CN117072163B - Air curtain type dust fall system for tunneling working face - Google Patents
Air curtain type dust fall system for tunneling working face Download PDFInfo
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- CN117072163B CN117072163B CN202311128443.4A CN202311128443A CN117072163B CN 117072163 B CN117072163 B CN 117072163B CN 202311128443 A CN202311128443 A CN 202311128443A CN 117072163 B CN117072163 B CN 117072163B
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- 239000000428 dust Substances 0.000 title claims abstract description 112
- 230000005641 tunneling Effects 0.000 title claims abstract description 59
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 252
- 238000003860 storage Methods 0.000 claims abstract description 120
- 238000007789 sealing Methods 0.000 claims abstract description 96
- 230000007246 mechanism Effects 0.000 claims abstract description 45
- 230000001105 regulatory effect Effects 0.000 claims abstract description 44
- 238000001514 detection method Methods 0.000 claims abstract description 14
- 230000007704 transition Effects 0.000 claims abstract description 13
- 238000003825 pressing Methods 0.000 claims abstract description 11
- 238000000889 atomisation Methods 0.000 claims abstract description 7
- 239000003245 coal Substances 0.000 claims description 31
- 230000009471 action Effects 0.000 claims description 30
- 239000007921 spray Substances 0.000 claims description 14
- 230000000903 blocking effect Effects 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 5
- 230000001629 suppression Effects 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 230000006855 networking Effects 0.000 description 10
- 230000008569 process Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 238000005507 spraying Methods 0.000 description 6
- 230000003044 adaptive effect Effects 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 238000005065 mining Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000008400 supply water Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/22—Equipment for preventing the formation of, or for removal of, dust
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/24—Remote control specially adapted for machines for slitting or completely freeing the mineral
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The air curtain type dust fall system for the tunneling working face is characterized in that a main body of the tunneling machine is provided with a hazard warning lamp and an Internet of things device control mechanism; the two Internet of things deformation identification control mechanisms are respectively arranged on the front side and the rear side of the heading machine and are composed of a connecting rod body, a pressure deformation detection device, an identification camera device and an Internet of things signal transmitter; the air pressure fan is arranged at the rear side above the heading machine; the dust source tracking type compressed air fog curtain self-moving mechanism is positioned above the heading machine and consists of an air duct connecting ring, an adjustable fog curtain generating device, a telescopic air duct and an electric hydraulic support; the air duct connecting ring is connected with the air pressing fan through a transition air duct; the adjustable fog curtain generating device is coaxially arranged at the front side of the air duct connecting ring and consists of a water storage bottom cover, a sealing gasket, a fog curtain top cover, an atomization nozzle, a water pressure regulating piece, an electric telescopic buckle and an electric hydraulic rod; the telescopic air duct is respectively connected with an air duct connecting ring and an adjustable fog curtain generating device. The system can efficiently remove dust generated by a tunneling working face.
Description
Technical Field
The invention belongs to the technical field of industrial energy conservation and dust removal, and particularly relates to an air curtain type dust fall system for a tunneling working face.
Background
Mineral dust is one of the most serious hazards in coal mine production, and the large-scale pushing of a heading machine remarkably improves the mechanization level and efficiency of the heading operation, but leads to the sharp rise of dust concentration of a heading face. Various unavoidable problems, such as a great deal of dust generated in the mining process, shortage of energy under mine, shortage of water resources and the like, occur while the coal mining technology is increasingly developed. The fly ash generated in the operation process not only can cause great damage to the health of mining workers, but also can reduce the service life of mechanical and electronic equipment and increase the mining cost.
In order to effectively treat high-concentration dust in a fully-mechanized excavating working face, dust control technologies such as spraying, foam, a dust removing fan, a dust blocking air curtain and the like matched with a development machine are developed at home and abroad in recent years, and the technologies treat the dust generated by the development machine by using a full-coverage means, so that the waste of resources such as high-pressure water, high-pressure air and the like under mines is caused. Therefore, it is highly desirable to provide a high-efficiency dust treatment technology, which can optimize dust treatment and simultaneously effectively save water consumption.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a wind-fog curtain type dust fall system for a tunneling working face, which can efficiently remove dust on the working face, is beneficial to reducing the temperature of the working face, and can effectively save water consumption while optimizing dust treatment.
In order to achieve the above purpose, the invention provides an air curtain type dust fall system for a tunneling working face, which comprises a tunneling machine, a conveying belt, an Internet of things deformation identification control mechanism, a pressure air blower, a dust source tracking type pressure air curtain self-moving mechanism, a magnetized water tank, a dust concentration monitor and a pose sensor;
the conveying belt is arranged at the lower side of the coal dropping port of the heading machine;
the development machine comprises a development machine main body, a hazard warning lamp and an Internet of things device control unit; the hazard warning lamp is arranged at the top of the tunneling machine main body; the control unit of the Internet of things device is arranged on one side of the tunneling machine body and is respectively connected with the tunneling machine body and the hazard warning lamp;
the system comprises an Internet of things deformation identification control mechanism, an Internet of things device control unit and an Internet of things device control unit, wherein the number of the Internet of things deformation identification control mechanism is two, the Internet of things deformation identification control mechanism is respectively arranged on the front side and the rear side of a heading machine, the Internet of things deformation identification control mechanism consists of a connecting rod body, a pressure deformation detection device, an identification camera device and an Internet of things signal transmitter, the pressure deformation detection device is fixedly arranged at one end of the connecting rod body and is inserted into a wall body of a coal wall at one side, and is used for acquiring deformation signals of the coal wall and transmitting the acquired deformation signals to the Internet of things device control unit in real time through the Internet of things signal transmitter; the identification camera device is fixedly arranged at the other end of the connecting rod body and is used for collecting specific action image data of workers, identifying specific action instructions of the workers through the action image data and sending the identified action instructions to the control unit of the device of the Internet of things through the signal transmitter of the Internet of things; the internet of things signal transmitter is arranged at the top of the identification camera device and connected with the internet of things device control unit, and is used for transmitting data output by the internet of things device control unit to the outside;
The air pressure fan is arranged at the rear side above the heading machine, and a transition air duct extending along the heading direction is connected to the air pressure port of the air pressure fan;
the dust source tracking type air pressing fog curtain self-moving mechanism is arranged above the front end of the heading machine and consists of an air duct connecting ring, an adjustable fog curtain generating device, a telescopic air duct and an electric hydraulic support; the air duct connecting ring is of a circular ring structure, is fixedly connected with the front end part of the transition air duct and is communicated with a compressed air port of the compressed air fan through the transition air duct, and a plurality of magnetized water pipe through holes I are formed in the circumferential direction on the annular surface of the air duct connecting ring; the adjustable fog curtain generating device is coaxially arranged at the front side of the air duct connecting ring and consists of a water storage bottom cover, a sealing gasket, a fog curtain top cover, an atomizing nozzle, a water pressure regulating piece, an electric telescopic buckle and an electric hydraulic rod, wherein the water storage bottom cover is of a circular ring structure, two semi-annular water storage grooves are symmetrically formed in the middle of the annular surface at the front part of the water storage bottom cover, and the end parts of the two water storage grooves are separated by two strip-shaped separation parts; the water storage bottom cover is provided with a plurality of magnetized water pipe through holes II at the part where each water storage groove is located; the sealing gasket consists of an annular sealing ring in a central area, two arc-shaped sealing strips symmetrically arranged on the outer sides of the annular sealing ring, and two sealing connecting strips respectively connecting the two opposite ends of the annular sealing ring with the centers of the two arc-shaped sealing strips; the size of the annular sealing ring is matched with the size of the water storage bottom cover at the inner side parts of the two water storage grooves; the size of the two arc-shaped sealing strips is matched with the size of the water storage bottom cover at the outer side parts of the two water storage grooves, and sliding grooves are formed in the two end parts of each arc-shaped sealing strip; the size of the two sealing connecting strips is matched with the size of the two strip-shaped separation blocking parts; the back side of the sealing gasket is connected to the front side of the water storage bottom cover in a laminating mode, the back side of the annular sealing ring is attached to the inner side parts of the water storage bottom cover in the two water storage grooves, the two sealing connecting strips are correspondingly attached to the two strip-shaped separation blocking parts, and the two arc-shaped sealing strips are attached to the outer side parts of the water storage bottom cover in the two water storage grooves; a plurality of atomizing spray head mounting holes are uniformly formed in the middle of the annular surface of the fog curtain top cover along the circumferential direction, the plurality of atomizing spray head mounting holes correspond to the positions of the two water storage grooves, and the plurality of atomizing spray heads are respectively arranged in the atomizing spray head mounting holes in a one-to-one correspondence manner; the rear side surface of the fog curtain top cover is connected to the front side surface of the sealing gasket in a fitting way, the annular sealing ring seals the inner edge of the space between the water storage bottom cover and the fog curtain top cover in an annular way, the two arc-shaped sealing strips seal the outer edges of the opposite ends of the space between the water storage bottom cover and the fog curtain top cover in an arc-shaped way, and two sliding mounting grooves extending into the inner space of the water storage bottom cover and the inner space of the fog curtain top cover are formed in the area between the corresponding two ends of the two arc-shaped sealing strips; the two water pressure regulating sheets are of an arc-shaped structure, and are oppositely arranged in two sliding mounting grooves between the water storage bottom cover and the fog curtain top cover; the front side surface and the rear side surface of each water pressure regulating piece are simultaneously matched with the rear side surface of the fog curtain top cover and the front side surface of the water storage bottom cover in a sliding sealing manner, the two end parts of each water pressure regulating piece are respectively provided with sliding convex teeth matched with the sliding grooves, meanwhile, the two sliding convex teeth at the two end parts of each water pressure regulating piece are slidingly inserted into the two sliding grooves at the end parts at the same side of the two arc-shaped sealing strips, and the sliding convex teeth are matched with the sliding grooves in a sliding sealing manner; the sections of the two electric telescopic buckles are of U-shaped structures, arc structures which are concave inwards are arranged at the opening ends along the length direction, the two electric telescopic buckles are arranged on the outer sides of the two water pressure regulating sheets in a mutually opposite mode, two ends of each U-shaped opening of each electric telescopic buckle are fixedly connected with the water storage bottom cover and the fog curtain top cover respectively, and the two ends of each U-shaped opening of each electric telescopic buckle are used for tightly pressing and connecting the water storage bottom cover, the sealing gasket and the fog curtain top cover into an integrated structure; the two pairs of electric hydraulic rods are oppositely arranged in two spaces between the two hydraulic pressure adjusting sheets and the two electric telescopic buckles, one end of each pair of electric hydraulic rods extends into the U-shaped groove of the corresponding electric telescopic buckle and is fixedly connected with the electric telescopic buckle, and the other end of each pair of electric hydraulic rods is fixedly connected with the outer edge surface of the bow peak of the corresponding hydraulic pressure adjusting sheet; the telescopic air duct is coaxially arranged in the space between the air duct connecting ring and the adjustable fog curtain generating device, and two ends of the telescopic air duct are respectively connected with the front side surface of the air duct connecting ring and the rear side surface of the water storage bottom cover; the electric hydraulic supports are positioned between the air duct connecting ring and the adjustable fog curtain generating device and are uniformly distributed on the outer side of the telescopic air duct in the circumferential direction; the rear ends of the electric hydraulic supports are vertically and fixedly connected with the front side surface of the air duct connecting ring, and the front ends of the electric hydraulic supports are connected with the rear side surface of the water storage bottom cover through a plurality of universal ball heads which are correspondingly arranged; the first electromagnetic reversing valves and the second electromagnetic reversing valves are respectively connected with the control unit of the Internet of things device;
The water outlet of the magnetized water tank is fixedly connected with the water inlet ends of the magnetized water delivery pipes, the water inlet ends of the magnetized water delivery pipes are correspondingly connected with a plurality of flow control valves, and the water outlet ends of the magnetized water delivery pipes penetrate through the magnetized water pipe through holes I, are inserted into the magnetized water pipe through holes II in a one-to-one manner, and are communicated with the water storage grooves; the flow control valves are connected with the control unit of the Internet of things device;
the position and posture sensor is arranged on the tunneling machine main body, is connected with the control unit of the Internet of things device, and is used for collecting the position and posture signals of the tunneling machine head in real time and sending the signals to the control unit of the Internet of things device;
the dust concentration monitor is connected with the control unit of the device of the Internet of things, is arranged on the main body of the heading machine and is close to the head of the heading machine, and is used for collecting dust concentration signals of the heading face and sending the dust concentration signals to the control unit of the device of the Internet of things.
Further, in order to improve the atomization effect, water can be sprayed on a dust source of a tunneling working face uniformly after being atomized, and then generated dust can be quickly settled in the tunneling process of a tunneling machine, and the aperture of the atomization nozzle is 1-5 mm.
Furthermore, in order to effectively reduce dust above the main body of the heading machine, the heading machine further comprises an onboard magnetized water storage tank and a fog curtain spray head, wherein the onboard magnetized water storage tank is arranged at a position behind the top of the main body of the heading machine; the fog curtain spray head is arranged at the rear end of the top of the tunneling machine main body, and the water inlet end of the fog curtain spray head is connected with the water outlet end of a water supply pump arranged in the airborne magnetized water storage tank through a water conveying pipeline; the water supply pump is connected with the control unit of the Internet of things device.
Further, in order to absorb dust generated when the main body of the heading machine falls off coal, so that the dust amount generated in the heading working process is further reduced, the dust collector is positioned at the rear side of the heading machine and at the upper side of the conveying belt, and a dust inlet of the dust collector is arranged close to the side of the heading machine.
Further, in order to ensure that the air pressure fan and the dust source tracking type air pressure fog curtain self-moving mechanism can be stably supported in the space above the heading machine, the air pressure fan is hoisted on the rear side above the heading machine through a single rail, and an air duct connecting ring in the dust source tracking type air pressure fog curtain self-moving mechanism is hoisted above the heading machine through the single rail.
According to the invention, the danger warning lamp is arranged at the top of the tunneling machine main body, so that a person at a distance can find a warning condition in time when warning. The conveying belt is arranged at the lower side of the coal dropping opening of the heading machine, so that the mined coal can be conveniently conveyed to the outside. Two water storage grooves are symmetrically formed in the annular surface of the water storage bottom cover in the adjustable fog curtain generating device, a plurality of atomizing nozzle mounting holes are formed in corresponding parts of the fog curtain top cover in the adjustable fog curtain generating device, and a plurality of atomizing nozzles are correspondingly arranged in the plurality of atomizing nozzle mounting holes one by one, so that liquid entering the water storage grooves can be conveniently used as atomizing liquid of the atomizing nozzles, and therefore, high-pressure water is only required to be fed into the water storage grooves, and effective dust fall and temperature reduction operation can be carried out on the direction of a tunneling surface by using the atomizing nozzles; the sealing gasket is arranged between the water storage bottom cover and the fog curtain top cover, two water pressure regulating sheets are arranged between two arc sealing strips on the sealing gasket and in two arc spaces outside the sealing ring, each water pressure regulating sheet is in sliding sealing fit with the water storage bottom cover and the fog curtain top cover, and meanwhile, the sliding convex teeth at the end parts of each water pressure regulating sheet are in sliding insertion fit with the sliding grooves at the end parts of the arc sealing strips on the sealing gasket, so that the sealing fit between the two water pressure regulating sheets and the water storage bottom cover, the fog curtain top cover and the sealing gasket is ensured all the time in the process of mutual approaching and mutual separating of the two water pressure regulating sheets, the liquid entering the two water storage grooves is prevented from leaking, the pressure of the enclosed water storage space is ensured to be stable, and the stable pressure water supply of the atomizing nozzle can be further ensured; the two electric telescopic buckles are arranged on the outer sides of the two hydraulic pressure regulating sheets, the two ends of each electric telescopic buckle are fixedly connected with the water storage bottom cover and the fog curtain top cover respectively, meanwhile, a pair of electric hydraulic rods are arranged between each horizontal regulating sheet and the electric telescopic buckle, a pair of electromagnetic reversing valves for controlling the pair of electric hydraulic rods are connected with the control unit of the Internet of things device, the control unit of the Internet of things device can conveniently control the two pairs of electric hydraulic rods to synchronously act, and then the two hydraulic pressure regulating sheets can be utilized to change the areas of the two water storage grooves, so that the purposes of regulating the water pressure and the water flow can be achieved, the purpose of accurately controlling dust can be achieved, meanwhile, the water consumption of magnetized water can be effectively saved, and further, the electric hydraulic reversing valves can be matched with the dust concentration monitor arranged at the head part of a tunneling machine, so that the distance between the two hydraulic pressure regulating sheets can be controlled according to the dust concentration condition, the adaptive regulation of the fog curtain drop quantity can be achieved, and the accurate dust curtain operation can be more effectively and accurately controlled. Utilize flexible dryer to connect relative dryer go-between and the fog curtain generating device with adjustable set up, simultaneously, utilize a plurality of electronic hydraulic support connection dryer go-between and fog curtain generating device with adjustable in flexible dryer outside, can be convenient for adjust the distance between dryer go-between and the fog curtain generating device with adjustable through electronic hydraulic support, and then reach the purpose of adjusting the displacement of fog curtain generating device with adjustable in the tunneling direction, like this, the emergence position of fog curtain can be controlled to can carry out fixed point dust fall operation in a flexible way. Through being provided with the position appearance sensor that is used for gathering the machine head position appearance signal of dig in the entry driving machine main part, can be convenient for thing networking device control unit obtain the entry driving machine aircraft nose in real time for the relative position of entry driving machine main part, like this, be favorable to thing networking device control unit to control a plurality of electric hydraulic support's flexible volume according to the position of dust source, and then make the fog curtain shower nozzle be located the region of dust source certain within range all the time, reach the purpose of subsidence to accurate tracking of dust, of course, also can control the flexible position of two pairs of electric hydraulic stems according to the position of dust source, and then carry out adaptive regulation to the spraying volume of fog curtain shower nozzle. A plurality of magnetized water pipe through holes I are formed in the ring surface of the air duct connecting ring, a plurality of magnetized water pipe through holes II are formed in a water storage bottom cover on the adjustable fog curtain generating device, a plurality of magnetized water pipe water pipes connected with the magnetized water tank sequentially penetrate through the magnetized water pipe through holes I and then are inserted into the magnetized water pipe through holes II in a one-to-one correspondence mode, the magnetized water tank and the water storage groove can be effectively communicated, and then high-pressure water in the magnetized water tank can be utilized to supply water to the atomizing nozzle. The air pressure fan is hung above the heading machine in an inclined manner, and the dust source tracking type air pressure fog curtain self-moving mechanism above the heading machine is connected with an air pressure port of the air pressure fan through the transition air duct, so that a fog curtain driven by wind power can be generated above the heading machine, and the fog curtain can be sprayed to the outside in a certain range, and therefore the dust fall effect of a heading face can be greatly improved. The pressure deformation detection device, the identification camera device and the signal emitter of the Internet of things are arranged in the deformation identification control mechanism of the Internet of things, and the pressure deformation detection device and the identification camera device are respectively arranged at two ends of the connecting rod body, so that deformation signals of the coal wall can be collected when the pressure deformation detection device is inserted into the wall body of the coal wall, the identification camera device can be used for collecting specific action image data of workers conveniently, and specific action instructions of the workers can be identified through the action image data; the front side and the rear side of the heading machine are respectively provided with the deformation identification control mechanism of the Internet of things, so that the coal wall deformation condition can be conveniently collected and the action instructions of workers can be conveniently identified at the front side and the rear side of the heading machine. Through the setting of thing networking signal transmitter, can be convenient for send the specific action instruction of workman who gathers coal wall deformation signal and discernment to thing networking device control unit, like this, thing networking device control unit can control the switching action of flow control valve according to the specific action instruction of workman, and then reaches the purpose that produces and stop of control fog curtain automatically through the action of workman. In addition, the control unit of the device of the internet of things can judge whether to continue tunneling work according to the deformation condition of the coal wall, and control the heading machine head to stop working when the deformation of the coal wall exceeds a set value, so as to stop tunneling work, and simultaneously, can control two pairs of electric hydraulic rods to synchronously drive two hydraulic adjusting pieces to move a certain distance in a direction away from each other, so as to effectively increase the amount of sprayed liquid drops, and can control piston rods in a plurality of electric hydraulic supports to synchronously extend out for a set distance, so that the spraying range is effectively increased, and the aim of improving the safety coefficient in the working process is fulfilled. Furthermore, the dangerous warning lamp can be controlled to flash and warn light in time when the deformation of the coal wall exceeds a set value, so that the aim of warning in time is achieved.
The system carries out fixed-point fog curtain dust control operation on different dust producing positions of a tunneling machine during tunneling work through the data collected by the plurality of electric hydraulic supports arranged in the dust source tracking type air pressing fog curtain self-moving mechanism and the identified action instructions combined with the deformation identification control mechanism of the Internet of things, and meanwhile, the liquid drop quantity of the generated fog curtain can be conveniently regulated through the adjustable fog curtain generating device, so that the consumption of magnetized water is reduced to the greatest extent, and the aim of saving energy is fulfilled. The system can cover dust source to the greatest extent, carries out high-efficiency treatment on dust from the source in a fixed-point and quantitative mode, can help to reduce the temperature of a working surface, improves the dust treatment effect, and simultaneously improves the environmental protection effect, and has the advantages of low cost, safety, high efficiency, energy conservation, environmental protection and the like.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural diagram of a deformation identification control mechanism of the Internet of things in the invention;
FIG. 3 is an assembly schematic diagram of the deformation identification control mechanism of the Internet of things in the invention;
FIG. 4 is a schematic view of the overall structure of the heading machine of the present invention;
FIG. 5 is a schematic view of the overall structure of the dust source tracking type compressed air curtain self-moving mechanism of the invention;
FIG. 6 is an exploded view of the dust source tracking type compressed air curtain self-moving mechanism of the present invention;
FIG. 7 is an exploded view of the adjustable curtain generator of the present invention;
FIG. 8 is a schematic cross-sectional view taken in the direction C-C of FIG. 5;
FIG. 9 is a schematic diagram showing a state in which the adjustable curtain generating device controls the spraying amount in the present invention.
In the figure: 1. the wet dust collector, 2, a wind-pressing fan, 21, a transition air duct, 3, an Internet of things deformation identification control mechanism, 31, an identification camera device, 32, a pressure deformation detection device, 33, an Internet of things signal transmitter, 34, a connecting rod body, 4, a heading machine, 41, a hazard warning lamp, 42, an Internet of things device control unit, 43, a fog curtain spray nozzle, 44, an airborne magnetized water storage tank, 45, a heading machine main body, 5, a dust source tracking type wind-pressing fog curtain self-moving mechanism, 51, an air duct connecting ring, 511, magnetized water pipe through holes I, 52 and an adjustable fog curtain generating device, 521, water storage bottom, 5211, magnetized drinking water pipe through holes II, 5212, water storage grooves, 5213, magnetized drinking water pipes, 5214, strip-shaped blocking parts, 522, sealing gaskets, 5221, annular sealing rings, 5222, arc-shaped sealing strips, 5223, sealing connecting strips, 523, water pressure regulating sheets, 524, electric telescopic buckles, 525, fog curtain top covers, 526, atomizing nozzles, 527, electric hydraulic rods, 528, sliding convex teeth, 529, sliding grooves, 53, electric hydraulic supports, 54, telescopic air cylinders, 55, universal ball heads, 7, conveying belts, 8, magnetized water tanks, 9 and walls.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 to 9, the invention provides an air curtain type dust fall system for a tunneling working face, which comprises a tunneling machine 4, a conveying belt 7, an internet of things deformation identification control mechanism 3, a compressed air fan 2, a dust source tracking type compressed air curtain self-moving mechanism 5, a magnetized water tank 8, a dust concentration monitor and a pose sensor;
the conveying belt 7 is arranged at the lower side of the coal dropping port of the heading machine 4;
the heading machine 4 comprises a heading machine main body 45, a hazard warning lamp 41 and an Internet of things device control unit 42; the hazard warning lamp 41 is arranged at the top of the heading machine main body 45; the control unit 42 of the Internet of things device is arranged on one side of the tunneling machine body 45 and is respectively connected with the tunneling machine body 45 and the hazard warning lamp 41;
the number of the deformation identification control mechanisms 3 of the Internet of things is two, the deformation identification control mechanisms 3 of the Internet of things are respectively arranged on the front side and the rear side of the heading machine 4, the deformation identification control mechanisms 3 of the Internet of things are composed of a connecting rod body 34, a pressure deformation detection device 32, an identification camera device 31 and an Internet of things signal transmitter 33, the pressure deformation detection device 32 is fixedly arranged at one end of the connecting rod body 34 and is inserted into a wall body 9 of a coal wall at one side, and the deformation identification control mechanisms are used for acquiring deformation signals of the coal wall and transmitting the acquired deformation signals to the control unit 42 of the Internet of things through the signal transmitter 33 of the Internet of things in real time; the identifying camera device 31 is fixedly installed at the other end of the connecting rod 34, and is used for collecting specific action image data of a worker, identifying a specific action instruction of the worker through the action image data, and sending the identified action instruction to the control unit 42 of the internet of things device through the signal transmitter 33 of the internet of things device; the internet of things signal transmitter 33 is installed at the top of the identification camera device 31 and connected with the internet of things device control unit 42, and is used for transmitting data output by the internet of things device control unit 42 to the outside;
The air pressure fan 2 is arranged at the rear side above the heading machine 4, and a transition air duct 21 extending along the heading direction is connected to an air pressure port of the air pressure fan;
the dust source tracking type compressed air curtain self-moving mechanism 5 is arranged above the front end of the heading machine 4 and consists of an air duct connecting ring 51, an adjustable curtain generating device 52, a telescopic air duct 54 and an electro-hydraulic support 53; the air duct connecting ring 51 is in a circular ring structure, is fixedly connected with the front end part of the transition air duct 21, is communicated with a compressed air port of the compressed air fan 2 through the transition air duct 21, and is provided with a plurality of magnetized water pipe through holes I511 along the circumferential direction on the annular surface of the air duct connecting ring 51; the adjustable fog curtain generating device 52 is coaxially arranged at the front side of the air duct connecting ring 51, and is composed of a water storage bottom cover 521, a sealing gasket 522, a fog curtain top cover 525, an atomization nozzle 526, a water pressure adjusting piece 523, an electric telescopic buckle 524 and an electric hydraulic rod 527, wherein the water storage bottom cover 521 is of a circular ring structure, two semi-annular water storage grooves 5212 are symmetrically formed in the middle of the circular surface at the front part of the water storage bottom cover 521, and the ends of the two water storage grooves 5212 are separated by two strip-shaped separation parts 5214; the water storage bottom cover 521 is provided with a plurality of magnetized water pipe through holes II 5211 at the part where each water storage groove 5212 is positioned; the sealing gasket 522 is composed of an annular sealing ring 5221 located in the central area, two arc sealing strips 5222 symmetrically arranged outside the annular sealing ring 5221, and two sealing connecting strips 5223 respectively connecting opposite ends of the annular sealing ring 5221 and the centers of the two arc sealing strips 5222; the size of the annular sealing ring 5221 is matched with the size of the water storage bottom cover 521 at the inner side parts of the two water storage grooves 5212; the size of the two arc-shaped sealing strips 5222 is matched with the size of the water storage bottom cover 521 at the outer side parts of the two water storage grooves 5212, and sliding grooves 529 are formed in the two end parts of each arc-shaped sealing strip 5222; the two sealing connection strips 5223 are sized to fit the two strip-shaped barrier portions 5214; the back side of the sealing gasket 522 is attached to the front side of the water storage bottom cover 521, the back side of the annular sealing ring 5221 is attached to the inner side of the water storage bottom cover 521 in the two water storage grooves 5212, the two sealing connection strips 5223 are correspondingly attached to the two strip-shaped blocking parts 5214, and the two arc-shaped sealing strips 5222 are attached to the outer side of the water storage bottom cover 521 in the two water storage grooves 5212; a plurality of atomizer mounting holes are uniformly formed in the middle of the annular surface of the fog curtain top cover 525 along the circumferential direction, the plurality of atomizer mounting holes correspond to the positions of the two water storage grooves 5212, and the plurality of atomizer 526 are respectively arranged in the atomizer mounting holes in a one-to-one correspondence manner; the rear side of the fog curtain top cover 525 is connected to the front side of the sealing gasket 522 in a fitting manner, the annular sealing ring 5221 seals the inner edge of the space between the water storage bottom cover 521 and the fog curtain top cover 525 in an annular manner, the two arc-shaped sealing strips 5222 seal the outer edges of the opposite ends of the space between the water storage bottom cover 521 and the fog curtain top cover 525 in an arc-shaped manner, and two sliding mounting grooves extending into the inner space of the water storage bottom cover 521 and the fog curtain top cover 525 are formed in the area between the corresponding two ends of the two arc-shaped sealing strips 5222; the two water pressure regulating pieces 523 are in an arc-shaped structure, and the two water pressure regulating pieces 523 are oppositely arranged in the two sliding mounting grooves between the water storage bottom cover 521 and the fog curtain top cover 525; the front side and the rear side of each water pressure regulating piece 523 are simultaneously matched with the rear side of the fog curtain top cover 525 and the front side of the water storage bottom cover 521 in a sliding sealing manner, the two ends of each water pressure regulating piece 523 are respectively provided with a sliding convex tooth 528 matched with the sliding grooves 529, meanwhile, the two sliding convex teeth 528 at the two ends of each water pressure regulating piece 523 are slidingly inserted into the two sliding grooves 529 at the same side end of the two arc-shaped sealing strips 5222, and the sliding convex teeth 528 are matched with the sliding grooves 529 in a sliding sealing manner; the sections of the two electric telescopic buckles 524 are of U-shaped structures, arc structures which are concave inwards are arranged at the opening ends along the length direction, the two electric telescopic buckles 524 are arranged on the outer sides of the two water pressure regulating pieces 523 opposite to each other, two ends of the U-shaped opening of each electric telescopic buckle 524 are fixedly connected with the water storage bottom cover 521 and the fog curtain top cover 525 respectively, and the two electric telescopic buckles are used for tightly pressing and connecting the water storage bottom cover 521, the sealing gasket 522 and the fog curtain top cover 525 into an integrated structure; two pairs of electric hydraulic rods 527 are oppositely arranged in two spaces between the two hydraulic pressure adjusting pieces 523 and the two electric telescopic buckles 524, one end of each pair of electric hydraulic rods 527 extends into a U-shaped groove of the corresponding electric telescopic buckle 524 and is fixedly connected with the electric telescopic buckle 524, and the other end of each pair of electric hydraulic rods 527 is fixedly connected with the outer edge surface of the bow peak of the corresponding hydraulic pressure adjusting piece 523; the telescopic air duct 54 is coaxially arranged in the space between the air duct connecting ring 51 and the adjustable fog curtain generating device 52, and two ends of the telescopic air duct 54 are respectively connected with the front side surface of the air duct connecting ring 51 and the rear side surface of the water storage bottom cover 521; the plurality of electrohydraulic supports 53 are positioned between the air duct connecting ring 51 and the adjustable fog curtain generating device 52, and are evenly distributed on the outer side of the telescopic air duct 54 in the circumferential direction; the rear ends of the electro-hydraulic brackets 53 are vertically and fixedly connected with the front side surface of the air duct connecting ring 51, and the front ends of the electro-hydraulic brackets are connected with the rear side surface of the water storage bottom cover 521 through a plurality of universal ball heads 55 correspondingly arranged; the first electromagnetic directional valves correspondingly connected with the electro-hydraulic supports 53 and the second electromagnetic directional valves correspondingly connected with the two pairs of electro-hydraulic rods 527 are connected with the control unit 42 of the Internet of things device;
The water magnetizing tank 8 is installed at one side of the exterior of the tunneling machine main body 45, the water outlet of the water magnetizing tank 8 is fixedly connected with the water inlet ends of the plurality of magnetized water delivery pipes 5213, the water inlet ends of the plurality of magnetized water delivery pipes 5213 are correspondingly connected with a plurality of flow control valves, and the water outlet ends of the plurality of magnetized water delivery pipes 5213 pass through the plurality of magnetized water pipe through holes I511, are inserted into the plurality of magnetized water pipe through holes II 5211 in a one-to-one manner, and are communicated with the water storage groove 5212; the plurality of flow control valves are all connected with the internet of things device control unit 42;
the pose sensor is arranged on the tunneling machine body 45, is connected with the Internet of things device control unit 42, and is used for collecting the pose signal of the tunneling machine head in real time and sending the pose signal to the Internet of things device control unit 42;
the dust concentration monitor is connected with the control unit 42 of the internet of things device, is installed on the main body 45 of the heading machine and is close to the head of the heading machine, and is used for collecting dust concentration signals of the heading face and sending the dust concentration signals to the control unit 42 of the internet of things device.
In order to improve the atomization effect, the water can be sprayed on the dust source of the tunneling working face uniformly after being atomized, so that the generated dust can be quickly settled in the tunneling process of the tunneling machine, and the aperture of the atomization nozzle 526 is 1-5 mm.
In order to effectively reduce dust above the main body of the tunneling machine, the tunneling machine 4 further comprises an onboard magnetized water storage tank 44 and a fog curtain spray head 43, wherein the onboard magnetized water storage tank 44 is arranged at a position behind the top of the main body 45 of the tunneling machine; the fog curtain spray head 43 is arranged at the rear end of the top of the heading machine main body 45, and the water inlet end of the fog curtain spray head is connected with the water outlet end of a water supply pump arranged in the airborne magnetized water storage tank 44 through a water conveying pipeline; the water supply pump is connected with the control unit 42 of the internet of things device.
In order to absorb dust generated when the main body of the heading machine falls off coal, so as to further reduce the dust amount generated in the heading process, the dust collector comprises a wet dust collector 1, wherein the wet dust collector 1 is positioned at the rear side of the heading machine 4 and at the upper side of a conveying belt 7, and a dust inlet of the wet dust collector is arranged close to the side of the heading machine 4.
In order to ensure that the air pressure fan and the dust source tracking type air pressure mist curtain self-moving mechanism can be stably supported in the upper space of the heading machine, the air pressure fan 2 is hoisted on the rear side above the heading machine 4 through a single rail, and an air duct connecting ring 51 in the dust source tracking type air pressure mist curtain self-moving mechanism 5 is hoisted above the heading machine 4 through the single rail.
According to the invention, the danger warning lamp is arranged at the top of the tunneling machine main body, so that a person at a distance can find a warning condition in time when warning. The conveying belt is arranged at the lower side of the coal dropping opening of the heading machine, so that the mined coal can be conveniently conveyed to the outside. Two water storage grooves are symmetrically formed in the annular surface of the water storage bottom cover in the adjustable fog curtain generating device, a plurality of atomizing nozzle mounting holes are formed in corresponding parts of the fog curtain top cover in the adjustable fog curtain generating device, and a plurality of atomizing nozzles are correspondingly arranged in the plurality of atomizing nozzle mounting holes one by one, so that liquid entering the water storage grooves can be conveniently used as atomizing liquid of the atomizing nozzles, and therefore, high-pressure water is only required to be fed into the water storage grooves, and effective dust fall and temperature reduction operation can be carried out on the direction of a tunneling surface by using the atomizing nozzles; the sealing gasket is arranged between the water storage bottom cover and the fog curtain top cover, two water pressure regulating sheets are arranged between two arc sealing strips on the sealing gasket and in two arc spaces outside the sealing ring, each water pressure regulating sheet is in sliding sealing fit with the water storage bottom cover and the fog curtain top cover, and meanwhile, the sliding convex teeth at the end parts of each water pressure regulating sheet are in sliding insertion fit with the sliding grooves at the end parts of the arc sealing strips on the sealing gasket, so that the sealing fit between the two water pressure regulating sheets and the water storage bottom cover, the fog curtain top cover and the sealing gasket is ensured all the time in the process of mutual approaching and mutual separating of the two water pressure regulating sheets, the liquid entering the two water storage grooves is prevented from leaking, the pressure of the enclosed water storage space is ensured to be stable, and the stable pressure water supply of the atomizing nozzle can be further ensured; the two electric telescopic buckles are arranged on the outer sides of the two hydraulic pressure regulating sheets, the two ends of each electric telescopic buckle are fixedly connected with the water storage bottom cover and the fog curtain top cover respectively, meanwhile, a pair of electric hydraulic rods are arranged between each horizontal regulating sheet and the electric telescopic buckle, a pair of electromagnetic reversing valves for controlling the pair of electric hydraulic rods are connected with the control unit of the Internet of things device, the control unit of the Internet of things device can conveniently control the two pairs of electric hydraulic rods to synchronously act, and then the two hydraulic pressure regulating sheets can be utilized to change the areas of the two water storage grooves, so that the purposes of regulating the water pressure and the water flow can be achieved, the purpose of accurately controlling dust can be achieved, meanwhile, the water consumption of magnetized water can be effectively saved, and further, the electric hydraulic reversing valves can be matched with the dust concentration monitor arranged at the head part of a tunneling machine, so that the distance between the two hydraulic pressure regulating sheets can be controlled according to the dust concentration condition, the adaptive regulation of the fog curtain drop quantity can be achieved, and the accurate dust curtain operation can be more effectively and accurately controlled. Utilize flexible dryer to connect relative dryer go-between and the fog curtain generating device with adjustable set up, simultaneously, utilize a plurality of electronic hydraulic support connection dryer go-between and fog curtain generating device with adjustable in flexible dryer outside, can be convenient for adjust the distance between dryer go-between and the fog curtain generating device with adjustable through electronic hydraulic support, and then reach the purpose of adjusting the displacement of fog curtain generating device with adjustable in the tunneling direction, like this, the emergence position of fog curtain can be controlled to can carry out fixed point dust fall operation in a flexible way. Through being provided with the position appearance sensor that is used for gathering the machine head position appearance signal of dig in the entry driving machine main part, can be convenient for thing networking device control unit obtain the entry driving machine aircraft nose in real time for the relative position of entry driving machine main part, like this, be favorable to thing networking device control unit to control a plurality of electric hydraulic support's flexible volume according to the position of dust source, and then make the fog curtain shower nozzle be located the region of dust source certain within range all the time, reach the purpose of subsidence to accurate tracking of dust, of course, also can control the flexible position of two pairs of electric hydraulic stems according to the position of dust source, and then carry out adaptive regulation to the spraying volume of fog curtain shower nozzle. A plurality of magnetized water pipe through holes I are formed in the ring surface of the air duct connecting ring, a plurality of magnetized water pipe through holes II are formed in a water storage bottom cover on the adjustable fog curtain generating device, a plurality of magnetized water pipe water pipes connected with the magnetized water tank sequentially penetrate through the magnetized water pipe through holes I and then are inserted into the magnetized water pipe through holes II in a one-to-one correspondence mode, the magnetized water tank and the water storage groove can be effectively communicated, and then high-pressure water in the magnetized water tank can be utilized to supply water to the atomizing nozzle. The air pressure fan is hung above the heading machine in an inclined manner, and the dust source tracking type air pressure fog curtain self-moving mechanism above the heading machine is connected with an air pressure port of the air pressure fan through the transition air duct, so that a fog curtain driven by wind power can be generated above the heading machine, and the fog curtain can be sprayed to the outside in a certain range, and therefore the dust fall effect of a heading face can be greatly improved. The pressure deformation detection device, the identification camera device and the signal emitter of the Internet of things are arranged in the deformation identification control mechanism of the Internet of things, and the pressure deformation detection device and the identification camera device are respectively arranged at two ends of the connecting rod body, so that deformation signals of the coal wall can be collected when the pressure deformation detection device is inserted into the wall body of the coal wall, the identification camera device can be used for collecting specific action image data of workers conveniently, and specific action instructions of the workers can be identified through the action image data; the front side and the rear side of the heading machine are respectively provided with the deformation identification control mechanism of the Internet of things, so that the coal wall deformation condition can be conveniently collected and the action instructions of workers can be conveniently identified at the front side and the rear side of the heading machine. Through the setting of thing networking signal transmitter, can be convenient for send the specific action instruction of workman who gathers coal wall deformation signal and discernment to thing networking device control unit, like this, thing networking device control unit can control the switching action of flow control valve according to the specific action instruction of workman, and then reaches the purpose that produces and stop of control fog curtain automatically through the action of workman. In addition, the control unit of the device of the internet of things can judge whether to continue tunneling work according to the deformation condition of the coal wall, and control the heading machine head to stop working when the deformation of the coal wall exceeds a set value, so as to stop tunneling work, and simultaneously, can control two pairs of electric hydraulic rods to synchronously drive two hydraulic adjusting pieces to move a certain distance in a direction away from each other, so as to effectively increase the amount of sprayed liquid drops, and can control piston rods in a plurality of electric hydraulic supports to synchronously extend out for a set distance, so that the spraying range is effectively increased, and the aim of improving the safety coefficient in the working process is fulfilled. Furthermore, the dangerous warning lamp can be controlled to flash and warn light in time when the deformation of the coal wall exceeds a set value, so that the aim of warning in time is achieved.
The system carries out fixed-point fog curtain dust control operation on different dust producing positions of a tunneling machine during tunneling work through the data collected by the plurality of electric hydraulic supports arranged in the dust source tracking type air pressing fog curtain self-moving mechanism and the identified action instructions combined with the deformation identification control mechanism of the Internet of things, and meanwhile, the liquid drop quantity of the generated fog curtain can be conveniently regulated through the adjustable fog curtain generating device, so that the consumption of magnetized water is reduced to the greatest extent, and the aim of saving energy is fulfilled. The system can cover dust source to the greatest extent, carries out high-efficiency treatment on dust from the source in a fixed-point and quantitative mode, can help to reduce the temperature of a working surface, improves the dust treatment effect, and simultaneously improves the environmental protection effect, and has the advantages of low cost, safety, high efficiency, energy conservation, environmental protection and the like.
Claims (5)
1. The wind-fog curtain type dust fall system for the tunneling working face comprises a tunneling machine (4) and a conveying belt (7), and is characterized by further comprising an Internet of things deformation identification control mechanism (3), a wind-pressing fan (2), a dust source tracking type wind-pressing fog curtain self-moving mechanism (5), a magnetizing water tank (8), a dust concentration monitor and a pose sensor;
The conveying belt (7) is arranged at the lower side of the coal dropping port of the heading machine (4);
the heading machine (4) comprises a heading machine main body (45), a hazard warning lamp (41) and an Internet of things device control unit (42); the hazard warning lamp (41) is arranged at the top of the heading machine main body (45); the control unit (42) of the Internet of things device is arranged on one side of the tunneling machine main body (45) and is respectively connected with the tunneling machine main body (45) and the hazard warning lamp (41);
the number of the deformation identification control mechanisms (3) of the Internet of things is two, the two deformation identification control mechanisms are respectively arranged on the front side and the rear side of the heading machine (4), the deformation identification control mechanisms (3) of the Internet of things are composed of a connecting rod body (34), a pressure deformation detection device (32), an identification camera device (31) and an Internet of things signal transmitter (33), the pressure deformation detection device (32) is fixedly arranged at one end of the connecting rod body (34) and is inserted into a wall body (9) of one side coal wall, and the deformation identification control mechanisms are used for collecting deformation signals of the coal wall and sending the collected deformation signals to an Internet of things device control unit (42) in real time through the Internet of things signal transmitter (33); the identification camera device (31) is fixedly arranged at the other end of the connecting rod body (34) and is used for collecting specific action image data of workers, identifying specific action instructions of the workers through the action image data and sending the identified action instructions to the control unit (42) of the Internet of things device through the signal transmitter (33) of the Internet of things; the internet of things signal transmitter (33) is arranged at the top of the identification camera device (31) and connected with the internet of things device control unit (42) and is used for transmitting data output by the internet of things device control unit (42) to the outside;
The air pressure fan (2) is arranged at the rear side above the heading machine (4), and a transition air duct (21) extending along the heading direction is connected to the air pressure port of the air pressure fan;
the dust source tracking type compressed air fog curtain self-moving mechanism (5) is arranged above the front end of the heading machine (4) and consists of an air duct connecting ring (51), an adjustable fog curtain generating device (52), a telescopic air duct (54) and an electric hydraulic support (53); the air duct connecting ring (51) is of a circular ring structure, is fixedly connected with the front end part of the transition air duct (21), is communicated with a compressed air port of the compressed air fan (2) through the transition air duct (21), and is provided with a plurality of magnetized water pipe through holes I (511) along the circumferential direction on the annular surface of the air duct connecting ring (51); the adjustable fog curtain generating device (52) is coaxially arranged on the front side of the air duct connecting ring (51), and consists of a water storage bottom cover (521), a sealing gasket (522), a fog curtain top cover (525), an atomization nozzle (526), a water pressure adjusting piece (523), an electric telescopic buckle (524) and an electric hydraulic rod (527), wherein the water storage bottom cover (521) is of a circular ring structure, two semi-annular water storage grooves (5212) are symmetrically formed in the middle of the circular ring surface at the front part of the water storage bottom cover, and the ends of the two water storage grooves (5212) are separated by two strip-shaped separation parts (5214); the water storage bottom cover (521) is provided with a plurality of magnetized water pipe through holes II (5211) at the part where each water storage groove (5212) is positioned; the sealing gasket (522) consists of an annular sealing ring (5221) positioned in a central area, two arc-shaped sealing strips (5222) symmetrically arranged outside the annular sealing ring (5221), and two sealing connecting strips (5223) respectively connecting opposite ends of the annular sealing ring (5221) and the centers of the two arc-shaped sealing strips (5222); the size of the annular sealing ring (5221) is matched with the size of the water storage bottom cover (521) at the inner side parts of the two water storage grooves (5212); the size of the two arc-shaped sealing strips (5222) is matched with the size of the water storage bottom cover (521) at the outer side parts of the two water storage grooves (5212), and sliding grooves (529) are formed in the two end parts of each arc-shaped sealing strip (5222); the size of the two sealing connecting strips (5223) is matched with the size of the two strip-shaped blocking parts (5214); the back side of the sealing gasket (522) is connected to the front side of the water storage bottom cover (521) in a bonding mode, the back side of the annular sealing ring (5221) is bonded to the inner side parts of the water storage bottom cover (521) in the two water storage grooves (5212), the two sealing connecting strips (5223) are correspondingly bonded to the two strip-shaped blocking parts (5214), and the two arc-shaped sealing strips (5222) are bonded to the outer side parts of the water storage bottom cover (521) in the two water storage grooves (5212); a plurality of atomizer mounting holes are uniformly formed in the middle of the annular surface of the fog curtain top cover (525) along the circumferential direction, the atomizer mounting holes correspond to the positions of the two water storage grooves (5212), and the atomizer (526) are respectively arranged in the atomizer mounting holes in a one-to-one correspondence manner; the rear side surface of the fog curtain top cover (525) is connected to the front side surface of the sealing gasket (522) in a fitting way, the annular sealing ring (5221) seals the inner edge of the space between the water storage bottom cover (521) and the fog curtain top cover (525) in an annular way, the two arc-shaped sealing strips (5222) seal the outer edges of the opposite ends of the space between the water storage bottom cover (521) and the fog curtain top cover (525) in an arc-shaped way, and two sliding mounting grooves extending into the inner space of the water storage bottom cover (521) and the fog curtain top cover (525) are formed in the area between the corresponding two ends of the two arc-shaped sealing strips (5222); the two water pressure regulating pieces (523) are of arc-shaped structures, the two water pressure regulating pieces (523) are oppositely arranged in two sliding mounting grooves between the water storage bottom cover (521) and the fog screen top cover (525); the front side and the rear side of each water pressure regulating piece (523) are simultaneously matched with the rear side of the fog curtain top cover (525) and the front side of the water storage bottom cover (521) in a sliding sealing manner, the two end parts of each water pressure regulating piece (523) are respectively provided with sliding convex teeth (528) matched with the sliding grooves (529), meanwhile, the two sliding convex teeth (528) at the two end parts of each water pressure regulating piece (523) are inserted into the two sliding grooves (529) at the end parts at the same side of the two arc sealing strips (5222) in a sliding sealing manner, and the sliding convex teeth (528) are matched with the sliding grooves (529) in a sliding sealing manner; the sections of the two electric telescopic buckles (524) are of U-shaped structures, arc structures which are concave inwards are arranged at the opening ends along the length direction, the two electric telescopic buckles (524) are arranged on the outer sides of the two water pressure regulating pieces (523) opposite to each other, and two ends of the U-shaped opening of each electric telescopic buckle (524) are fixedly connected with the water storage bottom cover (521) and the fog curtain top cover (525) respectively and are used for tightly pressing and connecting the water storage bottom cover (521), the sealing gasket (522) and the fog curtain top cover (525) into an integrated structure; two pairs of electric hydraulic rods (527) are oppositely arranged in two spaces between two water pressure regulating pieces (523) and two electric telescopic buckles (524), one end of each pair of electric hydraulic rods (527) extends into a U-shaped groove of the corresponding electric telescopic buckle (524) and is fixedly connected with the electric telescopic buckle (524), and the other end of each pair of electric hydraulic rods (527) is fixedly connected with the outer edge surface of the bow peak of the corresponding water pressure regulating piece (523); the telescopic air duct (54) is coaxially arranged in a space between the air duct connecting ring (51) and the adjustable fog curtain generating device (52), and two ends of the telescopic air duct are respectively connected with the front side surface of the air duct connecting ring (51) and the rear side surface of the water storage bottom cover (521); a plurality of electro-hydraulic supports (53) are positioned between the air duct connecting ring (51) and the adjustable fog curtain generating device (52), and are uniformly distributed on the outer side of the telescopic air duct (54) in the circumferential direction; the rear ends of the electro-hydraulic brackets (53) are vertically and fixedly connected with the front side surface of the air duct connecting ring (51), and the front ends of the electro-hydraulic brackets are connected with the rear side surface of the water storage bottom cover (521) through a plurality of universal ball heads (55) which are correspondingly arranged; a plurality of first electromagnetic directional valves correspondingly connected with a plurality of electro-hydraulic supports (53), and two pairs of second electromagnetic directional valves correspondingly connected with two pairs of electro-hydraulic rods (527) are connected with an Internet of things device control unit (42);
The water magnetizing tank (8) is arranged on one side of the outside of the tunneling machine main body (45), a water outlet of the water magnetizing tank (8) is fixedly connected with water inlet ends of a plurality of magnetized water delivery pipes (5213), the water inlet ends of the magnetized water delivery pipes (5213) are correspondingly connected with a plurality of flow control valves, and water outlet ends of the magnetized water delivery pipes (5213) penetrate through a plurality of magnetized water pipe through holes I (511) and are correspondingly inserted into a plurality of magnetized water pipe through holes II (5211) one by one and are communicated with the water storage groove (5212); the plurality of flow control valves are connected with the control unit (42) of the Internet of things device;
the position and pose sensor is arranged on the tunneling machine main body (45) and connected with the control unit (42) of the Internet of things device, and is used for collecting the position and pose signals of the tunneling machine head in real time and sending the position and pose signals to the control unit (42) of the Internet of things device;
the dust concentration monitor is connected with the control unit (42) of the Internet of things device, is arranged on the main body (45) of the heading machine and is close to the head of the heading machine, and is used for collecting dust concentration signals of the heading face and sending the dust concentration signals to the control unit (42) of the Internet of things device.
2. The air curtain dust suppression system for a tunneling working surface according to claim 1, wherein the aperture of the atomizing nozzle (526) is 1-5 mm.
3. A heading face air curtain dust fall system as claimed in claim 2, wherein the heading machine (4) further comprises an on-board magnetized water storage tank (44) and a curtain spray head (43), the on-board magnetized water storage tank (44) being mounted at a position behind the top of the heading machine main body (45); the fog curtain spray head (43) is arranged at the rear end of the top of the tunneling machine main body (45), and the water inlet end of the fog curtain spray head is connected with the water outlet end of a water supply pump arranged in the airborne magnetized water storage tank (44) through a water conveying pipeline; the water supply pump is connected with the control unit (42) of the Internet of things device.
4. A heading face air curtain dust fall system as claimed in claim 3, further comprising a wet dust collector (1), the wet dust collector (1) being located on the rear side of the heading machine (4) and on the upper side of the conveyor belt (7), the dust inlet of which is located close to the side of the heading machine (4).
5. The air curtain type dust fall system for the tunneling working face according to claim 4, wherein the air blower (2) is arranged on the rear side above the tunneling machine (4) through a single track, and the air duct connecting ring (51) in the dust source tracking type air curtain type dust fall mechanism (5) is arranged above the tunneling machine (4) through the single track.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311128443.4A CN117072163B (en) | 2023-09-04 | 2023-09-04 | Air curtain type dust fall system for tunneling working face |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311128443.4A CN117072163B (en) | 2023-09-04 | 2023-09-04 | Air curtain type dust fall system for tunneling working face |
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| CN117072163A CN117072163A (en) | 2023-11-17 |
| CN117072163B true CN117072163B (en) | 2024-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311128443.4A Active CN117072163B (en) | 2023-09-04 | 2023-09-04 | Air curtain type dust fall system for tunneling working face |
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| CN115680749A (en) * | 2022-11-14 | 2023-02-03 | 中煤华晋集团有限公司 | Dust removal device and method for dust removal fan linkage dust fall water curtain type dust removal device of driving face |
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2023
- 2023-09-04 CN CN202311128443.4A patent/CN117072163B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0813999A (en) * | 1994-06-28 | 1996-01-16 | Maeda Corp | Safety facility against dust for tunnel work |
| CN102296955A (en) * | 2011-05-27 | 2011-12-28 | 山东科技大学 | Dedusting method with closed excavating working face and system thereof |
| CN109653746A (en) * | 2018-12-26 | 2019-04-19 | 辽宁工程技术大学 | A kind of multilayer veil dust control device applied in driving face |
| CN112343645A (en) * | 2020-08-04 | 2021-02-09 | 煤科集团沈阳研究院有限公司 | Dust falling device and method for driving working face |
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| CN117072163A (en) | 2023-11-17 |
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