CN104453979B - The remodeling method of underground coal mine negative pressure-pumping dust collecting process - Google Patents
The remodeling method of underground coal mine negative pressure-pumping dust collecting process Download PDFInfo
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- CN104453979B CN104453979B CN201410632784.XA CN201410632784A CN104453979B CN 104453979 B CN104453979 B CN 104453979B CN 201410632784 A CN201410632784 A CN 201410632784A CN 104453979 B CN104453979 B CN 104453979B
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- 239000000428 dust Substances 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000003245 coal Substances 0.000 title claims abstract description 19
- 230000008569 process Effects 0.000 title claims abstract description 17
- 238000005086 pumping Methods 0.000 title claims abstract description 13
- 238000007634 remodeling Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 108
- -1 dirt Substances 0.000 claims abstract description 10
- 238000010521 absorption reaction Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 230000009466 transformation Effects 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000000717 retained effect Effects 0.000 claims description 3
- 239000010865 sewage Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 12
- 230000008901 benefit Effects 0.000 abstract description 5
- 239000003595 mist Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 26
- 239000002817 coal dust Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 239000008346 aqueous phase Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 241000469816 Varus Species 0.000 description 1
- 230000001914 calming effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 206010035653 pneumoconiosis Diseases 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- 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
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/20—Drawing-off or depositing dust
-
- 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
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/02—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Prevention Of Fouling (AREA)
Abstract
The present invention relates to the remodeling method of a kind of underground coal mine negative pressure-pumping dust collecting process, the remodeling method of this underground coal mine negative pressure-pumping dust collecting process installs horn mouth, high-pressure water jet pump and high-pressure gas jet pump before the air inlet of axial flow blower additional, and the air outlet at axial flow blower installs water film dedusting cylinder additional；It is sufficiently mixed water, dirt, mist by high-pressure water jet pump, high pressure gas jet flow pump and axial flow blower, is then separated by water film dedusting cylinder.The remodeling method of underground coal mine negative pressure-pumping dust collecting process of the present invention has small investment, instant effect, dust removing effects clear advantage, is suitable for working in driving face of coal mine dedusting.
Description
Technical field
The present invention relates to the remodeling method of a kind of underground coal mine negative pressure-pumping dust collecting process.
Background technology
Mine dust is produced Ore and the subparticle of rock during mining production.Coal dust is mine dust
One, reach 45～2000g/m3 when having volatile Dust Concentration, meet 700～800 DEG C of high temperature
Can explode during burning things which may cause a fire disaster, and produce substantial amounts of toxic and harmful (such as CO), even can also cause
Gas explosion and mine fire, additionally mine dust also can make the worker of Long Term Contact mine dust suffer from pneumoconiosis.
According to country's relevant policies requirement to coal mine operation environment, coal mining enterprise carries out the most comprehensively
The control of mine dust, with guarantee enterprise safety in production and improve economy, society, environment,
Safety benefit.The treating flour dust technology used at present includes wind, water, close, clean and 5 aspects such as protect,
And based on wind, water.Wind is exactly dust removal by ventilation；Water is exactly wet operation；Close refer to airtight take out heavy；
Only it is that purification is distinguished and admirable；Protect is to take individual protection measure.Wet operation includes coal-bed flooding, in coal machine
External spraying, spraying and transfer point spraying etc. between frame, its mechanism of reducing dust by spray combines drift nothing more than water smoke
Floating aerial dust particle so that it is gravity increases and Accelerated subsidence.Its dust reduction rate can only achieve 60%
Left and right, lower to the dust-laying effect of respirable dust, only up to the dust reduction rate of 28%, its reason is
Owing to coal, rock dust have a certain degree of hydrophobicity.Existing Wet-type dust-removal fan uses electronic mode,
Volume is big, noise is big, auxiliary device is many, complex process, and Water jet stream dedusting ventilator etc. adopts dedusting air quantity
Little, weak effect, it is necessary to transform.
Summary of the invention
The technical problem to be solved in the present invention is the drawbacks described above how overcoming prior art, it is provided that a kind of
The remodeling method of underground coal mine negative pressure-pumping dust collecting process.
For solve above-mentioned technical problem, the remodeling method of this underground coal mine negative pressure-pumping dust collecting process include as
Lower step:
One). scrap build
1) air inlet at axial flow blower installs horn mouth additional, sets up to put multiple be uniformly distributed height in horn mouth
Pressure water jet pump and multiple high-pressure gas jet pump that is uniformly distributed, and high-pressure gas jet pump is positioned at high pressure
Between water fluidic pump and axial flow blower, the air outlet at axial flow blower installs water film dedusting cylinder, described water additional
Film dedusting cylinder includes urceolus and inner core, and wherein inner core is made up of with being wrapped on cage flexible knitmesh cage,
Urceolus downstream is connected with ring sealing plate, and urceolus bottom is provided with a blowdown pipeline；
2) high-pressure water pipe communicated at high-pressure water installs water valve additional, then high-pressure water pipe is introduced horn mouth,
High-pressure water pipe separates multiple arm, and each arm all water spouts with corresponding high-pressure water jet pump communicate；
The high-pressure air pipe communicated in high-pressure air source installs air valve additional, and then high-pressure air pipe introduces horn mouth, high pressure
Trachea separates multiple arm, and each arm all air nozzles with corresponding high pressure gas jet flow pump communicate；
Two). technological transformation
3). opening axial flow blower, water valve and air valve successively, part contains dusty gas by high-pressure water jet
The vacuum suction that pump produces, enters horn mouth, meets with water under high pressure, and water, dirt, gas tentatively mix,
Form High water cut air-flow；
Above-mentioned High water cut air-flow is produced vacuum suction by high pressure gas jet flow pump, with high pressure gas jet flow pump self
Suck meets containing dusty gas, and water, dirt, gas mix further, is formed containing water flow；
Above-mentioned produced vacuum suction containing water flow by axial flow blower, with axial flow blower self suck containing powder
Dust and gas body meets, and water, dirt, gas are thoroughly mixed to form fog stream, and fog stream major part dust is by fog
Little water droplet absorption in stream, only small part dust trip stream；
4) after axial flow blower, major part fog stream enters between the inside and outside cylinder of water film dedusting cylinder,
Enter the water droplet in the fog stream between inside and outside cylinder in flexible knitmesh, stop formation moisture film, will simultaneously
The free dust of this part fog stream is retained down, and only holds the air permeable moisture film of cleaning, enters inner core,
Fraction fog stream is directly entered in inner core, and free dust and little water droplet roll in inner core, touch
Hit, after part free dust encounters little water droplet or little aqueous phase knock against each other, form bigger water droplet, fall
On inner core moisture film；Part free dust and little water droplet are directly adsorbed by moisture film, the sewage of absorption on moisture film
More and more heavier, finally through inner core, discharge through blowdown pipeline,
Clean gas after two parts fog stream dedusting, finally discharges from inner core exports.
Being so designed that, taking full advantage of the sufficient high-pressure air source in down-hole, high-pressure water, equipment is changed not
Greatly, investing the highest, air circulating resistance increases little, but dust removing effects is obvious.
As optimization, between the inside and outside cylinder of water film dedusting cylinder, it is additionally provided with spiral deflector, spiral stream guidance
Plate and urceolus lower inner wall joint are provided with draining breach.Being so designed that, dust removing effects is more preferable.
As optimization, in the inner core of water film dedusting cylinder, it is additionally provided with spiral deflector.It is so designed that, dedusting
Effect is more preferable, but air circulating resistance is amid a sharp increase.
The remodeling method of underground coal mine negative pressure-pumping dust collecting process of the present invention have the advantage that small investment,
Instant effect, dust removing effects clear advantage, it is suitable for working in driving face of coal mine dedusting.
1. principle is unique: the present invention can be overlapped combination according to the dust removal requirement of different work point, due to
It has powerful air-flow expanded function, not only substantially increases and processes the air quantity that dust-laden is distinguished and admirable, the biggest
Reducing greatly energy consumption, the energy consumption of processed in units air quantity is about the 30% of like product, has saved cost.
2. efficiency of dust collection is high, applied widely: use the present invention to carry out dedusting dehydration, the little (work of working resistance
Make resistance 800Pa), efficiency high, when actual measurement dust concentration reaches 28000mg/m3, remain to normally work
Do not block.
3. simple in construction: the present invention and combine and adopt development machine and support the use, connected mode is simple, and moisture film
Dedusting cylinder has self-cleaning function, energy long continuous operation, clean and maintenance simple and fast, uses very
Convenient.
4. the present invention only increases pressure-air on the basis of primitive axis flow fan and water under high pressure does power, it is not necessary to
Electricity consumption, noiselessness, movement-less part, purely mechanic structure, plug and play, move light, overcome
The shortcomings such as wet type electrical dust-removing blower fan volume is big, noise is big, auxiliary device is many, heavy difficulty is mobile, with
Time also overcome the mechanical type dedusting fan such as the most existing such as Water jet stream dedusting ventilator and process air quantity
The defects such as little, dust removing effects is poor.
5. present invention process is simple, and system is reliable, and its dedusting fan volume is little, lightweight, moves and moves conveniently,
Plug and play, temperature humidity and dust concentration to environment have no special requirements.
6. the present invention is applicable to gun diging face dedusting, shotcrete setting dedusting, fully mechanized workface dedusting etc.,
It is particularly well-suited to the mine dedusting that highly gassy mine, Gas Outburst mine and explosive index of coal dust are high.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings the remodeling method of this underground coal mine negative pressure-pumping dust collecting process is made furtherly
Bright:
Fig. 1 is the scrap build of the embodiment of the remodeling method of this underground coal mine negative pressure-pumping dust collecting process
Schematic diagram.
In figure: 1 be axial flow blower, 2 be horn mouth, 3 be high-pressure water jet pump, 4 for gases at high pressure
Jet pump, 5 be water film dedusting cylinder, 51 for urceolus, 52 for inner core, 53 for ring sealing plate, 6 for row
Dirty pipeline, 7 be high-pressure water pipe, 8 be water valve, 9 be high-pressure air pipe, 10 be air valve, 11 lead for spiral
Stream plate, 12 be draining breach, 13 be water stop, 14 be high-pressure air feed station, 15 be air duct, 16 be
Booster, 17 be Mine Dust, 18 for development end.
Detailed description of the invention
Embodiment 1: as it is shown in figure 1, the remodeling method of underground coal mine negative pressure-pumping dust collecting process, including
Following steps:
One). scrap build
1) air inlet at axial flow blower 1 installs horn mouth 2 additional, set up in horn mouth 2 put multiple uniformly
Distribution high-pressure water jet pump 3 and multiple high-pressure gas jet pump 4 that is uniformly distributed, and high-pressure gas jet pump
4 between high-pressure water jet pump 3 and axial flow blower 1, and the air outlet at axial flow blower 1 installs moisture film additional
Dedusting cylinder 5, described water film dedusting cylinder 5 includes urceolus 51 and inner core 52, and wherein inner core 52 is by cage
Constituting with being wrapped on cage flexible knitmesh, urceolus 51 downstream is connected with ring sealing plate 53, urceolus bottom
It is provided with a blowdown pipeline 6；
2) in the high-pressure water pipe 7 that high-pressure water communicates, install water valve 8 additional, then high-pressure water pipe 7 is drawn
Entering horn mouth 2, high-pressure water pipe 7 separates multiple arm, each arm all with corresponding high-pressure water jet pump
The water spout of 3 communicates；The high-pressure air pipe 9 that high-pressure air source communicates installs air valve 10 additional, then by height
Air pipe 9 introduces horn mouth 2, and high-pressure air pipe 9 separates multiple arm, each arm all with corresponding height
The air nozzle of jet pump 4 of calming the anger communicates；
Being additionally provided with spiral deflector 11 between the urceolus 51 of water film dedusting cylinder 5, inner core 52, spiral is led
Stream plate 11 is provided with draining breach 12 with urceolus 51 lower inner wall joint.
Note: also can set up spiral deflector if desired in the inner core of water film dedusting cylinder, figure is slightly.
Two). technological transformation
3). opening axial flow blower 1, water valve 8 and air valve 10 successively, part contains dusty gas by high pressure
The vacuum suction that water fluidic pump 3 produces, enters horn mouth 2, meets with water under high pressure, at the beginning of water, dirt, gas
Step mixing, forms High water cut air-flow；
The vacuum suction that above-mentioned High water cut air-flow is produced by high pressure gas jet flow pump 4, with high pressure gas jet flow pump 4
What self sucked meets containing dusty gas, and water, dirt, gas mix further, is formed containing water flow；
Above-mentioned produced vacuum suction containing water flow by axial flow blower 1, suck with axial flow blower 1 self
Meeting containing dusty gas, water, dirt, gas are thoroughly mixed to form fog stream, and major part dust is by fog stream
In little water droplet absorption, only small part dust trip stream；
4) after axial flow blower 1, major part fog stream enters the urceolus 51 of water film dedusting cylinder, inner core
Between 52, enter the water droplet in fog stream therebetween in flexible knitmesh, stop formation moisture film, with
Time the free dust of this part fog stream is retained down, only hold cleaning air permeable moisture film, enter
Inner core 52,
Fraction fog stream is directly entered in inner core 52, and free dust and little water droplet are in inner core 52 varus
Rolling, collision, after part free dust encounters little water droplet or little aqueous phase knock against each other, form bigger water droplet,
Fall on inner core 52 moisture film；Part free dust and little water droplet are directly adsorbed by moisture film, and moisture film adsorbs
Sewage more and more heavier, finally through inner core 52, discharge through blowdown pipeline 6,
Clean gas after two parts fog stream dedusting, finally discharges from inner core 52 exports.
The dust concentration of certain mine development ends reaches 1000～3000mg/m3, and explosive index of coal dust exists
Between 36.28%～46.85%, having the strongest explosivity, the production safety of mine in serious threat,
Threat worker's is healthy.Using traditional dust suppression not reach preferable effect, its dust is dense
Down-hole, higher than state specified standards 10mg/m3, is commonly used axial flow blower and is changed according to of the present invention by degree
Use after making method transformation, and four dust measuring points are set, be 1. near dirt source respectively；2. dedusting fan
Distinguished and admirable import department；3. the dedusting fan distinguished and admirable exit 3m 4. dedusting fan outlet the most distinguished and the most admirable mixing of 5-10m
Place.Dust concentration direct-reading instrument is utilized to measure the dust concentration of four measuring points before and after dedusting fan is opened respectively,
Calculating the efficiency of dust collection of dedusting fan, according to actual test result, the efficiency of dust collection of this technique reaches
About 95%, dust-laying effect is obvious.
Claims (1)
1. a remodeling method for underground coal mine negative pressure-pumping dust collecting process, comprises the steps:
One). scrap build
1) air inlet at axial flow blower installs horn mouth additional, set up in horn mouth to put and multiple are uniformly distributed high-pressure water jet pump and multiple are uniformly distributed high-pressure gas jet pump, and high-pressure gas jet pump is between high-pressure water jet pump and axial flow blower, air outlet at axial flow blower installs water film dedusting cylinder additional, described water film dedusting cylinder includes urceolus and inner core, wherein inner core is made up of with being wrapped on cage flexible knitmesh cage, and urceolus downstream is connected with ring sealing plate, and urceolus bottom is provided with a blowdown pipeline；
2) high-pressure water pipe communicated at high-pressure water installs water valve additional, and then high-pressure water pipe introduces horn mouth, and high-pressure water pipe separates multiple arm, and each arm all water spouts with corresponding high-pressure water jet pump communicate；The high-pressure air pipe communicated in high-pressure air source installs air valve additional, and then high-pressure air pipe introduces horn mouth, and high-pressure air pipe separates multiple arm, and each arm all air nozzles with corresponding high pressure gas jet flow pump communicate；
Two). technological transformation
3) axial flow blower, water valve and air valve are opened successively, the vacuum suction that part is produced by high-pressure water jet pump containing dusty gas, enter horn mouth, meet with water under high pressure, water, dirt, gas tentatively mix, and form High water cut air-flow；
Above-mentioned High water cut air-flow is produced vacuum suction by high pressure gas jet flow pump, meets containing dusty gas with what high pressure gas jet flow pump self sucked, and water, dirt, gas mix further, is formed containing water flow；
Above-mentioned being produced vacuum suction containing water flow by axial flow blower, meet containing dusty gas with what axial flow blower self sucked, water, dirt, gas are thoroughly mixed to form fog stream, and fog stream major part dust is adsorbed by the little water droplet in fog stream, only small part dust trip stream；
4) after axial flow blower, major part fog stream enters between the inside and outside cylinder of water film dedusting cylinder, enter the water droplet in the fog stream between inside and outside cylinder in flexible knitmesh, stop formation moisture film, the free dust of this part fog stream is retained down simultaneously, only hold the air permeable moisture film of cleaning, enter inner core, fraction fog stream is directly entered in inner core, free dust and little water droplet roll in inner core, collide, after part free dust encounters little water droplet or little water droplet phase knock against each other, form bigger water droplet, fall on inner core moisture film；Part free dust and little water droplet are directly adsorbed by moisture film, on moisture film, the sewage of absorption is more and more heavier, finally through inner core, discharge through blowdown pipeline, clean gas after two parts fog stream dedusting, finally discharges from inner core exports, is additionally provided with spiral deflector between the inside and outside cylinder of water film dedusting cylinder, spiral deflector and urceolus lower inner wall joint are provided with draining breach, are additionally provided with spiral deflector in the inner core of water film dedusting cylinder.
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| CN201410632784.XA CN104453979B (en) | 2014-11-11 | 2014-11-11 | The remodeling method of underground coal mine negative pressure-pumping dust collecting process |
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| CN201410632784.XA CN104453979B (en) | 2014-11-11 | 2014-11-11 | The remodeling method of underground coal mine negative pressure-pumping dust collecting process |
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| CN106560593B (en) * | 2015-09-25 | 2018-09-28 | 陈业武 | A kind of mine down-hole negative pressure superposition geomantic omen flow type pump with injection dedusting fan |
| CN105317453B (en) * | 2015-11-16 | 2017-07-11 | 中国矿业大学 | The dust collection method that spoil is crushed in a kind of underground coal mine chamber |
| CN105709533A (en) * | 2016-04-20 | 2016-06-29 | 枣庄矿业（集团）有限责任公司柴里煤矿 | Coal-caving wind-hydraulic linked dedusting device |
| CN108211757A (en) * | 2018-03-19 | 2018-06-29 | 西安科技大学 | A kind of mining negative-pressure ejecting formula hydrogen sulphide disposal unit and processing method |
| CN110295913B (en) * | 2019-08-05 | 2024-05-07 | 中信国安建工集团有限公司 | Tunnel blasting excavation system and construction method |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| SU542825A1 (en) * | 1975-02-10 | 1977-01-15 | Институт Геотехнической Механики Ан Украинской Сср | Drilling dust collecting device |
| CN87204978U (en) * | 1987-03-24 | 1987-10-14 | 淮南矿务局潘集第一煤矿 | Water jet stream dedusting ventilator |
| CN2037405U (en) * | 1988-10-19 | 1989-05-10 | 新疆煤炭专科学校 | Special purpose combined axial fan for small mine |
| JP3128077B2 (en) * | 1991-08-01 | 2001-01-29 | キヤノン株式会社 | Method for manufacturing bipolar transistor and method for manufacturing semiconductor device using the same |
| DE4218851A1 (en) * | 1992-06-09 | 1993-12-16 | Paul Dr Ing Schmidt | Cyclone with screw baffle - promoting spiral gas flow to increase centrifugal sepn. forces and improve dust removal at low concn. and low average particle sizes |
| CN101598134A (en) * | 2009-07-11 | 2009-12-09 | 邯郸市东方风机制造有限公司 | A kind of whirlwind moisture film wet dust removal axial-flow blower |
| CN201574773U (en) * | 2009-11-30 | 2010-09-08 | 河南中煤矿业科技发展有限公司 | Multifunctional water-jet dedusting device |
| CN202081905U (en) * | 2011-04-21 | 2011-12-21 | 湖南科技大学 | Mine wet-type multi-channel axial spiral centrifugal dust removing fan |
| CN103726868B (en) * | 2014-01-27 | 2016-07-06 | 湖南科技大学 | Have driven swirl channel dust-removing blower for mine and driven swirl channel method for designing thereof |
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