CN105041367A - Centralized-control type bubble atomizing dust removal device and method for tunnel respirable dust - Google Patents
Centralized-control type bubble atomizing dust removal device and method for tunnel respirable dust Download PDFInfo
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- CN105041367A CN105041367A CN201510564234.3A CN201510564234A CN105041367A CN 105041367 A CN105041367 A CN 105041367A CN 201510564234 A CN201510564234 A CN 201510564234A CN 105041367 A CN105041367 A CN 105041367A
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Abstract
The invention provides a centralized-control type bubble atomizing dust removal device and method for tunnel respirable dust. An air compressor is connected to a gas inlet pipe and a gas storage tank. The gas storage tank is connected to a liquid storage tank and a gas side check valve. The rear end of the gas side check valve is sequentially connected with a rotor flow meter, a gas side needle valve and a gas side pressure gauge. One side of the liquid storage tank is connected to a water inlet pipe, and the other side of the liquid storage tank is sequentially connected with a filter, a plunger pump, a liquid side check valve, an electromagnetic flow meter, a liquid side needle valve and a liquid side pressure gauge. The rear end of the liquid side pressure gauge and the rear end of the gas side pressure gauge are together connected to a bubble atomizing spray nozzle. The devices between the gas side check valve and the gas side pressure gauge and the devices between the liquid side check valve and the liquid side pressure gauge are all installed in an instrument control box in a centralized mode. Thus, parameters in the dust removal device are adjusted and controlled more easily, rapidly and conveniently; lots of micro-grain-size fog drops are formed after atomizing is conducted through the bubble atomizing spray nozzle, a good collision effect is achieved for respirable dust floating in alleys, the dust removal efficiency is high, and the space safety and environment quality of coal mine alleys are improved.
Description
Technical field
The present invention relates to coal mine roadway treating flour dust field, be specifically related to effervescent atomization device for reducing dust and the method for a kind of centralized-control type large lane respirable dust.
Background technology
Along with coal mining intensity and mechanization degree improve constantly, the product dirt pits of underground coal mine dust and dust-producing amount are also in continuous increase, and the respirable dust (aerodynamic size≤7.07 μm) of trickle particle diameter has become one of major disaster threatening mine safety production and underground labour's health.The respirable dust more than 90% that human body sucks is deposited on tracheae, alveolar, and cause the rushing blood of alveolar and cause pneumoconiosis, respirable dust has higher explosion hazard, and can increase the danger of gas explosion.
Domestic and international many experts and scholar have carried out large quantity research for coal mine roadway dust prevention and control Theory and technology.Nineteen fifty-seven Hodkinson have studied the mixing of respirable dust in air flow in laneway by experiment.The people such as Courtney in 1986 are studied the settlement law of respirable dust in tunnel, show that dust concentration is along the journey regularity of distribution.Dawes.J.G, Slack.A, Pereles.E.G, Cortney.W.G by a large amount of experimental studies dust in distinguished and admirable middle sedimentation and the mechanism to floor deposition thereof.U.S.'s experimental study also applies and reduces drum rotation speed, increases multiple coal wall Dust Control Technology such as cutting dark, air curtain isolation dirt source, wet precipitator and dust removal by ventilation.Many countries attempt adding wetting agent in the injecting process.20 century 70s, Germany attempts research air duct and coordinates wet scrubber to solve machine driven headings high concentrate dust problem.Luan Mining (Group) Co., Ltd. also successfully have developed fully mechanized workface air curtain Wet-type centrifugal dust falling system, and ensure that driver position is all fresh wind to the tunnel of dedusting fan outlet section, effectively reduce the Dust Concentration in tunnel, dustfall efficiency reaches more than 90%.University Of Science and Technology Of Shandong and the unit cooperation such as Yanzhou Mining Group, Zao Kuang group, have developed dust-break curtain, air curtain, the closed dust pelletizing system of new and effective SKZC type air duct and the closed polymeric foam dust-settling technology of girdle, the full dirt in tunnel achieves good dust-laying effect.
Theoretical and technological studies at present about coal mine fully-mechanized mining working, the improvement of return airway space dust is more, and the treating flour dust research of the large lane space in colliery is not enough.Large lane, colliery dust concentration is lower relative to coal-face, but dust size is comparatively thin, and it is more that respirable dust accounts for full dirt mass ratio, and prolonging roadway direction affects space comparatively greatly, and Contact Effect work crowd's time is longer.Therefore the preventing and controlling of large lane respirable dust are coal production technical barriers urgently to be resolved hurrily.The purification efficiency of current conventional atomizing de-dusting technology to respirable dust is generally 20 ~ 40%, causes underground coal mine large lane respirable dust concentration to be in higher level all the time, is seriously harm to healthy the causing of underground labour.Theoretical according to atomizing de-dusting, main cause is that the size droplet diameter of conventional atomizing de-dusting technique ejection is relatively large, and cause bulky grain drop to be difficult to catch the respirable dust in air, dustfall efficiency is low.
Therefore, the device for reducing dust designing a kind of large lane respirable dust is necessary, to solve the problem.
Summary of the invention
For prior art Problems existing, the invention provides a kind of dustfall efficiency high, be convenient to effervescent atomization device for reducing dust and the method for the centralized-control type large lane respirable dust controlled to adjust.
To achieve these goals, the present invention adopts following technical scheme:
The effervescent atomization device for reducing dust of a kind of centralized-control type large lane respirable dust, comprise air compressor, the side of described air compressor is connected to air inlet pipe, opposite side is connected to gasholder, described gasholder is connected to fluid reservoir gentle side stop valve, described gas side stop valve adopts supply air line to be communicated with between described gasholder, stop valve rear end, described gas side is connected with spinner flowmeter in turn, gas side needle-valve, gas lateral pressure meter, the side of described fluid reservoir is connected to water inlet pipe, opposite side is connected with strainer in turn, plunger displacement pump, liquid side stop valve, electromagnetic flowmeter, liquid side needle-valve, liquid lateral pressure meter, described liquid lateral pressure meter and described gas lateral pressure meter rear end are connected to effervescent atomizer jointly, described gas side stop valve, described spinner flowmeter, described gas side needle-valve, described gas lateral pressure takes into account described liquid side stop valve, described electromagnetic flowmeter, described liquid side needle-valve, described liquid lateral pressure meter is installed concentratedly in instrument control box.
Further, described effervescent atomizer is provided with multiple, and one-tenth is connected in parallel.
Further, described effervescent atomizer is installed on the fixed mount of large lane profile head, and the direction of described effervescent atomizer can be adjusted to vertically downward that Huo Yu great lane horizontal plane is at an angle.
Further, described bubble nozzle interior is provided with gas-water mixing cavity, air and water enter mixing in described gas-water mixing cavity and gather, complete a jet mixing fragmentation, described mixing wastewater with air top of chamber is provided with the spray orifice of multiple minor diameter, it is broken that the drop penetrated by described spray orifice completes secondary explosion, forms water mists.
Further, described water mists particle diameter reaches 1-5 μm, absorbs particle diameter in large lane and is less than or equal to the respirable dust of 7.07 μm.
Further, described gasholder is connected to air compressor, described fluid reservoir and described gas side stop valve by threeway simultaneously.
Further, described strainer has two-layer screen pack, is respectively 80 orders and 50 object two-stage stainless steel wire meshes.
Further, described instrument control box is installed on the section of large lane, and described air compressor, described fluid reservoir, described gasholder, described strainer and described plunger displacement pump are installed concentratedly on equipment car, and described equipment car is installed on large lane section.
Adopt a method for the effervescent atomization device for reducing dust of above-mentioned centralized-control type large lane respirable dust, comprising:
Step one: when described gas side stop valve and described air inlet pipe are all opened, open described air compressor, described air compressor provides compressed air to described gasholder, described fluid reservoir and described supply air line, to described gas side stop valve, then successively by described spinner flowmeter, described gas side needle-valve and described gas lateral pressure meter, described effervescent atomizer is entered;
Step 2: when described liquid side stop valve and described water inlet pipe are all opened, open described plunger displacement pump, water in storage tank enters described strainer under the negative pressure and air compressing effect of plunger displacement pump, enter described plunger displacement pump again, to described liquid side stop valve, then successively by described electromagnetic flowmeter, described liquid side needle-valve and described liquid lateral pressure meter, described effervescent atomizer is entered;
Step 3: compressed air and water have mixed a jet crushing in described effervescent atomizer, then are penetrated by described effervescent atomizer, completes secondary explosion broken, forms the depositing dust droplet of trickle particle diameter.
Further, first described instrument control box is installed on large lane section before step one, described effervescent atomizer is installed on the fixed mount of large lane profile head, the equipment car being provided with described air compressor, described fluid reservoir, described gasholder, described strainer and described plunger displacement pump is installed on large lane section simultaneously.
Beneficial effect of the present invention:
The present invention installs the effervescent atomization device for reducing dust of centralized-control type large lane respirable dust on large lane, colliery, utilize air, water two fluid effervescent atomization principle, a large amount of particle diameter is formed at the droplet of 1-5 μm after effervescent atomizer spraying, respirable dust particle diameter floating in large lane being less than or equal to 7.07 μm has good collision effect, dustfall efficiency is high, improves safety and the environmental quality of the large lane space in colliery; And by installing needle-valve, flow meter, the automatic Control Nozzle of pressure gauge realization link on air, water two-way respectively, and stop valve, needle-valve, flow meter, pressure gauge are all installed concentratedly on instrument control box, make the adjustment of the middle flow of effervescent atomization device for reducing dust, pressure and other parameters, control more simple and convenient.
Accompanying drawing explanation
Fig. 1 is the structural representation of device for reducing dust of the present invention;
Fig. 2 is the sectional schematic diagram that device for reducing dust of the present invention is installed on large lane, colliery;
In figure, 1-air inlet pipe, 2-air compressor, 3-gasholder, 4-water inlet pipe, 5-fluid reservoir, 6-strainer, 7-plunger displacement pump, 8-liquid side stop valve, 9-electromagnetic flowmeter, 10-liquid side needle-valve, 11-liquid lateral pressure meter, 12-gas side stop valve, 13-spinner flowmeter, 14-gas side needle-valve, 15-gas lateral pressure meter, 16-effervescent atomizer, 17-instrument control box, 18-rubber tube, 19-fixed mount.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As Fig. 2, the effervescent atomization device for reducing dust of centralized-control type of the present invention large lane respirable dust is installed on the section of large lane, colliery, and the top of large lane section is provided with fixed mount 19.
As Fig. 1, device for reducing dust comprises air compressor 2, the side of air compressor 2 is connected to air inlet pipe 1, opposite side is connected to gasholder 3, gasholder 3 is connected to air compressor 2, fluid reservoir 5 gentle side stop valve 12 by threeway, gas side stop valve 12 adopts supply air line to be communicated with between gasholder 3, and stop valve 12 rear end, gas side is connected with spinner flowmeter 13, gas side needle-valve 14, gas lateral pressure meter 15 in turn, and gas lateral pressure meter 15 rear end is connected to effervescent atomizer 16 by rubber tube.The side of fluid reservoir 5 is connected to water inlet pipe 4, and opposite side is connected with strainer 6, plunger displacement pump 7, liquid side stop valve 8, electromagnetic flowmeter 9, liquid side needle-valve 10, liquid lateral pressure meter 11 in turn, and the rear end of liquid lateral pressure meter 11 is also connected to effervescent atomizer 16.
Air compressor 2, gasholder 3, fluid reservoir 5, strainer 6 and plunger displacement pump 7 are installed concentratedly on equipment car, and equipment car can move to diverse location according to demand, are convenient to install at different large lane sections.
Gas side stop valve 12, spinner flowmeter 13, gas side needle-valve 14, gas lateral pressure meter 15 and liquid side stop valve 8, electromagnetic flowmeter 9, liquid side needle-valve 10, liquid lateral pressure meter 11 are installed concentratedly in instrument control box 17, instrument control box 17 is installed on the side of large lane section, makes the parameter in effervescent atomization device for reducing dust be convenient to centralized Control and regulates.According to the grain size relation of the collision sedimentation between droplet and dust, effervescent atomizer 16 systematic parameter can be adjusted, optimize mist droplet particle size, realize the reasonable disposition between the respirable dust particle diameter of mist droplet particle size and colliery large lane.
Air compressor 2 is connected with gasholder 3, source of the gas power is provided, air is forced into rated pressure after entering air compressor 2 by air inlet pipe 1, after gas side stop valve 12, spinner flowmeter 13, gas side needle-valve 14 and gas lateral pressure meter 15, enter effervescent atomizer 16 again to mix with water, realize effervescent atomization, operating pressure is defined as 0.1-0.2MPa.
Gasholder 3 is for storing the compressed air after air compressor 2 pressurizes, and gasholder 3 is withstand voltage closed storage devices, and the compressed air of storage is used for mixing with water in effervescent atomizer 16 realizing effervescent atomization, and gasholder 3 volume is 1.0m
3, gasholder 3 connects fluid reservoir 5, gas side stop valve 12 by threeway simultaneously.
The water that fluid reservoir 5 provides for storing water inlet pipe 4, fluid reservoir 5 is withstand voltage closed storage devices, adds pressure at air compressor 2, and compressed air enters in fluid reservoir 5 and produces certain pressure to water, be conducive to the effervescent atomization promoting that water is final, fluid reservoir 5 volume is 2.0m
3, fluid reservoir 5 side connects water inlet pipe 4, gasholder 3, and opposite side connects strainer 6.The flow of water is determined according to coal product water content requirement and actual atomizing de-dusting efficiency, can adjust, can close water route during overhaul of the equipments within the scope of 0L/h-160L/h.
Strainer 6 has two-layer screen pack, be respectively 80 orders and 50 object two-stage stainless steel wire meshes, water when strainer 6 through two-layer filtration, during filtered water, drag losses is less, through filtering the probability significantly reducing effervescent atomizer and block because of water foreign, decrease the cost of overhaul, and can prevent from blocking effervescent atomizer 16.
Plunger displacement pump 7 is for extracting the water in fluid reservoir 5; water is delivered in effervescent atomizer 16 through filter 6 under the suction function of plunger displacement pump 7; plunger displacement pump 7 operating pressure is 2MPa; nominal value flow is 150L/min; rated pressure is 5MPa; join 5kW drive motor, be equipped with over-pressure safety device simultaneously.
Gas side path is also provided with gas side stop valve 12, spinner flowmeter 13, gas side needle-valve 14 and gas lateral pressure meter 15.Gas side stop valve 12 profit is single flow stopper, adopts the flap of stopper to realize controlling gas circuit and opens and closes, can only open and cannot regulate and throttling.Stop valve 12 rear end, gas side is connected to spinner flowmeter 13, and spinner flowmeter 13 is for measuring compressed-air actuated flow, and adopt LZB-1.0 glass rotors type mass air flow sensor, measurement category is 4m
3/ h-40m
3/ h, operating pressure is standard atmospheric pressure, and working media temperature is 20 DEG C, and accuracy class is 1.5 grades.Spinner flowmeter 13 rear end connects gas side needle-valve 14, gas side needle-valve 14 is for regulating the flow of gas circuit, adopt latus rectum to be the adjusting needle valve of 20mm, between gas side needle-valve 14 with gas lateral pressure meter 15, adopt internal diameter to be that the rubber tube 18 of 25mm is connected, maximum withstand voltage be 2Mpa.Gas lateral pressure meter 15, for measuring airline pressure, adopts Y-037 float-ball type gas gauge.Gas lateral pressure meter 15 rear end is connected to effervescent atomizer 16 by rubber tube 18.
Liquid side path is also provided with liquid side stop valve 8, electromagnetic flowmeter 9, liquid side needle-valve 10 and liquid lateral pressure meter 11.Liquid side stop valve 8 is in water system pipes, and utilize hydrocushion type spool to realize controlling water route and open and close, gas side stop valve 12, liquid side stop valve 8 all adopt internal thread mode to connect.Stop valve 8 rear end, liquid side connects electromagnetic flowmeter 9, and electromagnetic flowmeter 9 is for measuring the flow in water route, and adopt intelligent electric magnetic flowmeter, measurement category is 0L/h-160L/h, and accuracy class is 1.5 grades.Electromagnetic flowmeter 9 rear end is connected to liquid side needle-valve 10, and liquid side needle-valve 10, for regulating fluid path flow, adopts latus rectum to be the adjusting needle valve of 20mm, adopts internal diameter to be that the rubber tube 18 of 25mm is connected between liquid side needle-valve 10 with liquid lateral pressure meter 11, maximum withstand voltage be 5Mpa.Liquid lateral pressure meter 11 is for measuring the pressure of fluid path, and adopt SKON digital display pressure gauge, liquid lateral pressure meter 11 rear end is connected to effervescent atomizer 16.
Effervescent atomizer 16 utilizes air, water two fluid " the outer liquid of interior gas " mixes bubble atomizing principles jet atomization water body, and material is 304 stainless steels.In the present embodiment, effervescent atomizer 16 is provided with multiple, and adopt U-tube card to be installed in parallel on the fixed mount 19 of large lane, colliery profile head, fixed mount 19 material is the stainless steel tube of φ 20, with U-tube card with the use of, regulate the spacing between effervescent atomizer 16 to be 0.5m.Effervescent atomizer 16 is arranged on fixed mount 19, the injection direction of adjustable effervescent atomizer 16.In the present embodiment, the direction of effervescent atomizer 16 can be adjusted to vertically downward that Huo Yu great lane horizontal plane is at an angle, namely spray straight down, or tilt to spray, make effervescent atomizer 16 Sprayable be the conical hollow of 60 ° of atomizing angles, large lane, colliery tunneling boring can be formed and close the effect of filtering depositing dust.
Effervescent atomizer 16 inside is provided with latus rectum
gas-water mixing cavity, compressed air and water enter mixing in gas-water mixing cavity and gather, and complete a jet mixing fragmentation, then by mixing wastewater with air top of chamber latus rectum
spray orifice injection, owing to there is pressure differential inside and outside nozzle, the drop of injection completes secondary explosion fragmentation, form the water mists that particle diameter reaches 1-5 μm, respirable dust particle diameter in the middle of the return of large lane, colliery being less than or equal to 7.07 μm has good collision, trapping effect, and reach more than 99% to full dirt dust reduction rate, respirable dust dust reduction rate reaches more than 96%, realize the effective improvement to large lane, colliery respirable dust, improve safety and the environmental quality of the large lane space in colliery.
All be communicated with by rubber tube 18 between present device, rubber tube 18 is arranged at the edge of large lane section.Between air compressor 2 to gas lateral pressure meter 15, all devices all adopt four layers of braided steel wire rubber tube 18 of latus rectum φ 25mm to connect, between liquid reserve tank 5 to liquid lateral pressure meter 11, all devices all adopt four layers of braided steel wire rubber tube 18 of latus rectum φ 25mm to connect, gas lateral pressure meter 15, liquid lateral pressure meter 11 with adopt the compound steel silk of latus rectum φ 20mm to weave rubber tube 18 between effervescent atomizer 16 to be connected, the parallel connection between effervescent atomizer 16 adopts the compound steel silk braiding rubber tube 18 of latus rectum φ 18mm to connect.
The relatively independent interaction relation connected each other is again kept between each device unit of the present invention, centralized-control type large lane respirable dust effervescent atomization device for reducing dust system centralized-control type is easy and simple to handle, cheap, failure rate is low, be convenient to install, safeguard, be applicable to various scale underground coal mine large lanes respirable dust to administer, there is wide market prospects and higher promotional value.
The present invention adopts the effervescent atomization device for reducing dust of above-mentioned centralized-control type large lane respirable dust to carry out the method for large lane, colliery respirable dust process, comprises the following steps:
Step one: instrument control box 17 and equipment car are installed on large lane section, effervescent atomizer 16 is installed on fixed mount 19, fixed mount 19 by rockbolt installation in colliery large lane profile head, the horizontal spacing of installation of effervescent atomizer 16 is 0.5m, the quantity of installing effervescent atomizer 16 can be determined according to large lane, colliery top width, effervescent atomizer 16 direction can be adjusted to vertically downward that Huo Yu great lane horizontal plane is at an angle, the conulite mist torch arranged side by side that effervescent atomizer 16 spraying is formed can cover large lane, colliery tunneling boring, filter, the respirable dust that collision sedimentation is passed through.
Step 2: when gas side stop valve 12, air inlet pipe 1 are all opened, open air compressor 2, adjustment air compressor 2 is forced into nominal manipulation pressure 0.1MPa, air compressor 2 provides compressed air to gasholder 3, fluid reservoir 5 and supply air line, to gas side stop valve 12, then successively by spinner flowmeter 13, gas side needle-valve 14 and gas lateral pressure meter 15, effervescent atomizer 16 is entered;
Step 3: when liquid side stop valve 8, water inlet pipe 4 are all opened, opening plunger pump 7, adjustment plunger displacement pump 7 operating pressure is 2MPa, nominal value flow is 150L/min, water in fluid reservoir 5 enters strainer 6 under the negative pressure and air compressing effect of plunger displacement pump 7, through the filtration of 80 orders and 50 object stainless steel two-stage wire laths, plunger displacement pump 7 is entered again by four layers of braided steel wire rubber tube 18 of latus rectum φ 25mm, to liquid side stop valve 8, then successively by electromagnetic flowmeter 9, liquid side needle-valve 10 and liquid lateral pressure meter 11, effervescent atomizer 16 is entered;
Opening when gas side stop valve 12, liquid side stop valve 8 normally work, only closing when safeguarding device for reducing dust.
Step 4: compressed air has mixed jet droplets primary fragmentation with water in the gas-water mixing cavity of described effervescent atomizer 16, again by the latus rectum of mixing wastewater with air top of chamber be φ 1.2mm spray orifice injection, because space outerpace pressure is relatively low, the droplet particles of injection completes secondary explosion fragmentation, forms the depositing dust droplet of a large amount of trickle particle diameter.Adopt above-mentioned device for reducing dust to carry out atomized dust settling, its nebulization efficiency is very high, and the mist droplet particle size of formation is comparatively thin, and the water yield that the unit interval consumes is relatively less, reduces the volume of fluid reservoir 5, saves and takes up an area space, and reduces the impact on large lane vehicular traffic, personnel.
The principle that effervescent atomization make use of gas, water two fluid is mixed to form water mists, compressed-air actuated percussion greatly reduces the pressure needed for water body jet atomization, air compressor operating pressure only needs 0.1-0.2Mpa, the operating pressure of plunger displacement pump only needs 2Mpa, avoids the high intensity noise using high-pressure hydraulic pump to produce and pollutes.Compressed-air actuated percussion not only reduces the pressure needed for water body jet atomization, also largely overcomes the easy blockage problem of nozzle simultaneously, decreases the cost of overhaul of spraying system.
The respirable dust effervescent atomization device for reducing dust centralized-control type control operation of centralized-control type large lane is easy, cheap, failure rate is low, be convenient to install, safeguard, this device reaches more than 99% to the full dirt dust reduction rate in large lane, colliery, respirable dust dust reduction rate reaches more than 96%, is applicable to various scale underground coal mine large lanes respirable dust and administers.
Above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those skilled in the art are to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of the technical program, it all should be encompassed in right of the present invention.
Claims (10)
1. the effervescent atomization device for reducing dust of a centralized-control type large lane respirable dust, it is characterized in that, comprise: air compressor, the side of described air compressor is connected to air inlet pipe, opposite side is connected to gasholder, described gasholder is connected to fluid reservoir gentle side stop valve, described gas side stop valve adopts supply air line to be communicated with between described gasholder, stop valve rear end, described gas side is connected with spinner flowmeter in turn, gas side needle-valve, gas lateral pressure meter, the side of described fluid reservoir is connected to water inlet pipe, opposite side is connected with strainer in turn, plunger displacement pump, liquid side stop valve, electromagnetic flowmeter, liquid side needle-valve, liquid lateral pressure meter, described liquid lateral pressure meter and described gas lateral pressure meter rear end are connected to effervescent atomizer jointly, described gas side stop valve, described spinner flowmeter, described gas side needle-valve, described gas lateral pressure takes into account described liquid side stop valve, described electromagnetic flowmeter, described liquid side needle-valve, described liquid lateral pressure meter is installed concentratedly in instrument control box.
2. the effervescent atomization device for reducing dust of centralized-control type according to claim 1 large lane respirable dust, is characterized in that: described effervescent atomizer is provided with multiple, and one-tenth is connected in parallel.
3. the effervescent atomization device for reducing dust of centralized-control type according to claim 1 large lane respirable dust, it is characterized in that: described effervescent atomizer is installed on the fixed mount of large lane profile head, the direction of described effervescent atomizer can be adjusted to vertically downward that Huo Yu great lane horizontal plane is at an angle.
4. the effervescent atomization device for reducing dust of centralized-control type according to claim 1 large lane respirable dust, it is characterized in that: described bubble nozzle interior is provided with gas-water mixing cavity, air and water enter mixing in described gas-water mixing cavity and gather, complete a jet mixing fragmentation, described mixing wastewater with air top of chamber is provided with the spray orifice of multiple minor diameter, it is broken that the drop penetrated by described spray orifice completes secondary explosion, forms water mists.
5. the effervescent atomization device for reducing dust of centralized-control type according to claim 4 large lane respirable dust, is characterized in that: described water mists particle diameter reaches 1-5 μm, absorbs particle diameter in large lane and is less than or equal to the respirable dust of 7.07 μm.
6. the effervescent atomization device for reducing dust of centralized-control type according to claim 1 large lane respirable dust, is characterized in that: described gasholder is connected to described air compressor, described fluid reservoir and described gas side stop valve by threeway simultaneously.
7. the effervescent atomization device for reducing dust of centralized-control type according to claim 1 large lane respirable dust, is characterized in that: described strainer has two-layer screen pack, is respectively 80 orders and 50 object two-stage stainless steel wire meshes.
8. the effervescent atomization device for reducing dust of centralized-control type according to claim 1 large lane respirable dust, it is characterized in that: described instrument control box is installed on the section of large lane, described air compressor, described fluid reservoir, described gasholder, described strainer and described plunger displacement pump are installed concentratedly on equipment car, and described equipment car is installed on large lane section.
9. adopt a method for the effervescent atomization device for reducing dust of the large lane of the centralized-control type according to any one of claim 1 to 8 respirable dust, it is characterized in that, comprising:
Step one: when described gas side stop valve and described air inlet pipe are all opened, open described air compressor, described air compressor provides compressed air to described gasholder, described fluid reservoir and described supply air line, to described gas side stop valve, then successively by described spinner flowmeter, described gas side needle-valve and described gas lateral pressure meter, described effervescent atomizer is entered;
Step 2: when described liquid side stop valve and described water inlet pipe are all opened, open described plunger displacement pump, water in fluid reservoir enters described strainer under the negative pressure and air compressing effect of plunger displacement pump, enter described plunger displacement pump again, to described liquid side stop valve, then successively by described electromagnetic flowmeter, described liquid side needle-valve and described liquid lateral pressure meter, described effervescent atomizer is entered;
Step 3: compressed air and water have mixed a jet crushing in described effervescent atomizer, then are penetrated by described effervescent atomizer, completes secondary explosion broken, forms the depositing dust droplet of trickle particle diameter.
10. method according to claim 9, it is characterized in that: before step one, first described instrument control box is installed on large lane section, described effervescent atomizer is installed on the fixed mount of large lane profile head, the equipment car being provided with described air compressor, described fluid reservoir, described gasholder, described strainer and described plunger displacement pump is installed on large lane section simultaneously.
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| CN105863720A (en) * | 2016-05-06 | 2016-08-17 | 太原理工大学 | Mining bubble atomization water mist dust settling device |
| CN105971658A (en) * | 2016-05-06 | 2016-09-28 | 太原理工大学 | Bubble atomizing goaf gas-liquid two-phase flow fire prevention and extinguishing system |
| CN106423609A (en) * | 2016-11-04 | 2017-02-22 | 赫曼(南京)机械技术工程有限公司 | Super atomizing and dust-falling device |
| CN111351731A (en) * | 2020-04-16 | 2020-06-30 | 中煤科工集团重庆研究院有限公司 | Mine working flour dust hazard on-line monitoring system and method |
| CN117052412A (en) * | 2023-10-10 | 2023-11-14 | 太原理工大学 | Gob-side entry driving method for high-gas coal seam |
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| CN105863720A (en) * | 2016-05-06 | 2016-08-17 | 太原理工大学 | Mining bubble atomization water mist dust settling device |
| CN105971658A (en) * | 2016-05-06 | 2016-09-28 | 太原理工大学 | Bubble atomizing goaf gas-liquid two-phase flow fire prevention and extinguishing system |
| CN105971658B (en) * | 2016-05-06 | 2018-05-18 | 太原理工大学 | A kind of effervescent atomization goaf biphase gas and liquid flow fire extinguishing system |
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| CN111351731A (en) * | 2020-04-16 | 2020-06-30 | 中煤科工集团重庆研究院有限公司 | Mine working flour dust hazard on-line monitoring system and method |
| CN117052412A (en) * | 2023-10-10 | 2023-11-14 | 太原理工大学 | Gob-side entry driving method for high-gas coal seam |
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