CN115263296A - Efficient and safe dust removal system for mine and operation method - Google Patents
Efficient and safe dust removal system for mine and operation method Download PDFInfo
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- CN115263296A CN115263296A CN202210889772.XA CN202210889772A CN115263296A CN 115263296 A CN115263296 A CN 115263296A CN 202210889772 A CN202210889772 A CN 202210889772A CN 115263296 A CN115263296 A CN 115263296A
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- 238000000034 method Methods 0.000 title claims abstract description 34
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- 238000009826 distribution Methods 0.000 claims abstract description 72
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 64
- 238000000926 separation method Methods 0.000 claims abstract description 60
- 239000003595 mist Substances 0.000 claims abstract description 25
- 230000001502 supplementing effect Effects 0.000 claims abstract description 23
- 239000013589 supplement Substances 0.000 claims abstract description 19
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 239000010865 sewage Substances 0.000 claims description 49
- 230000008569 process Effects 0.000 claims description 18
- 230000001105 regulatory effect Effects 0.000 claims description 16
- 239000007921 spray Substances 0.000 claims description 14
- 238000000605 extraction Methods 0.000 claims description 11
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- 239000000779 smoke Substances 0.000 claims description 8
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- 239000002245 particle Substances 0.000 claims description 5
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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
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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
- E21C35/223—Equipment associated with mining machines for sucking dust-laden air from the cutting area, with or without cleaning of the air
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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
- E21C35/226—Control valves for the spraying liquid used in dust suppression systems
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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
- E21C35/24—Remote control specially adapted for machines for slitting or completely freeing the mineral
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- 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
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
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- 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
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/006—Ventilation at the working face of galleries or tunnels
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- 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
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/08—Ventilation arrangements in connection with air ducts, e.g. arrangements for mounting ventilators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
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Abstract
The invention relates to the technical field of tunnel construction, in particular to a mining efficient and safe dust removal system and an operation method. The system comprises an underground tunneling and mining device, an integrated dust removal device, a mine air supplementing device and a control system, wherein the underground tunneling and mining device is provided with a tunneling and mining head, the integrated dust removal device comprises a dust collection air inlet head, an air entraining suction section, a water mist dust removal mixing section, a cyclone separation section, a separation pollution discharge section and a tail end exhaust pipe, and the mine air supplementing device is provided with an air distribution head and an air adjusting plate, wherein the air distribution head can adjust the air flow outlet direction. The operation method of the dust removal system comprises the following steps: s1: starting the mine air supplementing device; s2: starting the integrated dust removal device; s3: starting the underground tunneling exploitation device; s4: the control system controls the adjustment. The dust removal system has the characteristics of high dust removal efficiency, convenience in inspection and maintenance, safety, environmental friendliness and the like, and the operation method of the dust removal system can realize the associated control of tunneling, air supplement and dust removal and air exhaust and realize efficient and safe dust removal.
Description
Technical Field
The invention relates to the technical field of tunnel construction, in particular to a high-efficiency and safe mining dust removal system using compressed air as power and an operation method.
Background
In the working processes of mine excavation, tunnel construction, ore dressing, coal dressing and the like, a large amount of solid dust exists, the dust is not well treated, serious environmental pollution and potential safety hazards are generated, and particularly, in the coal mining process, the problems of large amount of coal dust, light dust specific gravity, easiness in floating in the air and serious potential safety hazards and pollution are caused. Along with economic development, the demand of industrial production on coal energy is increased, mechanized mining and production intensity are continuously improved, so that the concentration of dust on a tunneling surface is seriously exceeded, although some coal mines treat the dust at present, most underground coal mines have the excessive concentration of the dust, coal mine dust pollution and safety problems become serious day by day, high-concentration dust can cause coal mine explosion accidents to cause economic loss and casualties, meanwhile, small-diameter dust particles in the dust easily reach the deep part of respiratory organs of coal mine workers to increase the risk of suffering from pneumoconiosis, particularly in recent years, the coal yield is rapidly developed, the mechanization level is greatly improved, and the underground coal mines can generate a large amount of dust in the links of tunneling, coal mining, transportation and the like, so that the safety production of the mines and the health of the coal mine workers are seriously threatened.
The existing coal mine dust removal methods are mainly divided into two types: one type is a dry dust removal device, which comprises a bag type dust collector, a settling chamber, a dust catching device, a dust removal fan and the like, wherein the negative pressure dust removal fan drives the bag type dust collector to generate negative pressure suction dust-containing airflow; the other type is a wet dust removal device which comprises a wet dust removal fan, a water supply device, a slag discharge device and the like, has obvious advantages in dust prevention and explosion prevention, can remove fine dust, and has the defects of large volume, difficult arrangement, poor slag discharge and difficult control of water consumption.
The two types of dust removing equipment generally relate to the safety and explosion prevention problems of a dust removing fan and a plurality of electric equipment, and in the dust treatment process of coal mining and the like, because dust has explosiveness, larger potential safety hazards exist; meanwhile, the equipment has the problems of complex process operation, complex inspection and maintenance, huge processing facilities, low processing efficiency and the like in the using process.
The invention provides a coal mine dust removal system and a coal mine dust removal method in an invention patent CN202010396438.1 by the applicant, which comprises a trapping device, a pneumatic suction device, a mist dust removal device, a cyclone separation device, a multi-phase flow splitting device and a dust exhauster, wherein the trapping device, the pneumatic suction device, the mist dust removal device, the cyclone separation device and the multi-phase flow splitting device are all in a tubular structure, two adjacent devices are connected into a whole through a flange, the pneumatic suction device is connected with a coal mine ventilation pipe through a telescopic hose, a slag discharge port of the multi-phase flow splitting device is connected with a coal mine slag discharge system through a telescopic pipeline, the mist dust removal device is connected with a coal mine water supply system through a hose, and stop valves are arranged on the telescopic hose and the hose pipeline. The coal mine dust removal system unit combination of this patent reasonable in design, small in size has advantages such as the small investment, take up an area of for a short time, power consumption is low, the dust rate of taking off is high, but it does not set up the air supplement device, and system architecture is not perfect yet.
The Chinese patent with the application number of CN201822120931.1 provides a ventilation and dust removal system for tunnel construction, which comprises an air supply device arranged on one side of a tunnel and a dust removal device arranged on the other side of the tunnel; the air supply device comprises an axial flow fan arranged at the entrance of the tunnel, an air supply cylinder arranged in the tunnel and one end of the air supply cylinder is connected with the axial flow fan, and a diffusion air cylinder one end of which is connected with the other end of the air supply cylinder, wherein the diffusion air cylinder is positioned behind a cantilever tunneling machine working on the tunnel face in the tunnel; the dispersing air duct is provided with a plurality of dispersing holes, so that the fed fresh air is dispersed behind the cantilever tunneling machine to form an air wall; the dust removal device comprises a fan arranged in the tunnel, a wet dust collector connected with the fan and a dust collection air cylinder with one end connected with the wet dust collector, and the other end of the dust collection air cylinder is positioned at the same level of the cantilever tunneling machine working on the tunnel face in the tunnel; so that dust generated during tunneling can be sucked into the wet dust collector for treatment. The patent can show the tunnel construction environment of improving, is favorable to constructor's healthy, improves the efficiency of construction, but its air supply arrangement can not adjust the air current direction according to on-the-spot digging face space shape to and digging speed and intensity, and its air supplement effect is ideal inadequately.
Disclosure of Invention
The invention aims to solve the technical problems of complex process operation, complex inspection and maintenance, low processing efficiency, imperfect existing dust removal system and unsatisfactory system air supplement effect of the existing coal mine dust removal equipment, and provides a mining high-efficiency safe dust removal system and an operation method.
The technical scheme adopted by the invention for realizing the purpose is as follows: a high-efficiency safe dust removal system for mines comprises an underground tunneling and mining device, an integrated dust removal device, a mine air supplement device and a control system,
the underground tunneling and mining device is connected with the integrated dust removal device and is provided with a tunneling and mining head;
the integrated dust removal device comprises a dust collection air inlet head, an air entraining suction section, a water mist dust removal mixing section, a cyclone separation section, a separation blowdown section and a tail end exhaust pipe which are sequentially connected, wherein the dust collection air inlet head is positioned behind the tunneling mining head and consists of a net-shaped shell;
the mine air supplementing device is positioned above the integrated dust removal device and comprises an air distribution box, one end of the air distribution box is connected with a compressed air inlet pipeline, an air inlet adjusting valve and an air inlet flow sensor are arranged on the compressed air inlet pipeline, an adjusting air plate is arranged at the other end of the air distribution box and is positioned at one end of a tunneling working face, a cover plate is arranged at the upper end of the air distribution box, adjustable air distribution heads are arranged on the air distribution box and the cover plate through sealing rings and are distributed at intervals, an up-and-down through duct is formed in each adjustable air distribution head, the lower end of each duct is an air inlet, the upper end of each duct is an air outlet, the air inlet is positioned inside the air distribution box, the air outlet is positioned outside the air distribution box, an adjusting control unit is further arranged on the air distribution box, and the adjusting control unit is electrically connected with the air inlet adjusting valve, the air inlet flow sensor and the adjusting air plate;
and the control system is respectively and electrically connected with the underground tunneling and mining device, the integrated dust removal device and the adjusting and controlling unit of the mine air supplementing device.
Further, the adjustable air distribution head is of a spherical structure.
Further, bleed suction section includes bleed suction shell, installs a plurality of venturi spray tubes on the bleed suction shell, and the nozzle of venturi spray tube is deepened inside the casing and towards the rear to become certain inclination with bleed suction shell axis, a plurality of venturi spray tubes are linked together through air intake distributor box and compressed air intake pipe, air inlet regulating valve, inlet flow sensor and the pressure sensor that admits air have set gradually in the compressed air intake pipe, air inlet regulating valve, inlet flow sensor and pressure sensor that admits air are connected with the control system electricity respectively.
Further, water smoke dust removal mixed section includes water smoke dust removal shell, and directional atomizing nozzle is installed to the hoop on the water smoke dust removal shell, installs atomizing nozzle in the water smoke dust removal shell, directional atomizing nozzle and atomizing nozzle all are linked together with the atomized water pipeline, atomized water is provided with atomized water regulating valve, flow sensor and pressure sensor on the atomized water pipeline, atomized water regulating valve, flow sensor and pressure sensor are connected with the control system electricity respectively.
Furthermore, the cyclone separation section comprises a cyclone separation shell, the cyclone separation shell is of a conical structure, the small end of the cyclone separation shell is connected with the water mist dust removal mixing section, the large end of the cyclone separation shell is connected with the separation sewage discharge section, a flow distribution cone and a cyclone cone are arranged on the central axis of the cyclone separation shell, the head of the flow distribution cone and the head of the cyclone cone are of cone or streamline body flow distribution structures, the middle of the flow distribution cone and the cyclone cone are of spiral body structures, and the tail of the flow distribution cone and the tail of the cyclone cone are of streamline body or sphere structures.
Further, separation blowdown section is including separation blowdown shell, separation blowdown shell is the toper structure, and separation blowdown shell stub end is connected with the cyclone separation section, and separation blowdown shell stub end is connected with terminal blast pipe, be provided with concentric water conservancy diversion toper separating drum in the separation blowdown shell, the ascending equipartition of separating drum axial has a plurality of slots, and the inside baffling piece that is provided with axial direction parallel or becomes certain angle of separating drum, the baffling piece is located between two adjacent rows of slots, and separation blowdown shell bottom both sides are provided with the dirt collecting tank, the dirt collecting tank links to each other with sewage pipes, is provided with the dredge pump on the sewage pipes, the dredge pump is pneumatic or hydraulic dredge pump.
Further, terminal blast pipe includes terminal blast pipe shell, terminal blast pipe shell is the toper structure, and terminal blast pipe shell stub end is connected with separation blowdown section, and terminal blast pipe shell stub end is connected with the gas purification blast pipe, be provided with the air discharge valve on the gas purification blast pipe.
Furthermore, the underground tunneling and mining device is provided with a tunneling arm, the front end of the tunneling arm is provided with a tunneling and mining head, a tunneling and mining control unit is arranged in the tunneling arm and is electrically connected with a control system, and the lower part of the underground tunneling and mining device is also provided with a traveling crawler belt.
An operation method of a mining efficient and safe dust removal system comprises the following steps:
s1: starting the mine air supplementing device: fresh air is supplemented, part of air in the air distribution box is blown out from an air adjusting plate at the front end of the box body, the other part of air is blown out from an air outlet of the air distribution head, and the directions of the air outlet of the air adjusting plate and the air outlet of the air distribution head are adjusted according to the space shape of a field mining surface;
s2: starting the integrated dust removal device: setting corresponding air extraction amount and atomization dust removal water supplement amount, and opening a compressed air inlet adjusting valve, an atomization water adjusting valve and a sewage pump compressed air valve to enable related gas flow and dust amount to be matched with fresh air supplement amount;
s3: starting the underground tunneling exploitation device: the tunneling mining head starts to work, the tunneling speed and the tunneling strength are controlled through the tunneling mining control unit, and dust generated in the tunneling mining process enters the integrated dust removal device;
s4: the control system controls and adjusts: according to the excavating speed and the strength, the matched air supplementing flow is set through the adjusting air plate, the air inlet adjusting valve and the air inlet flow sensor, so that stable air supplementing, sucking and exhausting balance is formed between the mine air supplementing device and the integrated dust removal device, and the tunneling exploitation, air supplementing, dust removal, air extraction and pollution discharge are matched.
Further, in the step S3, dust generated in the tunneling mining process enters the integrated dust removing device, high-speed rotational flow airflow carrying water mist and dust particles from the front section of the dust removing device collides with the baffle plate on the conical separation cylinder for interception, a mixture of water droplets and dust is separated from air under the action of centrifugal force, the mixture passes through the narrow grooves, and is collected to the dirt collection tank under the action of gravity and discharged through the sewage discharge pump after colliding with the shell, and the separated clean gas is discharged through the tail end exhaust pipe.
Compared with the prior art, the invention has the following beneficial effects:
(1) The integrated dust removal device of the efficient and safe dust removal system for the mine can improve the dust removal separation effect and reliability of equipment by means of multi-pipe Venturi air entraining, cyclone water mist capturing and reinforced centrifugal separation component dust removal, the mine air supplement device is provided with an adjustable air supplement structure, the air outlet directions of the air adjusting plate and the air distribution head can be adjusted according to the mining speed and the mining strength, accordingly, dust can be better prevented from entering a rear roadway and entering the dust removal device, the air distribution head is of a spherical structure, the adjustment is more flexible and convenient, the air supplement gas flow is controlled through the air adjusting plate, the air inlet adjusting valve and the flow sensor, the matching of air supplement and dust removal air extraction is better realized, and the integrated device has the characteristics of high dust removal efficiency, small size, convenience in inspection and maintenance, safety, environmental friendliness and the like.
(2) The air-entraining suction section of the mining efficient and safe dust removal system adopts a multi-tube type Venturi nozzle structure, can meet the treatment requirement of a large amount of dust in the coal mining process, and realizes the high-vacuum and large-air-volume suction effect of a large-caliber dust removal device.
(3) The water mist dust removal mixing section of the high-efficiency safe dust removal system for the mine realizes the multidimensional uniform dispersion effect of liquid in equipment with large air volume and large caliber by the high-turbulence mixing of mixed exhaust of the internal and external combined atomizing nozzle and the front-end Venturi nozzle, and improves the dust capture and removal efficiency.
(4) The flow dividing and cyclone cone head part of the cyclone separating section of the high-efficiency safe dust removal system for the mine is of a cone or streamline body flow dividing structure, the middle part of the cyclone separating section is of a spiral body structure, and the tail part of the cyclone separating section is of a streamline body or sphere structure.
(5) The operation method of the mining high-efficiency safe dust removal system can perform related positioning control on the air supply direction, the position of the air distribution box, the position of the tunneling mining head and the position of the dust removal device collecting air inlet head through the control system, achieves the best dust removal effect in the mining process, can perform related operation control on the tunneling mining speed, the dust removal air extraction flow, the dust removal water spray mist quantity, the fresh air supply quantity and the sewage discharge quantity, achieves matching in the operation process, can also independently and flexibly control related flow, and achieves matching control of related quantity through manual setting operation, so that high-efficiency safe dust removal is achieved, and the mining high-efficiency safe dust removal system can be widely applied to various mining and mineral separation production processes, and is particularly suitable for the mining and processing processes of coal mines with high requirements on safety and environmental protection.
Drawings
FIG. 1 is a structural diagram of the mining high-efficiency safe dust removal system.
FIG. 2 is a top view of the high-efficiency safe dust-removing system for mining of the invention.
Fig. 3 is a structural diagram of an air supplementing device of the mining efficient and safe dust removal system.
In the figure: 1. the device comprises a tunneling exploitation head, 2 a tunneling exploitation control unit, 3 a dust collection air inlet head, 4 an air-bleed suction shell, 5 an air inlet distribution box, 6 a Venturi nozzle, 7 an air inlet regulating valve, 8 an air inlet flow sensor, 9 an air inlet pressure sensor, 10 a compressed air inlet pipe, 11 a water mist dust removal shell, 12 a directional atomizing nozzle, 13 an atomizing nozzle, 14 an atomized water regulating valve, 15 a flow sensor, 16 a pressure sensor, 17 an atomized water pipeline, 18 a cyclone separation shell, 19 a flow distribution and cyclone cone tail, 20 a flow distribution and cyclone cone head, 21 a flow distribution and cyclone cone, 22 a flow distribution and cyclone cone middle part, 23, a first sewage pump, 24, a first sewage discharge pipeline, 25, a first sewage collection tank, 26, a separation sewage discharge shell, 27, a separation cylinder, 28, a groove, 29, a baffling sheet, 30, a second sewage collection tank, 31, a second sewage discharge pipeline, 32, a second sewage discharge pump, 33, a tail end exhaust pipe shell, 34, an exhaust valve, 35, a purified gas exhaust pipe, 36, an air distribution box, 37, an air inlet, 38, a cover plate, 39, a sealing ring, 40, an air outlet, 41, a ball body, 42, an adjustable air distribution head, 43, a bolt, 44, an adjustable air plate, 45, an air inlet adjusting valve, 46, a flow sensor and 47, a compressed air inlet pipeline.
Detailed Description
The present invention will be described in detail below with reference to the drawings and examples, but the present invention is not limited to the specific examples.
The mining efficient and safe dust removal system shown in fig. 1 comprises an underground tunneling and mining device MIM, an integrated dust removal device DRE, a mine air supplement device ADI and a control system CS.
The lower part of the underground tunneling and mining device MIM is provided with a travelling crawler, the front end of the underground tunneling and mining device MIM is provided with a tunneling arm, the front end of the tunneling arm is provided with a tunneling and mining head 1, a tunneling and mining control unit 2 is arranged in the tunneling arm, the tunneling and mining control unit 2 is electrically connected with a control system CS, the tunneling and mining control unit 2 can control the driving and tunneling speed and strength, and the matching of tunneling, air supplementing, dust removing and air extracting is realized.
The rear end of the underground tunneling and mining device MIM is connected with an integrated dust removal device DRE, the integrated dust removal device DRE comprises a dust collection air inlet head A, an air entraining suction section B, a water mist dust removal mixing section C, a cyclone separation section D, a separation pollution discharge section E and a tail end exhaust pipe F which are sequentially connected, a dust collection air inlet head A3 is positioned behind the tunneling and mining head 1, and the dust collection air inlet head A3 is of a spherical, square or ellipsoidal porous reticular component shell structure.
The air-entraining suction section B comprises an air-entraining suction shell 4, the air-entraining suction shell 4 is a cylinder shell with a circular, square or polygonal cross section, a plurality of Venturi spray pipes 6 are arranged in the air-entraining suction shell 4, nozzles of the Venturi spray pipes 6 extend into the shell and face the rear direction, and form a certain inclination angle with the central axis of the air-entraining suction shell, the Venturi spray pipes 6 are communicated with a compressed air inlet pipe 10 through air-inlet distribution boxes 5, and generate a certain negative pressure through spraying of the spray pipes, so that dust is sucked into the air-entraining suction shell 4, the air-inlet distribution boxes 5 are of an annular structure, the annular structure is sleeved on the air-entraining suction shell 4 and is integrated with the air-entraining suction shell 4, the inner cavity wall of the air-inlet distribution boxes 5 is communicated with corresponding openings of the Venturi spray pipes 6, the outer cavity wall is connected with the compressed air inlet pipe 10, an air inlet regulating valve 7, an inlet flow sensor 8 and an inlet pressure sensor 9 are sequentially arranged on the compressed air inlet pipe 10, the air inlet flow sensor 8 and the inlet pressure sensor 9 are respectively and electrically connected with a control system CS, the structure, the air-inlet flow regulating valve 7, the air-inlet flow sensor 8 and the inlet pressure sensor 9 are respectively electrically connected with the suction section, the structure, the air-entraining suction pipe type dust-collecting device can realize the uniform distribution of compressed air, and the suction pipe type coal mining process, and the high-entraining suction pipe type dust collecting device can realize the high-collecting effect, and the high-collecting effect of the coal mining process.
The water mist dust removal mixing section C comprises a water mist dust removal shell 11, the water mist dust removal shell 11 is a cylindrical shell with a circular, square or polygonal cross section, a directional atomizing nozzle 12 is annularly arranged on the water mist dust removal shell 11, the directional atomizing nozzle 12 is a directional nozzle structure with a certain diffusion angle, an atomizing nozzle 13 is arranged at the position of a central axis inside the water mist dust removal shell 11, the atomizing nozzle 13 is a spherical or similar spherical 360-degree dead-angle-free spray head structure, the directional atomizing nozzle 12 and the atomizing nozzle 13 can be in a pure liquid atomizing form or a gas-liquid atomizing form, the directional atomizing nozzle 12 and the atomizing nozzle 13 are both communicated with an atomizing water pipeline 17, an atomizing water regulating valve 14, a flow sensor 15 and a pressure sensor 16 are arranged on the atomizing water pipeline 17, the atomizing water regulating valve 14, the flow sensor 15 and the pressure sensor 16 are respectively and electrically connected with a control system CS, and the internal and external combined atomizing nozzle is adopted to be mixed with high turbulence of mixed exhaust of a front-end Venturi nozzle, so that the multi-dimensional uniform dispersion effect of liquid in large-volume and large-caliber equipment is realized, and the dust removal efficiency is improved.
The cyclone separation section D comprises a cyclone separation shell 18, the cyclone separation shell 18 is a conical shell with a circular, square or polygonal cross section, the small end of the cyclone separation shell 18 is connected with the water mist dust removal mixing section C, the large end of the cyclone separation shell 18 is connected with the separation blowdown section E, a shunting and cyclone cone 21 is arranged on an axis of the cyclone separation shell 18, the head 20 of the shunting and cyclone cone is of a cone or streamline body shunting structure, the middle 22 of the shunting and cyclone cone is of a spiral body structure, and the tail 19 of the shunting and cyclone cone is of a streamline body or sphere structure.
The separating and sewage discharging section E comprises a separating and sewage discharging shell 26, the separating and sewage discharging shell 26 is a conical cylindrical shell with a circular, square or polygonal cross section, the small end of the separating and sewage discharging shell 26 is connected with the cyclone separating section D, the large end of the separating and sewage discharging shell 26 is connected with the tail end exhaust pipe F, a concentric flow guide conical separating cylinder 27 is arranged in the separating and sewage discharging shell 26, a plurality of grooves 28 are uniformly distributed in the axial direction of the separating cylinder 27, baffle plates 29 which are axially parallel or have a certain angle are arranged in the separating cylinder 27, the baffle plates 29 are arranged between two adjacent rows of grooves 28, V-shaped double-low-point sewage collecting grooves are arranged on two sides of the bottom of the separating and sewage discharging shell 26, each sewage collecting groove comprises a first sewage collecting groove 25 and a second sewage collecting groove 30, the first sewage collecting groove 25 is connected with a first sewage discharging pipeline 24, a first sewage discharging pump 23 is arranged on the first sewage discharging pipeline 24, the second sewage collecting groove 30 is connected with a second sewage discharging pipeline 31, a second sewage discharging pipeline 31 is arranged on the second sewage discharging pipeline 31, the first sewage discharging pump 23 and the second sewage discharging pump 32 are pneumatic or hydraulic sewage pumps, the first sewage discharging pump 23 and the second sewage discharging pump 32 are pneumatic or hydraulic sewage discharging pump, the compressed air or hydraulic control is used for controlling, so that the safety of the electric control is reduced, and the number of the sewage discharging equipment is increased.
The tail end exhaust pipe F comprises a tail end exhaust pipe shell 33, the tail end exhaust pipe shell 33 is a cylinder body and a conical cylinder body with a circular, square or polygonal cross section, the small end of the tail end exhaust pipe shell 33 extends into the separating cylinder 27, meanwhile, the tail end exhaust pipe shell 33 is fixedly connected with the separating sewage discharging shell 26 in a sealing mode, the large end of the tail end exhaust pipe shell 33 is connected with a purified gas exhaust pipe 35, an exhaust valve 34 is arranged on the purified gas exhaust pipe 35, high-speed rotary flowing air flow carrying water mist and dust particles from the front section collides with a baffling sheet 29 on the conical separating cylinder 27 for intercepting, a water droplet and dust mixture is separated from air under the action of centrifugal force and passes through a plurality of narrow grooves 28, the water droplet and dust mixture is collected into V-shaped double-low-point sewage collecting grooves under the action of gravity after colliding with the shell, and finally, the separated clean gas is discharged through the tail end exhaust pipe F and enters a purified gas exhaust pipe 35.
The mine air supplement device ADI is positioned above the integrated dust removal device DRE, the mine air supplement device ADI comprises an air distribution box 36, one end of the air distribution box 36 is connected with a compressed air inlet pipeline 47, an air inlet adjusting valve 45 and an air inlet flow sensor 46 are arranged on the compressed air inlet pipeline 47, an air adjusting plate 44 is arranged at the other end of the air distribution box 36, the air adjusting plate 44 is positioned at one end of a tunneling working face, the air adjusting plate 44 is in a shutter structure, a cover plate 38 is arranged at the upper end of the air distribution box 36, an adjustable air distribution head 42 is arranged on the air distribution box 36 and the cover plate 38 through a sealing ring 39, the sealing ring 39 has a lubricating function, the adjustable air distribution heads 42 are distributed at intervals, and the adjustable air distribution head 42 is a ball 41 with a hole in the middle, the lower end of the opening is an air inlet 37, the upper end of the opening is an air outlet 40, the air inlet 37 is positioned inside the air distribution box 36, the air outlet 40 is positioned outside the air distribution box 36, the air distribution head 42 adopts a spherical structure, so that the adjustment is more flexible and convenient, the air distribution box 36 is also provided with an adjustment control unit, the adjustment control unit is respectively electrically connected with an air inlet adjusting valve 45, an air inlet flow sensor 46, an air adjusting plate 44 and a control system CS, the air supply equipment with the adjustable structure can control the outlet flow direction of compressed air by adjusting the air outlet direction of the air distribution head, and the air supply gas flow is controlled by the front end air adjusting plate 44, the air inlet adjusting valve 45 and the air inlet flow sensor 46, so that the matching of air supply and dust removal air extraction is realized.
The invention relates to a mining efficient and safe dust removal system which performs device operation through a CS operation interface of a control system, wherein the operation method comprises the following steps:
s1: starting a mine air supplement device ADI: fresh air is supplemented, part of air in the air distribution box 36 is blown out from an adjusting air plate 44 at the front end of the box body, the other part of air is blown out from an air outlet 40 of the air distribution head, and the air outlet directions of the adjusting air plate 44 and the air distribution head 42 are adjusted according to the space shape of a field mining surface;
s2: starting the integrated dust removal device DRE: setting corresponding air extraction quantity and atomization dust removal water supply quantity, and opening a compressed air inlet regulating valve 7, an atomization water regulating valve 14 and a sewage pump compressed air valve to enable related gas flow and dust quantity to be matched with fresh air supply quantity;
s3: starting an underground tunneling mining device MIM: the tunneling mining head 1 starts working, the tunneling speed and the tunneling strength are controlled by the tunneling mining control unit 2, dust generated in the tunneling mining process enters the integrated dust removal device DRE, high-speed rotating flow air flow carrying water mist and dust particles from the front section collides with the baffling sheet 29 on the conical separation cylinder 27 for interception, a water droplet and dust mixture is separated from air under the action of centrifugal force, the water droplet and dust mixture passes through the plurality of narrow grooves 28, then the water droplet and dust mixture collides with the shell and then is converged into the V-shaped double-low-point dirt collection groove under the action of gravity, finally the dirt is discharged through the dirt discharge pump, and the separated clean gas is discharged through the tail end exhaust pipe F and enters the rear purified gas exhaust pipe 35;
s4: the control system controls and adjusts: according to the excavating speed and the strength, the matched air supplementing flow is set through the adjusting air plate 44, the air inlet adjusting valve 45 and the intake air flow sensor 46, so that stable air supplementing, sucking and exhausting balance is formed between the mine air supplementing device ADI and the integrated dust removal device DRE, and the excavation, air supplementing, dust removal, air extraction and pollution discharge are matched.
The integrated dust removal device of the high-efficiency safe dust removal system for the mine can remove dust through a multi-pipe Venturi air-entraining structure and cyclone water mist catching and strengthening centrifugal separation component, can improve the dust removal separation effect and reliability of equipment, has an adjustable air supplement structure, can adjust the direction of an air outlet of an air distribution head according to the mining speed and strength, further adjusts the air outlet flow direction of compressed air, can better prevent dust from entering a rear roadway and enabling the dust to enter the dust removal device, controls the air supplement gas flow through a front end air adjusting plate, an air inlet adjusting valve and a flow sensor, better realizes the matching of air supplement and dust removal air-extraction, and has the characteristics of high dust removal efficiency, small volume, convenience in inspection and maintenance, safety, environmental protection and the like.
The operation method of the mining high-efficiency safe dust removal system can perform related positioning control on the air supply direction, the position of the air distribution box, the position of the tunneling mining head and the position of the dust removal device collecting air inlet head through the control system, achieves the best dust removal effect in the mining process, can perform related operation control on the tunneling mining speed, the dust removal air extraction flow, the dust removal water spray mist quantity, the fresh air supply quantity and the sewage discharge quantity, achieves matching in the operation process, can also independently and flexibly control related flow, and achieves matching control of related quantity through manual setting operation, so that high-efficiency safe dust removal is achieved, and the mining high-efficiency safe dust removal system can be widely applied to various mining and mineral separation production processes, and is particularly suitable for the mining and processing processes of coal mines with high requirements on safety and environmental protection.
The above description is further detailed in connection with the preferred embodiments of the present invention, and it is not intended to limit the practice of the invention to these descriptions. It will be apparent to those skilled in the art that various modifications, additions, substitutions, and substitutions can be made without departing from the spirit of the invention.
Claims (10)
1. The utility model provides a mining high-efficient safe dust pelletizing system which characterized in that: comprises an underground tunneling and mining device, an integrated dust removal device, a mine air supplementing device and a control system,
the underground tunneling and mining device is connected with the integrated dust removal device and is provided with a tunneling and mining head;
the integrated dust removal device comprises a dust collection air inlet head, an air entraining suction section, a water mist dust removal mixing section, a cyclone separation section, a separation blowdown section and a tail end exhaust pipe which are sequentially connected, wherein the dust collection air inlet head is positioned behind the tunneling mining head and consists of a net-shaped shell;
the mine air supplementing device is positioned above the integrated dust removal device and comprises an air distribution box, one end of the air distribution box is connected with a compressed air inlet pipeline, an air inlet adjusting valve and an air inlet flow sensor are arranged on the compressed air inlet pipeline, an adjusting air plate is arranged at the other end of the air distribution box and is positioned at one end of a tunneling working face, a cover plate is arranged at the upper end of the air distribution box, adjustable air distribution heads are arranged on the air distribution box and the cover plate through sealing rings and are distributed at intervals, an up-and-down through duct is formed in each adjustable air distribution head, the lower end of each duct is an air inlet, the upper end of each duct is an air outlet, the air inlet is positioned inside the air distribution box, the air outlet is positioned outside the air distribution box, an adjusting control unit is further arranged on the air distribution box, and the adjusting control unit is electrically connected with the air inlet adjusting valve, the air inlet flow sensor and the adjusting air plate;
and the control system is respectively and electrically connected with the underground tunneling and mining device, the integrated dust removal device and the adjusting and controlling unit of the mine air supplementing device.
2. The mining efficient and safe dust removal system according to claim 1, characterized in that: the adjustable air distribution head is of a spherical structure.
3. The mining efficient and safe dust removal system according to claim 1, characterized in that: bleed suction section includes bleed suction shell, installs a plurality of venturi spray tubes on the bleed suction shell, and the nozzle of venturi spray tube is deepened inside the casing and towards the rear to become certain inclination with bleed suction shell axis, a plurality of venturi spray tubes are linked together through inlet distribution box and compressed air intake pipe, inlet control valve, inlet flow sensor and the pressure sensor that admits air have set gradually in the compressed air intake pipe, inlet control valve, inlet flow sensor and the pressure sensor that admits air are connected with the control system electricity respectively.
4. The mining efficient and safe dust removal system according to claim 1, characterized in that: the water smoke removes dust and mixes the section and includes water smoke dust removal shell, and directional atomizing nozzle is installed to the hoop on the water smoke dust removal shell, installs atomizing nozzle in the water smoke dust removal shell, directional atomizing nozzle and atomizing nozzle all are linked together with the atomizing water pipeline, be provided with atomizing water regulating valve, flow sensor and pressure sensor on the atomizing water pipeline, atomizing water regulating valve, flow sensor and pressure sensor are connected with the control system electricity respectively.
5. The mining efficient and safe dust removal system according to claim 1, characterized in that: the cyclone separation section comprises a cyclone separation shell, the cyclone separation shell is of a conical structure, the small end of the cyclone separation shell is connected with the water mist dust removal mixing section, the large end of the cyclone separation shell is connected with the separation sewage discharge section, a flow distribution cone and a cyclone cone are arranged on the central axis of the cyclone separation shell, the head of the flow distribution cone and the head of the cyclone cone are of cone or streamline body flow distribution structures, the middle of the flow distribution cone and the cyclone cone are of spiral body structures, and the tail of the flow distribution cone and the tail of the cyclone cone are of streamline body or sphere body structures.
6. The mining efficient and safe dust removal system according to claim 1, characterized in that: the separation blowdown section is including separating the blowdown shell, separation blowdown shell is the toper structure, and separation blowdown shell stub end is connected with the cyclone separation section, and separation blowdown shell stub end is connected with terminal blast pipe, be provided with concentric water conservancy diversion toper separating drum in the separation blowdown shell, the ascending equipartition of separating drum axial has a plurality of slots, and the inside baffling piece that is provided with axial direction parallel or becomes certain angle of separating drum, the baffling piece is located between two adjacent rows of slots, and separation blowdown shell bottom both sides are provided with the dirty groove of collection, the dirty groove of collection links to each other with sewage pipes, is provided with the dredge pump on the sewage pipes, the dredge pump is pneumatic or hydraulic dredge pump.
7. The mining efficient and safe dust removal system according to claim 1, characterized in that: terminal blast pipe includes terminal blast pipe shell, terminal blast pipe shell is the toper structure, and terminal blast pipe shell stub end is connected with separation blowdown section, and terminal blast pipe shell stub end is connected with the gas purification blast pipe, be provided with the air discharge valve on the gas purification blast pipe.
8. The mining efficient and safe dust removal system according to claim 1, characterized in that: the underground tunneling and mining device is provided with a tunneling arm, the front end of the tunneling arm is provided with a tunneling and mining head, a tunneling and mining control unit is arranged in the tunneling arm and is electrically connected with a control system, and the lower part of the underground tunneling and mining device is also provided with a traveling crawler belt.
9. An operation method of the mining efficient and safe dust removal system based on any one of claims 1 to 8 is characterized in that: the method comprises the following steps:
s1: starting the mine air supplement device: fresh air is supplemented, part of air in the air distribution box is blown out from an air adjusting plate at the front end of the box body, the other part of air is blown out from an air outlet of the air distribution head, and the directions of the air outlet of the air adjusting plate and the air outlet of the air distribution head are adjusted according to the space shape of a field mining surface;
s2: starting the integrated dust removal device: setting corresponding air extraction quantity and atomization dust removal water supply quantity, and opening a compressed air inlet regulating valve, an atomization water regulating valve and a sewage pump compressed air valve to enable related gas flow and dust quantity to be matched with fresh air supply quantity;
s3: starting the underground tunneling exploitation device: the tunneling mining head starts to work, the tunneling speed and the tunneling strength are controlled through the tunneling mining control unit, and dust generated in the tunneling mining process enters the integrated dust removal device;
s4: the control system controls and adjusts: according to the excavating speed and the strength, the matched air supplementing flow is set through the adjusting air plate, the air inlet adjusting valve and the air inlet flow sensor, so that stable air supplementing, sucking and exhausting balance is formed between the mine air supplementing device and the integrated dust removal device, and the tunneling exploitation, air supplementing, dust removal, air extraction and pollution discharge are matched.
10. The operation method of the mining high-efficiency safe dust removal system according to claim 9, characterized by comprising the following steps: in the step S3, dust generated in the tunneling and mining process enters the integrated dust removal device, high-speed rotary flow airflow carrying water mist and dust particles from the front section of the dust removal device collides with the baffling sheet on the conical separation cylinder to intercept, a water drop and dust mixture is separated from air under the action of centrifugal force and passes through the narrow grooves, the water drop and dust mixture is collected to the sewage collection tank under the action of gravity after colliding with the shell and is discharged through the sewage discharge pump, and the separated clean gas is discharged through the tail end exhaust pipe.
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| CN202210889772.XA CN115263296A (en) | 2022-07-27 | 2022-07-27 | Efficient and safe dust removal system for mine and operation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117569861A (en) * | 2023-12-19 | 2024-02-20 | 亿斯德特种智能装备(大连)有限公司 | Airborne ventilation dust control device for underground coal mine mining working face and operation method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117569861A (en) * | 2023-12-19 | 2024-02-20 | 亿斯德特种智能装备(大连)有限公司 | Airborne ventilation dust control device for underground coal mine mining working face and operation method |
| CN117569861B (en) * | 2023-12-19 | 2024-04-12 | 亿斯德特种智能装备(大连)有限公司 | Airborne ventilation dust control device for underground coal mine mining working face and operation method |
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