CN102269012B - Process and equipment for increasing block coal rate - Google Patents
Process and equipment for increasing block coal rate Download PDFInfo
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- CN102269012B CN102269012B CN201110188279.7A CN201110188279A CN102269012B CN 102269012 B CN102269012 B CN 102269012B CN 201110188279 A CN201110188279 A CN 201110188279A CN 102269012 B CN102269012 B CN 102269012B
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Abstract
The invention relates to a process and equipment for coal mine production, in particular to a process and equipment for increasing block coal rate. The technical problem of reduced block coal rate resulted from the disadvantages of fully mechanized coal mining equipment, in particular the process matched design of a crusher and an elevating conveyor, in the coal mine underground mining process is solved. The process is characterized by comprising the following steps: a coal block and slack coal mixture body obtained by cutting through a coal mining machine is sorted through a screening device; the block coal not less than 200 mm is sorted and delivered out of the rear section of the screening device and is conveyed away by bypassing the crusher; large block coal to be crushed is fed to the crusher to be crushed and then is conveyed to a main conveying belt through the elevating conveyor; the sorted mixed coal less than 200 mm is conveyed to the outlet of the crusher through a sorting conveying section by bypassing the crusher, fed to the front section of the elevating conveyor, delivered to the main conveying belt, and then conveyed to a place aboveground; and the whole process of sorting, crushing and conveying is completed. The block rate of the coal with the diameter of 13-200 mm is comprehensively increased by 5-6%.
Description
Technical field
The present invention relates to a kind of coal production technique and device, be specially a kind of raising block coal rate technique and equipment thereof.
Background technology
In recent years, the most of large coal mine of China is produced and has been stepped into mechanical coal mining a large amount of utilizations in period, particularly fully-mechanized mining equipment, and huge contribution has been made in demand and the economic development of coal production straight line rising ，Wei China energy.Mining performing comprehensive coal mining equipment is mainly used in coal production process, as broken coal, main by flitting realization, coaling, by drag conveyor, coal is advanced to scraper-trough conveyer (drag conveyor), fortune coal to transfer conveyor tail unloads, after crusher in crushing coarse coal, by elevating conveyor, coal is transported on conveyor again, finally arrive district coal bin, main road haulage, is then lifted out well, and face timbering and roof control are completed by hydraulic support, and provide personnel equipment's working space, the last goaf of effectively processing.Concrete condition can be understood from fully-mechanized mining working apparatus arrangement schematic diagram.No matter and all can there are two kinds of products of lump coal and foam coal in which kind of coal winning technology.But the technology such as adopt with respect to traditional big gun, the excavated technology of mechanization, improved digging efficiency, but can cause piece rate relatively to decline simultaneously, in coal sales market, due to the difference of the ingredient requirement in suitability for industrialized production, cause the price of lump coal and foam coal to have a certain distance, ton price gap hundreds of unit is not etc.So the ratio of lump coal and foam coal directly affects economic benefit and the cost benefit in colliery.Jincheng Anthracite Mining Group responsibility Co., Ltd for example, one has the large-scale anthracite enterprise that produces 50000000 tons of coals per year, with regard to piece rate, be lost in more than 5 percent, the loss that we can calculate it is worth, 50000000*5%=2500000 ton lump coal, if calculate ，Quan company by 350 yuan of above RMB of lump coal increment per ton, can increase by 8.75 hundred million yuans of the output values.The income from sales that is equivalent to increase a large-scale mine, economic benefit is surprising, if solved this technical barrier, economic benefit is considerable.
So national Ge great pays much attention in colliery the problem that improves lump coal rate, at present the technical data of getable raising lump coal rate more, for example, in " improve the discussion of lump coal productivity ratio and put into practice " literary composition, the several measure that prevents coal crusher has been proposed, as the improvement design to coal mining machine roller pick, the anti-sharp impacts of coal store is improved design, transportation transshipmenting tache reduces impact improvement design, before entering coal washing link, carry out the sorting before crushing engine, foam coal is rejected, 200 millimeters sort out will be greater than again, enter crushing engine, be less than 200 millimeters directly enter coal washer, make like this coal cinder that portion size is suitable no longer pass through crushing engine, thereby saved energy consumption." coal preparation technology ", the fourth phase in 2007, reduce lump coal breaking and cross measure one literary composition of degradation rate, also point out, mechanical system to the crushing engine before washed coal is transformed, and improves its grading function, makes to meet the requirements of coal cinder and discharges in time, thereby the problem that reduces overcrushing, has also improved the lump coal rate after fragmentation indirectly.The technician of our company studies rear discovery, and it is broken that the thinking of traditional raising lump coal rate is still confined to down-hole protecting against shock, the technology set pattern of aboveground sorting.
Field observation through technician is measured, China's coal-mine is produced all with fully-mechanized mining working and high-seam working face, the mode of production that do mechanization operation flow process is very high is produced coal, broken link after coal cutting completes, use the size distribution situation of the coal cinder recording after cutting coal machine coal breakage: the fine coal that diameter is less than 6 millimeters, foam coal (6-13mm), small-sized lump coal (13-25mm), medium-sized lump coal (25-80), large-scale lump coal (80-250).Use traditional transportation breaker, as 200910227874.X self-moving reversed loader, resulting foam coal (6-13mm), small-sized lump coal (13-25mm), medium-sized lump coal (25-80), large-scale lump coal (80-250), the total piece rate of 13-200 millimeter is about 60%.Trace it to its cause is in broken bulk process, because of its big-and-middle fritter and the use of foam coal is an operation passage, so cause the loss of piece rate serious, from source, just make lump coal rate decline, no matter how follow-up link makes great efforts, lump coal rate also can only remain on certain level, and economic benefit can not get effective performance, a lot of years out in the cold of this link.
Summary of the invention
The present invention is in order to solve under coal mine fully-mechanized mining equipment in mining process, the technical problem that refers in particular to the deficiency of crushing engine and the existence of elevating conveyor flow process matching design and cause lump coal rate to reduce, and provide a kind of raising block coal rate technique and exploiting field thereof early stage coal separation equipment.
The present invention is realized by following technical scheme, a kind of raising block coal rate technique, step feature is the coal cinder foam coal mixture process screening plant sorting that coal-winning machine coal cutting obtains, the lump coal separation that is not less than 200 millimeters is gone out to back segment to be walked around crushing engine and transports, then the coarse coal of need fragmentation is entered to crushing engine and carry out break process, through elevating conveyor, be transported to main travelling belt again, what sort out is less than the mixing coal of 200 millimeters, through sorting transportation section, walk around crushing engine, transferring to crushing engine outlet, to enter elevating conveyor leading portion aboveground to being transported on main travelling belt, complete whole sorting, broken, the process of transportation.
Improve an equipment for block coal rate, comprise crushing engine, elevating conveyor; Elevating conveyor structure comprises bridge section and the section of landing, in the end portion of the section of landing, rise and become uplift sector, uplift sector is provided with crushing engine, screening plant, in elevating conveyor uplift sector, conveying trough has sorting mouth, in elevating conveyor uplift sector, has sorting transportation section, and sorting transportation section side goes out and rises, it is higher than the section of landing, coal dropping point be provided with break away bucket and with the section of landing UNICOM.Described conveyance is scratch board conveyor independently, mainly bears the detour task of crushing engine of coal that transhipment sorts out.
Make an effort in the source that technology and equipment of the present invention produces coal from coal face, first the raw coal entering before crushing engine is classified according to granular size, that is to say: not needing broken middle fritter and foam coal, before entering crushing engine, drain to next transportation system, walk around crushing engine and return main conveying system, in order to avoid unnecessary piece rate loss, and need broken bulk to enter crushing engine, carry out break process, because the variation fragmentation of its broken channel space block coal rate is out than effective many in the past, its reason is: the moment being broken in bulk, because of its channel space large, bulk can be avoided rapidly the impact that the crushing engine of rotation at full speed is hung one's head under the effect of gravity, avoid by the situation of second-time breakage Cheng Mo, so, bulk piece rate in shattering process that must be broken improves, middle fritter is also avoided second-time breakage Cheng Mo, two kinds of combined factors effects, the piece rate that can be (13-200mm) diameter comprehensively improves 5-6 percentage point.
Accompanying drawing explanation
Fig. 1 is the structural representation of anti-overcrushing equipment of the present invention
Fig. 2 is the top view of Fig. 1
?
Fig. 3 is the partial enlarged drawing of Fig. 1
?fig. 4 is the partial enlarged drawing of Fig. 2
Fig. 5 is device elevating conveyor of the present invention and drag conveyor structure place schematic diagram
Fig. 6 is the top view of Fig. 5
Fig. 7 is that device of the present invention is at the installation site of down-hole schematic diagram
Fig. 8 is the B-B sectional drawing of Fig. 7
Fig. 9 is that the A of Fig. 7 is to view
Figure 10 is one of shape figure of sorting mouth
Figure 11 be sorting mouth shape figure two
Figure 12 be sorting mouth shape figure three
In figure: 1-conveyer belt, 2-elevating conveyor bridge section, 3-elevating conveyor uplift sector, 4-crushing engine, 5-electromagnet, 6-sorting transportation section, the 7-section of landing, 8-elevating conveyor baffle plate, 9-sorting mouth A, 10-sorting mouth B, 11-sorting mouth C, the 12-bucket that breaks away
,13-transports lane, 14
-fully-mechanized mining working return airway and Stady On The Auxiliary Transportation Systems, 15-coal body, 16-support, 17-coal-winning machine, 18-work plane scratch board conveyor, 19-elevating conveyor is subject to coal point.
The specific embodiment
As schematically shown in Figure 1, 2, a kind of equipment that improves block coal rate, comprises flexible two middle chain-and-flight conveyers, crushing engine, elevating conveyor; Elevating conveyor structure comprises bridge section 2 and the section of landing 7, the front 4 meters of rises that make progress of end portion of the section of landing 7 become elevating conveyor uplift sector 3, uplift sector is provided with crushing engine 4, the tail end of flexible two middle chain-and-flight conveyers 8 is elevating conveyor uplift sector, in scraper blade elevating conveyor uplift sector, conveying trough has sorting mouth 9,10,11, elevating conveyor uplift sector 3 is connected with elevating conveyor bridge portion section, form bridge conveyor, it has sorting transportation section 6, sorting transportation section side goes out and rises, its end is higher than the section of landing 7, and unloading end being provided with break away bucket 12 and with the section of landing 7 UNICOMs.Described conveyance is two flexible miniaturization elevating conveyors of medium chain independently, and the advantage of two middle-chain scraper conveyers is: freight volume is large, accident rate is low, safeguard well, bendable curvature is high, the transhipment task that can be competent at middle-size and small-size lump coal and foam coal completely.
Described sorting mouth 9,10,11 position are arranged on first three joint chute plate of crushing engine entrance, chute, sorting mouth 10 that sorting mouth A9 is positioned near work plane are positioned on second chute, sorting mouth C11 is positioned on the chute adjacent with crushing engine, sorting mouth B10 is positioned at both sides, chute both sides, openning is split into longitudinal arrow shaped, all opening inward flanges are oval angle, with the bulk under leakproof not and scraper chain, card occur and mix and cause the accident.As Figure 10,11,12 openings of being illustrated also can be rectangle, or being ellipticity, is rhombus, is other shapes such as rectangle ，Wei two ends arc middle part rectangle.
Through the step sizing of three chutes, can will not need broken fritter and foam coal to leak down, on sorting transportation section like this.The coal leaking down is walked around crushing engine to the crushing engine port of export, then reprint to unloading under elevating conveyor bridge and converge with the lump coal that crushing engine outlet transports by the transhipment of two middle-chain scraper conveyers, by elevating conveyor bridge portion, arrive elevating conveyor unloading point coal breakage, reach work plane and transport the middle-size and small-size coal cinder and the foam coal that come and be no longer subject to second-time breakage and reach the object of carrying high lump rate.In order to prevent that bulk, middle plate, scraper chain from the generation of mixing and causing the accident occurring to block; (1) calutron is installed in Lou Meizhongban the place ahead; absorption transports next ironware from work plane; to prevent that it from damaging scraper chain; (2) electrical equipment control aspect; utilize overcurrent technology to control the control system of San Ji transportation system; reach to occur to block and mix after-current moment increase and the effect of stop block three machines; the chain rupture accident causing when preventing that scraper chain, card from mixing thing, middle plate and strong card occurs mix; card is mixed after thing taking-up, recovers three machines operations.
Anticipate as shown in Figure 7,8, whole assorting room is as follows, coal-winning machine cuts raw coal from work plane coal body, drop on Scraper Conveyor in Mining Face, after arriving protrusion, through the screening effect of sorting mouth, the coal cinder sorting that is less than 200 millimeters is fallen in the sorting transportation section of its below, transport head to and be offloaded to transfer conveyor tail and be subject to coal point, by elevating conveyor, drive raw coal head-end to carry; All the other are greater than 200 millimeters of coarse coals and are transported crusher in crushing, coal after fragmentation continues to be transported to the crushing engine outlet section of landing, do not converge with the coal of not processing through fragmentation, then by elevating conveyor bridge portion, arrive elevating conveyor unloading point coal breakage, thereby complete whole coal mining, early stage sorting coal, broken processing overall process.
Claims (7)
1. an equipment that improves block coal rate, is characterized in that: structure comprises drag conveyor, crushing engine, the elevating conveyor with bent ridge section, elevating conveyor structure comprises bridge section (2) and the section of landing (7), the end portion of the section of landing (7) upwards rises and becomes elevating conveyor uplift sector (3), uplift sector is provided with crushing engine (4), the front end of drag conveyor (8) rises as uplift sector, in drag conveyor uplift sector, conveying trough has sorting mouth A(9), sorting mouth B(10), sorting mouth C(11), elevating conveyor uplift sector (3) is connected with drag conveyor uplift sector, form bridge portion, it has sorting transportation section (6), sorting transportation section side goes out and rises, its head end is higher than the section of landing (7), and head end be provided with break away bucket (12) and with the section of landing (7) UNICOM.
2. the equipment of raising block coal rate according to claim 1, it is characterized in that: described sorting mouth A(9), sorting mouth B(10), sorting mouth C(11) position be arranged on first three joint chute plate of crushing engine entrance, sorting mouth A(9) be positioned at chute, the sorting mouth B(10 near work plane) be positioned on second chute, sorting mouth C(11) be positioned on the chute adjacent with crushing engine, sorting mouth B(10) be positioned at both sides, chute both sides, all edge of opening are oval angle, and sheet material is the manganese steel plate manufacture of 50-60 millimeter.
3. the equipment of raising block coal rate according to claim 1 and 2, is characterized in that: sorting mouth A(9), sorting mouth B(10), sorting mouth C(11) openning is split into longitudinally
arrow shaped.
4. the equipment of raising block coal rate according to claim 1 and 2, is characterized in that: sorting mouth A(9), sorting mouth B(10), sorting mouth C(11) openning is rectangle.
5. the equipment of raising block coal rate according to claim 1 and 2, is characterized in that: sorting mouth A(9), sorting mouth B(10), sorting mouth C(11) openning head is ellipticity.
6. the equipment of raising block coal rate according to claim 1 and 2, is characterized in that: sorting mouth A(9), sorting mouth B(10), sorting mouth C(11) openning is rhombus.
7. the equipment of raising block coal rate according to claim 1 and 2, is characterized in that: sorting mouth A(9), sorting mouth B(10), sorting mouth C(11) openning is rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110188279.7A CN102269012B (en) | 2011-07-06 | 2011-07-06 | Process and equipment for increasing block coal rate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110188279.7A CN102269012B (en) | 2011-07-06 | 2011-07-06 | Process and equipment for increasing block coal rate |
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| CN102269012A CN102269012A (en) | 2011-12-07 |
| CN102269012B true CN102269012B (en) | 2014-01-15 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105413841B (en) * | 2015-12-11 | 2017-08-25 | 济南澳海炭素有限公司 | A kind of carbon block smashing induction system |
| CN106948814B (en) * | 2017-03-17 | 2019-04-05 | 中国神华能源股份有限公司 | A kind of coal excavation apparatus and coal-mining method |
| CN110201881B (en) * | 2019-04-29 | 2021-05-18 | 内蒙古万众炜业科技环保股份公司 | Large-particle-size coal washing plant |
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| DE3823863A1 (en) * | 1988-06-17 | 1989-12-21 | Ruhrkohle Ag | Underground-working method with hydraulic conveying and installation for carrying out the method |
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2011
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Patent Citations (6)
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| DE3823863A1 (en) * | 1988-06-17 | 1989-12-21 | Ruhrkohle Ag | Underground-working method with hydraulic conveying and installation for carrying out the method |
| CN2479213Y (en) * | 2000-12-29 | 2002-02-27 | 煤炭科学研究总院太原分院 | Self-moving device for bridge-type elevating conveyor |
| CN2584571Y (en) * | 2002-11-04 | 2003-11-05 | 神华集团有限责任公司 | Continuous conveyer |
| CN101598018A (en) * | 2009-06-29 | 2009-12-09 | 煤炭科学研究总院太原研究院 | Supporting stepped type fragmentation behind the anchor driving machine, reprinting continuous transport equipment |
| CN201439717U (en) * | 2009-06-29 | 2010-04-21 | 煤炭科学研究总院太原研究院 | Back-up traveling type crushing and transfer continuous transportation device of tunneling and bolting machine |
| CN202215290U (en) * | 2011-07-06 | 2012-05-09 | 山西晋城无烟煤矿业集团有限责任公司 | Equipment for improving block coal yield |
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| 《提高块煤率生产的探讨与实践》;凌良辅等;《矿山压力与顶板管理》;20030131;第2003年卷(第01期);62-64 * |
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