CN104632276B - Continuous strength coal mining with gangue backfilling system - Google Patents
Continuous strength coal mining with gangue backfilling system Download PDFInfo
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- CN104632276B CN104632276B CN201410741273.1A CN201410741273A CN104632276B CN 104632276 B CN104632276 B CN 104632276B CN 201410741273 A CN201410741273 A CN 201410741273A CN 104632276 B CN104632276 B CN 104632276B
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- spoil
- conveying
- discharger
- pipeline
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/005—Methods or devices for placing filling-up materials in underground workings characterised by the kind or composition of the backfilling material
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/08—Filling-up hydraulically or pneumatically
- E21F15/10—Hydraulic or pneumatic filling-up machines
Abstract
The invention provides a kind of continuous strength coal mining with gangue backfilling system. This continuous strength coal mining with gangue backfilling system includes: protective stent, including running gear, front supporting and rear supporting; Coal-winning machine, is positioned at below front supporting, and multiple protective stents are arranged side by side along the direct of travel of coal-winning machine; Strength waste filling device, strength waste filling device level is movably disposed at the lower section of rear supporting, strength waste filling device includes the Pneumatic conveyer for carrying spoil, and connects and regulate the strength pressurizer of the conveying strength of Pneumatic conveyer with Pneumatic conveyer; Stop gauge, is arranged on to stop the spoil in filling area below strength waste filling device, and is connected by retractor device with between running gear. Continuous strength coal mining with gangue backfilling system according to the present invention, it is possible to solve the air conveying ability of strength filling system in prior art weak, the inefficient problem of waste filling.
Description
Technical field
The present invention relates to underground mine production technique field, in particular to a kind of continuous strength coal mining with gangue backfilling system.
Background technology
Current colliery is in reply " three times " problem such as exploitation of coal resources, surface collapse preventing and treating, commonly used filling coal mining method, wherein adopt ground washing spoil, the primary spoil in down-hole and other solid waste directly after fully mechanized mining supporter the mining way of filling be called solid waste filling machinery performing comprehensive coal mining method. There are the following problems for currently used employing strength filling system: filling waste rock conveying capacity is little; Stowing operation requires over pipeline handling method extend or block pipeline and realize the filling method of diverse location, cause the problem that can not realize continuous filling so that strength filling system carries out the inefficient of waste filling.
Summary of the invention
It is desirable to provide a kind of continuous strength coal mining with gangue backfilling system, weak to solve the air conveying ability of strength filling system in prior art, the inefficient problem of waste filling.
To achieve these goals, according to an aspect of the present invention, provide a kind of continuous strength coal mining with gangue backfilling system, including: protective stent, protective stent includes the running gear of bottom, is arranged on the front supporting of front side and is arranged on the rear supporting of rear side; Coal-winning machine, is connected with running gear, and is positioned at below front supporting, and multiple protective stents are arranged side by side along the direct of travel of coal-winning machine; Strength waste filling device, strength waste filling device is movably disposed at the lower section of rear supporting along the direction level closer or far from filling area, strength waste filling device includes the Pneumatic conveyer for carrying spoil, and connects and regulate the strength pressurizer of the conveying strength of Pneumatic conveyer with Pneumatic conveyer; Stop gauge, is arranged on to stop the spoil in filling area below strength waste filling device, and is connected by retractor device with between running gear.
Further, Pneumatic conveyer includes the conveying Gas controller, roots blower, doffer and the material Pneumatic conveying pipeline that are sequentially connected with.
Further, strength pressurizer includes the gas compressor being sequentially connected with, air accumulator, assist gas controller, also include material strength pressure-increasing unit pipeline and material strength supercharging discharge pipe, material strength pressure-increasing unit pipeline and material strength supercharging discharge pipe are communicated to assist gas controller simultaneously, material strength supercharging discharge pipe is arranged on the side away from filling area of material Pneumatic conveying pipeline, and extend along the bearing of trend of material Pneumatic conveying pipeline, material strength pressure-increasing unit pipeline is arranged on the bottom of material Pneumatic conveying pipeline, and extend along the bearing of trend of material Pneumatic conveying pipeline.
Further, material Pneumatic conveying pipeline being arranged at intervals with multiple penumatic conveying discharger along spoil conveying direction, penumatic conveying discharger is arranged with protective stent one_to_one corresponding, and the discharge port of penumatic conveying discharger is towards filling area.
Further, the discharge port angle of penumatic conveying discharger be obliquely 0 to 15 degree.
Further, the link position place of material Pneumatic conveying pipeline and penumatic conveying discharger is seamlessly transitted as rectangle by circle, and penumatic conveying discharger is cuboid.
Further, penumatic conveying discharger includes: discharger body, and discharger body includes discharge port and is arranged on the slip draw-in groove at discharge port place; Rotating shaft, is rotatably arranged on discharger body, rotating shaft is provided with turning gear; Slide outside hermatic door, is slidably disposed in slip draw-in groove to open or to close discharge port; Interior open Dump gate, it is fixedly installed in rotating shaft, and with axis of rotation, there is the primary importance closed the intrinsic spoil transfer passage of discharger and spoil is led, and open the intrinsic spoil transfer passage of discharger so that the second position passed through of spoil; Tooth bar, the externally connected slipper seal door in one end, the other end engages with the turning gear in rotating shaft; Driving oil cylinder, the first end is connected on discharger body, and the second end is connected on tooth bar.
Further, when interior open Dump gate is positioned at the second position, interior open Dump gate and slide outside hermatic door superposition block are at discharge port place.
Further, by multiple spaced first pressure inlets between material strength supercharging discharge pipe and material Pneumatic conveying pipeline, the first pressure inlet is connected to material Pneumatic conveying pipeline from material strength supercharging discharge pipe along spoil conveying direction is oblique; By multiple spaced second pressure inlets between material strength pressure-increasing unit pipeline and material Pneumatic conveying pipeline, the second pressure inlet is connected to material Pneumatic conveying pipeline from material strength pressure-increasing unit pipeline along spoil conveying direction is oblique.
Further, material strength pressure-increasing unit pipeline is all arranged at intervals with multiple slide valve along spoil conveying direction, and the first pressure inlet of each material strength supercharging discharge pipe is provided with slide valve, and the end of material Pneumatic conveying pipeline is provided with pipe-line purging valve.
Further, the height adjustable of stop gauge.
Application technical scheme, continuous strength coal mining with gangue backfilling system includes: protective stent, and protective stent includes the running gear of bottom, is arranged on the front supporting of front side and is arranged on the rear supporting of rear side; Coal-winning machine, is connected with running gear, and is positioned at below front supporting, and multiple protective stents are arranged side by side along the direct of travel of coal-winning machine; Strength waste filling device, strength waste filling device is movably disposed at the lower section of rear supporting along the direction level closer or far from filling area, strength waste filling device includes the Pneumatic conveyer for carrying spoil, and connects and regulate the strength pressurizer of the conveying strength of Pneumatic conveyer with Pneumatic conveyer; Stop gauge, is arranged on to stop the spoil in filling area below strength waste filling device, and is connected by retractor device with between running gear. In the process of continuous strength coal mining with gangue backfilling system work, strength pressurizer can be passed through and increase the spoil conveying strength of Pneumatic conveyer, and strength can be carried to be adjusted the spoil of Pneumatic conveyer by strength pressurizer, therefore the spoil conveying capacity of Pneumatic conveyer can be effectively increased, increase spoil conveying capacity, reduce pipe wear, improve waste filling speed, can also controlling Pneumatic conveyer simultaneously and carry out spoil near-end discharging and far-end material casting filling, that improves waste filling connects top degree naturally.
Accompanying drawing explanation
The accompanying drawing constituting the part of the present invention is used for providing a further understanding of the present invention, and the schematic description and description of the present invention is used for explaining the present invention, is not intended that inappropriate limitation of the present invention. In the accompanying drawings:
Fig. 1 illustrates the first work structuring schematic diagram of continuous strength coal mining with gangue backfilling system according to an embodiment of the invention;
Fig. 2 illustrates the second work structuring schematic diagram of continuous strength coal mining with gangue backfilling system according to an embodiment of the invention;
Fig. 3 illustrates that the structure of the strength waste filling device of continuous strength coal mining with gangue backfilling system according to an embodiment of the invention is away from figure;
Fig. 4 illustrates the perspective view of the first penumatic conveying discharger of continuous strength coal mining with gangue backfilling system according to an embodiment of the invention;
Fig. 5 illustrates the perspective view of the second penumatic conveying discharger of continuous strength coal mining with gangue backfilling system according to an embodiment of the invention;
Fig. 6 illustrates the front view of the penumatic conveying discharger of continuous strength coal mining with gangue backfilling system according to an embodiment of the invention;
Fig. 7 illustrates the top view of the penumatic conveying discharger of the continuous strength coal mining with gangue backfilling system of the Fig. 6 according to the present invention;
Fig. 8 illustrates the tube fit figure of the strength waste filling device of continuous strength coal mining with gangue backfilling system according to an embodiment of the invention;
Fig. 9 illustrates the attachment structure figure between the material Pneumatic conveying pipeline of continuous strength coal mining with gangue backfilling system according to an embodiment of the invention and material strength pressure-increasing unit pipeline;
Figure 10 illustrates the attachment structure figure between the material Pneumatic conveying pipeline of continuous strength coal mining with gangue backfilling system according to an embodiment of the invention and material strength supercharging discharge pipe;
Figure 11 illustrates the protective stent before coal mining and the location diagram between material Pneumatic conveying pipeline;
Figure 12 illustrates the protective stent in coal mining and the location diagram between material Pneumatic conveying pipeline;
Figure 13 illustrates that coal mining starts location diagram during waste filling between protective stent and material Pneumatic conveying pipeline after completing;
Figure 14 illustrates that waste filling starts location diagram during coal mining between protective stent and material Pneumatic conveying pipeline after completing.
Accompanying drawing labelling: 1, protective stent; 2, running gear; 3, front supporting; 4, rear supporting; 5, coal-winning machine; 6, strength waste filling device; 7, stop gauge; 8, penumatic conveying discharger; 9, retractor device; 10, conveying Gas controller; 11, roots blower; 12, doffer; 13, material Pneumatic conveying pipeline; 14, gas compressor; 15, air accumulator; 16, assist gas controller; 17, material strength pressure-increasing unit pipeline; 18, material strength supercharging discharge pipe; 19, discharge port; 20, discharger body; 21, slip draw-in groove; 22, rotating shaft; 23, turning gear; 24, slide outside hermatic door; 25, interior open Dump gate; 26, tooth bar; 27, oil cylinder is driven; 28, the first pressure inlet; 29, the second pressure inlet; 30, slide valve; 31, pipe-line purging valve; 32, the first level detector; 33, the second level detector; 34, middle interconnecting piece; 35, device for filling regulates oil cylinder.
Detailed description of the invention
Below with reference to accompanying drawing and describe the present invention in detail in conjunction with the embodiments. It should be noted that when not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.
A-quadrant in Fig. 1 and Fig. 2 is coal-winning machine working area, B region is walkway, bank, and C region is walkway, filling area, and D region is anterior fill area, E region is rear portion fill area, and wherein D region and E region collectively form strength waste filling device working region. Front and back therein are with direction of mining for reference direction, and coal mining region is front, and fill area is rear. Arrow in Fig. 3, Fig. 4 and Fig. 5 each means spoil conveying direction; Arrow in Fig. 8 refers to material discharging direction; Arrow in Fig. 9 and Figure 10 refers to the flow direction of conveying strength.
In conjunction with referring to shown in Fig. 1 to Fig. 3, according to embodiments of the invention, continuous strength coal mining with gangue backfilling system includes protective stent 1, coal-winning machine 5 and strength waste filling device 6 and stop gauge 7.
Protective stent 1 includes the running gear 2 of bottom, is arranged on the front supporting 3 of front side and is arranged on the rear supporting 4 of rear side.
Coal-winning machine 5 is connected with running gear 2, and is positioned at below front supporting 3.
Strength waste filling device 6 is movably disposed at the lower section of rear supporting 4 along the direction level closer or far from filling area, strength waste filling device 6 includes the Pneumatic conveyer for carrying spoil, and connects and regulate the strength pressurizer of the conveying strength of Pneumatic conveyer with Pneumatic conveyer.
In the present embodiment, rear supporting 4 being provided with device for filling and regulates oil cylinder 35, strength waste filling device 6 is hung on device for filling and regulates the telescopic end of oil cylinder 35. Strength waste filling device 6 can be arranged on the lower section of the rear supporting 4 of protective stent 1 by swing pipe, and swing pipe may be mounted at the lower section of the rear supporting 4 of each protective stent 1, it is also possible to installs one every several protective stents 1.
Stop gauge 7 is arranged on to stop the spoil in filling area below strength waste filling device 6, and is connected by retractor device 9 with between running gear 2. Preferably, the height adjustable of stop gauge 7, it is possible to adapt to the needs of the coal mining system of different mining height, there is better adaptability. Stop gauge 7 is provided with the first level detector 32 and the second level detector 33 near the side of filling area, first level detector 32 and the second level detector 33 can detect the controlling level of filling area, and control the strength pressurizer increasing degree to the air conveying ability of Pneumatic conveyer according to controlling level, the Pneumatic conveyer fed distance to spoil is adjusted, thus carrying out low level discharging filling or high-order material casting filling with this.
Stop gauge 7 includes the two pieces of striker plates being slidably matched so that the height of stop gauge 7 can adjust, such that it is able to match with face height.
Protective stent 1 can be pointed to a-quadrant, the coal-winning machine working area formation protection in protective stent 1 front by front supporting 3, it is ensured that coal-winning machine 5 can in the A safety work of coal-winning machine working area. Protective stent 1 can also be pointed to the strength waste filling device working region formation protection at rear by rear supporting 4 simultaneously so that filling area can be carried out waste filling operation by strength waste filling device in a secure environment.
Protective stent 1 is multiple, and is arranged side by side along the direct of travel of coal-winning machine 5. Multiple discharge ports 19 on strength waste filling device 6 are arranged along spoil conveying direction interval, and protective stent 1 and discharge port 19 one_to_one corresponding on strength waste filling device 6 are arranged.
Being connected by retractor device 9 between corresponding strength waste filling device 6 and running gear 2, one end of this retractor device 9 is hinged on the bottom of running gear 2, and the other end is hinged on the bottom of strength waste filling device 6. In order to the expanding-contracting action of retractor device 9 is formed guiding, ensure the accuracy of position when strength waste filling device 6 moves, the bottom of strength waste filling device 6 is provided with pilot hole, and retractor device 9 is arranged in this pilot hole, and the inner end of end and pilot hole is hinged. Retractor device 9 herein is such as hydraulic jack or hydraulic stem.
Retractor device 9 regulates oil cylinder 35 1 same-action with device for filling, make when running gear 2 together moves with coal-winning machine 5, strength waste filling device 6 and stop gauge 7 may remain in original place, though strength waste filling device 6 and stop gauge 7 can have certain action hysteresis quality relative to running gear 2 and coal-winning machine 5. Consequently, it is possible to when coal-winning machine 5 moves ahead execution coal mining action, strength waste filling device 6 and stop gauge 7 still may remain in original place. Namely complete coal mining activity when coal-winning machine, and when running gear 2 follows up successively, the spoil conveyance conduit of Pneumatic conveyer remains in that point-blank, advances nonsynchronous impact without being subject to running gear 2 protective stent 1 that coal-winning machine 5 brings that follows up. Thus, just can adopt the work surface design that large-mining-height working surface is divided into anterior coal-face and filling operation face, rear portion, equipment is conducive to run, personnel overhaul, the filling action of the coal mining action and strength waste filling device 6 that can realize coal-winning machine 5 is synchronously performed, coal mining efficiency and waste filling efficiency can be improved simultaneously, accelerate the progress of whole engineering, save great amount of cost.
When continuous strength coal mining with gangue backfilling system works, owing to discharge port 19 one_to_one corresponding on protective stent 1 and strength waste filling device 6 is arranged, and be connected by device for filling adjustment oil cylinder 35 between strength waste filling device 6 and protective stent 1 accordingly, it is connected by retractor device 9 between stop gauge 7 with protective stent 1, the expanding-contracting action that the action of strength waste filling device 6 regulates oil cylinder 35 by device for filling is made to form buffer area, can Asynchrony, just can respectively the filling of the coal mining of coal-winning machine 5 and strength waste filling device 6 be operated thus, coal-winning machine 5 is made to mine while action, filling action without influence on its corresponding strength waste filling device 6, coal mining can be realized carry out with filling simultaneously, and can make to keep synchronous coordination between the spoil conveyance conduit on different protective stents 1 by device for filling adjustment oil cylinder 35, straight line can be remained, ensure being smoothed out of filling operation.
Pneumatic conveyer includes the conveying Gas controller 10, roots blower 11, doffer 12 and the material Pneumatic conveying pipeline 13 that are sequentially connected with. Conveying Gas controller 10 is for controlling the output strength size of roots blower 11. Gas compressor 14 that strength pressurizer includes being sequentially connected with, air accumulator 15, assist gas controller 16, also including material strength pressure-increasing unit pipeline 17 and material strength supercharging discharge pipe 18, assist gas controller 16 is for controlling the output strength size of gas compressor 14. Material strength pressure-increasing unit pipeline 17 and material strength supercharging discharge pipe 18 are communicated to assist gas controller 16 simultaneously, material strength supercharging discharge pipe 18 is arranged on the side away from filling area of material Pneumatic conveying pipeline 13, and extend along the bearing of trend of material Pneumatic conveying pipeline 13, material strength pressure-increasing unit pipeline 17 is arranged on the bottom of material Pneumatic conveying pipeline 13, and extends along the bearing of trend of material Pneumatic conveying pipeline 13.
Material strength pressure-increasing unit pipeline 17 is arranged on below material Pneumatic conveying pipeline 13, can upwards blow out air-flow, spoil is suspended forward movement, it is prevented from spoil to fall into and cause material Pneumatic conveying pipeline 13 to block bottom material Pneumatic conveying pipeline 13, ensure that material Pneumatic conveying pipeline 13 transports spoil smoothly, can be effectively improved spoil conveying capacity, and the abrasion to material Pneumatic conveying pipeline 13 can be reduced in spoil course of conveying, extend the service life of material Pneumatic conveying pipeline 13.
Material strength supercharging discharge pipe 18 is arranged on the side of material Pneumatic conveying pipeline 13, and outlet is towards the position of discharge port 19, it is possible to when carrying out spoil discharging, increase the spoil discharging strength of material Pneumatic conveying pipeline 13, ensure that spoil enters filling area smoothly, and improve spoil charging efficiency. By adjusting the size of strength in material strength supercharging discharge pipe 18, it is possible to adjustment spoil, in the blanking position of filling area, is filled and far-end high position material casting so that spoil forms near-end low level, and that improves spoil filling connects top degree naturally.
In conjunction with referring to shown in Fig. 8 to Figure 10, by multiple spaced first pressure inlets 28 between material strength supercharging discharge pipe 18 and material Pneumatic conveying pipeline 13, the first pressure inlet 28 is connected to material Pneumatic conveying pipeline 13 from material strength supercharging discharge pipe 18 along spoil conveying direction is oblique; By multiple spaced second pressure inlets 29 between material strength pressure-increasing unit pipeline 17 and material Pneumatic conveying pipeline 13, the second pressure inlet 29 is connected to material Pneumatic conveying pipeline 13 from material strength pressure-increasing unit pipeline 17 along spoil conveying direction is oblique.
Second pressure inlet 29 is connected to material Pneumatic conveying pipeline 13 from material strength pressure-increasing unit pipeline 17 along spoil conveying direction is oblique, therefore the spoil that material strength pressure-increasing unit pipeline 17 is possible not only to being positioned at material Pneumatic conveying pipeline 13 by the second pressure inlet 29 provides suspension effect power, and may be provided for traveling active force, the spoil conveying capacity of material Pneumatic conveying pipeline 13 can be further enhanced, improve conveying capacity and the transporting velocity of spoil.
First pressure inlet 28 is connected to material Pneumatic conveying pipeline 13 from material strength supercharging discharge pipe 18 along spoil conveying direction is oblique, therefore material strength supercharging discharge pipe 18 can when first pressure inlet 28 corresponding discharge port 19 place's discharging by the first pressure inlet 28, strengthen the strength that spoil sprays from discharge port 19, improve spoil unloading performance.
It is connected by first pressure inlet 28 along spoil conveying direction every 30cm distance between material strength supercharging discharge pipe 18 and material Pneumatic conveying pipeline 13, can ensure that each section of material Pneumatic conveying pipeline 13 all can obtain enough air conveying supplement, there is enough gas deliverabilities, can ensure that the conveying capacity of spoil, and it is effectively ensured in spoil course of conveying to be in suspended state, reduce and contact friction between material Pneumatic conveying pipeline 13.
It is connected by second pressure inlet 29 along spoil conveying direction every 30cm distance between material strength pressure-increasing unit pipeline 17 and material Pneumatic conveying pipeline 13, can ensure that material Pneumatic conveying pipeline 13 has enough air conveying abilities at each discharge port 19 place and carries out spoil discharging process, it is ensured that the material casting height of spoil and material casting distance.
Preferably, first pressure inlet 28 of material strength supercharging discharge pipe 18 is arranged with discharge port 19 one_to_one corresponding, second pressure inlet 29 of material strength pressure-increasing unit pipeline 17 is arranged with discharge port 19 one_to_one corresponding, and first pressure inlet 28 and the second pressure inlet 29 arranging position and differing along spoil conveying direction, the Way out of material strength supercharging discharge pipe 18 just discharge port 19 to penumatic conveying discharger 8.
Owing to material strength supercharging discharge pipe 18 mainly provides the discharging active force of spoil, what therefore material strength pressure-increasing unit pipeline 17 is increased should be the strength in the discharging direction along discharge port 19, and the strength making spoil upwards suspend that material strength pressure-increasing unit pipeline 17 mainly provides, what therefore material strength pressure-increasing unit pipeline 17 is increased should be the suspension strength of spoil, the direction of two kinds of power also differs, therefore make the first pressure inlet 28 and the second pressure inlet 29 arranging position and differing along spoil conveying direction, can avoid being formed between two kinds of strengths interfering, highlight the function each realized with becoming apparent from, more efficiently promote spoil conveying capacity and the unloading performance of strength waste filling device 6.
In conjunction with referring to shown in Fig. 4 to Fig. 8, material Pneumatic conveying pipeline 13 is arranged at intervals with multiple penumatic conveying discharger 8 along spoil conveying direction, penumatic conveying discharger 8 is arranged with protective stent 1 one_to_one corresponding, and the discharge port 19 of penumatic conveying discharger 8 is towards filling area. Each penumatic conveying discharger 8 is connected between two sections of material Pneumatic conveying pipelines 13, the difference of the position, filling area of discharge port 19 correspondence according to penumatic conveying discharger 8, filling area can be divided into multiple subregion, the corresponding subregion of each discharge port 19, and carry out the spoil filling of this subregion.
Discharge port 19 angle of penumatic conveying discharger 8 be obliquely 0 to 15 degree, penumatic conveying discharger 8 can be effectively ensured and spoil can be formed good low speed discharging near-end filling and high speed material casting far-end connects top effect, improve the filling effect of penumatic conveying discharger 8.
The link position place of material Pneumatic conveying pipeline 13 and penumatic conveying discharger 8 is seamlessly transitted as rectangle by circle, and penumatic conveying discharger 8 is cuboid, it is possible to be more convenient for discharging and material casting.
Penumatic conveying discharger 8 includes discharger body 20, rotating shaft 22, slide outside hermatic door 24, interior open Dump gate 25, tooth bar 26 and drives oil cylinder 27.
Discharger body 20 includes discharge port 19 and is arranged on the slip draw-in groove 21 at discharge port 19 place, and slide outside hermatic door 24 is slidably disposed in slip draw-in groove 21 to open or to close discharge port 19.
Rotating shaft 22 is rotatably arranged on discharger body 20, rotating shaft 22 is provided with turning gear 23, the externally connected slipper seal door 24 in tooth bar 26 one end, the other end engages with the turning gear 23 in rotating shaft 22, driving oil cylinder 27 first end to be connected on discharger body 20, the second end is connected on tooth bar 26.
Interior open Dump gate 25 is fixedly installed in rotating shaft 22, and rotate with rotating shaft 22, there is the spoil transfer passage closed in discharger body 20 primary importance that spoil is led, and open the spoil transfer passage in discharger body 20 so that the second position passed through of spoil.
Formation interaction relation between slide outside hermatic door 24 and interior open Dump gate 25 can be made, as long as operation drives oil cylinder 27 action, it is possible to realize the control to outside slipper seal door 24 and interior open Dump gate 25 by tooth bar 26 simultaneously. In the present embodiment, oil cylinder 27 is driven to drive tooth bar 26 to move, slide outside hermatic door 24 and interior open Dump gate 25 is driven to move, and when interior open Dump gate 25 is in primary importance, slide outside hermatic door 24 opens discharge port 19, when interior open Dump gate 25 is in the second position, slide outside hermatic door 24 closes discharge port 19.
Position is set can the having multiple of rotating shaft 22, for instance be arranged on the penumatic conveying discharger 8 feed end along spoil conveying direction, or be arranged on the penumatic conveying discharger 8 feed end discharge end along spoil conveying direction. The present embodiment is preferably arranged on the penumatic conveying discharger 8 feed end discharge end along spoil conveying direction.
In conjunction with shown in Figure 4, when rotating shaft 22 is arranged on penumatic conveying discharger 8 along the discharge end of spoil conveying direction, owing to direction of motion when interior open Dump gate 25 is opened is identical with spoil conveying direction, and direction of motion when closing is contrary with spoil conveying direction, this just determines when carrying out spoil conveying, interior open Dump gate 25 in such cases is easy to open and is not easy to close, therefore, if selecting the set-up mode of this kind of rotating shaft 22, the penumatic conveying discharger 8 from being positioned at spoil conveying direction end is then needed to proceed by waste filling, then filling is carried out to the direction being positioned at spoil conveying direction initial end gradually. in whole stowing operation, owing to interior open Dump gate 25 is without influence on the stowing operation of spoil, therefore the continuous filling in filling area to different penumatic conveying discharger 8 places can be realized, without the conveying stopping spoil in order to open interior open Dump gate 25, what can realize spoil carries filling continuously, improves waste filling efficiency.
In addition, when interior open Dump gate 25 is in the second position, slide outside hermatic door 24 closes discharge port 19, side, interior open Dump gate 25 externally-located slipper seal door 24 place, can be stacked on slide outside hermatic door 24, discharge port 19 is formed further sealing, it is possible to make penumatic conveying discharger 8 have better seal when using as spoil transfer passage, improve gas transport efficiency.
In conjunction with shown in Figure 5, the penumatic conveying discharger 8 feed end along spoil conveying direction is arranged on for rotating shaft 22, owing to direction of motion when interior open Dump gate 25 is opened is contrary with spoil conveying direction, and direction of motion when closing is identical with spoil conveying direction, this just determines when carrying out spoil conveying, interior open Dump gate 25 in such cases is easy to close and be not easy to open, therefore, if selecting the set-up mode of this kind of rotating shaft 22, the penumatic conveying discharger 8 from being positioned at spoil conveying direction initial end is then needed to proceed by waste filling, then filling is carried out to the direction being positioned at spoil conveying direction end gradually. in whole stowing operation, owing to interior open Dump gate 25 is without influence on the stowing operation of spoil, therefore the continuous filling in filling area to different penumatic conveying discharger 8 places can be realized, without the conveying stopping spoil in order to open interior open Dump gate 25, what can realize spoil carries filling continuously, improves waste filling efficiency.
Preferably, material strength pressure-increasing unit pipeline 17 is all arranged at intervals with multiple slide valve 30 along spoil conveying direction, being provided with slide valve 30 on first pressure inlet 28 of each material strength supercharging discharge pipe 18, the end of material Pneumatic conveying pipeline 13 is provided with pipe-line purging valve 31. The multiple slide valves 30 being positioned on material strength pressure-increasing unit pipeline 17 are arranged with penumatic conveying discharger 8 one_to_one corresponding, for controlling the material strength pressure-increasing unit pipeline 17 strength supercharging break-make at this penumatic conveying discharger 8 place. It is positioned at the slide valve 30 on the first pressure inlet 28 for controlling the break-make of first pressure inlet 28 at its place. The gas transfer position of material strength pressure-increasing unit pipeline 17 and material strength supercharging discharge pipe 18 can be limited by slide valve 30, prevent in the process of work, material strength pressure-increasing unit pipeline 17 and material strength supercharging discharge pipe 18 proceed strength supercharging to the material Pneumatic conveying pipeline 13 in the filled region completed, and improve the work efficiency of strength waste filling device 6.
Rear supporting 4 includes telescopic back bar. Existence due to retractor device 9, strength waste filling device working region is made to include anterior fill area D and rear portion fill area E, namely fill area scope is significantly increased, in order to ensure that protective stent 1 remains able to effectively strength waste filling device working region be formed protection, being provided with telescopic back bar in rear supporting 4, this back bar can increase the protective range of protective stent 1. Back bar stretches out when continuous strength coal mining with gangue backfilling system starts, then remain and stretch out, strength waste filling device working region is made to be in the protective range of protective stent 1 all the time, it is ensured that the trouble free service of strength waste filling device.
Additionally, when being in unused state, it is possible to back bar is regained such that it is able to reduce the length of whole protective stent 1, reduce the space hold of protective stent 1 so that protective stent 1 easily facilitates transfer and transport.
Protective stent 1 also includes the middle interconnecting piece 34 being connected between front supporting 3 and rear supporting 4, front supporting 3 and rear supporting 4 are slidably connected with middle interconnecting piece 34, protective stent 1 is made to form anterior bank and filling operation district, rear portion, it is capable of coal mining and filling works alone, coordinate to move frame and ensure front and back work space.
Continuous strength coal mining with gangue backfilling system also includes supervising device, supervising device is for monitoring the waste filling situation of strength waste filling device 6, the filling situation of filling area can be obtained in time, and position and the duty of strength waste filling device 6 are adjusted by the filling situation according to filling area.
When continuous strength coal mining with gangue backfilling system works, firstly the need of carrying out spoil conveying action, now conveying Gas controller 10 controls roots blower 11 in low or first gear operation, produce low speed material delivery air, low speed material delivery air drives the spoil fallen into by doffer 12 in material Pneumatic conveying pipeline 13 to suspend forward movement, the material strength pressure-increasing unit pipeline 17 of bottom exports to tilt obliquely to material Pneumatic conveying pipeline 13, and towards spoil moving direction motion secondary air, spoil in material Pneumatic conveying pipeline 13 is made to keep suspension to move forward, when in material Pneumatic conveying pipeline 13, spoil falls, fairly fall in the nozzle place of pipeline lower second level material strength pressure-increasing unit pipeline 17, it is once again subjected to secondary air blow, keep suspended motion state.
Before filling starts, the interior open Dump gate 25 of each penumatic conveying discharger 8, slide outside hermatic door 24 are turned off, and the discharge port 19 of each penumatic conveying discharger 8 is turned off, and internal spoil transfer passage keeps unimpeded. Then the slide outside hermatic door 24 of end penumatic conveying discharger 8 is opened, close the interior open Dump gate 25 of penumatic conveying discharger 8, open the slide valve 30 on whole material strength pressure-increasing unit pipeline 17, open the slide valve 30 on the first pressure inlet 28 of afterbody material strength supercharging discharge pipe 18 corresponding with end penumatic conveying discharger 8, run roots blower 11, make spoil pass through doffer 12 afterwards and fall in material Pneumatic conveying pipeline 13.
Namely spoil unloads along the penumatic conveying discharger 8 of the least significant end of spoil conveying direction from afterbody and falls in the fill area E of rear portion, and the filling area corresponding to afterbody penumatic conveying discharger 8 is carried out filling. After the filling area filling corresponding to afterbody penumatic conveying discharger 8 completes, opening the interior open Dump gate 25 of the penultimate stage penumatic conveying discharger 8 adjacent with afterbody penumatic conveying discharger 8, slide outside hermatic door 24, the slide valve 30 on penultimate stage material strength supercharging discharge pipe 18 is opened. After penultimate stage penumatic conveying discharger 8 fully opens, slide valve 30 time delay on slide valve 30 time delay on afterbody material strength pressure-increasing unit pipeline 17 30 seconds closedowns, afterbody strength supercharging discharge pipes 18 is closed for 35 seconds, afterbody penumatic conveying discharger 8 time delay is closed for 40 seconds, starts penultimate stage filling process. It is sequentially carried out filling action afterwards, until namely the first order completes along penumatic conveying discharger 8 filling of the initial end of spoil conveying direction, now all penumatic conveying discharger 8 cuts out, the valve closing on all material strength pressure-increasing unit pipelines 17, material strength supercharging discharge pipe 18.
Take turns one or several take turns after filling completes, stopping spoil conveying, close all penumatic conveying dischargers 8, carry out pipeline cleaning. After flushing starts, material strength pressure-increasing unit pipeline 17 and material strength supercharging discharge pipe 18 all run; Valve on material strength pressure-increasing unit pipeline 17 is fully open, afterbody valve closing; The afterbody pipe-line purging valve 31 of material Pneumatic conveying pipeline 13 is opened, and all penumatic conveying dischargers 8 cut out, and pass into gas and are carried out. After flushing terminates, close the afterbody pipe-line purging valve 31 of material Pneumatic conveying pipeline 13, close the slide valve 30 on all material strength supercharging discharge pipes 18 except afterbody, open afterbody penumatic conveying discharger 8, carry out the filling of a new round.
When each penumatic conveying discharger 8 carries out filling, first carry out low level discharging filling, then carry out high-order material casting filling. During low level discharging filling, material strength supercharging discharge pipe 18 low pressure operation, spoil low level discharging, when near-end discharging filling area spoil height reaches the first level detector 32 position, carry out next filling section low level filling. After the penumatic conveying discharger 8 of whole filling area all completes low level filling, strength waste filling device 6 turns to high-order material casting operational mode. During high-order material casting filling, strength supercharging discharge pipe 18 high-voltage operation, spoil high position material casting, when high-order material casting filling area spoil height reaches the second level detector position, carry out next filling section high position filling, after the penumatic conveying discharger 8 of whole filling area all completes high-order material casting filling, epicycle sand off.
During strength waste filling device 6 runs, material Pneumatic conveying pipeline 13 pressure P 1 is less than the pressure P 2 of material strength pressure-increasing unit pipeline 17, again smaller than non-correlation between material strength supercharging discharge pipe 18 pressure P 3, P2, P3 pressure.
Below the action relationships of protective stent in stowing operation 1 and strength waste filling device 6 is illustrated. When after work surface installation, strength waste filling device 6 is positioned at anterior fill area D and keeps consistent with the position of stop gauge 7, coal-winning machine 5 carries out exploitation action at coal-face, and protective stent 1 moves forward along the coal mining direction of coal-winning machine 5 towards bank order. After a protective stent 1 completes movement, strength waste filling device 6 on this protective stent 1 is regulated oil cylinder 35 by device for filling and moves in the fill area E of rear portion, keep in alignment with the strength waste filling device 6 on adjacent protective stent 1, be specially penumatic conveying discharger 8 here in alignment.
The first round has mined, and protective stent 1 completes reach, and strength waste filling device 6 is positioned at the fill area E place, rear portion of protective stent 1, starts first round low speed discharging, high speed material casting filling. After filling completes, strength waste filling device 6 and stop gauge 7 entirety move in anterior fill area D, start new round low speed discharging, high speed material casting filling, if now filling area spoil arrives the first controlling level, directly start high speed material casting filling, until filling completes, then start next round coal mining (referring to shown in Figure 11 to Figure 14).
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations. All within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (9)
1. a continuous strength coal mining with gangue backfilling system, it is characterised in that including:
Protective stent (1), described protective stent (1) includes the running gear (2) of bottom, is arranged on the front supporting (3) of front side and is arranged on the rear supporting (4) of rear side;
Coal-winning machine (5), is connected with described running gear (2), and is positioned at described front supporting (3) lower section, and multiple described protective stents (1) are arranged side by side along the direct of travel of described coal-winning machine (5);
Strength waste filling device (6), described strength waste filling device (6) is movably disposed at the lower section of described rear supporting (4) along the direction level closer or far from filling area, described strength waste filling device (6) includes the Pneumatic conveyer for carrying spoil, and connects and regulate the strength pressurizer of the conveying strength of described Pneumatic conveyer with described Pneumatic conveyer;
Stop gauge (7), is arranged on described strength waste filling device (6) lower section to stop the spoil in described filling area, and is connected by retractor device (9) with between described running gear (2);
Described Pneumatic conveyer includes the conveying Gas controller (10), roots blower (11), doffer (12) and the material Pneumatic conveying pipeline (13) that are sequentially connected with;
Described strength pressurizer includes the gas compressor (14) being sequentially connected with, air accumulator (15), assist gas controller (16), also include material strength pressure-increasing unit pipeline (17) and material strength supercharging discharge pipe (18), described material strength pressure-increasing unit pipeline (17) and material strength supercharging discharge pipe (18) are communicated to described assist gas controller (16) simultaneously, described material strength supercharging discharge pipe (18) is arranged on the side away from filling area of described material Pneumatic conveying pipeline (13), and extend along the bearing of trend of described material Pneumatic conveying pipeline (13), described material strength pressure-increasing unit pipeline (17) is arranged on the bottom of described material Pneumatic conveying pipeline (13), and extend along the bearing of trend of described material Pneumatic conveying pipeline (13).
2. continuous strength coal mining with gangue backfilling system according to claim 1, it is characterized in that, described material Pneumatic conveying pipeline (13) is arranged at intervals with multiple penumatic conveying discharger (8) along spoil conveying direction, described penumatic conveying discharger (8) is arranged with described protective stent (1) one_to_one corresponding, and the discharge port (19) of described penumatic conveying discharger (8) is towards filling area.
3. continuous strength coal mining with gangue backfilling system according to claim 2, it is characterised in that discharge port (19) angle of described penumatic conveying discharger (8) be obliquely 0 to 15 degree.
4. the continuous strength coal mining with gangue backfilling system according to Claims 2 or 3, it is characterized in that, the link position place of described material Pneumatic conveying pipeline (13) and described penumatic conveying discharger (8) is seamlessly transitted as rectangle by circle, and described penumatic conveying discharger (8) is cuboid.
5. the continuous strength coal mining with gangue backfilling system according to Claims 2 or 3, it is characterised in that described penumatic conveying discharger (8) including:
Discharger body (20), described discharger body (20) includes described discharge port (19) and is arranged on the slip draw-in groove (21) at described discharge port (19) place;
Rotating shaft (22), is rotatably arranged on described discharger body (20), described rotating shaft (22) is provided with turning gear (23);
Slide outside hermatic door (24), is slidably disposed in described slip draw-in groove (21) to open or to close described discharge port (19);
Interior open Dump gate (25), it is fixedly installed in described rotating shaft (22), and rotate with described rotating shaft (22), there is the spoil transfer passage closed in described discharger body (20) the primary importance that spoil is led, and open the spoil transfer passage in described discharger body (20) so that the second position passed through of spoil;
Tooth bar (26), one end is connected to described slide outside hermatic door (24), and the other end engages with the turning gear (23) in described rotating shaft (22);
Driving oil cylinder (27), the first end is connected on described discharger body (20), and the second end is connected on described tooth bar (26).
6. continuous strength coal mining with gangue backfilling system according to claim 5, it is characterized in that, when described interior open Dump gate (25) is positioned at the second position, described interior open Dump gate (25) and slide outside hermatic door (24) superposition block are at described discharge port (19) place.
7. continuous strength coal mining with gangue backfilling system according to claim 2, it is characterized in that, by multiple spaced first pressure inlets (28) between described material strength supercharging discharge pipe (18) and described material Pneumatic conveying pipeline (13), described first pressure inlet (28) is connected to described material Pneumatic conveying pipeline (13) from described material strength supercharging discharge pipe (18) along spoil conveying direction is oblique; By multiple spaced second pressure inlets (29) between described material strength pressure-increasing unit pipeline (17) and described material Pneumatic conveying pipeline (13), described second pressure inlet (29) is connected to described material Pneumatic conveying pipeline (13) from described material strength pressure-increasing unit pipeline (17) along spoil conveying direction is oblique.
8. continuous strength coal mining with gangue backfilling system according to claim 1, it is characterized in that, described material strength pressure-increasing unit pipeline (17) is all arranged at intervals with multiple slide valve (30) along spoil conveying direction, being provided with described slide valve (30) on first pressure inlet (28) of each described material strength supercharging discharge pipe (18), the end of described material Pneumatic conveying pipeline (13) is provided with pipe-line purging valve (31).
9. continuous strength coal mining with gangue backfilling system according to claim 1, it is characterised in that the height adjustable of described stop gauge (7).
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| GB688590A (en) * | 1950-02-17 | 1953-03-11 | Eickhoff Geb | Improvements in or relating to coal mining |
| CN102493839B (en) * | 2011-12-10 | 2013-12-25 | 太原理工大学 | Method for filling gob |
| CN102536313A (en) * | 2012-02-15 | 2012-07-04 | 新汶矿业集团有限责任公司协庄煤矿 | Gangue filling pneumatic conveying system |
| CN103016038B (en) * | 2012-12-14 | 2015-08-26 | 莱芜市万祥矿业有限公司 | A kind of method of coal mining and waste filling |
| CN103133031B (en) * | 2013-02-28 | 2015-05-20 | 中国矿业大学 | Method and equipment for separating, conveying and filling underground coal and gangues |
| CN103321675B (en) * | 2013-05-14 | 2015-06-10 | 中国矿业大学 | Method and equipment for pneumatically conveying and filling gangue in coal mine well |
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