CN106869834A - A kind of coal bed drilling drilling hole dust collector device - Google Patents

A kind of coal bed drilling drilling hole dust collector device Download PDF

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Publication number
CN106869834A
CN106869834A CN201510913131.3A CN201510913131A CN106869834A CN 106869834 A CN106869834 A CN 106869834A CN 201510913131 A CN201510913131 A CN 201510913131A CN 106869834 A CN106869834 A CN 106869834A
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CN
China
Prior art keywords
drilling
dust
coal bed
collector device
dust collector
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Pending
Application number
CN201510913131.3A
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Chinese (zh)
Inventor
姚秋丽
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Individual
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Individual
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Priority to CN201510913131.3A priority Critical patent/CN106869834A/en
Publication of CN106869834A publication Critical patent/CN106869834A/en
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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B21/00Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/01Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
    • E21B21/015Means engaging the bore entrance, e.g. hoods for collecting dust
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04FPUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/02Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid
    • F04F5/04Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid displacing elastic fluids

Abstract

A kind of coal bed drilling drilling hole dust collector device, is mainly made up of Water-jet dust remover, aperture dust collect plant and connecting line etc..The dust produced in firedamp taking-out discharging drilling work progress is under pressure wind effect, discharged from hole of the bottom hole with high speed between drilling rod and rib, into aperture dust collect plant, the dust of wherein larger particles settles down under gravity, is entered in cinder collecting vessel through lower tapping hole.Meanwhile, pressure water stream is sprayed by the nozzle of Water-jet dust remover, forms high-speed jet, induction chamber pressure is set to reduce to form negative pressure of vacuum, the coal dust of smaller particle in dust collect plant is pumped to suction chamber, and after mixing in trunnion entrance and trunnion with current, ditch is expelled to through anemostat outlet.Coal bed drilling drilling hole dust collector device directly can be worked using underground water supply inner pipe water pressure, thus energy consumption is small;Simple structure, small volume, convenient disassembly, small, good dedusting effect is influenceed on drilling construction.

Description

A kind of coal bed drilling drilling hole dust collector device
Technical field
The present invention relates to a kind of coal bed drilling drilling hole dust collector device.
Background technology
Gas suction by drilling is one of most effectual way of preventing and treating coal and gas prominent accident, and with the increase of coal and gas prominent seam mining depth and mining rate, Intensity of coal-gas burst is increasing, so that the quantity of firedamp taking-out discharging drilling is sharply increased.According to wet boring, the failures such as the hole that collapses, plug-hole, bit freezing are easily caused, have a strong impact on gas drainage results.Therefore, gas discharge in mine drilling construction mainly use the pneumatic deslagging of dry drilling, but its produce a large amount of dust, bring hidden danger to mine safety production and personnel health.The coal dust produced during dry drilling can individually explode in the presence of completely no gas, small-scale gas explosion is converted into the mixed explosion of gas and coal dust, cause continuous blast;Meanwhile, coal dust also causes serious harm to the healthy of miner, both at home and abroad because the miner that pneumoconiosis causes disable it is very surprising with death toll;In addition, dust concentration crosses conference influence vision, workmen's operational error is caused.
At present, mainly there are spray for dust suppression, foam dust-removing and deduster dedusting etc. in colliery for depositing dust, dust suppression that dry drilling is taken, but there is problems with implementation process:The efficiency of dust collection of spray dust remover increases and improves with pressure of supply water, and bring that energy consumption is big, device parts easy break-down, short life problem compared with hydraulic pressure high, and nozzle diameter size is larger to dust catching influential effect, and diameter is too small easily causes blocking, foam dust-removing is higher to foam compound formula and adding proportion requirement, and operating procedure is numerous and diverse;Deduster volume is big, required pump pressure is high, energy consumption is big, underground migration inconvenience.These problems limit its range of application to a certain extent.Therefore, 70%~80% coal bed drilling job site is sprayed and the simple device for reducing dust such as dust-break water curtain using only aperture, and drilling construction place coal dust flies upward, and the mean dust concentration in its return is up to more than 350mg/m3, far beyond《Safety regulations in coal mine》Regulation.
The content of the invention
To solve the dust pollution question that dry drilling is produced, the present invention devises a kind of coal bed drilling drilling hole dust collector device.
The technical solution adopted for the present invention to solve the technical problems is:Coal bed drilling drilling hole dust collector device is mainly made up of Water-jet dust remover, aperture dust collect plant and connecting line etc..
The operation principle of coal bed drilling drilling hole dust collector device is:The dust produced in firedamp taking-out discharging drilling work progress is under pressure wind effect, discharged from hole of the bottom hole with high speed between drilling rod and rib, into aperture dust collect plant, the dust of wherein larger particles settles down under gravity, is entered in cinder collecting vessel through lower tapping hole.Simultaneously, pressure water stream is sprayed by the nozzle 8 of Water-jet dust remover, form high-speed jet, induction chamber pressure is set to reduce to form negative pressure of vacuum, the coal dust of smaller particle in dust collect plant is pumped to suction chamber, and after mixing in trunnion entrance and trunnion with current, ditch to ditch is expelled to through anemostat outlet.
The Water-jet dust remover mainly by nozzle, suction chamber, trunnion, anemostat and takes out the structure compositions such as dirt pipe, and the concentricity of nozzle, trunnion and anemostat is ensured in general assembly.The nozzle mainly has angle of throat α, outlet diameter d using taper contracting noz(zle), its geometric parameter1And cylindrical section l.Angle of throat α chooses maximum stream flow coefficient value corresponding 13.5.
Q0It is working flow volume flow, m3/s;μ is discharge coefficient, takes 0.95;G is acceleration of gravity, m/s2;Δp0It is operating pressure, Pa;γ is working flow unit weight, kN/m3.The trunnion is the part that working flow is mixed with the dusty gas of suction, using the short trunnion of single-stage.
d1It is nozzle outlet diameter, mm;ε is constriction coefficient, when angle of throat α=13.5 °, ε ≈ 1;My is optimal area ratio, according to h=Δs pc/Δp0, using my=f (h) curves are tried to achieve, Δ pcIt is outlet pressure, Pa.The monkey mouth is away from LcI.e. jet expansion section to trunnion inlet section distance, in (0.5~2) d1In the range of choose.The anemostat uses uniform angle of flare, L longdCan be by (4~7) (dc- d2) chosen.
The dust Control that the aperture dust collect plant is produced when firedamp taking-out discharging drilling is constructed is in relatively closed space, due to taking out dirt using negative pressure, so dust collect plant need not be higher seal request, it is main consider with rig be reliably connected and process spray orifice, stick of tool when can conveniently dismounting or opening.
The beneficial effects of the invention are as follows:Coal bed drilling drilling hole dust collector device directly can be worked using underground water supply inner pipe water pressure, thus energy consumption is small;Simple structure, small volume, convenient disassembly, small, good dedusting effect is influenceed on drilling construction.
Brief description of the drawings
The present invention is further described below in conjunction with the accompanying drawings.
Fig. 1 is dust arrester structure composition and connection figure.
Fig. 2 is Water-jet dust remover structural representation.
Fig. 3 is aperture dust collect plant structure chart.
In figure, 1- Water-jet dust removers, 2- takes out dirt pipe, 3- apertures dust collect plant, 4- cinders mobile phone bucket, 5- sweep-up pipes, 6- suction chambers, 7- nozzles, 8- trunnions, 9- anemostats, 10- dust gathering arresters, 11- dust seal devices, 12- lower tapping holes;A water receiving pipes, B to gutter, C connects and takes out dirt pipe.
Specific embodiment
In Fig. 1, coal bed drilling drilling hole dust collector device is mainly made up of Water-jet dust remover 1, aperture dust collect plant 3 and connecting line etc..The dust produced in firedamp taking-out discharging drilling work progress is under pressure wind effect, discharged from hole of the bottom hole with high speed between drilling rod and rib, into aperture dust collect plant 3, the dust of wherein larger particles settles down under gravity, is entered in cinder collecting vessel through lower tapping hole.Simultaneously, pressure water stream is sprayed by the nozzle 7 of Water-jet dust remover 1, form high-speed jet, induction chamber pressure is set to reduce to form negative pressure of vacuum, the coal dust of smaller particle in dust collect plant is pumped to suction chamber 6, and after mixing in the entrance of trunnion 8 and trunnion 8 with current, ditch to ditch is expelled to through anemostat outlet.
In fig. 2, the Water-jet dust remover 1 mainly by nozzle 7, suction chamber 6, trunnion 8, anemostat 9 and takes out the structure compositions such as dirt pipe 2, and the concentricity of nozzle 7, trunnion 8 and anemostat 9 is ensured in general assembly.The nozzle 7 uses taper contracting noz(zle), the trunnion 8 to use the short trunnion of single-stage, the anemostat 9 to use uniform angle of flare.
In figure 3, the dust Control that aperture dust collect plant 3 is produced when firedamp taking-out discharging drilling is constructed is in relatively closed space, due to taking out dirt using negative pressure, so dust collect plant need not be higher seal request, it is main consider with rig be reliably connected and process spray orifice, stick of tool when can conveniently dismounting or opening.

Claims (6)

1. a kind of coal bed drilling drilling hole dust collector device, it is characterized in that:Mainly it is made up of Water-jet dust remover, aperture dust collect plant and connecting line etc..
2. coal bed drilling drilling hole dust collector device according to claim 1, it is characterized in that the Water-jet dust remover is main by nozzle, suction chamber, trunnion, anemostat and to take out the structure compositions such as dirt pipe.
3. coal bed drilling drilling hole dust collector device according to claim 2, it is characterized in that the nozzle uses taper contracting noz(zle).
4. coal bed drilling drilling hole dust collector device according to claim 2, it is characterized in that the monkey mouth is away from LcI.e. jet expansion section to trunnion inlet section distance, in (0.5~2) d1In the range of choose.
5. coal bed drilling drilling hole dust collector device according to claim 2, it is characterized in that the anemostat uses uniform angle of flare, L longdCan be by (4~7) (dc- d2) chosen.
6. coal bed drilling drilling hole dust collector device according to claim 1, it is characterized in that the dust Control that the aperture dust collect plant is produced when firedamp taking-out discharging drilling is constructed is in relatively closed space.
CN201510913131.3A 2015-12-11 2015-12-11 A kind of coal bed drilling drilling hole dust collector device Pending CN106869834A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510913131.3A CN106869834A (en) 2015-12-11 2015-12-11 A kind of coal bed drilling drilling hole dust collector device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510913131.3A CN106869834A (en) 2015-12-11 2015-12-11 A kind of coal bed drilling drilling hole dust collector device

Publications (1)

Publication Number Publication Date
CN106869834A true CN106869834A (en) 2017-06-20

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CN201510913131.3A Pending CN106869834A (en) 2015-12-11 2015-12-11 A kind of coal bed drilling drilling hole dust collector device

Country Status (1)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107605528A (en) * 2017-09-30 2018-01-19 阳泉煤业(集团)有限责任公司 A kind of boring method for suppressing driving face dust
CN108868671A (en) * 2018-08-24 2018-11-23 宿州金地工贸有限责任公司 A kind of fortune envelope pumping integration dust-removing device for wind power slag-discharging drilling machine
CN109505543A (en) * 2018-12-29 2019-03-22 徐州吉安矿业科技有限公司 Wet-type drill way dust collector based on aerodynamic
CN109779561A (en) * 2019-03-12 2019-05-21 辽宁工程技术大学 A kind of coal mine down-hole drilling blowout prevention dust-extraction unit
CN111101882A (en) * 2019-12-19 2020-05-05 微山金源煤矿 Drilling cuttings collecting and dust removing device
CN113685150A (en) * 2021-09-30 2021-11-23 太原理工大学 Dust removal device for underground orifice
CN116950707A (en) * 2023-08-10 2023-10-27 安徽理工大学 Portable coal mine support drilling dust control and removal device and dust removal method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107605528A (en) * 2017-09-30 2018-01-19 阳泉煤业(集团)有限责任公司 A kind of boring method for suppressing driving face dust
CN108868671A (en) * 2018-08-24 2018-11-23 宿州金地工贸有限责任公司 A kind of fortune envelope pumping integration dust-removing device for wind power slag-discharging drilling machine
CN109505543A (en) * 2018-12-29 2019-03-22 徐州吉安矿业科技有限公司 Wet-type drill way dust collector based on aerodynamic
CN109779561A (en) * 2019-03-12 2019-05-21 辽宁工程技术大学 A kind of coal mine down-hole drilling blowout prevention dust-extraction unit
CN109779561B (en) * 2019-03-12 2023-12-26 辽宁工程技术大学 Colliery is drilling in pit prevents spouting dust collector
CN111101882A (en) * 2019-12-19 2020-05-05 微山金源煤矿 Drilling cuttings collecting and dust removing device
CN113685150A (en) * 2021-09-30 2021-11-23 太原理工大学 Dust removal device for underground orifice
CN116950707A (en) * 2023-08-10 2023-10-27 安徽理工大学 Portable coal mine support drilling dust control and removal device and dust removal method

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Application publication date: 20170620