业有限责任公司 | Coal mine gas extraction device |
CN114439393A (en) * | 2021-12-22 | 2022-05-06 | 山西天地王坡煤业有限公司 | Blowout prevention and dust drilling slag treatment system for pneumatic directional drilling of broken soft coal bed |
CN117552722A (en) * | 2024-01-12 | 2024-02-13 | 长治市潞安爆破工程有限公司 | Fixed-point drilling device for blasting operation |
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Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110230478A (en) * | 2019-04-30 | 2019-09-13 | 中国一冶集团有限公司 | Armature boring depositing dust protective device |
CN110029952A (en) * | 2019-05-29 | 2019-07-19 | 中国矿业大学(北京) | Cleaner for the drilling of soft rock tunnel country rock dry method |
CN110566142A (en) * | 2019-09-03 | 2019-12-13 | 辽宁省有色地质一〇一队有限责任公司 | Orifice dust collecting device |
CN110566142B (en) * | 2019-09-03 | 2024-05-03 | 辽宁省有色地质一〇一队有限责任公司 | Orifice dust collecting device |
CN110541728B (en) * | 2019-10-14 | 2024-03-15 | 中煤新集能源股份有限公司 | Wind-water pumping linkage device for guaranteeing safe construction of drilling |
CN110541728A (en) * | 2019-10-14 | 2019-12-06 | 中煤新集能源股份有限公司 | Air-water pumping linkage device for guaranteeing safe drilling construction |
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Application publication date: 20180720 |