CN103790618A - Mine water bath type orifice blowout prevention and dust removal device - Google Patents
Mine water bath type orifice blowout prevention and dust removal device Download PDFInfo
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- CN103790618A CN103790618A CN201410077160.6A CN201410077160A CN103790618A CN 103790618 A CN103790618 A CN 103790618A CN 201410077160 A CN201410077160 A CN 201410077160A CN 103790618 A CN103790618 A CN 103790618A
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Abstract
A mine water bath type orifice blowout prevention and dust removal device comprises a dust collection box, a skeleton flexible pipe, a water bath type dust removal box, a high-pressure rubber pipe and the like. The mine water bath type orifice blowout prevention and dust removal device is suitable for being used during dry-type drilling gas drainage drilling in a coal and gas outburst coal seam or a soft coal seam or a coal seam containing hydrogen sulfide and carbon dioxide. Air flow blown or sprayed out of an orifice is collected by the dust collection box under the action of air exhaust negative pressure provided by a gas extraction system and then pumped into the water bath type dust removal box through the skeleton flexible pipe, dust, hydrogen sulfide and carbon dioxide contained in the air flow are sedimented or absorbed after the air flow is purified by a solution added with a dust removal agent, the purified air flow containing gas enters a water collection device, and finally the air flow is pumped into a gas extraction pipeline. The mine water bath type orifice blowout prevention and dust removal device is simple in structure and working principle, does not need electric power, and is good in anti-explosion performance and sealing performance, safe, reliable, small in noise, moderate in size, convenient to operate and transport, high in practicability, capable of conducting series connection operation, capable of adjusting air pumping amount according to the air outflow amount of the orifice, and ideal in orifice blowout prevention and dust removal effect.
Description
Technical field
The present invention relates to a kind of mining water-bath type orifice blowout prevention and dust arrester, be suitable for when gas discharge in mine boring dry type is crept into using, the coal seam dry type that is particularly useful for coal and Coal Seam Prone To Outburst, soft seam or sulfide hydrogen, carbon dioxide is used while creeping into firedamp taking-out discharging drilling.
Background technology
Along with the development of national economy, to Coal Energy Source total amount consume day by day and to increase, the dynamics of coal mining also strengthens thereupon, easily reduce day by day in the coal seam of exploitation, increasing colliery has started to exploit high, the easy outstanding coal seam of gas bearing capacity in order to meet the needs of Demand of Nation and self-growth, before these seam minings, must carry out gas pre-drainage measure.Construct firedamp taking-out discharging drilling in these coal seams time, the general mode that uses wind power slag-discharging, make to produce a large amount of coal dusts near aperture, can cause the dust concentration severe overweight in wind direction tunnel under bore operation place, and high gas layer is implemented in firedamp taking-out discharging drilling process, often with the generation of " spray orifice " phenomenon, coal particle is followed the speed ejection rapidly of a large amount of high concentration gas gas, not only easily injure drilling construction personnel, and gas pours out, also can cause local gas to transfinite, serious harm is to mine safety production.At some containing in high hydrogen sulfide or carbon dioxide coal seam when dry drilling, the hydrogen sulfide of the high concentration producing in boring procedure or carbon dioxide can serious threat to operating personnel's life security.Therefore, must take effective control measures.
At present, domestic existing orifice blowout prevention, dust arrester adopt flange to carry out pipeline connection mostly, the general more complicated of structure; The making material explosion-proof performance mostly using is poor; Device shows slightly heaviness and is not easy to carrying, and volume is bigger than normal, poor for the last small space in bottom, tunnel (removing behind the space that rig, belt or track occupy) compliance.Indivedual orifice blowout prevention dust arresters (as ZL201220537931.1) are although simple in structure, and volume is little, simple operation, and its seal is poor, also can not be according to aperture gas output bleeding regulating amount, anti-spray orifice, dust removing effects are limited; Especially while containing hydrogen sulfide or carbon dioxide in coal seam, cannot remove the hydrogen sulfide or the carbon dioxide that in air-flow, contain, easily life security, healthy the threatening to operating personnel.
Summary of the invention
For the weak point of existing orifice blowout prevention, device for reducing dust, the invention discloses a kind of mining water-bath type orifice blowout prevention and dust arrester, its structure, operating principle are simple, good, safe and reliable without electric power, explosion-proof; Good airproof performance, can work in tandem, can be according to aperture gas output bleeding regulating amount; Noise is little, volume is moderate, operation, convenient in carrying, practical, anti-spray orifice, dust removing effects ideal, be suitable for when gas discharge in mine boring dry type is crept into using, be particularly useful in the coal seam of coal and Coal Seam Prone To Outburst, soft seam or sulfide hydrogen, carbon dioxide when dry type is crept into firedamp taking-out discharging drilling using.
The present invention discloses a kind of mining water-bath type orifice blowout prevention and dust arrester, comprises disposal box, skeleton flexible pipe, water-bath type dust cleaning case, high-pressure rubber pipe etc.Under the effect of the negative pressure of bleeding that the air-flow of aperture ejection provides at gas drainage system, after being collected by disposal box, be drawn into water-bath type dust cleaning case through skeleton flexible pipe, by the mode of gas distribution, the broken bubble of classification, through having added the solution purification of dedusting agent, by dust contained in air-flow, hydrogen sulfide, carbon dioxide sedimentation or absorption, the air-flow that contains gas after purification enters water collector, is finally drawn into methane gas extraction pipeline.Can eliminate by this " spray orifice " phenomenon occurring in firedamp taking-out discharging drilling work progress, guarantee drilling construction safety; Can avoid local gas to transfinite, promote mine safety production simultaneously; Especially can suppress that hydrogen sulfide in drilling construction process, carbon dioxide, gas etc. are poisonous, pernicious gas and dust loss be to tunnel, effectively improves the healthy of operating environment, protection operating personnel.
Described disposal box is made up of mixed material, and wherein aperture insertion pipe, rear end sealed tube and disposal box main body adopt no-spark explosion-proof type aluminum copper alloy material to make, and gas collection mouth, scum pipe adopt hard plastics to make; Gas collection mouth upper end is " bamboo shoot " formula interface, connecting framework flexible pipe, and lower end adopts helicitic texture to be connected with disposal box main body; Disposal box main body upper end adopts broad mouth type design, the resistance that reduce dust collecting opening gas collection, gathers dust, and lower end adopts the design of handstand broad mouth type, is convenient to collect drilling cuttings, realizes drilling cuttings and separates with dust is automatic; Boring is inserted in insertion pipe one end, aperture, and the other end adopts the mode of clamping to be connected with disposal box main body; Rear end sealed tube adopts snap fit to be connected with disposal box main body, the other end is provided with the airtight cushion rubber of being made by elastomeric material, gap between airtight drilling rod and rear end sealed tube, after aperture insertion pipe and airtight cushion rubber are by drilling rod heavy wear, can be for convenience detach, change; Scum pipe upper end adopts helicitic texture to be connected with disposal box main body, lower end is equipped with spring and is drawn lid, spring La Gai one end adopts hinge structure to be connected with scum pipe bottom, hinge structure offside hangs with a spring with certain coefficient of elasticity, and the other end of spring hangs on the hook of scum pipe lower inner wall; In the time that spring draws the side of covering to accumulate the drilling cuttings of constant weight, lid is backed down, drilling cuttings drops out from opening part, along with the minimizing of the coal powder quantity of bore above lid, in the time that the deadweight sum of lid top drilling cuttings weight and lid is less than spring tension, spring draws lid to close, and has reduced the air capacity that enters disposal box in tunnel, guarantees to a certain extent the seal of disposal box.
Described skeleton flexible pipe adopts PVC material to make, and the plastic sheeting that inwall cementation layer of surface is smooth reduces the resistance of bleeding, and reduces the hold-up of dust at skeleton hose inner wall, is convenient to clean, dry.
Described water-bath type dust-removing box by storage tank, laying dust pond, outside wireway, inner wireway, air inlet isocon, classification brokenly indulge in serfing the Net, serial interface, fastening bolt, ball valve form; The inside and outside wall in storage tank, laying dust pond adopts stainless steel material to make, between inside and outside wall, be filled with the polyester fiber damping material with certain shatter value, the impact of the noise producing with reduction air-flow and fluid friction on operating environment, inner wall surface scribbles epoxide coal bituminous material, acid-proof, caustic corrosion; Storage tank is connected by hinge structure with laying dust pond, can convenient folding, and the offside of hinge structure is equipped with fastening bolt structure, and storage tank lower end is tightened together with upper end, laying dust pond; There is a circle groove on top, laying dust pond, places sealing mat, to prevent storage tank and the fastening place leakage of laying dust pond in groove.
There are four extraction valves described storage tank top, be connected with water collector admission valve by high-pressure rubber pipe, generally use one or two, if aperture gas output is larger, can suitably increase the usage quantity of extraction valve, to increase the rate of air sucked in required of water-bath type dust cleaning case or the gas collection amount of disposal box; A water intaking valve is arranged at storage tank top, can connect static pressure water pipe, for storage tank supplies water; Water intaking valve offside has " bamboo shoot " formula serial interface, adopts rubber plug sealing while not needing to connect water-bath type dust cleaning case, avoids gas leakage to affect blowout prevention or dust removing effects; Under the condition allowing in negative pressure, multiple water-bath type dust cleaning case series connection can be worked together simultaneously, the air-flow that contains dirt, hydrogen sulfide or carbon dioxide is repeatedly purified, guarantee that water-bath type dust cleaning case has better environmental suitability and more stable clean-up effect; On wall, there is slit-aperture type observation window of liquid level, adopt rubber packing material and transparent resin material to make, can clearly observe liquid level position; A draining valve is arranged at storage tank bottom, for discharge opeing, adjusting liquid level.
Described outside wireway one end is " bamboo shoot " formula air inlet port, connecting framework flexible pipe; The other end adopts helicitic texture, is communicated with storage tank bottom; The middle quick junction being made up of quick inserting joint and straight-through interface a place, is convenient to fast outside wireway be taken apart and cleaned.
Described wireway one end, inside has helicitic texture can be installed on storage tank inwall, with for convenience detach; The other end adopts helicitic texture to be connected with air inlet isocon.
Described air inlet isocon one end is connected with inner wireway by helicitic texture, can be for convenience detach, clean inwall; The other end is equipped with the rubber plug that is clamped in air inlet isocon inwall, prevents that gas from entering liquid without shunting; On air inlet isocon, there is the aperture of some, certain diameter, for shunting the gas entering in storage tank, make unlikely too the concentrating of gas enter the larger bubble of liquid internal formation, reduce the broken load of indulging in serfing the Net of classification.
Broken the indulging in serfing the Net of described classification is made up of filter screen, " well " font fine steel rib, " recessed " font rubber ring, and filter screen adopts stainless steel or copper material to make, and is clipped in by the middle of two-layer " well " type fine steel rib that adopts stainless steel material to make; The edge card of " well " type fine steel rib, can be for convenience detach, clean, change in the groove of " recessed " font rubber ring; Broken the indulging in serfing the Net of classification has four layers, is arranged in storage tank middle part, be stuck in the groove of storage tank inwall, and the certain distance in interval between adjacent two layers, one deck classification broken indulging in serfing the Net in below is arranged in air inlet isocon top, and the certain distance in interval with it; Four metafiltration netting gears have different order numbers, and its order number reduces the position at place separately from top to bottom successively by it, bubble larger equivalent diameter " cutting " can be become to the less bubble of equivalent diameter, to increase the gross area of gas-liquid contact face; Screen surface, with tiny spine, can puncture bubble in the process of " cutting " bubble, impels gas-liquid fully contact as much as possible.
The invention has the advantages that: structure, operating principle are simple, good, safe and reliable without electric power, explosion-proof; Good airproof performance, can work in tandem, can be according to aperture gas output bleeding regulating amount; Volume is moderate, and operation, convenient in carrying are practical; Anti-spray orifice, dust removing effects ideal, can suck the high concentrate dust that also sedimentation gas discharge in mine boring dry drilling produces effectively, eliminates coal and Coal Seam Prone To Outburst or soft seam dry type and creep into " spray orifice " phenomenon that firedamp taking-out discharging drilling is prone to; The coal seam of especially poisonous for the hydrogen sulfide or the carbon dioxide etc. that contain high concentration, pernicious gas; in water-bath type dust-removing box, add certain density dedusting agent (containing a certain amount of alkaline components); can effectively hydrogen sulfide or carbon dioxide be absorbed, protection bore operation personnel's is healthy.
Accompanying drawing explanation
Fig. 1 is the structure chart of water-bath type dust-removing box of the present invention;
Fig. 2 is overall structure figure of the present invention;
Fig. 3 is the broken structure chart of indulging in serfing the Net of classification of the present invention;
Fig. 4 is the structure chart of disposal box of the present invention.
In figure, 1. storage tank, 2. laying dust pond, 3. air inlet port, 4. extraction valve, 5. water intaking valve, 6. draining valve, 7. serial interface, 8. outside wireway, 9. inner wireway, 10. fast interface, 11. screw threads, 12. air inlet isocons, 13. classifications are broken indulges in serfing the Net, 14. rubber rings, 15. fine steel ribs, 16. observation window of liquid levels, 17. rubber plugs, 18. sealing mats, 19. hinges, 20. fastening bolts, 21. damping materials, 22. disposal boxes, 23. gas collection mouths, 24. aperture insertion pipes, 25. rear end sealed tubes, 26. airtight cushion rubbers, 27. scum pipes, 28. springs draw lid, 29. disposal box main bodys, 30. skeleton flexible pipes, 31. pipe collars, 32. ribs, 33. rigs, 34. drilling rods, 35. drill bits, 36. air lines, 37. cinders, 38. water-bath type dust cleaning cases, 39. high-pressure rubber pipes, 40. water collectors, 41. water collector admission valves, 42. water collector discharging valves, 43. methane gas extraction pipelines.
The specific embodiment
By reference to the accompanying drawings the specific embodiment of the present invention is described: start, before boring, first with skeleton flexible pipe 30, the gas collection mouth 23 of disposal box to be connected with the air inlet port 3 of water-bath type dust cleaning case, and junction is compressed with pipe collar 31; Then connect extraction valve 4 and water collector admission valve 41 with high-pressure rubber pipe 39, and confirm whether water collector 40 is connected with methane gas extraction pipeline 43.
Before adding water in water-bath type dust cleaning case 38, the fastening bolt 20 that comes loose, opens water-bath type dust cleaning case 38, dedusting agent is put into behind laying dust pond 2, then fastening bolt 20 is screwed; And then static pressure water pipe is connected with the water intaking valve 5 of water-bath type dust cleaning case.Open water intaking valve 5, discharge water and enter water-bath type dust cleaning case 38, observe liquid level change by observation window of liquid level 16, until liquid level, just the classification of the Mei Guo the superiors is broken indulges in serfing the Net 13 o'clock, closes water intaking valve 5.
When construction drill, first adopt large size drill bit (its diameter is identical with aperture insertion pipe 24 external diameters) perforate, creep into after 0.5m, exit drilling rod 34, take off large size drill bit.Disposal box 22 is enclosed within on drilling rod 34, and drilling rod 34 penetrates from rear end sealed tube 25, passes from aperture insertion pipe 24, then at drilling rod 34 front ends, small size its diameter of drill bit 35(is installed identical with drilling design diameter), in drill bit 35 and aperture insertion pipe 24 patchholes.Confirm after aperture insertion pipe 24 and rib 32 close contacts, disposal box main body 29 is fixed with iron wire and support bar.Open successively after the extraction valve 4 of water collector admission valve 41, water-bath type dust cleaning case, can start the work of normally creeping into of boring.
If aperture gas output is larger, can suitably increase the usage quantity of extraction valve 4, connect water-bath type dust cleaning case extraction valve and corresponding water collector admission valve with high-pressure rubber pipe, to increase the rate of air sucked in required of water-bath type dust cleaning case 38 or the gas collection amount of disposal box 22; In addition, under the condition allowing in negative pressure, if desired multiple water-bath type dust cleaning cases 38 are connected and are worked together simultaneously, and rubber plug 17 that can serial interface 7 places takes off, and by skeleton flexible pipe 30, serial interface 7 are connected successively with the air inlet port 3 of adjacent water-bath type dust cleaning case.
Wait to drill complete, exit drill bit 35, close successively extraction valve 4, water collector admission valve 41, disposal box 22 is taken off, open draining valve 6, the waste water in water-bath type dust cleaning case 38 is entered behind gutter, pull down skeleton flexible pipe 30, high-pressure rubber pipe 39.Clean disposal box 22 with static pressure water, open water-bath type dust cleaning case 38, clean laying dust pond 2, and by brokenly to air inlet isocon 12, inner wireway 9, classification indulging in serfing the Net 13, outside wireway 8 pulls down cleaning successively.After cleaning, by brokenly classification indulging in serfing the Net 13, inner wireway 9, air inlet isocon 12, outside wireway 8 load onto successively, empties the ponding in laying dust pond 2, the storage tank 1 that closes, fastening with fastening bolt 20.
The design of a kind of mining water-bath type orifice blowout prevention of the present invention and dust arrester is: in dry drilling drilling process, blow under the effect of the negative pressure of bleeding that air-flow that (spray) go out provides at gas drainage system in aperture, collect through disposal box, enter in water-bath type dust-removing box, shunt through air inlet isocon, the bubble of the dispersion forming at the liquid internal that contains dedusting agent, classified broken indulging in serfing the Net after these bubble graded crushings again, make it fully to contact with solution, thereby remove poisonous, the pernicious gas of the high concentrations such as dust in air-flow and hydrogen sulfide, carbon dioxide.The present invention can make according to material, specification, form of structure etc. the dust arrester of different materials, specification and form of structure, without departing from the inventive concept of the premise, all should belong to protection scope of the present invention.
Claims (9)
1. a mining water-bath type orifice blowout prevention and dust arrester, by disposal box, skeleton flexible pipe, water-bath type dust cleaning case, the compositions such as high-pressure rubber pipe, it is characterized in that: blow under the effect of the negative pressure of bleeding that air-flow that (spray) go out provides at gas drainage system in aperture, after being collected by disposal box, be drawn into water-bath type dust cleaning case through skeleton flexible pipe, pass through gas distribution, the mode of the broken bubble of classification, through having added the solution purification of dedusting agent, by dust contained in air-flow, hydrogen sulfide, carbon dioxide sedimentation or absorption, the air-flow that contains gas after purification enters water collector, finally be drawn into methane gas extraction pipeline.
2. mining water-bath type orifice blowout prevention according to claim 1 and dust arrester, it is characterized in that: described disposal box is made up of mixed material, wherein aperture insertion pipe, rear end sealed tube and disposal box main body adopt no-spark explosion-proof type aluminum copper alloy material to make, and gas collection mouth, scum pipe adopt hard plastics to make; Gas collection mouth upper end is " bamboo shoot " formula interface, connecting framework flexible pipe, and lower end adopts helicitic texture to be connected with disposal box main body; Disposal box main body upper end adopts broad mouth type design, and lower end adopts the design of handstand broad mouth type; Boring is inserted in insertion pipe one end, aperture, and the other end adopts the mode of clamping to be connected with disposal box main body; Rear end sealed tube adopts snap fit to be connected with disposal box main body, and the other end is provided with the airtight cushion rubber of being made by elastomeric material; Scum pipe upper end adopts helicitic texture to be connected with disposal box main body, lower end is equipped with spring and is drawn lid, spring La Gai one end adopts hinge structure to be connected with scum pipe bottom, and hinge structure offside hangs with a spring, and the other end of spring hangs on the hook of scum pipe lower inner wall.
3. mining water-bath type orifice blowout prevention according to claim 1 and dust arrester, is characterized in that: described skeleton flexible pipe adopts PVC material to make, the plastic sheeting that inwall cementation layer of surface is smooth.
4. mining water-bath type orifice blowout prevention according to claim 1 and dust arrester, is characterized in that: described water-bath type dust-removing box by storage tank, laying dust pond, outside wireway, inner wireway, air inlet isocon, classification brokenly indulge in serfing the Net, serial interface, fastening bolt, ball valve form; The inside and outside wall in storage tank, laying dust pond adopts stainless steel material to make, and is filled with polyester fiber damping material between inside and outside wall, and inner wall surface scribbles epoxide coal bituminous anti-corrosion material;
Storage tank is connected by hinge structure with laying dust pond, and the offside of hinge structure is equipped with fastening bolt structure; There is a circle groove on top, laying dust pond, places sealing mat in groove.
5. water-bath type dust cleaning case according to claim 4, is characterized in that: there are four ball valves of bleeding described storage tank top, and a draining valve is arranged at bottom, and a water intaking valve is arranged at top, and water intaking valve offside has " bamboo shoot " formula serial interface; On wall, there is slit-aperture type observation window of liquid level, adopt rubber packing material and transparent resin material to make.
6. water-bath type dust-removing box according to claim 4, is characterized in that: described outside wireway one end is " bamboo shoot " formula air inlet port, and the other end has helicitic texture, is communicated with storage tank bottom; What centre was made up of quick inserting joint and straight-through interface a place disconnects place fast.
7. water-bath type dust-removing box according to claim 4, is characterized in that: described wireway one end, inside has helicitic texture can be installed on storage tank inwall; The other end adopts helicitic texture to be connected with air inlet isocon.
8. water-bath type dust-removing box according to claim 4, is characterized in that: described air inlet isocon one end is connected with inner wireway by helicitic texture, can be for convenience detach, clean inwall; The other end is equipped with the rubber plug that is clamped in air inlet isocon inwall, prevents that gas from entering liquid without shunting; On air inlet isocon, there is the aperture of some, certain diameter, for shunting the gas entering in storage tank, make unlikely too the concentrating of gas enter the larger bubble of liquid internal formation, reduce the broken load of indulging in serfing the Net of classification.
9. water-bath type dust-removing box according to claim 4, it is characterized in that: broken the indulging in serfing the Net of described classification is made up of filter screen, " well " font fine steel rib, " recessed " font rubber ring, filter screen adopts stainless steel or copper material to make, surface, with tiny spine, is clipped in by the middle of two-layer " well " type fine steel rib that adopts stainless steel material to make; The edge card of " well " type fine steel rib is in the groove of " recessed " font rubber ring; Broken the indulging in serfing the Net of classification has four layers, is arranged in storage tank middle part, be stuck in the groove of storage tank inwall, and the certain distance in interval between adjacent two layers, one deck classification broken indulging in serfing the Net in below is arranged in air inlet isocon top, and the certain distance in interval with it; Four metafiltration netting gears have different order numbers, and its order number reduces the position at place separately from top to bottom successively by it.
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| CN201410077160.6A CN103790618B (en) | 2014-03-05 | 2014-03-05 | A kind of mining water-bath type orifice blowout prevention and dust arrester |
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| CN104456809A (en) * | 2014-11-12 | 2015-03-25 | 沈杰 | Simulating atomization simulating air purifier |
| CN104453986A (en) * | 2014-12-17 | 2015-03-25 | 任花鹏 | Negative-pressure gas exhaust and water slag drainage device |
| CN104963716A (en) * | 2015-06-11 | 2015-10-07 | 中国矿业大学(北京) | Mining floating bubble deduster |
| CN107270992A (en) * | 2017-07-05 | 2017-10-20 | 徐忠 | A kind of liquid level emasuring device of the flotation device of tailings processing |
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| CN107975349B (en) * | 2016-10-21 | 2023-09-29 | 中国石油化工股份有限公司 | Oil field jet sand-washing blocking-removing operation waste liquid treatment device and method |
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| CN109488362A (en) * | 2018-11-29 | 2019-03-19 | 安徽省皖北煤电集团有限责任公司 | A kind of coal mining wet precipitator |
| CN109488362B (en) * | 2018-11-29 | 2024-05-24 | 安徽省皖北煤电集团有限责任公司 | Wet dust collector for coal mine |
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| CN115163000B (en) * | 2022-07-15 | 2023-10-27 | 中国矿业大学 | Drilling and anti-spraying hole device and method based on compressed air power |
| CN115199231B (en) * | 2022-07-15 | 2023-10-27 | 中国矿业大学 | Device and method for preventing spray holes with slag discharge, dust removal and extraction integration |
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