CN107218074A - Excavation face in coal mine dust pelletizing system - Google Patents

Excavation face in coal mine dust pelletizing system Download PDF

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Publication number
CN107218074A
CN107218074A CN201710596018.6A CN201710596018A CN107218074A CN 107218074 A CN107218074 A CN 107218074A CN 201710596018 A CN201710596018 A CN 201710596018A CN 107218074 A CN107218074 A CN 107218074A
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CN
China
Prior art keywords
dust
air duct
filler
dust shield
shield
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710596018.6A
Other languages
Chinese (zh)
Inventor
张江石
刘金锋
王亚萌
杨雪松
许培辉
张文越
赵群
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China University of Mining and Technology Beijing CUMTB
Original Assignee
China University of Mining and Technology Beijing CUMTB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by China University of Mining and Technology Beijing CUMTB filed Critical China University of Mining and Technology Beijing CUMTB
Priority to CN201710596018.6A priority Critical patent/CN107218074A/en
Publication of CN107218074A publication Critical patent/CN107218074A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F5/00Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F1/00Ventilation of mines or tunnels; Distribution of ventilating currents
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F1/00Ventilation of mines or tunnels; Distribution of ventilating currents
    • E21F1/04Air ducts
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F5/00Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
    • E21F5/02Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F5/00Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
    • E21F5/02Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying
    • E21F5/04Spraying barriers
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F5/00Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
    • E21F5/20Drawing-off or depositing dust

Abstract

The invention discloses a kind of excavation face in coal mine dust pelletizing system, including:The control dirt system of development machine side is arranged on, control dirt system includes forced blower fan, forced air duct and the air duct being sequentially connected;Dust collecting system, the first dust shield, the second dust shield and the 3rd dust shield and dust suction air duct, dust shield assembling case of dust of the dust collecting system including being respectively used at absorption cutting head of roadheader position, at blade position and at scratch board conveyor and belt conveyor transhipment point position, the first dust shield, the second dust shield, the 3rd dust shield and dust suction air duct assemble case with dust shield and are connected;The dust collecting system of development machine opposite side, including pull-out type air duct, deduster and the exhaust fan being sequentially connected are arranged on, pull-out type air duct is connected with dust shield assembling case.The excavation face in coal mine dust pelletizing system can effectively control dust in the diffusive transport of underworkings, and pick-up performance is good, and dust-collecting efficiency is high, can substantially reduce excavation face in coal mine dust concentration.

Description

Excavation face in coal mine dust pelletizing system
Technical field
The present invention relates to coal mine dedusting technical field, 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 is widely used, and pit mining intensity is increasing, and the dust yield of fully mechanized workface is anxious Increase severely and add, have a strong impact on the healthy of workman, threaten the safety in production of mine.China's condition of coal seam occurrence is complicated, production work Skill difference is very big, and especially underground fully mechanized workface has that dust yield is big, concentration is high, ventilation difficulty, greatly Amount dust is suspended in air, not only causes the reduction of working face visibility, and driving normal to tunnel is affected greatly, and right The healthy composition of operating personnel is seriously endangered, therefore, effectively the dust of control fully mechanized workface, 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, it is to avoid dust spreads to tunnel rear.But application dust-separation curtain, the closed dust collecting process of net can be to development machine driver sight and picks Enter machine operation and produce influence, the closed dust collecting process of air curtain also brings along noise pollution and influences the problems such as development machine is operated. 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, decentralization 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.
The content of the invention
It is an object of the invention to provide a kind of excavation face in coal mine dust pelletizing system, to solve above-mentioned prior art presence Problem, effectively controls dust in the diffusive transport of underworkings, pick-up performance is good, and dust-collecting efficiency is high, can substantially reduce colliery comprehensive Dig face dust concentration.
To achieve the above object, the invention provides following scheme:
The present invention 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 the press-in being sequentially connected Formula blower fan, forced air duct and air duct;
Dust collecting system, the dust collecting system include the first dust shield, the second dust shield, the 3rd dust shield, dust suction air duct and Dust shield assembles case, and first dust shield, the second dust shield and the 3rd dust shield are respectively used to draw cutting head of roadheader position Put place, the dust at shovel board of development machine position and at scratch board conveyor and belt conveyor transhipment point position, first dust suction Cover, second dust shield and the 3rd dust shield assemble case by airduct and the dust shield and are connected, the dust suction wind Cylinder is connected with dust shield assembling case;
And dust collecting system, the dust collecting system is arranged on the opposite side of development machine, and the dust collecting system includes connecting successively Pull-out type air duct, deduster and the exhaust fan connect, the pull-out type air duct is connected with dust shield assembling case.
It is preferred that, 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 arranged by line style, and guide duct air inlet and guide duct are provided with each guide duct Air outlet, the barrel of cylinder described in the guide duct air inlet insertion.
It is preferred that, the air intake and outlet air end of the cylinder 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.
It is preferred that, it is provided with the suction port of first dust shield, second dust shield and the 3rd dust shield Netted iron wire, the dust shield assembling case is provided with airduct, the wind of second dust shield respectively with first dust shield Set in the casing air inlet that pipe, the airduct of the 3rd dust shield are connected with the dust suction air duct, each casing air inlet It is equipped with deflector.
It is preferred that, self-excitation bathing dust removal part, filler dust removal unit and the wet type that the deduster includes being sequentially connected with are shaken String grid dust removal part, the self-excitation water-bath dust removal part is used to trap big dust particle, and the filler dust removal part is used to trap Smaller particle dust, the wet type vibratory string grid dust removal part is used to trap respirable dust.
It is preferred that, it is gentle that the self-excitation bathing dust removal part includes inlet plenum, dedusting funnel, S types blade, spill box Be provided with the air inlet being connected with the pull-out type air duct on fog chamber, the inlet plenum, 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 connected by overflow openings with the dedusting funnel, the spill box top The breather chamber of the spill box and the aerosol chamber is communicated with, the spill box bottom is connected with by the 3rd valve Two discharge pipes, spill box side wall is connected with the second feed pipe, the spill box by the 4th valve and is provided with water level Monitor.
It is preferred that, the dedusting funnel is adjustable funnel, and the inlet plenum is to be adjustable into air chamber, the dedusting funnel bag The cone fixed sidewall and cone adjustment side wall of two ends interconnection are included, the cylinder that the inlet plenum includes two ends interconnection is consolidated Determine side wall and cylinder adjustment side wall, the upper end of the cone adjustment side wall is connected with the lower end that the cylinder adjusts 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 support member Save hand handle.
It is preferred that, 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 above and below the filler chamber under the filler upper sieve plate and the filler Two ends, described filler layer is arranged under the filler upper sieve plate and the filler between sieve plate, is 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.
It is preferred that, the wet type vibratory string grid dust removal part includes jet room, vibratory string grid and vibratory string bank tube road, the jet room Enter chamber and ejector including gas, the ejector includes Venturi tube and the second nozzle being arranged in the Venturi tube, institute State Venturi tube include be sequentially connected and integrally formed induction chamber, trunnion and anemostat, 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 is connected with the induction chamber, the anemostat and the vibratory string Bank tube road is connected, and the second nozzle is connected with the second automatic spraying system, and the vibratory string bank tube road is connected with the anemostat One end in be provided with vibratory string grid described in multilayer, the front and rear vibratory string grid being disposed adjacent vibratory string silk it is orthogonal.
It is preferred that, along distinguished and admirable flow direction, the vibratory string bank tube road is set successively from front to back in the lower section of the vibratory string grid 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 blower fan draining Pipe.
The present invention achieves following technique effect relative to prior art:
The local ventilation mode for the excavation face in coal mine dust pelletizing system that the present invention is provided takes out ventilation for long pressure is short, to be pressed into Based on formula ventilation, the supporting mode of ventilation for installing air duct additional using forced air duct air outlet installs dust suction additional in each dust point Cover, assembles case with dust shield and each dust shield and dust suction air duct is combined into installation with pull-out type air duct, at the same using air duct and The mode of deduster matching, exhaust ventilation is equipped with deduster dedusting, be integrate control dirt, dust suction, closed removing of gathering dust Dirt system, from control dirt, dust suction, gathering dust effectively controls diffusive transport of the dust in underworkings in terms of three, substantially increases Dust suction, dust-collecting efficiency, greatly reduce face dust concentration, have received preferable dust-laying effect, eliminate in the course of work Potential safety hazard;The working environment of excavation face in coal mine is improved, operating efficiency is improved, underground labour is reduced and suffers from pneumoconiosis The possibility of disease, while being greatly reduced mechanical wear, improves instrument and equipment service life and precision.
It is distinguished and admirable into forced air duct that forced blower fan is produced, and flexible wall-attached wind is installed additional in forced air duct air outlet Cylinder, a distinguished and admirable part for forced air duct blows to working face from taper air duct with mode of jet, and another part is distinguished and admirable to pass through strip Guide duct spiral is 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 the dust produced during development machine work spreads to tunnel rear so that substantial amounts of dust is in pick Enter accumulation in front of machine driver position;Distinguished and admirable formed along wall come out simultaneously 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 is produced, 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 the dust produced during development machine work, prevented Only dust provides the air ambient of cleaning for underground development machine driver to external diffusion.
Under exhaust fan effect, the dust suction air duct in insertion air curtain can be by the distinguished and admirable suction deduster of dust-laden, together When the first dust shield, the second dust shield, the 3rd dust shield 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.
The distinguished and admirable entrance deduster of dust-laden, dust removal process is purified successively from coarse granule, fine grained to subparticle, includes multistage Dedusting:Primary dust removing is self-excitation water-bath dust removal part, and big 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 easily blocked, and is easy to Cleaning, with stable, efficiency of dust collection height, handles air quantity greatly, the advantages of easy to maintenance.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to these accompanying drawings Obtain other accompanying drawings.
Fig. 1 is the structural representation of excavation face in coal mine dust pelletizing system of the present invention
Fig. 2 is the main structure diagram of the air duct of excavation face in coal mine dust pelletizing system of the present invention.
Fig. 3 is Fig. 2 A-A sectional views;
Fig. 4 is the structural representation of the first dust shield of excavation face in coal mine dust pelletizing system of the present invention;
Fig. 5 is the structural representation of the second dust shield of excavation face in coal mine dust pelletizing system of the present invention;
Fig. 6 is the structural representation of the 3rd dust shield of excavation face in coal mine dust pelletizing system of the present invention;
Fig. 7 is that the dust shield of excavation face in coal mine dust pelletizing system of the present invention assembles the structural representation of case;
Fig. 8 is the structural representation of the deflector of excavation face in coal mine dust pelletizing system of the present invention;
Fig. 9 is the structural representation of the deduster of excavation face in coal mine dust pelletizing system of the present invention;
Figure 10 is the structural representation of the ejector of the deduster of excavation face in coal mine dust pelletizing system of the present invention;
Figure 11 a are the shape and chi of the S type blade blades of the deduster of excavation face in coal mine dust pelletizing system of the present invention Very little (mm) schematic diagram;
Figure 11 b are the shape and chi of the S type blade lower blades of the deduster of excavation face in coal mine dust pelletizing system of the present invention Very little (mm) schematic diagram;
Figure 11 c are the S type blade combination diagrams of the deduster of excavation face in coal mine dust pelletizing system of the present invention;
Figure 12 is the structural representation of the vibratory string grid of the deduster of excavation face in coal mine dust pelletizing system of the present invention;
Figure 13 is the blower fan drain structure schematic diagram of excavation face in coal mine dust pelletizing system of the present invention.
In figure:The forced blower fans of 1-;The forced air ducts of 2-;3- air ducts;The tapered air ducts of 31-;32- guide ducts;33- is led Airduct air outlet;34- air duct reducings;35- guide duct air inlets;36- cylinders;4- driver position;5- cutting head of roadheader;6- is dug Enter mechanical shovel plate;The reloading point of 7- scratch board conveyors and belt conveyer;The dust shields of 8- first;The dust shields of 9- second;10- the 3rd inhales Dust hood;101- dust-break curtains;11- dust suction air ducts;12- dust shields assemble case;121- casing air inlets;13- pull-out type air ducts;14- Deduster;The feed pipes of 141- first;142- inlet plenums;1421- air inlets;143- dedusting funnels;1431- adjusts hand handle;1432- Support member;The discharge pipes of 1433- first;144-S type blades;1441- blades;1442- lower blades;145- spill boxs;1451- Overflow openings;The discharge pipes of 1452- second;The feed pipes of 1453- second;1454- water level monitors;1455- breather chambers;146- aerosols Room;147- filler chamber;Sieve plate under 1471- fillers;1472- filler upper sieve plates;1473- filling balls;1474- first jets;148- Jet room;149- ejectors;1491- Venturi tubes;14911- induction chambers;14912- trunnions;14913- anemostats;1492- second Nozzle;1410- vibratory string grid;1411- dedusting buckets;1412- demisting buckets;1413- vibratory string bank tubes road;1414- blower fan drainpipes; 14141- deduster inner cylinders, 14142- blower fan outer cylinders, 14143- blower fan drainpipe drainage positions;15- exhaust fans.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made Embodiment, belongs to the scope of protection of the invention.
It is an object of the invention to provide a kind of excavation face in coal mine dust pelletizing system, to solve above-mentioned prior art presence Problem, can effectively control dust in the diffusive transport of underworkings, pick-up performance is good, and dust-collecting efficiency is high, can substantially reduce colliery Fully mechanized workface dust concentration.
In order to facilitate the understanding of the purposes, features and advantages of the present invention, it is below in conjunction with the accompanying drawings and specific real Applying mode, the present invention is further detailed explanation.
The present invention provides a kind of excavation face in coal mine dust pelletizing system, as shown in figure 1, including control dirt system, dust collecting system And dust collecting system, control dirt system is arranged on development machine side, forced blower fan 1 that control dirt system includes being sequentially connected, forced Air duct 2 and air duct 3;Dust collecting system includes the first dust shield 8, the second dust shield 9, the 3rd dust shield 10, dust suction air duct 11 Case 12 is assembled with dust shield, the first dust shield 8, the second dust shield 9 and the 3rd dust shield 10 are respectively used to draw tunneling machine cutting Dust at first 5 position, at the position of shovel board of development machine 6 and at 7 positions of scratch board conveyor and belt conveyor transhipment point, first inhales Dust hood 8, the second dust shield 9 and the 3rd dust shield 10 assemble case 12 by scalable airduct and dust shield and are connected, dust suction air duct 11 are connected with dust shield assembling case 12;Dust collecting system is arranged on the opposite side of development machine, and dust collecting system includes taking out for being sequentially connected Go out formula air duct 13, deduster 14 and exhaust fan 15, pull-out type air duct 13 is connected with dust shield assembling case 12.
The local ventilation mode of the excavation face in coal mine dust pelletizing system provided using said structure, the present invention selects to grow pressure It is short to take out ventilation, based on forced ventilation, install the supporting draft type of air duct 3 additional using the forced air outlet of air duct 2, Each dust point installs dust shield additional, and assemble case with dust shield combines installation by each dust shield with deduster air duct, while using attached wall The mode that air duct is matched with deduster, exhaust ventilation is equipped with deduster dedusting, is the envelope for integrating control dirt, dust suction, gathering dust Enclosed dust pelletizing system, from control dirt, dust suction, gathering dust effectively controls diffusive transport of the dust in underworkings in terms of three, significantly Dust suction, dust-collecting efficiency are improved, face dust concentration is greatly reduced, preferable dust-laying effect is have received, eliminates work During potential safety hazard;The working environment of excavation face in coal mine is improved, operating efficiency is improved, underground labour is reduced Suffer from the possibility of pneumoconiosis, while being greatly reduced mechanical wear, improve instrument and equipment service life and precision.
In specific scheme, forced distance of the blower fan 1 away from digging laneway is set to 15~20m, and forced air duct 2 is straight Footpath is the 800mm fire-retardant air duct of strength colloid, and each air duct interface is using double back-pressure sides, and straight hanging meets ring to hang;Press-in The nozzle of formula air duct 2 certain distance behind scratch board conveyor and belt conveyor transhipment point 7, the distance met head on away from development end is set to 10~15m, forced air duct 2 overlaps segment length with pull-out type air duct 13 and is set to 10~20m;The forced press-in of blower fan 1 air quantity will Air quantity is extracted out more than exhaust fan 15, it is ensured that is had distinguished and admirable flowing in superposition section and is not produced circulated air in the section, it is forced The air quantity Q of air duct 2PressureWith the suction air volume Q of deduster 14Take outRelation be QPressure=(1.2~1.3) QTake out
As a preferred embodiment, as shown in Figure 2 and Figure 3, the excavation face in coal mine dedusting system that the present invention is provided The above-mentioned air duct 3 of system includes cylinder 36 and is arranged on multiple guide ducts 32 on the side wall of cylinder 36, and guide duct 32 is led for strip Airduct, guide duct 32 along the lateral wall of cylinder 36, helically arranged by line style, and guide duct air inlet 35 is provided with guide duct 32 and is led Airduct air outlet 33, the barrel of the insertion cylinder 36 of guide duct air inlet 35.
Air duct 3 in the present invention can change the axial direction in the distinguished and admirable air-out direction of forced air duct, forced air duct 2 A distinguished and admirable part blows to working face from taper air duct 31 with mode of jet, and another part passes through the guide duct 32 of strip spiral forward 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 and comprehensive The front of pick machine driver position forms air curtain dust-separation area, prevents dust from being spread to tunnel rear, not only with good control dirt effect, And be conducive to dispersing 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 the forced air outlet of air duct 2, by adjust taper air duct 31 blowing mouth diameter be sized to adjust Allocation of the amount of air is saved, allocation of the amount of air is adjusted according to actual needs so as to realize.
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 is determined) flexible wall-attached air duct, guide duct 32 is flexible guide duct and 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, the excavation face in coal mine dedusting system that the present invention is provided Netted iron wire, dust shield assembling are provided with the suction port of the first dust shield 8, the second dust shield 9 and the 3rd dust shield 10 united Case is provided with airduct, the airduct of the second dust shield 9, the airduct and dust suction wind of the 3rd dust shield 10 respectively with the first dust shield 8 Deflector is provided with the casing air inlet 121 that cylinder 11 is connected, each casing air inlet 121.
In specific scheme, the first dust shield 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 the center of the first dust shield 8 airduct to be suitably lower than development machine cut Arm is cut, the cover mouth of the first dust shield 8 is vertically arranged with cutting head of roadheader, assembling case 12 by scalable airduct and dust shield is connected Connect;Second dust shield 9 is arranged in shovel board of development machine 6 (transferring mechanism) close to dust collecting system side, the cover mouth of the second dust shield 9 and pick Enter mechanical shovel plate 6 arranged in parallel, assembling case 12 by scalable airduct and dust shield is connected;3rd dust shield 10 is arranged in scraper plate Reloading point 7 (Zhuan Liu mechanisms) top of transporter and belt conveyer, assembles case 12 by scalable airduct and dust shield and is connected Connect;The connection dust shield assembling case 12 of dust suction air duct 11, the dust shield assembling connection pull-out type of case 12 air duct 13.
More specifically in scheme, the first dust shield 8 is to have side rectangle dust shield, wide 0.4m, long 0.8m, controlled wind speed Vc= 2m/s, away from boring head 0.2m;Second dust shield 9 is has side rectangle dust shield, and wide 0.3m, long 0.6m, apart from dirt source 0.2m, are controlled Wind speed V processedc=1.5m/s;3rd dust shield 10 is semi-hermetic dust shield, wide 0.7m at opening, long 0.7m, at dust suction cover opening Cross-sectional area A=0.49m2, the formation semi-enclosed space of dust-break curtain 101 of particular design, controlled wind speed V are installedc=1.0m/s; Deflector is arranged at the casing air inlet 121 that dust shield assembling case 12 is connected with the airduct and dust suction air duct 11 of each dust shield, Can adjust the allocation of the amount of air of each airduct and dust suction air duct 11 by adjusting deflector air-out area, it is possible to achieve suction air volume it is many Level multistage regulation, dust suction direction and wind speed size can be controlled at any time;The netted iron wire arranged in each dust shield suction port, can Prevent block dust granules along cover mouth enter dust shield 12, it is to avoid dust suction, gather dust during device block, while also avoiding The wasting of resources.
As a preferred embodiment, as shown in Fig. 1, Fig. 9, the excavation face in coal mine dedusting system that the present invention is provided The deduster of system is to integrate water-bath, filler, ejector, the efficient composite wet scrubber of vibratory string grid, and it is included sequentially Self-excitation bathing dust removal part, filler dust removal part and the wet type vibratory string grid dust removal part of connection.
Above-mentioned deduster includes multistage dedusting, and dust removal process is purified successively from coarse granule, fine grained to subparticle:One-level Dedusting is self-excitation bathing dust removal part, and big 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 can not meet the narrow space of underground coal mine, special technical conditions and for into The problem of this requirement;The deduster for the excavation face in coal mine dust pelletizing system that the present invention is provided is not easily blocked, and is easy to cleaning, tool Have stable, efficiency of dust collection is high, processing air quantity is big, the advantages of easy to maintenance.
In specific scheme, self-excitation bathing dust removal part include inlet plenum 142, dedusting funnel 143, S types blade 144, The air inlet 1421 being connected with deduster air duct 13, inlet plenum are provided with spill box 145 and aerosol chamber 146, 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 it Between form clean room;The bottom of dedusting funnel 143 is connected with the first discharge pipe 1433, the side wall of dedusting funnel 143 by the first valve First feed pipe 141 is connected with by the second valve, spill box 145 is arranged on the outside of dedusting funnel 143 and opened by overflow Mouth 1451 is connected with dedusting funnel 143, and the top of spill box 145 is communicated with the breather chamber of spill box 145 and aerosol chamber 146 1455, the bottom of spill box 145 is connected with the second discharge pipe 1452 by the 3rd valve, and the side wall of spill box 145 passes through the 4th Valve, which is connected with the second feed pipe 1453, spill box 145, is provided with water level monitor 1454.
In further scheme, dedusting funnel 143 is adjustable funnel, and inlet plenum 142 is adjustable air inlet room, dedusting Funnel 143 includes the cone fixed sidewall and cone adjustment side wall that two ends are connected with each other, and inlet plenum includes what two 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 that cylinder adjusts side wall, and cone is adjusted Whole side wall and cylinder adjustment side wall are extensible side wall, and cone adjusts side wall and is connected with regulation hand handle by support member.
Extensible side wall can be elastic extensible side wall;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, i.e., can realize the stretching, extension of extensible side wall.By mobile regulation hand 1431, can drive to stretch Open up side wall and occur elastic deformation or circumferential mobile, so as to adjust inlet plenum 142 and the cross-sectional area of dedusting funnel 143, so that When making same working face, the gas flow rate of air inlet 1421 can adjust;The excavation face in coal mine dust pelletizing system that the present invention is provided When deduster is applied to different working faces, extensible side wall is can adjust, so as to realize flexible modulation inlet plenum 142 and dedusting leakage The cross-sectional area of bucket 143 reaches the optimum speed of dust separation to adjust the throughput that it is internal.
In further scheme, the bottom of dedusting funnel 143 is connected with the first discharge pipe 1433, dedusting by the first valve The side wall of funnel 143 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 simultaneously Connected by overflow openings 1451 with dedusting funnel 143, the top of spill box 145 is communicated with spill box 145 and aerosol chamber 146 breather chamber 1455, the bottom of spill box 145 is connected with the second discharge pipe 1452, the side of spill box 145 by the 3rd valve Wall is connected with the second feed pipe 1453, spill box 145 by the 4th valve and is provided with water level monitor 1454.
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 the pressure of aerosol chamber 1455, 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 radius (its specific size need to be according to the reality of application site for 0.28m Situation determine) cylindrical cavity, for make enter deduster in gas be uniformly distributed in whole S types blade 144, air inlet 1421 The certain altitude of S types blade 144, such as 0.5m should be higher by;To prevent dedusting funnel 143 from blocking, it should be ensured that the angle of dedusting funnel 143 Degree is appropriate big, and 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 being easy to deashing, the material of S types blade 144 uses stainless steel, the shape of S types blade 144 And size is as shown in Figure 11 a, 11b, necessary level when S types blade 144 is installed, the blade combination after assembling is as shown in fig. 11c.
The perforate of overflow openings 1451 is designed as 100mm × 50mm or so, and the controlling water level of spill box 145 is 20mm, i.e., Downflow weir is higher by under blade 1441 along 20mm, and water-level fluctuation is no more than 5mm, to reduce water level fluctuation, the first feed pipe 141, Second feed pipe 1453 and overflow openings 1451 are embedded in below controlling water level.
Using said 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 the lower edge of blade 1441, then starts exhaust fan 15.Dusty gas by air inlet 1421 flow into Air chamber 142, because gas mobile section expands, gas flow rate is slack-off, and big dust particle gravitational settling, rocket motor impacts downwards Liquid level, evokes a large amount of water droplets into S types blade 144, aqueous vapor is sufficiently mixed, and tiny grit is captured.Air-flow flows out S types from air channel Enter aerosol chamber 146 after blade 144, gas mobile section expands again, and speed is reduced suddenly, and dust of water droplets drops in water It is captured by the water, gas continues up flowing, is sink to the bottom of dedusting funnel 143, and the grit being captured by the water is sink to dedusting funnel 143 Bottom, passes through the first periodically discharge of discharge pipe 1433.
Aerosol chamber 146 need not set water fender, reduce the pressure loss of aerosol chamber 146.The cross sectional dimensions of aerosol chamber 146 Filler chamber 147 is depended primarily on, being determined by experiment can make to roll and obtain optimal dedusting effect in filler chamber 147 above and below filler Airflow velocity during rate, thus calculates cross-sectional area;The cross-sectional area of aerosol chamber 146 should be suitably big, can make dust-contained airflow In the grit for being stained with big water droplet due to speed reduce suddenly (mobile section increase) have time enough by Gravitative Loads settle Into 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 connects with aerosol chamber 146,1471 points of sieve plate 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, the barrel diameter of filler chamber 147 is not less than 0.38m, and packing layer is selected on-fixed packing layer, filled out The filling ball 1473 for the similar QTL-150T of shape that the filler of the bed of material is made for diameter 38mm polypropylene material.Filling ball is stacked 4 layers, stack sieve plate 1471 under sieve plate 1471 and the sieve plate spacing 456mm of filler upper sieve plate 1472 under height 152mm, filler, filler Size between the coral bar of filler upper sieve plate 1472 is all 20mm, and the coral bar that filler upper sieve plate 1472 is made of nylon yarn is intercepted The coral bar support filling ball 1473 that sieve plate 1471 is made of alloy-steel wire under filling ball 1473, filler.First jet 1474 is High-pressure fog nozzle, allows filling ball 1473 fully to infiltrate, and first jet 1474 is connected with the first automatic spraying system.
Using said structure, filler dust removal part sprays the spray liquid with additive using first jet 1474 to filler And the inertial collision of filler, interception, suction-operated, the rolling, mutually up and down in the presence 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 be by filling ball 1473 mutual collision 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 fully contacts completion dust removal process with solution.
In another specific scheme, wet type vibratory string grid dust removal part includes jet room 148, vibratory string grid 1410 and vibratory string Bank tube road 1413, jet room 148 includes gas and enters chamber and ejector 149, and ejector 149 includes Venturi tube 1491 and is arranged on Second nozzle 1492 in Venturi tube 1491, Venturi tube 1491 includes being sequentially connected and integrally formed induction chamber 14911, trunnion 14912 and anemostat 14913, as shown in figure 12, gas enters chamber one end and the upper end of filler chamber 147 to the structure of vibratory string grid 1410 Connection, the other end that gas enters chamber is connected with the induction chamber 14911 of Venturi tube 1491, the anemostat 14913 of Venturi tube 1491 It is connected with vibratory string bank tube road 1413, second nozzle 1492 is connected with the second automatic spraying system, vibratory string bank tube road 1413 and Wen Multilayer vibratory string grid 1410 are provided with one end that the anemostat 14913 of pipe 1491 is connected, the front and rear vibratory string grid 1410 being disposed adjacent Vibratory string silk 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 blower fan drainpipe 1414。
More specifically in scheme, the cross section of vibratory string grid 1410 is designed as the circle that radius is 0.28m, vibratory string bank tube road 1413 Size will be slightly larger than the size of vibratory string grid 1410, and radial design is 0.29m.The filtering material of vibratory string grid 1410 selection diameter is 0.15~ 0.2mm alloy-steel wire, vibratory string silk spacing is 1.5mm.The structural representation of vibratory string grid 1410 as shown in figure 4, install when, adjacent two Horizontal arrangement after the vibratory string silk of block vibratory string grid 1410 preceding will be indulged, makes the vibratory string silk on adjacent vibratory string grid 1410 orthogonal.Vibratory string grid 1410 numbers of plies are 8 layers, while dirt is filtered, and also play a part of demisting, dewatering part uses the demisting of vibratory string grid 1410, in vibratory string Bank tube road 1413 and the link position of exhaust fan 15 set blower fan drainpipe 1414, prevent the water that air-flow is taken out of from entering extraction Formula blower 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 the pressure of Venturi tube induction chamber 14911 reduce to form negative pressure volume suction dust laden air, is contained The air-flow and drop for having smaller particle coal dust are 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 anemostat 14913, and 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 said structure, first before dust granules are contacted with vibratory string grid 1410, it is soaked by high-pressure fog, one The larger dust granules 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 the upper moisture film of 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 smoke grain and dust laden air between dust granules 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, because self gravitation is settled and accumulates current, moreover it is possible to play cleaning vibratory string grid 1410 effect.Moistening powder dust particle and water smoke are flowed in dedusting bucket 1411 and demisting bucket 1412 respectively with current, are purified Air flow exhaust fan 15 afterwards.
First jet 1474 and second nozzle 1492 in filler chamber 147 and jet room 148 are respectively connected with a set of automatic spray Mist system, automatic spraying system includes penstock, water filter, pressue device, measurement apparatus and electrical ball valve, by water valve Door, water filter, pressue device, measurement apparatus, electrical ball valve and the second nozzle 1492 of first jet 1474/ are via connecting tube Road is sequentially connected, due to install 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.Measurement apparatus uses the difunctional High-pressure watermeter of SGS types, and water filter uses GCQ-3 types Water filter, pressue device uses BP-75/12 type mine spray pumps, and each device is used using caliber for 25mm high-pressure rubber pipes Snap joint connected mode is connected.Second nozzle 1492 is from 2~4 SD304 Solid cone nozzles, second nozzle when using 1492 make water fogging, and are atomized again under the impact of high speed dusty gas stream after outflow second nozzle 1492, so as to realize two Secondary atomization;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 room 148, Vibratory string grid 1410, blower fan drainpipe 1414 flow out through exhaust fan 15.The course of work is as follows:
1. dust-contained airflow enters inlet plenum 142 by air inlet 1421, and gas section expands, and big dust particle is dropped due to speed Low, then gravitational settling 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 into S types blade 144, 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 because steering suddenly forms centrifugal force, water droplet grit get rid of to Dedusting funnel outer wall, flows to dedusting funnel 143;
3. air-flow enters aerosol chamber 146 by the clean room for flowing through S types blade 144, and gas flow area expands, and speed is unexpected Reduction, 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 in the presence 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, and using jet current principle, high velocity fog is further Accelerate spraying and the inflow of the interface dusty gas of vibratory string grid 1410, part dust is collided, condensed, settled, and flows into water in dust removal In bucket;
6. dust-contained airflow produces sound wave under vibratory string silk effect of vibration, intercepted by vibratory string grid 1410 through vibratory string grid 1410 Accelerate dust granules cohesion simultaneously, fall into dedusting bucket;
7. vibratory string grid 1410 also play a part of demisting, especially Hou Ji roads vibratory string grid 1410, mainly while dirt is filtered It is to remove fog effect to reach, and it is fallen into demisting bucket 1412;
8. the link position of vibratory string bank tube road 1413 and exhaust fan 15 is provided with blower fan drainpipe 1414, such as Figure 13 It is shown, discharge is collected to the remaining water droplet in air-flow, in case water droplet is brought into exhaust fan 15 and influences its service behaviour.
The operation principle and process for the excavation face in coal mine dust pelletizing system that the present invention is provided are as follows:
(1) dirt is controlled:It is distinguished and admirable into forced air duct 2 that forced blower fan 1 is produced, and is installed additional in the forced air outlet of air duct 2 Flexible wall-attached air duct 3, a distinguished and admirable part for forced air duct 2 blows to working face, another portion from taper air duct 31 with mode of jet Divide the distinguished and admirable spiral of guide duct 32 by strip to blow out forward to reduce in the case where not changing the original air quantity of driving face Wind speed at the end air outlet of air duct 3, slow down the speed that the dust produced during development machine work spreads to tunnel rear, So that substantial amounts of dust is gathered in front of development machine driver position;Simultaneously from the guide duct 32 of air duct 3 come out it is distinguished and admirable along lane Helical form of the road wall formation with certain kinetic energy is distinguished and admirable, produces good wall attachment effect, suppresses dust from flying.This strand of helical form wind The kinetic energy of stream is greatly increased under the collective effect for the axial velocity that the dust laden air that the inlet scoop of dust suction air duct 11 is sucked is produced, from And can be set up in front of development machine driver workspace can stop air curtain of the dust to external diffusion, driving has been effectively sealing off The dust that machine is produced when working, prevents dust from, to external diffusion, the air ambient of cleaning is provided for underground development machine driver.
(2) dust suction:Under the effect of exhaust fan 15, the dust suction air duct 11 in insertion air curtain can be distinguished and admirable by dust-laden Deduster 14 is sucked, while the first dust shield 8, the second dust shield 9, the 3rd dust shield 10 are directly by the cutting units 5 of development machine, shovel Plate 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 The earth improves the dust collection efficiency of fully mechanized workface.
(3) gather dust:The distinguished and admirable entrance deduster 14 of dust-laden, 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 big 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 easily blocked, and is easy to Cleaning, with stable, efficiency of dust collection height, handles air quantity greatly, the advantages of easy to maintenance.
Specific case is applied in the present invention to be set forth the principle and embodiment of the present invention, above example Illustrate the method and its core concept for being only intended to help to understand the present invention;Simultaneously for those of ordinary skill in the art, according to According to the thought of the present invention, it will change in specific embodiments and applications.In summary, this specification content It should not be construed as limiting the invention.

Claims (10)

1. a kind of excavation face in coal mine dust pelletizing system, it is characterised in that:Including:
Dirt system is controlled, the control dirt system is arranged on development machine side, and the control dirt system includes the forced wind being sequentially connected Machine, forced air duct and air duct;
Dust collecting system, the dust collecting system includes the first dust shield, the second dust shield, the 3rd dust shield, dust suction air duct and dust suction Cover assembling case, first dust shield, the second dust shield and the 3rd dust shield be respectively used to draw at cutting head of roadheader position, Dust at shovel board of development machine position and at scratch board conveyor and belt conveyor transhipment point position, first dust shield, institute State the second dust shield and the 3rd dust shield to be connected by airduct and dust shield assembling case, the dust suction air duct and institute State dust shield assembling case connection;
And dust collecting system, the dust collecting system is arranged on the opposite side of development machine, and the dust collecting system includes what is be sequentially connected Pull-out type air duct, deduster and exhaust fan, the pull-out type air duct are connected with dust shield assembling case.
2. excavation face in coal mine dust pelletizing system according to claim 1, it is characterised in that:The air duct includes cylinder Body and the multiple guide ducts being arranged on the cylinder lateral wall, each guide duct is along the cylinder lateral wall helically line style cloth Put, guide duct air inlet and guide duct air outlet, cylinder described in the guide duct air inlet insertion are provided with each guide duct The barrel of body.
3. excavation face in coal mine dust pelletizing system according to claim 2, it is characterised in that:The air intake of the cylinder and Outlet air end is connected to air duct reducing and taper air duct, and the taper air duct and the air duct reducing are with the cylinder can Dismounting connection.
4. excavation face in coal mine dust pelletizing system according to claim 1, it is characterised in that:First dust shield, institute Netted iron wire is provided with the suction port for stating the second dust shield and the 3rd dust shield, the dust shield assembling case, which is provided with, to be divided Airduct, the airduct of second dust shield, the airduct of the 3rd dust shield and the dust suction not with first dust shield Deflector is provided with the casing air inlet that air duct is connected, each casing air inlet.
5. excavation face in coal mine dust pelletizing system according to claim 1, it is characterised in that:The deduster is included sequentially Self-excitation bathing dust removal part, filler dust removal part and the wet type vibratory string grid dust removal part of connection, the self-excitation bathing dedusting Part is used to trap big dust particle, and the filler dust removal part is used to trap smaller particle dust, and the wet type vibratory string grid are removed Dirt part is used to trap respirable dust.
6. excavation face in coal mine dust pelletizing system according to claim 5, it is characterised in that:The self-excitation bathing dedusting Part includes being provided with and the pull-out type on inlet plenum, dedusting funnel, S types blade, spill box and aerosol chamber, the inlet plenum The air inlet of air duct connection, the inlet plenum and the aerosol chamber are and described close to being disposed side by side on above the dedusting funnel Inlet plenum and the aerosol chamber are connected with the dedusting funnel;The S types blade is horizontally disposed in the inlet plenum and described Between aerosol chamber and above the dedusting funnel, the S types blade includes blade and lower blade, upper leaf piece and institute State and form clean room between lower blade;The dedusting funnel bottom is connected with the first discharge pipe, the dedusting by the first valve Hopper side walls are connected with the first feed pipe by the second valve;The spill box is arranged on the outside of the dedusting funnel and passed through Overflow openings are connected with the dedusting funnel, and the spill box top is communicated with the spill box and the aerosol chamber Breather chamber, the spill box bottom is connected with the second discharge pipe by the 3rd valve, and spill box side wall passes through the 4th Valve, which is connected with the second feed pipe, the spill box, is provided with water level monitor.
7. excavation face in coal mine dust pelletizing system according to claim 6, it is characterised in that:The dedusting funnel is adjustable Formula funnel, the inlet plenum is is adjustable into air chamber, and the dedusting funnel includes the cone fixed sidewall and cone that two ends are connected with each other Body adjusts side wall, and the inlet plenum includes the cylinder fixed sidewall and cylinder adjustment side wall that two ends are connected with each other, and the cone is adjusted The lower end that the upper end of whole side wall adjusts side wall with the cylinder is connected, and the cone adjustment side wall and cylinder adjustment side wall are Extensible side wall, the cone adjustment side wall is connected with regulation hand handle by support member.
8. excavation face in coal mine dust pelletizing system according to claim 5, it is characterised in that:The filler dust removal unit subpackage Sieve plate under filler chamber, packing layer, filler upper sieve plate, filler is included, the filler chamber connects with the aerosol chamber, sieved on the filler Sieve plate is separately positioned on the upper and lower ends of the filler chamber under plate and the filler, and described filler layer is arranged on the filler and sieved Under plate and the filler between sieve plate, first jet is provided with the filler upper sieve plate, the first jet is high-pressure fog Nozzle, the first jet is connected with the first automatic spraying system.
9. excavation face in coal mine dust pelletizing system according to claim 5, it is characterised in that:The wet type vibratory string grid dedusting Part includes jet room, vibratory string grid and vibratory string bank tube road, and the jet room includes gas and enters chamber and ejector, the ejector Including Venturi tube and the second nozzle being arranged in the Venturi tube, the Venturi tube includes being sequentially connected and integrally formed suction Air chamber, trunnion and anemostat, the gas are connected into chamber one end with the upper end of the filler chamber, and the gas enters the another of chamber One end is connected with the induction chamber, and the anemostat is connected with the vibratory string bank tube road, and the second nozzle is connected with second certainly Vibratory string grid described in multilayer are provided with dynamic spraying system, one end that the vibratory string bank tube road is connected with the anemostat, it is front and rear adjacent The vibratory string silk of the vibratory string grid set is orthogonal.
10. excavation face in coal mine dust pelletizing system according to claim 9, it is characterised in that:Along distinguished and admirable flow direction, institute State vibratory string bank tube road and be disposed with dedusting bucket and demisting bucket from front to back in the lower section of the vibratory string grid;The vibratory string grid The link position of pipeline and the exhaust fan is provided with blower fan drainpipe.
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