CN207261034U - Excavation face in coal mine dust pelletizing system - Google Patents
Excavation face in coal mine dust pelletizing system Download PDFInfo
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- CN207261034U CN207261034U CN201720884473.1U CN201720884473U CN207261034U CN 207261034 U CN207261034 U CN 207261034U CN 201720884473 U CN201720884473 U CN 201720884473U CN 207261034 U CN207261034 U CN 207261034U
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Abstract
本实用新型公开了一种煤矿综掘工作面除尘系统，包括：设置在掘进机一侧的控尘系统，控尘系统包括依次连接的压入式风机、压入式风筒和附壁风筒；吸尘系统，吸尘系统包括分别用于吸取掘进机截割头位置处、铲板位置处和刮板运输机与皮带输送机转运点位置处的粉尘的第一吸尘罩、第二吸尘罩和第三吸尘罩以及吸尘风筒、吸尘罩组装箱，第一吸尘罩、第二吸尘罩、第三吸尘罩和吸尘风筒均与吸尘罩组装箱连接；设置在掘进机另一侧的收尘系统，包括依次连接的抽出式风筒、除尘器和抽出式风机，抽出式风筒与吸尘罩组装箱连接。该煤矿综掘工作面除尘系统能有效控制粉尘在井下巷道的扩散传播，吸尘效果好，收尘效率高，可大大降低煤矿综掘工作面粉尘浓度。
The utility model discloses a dust removal system for fully mechanized excavation working faces in coal mines, comprising: a dust control system arranged on one side of the roadheader, the dust control system includes a press-in fan, a press-in air cylinder and a wall-attached air cylinder connected in sequence Dust suction system, the dust suction system includes the first dust suction hood and the second dust suction cover respectively used to suck the dust at the position of the cutting head of the roadheader, the position of the shovel plate and the transfer point of the scraper conveyor and the belt conveyor The hood and the third dust collection hood and the dust collection air cylinder and the dust collection hood assembly box, the first dust collection hood, the second dust collection hood, the third dust collection hood and the dust collection air cylinder are all connected with the dust collection hood assembly box; The dust collection system arranged on the other side of the roadheader includes a draw-out air duct, a dust collector and a draw-out fan connected in sequence, and the draw-out air duct is connected with the dust collection hood assembly box. The coal mine fully mechanized excavation working face dust removal system can effectively control the diffusion of dust in the underground roadway, has good dust absorption effect and high dust collection efficiency, and can greatly reduce the coal mine fully mechanized excavation flour dust concentration.
Description
Technical field
Coal mine dedusting technical field is the utility model is related to, more particularly to a kind of excavation face in coal mine dust pelletizing system.
Background technology
Fully mechanized workface is one of main dust point of underground coal mine, with constantly carrying for coal mining machinery degree
Height, efficient, high-power development machine widely use, and pit mining intensity is increasing, and the dust yield of fully mechanized workface is anxious
Increase severely and add, seriously affect the health of worker, threaten the safety in production of mine.China's condition of coal seam occurrence is complicated, production work
Skill difference is very big, especially underground fully mechanized workface there is dust yield is big, concentration is high, ventilation difficulty it is big the problems such as, greatly
Amount dust is suspended in air, not only so that working face visibility reduces, tunnel is normally tunneled and is affected greatly, and right
The health of operating personnel, which is formed, to be seriously endangered, and therefore, the dust of fully mechanized workface is effectively controlled, for ensureing underground work
The physical and mental health of personnel is of great practical significance.
General dust suppression is only used only, it is impossible to fundamentally solve the dust present situation of fully mechanized workface.Dust-separation curtain, net
The dust Control that the closed closed dust collecting process of dust collecting process and air curtain can meet head on comprehensive pick face is before development machine driver
Side, avoids dust from being spread to tunnel rear.But application dust-separation curtain, the closed dust collecting process of net can be to development machine driver sight and picks
Had an impact into machine operation, the closed dust collecting process of air curtain also brings along noise pollution and influences the problems such as development machine operates.
Distinguished and admirable to blow to excavation face in coal mine straight at getting working face position, many dust can not be siphoned away by dedusting fan, then be added
Upper excavation face in coal mine dust yield is big, concentration is high, dispersion degree is high, and ventilation difficulty is big and dust point dirt source distribution does not collect
In, traditional dust suction mode can not effectively collect dust, and dust removing effects are poor.
Utility model content
The purpose of this utility model is to provide a kind of excavation face in coal mine dust pelletizing system, is deposited with solving the above-mentioned prior art
The problem of, effectively controlling dust, pick-up performance is good, and dust-collecting efficiency is high, can substantially reduce coal in the diffusive transport of underworkings
Ore deposit fully mechanized workface dust concentration.
To achieve the above object, the utility model provides following scheme：
The utility model provides a kind of excavation face in coal mine dust pelletizing system, including：
Dirt system is controlled, the control dirt system is arranged on development machine side, and the control dirt system includes sequentially connected press-in
Formula wind turbine, forced air duct and air duct；
Dust collecting system, the dust collecting system include the first dust hood, the second dust hood, the 3rd dust hood, dust suction air duct and
Dust hood assembles case, and first dust hood, the second dust hood and the 3rd dust hood are respectively used to draw cutting head of roadheader position
Put place, at shovel board of development machine position and scratch board conveyor and the dust at belt conveyor transhipment point position, first dust suction
Cover, second dust hood and the 3rd dust hood assemble case with the dust hood by air hose and are connected, the dust suction wind
Cylinder is connected with dust hood assembling case；
And dust collecting system, the dust collecting system are arranged on the opposite side of development machine, the dust collecting system includes connecting successively
Pull-out type air duct, deduster and the exhaust fan connect, the pull-out type air duct are connected with dust hood assembling case.
Preferably, the air duct includes cylinder and the multiple guide ducts being arranged on the cylinder lateral wall, each described
Guide duct along the cylinder lateral wall, helically arrange by line style, and guide duct air inlet and guide duct are provided with each guide duct
Air outlet, the guide duct air inlet penetrate through the barrel of the cylinder.
Preferably, the air intake of the cylinder and outlet air end are connected to air duct reducing and taper air duct, the taper
Air duct and the air duct reducing and the cylinder are to be detachably connected.
Preferably, it is provided with the suction inlet of first dust hood, second dust hood and the 3rd dust hood
Netted iron wire, the dust hood assembling case are equipped with the air hose with first dust hood, the wind of second dust hood respectively
Manage, the babinet air inlet that the air hose of the 3rd dust hood is connected with the dust suction air duct, set in each babinet air inlet
It is equipped with deflector.
Preferably, the deduster shakes including self-excitation bathing dust removal part connected in sequence, filler dust removal unit and wet type
String grid dust removal part, the self-excitation water-bath dust removal part are used to trap large dust particle, and the filler dust removal part is used to trap
Smaller particle dust, the wet type vibratory string grid dust removal part are used to trap respirable dust.
Preferably, it is gentle to include inlet plenum, dedusting funnel, S types blade, spill box for the self-excitation bathing dust removal part
Fog chamber, be provided with the inlet plenum air inlet being connected with the pull-out type air duct, the inlet plenum and the aerosol chamber close to
It is disposed side by side on above the dedusting funnel, and the inlet plenum and the aerosol chamber are connected with the dedusting funnel；The S
Type blade is horizontally disposed between the inlet plenum and the aerosol chamber and above the dedusting funnel, the S types blade
Including blade and lower blade, clean room is formed between upper leaf piece and the lower blade；The dedusting funnel bottom passes through
First valve is connected with the first discharge pipe, and the dedusting hopper side walls are connected with the first feed pipe by the second valve；It is described to overflow
Flowing water case is arranged on the outside of the dedusting funnel and is connected by overflow openings with the dedusting funnel, the spill box top
Equipped with the breather chamber for connecting the spill box and the aerosol chamber, the spill box bottom is connected with the by the 3rd valve
Two discharge pipes, the spill box side wall are connected with the second feed pipe by the 4th valve, water level are equipped with the spill box
Monitor.
Preferably, the dedusting funnel is adjustable funnel, and the inlet plenum is to be adjustable into gas chamber, the dedusting funnel bag
The cone fixed sidewall and cone adjustment side wall, the inlet plenum for including both ends interconnection include the cylinder that both ends are connected with each other and consolidate
Determine side wall and cylinder adjustment side wall, the upper end of the cone adjustment side wall is connected with the lower end of cylinder adjustment side wall, described
It is extensible side wall that cone, which adjusts side wall and cylinder adjustment side wall, and the cone adjustment side wall is connected with tune by supporting item
Save hand handle.
Preferably, the filler dust removal part includes sieve plate under filler chamber, packing layer, filler upper sieve plate, filler, described to fill out
Material room is connected with the aerosol chamber, and sieve plate is separately positioned on the upper and lower of the filler chamber under the filler upper sieve plate and the filler
Both ends, described filler layer are arranged under the filler upper sieve plate and the filler between sieve plate, are set on the filler upper sieve plate
There is first jet, the first jet is high-pressure fog nozzle, and the first jet is connected with the first automatic spraying system.
Preferably, the wet type vibratory string grid dust removal part includes jet stream room, vibratory string grid and vibratory string bank tube road, the jet stream room
Enter chamber and ejector including gas, the ejector includes Venturi tube and the second nozzle being arranged in the Venturi tube, institute
Stating Venturi tube includes being sequentially connected and integrally formed induction chamber, trunnion and diffuser, the gas enter chamber one end with it is described
The upper end connection of filler chamber, the other end that the gas enters chamber are connected with the induction chamber, the diffuser and the vibratory string
Bank tube road connects, and the second nozzle is connected with the second automatic spraying system, and the vibratory string bank tube road is connected with the diffuser
One end in be equipped with vibratory string grid described in multilayer, the vibratory string silk of the front and rear vibratory string grid being disposed adjacent is orthogonal.
Preferably, set successively from front to back in the lower section of the vibratory string grid along distinguished and admirable flow direction, the vibratory string bank tube road
It is equipped with dedusting bucket and demisting bucket；The vibratory string bank tube road and the link position of the exhaust fan are provided with wind turbine draining
Pipe.
The utility model achieves following technique effect relative to the prior art：
The local ventilation mode of excavation face in coal mine dust pelletizing system provided by the utility model takes out ventilation for long pressure is short, with
Based on forced ventilation, the supporting mode of ventilation of air duct is installed additional using forced air duct air outlet, installed additional in each dust point
Dust hood, installation is combined with pull-out type air duct with dust hood assembling case by each dust hood and dust suction air duct, while uses attached wall wind
Cylinder and the matched mode of deduster, exhaust ventilation are equipped with deduster dedusting, are to integrate control dirt, dust suction, the closing gathered dust
Formula dust pelletizing system, from control dirt, dust suction, gathering dust effectively controls diffusive transport of the dust in underworkings in terms of three, carries significantly
High dust suction, dust-collecting efficiency, greatly reduce face dust concentration, have received preferable dust-laying effect, eliminate worked
Security risk in journey；The working environment of excavation face in coal mine is improved, is improved work efficiency, reduces underground labour's trouble
The possibility of pneumoconiosis, while mechanical wear has been greatly reduced, improve instrument and equipment service life and precision.
Forced wind turbine produces distinguished and admirable into forced air duct, and flexible wall-attached wind is installed additional in forced air duct air outlet
Cylinder, a distinguished and admirable part for forced air duct blow to working face from taper air duct with mode of jet, and another part is distinguished and admirable to pass through strip
Guide duct is spiral to be blown out forward, and air duct end air outlet is reduced in the case where not changing the original air quantity of driving face
The wind speed at place, slow down the speed that spread to tunnel rear of dust caused by development machine work so that largely dust is being dug
Gathered in front of into machine driver position；While distinguished and admirable formed along wall come out from air duct strip guide duct has certain move
The helical form of energy is distinguished and admirable, produces good wall attachment effect, suppresses dust from flying.The distinguished and admirable kinetic energy of this burst of helical form is in dust suction air duct
Greatly increased under the collective effect for the axial velocity that inlet scoop suction dust laden air produces, so as in development machine driver workspace
Front, which is set up, can stop air curtain of the dust to external diffusion, be effectively sealing off dust caused by development machine work, anti-
Only dust provides clean air ambient to external diffusion for underground development machine driver.
Under exhaust fan effect, the dust suction air duct being inserted into air curtain can be by the distinguished and admirable suction deduster of dust-laden, together
When the first dust hood, the second dust hood, the 3rd dust hood is directly by the cutting units of development machine, shovel board and scratch board conveyor and belt
Dust sucks deduster at the main dust point of the fully mechanized workfaces such as conveyer reloading point, greatly increases the suction of fully mechanized workface
Dirt efficiency.
Dust-laden is distinguished and admirable to enter deduster, and dust removal process purifies successively from coarse granule, fine grained to subparticle, includes multistage
Dedusting：Primary dust removing is self-excitation water-bath dust removal part, and large dust particle is carried out with gravity mechanism, inertia mechanism, centrifugation mechanism
Trapping；Two-stage dust removal is filler dust removal part, with water-bath mechanism, spray mechanism trapping smaller particle dust；3-stage dust-removal is wet
Formula vibratory string grid high-effective dust-removing part, respirable dust is trapped with vibratory string grid high-effective dust-removing mechanism.The deduster is not easy to plug, and is easy to
Cleaning, has stable a, high dust collection efficiency, and it is big to handle air quantity, it is easy to maintenance the advantages that.
Brief description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, drawings in the following description are only the utility model
Some embodiments, for those of ordinary skill in the art, without creative efforts, can also be according to this
A little attached drawings obtain other attached drawings.
Fig. 1 is the structure diagram of the utility model excavation face in coal mine dust pelletizing system
Fig. 2 is the main structure diagram of the air duct of the utility model excavation face in coal mine dust pelletizing system.
Fig. 3 is the A-A sectional views of Fig. 2；
Fig. 4 is the structure diagram of the first dust hood of the utility model excavation face in coal mine dust pelletizing system；
Fig. 5 is the structure diagram of the second dust hood of the utility model excavation face in coal mine dust pelletizing system；
Fig. 6 is the structure diagram of the 3rd dust hood of the utility model excavation face in coal mine dust pelletizing system；
Fig. 7 is the structure diagram of the dust hood assembling case of the utility model excavation face in coal mine dust pelletizing system；
Fig. 8 is the structure diagram of the deflector of the utility model excavation face in coal mine dust pelletizing system；
Fig. 9 is the structure diagram of the deduster of the utility model excavation face in coal mine dust pelletizing system；
Figure 10 is the structure diagram of the ejector of the deduster of the utility model excavation face in coal mine dust pelletizing system；
Figure 11 a are the shapes of the S type blade blades of the deduster of the utility model excavation face in coal mine dust pelletizing system
With size (mm) schematic diagram；
Figure 11 b be the deduster of the utility model excavation face in coal mine dust pelletizing system S type blades under blade shape
With size (mm) schematic diagram；
Figure 11 c are the S type blade combination diagrams of the deduster of the utility model excavation face in coal mine dust pelletizing system；
Figure 12 is the structure diagram of the vibratory string grid of the deduster of the utility model excavation face in coal mine dust pelletizing system；
Figure 13 is the wind turbine drain structure schematic diagram of the utility model excavation face in coal mine dust pelletizing system.
In figure：The forced wind turbines of 1-；The forced air ducts of 2-；3- air ducts；The tapered air ducts of 31-；32- guide ducts；33- is led
Air hose air outlet；34- air duct reducings；35- guide duct air inlets；36- cylinders；4- driver position；5- cutting head of roadheader；6- is dug
Into mechanical shovel plate；The reloading point of 7- scratch board conveyors and belt conveyer；The first dust hoods of 8-；The second dust hoods of 9-；10- the 3rd
Dust hood；101- dust-break curtains；11- dust suction air ducts；12- dust hoods assemble case；121- babinet air inlets；13- pull-out type air ducts；
14- dedusters；The first feed pipes of 141-；142- inlet plenums；1421- air inlets；143- dedusting funnels；1431- adjusts hand handle；
1432- supporting items；The first discharge pipes of 1433-；144-S type blades；1441- blades；Blade under 1442-；145- spill boxes；
1451- overflow openings；The second discharge pipes of 1452-；The second feed pipes of 1453-；1454- water level monitors；1455- breather chambers；
146- aerosol chambers；147- filler chamber；Sieve plate under 1471- fillers；1472- filler upper sieve plates；1473- filling balls；1474- first sprays
Mouth；148- jet streams room；149- ejectors；1491- Venturi tubes；14911- induction chambers；14912- trunnions；14913- diffusers；
1492- second nozzles；1410- vibratory string grid；1411- dedusting buckets；1412- demisting buckets；1413- vibratory string bank tubes road；1414-
Wind turbine drainpipe；14141- deduster inner cylinders, 14142- wind turbine outer cylinders, 14143- wind turbine drainpipe drainage positions；15- takes out
Go out formula wind turbine.
Embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work
All other embodiments obtained, shall fall within the protection scope of the present invention.
The purpose of this utility model is to provide a kind of excavation face in coal mine dust pelletizing system, is deposited with solving the above-mentioned prior art
The problem of, effectively controlling dust, pick-up performance is good in the diffusive transport of underworkings, and dust-collecting efficiency is high, can substantially reduce
Excavation face in coal mine dust concentration.
To enable the above-mentioned purpose of the utility model, feature and advantage more obvious understandable, below in conjunction with the accompanying drawings and have
Body embodiment is described in further detail the utility model.
The utility model provides a kind of excavation face in coal mine dust pelletizing system, as shown in Figure 1, including control dirt system, dust suction
System and dust collecting system, control dirt system are arranged on development machine side, and control dirt system includes sequentially connected forced wind turbine 1, pressure
Enter formula air duct 2 and air duct 3；Dust collecting system includes the first dust hood 8, the second dust hood 9, the 3rd dust hood 10, dust suction wind
Cylinder 11 and dust hood assembling case 12, the first dust hood 8, the second dust hood 9 and the 3rd dust hood 10 are respectively used to draw development machine
Dust at 5 position of cutterhead, at 6 position of shovel board of development machine and at 7 positions of scratch board conveyor and belt conveyor transhipment point, the
One dust hood 8, the second dust hood 9 and the 3rd dust hood 10 assemble case 12 with dust hood by scalable air hose and are connected, dust suction
Air duct 11 is connected with dust hood assembling case 12；Dust collecting system is arranged on the opposite side of development machine, and dust collecting system includes being sequentially connected
Pull-out type air duct 13, deduster 14 and exhaust fan 15, pull-out type air duct 13 and dust hood assembling case 12 is connected.
Using the above structure, the local ventilation mode of excavation face in coal mine dust pelletizing system provided by the utility model selects
Long pressure is short to take out ventilation, based on forced ventilation, installs the supporting ventilation side of air duct 3 additional using forced 2 air outlet of air duct
Formula, dust hood is installed additional in each dust point, and each dust hood is combined installation with deduster air duct with dust hood assembling case, is used at the same time
Air duct and the matched mode of deduster, exhaust ventilation are equipped with deduster dedusting, are to integrate control dirt, dust suction, gather dust
Closed dust pelletizing system, from control dirt, dust suction, gathering dust effectively controls diffusive transport of the dust in underworkings in terms of three,
Dust suction, dust-collecting efficiency are substantially increased, greatly reduces face dust concentration, preferable dust-laying effect is have received, eliminates
Security risk in the course of work；The working environment of excavation face in coal mine is improved, is improved work efficiency, reduces underground
Worker suffers from the possibility of pneumoconiosis, while has been greatly reduced mechanical wear, improves instrument and equipment service life and precision.
In specific scheme, forced distance of the wind turbine 1 away from digging laneway is arranged to 15~20m, and forced air duct 2 is straight
Footpath is the fire-retardant air duct of strength colloid of 800mm, and for each air duct interface using double back-pressure sides, straight hanging, meets ring to hang；Press-in
2 nozzle of formula air duct certain distance, the distance met head on away from development end behind scratch board conveyor and belt conveyor transhipment point 7 are set
For 10~15m, forced air duct 2 overlaps segment length with pull-out type air duct 13 and is set to 10~20m；Forced wind turbine 1 is pressed into air quantity
It is greater than exhaust fan 15 and extracts air quantity out, it is ensured that has distinguished and admirable flowing in superposition section and do not produce circulated air in the section, be pressed into
2 air quantity Q of formula air ductPressureWith 14 suction air volume Q of dedusterTake outRelation be QPressure=(1.2~1.3) QTake out。
As a preferred embodiment, as shown in Figure 2 and Figure 3, excavation face in coal mine provided by the utility model removes
The above-mentioned air duct 3 of dirt system includes cylinder 36 and is arranged on multiple guide ducts 32 on 36 side wall of cylinder, and guide duct 32 is bar
Shape guide duct, guide duct 32 along 36 lateral wall of cylinder, helically arrange by line style, and guide duct air inlet 35 is provided with guide duct 32
With guide duct air outlet 33, guide duct air inlet 35 penetrates through the barrel of cylinder 36.
Air duct 3 in the utility model can change the distinguished and admirable air-out direction of forced air duct, in forced air duct 2
An axial distinguished and admirable part blows to working face from taper air duct 31 with mode of jet, another part by the guide duct 32 of strip forward
Spiral blowout, forms wall attachment effect, and rotation air curtain together is formed in front of driver position, prevents from distinguished and admirable directly blowing to working face simultaneously
Air curtain dust-separation area is formed in the front of driver of roadheader position, prevents dust from being spread to tunnel rear, not only there is control dirt well
Effect, and be conducive to disperse local gas.
In further scheme, as shown in Fig. 2, the air intake and outlet air end of cylinder 36 are connected to air duct reducing 34
With taper air duct 31, taper air duct 31 and air duct reducing 34 and cylinder 36 are to be detachably connected；Air duct 3 is become by air duct
Footpath 34 is directly installed on forced 2 air outlet of air duct, is sized to adjust by the blowing mouth diameter for adjusting taper air duct 31
Allocation of the amount of air is saved, so as to fulfill allocation of the amount of air is adjusted according to actual needs.
In specific scheme, air duct 3 is that (its specific manufactured size need to be according to the reality of application site by a diameter of 800mm
Border situation determines) flexible wall-attached air duct, guide duct 32 is flexible guide duct and is opened forward along hand of helix, forms slit
The distinguished and admirable ejiction opening of shape, slit segment length 2000mm.
As a preferred embodiment, as shown in Fig. 4~8, excavation face in coal mine provided by the utility model removes
Netted iron wire, dust hood are provided with the suction inlet of first dust hood 8 of dirt system, the second dust hood 9 and the 3rd dust hood 10
Assembling case is equipped with the air hose with the first dust hood 8, the air hose of the second dust hood 9, the air hose of the 3rd dust hood 10 and suction respectively
The babinet air inlet 121 that dirt air duct 11 is connected, is provided with deflector in each babinet air inlet 121.
In specific scheme, the first dust hood 8 is arranged in cutting head of roadheader 5 (cutting mechanism) close to pull-out type air duct 15
Side, on the cantilever of development machine, and in 8 center of the first dust hood air hose to be suitably lower than development machine cut
Arm is cut, 8 cover mouth of the first dust hood is vertically arranged with cutting head of roadheader, and assembling case 12 with dust hood by scalable air hose is connected
Connect；Second dust hood 9 is arranged in shovel board of development machine 6 (transferring mechanism) close to dust collecting system side, 9 cover mouth of the second dust hood and pick
It is arranged in parallel into mechanical shovel plate 6, case 12 is assembled with dust hood by scalable air hose and is connected；3rd dust hood 10 is arranged in scraper plate
The reloading point 7 of transporter and belt conveyer (Zhuan Liu mechanisms) top, assembles case 12 with dust hood by scalable air hose and is connected
Connect；Dust suction air duct 11 connects dust hood assembling case 12, and dust hood assembling case 12 connects pull-out type air duct 13.
More specifically in scheme, the first dust hood 8 is to have side rectangle dust hood, wide 0.4m, long 0.8m, controlled wind speed Vc=
2m/s, away from boring head 0.2m；Second dust hood 9 is has a side rectangle dust hood, wide 0.3m, long 0.6m, apart from dirt source 0.2m,
Controlled wind speed Vc=1.5m/s；3rd dust hood 10 is semi-hermetic dust hood, opening wide 0.7m, long 0.7m, dust suction cover opening
Locate cross-sectional area A=0.49m2, install special designing dust-break curtain 101 formed semi-enclosed space, controlled wind speed Vc=1.0m/
s；Water conservancy diversion is arranged at the babinet air inlet 121 that dust hood assembling case 12 is connected with the air hose and dust suction air duct 11 of each dust hood
Plate, can adjust the allocation of the amount of air of each air hose and dust suction air duct 11, it is possible to achieve suction air volume by adjusting deflector air-out area
Multistage multistage adjust, dust suction direction and wind speed size can be controlled at any time；Each dust hood suction inlet arrangement netted iron wire,
Can prevent block dust particles from entering dust hood 12 along cover mouth, avoid dust suction, gather dust during device block, while
Avoid the wasting of resources.
As a preferred embodiment, as shown in Fig. 1, Fig. 9, excavation face in coal mine provided by the utility model removes
The deduster of dirt system is to integrate water-bath, filler, ejector, the efficient composite wet scrubber of vibratory string grid, it includes
Self-excitation bathing dust removal part, filler dust removal part and wet type vibratory string grid dust removal part connected in sequence.
Above-mentioned deduster includes multistage dedusting, and dust removal process purifies successively from coarse granule, fine grained to subparticle：Level-one
Dedusting is self-excitation bathing dust removal part, and large dust particle is trapped with gravity mechanism, inertia mechanism, centrifugation mechanism；Two
Level dedusting is filler dust removal part, with water-bath mechanism, spray mechanism trapping smaller particle dust；3-stage dust-removal is wet type vibratory string grid
High-effective dust-removing part, respirable dust is trapped with vibratory string grid high-effective dust-removing mechanism.Using this structure, do not increasing dedusting substantially
Efficiency of dust collection reaches more than 98.6% in the case of space size shared by system, solves and is reached using a kind of deduster efficiency of dust collection
Less than, and use multistage cleaner cannot meet the narrow space of underground coal mine, special technical conditions and for into
The problem of this requirement；The deduster of excavation face in coal mine dust pelletizing system provided by the utility model is not easy to plug, easy to clear
Wash, there is stable, high dust collection efficiency, processing air quantity is big, it is easy to maintenance the advantages that.
In specific scheme, self-excitation bathing dust removal part include inlet plenum 142, dedusting funnel 143, S types blade 144,
Spill box 145 and aerosol chamber 146, are provided with the air inlet 1421 being connected with deduster air duct 13, inlet plenum on inlet plenum 142
142 and aerosol chamber 146 be disposed side by side on the top of dedusting funnel 143, and inlet plenum 142 and aerosol chamber 146 with dedusting funnel 143
Connection, S types blade 144, which is horizontally mounted, to be arranged between inlet plenum 142 and aerosol chamber 146 and positioned at the top of dedusting funnel 143, S
Type blade 144 includes blade 1441 and lower blade 1442, as shown in Figure 11 a~11c, blade 1441 and lower blade 1442
Between form clean room；143 bottom of dedusting funnel is connected with the first discharge pipe 1433,143 side of dedusting funnel by the first valve
Wall is connected with the first feed pipe 141 by the second valve, and spill box 145 is arranged on the outside of dedusting funnel 143 and passes through overflow
Opening 1451 is connected with dedusting funnel 143, and 145 top of spill box is equipped with the ventilation of connection spill box 145 and aerosol chamber 146
Room 1455,145 bottom of spill box are connected with the second discharge pipe 1452 by the 3rd valve, and 145 side wall of spill box passes through
Four valves are connected with the second feed pipe 1453, and water level monitor 1454 is equipped with spill box 145.
In further scheme, dedusting funnel 143 is adjustable funnel, and inlet plenum 142 is adjustable air inlet room, dedusting
Funnel 143, which includes the cone fixed sidewall of both ends interconnection and cone adjustment side wall, inlet plenum, includes what both ends were connected with each other
Cylinder fixed sidewall and cylinder adjustment side wall, the upper end of cone adjustment side wall are connected with the lower end of cylinder adjustment side wall, cone tune
Whole side wall and cylinder adjustment side wall are extensible side wall, and cone adjustment side wall is connected with adjusting hand handle by supporting item.
Extensible side wall can be the extensible side wall of elasticity；Can also be non-resilient extensible side wall, such as extensible side
One end of wall is fixedly connected with one end of fixed sidewall, and the other end of extensible side wall can be moved relative to the other end of fixed sidewall
Move and sealing can be formed, can realize the stretching, extension of extensible side wall.Hand handle 1431 is adjusted by mobile, can drive to stretch
Open up side wall and elastic deformation or circumferential mobile occurs, so as to adjust 143 cross-sectional area of inlet plenum 142 and dedusting funnel, so that
When making same working face, 1421 gas flow rate of air inlet adjusts；Excavation face in coal mine dedusting system provided by the utility model
When the deduster of system is applied to different working faces, extensible side wall is adjusted, so as to fulfill 142 He of flexible modulation inlet plenum
The cross-sectional area of dedusting funnel 143 reaches the optimum speed of dust separation to adjust its internal throughput.
In further scheme, 143 bottom of dedusting funnel is connected with the first discharge pipe 1433 by the first valve, removes
143 side wall of dirt funnel is connected with the first feed pipe 141 by the second valve, and spill box 145 is arranged on outside dedusting funnel 143
Side is simultaneously connected by overflow openings 1451 with dedusting funnel 143, and it is gentle that 145 top of spill box is equipped with connection spill box 145
The breather chamber 1455 of fog chamber 146,145 bottom of spill box are connected with the second discharge pipe 1452, spill box by the 3rd valve
145 side walls are connected with the second feed pipe 1453 by the 4th valve, and water level monitor 1454 is equipped with spill box 145.
Spill box 145 is used for controlling the stability of water level and water level in dedusting funnel 143, on spill box 145
Breather chamber 1455 is set to make spill box 145 equal with 1455 pressure of aerosol chamber, overflow openings 1451 are located at dedusting funnel 143
In, the water in dedusting funnel 143 is connected with spill box 145 instead of susceptible to plugging overflow pipe with overflow openings 1451,
Water surface elevation in dedusting funnel 143 is reflected by spill box 145, if water level monitor 1454 monitors spill box
When water level in 145 is relatively low, control system is supplied water to ensure deduster by the second feed pipe 1453 into spill box 145
Constant level, so as to ensure the stabilization of efficiency of dust collection.
More specifically in scheme, inlet plenum 142 is that (its specific size need to be according to the reality of application site for 0.28m for radius
Situation determines) cylindrical cavity, for make enter deduster in gas be uniformly distributed in whole S types blade 144, air inlet
1421 should be higher by 144 certain altitude of S types blade, such as 0.5m；To prevent dedusting funnel 143 from blocking, it should be ensured that dedusting funnel 143
Angle it is appropriate big, the adjustable initial funnel angle of funnel is set to 55 °, depth 0.6m.
Air velocity reaches 18~30m/s, intake velocity one in clean room between blade 1441 and lower blade 1442
As be no more than 18m/s.To avoid corroding and using stainless steel, the shape of S types blade 144 easy to deashing, 144 material of S types blade
Necessary horizontal when S types blade 144 is installed and size is as shown in Figure 11 a, 11b, the blade combination after assembling is as shown in fig. 11c.
1451 perforate of overflow openings is designed as 100mm × 50mm or so, and the water level that controls of spill box 145 is 20mm, i.e.,
Downflow weir, which is higher by under blade 1441 along 20mm, water-level fluctuation, is no more than 5mm, for reduce water level fluctuation, the first feed pipe 141,
Second feed pipe 1453 and overflow openings 1451 are embedded in below control water level.
Using the above structure, after deduster is powered, deduster is washed by water to priming level, water by the first feed pipe 141
Position height is concordant with 1441 lower edge of blade, then starts exhaust fan 15.Dusty gas by air inlet 1421 flow into
Gas chamber 142, since gas mobile section expands, gas flow rate is slack-off, and large dust particle gravitational settling, rocket motor impacts downwards
Liquid level, evokes a large amount of water droplets and enters S types blade 144, aqueous vapor is sufficiently mixed, and tiny grit is captured.Air-flow flows out S from air passage
Enter aerosol chamber 146 after type blade 144, gas mobile section expands again, and speed reduces suddenly, and dust of water droplets drops water
In be captured by the water, gas continues up flowing, is sink to 143 bottom of dedusting funnel, and the grit being captured by the water is sink to dedusting funnel
143 bottoms, are periodically discharged by the first discharge pipe 1433.
Aerosol chamber 146 need not set water fender, reduce the pressure loss of aerosol chamber 146.146 cross section ruler of aerosol chamber
Very little to depend primarily upon filler chamber 147, being determined by experiment can make to roll and obtain optimal dedusting in filler chamber 147 above and below filler
Airflow velocity during efficiency, thus calculates cross-sectional area；146 cross-sectional area of aerosol chamber should be suitably big, can make ash-laden gas
The grit for being stained with big water droplet in stream has time enough to sink by Gravitative Loads since speed reduces (mobile section increase) suddenly
It is down in water.
In another specific scheme, filler dust removal part includes filler chamber 147, filling ball 1473, filler upper sieve plate
1472nd, sieve plate 1471 under filler, filler chamber 147 connect with aerosol chamber 146, and sieve plate 1471 divides under filler upper sieve plate 1472 and filler
The upper and lower ends of filler chamber 147 are not arranged on, and filler is positioned under filler upper sieve plate 1472 and filler between sieve plate 1471, filler
First jet 1474 is provided with upper sieve plate 1472.
More specifically in scheme, 147 barrel diameter of filler chamber is not less than 0.38m, and packing layer is selected on-fixed packing layer, filled out
The filler of the bed of material is shape made of the polypropylene material of diameter 38mm similar to the filling ball 1473 of QTL-150T.Filling ball heap
Put 4 layers, stack height 152mm, 1472 sieve plate spacing 456mm of sieve plate 1471 and filler upper sieve plate under filler, sieve plate under filler
1471 and filler upper sieve plate 1472 coral bar between size be all 20mm, filler upper sieve plate 1472 is using coral bar made of nylon yarn
Intercepting padding material ball 1473, sieve plate 1471 is using coral bar support filling ball 1473 made of alloy-steel wire under filler.First jet
1474 be high-pressure fog nozzle, filling ball 1473 is fully infiltrated, first jet 1474 is connected with the first auto spraying system
System.
Using the above structure, filler dust removal part carries the spray liquid of additive using first jet 1474 to filler spray
And the inertial collision of filler, interception, suction-operated, the rolling, mutually up and down under the action of air-flow of one side filling ball 1473
Wash away, the time of contact of dust and spray liquid can be increased, on the other hand, spray liquid wetting filler, shows shape in filling ball 1473
Into gas-liquid interface mass transfer, dirt effect is caught in increase.The dust being captured can also pass through the mutual collision of filling ball 1473 and spray liquid
Wash away and fall into dedusting funnel, the mutual collision of filling ball 1473 can also play the purpose of cleaning filling ball 1473, so that containing
Dust and gas body comes into full contact with solution and completes dust removal process.
In another specific scheme, wet type vibratory string grid dust removal part includes jet stream room 148, vibratory string grid 1410 and shakes
String bank tube road 1413, jet stream room 148 enter chamber and ejector 149 including gas, and ejector 149 includes Venturi tube 1491 and sets
The second nozzle 1492 in Venturi tube 1491 is put, Venturi tube 1491 includes being sequentially connected and integrally formed induction chamber
14911st, trunnion 14912 and diffuser 14913, the structure of vibratory string grid 1410 is as shown in figure 12, and gas enters chamber one end and filler
The upper end connection of room 147, the other end that gas enters chamber are connected with the induction chamber 14911 of Venturi tube 1491, Venturi tube 1491
Diffuser 14913 is connected with vibratory string bank tube road 1413, and second nozzle 1492 is connected with the second automatic spraying system, vibratory string bank tube road
Be equipped with multilayer vibratory string grid 1410 in 1413 one end being connected with the diffuser 14913 of Venturi tube 1491, it is front and rear be disposed adjacent shake
The vibratory string silk of string grid 1410 is orthogonal.
Along distinguished and admirable flow direction, vibratory string bank tube road 1413 is disposed with dedusting from front to back in the lower section of vibratory string grid 1410
Bucket 1411 and demisting bucket 1412；Vibratory string bank tube road 1413 and the link position of exhaust fan 15 are provided with wind turbine drainpipe
1414。
More specifically in scheme, 1410 cross section of vibratory string grid is designed as the circle that radius is 0.28m, vibratory string bank tube road 1413
Size will be slightly larger than 1410 size of vibratory string grid, radial design 0.29m.1410 filtering material of vibratory string grid selection diameter is 0.15
The alloy-steel wire of~0.2mm, vibratory string silk spacing are 1.5mm.1410 structure diagram of vibratory string grid as shown in figure 4, installation when, phase
Horizontal arrangement after the vibratory string silk of adjacent two pieces of vibratory string grid 1410 preceding will be indulged, makes the vibratory string silk on adjacent vibratory string grid 1410 orthogonal.Shake
1410 number of plies of string grid is 8 layers, while dust filtering, also plays a part of demisting, and dewatering part uses 1410 demisting of vibratory string grid,
In the link position of vibratory string bank tube road 1413 and exhaust fan 15, wind turbine drainpipe 1414 is set, prevent the water that air-flow is taken out of into
Enter exhaust fan 15.
Ejector 149 includes Venturi tube 1491 and the second nozzle 1492 that is arranged in Venturi tube 1491, pressure water stream from
Second nozzle 1492 is projected with flank speed, is made 14911 pressure of Venturi tube induction chamber reduce to form negative pressure volume suction dust laden air, is contained
There is an air-flow of smaller particle coal dust and drop is sufficiently mixed (grit in gas in Venturi tube aditus laryngis entrance and trunnion 14912
Larger particles are condensed into drop), gas liquid mixture is discharged by Venturi tube diffuser 14913, its speed slows down, and pressure increases
By force, strength injection stream is formed with whole sections of certain speed uniform fold vibratory string grid 1410, as shown in Figure 10.
Using the above structure, first before dust particles are contacted with vibratory string grid 1410, it is soaked by high-pressure fog, one
The larger dust particles in part are directly caught by water droplet, carry out rough dusting, and another part dust is captured by vibratory string grid 1410.When
When air containing dust flows through vibratory string grid 1410, dust runs into moisture film on vibratory string silk and intercepts and be detained, and vibratory string grid
1410 vibratory string silk produces high-frequency vibrations in airflow function, strengthens in water mist grain and dust laden air between dust particles
Cohesion, so as to improve the efficiency of seizing dust to fine dust.A part of dust is caught by the fluid film on vibratory string grid 1410
Obtain, then adsorbed by the water droplet on vibratory string silk, since self gravitation settles and accumulates current, moreover it is possible to play cleaning vibratory string grid
1410 effect.Moistening powder dust particle and water mist flow in dedusting bucket 1411 and demisting bucket 1412 respectively with current, purify
Air afterwards flows to exhaust fan 15.
First jet 1474 and second nozzle 1492 in filler chamber 147 and jet stream room 148 are respectively connected with a set of automatic spray
Mist system, automatic spraying system includes penstock, water filter, pressue device, measuring device and electrical ball valve, by water valve
Door, water filter, pressue device, measuring device, electrical ball valve and 1474/ second nozzle 1492 of first jet are via connecting tube
Road is sequentially connected, and due to installing sensor on electrical ball valve, automatic decision can be carried out to environment, when there is dust-contained airflow process
When, realization automatically controls spraying function.Measuring device uses the difunctional High-pressure watermeter of SGS types, and water filter uses GCQ-3
Type water filter, pressue device are pumped using BP-75/12 types mine spray, and each device is adopted using caliber for 25mm high-pressure rubber pipes
Connected with quick coupling connection mode.Second nozzle 1492 selects 2~4 SD304 Solid cone nozzles, and second sprays during use
Mouth 1492 makes water fogging, and is atomized again under the impact of high speed dusty gas stream after flowing out second nozzle 1492, so as to fulfill
Secondary-atomizing；First jet 1474 selects high-pressure fog nozzle, filling ball 1473 is fully infiltrated.
In deduster dust-contained airflow from inlet plenum 142, S types blade 144, aerosol chamber 146, filler chamber 147, jet stream room 148,
Vibratory string grid 1410, wind turbine drainpipe 1414 are flowed out through exhaust fan 15.The course of work is as follows：
1. dust-contained airflow enters inlet plenum 142 by air inlet 1421, gas section expands, and large dust particle is dropped due to speed
Low, gravitational settling, then turns, and due to inertial collision and centrifugation mechanism, part dust sinks to dedusting funnel 143, ash-laden gas
Body is slightly purified；
2. under the swabbing action of exhaust fan 15, the water level decreasing of gas approaching side, the water level rise of outflow side, contains
Dust and gas stream impact liquid level, evokes a large amount of water droplets and enters S types blade 144, and air water is sufficiently mixed, and a part of grit is fallen by water droplet adhesion
To dedusting funnel 143, a part of tiny grit flows through S types blade 144 since steering suddenly forms centrifugal force, and water droplet grit is got rid of
To dedusting funnel outer wall, dedusting funnel 143 is flowed to；
3. air-flow enters aerosol chamber 146 by the clean room for flowing through S types blade 144, gas flow area expands, and speed is unexpected
Reduce, part grit gravitational settling, gas flows upward to filler chamber 147 after purification；
4. first jet 1474 sprays downwards the spray liquid containing additive, revocable filling ball 1473 in filler chamber 147
Fully soaked by spray liquid, rolling, the constantly collision up and down under the action of gas impact of the filling ball 1473 through wetting, due to increasing
Added time of contact and the contact area of dust and spray liquid, small particle dust is captured, the dust on filling ball 1473 due to
The mutual collision washed away with filling ball 1473 of spray liquid falls into dedusting funnel 143；
5. second nozzle 1492 is gone out water flow jet by Venturi tube 1481, further using jet current principle, high velocity fog
Accelerate spraying and the inflow of 1410 interface dusty gas of vibratory string grid, part dust is collided, agglomerated, settled, and flows into water in dust removal
In bucket；
6. dust-contained airflow produces sound wave under vibratory string silk effect of vibration, is intercepted by vibratory string grid 1410 through vibratory string grid 1410
Accelerate dust particles to agglomerate at the same time, fall into dedusting bucket；
7. vibratory string grid 1410 while dust filtering, also play a part of demisting, especially Hou Ji roads vibratory string grid 1410, main
If in order to reach defogging effect, and it is set to fall into demisting bucket 1412；
8. being provided with wind turbine drainpipe 1414 in the link position of vibratory string bank tube road 1413 and exhaust fan 15, such as scheme
Shown in 13, discharge is collected to the remaining water droplet in air-flow, in case water droplet is brought into exhaust fan 15 and influences its workability
Energy.
The operation principle and process of excavation face in coal mine dust pelletizing system provided by the utility model are as follows：
(1) dirt is controlled：Forced wind turbine 1 produces distinguished and admirable into forced air duct 2, adds in forced 2 air outlet of air duct
Flexible wall-attached air duct 3 is filled, a distinguished and admirable part for forced air duct 2 blows to working face from taper air duct 31 with mode of jet, another
Spiral blow out forward of the distinguished and admirable guide duct 32 by strip in part reduces in the case where not changing the original air quantity of driving face
Wind speed at air duct 3 end air outlet, slow down development machine work caused by the speed that is spread to tunnel rear of dust
Degree so that substantial amounts of dust gathers in front of development machine driver position；At the same time from the distinguished and admirable edge that 3 guide duct 32 of air duct comes out
Wall, which is formed, has the helical form of certain kinetic energy distinguished and admirable, produces good wall attachment effect, suppresses dust from flying.This burst of helical form
Distinguished and admirable kinetic energy greatly increases under the collective effect for the axial velocity that the dust laden air that 11 inlet scoop of dust suction air duct sucks produces,
It can stop air curtain of the dust to external diffusion so as to be set up in front of development machine driver workspace, be effectively sealing off pick
Into dust caused by machine work, prevent dust from, to external diffusion, clean air ambient is provided for underground development machine driver.
(2) dust suction：Under the effect of exhaust fan 15, the dust suction air duct 11 being inserted into air curtain can be distinguished and admirable by dust-laden
Suck deduster 14, while the first dust hood 8, the second dust hood 9, the 3rd dust hood 10 directly by the cutting units 5 of development machine,
Shovel board 6 and scratch board conveyor and dust suction deduster 14 at the belt conveyor transhipment point main dust point of 7 grade fully mechanized workfaces,
Greatly increase the dust collection efficiency of fully mechanized workface.
(3) gather dust：Dust-laden is distinguished and admirable to enter deduster 14, and dust removal process is net successively from coarse granule, fine grained to subparticle
Change：Primary dust removing is self-excitation bathing dust removal part, and large dust particle is carried out with gravity mechanism, inertia mechanism, centrifugation mechanism
Trapping；Two-stage dust removal is filler dust removal part, with water-bath mechanism, spray mechanism trapping smaller particle dust；3-stage dust-removal is wet
Formula vibratory string grid high-effective dust-removing part, respirable dust is trapped with vibratory string grid high-effective dust-removing mechanism.The deduster is not easy to plug, and is easy to
Cleaning, has stable a, high dust collection efficiency, and it is big to handle air quantity, it is easy to maintenance the advantages that.
Apply specific case in the utility model to be set forth the principle and embodiment of the utility model, the above
The explanation of embodiment is only intended to help the method and its core concept for understanding the utility model；Meanwhile for the one of this area
As technical staff, according to the thought of the utility model, in specific embodiments and applications there will be changes.To sum up
Described, this specification content should not be construed as the limitation to the utility model.
Claims (10)
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| CN201720884473.1U CN207261034U (en) | 2017-07-20 | 2017-07-20 | Excavation face in coal mine dust pelletizing system |
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| CN201720884473.1U CN207261034U (en) | 2017-07-20 | 2017-07-20 | Excavation face in coal mine dust pelletizing system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107218074A (en) * | 2017-07-20 | 2017-09-29 | 中国矿业大学(北京) | Excavation face in coal mine dust pelletizing system |
| CN109113783A (en) * | 2018-08-25 | 2019-01-01 | 许明 | A kind of gas extraction device for an upper corner of a coal mining working face |
| CN109763819A (en) * | 2019-03-22 | 2019-05-17 | 中国石油大学(华东) | A dust removal device for a roadheader |
| CN111485930A (en) * | 2020-04-27 | 2020-08-04 | 山东科技大学 | A modularized air distribution device for a driving face and a method for forming a dust suppression air curtain |
| CN112253210A (en) * | 2020-10-23 | 2021-01-22 | 中煤科工集团重庆研究院有限公司 | An umbrella-shaped air curtain for air supply and dust control device for fully mechanized excavation working face of coal mine |
| CN115749904A (en) * | 2022-11-28 | 2023-03-07 | 铜陵有色设计研究院有限责任公司 | A dust removal ventilation device |
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2017
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107218074A (en) * | 2017-07-20 | 2017-09-29 | 中国矿业大学(北京) | Excavation face in coal mine dust pelletizing system |
| CN109113783A (en) * | 2018-08-25 | 2019-01-01 | 许明 | A kind of gas extraction device for an upper corner of a coal mining working face |
| CN109763819A (en) * | 2019-03-22 | 2019-05-17 | 中国石油大学(华东) | A dust removal device for a roadheader |
| CN111485930A (en) * | 2020-04-27 | 2020-08-04 | 山东科技大学 | A modularized air distribution device for a driving face and a method for forming a dust suppression air curtain |
| CN111485930B (en) * | 2020-04-27 | 2021-06-18 | 山东科技大学 | A modularized air distribution device for a driving face and a method for forming a dust suppression air curtain |
| CN112253210A (en) * | 2020-10-23 | 2021-01-22 | 中煤科工集团重庆研究院有限公司 | An umbrella-shaped air curtain for air supply and dust control device for fully mechanized excavation working face of coal mine |
| CN115749904A (en) * | 2022-11-28 | 2023-03-07 | 铜陵有色设计研究院有限责任公司 | A dust removal ventilation device |
| CN115749904B (en) * | 2022-11-28 | 2025-06-24 | 铜陵有色设计研究院有限责任公司 | Dust removal ventilation device |
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Granted publication date: 20180420 Termination date: 20190720 |