CN110624850A - Automatic sorting device for lump coal and large gangue - Google Patents
Automatic sorting device for lump coal and large gangue Download PDFInfo
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- CN110624850A CN110624850A CN201911031846.0A CN201911031846A CN110624850A CN 110624850 A CN110624850 A CN 110624850A CN 201911031846 A CN201911031846 A CN 201911031846A CN 110624850 A CN110624850 A CN 110624850A
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- sorting
- conveying belt
- carding mechanism
- controller
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- 239000003245 coal Substances 0.000 title claims abstract description 58
- 239000000463 material Substances 0.000 claims abstract description 144
- 238000009960 carding Methods 0.000 claims abstract description 66
- 238000001514 detection method Methods 0.000 claims abstract description 36
- 238000012216 screening Methods 0.000 claims abstract description 28
- 238000007664 blowing Methods 0.000 claims abstract description 20
- 238000003860 storage Methods 0.000 claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims description 56
- 238000003825 pressing Methods 0.000 claims description 30
- 238000003892 spreading Methods 0.000 claims description 26
- 230000007480 spreading Effects 0.000 claims description 26
- 238000010408 sweeping Methods 0.000 claims description 19
- 238000000926 separation method Methods 0.000 claims description 3
- 230000008054 signal transmission Effects 0.000 claims description 3
- 239000010878 waste rock Substances 0.000 claims 1
- 230000008901 benefit Effects 0.000 description 6
- 244000007853 Sarothamnus scoparius Species 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 238000004939 coking Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 208000003464 asthenopia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/02—Measures preceding sorting, e.g. arranging articles in a stream orientating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/34—Sorting according to other particular properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/36—Sorting apparatus characterised by the means used for distribution
- B07C5/363—Sorting apparatus characterised by the means used for distribution by means of air
- B07C5/367—Sorting apparatus characterised by the means used for distribution by means of air using a plurality of separation means
Landscapes
- Sorting Of Articles (AREA)
Abstract
The invention discloses an automatic sorting device for lump coal and large gangue, which comprises an industrial personal computer, a controller, a raw coal hopper screening device, a sorting and conveying belt, a queuing device, a density detection device, an air blowing type material sorting unit and a material sorting and temporary storage unit; the screening device is arranged at a feed opening of the raw coal hopper, and the output short end of the screening device corresponds to the input end of the sorting conveying belt; the queuing device is used for carding the thickness of the materials conveyed by the sorting and conveying belt, and the density detection device is used for detecting the density of the materials carded on the sorting and conveying belt; the materials output from the output end of the conveying belt are blown by the air blowing type material classifying unit to be classified and screened and are temporarily stored in the material classifying and temporarily storing unit. The automatic sorting device for the lump coal and the large gangue provided by the invention realizes the automatic sorting of the large gangue in the lump coal and improves the product quality.
Description
Technical Field
The invention belongs to the technical field of coal identification and separation, and particularly relates to an automatic sorting device for lump coal and large gangue.
Background
At present, the gangue sorting of a coal preparation plant mainly adopts manual gangue sorting, and the method has the following defects:
firstly, as the gangue is mixed in the coal blocks, the surface color is close to that of the coal blocks, visual fatigue is easy to occur in manual long-time sorting, and the gangue is not easy to be sorted out completely;
secondly, as the gangue needs to be picked out on the belt, the field working environment is poor, and the labor intensity is high;
thirdly, the gangue cannot be completely sorted out, and the influence on the quality of coal is caused;
fourthly, the service life of follow-up lump coal crushing equipment is influenced, the production cost is increased, and the enterprise benefit is influenced.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides an automatic sorting device for lump coal and large gangue, which is used for realizing the automatic sorting of the large gangue in the lump coal and improving the product quality.
The technical scheme is as follows: in order to achieve the aim, the automatic sorting device for the lump coal and the large gangue comprises an industrial personal computer and a controller, wherein the industrial personal computer is in signal transmission connection with the controller;
the raw coal hopper controls blanking through the controller, the screening device is arranged at a blanking port of the raw coal hopper, and an output short end of the screening device corresponds to an input end of the sorting conveying belt;
the sorting device comprises a sorting conveying belt, a queuing device and a density detection device, wherein the queuing device and the density detection device are sequentially arranged along the conveying direction of the sorting conveying belt, the queuing device is used for carding the thickness of the material conveyed by the sorting conveying belt, the density detection device is used for detecting the density of the material carded on the sorting conveying belt, and a signal sending end of the density detection device is connected with a signal receiving end of a controller;
still including setting up in the air blowing type material classification unit and the categorised unit of keeping in of material of selecting separately conveyor's output, air blowing type material classification unit passes through controller control blows, and passes through from conveyor's output material the air blowing type material classification unit blows categorised screening and temporary storage in the categorised unit of keeping in of material.
Furthermore, the queuing device comprises a U-shaped groove, a material height detection device arranged in the U-shaped groove and a material thickness carding mechanism arranged in the U-shaped groove; the U-shaped groove is fixedly arranged on a rack of the sorting conveying belt and covers the sorting conveying belt; the material height detection device is used for detecting the height of the materials conveyed on the sorting and conveying belt and transmitting the detection result to the controller; and the controller judges whether to control the material thickness carding mechanism to carry out material thickness carding operation according to the detection result.
Further, the material thickness carding mechanism comprises a material pressing vibration carding mechanism and a material flat-pushing sweeping carding mechanism; the material pushes down vibration carding mechanism and pushes down and vibrate its thickness of cutting down to the material of sorting on the conveyer belt, the material is levelly pushed away and is swept the material of spreading out carding mechanism on sorting on the conveyer belt and be levelly pushed away and fan-shaped and spread out and cut down its thickness, and the material is levelly pushed away and is swept the direction of pushing away of spreading out carding mechanism to the material and is opposite with the direction of delivery of sorting conveyer belt.
Further, the material downward-pressing vibration carding mechanism comprises a pressing plate, a vibrating bar, a pressing plate connecting part and a hydraulic cylinder; the pressing plate is horizontally arranged across the sorting conveying belt; the vibrating rods are vertically distributed on the lower plate surface of the pressing plate; the hydraulic cylinder is vertically arranged at the bottom of the U-shaped groove downwards, and the pressing plate is fixedly connected with the telescopic end of the hydraulic cylinder through the pressing plate connecting part; the pressing plate drives the vibrating rod to move downwards synchronously through the driving of the hydraulic cylinder, the pressing plate presses materials on the sorting conveying belt downwards, and the vibrating rod is inserted into the materials on the sorting conveying belt;
the material flat-pushing sweeping and spreading carding mechanism comprises a push plate, an air cylinder, a sweeping and spreading carding mechanism connecting part and a sweeping and spreading carding mechanism; the push plate is vertically arranged across the sorting and conveying belt and is arranged on one side of the press plate, which is opposite to the material conveying direction of the sorting and conveying belt, and the bottom end of the push plate is flush with the lower plate surface of the press plate; the cylinder is fixedly arranged on the upper plate surface of the pressing plate and is in driving connection with the push plate, and the sweeping and carding mechanism is arranged on one side of the push plate, which is opposite to the material conveying direction of the sorting and conveying belt, through a sweeping and carding mechanism connecting part; the push plate drives the sweeping and spreading carding mechanism to synchronously translate along the direction opposite to the material conveying direction of the sorting and conveying belt through the driving of the air cylinder, the push plate horizontally pushes the materials on the sorting and conveying belt, and the sweeping and spreading carding mechanism sweeps and spreads the materials on the sorting and conveying belt in a fan shape;
sweep and share carding mechanism and include servo motor and with servo motor drive be connected sweep and share the pole, sweep the pole portion least significant end of sharing the pole and keep the parallel and level with clamp plate lower plate, and servo motor drive sweeps and share the pole and rotate the fan-shaped radian of sweeping the profile of sharing that constitutes and be 180.
Furthermore, the material height detection device comprises an infrared transmitter and an infrared receiver which are correspondingly arranged on the wall of the U-shaped groove, and a signal sending end of the infrared receiver is connected with a signal receiving end of the controller; the vibrating spear, the hydraulic cylinder, the air cylinder and the servo motor are all controlled by the controller.
Further, the air blowing type material classifying unit comprises a downward inclined high-pressure air gun and a horizontal high-pressure air gun; the downward-inclined high-pressure air gun and the horizontal sorting and conveying belt form an obtuse angle and are arranged above the output end of the sorting and conveying belt in an inclined manner, and the air blowing direction of the downward-inclined high-pressure air gun faces the material sorting and temporary storage unit; the horizontal high-pressure air gun is arranged below the sorting and conveying belt, and the air blowing direction of the horizontal high-pressure air gun is the same as the conveying direction of the sorting and conveying belt and faces the material sorting and temporary storage unit;
the material classifying and temporary storage unit comprises a gangue hopper, a clean coal hopper and a middling coal hopper which are sequentially arranged side by side along the conveying direction of the sorting conveying belt; the port of one side of the middling hopper, which is far away from the horizontal high-pressure air gun, is higher than the horizontal high-pressure air gun;
and electromagnetic valves are arranged on the feed opening of the raw coal hopper, the declined inclined high-pressure air gun and the horizontal high-pressure air gun, and are controlled to be opened and closed by the controller.
Further, the automatic sorting device further comprises a chute and a non-sorting conveying belt, wherein the chute corresponds to the screening hole area of the screening device, and the output end of the chute corresponds to the input end of the non-sorting conveying belt.
Further, the aperture of the screening hole of the screening device is 50 mm.
Has the advantages that: the automatic sorting device for the lump coal and the large gangue has the following beneficial effects:
1) after the materials pass through the screening device, the queuing device and the density detection device, the materials are divided into different products by the high-pressure air gun, so that the efficiency is high, and the data acquisition is timely, accurate and comprehensive;
2) the quality of coking coal is greatly improved, the influence of gangue on a crushing device is reduced, the quality of coke is improved, and the production benefit is increased;
3) greatly improve operational environment, reduce artifical working strength, reduce artifical input.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a side view of the queuing apparatus;
FIG. 3 is a front view of the queuing apparatus;
FIG. 4 is a first structural schematic diagram of a material height detection device and a material thickness carding mechanism;
FIG. 5 is a second schematic structural diagram of the material height detection device and the material thickness carding mechanism;
FIG. 6 is a top view of the material thickness carding mechanism in a material thickness carding state.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in attached figure 1, the automatic sorting device for the lump coal and the large gangue comprises an industrial personal computer 1 and a controller 2, wherein the industrial personal computer 1 is in signal transmission connection with the controller 2; the raw coal feeding device comprises a raw coal hopper 3, a screening device 4 and a sorting conveying belt 5, wherein the raw coal hopper 3 controls feeding through a controller 2, the screening device 4 is arranged at a feeding hole of the raw coal hopper 3, and the output short end of the screening device 4 corresponds to the input end of the sorting conveying belt 5; the sorting device is characterized by further comprising a queuing device 6 and a density detection device 7 which are sequentially arranged along the conveying direction of the sorting conveying belt 5, wherein the queuing device 6 is used for carding the thickness of the materials conveyed by the sorting conveying belt 5, the density detection device 7 is used for detecting the density of the materials carded on the sorting conveying belt 5, and a signal sending end of the density detection device 7 is connected with a signal receiving end of the controller 2; still including setting up in the air blowing type material classification unit 8 and the categorised unit 9 of keeping in of material of selecting separately conveyor belt 5's output, air blowing type material classification unit 8 passes through controller 2 control is blown, and passes through from the material of conveyor belt 5's output air blowing type material classification unit 8 is blown categorised the screening and is kept in temporarily material classification unit 9 of keeping in.
The automatic sorting device further comprises a chute 10 and a non-sorting conveying belt 11, wherein the chute 10 corresponds to the area of the screening hole of the screening device 4, and the output end of the chute 10 corresponds to the input end of the non-sorting conveying belt 11; the aperture of the screening holes of the screening device 4 is 50mm, the raw coal can be screened into two parts of more than or equal to 50mm and less than 50mm, the part of more than or equal to 50mm enters the sorting conveying belt 5, and the part of less than 50mm is conveyed to the non-sorting conveying belt 11 through the chute 10 to the next working section.
As shown in fig. 2 to 6, the queuing device 6 includes a U-shaped groove 61, a material height detecting device 62 disposed in the U-shaped groove 61, and a material thickness carding mechanism 63 disposed in the U-shaped groove 61; the U-shaped groove 61 is fixedly arranged on the rack 51 of the sorting conveying belt 5 and covers the sorting conveying belt 5; the material height detection device 62 is used for detecting the height of the material conveyed on the sorting and conveying belt 5 and transmitting the detection result to the controller 2; and the controller 2 judges whether to control the material thickness carding mechanism 63 to carry out material thickness carding operation according to the detection result. The automatic queuing and carding of the materials on the sorting conveying belt 5 are realized, the ordered conveying of the materials is guaranteed, the blockage is avoided, the density detection of the materials on the sorting conveying belt 5 is carried out by the density detection device 7 which is more convenient to follow-up use, and the accuracy of the density detection is improved.
The material thickness carding mechanism 63 comprises a material pressing vibration carding mechanism 631 and a material flat-pushing sweeping and spreading carding mechanism 632; the material pushes down vibration carding mechanism 631 pushes down and vibrates to cut down its thickness to the material on selecting conveyor belt 5, the material is levelly pushed to sweep and is spread out carding mechanism 632 and cut down its thickness to the material on selecting conveyor belt 5 and fan-shaped sweeping, and the material is levelly pushed to sweep and is spread out carding mechanism 632 and is opposite to the direction of delivery of selecting conveyor belt 5 to the direction of the flat push of material. In the invention, the material is pressed down to reduce the thickness, and the vibration mode is increased in the pressing process, so that the pressing reduction operation of the material is more facilitated; and then the extruded and accumulated materials are spread evenly to further reduce the thickness, and a spreading mode is additionally arranged in the flat pushing process, so that the flat pushing reduction operation of the materials is more facilitated. The invention has the advantages of thorough and comprehensive material thickness carding, good effect and high efficiency.
The material pressing vibration carding mechanism 631 comprises a pressure plate 6311, a vibrating bar 6312, a pressure plate connecting part 6313 and a hydraulic cylinder 6314; the pressing plate 6311 is horizontally arranged across the sorting conveying belt 5; the vibrating rods 6312 are vertically distributed on the lower plate surface of the pressing plate 6311; the hydraulic cylinder 6314 is vertically arranged at the bottom of the inner groove of the U-shaped groove 61 downwards, and the pressure plate 6311 is fixedly connected with the telescopic end of the hydraulic cylinder 6314 through a pressure plate connecting part 6313; the pressure plate 6311 drives the vibrating rod 6312 to move downwards synchronously through the hydraulic cylinder 6314, the pressure plate 6311 presses down the materials on the sorting and conveying belt 5, and the vibrating rod 6312 is inserted into the materials on the sorting and conveying belt 5;
the material horizontal pushing, spreading and carding mechanism 632 comprises a push plate 6321, an air cylinder 6322, a spreading and carding mechanism connecting part 6323 and a spreading and carding mechanism 6324; the push plate 6321 is vertically arranged across the sorting and conveying belt 5 and is arranged on one side, facing the material conveying direction of the sorting and conveying belt 5, of the pressure plate 6311, and the bottom end of the push plate 6321 is flush with the lower plate surface of the pressure plate 6311; the air cylinder 6322 is fixedly arranged on the upper plate surface of the pressing plate 6311 and is in driving connection with the push plate 6321, and the spreading and carding mechanism 6324 is arranged on one side of the push plate 6321, which is opposite to the material conveying direction of the sorting and conveying belt 5, through the spreading and carding mechanism connecting portion 6323; the push plate 6321 drives the spreading and carding mechanism 6324 to synchronously translate along the direction opposite to the material conveying direction of the sorting and conveying belt 5 through the driving of the air cylinder 6322, the push plate 6321 horizontally pushes the material on the sorting and conveying belt 5, and the spreading and carding mechanism 6324 spreads and sorts the material on the sorting and conveying belt 5 in a sector shape;
more specifically, the broom combing mechanism 6324 comprises a servo motor 63241 and a broom rod 63242 drivingly connected to the servo motor 63241, the lowest end of the rod portion of the broom rod 63242 is flush with the lower plate surface of the pressing plate 6311, and the arc of the fan-shaped broom profile formed by the rotation of the broom rod 63242 driven by the servo motor 63241 is 180 °.
The material height detection device 62 comprises an infrared emitter 621 and an infrared receiver 622 which are correspondingly arranged on the inner groove wall of the U-shaped groove 61, and a signal sending end of the infrared receiver 622 is connected with a signal receiving end of the controller 2; the vibrating bar 6312, the hydraulic cylinder 6314, the air cylinder 6322, and the servo motor 63241 are all controlled by the controller 2. Infrared emitter 621 transmission infrared ray is received by infrared receiver 622, when sorting the material thickness on the conveyor belt 5 and being thicker, will shelter from the infrared ray, leads to infrared receiver 622 not to receive the infrared ray, at this moment, leads to infrared receiver 622 to send signal to controller 2, and controller 2 control material thickness carding mechanism 63 carries out material thickness carding operation, and concrete step is as follows:
the method comprises the following steps: the vibrating rod 6312 starts to vibrate, then the hydraulic cylinder 6314 drives the pressing plate 6311 to drive the vibrating rod 6312 to synchronously move downwards, the pressing plate 6311 presses down the materials on the sorting and conveying belt 5, and the vibrating rod 6312 is inserted into the materials on the sorting and conveying belt 5;
step two: the servo motor 63241 starts, then, the cylinder 6322 drives the push plate 6321 to drive the sweeping and spreading carding mechanism 6324 to synchronously translate along the opposite direction of the material conveying direction of the sorting and conveying belt 5, the push plate 6321 horizontally pushes the material on the sorting and conveying belt 5, and the servo motor 63241 drives the sweeping and spreading rod 63242 to rotate to sweep the material in a sector sweeping and spreading profile cycle with the radian of 180 degrees.
As shown in fig. 1, the air blowing type material classifying unit 8 includes a downward inclined high pressure air gun 81 and a horizontal high pressure air gun 82; the lower inclined high-pressure air gun 81 and the horizontal sorting and conveying belt 5 form an obtuse angle and are arranged above the output end of the sorting and conveying belt 5 in an inclined manner, and the air blowing direction of the lower inclined high-pressure air gun 81 faces the material sorting and temporary storage unit 9; the horizontal high-pressure air gun 82 is arranged below the sorting and conveying belt 5, and the blowing direction of the horizontal high-pressure air gun 82 is the same as the conveying direction of the sorting and conveying belt 5 and faces the material classifying and temporary storage unit 9; the material classifying and temporary storage unit 9 comprises a gangue hopper 91, a clean coal hopper 92 and a middling coal hopper 93 which are sequentially arranged side by side along the conveying direction of the sorting conveying belt 5. The feed opening of the raw coal hopper 3, the lower inclined high-pressure air gun 81 and the horizontal high-pressure air gun 82 are all provided with electromagnetic valves 12, and all the electromagnetic valves 12 are controlled to be opened and closed by the controller 2.
The density detection device 7 outputs gangue, middlings and clean coal into three signals according to the absorption coefficient, the gangue signals are transmitted to the electromagnetic valve 12 on the downward inclined high-pressure air gun 81 through the controller 2, when the gangue signals exist, the electromagnetic valve 12 is opened instantly, the downward inclined high-pressure air gun 81 emits high-pressure air flow to blow the gangue in the raw coal into the corresponding gangue hopper 91, and the electromagnetic valve 12 is closed instantly when no gangue signal exists; the middling signal is transmitted to the electromagnetic valve 12 on the horizontal high-pressure air gun 82 through the controller 2, when the middling signal exists, the electromagnetic valve 12 is opened instantly, the horizontal high-pressure air gun 82 emits high-pressure airflow to blow middling in raw coal into the corresponding middling hopper 93, and when no middling signal exists, the electromagnetic valve 12 is closed instantly; when all the coal is clean coal, no signal is transmitted, the electromagnetic valve 12 on the downward-inclined high-pressure air gun 81 and the electromagnetic valve 12 on the horizontal high-pressure air gun 82 are instantly closed, the pressure of the downward-inclined high-pressure air gun 81 and the pressure of the horizontal high-pressure air gun 82 are automatically adjusted according to the absorption coefficient and the detection block size of the density detection device 7, and the separation of gangue, clean coal and middling coal is efficiently and quickly realized.
Gangue in the gangue hopper 91 and middling in the middling hopper 93 are transported to a storage place by a transporting device for storage, and clean coal in the clean coal hopper 92 is processed in the next working section.
It is noted that the port of the middling bunker 93 on the side away from the horizontal high-pressure air gun 82 is higher than the horizontal high-pressure air gun 82, so as to prevent middling from being blown out.
The invention also has the following advantages:
4) after the materials pass through the screening device, the queuing device and the density detection device, the materials are divided into different products by the high-pressure air gun, so that the efficiency is high, and the data acquisition is timely, accurate and comprehensive;
5) the quality of coking coal is greatly improved, the influence of gangue on a crushing device is reduced, the quality of coke is improved, and the production benefit is increased;
6) greatly improve operational environment, reduce artifical working strength, reduce artifical input.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (8)
1. The utility model provides a lump coal bold waste rock automatic separation device which characterized in that: the industrial personal computer (1) is in signal transmission connection with the controller (2);
the raw coal feeding device is characterized by further comprising a raw coal hopper (3), a screening device (4) and a sorting conveying belt (5), wherein the raw coal hopper (3) controls feeding through the controller (2), the screening device (4) is arranged at a feeding hole of the raw coal hopper (3), and the output short end of the screening device (4) corresponds to the input end of the sorting conveying belt (5);
the sorting device is characterized by further comprising a queuing device (6) and a density detection device (7) which are sequentially arranged along the conveying direction of the sorting conveying belt (5), wherein the queuing device (6) is used for carding the thickness of the materials conveyed by the sorting conveying belt (5), the density detection device (7) is used for detecting the density of the materials carded on the sorting conveying belt (5), and a signal sending end of the density detection device (7) is connected with a signal receiving end of the controller (2);
still including setting up in air blowing type material classification unit (8) and the categorised unit of keeping in of material (9) of the output of selecting separately conveyor belt (5), air blowing type material classification unit (8) are passed through controller (2) control is blown, and passes through from the material of the output of conveyor belt (5) air blowing type material classification unit (8) are blown categorised screening and temporary storage in the categorised unit of keeping in of material (9).
2. The automatic sorting device for lump coal and large gangue as claimed in claim 1, wherein: the queuing device (6) comprises a U-shaped groove (61), a material height detection device (62) arranged in the U-shaped groove (61) and a material thickness carding mechanism (63) arranged in the U-shaped groove (61); the U-shaped groove (61) is fixedly arranged on a rack (51) of the sorting conveying belt (5) and covers the sorting conveying belt (5); the material height detection device (62) is used for detecting the height of the materials conveyed on the sorting conveying belt (5) and transmitting the detection result to the controller (2); and the controller (2) judges whether to control the material thickness carding mechanism (63) to carry out material thickness carding operation or not according to the detection result.
3. The automatic sorting device for lump coal and large gangue as claimed in claim 2, wherein: the material thickness carding mechanism (63) comprises a material pressing vibration carding mechanism (631) and a material flat-pushing sweeping carding mechanism (632); the material pushes down vibration carding mechanism (631) and pushes down and vibrate the material that selects on conveyor belt (5) and reduce its thickness, the material is levelly pushed and is swept and spread carding mechanism (632) and carry out the flatting to the material that selects on conveyor belt (5) and spread and reduce its thickness with fan-shaped sweeping, and the material is levelly pushed and is swept and spread carding mechanism (632) and is opposite to the direction of delivery of selecting separately conveyor belt (5) to the flatting direction of pushing down of material.
4. The automatic sorting device for lump coal and large gangue as claimed in claim 3, wherein: the material pressing vibration carding mechanism (631) comprises a pressure plate (6311), a vibrating bar (6312), a pressure plate connecting part (6313) and a hydraulic cylinder (6314); the pressing plate (6311) is horizontally arranged across the sorting conveying belt (5); the vibrating rods (6312) are vertically distributed on the lower plate surface of the pressing plate (6311); the hydraulic cylinder (6314) is vertically arranged at the bottom of the U-shaped groove (61) downwards, and the pressure plate (6311) is fixedly connected with the telescopic end of the hydraulic cylinder (6314) through a pressure plate connecting part (6313); the pressing plate (6311) drives the vibrating bar (6312) to move downwards synchronously through a hydraulic cylinder (6314), the pressing plate (6311) presses down the materials on the sorting conveying belt (5), and the vibrating bar (6312) is inserted into the materials on the sorting conveying belt (5);
the material flat-pushing spreading and carding mechanism (632) comprises a push plate (6321), an air cylinder (6322), a spreading and carding mechanism connecting part (6323) and a spreading and carding mechanism (6324); the push plate (6321) is vertically arranged across the sorting conveying belt (5), is arranged on one side of the pressing plate (6311) opposite to the material conveying direction of the sorting conveying belt (5), and the bottom end of the push plate (6321) is flush with the lower plate surface of the pressing plate (6311); the air cylinder (6322) is fixedly arranged on the upper plate surface of the pressing plate (6311) and is in driving connection with the push plate (6321), and the spreading and carding mechanism (6324) is arranged on one side, facing the material conveying direction of the sorting and conveying belt (5), of the push plate (6321) through the spreading and carding mechanism connecting part (6323); the push plate (6321) drives the sweeping and spreading carding mechanism (6324) to synchronously translate along the direction opposite to the material conveying direction of the sorting and conveying belt (5) through the driving of the air cylinder (6322), the push plate (6321) pushes the materials on the sorting and conveying belt (5) horizontally, and the sweeping and spreading carding mechanism (6324) sweeps and spreads the materials on the sorting and conveying belt (5) in a sector shape;
sweep and spread carding mechanism (6324) and include servo motor (63241) and sweep and spread pole (63242) with servo motor (63241) drive connection, sweep and spread the pole portion lowest end of pole portion of pole (63242) and keep the parallel and level with clamp plate (6311) lower plate, and servo motor (63241) drive is swept the pole (63242) and is rotated the radian of the fan-shaped profile of sweeping of constitution and is 180.
5. The automatic sorting device for lump coal and large gangue as claimed in claim 4, wherein: the material height detection device (62) comprises an infrared emitter (621) and an infrared receiver (622) which are correspondingly arranged on the inner wall of the U-shaped groove (61), and a signal sending end of the infrared receiver (622) is connected with a signal receiving end of the controller (2); the vibrating rod (6312), the hydraulic cylinder (6314), the air cylinder (6322) and the servo motor (63241) are all controlled by the controller (2).
6. The automatic sorting device for lump coal and large gangue as claimed in claim 1, wherein: the air blowing type material classifying unit (8) comprises a downward inclined high-pressure air gun (81) and a horizontal high-pressure air gun (82); the downward inclined high-pressure air guns (81) form an obtuse angle with the horizontal sorting and conveying belt (5) and are arranged above the output end of the sorting and conveying belt (5), and the air blowing direction of the downward inclined high-pressure air guns (81) faces the material sorting and temporary storage unit (9); the horizontal high-pressure air guns (82) are arranged below the sorting and conveying belt (5), and the blowing direction of the horizontal high-pressure air guns (82) is the same as the conveying direction of the sorting and conveying belt (5) and faces the material sorting and temporary storage unit (9);
the material classifying and temporary storage unit (9) comprises a gangue hopper (91), a clean coal hopper (92) and a middling coal hopper (93) which are sequentially arranged side by side along the conveying direction of the sorting conveying belt (5); the port of one side of the middling hopper (93), which is far away from the horizontal high-pressure air gun (82), is higher than the horizontal high-pressure air gun (82);
the feed opening of the raw coal hopper (3), the downward-inclined high-pressure air gun (81) and the horizontal high-pressure air gun (82) are respectively provided with an electromagnetic valve (12), and all the electromagnetic valves (12) are controlled to be opened and closed by the controller (2).
7. The automatic sorting device for lump coal and large gangue as claimed in claim 1, wherein: the automatic sorting device is characterized by further comprising a chute (10) and a non-sorting conveying belt (11), wherein the chute (10) corresponds to the area of the screening hole of the screening device (4), and the output end of the chute (10) corresponds to the input end of the non-sorting conveying belt (11).
8. The automatic sorting device for lump coal and large gangue as claimed in claim 1, wherein: the aperture of the screening hole of the screening device (4) is 50 mm.
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