CN113638768B - Underground gangue powder transportation system with buffer device and use method - Google Patents
Underground gangue powder transportation system with buffer device and use method Download PDFInfo
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- CN113638768B CN113638768B CN202110984589.3A CN202110984589A CN113638768B CN 113638768 B CN113638768 B CN 113638768B CN 202110984589 A CN202110984589 A CN 202110984589A CN 113638768 B CN113638768 B CN 113638768B
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- 239000000843 powder Substances 0.000 title claims abstract description 271
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000004537 pulping Methods 0.000 claims abstract description 63
- 238000007599 discharging Methods 0.000 claims description 26
- 239000002699 waste material Substances 0.000 claims description 9
- 230000003993 interaction Effects 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
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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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F13/00—Transport specially adapted to underground conditions
- E21F13/06—Transport of mined material at or adjacent to the working face
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
Abstract
The invention provides a downhole gangue powder conveying system with a buffer device and a use method, wherein the buffer device is added in the system, so that gangue powder generated in a crushing system can be buffered conveniently, and simultaneously, the gangue powder can be continuously supplied to a pulping system through the buffer device.
Description
Technical Field
The invention relates to the technical field of mining, in particular to a downhole gangue powder conveying system with a buffer device and a using method.
Background
According to the feedback of the field test engineering, in the underground grouting filling process, uneven feeding of gangue blocks and incomplete matching of a crushing system and a pulping system can influence normal operation of grouting filling. At present, in the aspect of coal mine production, for equipment which cannot be completely matched, a method for adding a buffer device is adopted to realize continuous operation of the whole production system. Therefore, for grouting filling, it is necessary to develop a gangue powder buffer device to solve the problems of uneven material supply of gangue blocks and mismatch between the crushing system and the pulping system.
Disclosure of Invention
Aiming at the problems of uneven feeding of gangue blocks and mismatching between a crushing system and a pulping system in the prior art, the invention provides an underground gangue powder conveying system with a caching device and a using method.
The invention is realized by the following technical scheme:
the underground gangue powder conveying system with the buffer device comprises a feeder, a crushing system, a gangue powder buffer device, a pulping system and a control cabinet; the output end of the feeder is connected to the input end of the crushing system, the output end of the crushing system is connected to the input end of the gangue powder buffer device, and the output end of the gangue powder buffer device is connected to the pulping system;
the gangue powder buffer device comprises a porous bottom discharge conveyor, a gangue powder transfer belt and a bin body; the input end of the porous bottom discharge conveyor is connected with the output end of the crushing system; the porous bottom discharge conveyor is provided with a plurality of discharging holes, the bin body comprises a plurality of gangue powder bins, and the output ends of the plurality of discharging holes respectively correspond to the input ends of the plurality of gangue powder bins; gangue powder is input into the gangue powder bin through a discharging hole on the porous bottom discharge conveyor, and a gangue powder transfer belt is assembled at the output end of the gangue powder bin; the output end of the gangue powder transfer belt is connected to a pulping system; the output end of the gangue powder bin is provided with a small feeder for throwing the gangue powder in the gangue powder bin onto a gangue powder transferring belt;
the control cabinet is internally provided with a controller, the input end of the controller is connected with a signal input module, the output end of the controller is connected with a switch signal module, a variable frequency output module and a fixed frequency output module, and the output end of the fixed frequency output module is connected with a feeder; the output end of the variable frequency output module is connected with a small feeder; the switch signal module is connected with a plurality of blanking holes; the input end of the signal input module is connected with an upper level gauge and a lower level gauge;
the feeding level gauge is arranged at the top end of the side wall of the gangue powder bin, and the discharging level gauge is arranged at the bottom end of the side wall of the gangue powder bin.
Preferably, the controller is provided with a man-machine interaction module, and the input end of the man-machine interaction module is connected with the output end of the controller and is used for displaying detection signals of the loading level gauge and the unloading level gauge.
Preferably, the output end of the controller is connected with a plurality of pushing plates through the control module, and the pushing plates are correspondingly assembled on the upstream sides of a plurality of discharging holes of the porous bottom discharge conveyor respectively.
Preferably, a first belt is connected between the feeder and the crushing system.
Preferably, a second belt is connected between the crushing system and the porous bottom discharge conveyor.
Preferably, a third belt is connected between the gangue powder transfer belt and the pulping system.
Preferably, the porous bottom discharge conveyor is positioned right above the gangue powder bins, the plurality of discharging holes are respectively aligned with the input ends of the gangue powder bins, and the gangue powder transfer belt is positioned right below the gangue powder bins.
The application method of the underground gangue powder transportation system with the buffer device is based on the underground gangue powder transportation system, and comprises the following steps of,
putting the gangue blocks into a feeder, transporting the gangue blocks onto a crushing system by the feeder, crushing the gangue blocks into gangue powder by the crushing system, and inputting the gangue powder into a gangue powder buffer device;
when the gangue powder enters the gangue powder buffer device, all the blanking holes of the porous bottom discharge conveyor are opened, the gangue powder is sequentially input into a first gangue powder bin through a first blanking hole along with the operation of the porous bottom discharge conveyor, and when the first gangue powder bin is monitored to be full, the first blanking hole is closed; the porous bottom discharge conveyor sequentially inputs the waste powder into a second waste powder bin through a second discharging hole; when the second gangue powder bin is monitored to be full, the second discharging opening is closed, the porous bottom discharge conveyor sequentially runs gangue powder into a plurality of gangue powder bins, and the operation is stopped until all gangue powder bins are full;
when the pulping system is operated, a small feeder of a first gangue powder bin is opened, so that the gangue powder falls onto a gangue powder transferring belt, and the gangue powder transferring belt simultaneously transfers the gangue powder into the pulping system for pulping; when the first gangue powder bin is empty, the small feeder of the second gangue powder bin is opened, so that the gangue powder falls onto the gangue powder transferring belt, and the gangue powder transferring belt simultaneously conveys the gangue powder into a pulping system for pulping; sequentially opening all small feeders of the gangue powder bins to enable the gangue powder to fall onto a gangue powder transferring belt, and simultaneously, the gangue powder transferring belt conveys the gangue powder into a pulping system for pulping;
gangue powder is continuously and sequentially input into a plurality of gangue powder bins through a porous bottom discharge conveyor while pulping of a pulping system, so that a closed cycle is formed by an underground gangue powder conveying system until grouting and filling are completed.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention provides a downhole gangue powder conveying system with a buffer device, wherein the buffer device is added in the system, so that gangue powder generated in a crushing system can be buffered conveniently, and simultaneously, the gangue powder can be continuously supplied to a pulping system through the buffer device.
Further, a man-machine interaction module is arranged on the controller, the input end of the man-machine interaction module is connected with the output end of the controller and used for displaying detection signals of the loading level gauge and the unloading level gauge, and the running condition of the system can be detected in real time.
Further, the output end of the controller is connected with a plurality of pushing plates through the control module, and the pushing plates are correspondingly assembled on the upstream sides of a plurality of discharging holes of the porous bottom discharge conveyor respectively, so that gangue powder is pushed into the gangue powder bin through the pushing plates.
Further, a first belt is connected between the feeder and the crushing system, so that the transmission performance between the feeder and the crushing system is improved.
Further, a second belt is connected between the crushing system and the porous bottom discharge conveyor, so that the transmission performance between the crushing system and the porous bottom discharge conveyor is improved.
Further, a third belt is connected between the gangue powder transfer belt and the pulping system, so that the transmission performance between the gangue powder transfer belt and the pulping system is improved.
Further, the porous bottom discharge conveyor is located right above the gangue powder bins, the plurality of discharging holes are aligned with the input ends of the gangue powder bins respectively, gangue powder can flow into the gangue powder bins through the discharging holes conveniently, the gangue powder transfer belt is located right below the gangue powder bins, and the gangue powder transfer belt is convenient to convey the gangue powder passing through the gangue powder bins to the pulping system.
The use method of the underground gangue powder transportation system with the buffer device can achieve the purpose of adjusting the system by adding the gangue powder buffer device in the pulping of the crushing system and the pulping system, on one hand, the gangue powder generated by the crushing system can be stored, the gangue powder is used as a reserve for the pulping system, on the other hand, the gangue powder can be continuously supplied for the pulping system, the continuous operation of the grouting system is realized, and the grouting filling efficiency is remarkably improved.
Drawings
FIG. 1 is a plan view of a gangue powder buffer apparatus of the present invention;
FIG. 2 is a sectional layout view of the gangue powder buffer apparatus of the present invention.
In the figure: 1-a feeder; 2-a first belt; 3-a crushing system; a No. 4-second belt; 5-gangue powder buffer device; 6-third belt; 7-pulping system; 8-a porous bottom discharge conveyor; 9-gangue powder transfer belt; 10-a gangue powder bin; 11-a second gangue powder bin; 12-third gangue powder bin; 13-fourth gangue powder bin; 14-fifth gangue powder bin; 15-bin body; 16-small-sized feeder; 17-pushing plate; 18-a first blanking hole; 19-a second blanking hole; a No. 20-third blanking hole; a No. 21-fourth blanking hole; 22-fifth blanking hole; 23-a control cabinet.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The invention is described in further detail below with reference to the attached drawing figures:
referring to fig. 1 and 2, in one embodiment of the present invention, a system for transporting underground gangue powder with a buffer device is provided, which has a simple structure and is convenient to use, and can buffer the gangue powder generated by a crushing system on one hand and continuously supply the gangue powder for a pulping system on the other hand.
Specifically, the underground gangue powder conveying system comprises a feeder 1, a crushing system 3, a gangue powder buffer device 5, a pulping system 7 and a control cabinet 23; the output end of the feeder 1 is connected to the input end of the crushing system 3, the output end of the crushing system 3 is connected to the input end of the gangue powder buffer device 5, and the output end of the gangue powder buffer device 5 is connected to the pulping system 7;
the gangue powder buffer device 5 comprises a porous bottom discharge conveyor 8, a gangue powder transfer belt 9 and a bin body 15; the input end of the porous bottom discharge conveyor 8 is connected with the output end of the crushing system 3; the porous bottom discharge conveyor 8 is provided with a plurality of discharging holes, the bin body 15 comprises a plurality of gangue powder bins, and the output ends of the plurality of discharging holes respectively correspond to the input ends of the plurality of gangue powder bins; gangue powder is input into a gangue powder bin through a discharging hole on a porous bottom discharge conveyor 8, and a gangue powder transfer belt 9 is assembled at the output end of the gangue powder bin; the output end of the gangue powder transfer belt 9 is connected to the pulping system 7; a small feeder 16 is arranged at the output end of the gangue powder bin and is used for throwing the gangue powder in the gangue powder bin onto the gangue powder transfer belt 9;
the control cabinet 23 is internally provided with a controller, the input end of the controller is connected with a signal input module, the output end of the controller is connected with a switch signal module, a variable frequency output module and a fixed frequency output module, and the output end of the fixed frequency output module is connected with the feeder 1; the output end of the variable frequency output module is connected with a small feeder 16; the switch signal module is connected with a plurality of blanking holes; the input end of the signal input module is connected with an upper level gauge and a lower level gauge;
go up the charge level indicator setting on the lateral wall top in gangue powder storehouse, the charge level indicator setting is in the lateral wall bottom in gangue powder storehouse.
Specifically, a human-computer interaction module is arranged on the controller, and the input end of the human-computer interaction module is connected with the output end of the controller and is used for displaying detection signals of the loading level gauge and the unloading level gauge.
Specifically, the output end of the controller is connected with a plurality of pushing plates 17 through a control module, and the pushing plates 17 are correspondingly assembled on the upstream sides of a plurality of discharging holes of the porous bottom discharge conveyor 8 respectively.
Specifically, a first belt 2 is connected between the feeder 1 and the crushing system 3.
Specifically, a second belt 4 is connected between the crushing system 3 and the porous bottom discharge conveyor 8.
Specifically, a third belt 6 is connected between the gangue powder transfer belt 9 and the pulping system 7.
Specifically, the porous bottom discharge conveyor 8 is located right above the gangue powder bins, the plurality of discharging holes are aligned to the input ends of the gangue powder bins respectively, and the gangue powder transfer belt 9 is located right below the gangue powder bins.
The application method of the underground gangue powder transportation system with the buffer device is based on the underground gangue powder transportation system, and comprises the following steps of,
putting the gangue blocks into a feeder 1, transporting the gangue blocks onto a crushing system 3 by the feeder 1, crushing the gangue blocks into gangue powder by the crushing system 3, and inputting the gangue powder into a gangue powder buffer device 5;
when the gangue powder enters the gangue powder buffer device 5, all the blanking holes of the porous bottom discharge conveyor are opened, the gangue powder is sequentially input into a first gangue powder bin through a first blanking hole along with the operation of the porous bottom discharge conveyor, and when the first gangue powder bin is monitored to be full, the first blanking hole is closed; the porous bottom discharge conveyor sequentially inputs the waste powder into a second waste powder bin through a second discharging hole; when the second gangue powder bin is monitored to be full, the second discharging opening is closed, the porous bottom discharge conveyor sequentially runs gangue powder into a plurality of gangue powder bins, and the operation is stopped until all gangue powder bins are full;
when the pulping system 7 is operated, the small feeder 16 of the first gangue powder bin is opened, so that the gangue powder falls onto the gangue powder transferring belt 9, and meanwhile, the gangue powder transferring belt 9 transfers the gangue powder into the pulping system 7 for pulping; when the first gangue powder bin is empty, the small feeder 16 of the second gangue powder bin is opened, so that the gangue powder falls onto the gangue powder transferring belt 9, and meanwhile, the gangue powder transferring belt 9 conveys the gangue powder into the pulping system 7 for pulping; sequentially opening the small feeders 16 of all gangue powder bins to enable the gangue powder to fall onto the gangue powder transferring belt 9, and simultaneously, the gangue powder transferring belt 9 conveys the gangue powder into the pulping system 7 for pulping;
gangue powder is continuously and sequentially input into a plurality of gangue powder bins through the porous bottom discharge conveyor 8 while pulping by the pulping system 7, so that the underground gangue powder conveying system forms a closed cycle until one grouting and filling work is completed.
Examples
The gangue powder bin comprises a first gangue powder bin 10, a second gangue powder bin 11, a third gangue powder bin 12, a fourth gangue powder bin 13 and a fifth gangue powder bin 14; the blanking holes which are arranged on the porous bottom discharge conveyor 8 and correspond to the gangue storage bins in number comprise a first blanking hole 18, a second blanking hole 19, a third blanking hole 20, a fourth blanking hole 21 and a fifth blanking hole 22.
The hole bottom unloading conveyor 8 is positioned at a position 100mm above the gangue powder bin and hung on the top plate, and the gangue powder transfer belt 9 is positioned at a position 100mm below the gangue powder bin.
The specific work is as follows:
putting the gangue blocks into a feeder 1, transporting the gangue blocks onto a crushing system 3 by the feeder 1, crushing the gangue blocks into gangue powder with the diameter of less than 3mm by the crushing system 3, and inputting the gangue powder into a gangue powder buffer device 5;
when the second belt 4 conveys gangue powder to the gangue powder buffer device 5, all the blanking holes of the porous bottom discharge conveyor 8 are opened;
along with the operation of the porous bottom discharge conveyor 8, a push plate 17 on the porous bottom discharge conveyor 8 pushes gangue powder into a gangue powder bin 10 through a first blanking hole 18; when the waste powder bin 10 is monitored to be full, a first blanking hole 18 is closed, and a push plate 17 on the porous bottom discharge conveyor 8 pushes waste powder into the second waste powder bin 11 through a second blanking hole 19; when the second gangue powder bin 11 is monitored to be full, the second blanking hole 19 is closed, and the pushing plate 17 on the porous bottom discharge conveyor 8 pushes gangue powder to the third gangue powder bin 12 through the third blanking hole 20, so that the process is repeated until all gangue powder bins are full;
when the pulping system needs to operate, a small feeder 16 of the first gangue powder bin 10 is opened, so that the gangue powder falls into a gangue powder transfer belt 9, and then the gangue powder is conveyed to a pulping system 7 through a third belt 6 for pulping; when the first gangue powder bin 10 is empty, the small feeder 16 of the second gangue powder bin 11 is opened, and gangue powder is continuously supplied to the pulping system; when the second gangue powder bin 11 is empty, the small feeder 16 of the third gangue powder bin 12 is opened to continuously supply gangue powder for the pulping system;
when the third gangue powder bin 12 is empty, a small feeder 16 of the fourth gangue powder bin 13 is opened to continuously supply gangue powder for the pulping system; meanwhile, the crushing system is operated, the gangue blocks are crushed into gangue powder by 3, when the gangue powder is conveyed to the gangue powder buffer device 5 by the second belt 4, all the blanking holes of the porous bottom discharge conveyor 8 are opened, and along with the operation of the porous bottom discharge conveyor 8, the gangue powder is pushed into the first gangue powder bin 10 by the push plate 17 on the porous bottom discharge conveyor 8 through the first blanking hole 18, so that a loop is closed;
when the fourth gangue powder bin 13 is empty, the small feeder 16 of the fifth gangue powder bin 14 is opened to continuously supply gangue powder for the pulping system; when the fifth gangue powder bin 14 is empty, the small feeder 16 of the first gangue powder bin 10 is opened to continuously supply gangue powder for the pulping system; when the first gangue powder bin 10 is empty, the small feeder 16 of the second gangue powder bin 11 is opened, gangue powder is continuously supplied to the pulping system, and the cyclic crushing, buffering and pulping are performed until the grouting and filling work is completed.
Finally, it should be noted that: the above embodiments are only for illustrating the technical aspects of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those of ordinary skill in the art that: modifications and equivalents may be made to the specific embodiments of the invention without departing from the spirit and scope of the invention, which is intended to be covered by the claims.
Claims (7)
1. The underground gangue powder conveying system with the buffer device is characterized by comprising a feeder (1), a crushing system (3), a gangue powder buffer device (5), a pulping system (7) and a control cabinet (23); the output end of the feeder (1) is connected to the input end of the crushing system (3), the output end of the crushing system (3) is connected to the input end of the gangue powder buffer device (5), and the output end of the gangue powder buffer device (5) is connected with the pulping system (7);
the gangue powder buffer device (5) comprises a porous bottom discharge conveyor (8), a gangue powder transfer belt (9) and a bin body (15); the input end of the porous bottom discharge conveyor (8) is connected with the output end of the crushing system (3); a plurality of discharging holes are formed in the porous bottom discharge conveyor (8), the bin body (15) comprises a plurality of gangue bins, and the output ends of the plurality of discharging holes correspond to the input ends of the plurality of gangue bins respectively; gangue powder is input into a gangue powder bin through a discharging hole on a porous bottom discharge conveyor (8), and a gangue powder transfer belt (9) is assembled at the output end of the gangue powder bin; the output end of the gangue powder transfer belt (9) is connected to the pulping system (7); a small feeder (16) is arranged at the output end of the gangue powder bin and is used for throwing the gangue powder in the gangue powder bin onto a gangue powder transfer belt (9);
a controller is arranged in the control cabinet (23), the input end of the controller is connected with a signal input module, the output end of the controller is connected with a switch signal module, a variable frequency output module and a fixed frequency output module, and the output end of the fixed frequency output module is connected with the feeder (1); the output end of the variable frequency output module is connected with a small feeder (16); the switch signal module is connected with a plurality of blanking holes; the input end of the signal input module is connected with an upper level gauge and a lower level gauge;
the feeding level gauge is arranged at the top end of the side wall of the gangue powder bin, and the discharging level gauge is arranged at the bottom end of the side wall of the gangue powder bin;
the porous bottom discharge conveyor (8) is positioned right above the gangue powder bins, the plurality of discharging holes are respectively aligned with the input ends of the gangue powder bins, and the gangue powder transfer belt (9) is positioned right below the gangue powder bins.
2. The underground gangue powder transportation system with the buffer device of claim 1, wherein the controller is provided with a man-machine interaction module, and the input end of the man-machine interaction module is connected with the output end of the controller and is used for displaying detection signals of the loading level gauge and the unloading level gauge.
3. The underground gangue powder conveying system with the buffer device according to claim 1, wherein the output end of the controller is connected with a plurality of pushing plates (17) through a control module, and the pushing plates (17) are correspondingly assembled on the upstream sides of a plurality of discharging holes of the porous bottom discharge conveyor (8) respectively.
4. The underground gangue powder transport system with buffer device as claimed in claim 1, wherein a first belt (2) is connected between the feeder (1) and the crushing system (3).
5. The underground gangue powder transport system with buffer device as claimed in claim 1, wherein a second belt (4) is connected between the crushing system (3) and the porous bottom discharge conveyor (8).
6. The underground gangue powder transport system with the buffer device as claimed in claim 1, wherein a third belt (6) is connected between the gangue powder transfer belt (9) and the pulping system (7).
7. A method for using the underground gangue powder transportation system with a buffer device is characterized in that the underground gangue powder transportation system based on any one of claims 1-6 comprises the following steps,
putting the gangue blocks into a feeder (1), transporting the gangue blocks onto a crushing system (3) by the feeder (1), crushing the gangue blocks into gangue powder by the crushing system (3), and inputting the gangue powder into a gangue powder buffer device (5);
when the gangue powder enters the gangue powder buffer device (5), all the blanking holes of the porous bottom discharge conveyor are opened, the gangue powder is sequentially input into a first gangue powder bin through a first blanking hole along with the operation of the porous bottom discharge conveyor, and when the first gangue powder bin is monitored to be full, the first blanking hole is closed; the porous bottom discharge conveyor sequentially inputs the waste powder into a second waste powder bin through a second discharging hole; when the second gangue powder bin is monitored to be full, the second discharging opening is closed, the porous bottom discharge conveyor sequentially runs gangue powder into a plurality of gangue powder bins, and the operation is stopped until all gangue powder bins are full;
when the pulping system (7) is operated, a small feeder (16) of a first gangue powder bin is opened, so that the gangue powder falls onto a gangue powder transferring belt (9), and meanwhile, the gangue powder transferring belt (9) moves the gangue powder into the pulping system (7) for pulping; when the first gangue powder bin is empty, a small feeder (16) of the second gangue powder bin is opened, so that the gangue powder falls onto a gangue powder transfer belt (9), and meanwhile, the gangue powder transfer belt (9) conveys the gangue powder into a pulping system (7) for pulping; sequentially opening small feeders (16) of all gangue powder bins to enable gangue powder to fall onto a gangue powder transfer belt (9), and simultaneously enabling the gangue powder transfer belt (9) to move the gangue powder into a pulping system (7) for pulping;
gangue powder is continuously and sequentially input into a plurality of gangue powder bins through a porous bottom discharge conveyor (8) while pulping by a pulping system (7), so that a closed cycle is formed by an underground gangue powder conveying system until grouting and filling are completed.
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