CN114033464B - Fully-mechanized coal mining face self-tracking and multi-angle dust and gas integrated intelligent prevention and control system - Google Patents
Fully-mechanized coal mining face self-tracking and multi-angle dust and gas integrated intelligent prevention and control system Download PDFInfo
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- CN114033464B CN114033464B CN202111271660.XA CN202111271660A CN114033464B CN 114033464 B CN114033464 B CN 114033464B CN 202111271660 A CN202111271660 A CN 202111271660A CN 114033464 B CN114033464 B CN 114033464B
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- 239000000428 dust Substances 0.000 title claims abstract description 51
- 238000005065 mining Methods 0.000 title claims abstract description 50
- 239000003245 coal Substances 0.000 title claims abstract description 19
- 230000002265 prevention Effects 0.000 title claims abstract description 13
- 238000003825 pressing Methods 0.000 claims abstract description 14
- 238000000605 extraction Methods 0.000 claims description 17
- 230000033001 locomotion Effects 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 2
- 230000001276 controlling effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004630 mental health Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Classifications
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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
- E21F1/04—Air ducts
-
- 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
-
- 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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/002—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying geometry within the pumps, e.g. by adjusting vanes
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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)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Means For Separation Of Solids (AREA)
- Ventilation (AREA)
Abstract
The invention discloses a fully-mechanized coal mining face self-tracking system and a multi-angle dust and gas integrated intelligent prevention and control system, which comprise a compressed air component, an air draft component and a control component which are arranged in a roadway of a fully-mechanized coal mining face of a mine; the air pressing component comprises a mining air pressing cylinder, the front end of the mining air pressing cylinder is sequentially provided with a multi-angle intelligent adjusting lateral air outlet and a direct air outlet, and the mining air pressing cylinder is provided with an automatic control module I; the air draft assembly comprises a mining air draft tube, the tail end of the air draft tube is connected with an exhaust tube connected with the outside of a roadway, the front part of the mining air draft tube is sequentially connected with a telescopic air draft tube and a multi-angle intelligent regulation air draft tube, and the multi-angle regulation connecting support is provided with an automatic control module II; the control component comprises dust-gas concentration monitors which are respectively arranged at the front end of the straight air outlet and the front end of the multi-angle intelligent regulation air suction barrel. Is a comprehensive digging working face self-tracking and multi-angle dust and gas integrated intelligent prevention and control system with strong functionality.
Description
Technical Field
The invention relates to mine ventilation safety technology, in particular to a comprehensive digging working face self-tracking and multi-angle dust and gas integrated intelligent prevention and control system.
Background
In recent years, along with the continuous improvement of the mechanical degree of a coal mine, the continuous increase of the mining intensity and the rapid increase of the dust concentration of underground fully-mechanized coal mining working surfaces, wherein gas is applied to part of the fully-mechanized coal mining working surfaces, and dust and gas are accumulated in the fully-mechanized coal mining process, so that the explosion risk is increased, the working environment is deteriorated, and the safety production of a mine and the physical and mental health of workers are seriously threatened. At present, a single press-in ventilation mode is generally adopted for a coal mine fully-mechanized working face with gas at home, the air inlet channel is limited by a roadway structure, meanwhile, the air inlet channel is also an air return channel, and the direction angle, the air quantity and the front-back displacement of an air outlet of an air duct cannot be regulated and controlled dynamically in real time, so that the concentration of dust and gas is unstable near a head-on position, a high-concentration area cannot be effectively treated, and a high disaster risk exists.
Disclosure of Invention
The invention aims to provide an integrated intelligent prevention and control system for air inlet and air outlet separation, intelligent control of air outlet air quantity and air direction, intelligent control of air inlet orientation angle position comprehensive digging working face self-tracking and multi-angle dust gas, which solves the problems that an air inlet channel is an air return channel, and the air inlet orientation angle and front-back displacement cannot be adjusted.
The technical scheme adopted by the invention is that the self-tracking system of the fully-mechanized coal mining face and the multi-angle dust and gas integrated intelligent prevention and control system comprise a compressed air component, an air draft component and a control component which are arranged in a roadway of the fully-mechanized coal mining face of a mine; the air compressing assembly comprises a mining air compressing barrel, the front end of the mining air compressing barrel is sequentially provided with a multi-angle intelligent-adjusting lateral air outlet and a direct air outlet, an air quantity control valve is arranged in the direct air outlet, the multi-angle intelligent-adjusting lateral air outlet comprises a plurality of strip-shaped holes formed in the barrel body at the front end of the mining air compressing barrel, a fan blade mechanism is arranged in each strip-shaped hole through a connecting rotating shaft, and the mining air compressing barrel is provided with an automatic control module for controlling the air outlet angle of the fan blade mechanism and the opening and closing angle of the air quantity control valve; the tail end of the mining air extraction barrel is connected with a fan, the fan is arranged on the scraper conveyor through a fan supporting plate, the tail end of the fan is connected with an exhaust pipe connected with the outside of a roadway, the front part of the mining air extraction barrel is sequentially connected with a telescopic air extraction barrel and a multi-angle intelligent regulation air extraction barrel, the multi-angle intelligent regulation air extraction barrel is arranged above a heading machine at the position of the roadway head on a fully-mechanized coal mining face through a multi-angle regulation connecting support, and the multi-angle regulation connecting support is provided with an automatic control module II for realizing horizontal rotation, front-back movement and pitching movement of the multi-angle intelligent regulation air extraction barrel; the control assembly comprises dust-gas concentration monitors which are respectively arranged at the front ends of the straight air outlet and the multi-angle intelligent regulation air extraction cylinder, and a ground control center, a well bottom signal base station, the dust-gas concentration monitors, an automatic control module I and an automatic control module II are connected through a mining data transmission line.
As the preference of above-mentioned scheme, the multi-angle is adjusted linking bridge includes "C" type flat bottom support, is located the bottom plate of flat bottom support below, and flat bottom support both ends head is installed in the side of multi-angle intelligent regulation air extraction barrel to be equipped with the pivot at the contact position and make multi-angle intelligent regulation air extraction barrel regard as the pivot to rotate in 20 ~ 20 and realize the every single move motion of multi-angle intelligent regulation air extraction barrel in the center, nimble rotation removes, makes the dust gas range of drawing of multi-angle intelligent regulation air extraction barrel wider, and efficiency is higher, and the structure is nimble firm, effectively uses manpower sparingly.
Further preferably, the pulley below rotary mechanism and rotary mechanism which enable the flat-bottom support to horizontally rotate is arranged at the bottom of the flat-bottom support, and the bottom plate is provided with a sliding rail which is correspondingly matched with the pulley of the flat-bottom support and used for enabling the flat-bottom support to move back and forth, so that the multi-angle intelligent regulation air suction barrel is driven to move back and forth, the dust gas suction range of the multi-angle intelligent regulation air suction barrel is wider, and the flexibility and the practicability are high.
Further preferably, the wind removal machine comprises a dust control wind removal machine, a wind shielding turbulent flow dustproof net arranged on the dust control wind removal machine, a gas control wind removal box connected with the rear end of the dust control wind removal machine, and a purified air outlet arranged at the rear end of the gas control wind removal box, wherein the wind shielding turbulent flow dustproof net is used for settling dust and separating out gas, the gas control wind removal box is used for adsorbing and controlling the gas, the dust gas which is not separated during dust gas treatment is prevented from being treated, the drawn-in dust gas cannot be effectively cleaned, so that environmental pollution is caused, dust gas is separated and settled when the dust gas control wind removal structure is integrated, and air is effectively purified.
Further preferably, the dust-gas concentration monitor is monitored by a sensor, the cost is controllable, and the monitoring data is accurate.
The invention has the beneficial effects that:
(1) The mining air compressing cylinder is provided with an automatic control module I, an intelligent control scheme signal is transmitted to the automatic control module I to realize intelligent control of the air outlet angle of the fan blade mechanism and the opening and closing angle of the air volume control valve, the angle of the fan blade in the fan blade mechanism influences the radial air flow direction, concentrated blowing can be realized by changing the angle of the fan blade in the fan blade mechanism to blow away dust and gas in places with high gas concentration, efficient blowing away of dust and gas in concentrated areas is facilitated, intelligent control is realized, and time and labor are saved.
(2) The multi-angle adjusting connecting support is provided with an automatic control module II, intelligent control scheme signals are transmitted to the automatic control module II, so that horizontal rotation, front-back movement and intelligent regulation and control of pitching movement of the multi-angle intelligent adjusting air suction barrel are realized, fixed-point suction is conveniently carried out on dust and gas, the front half part of the air suction barrel is installed above a heading machine and moves back and forth relative to the heading machine, the air suction barrel can also flexibly move back and forth while following the heading machine, the dust gas suction range is enlarged, the suction efficiency is high, and the time cost and the labor cost are saved.
(3) The dust-gas concentration monitor is respectively arranged at the front ends of the straight air outlet and the multi-angle intelligent regulation air extraction cylinder, so that the real-time monitoring of the working process of the fully-mechanized coal mining working face is ensured, the intelligent control scheme signal is updated in real time through the ground control center, and the high-efficiency removal of dust and gas in the working process is effectively ensured by transmitting the intelligent control scheme signal to the first control module and the second automatic control module through the well bottom signal base station.
(4) The mining air pressing cylinder and the multi-angle intelligent adjusting exhaust cylinder are separated for operation, so that the dust and gas removal efficiency is improved, and the problem that the dust and gas high-concentration area cannot be effectively treated due to the fact that the air inlet channel is an air return channel is avoided.
In summary, the intelligent comprehensive dust and gas cleaning system has the characteristics of high efficiency and comprehensiveness of dust and gas cleaning, flexibility of application of the compressed air cylinder and the exhaust cylinder and real-time performance of intelligent prevention and control, and is a comprehensive digging working face self-tracking and multi-angle dust and gas integrated intelligent prevention and control system with strong functionality.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural view of a fan blade mechanism.
Fig. 3 is a schematic diagram of a local structure of the multi-angle intelligent regulation air extractor.
Fig. 4 is a schematic structural view of the fan.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
with reference to fig. 1-4, a fully-mechanized coal mining face self-tracking system and a multi-angle dust and gas integrated intelligent prevention and control system are composed of a compressed air component 1, an air draft component 2 and a control component 3 which are arranged in a roadway of a fully-mechanized coal mining face of a mine.
The air compressing assembly 1 comprises a mining air compressing cylinder 13.
The front end of the mining air pressing cylinder 13 is sequentially provided with a multi-angle intelligent adjusting lateral air outlet 12 and a direct air outlet 11.
The straight air outlet 11 is internally provided with an air quantity control valve, the multi-angle intelligent adjusting lateral air outlet 12 is composed of a plurality of strip-shaped holes formed in the front end barrel body of the mining air pressing barrel 13, and each strip-shaped hole is internally provided with a fan blade mechanism 121 through a connecting rotating shaft 122.
The mining air pressing cylinder 13 is provided with an automatic control module for controlling the air outlet angle of the fan blade mechanism 121 and the opening and closing angle of the air quantity control valve.
The extraction assembly 2 comprises a mining extraction drum 22.
The tail end of the mining air extractor 22 is connected with an air extractor 23, the air extractor 23 is arranged on the scraper conveyor 21 through a fan supporting plate 24, and the tail end of the air extractor 23 is connected with an exhaust pipe connected to the outside of the tunnel.
The air removal fan 23 comprises a dust control air removal fan 231, a wind shielding turbulent flow dustproof net 232 arranged on the dust control air removal fan, a gas control air removal box 233 connected with the rear end of the dust control air removal fan, and a purified air outlet positioned at the rear end of the gas control air removal box.
The wind shielding turbulent dust screen 232 is used for separating out gas from settled dust, and the gas control and removal box 233 is used for adsorbing and removing gas.
The front part of the mining air extraction cylinder 22 is sequentially connected with a telescopic air cylinder 25 and a multi-angle intelligent adjusting air extraction cylinder 26.
The multi-angle intelligent adjusting air extractor 26 is arranged above the heading machine 5 at the position of the roadway head-on of the fully-mechanized coal mining face through the multi-angle adjusting connecting bracket 4.
The multi-angle adjusting connecting bracket 4 consists of a C-shaped flat bottom support 41 and a bottom plate 42 positioned below the flat bottom support 41.
The two ends of the flat bottom support 41 are arranged on the side edges of the multi-angle intelligent adjusting air suction barrel 26, and a rotating shaft 411 is arranged at the contact part to enable the multi-angle intelligent adjusting air suction barrel 26 to rotate in the range of-20 degrees to 20 degrees by taking the rotating shaft as the center so as to realize the pitching motion of the multi-angle intelligent adjusting air suction barrel 26.
The bottom of the flat bottom support 41 is provided with a rotating mechanism for horizontally rotating the flat bottom support 41 and a pulley below the rotating mechanism, and the bottom plate 42 is provided with a sliding rail 421 correspondingly matched with the pulley of the flat bottom support 41 for enabling the flat bottom support 41 to move back and forth so as to drive the multi-angle intelligent regulation air extractor 26 to move back and forth.
The multi-angle adjusting connecting bracket 4 is provided with an automatic control module II for realizing the horizontal rotation, the front-back movement and the pitching movement of the multi-angle intelligent adjusting air suction barrel 26.
The control assembly 3 comprises dust-gas concentration monitors which are respectively arranged at the front end of the straight air outlet 11 and the multi-angle intelligent regulation air suction barrel, and the dust-gas concentration monitors are monitored by adopting sensors.
The ground control center 31, the well bottom signal base station 32, the dust-gas concentration monitor, the automatic control module I and the automatic control module II are connected through a mining data transmission line.
The bottom hole signal base station 32 is used for converting the data received from the dust-gas concentration monitor and then transmitting the converted data to the ground control center 31, and is also used for receiving an intelligent control scheme signal transmitted by the ground control center 31, the intelligent control scheme signal is transmitted to the automatic control module I to automatically adjust the opening and closing of the air volume control valve of the mining air pressing cylinder 13 and the fan blade angle of the fan blade mechanism 121, and the intelligent control scheme signal is transmitted to the automatic control module II to intelligently adjust the air opening angle air volume and the position of the multi-angle intelligent air pumping cylinder 26.
After the mine works, the fully-mechanized working face generates a large amount of dust and gas, the dust and gas concentration area, concentration and other signals are transmitted to the bottom hole signal base station 32 through the dust-gas concentration monitor, the bottom hole signal base station 32 transmits the signals to the ground control center 31 through a mine data transmission line, and after the intelligent computer of the ground control center 31 automatically analyzes the results, an optimal dust-gas control and removal scheme is generated and the signals are fed back to the bottom hole signal base station 32.
After receiving the signal, the bottom hole signal base station 32 transmits the signal to the automatic control module I, and optimally adjusts the opening and closing of the air quantity control valve of the air compressing cylinder 13 and the angle of the fan blades of the fan blade mechanism 121, so that the fan blades blow away the gas dust at fixed points.
And the signal is transmitted to an automatic control module II, the air quantity and the position of the air opening angle of the multi-angle intelligent regulation air suction barrel 26 are regulated and controlled, the rotation angle and the front and back positions of the reversing air suction barrel are regulated, and dust and gas are pumped out at fixed points.
The dust and gas removed are conveyed to a blower 23 through a mine air extractor 22, the dust is settled by a wind shielding turbulence dust screen 232, the gas is removed by adsorption through a gas control box 233, and finally the cleaned air is discharged out of the mine through a purified air outlet from an exhaust pipe.
Claims (3)
1. Comprehensive digging working face self-tracking system and multi-angle dust gas integrated intelligent prevention and control system is characterized in that: the device comprises a compressed air component (1), an air draft component (2) and a control component (3) which are arranged in a roadway of a fully-mechanized coal mining working surface of a mine; the air pressing assembly (1) comprises a mining air pressing cylinder (13), the front end of the mining air pressing cylinder (13) is sequentially provided with a multi-angle intelligent-adjusting lateral air outlet (12) and a direct air outlet (11), an air quantity control valve is arranged in the direct air outlet (11), the multi-angle intelligent-adjusting lateral air outlet (12) comprises a plurality of strip-shaped holes formed in the front end cylinder body of the mining air pressing cylinder (13), each strip-shaped hole is internally provided with a fan blade mechanism (121) through a connecting rotating shaft (122), and the mining air pressing cylinder (13) is provided with an automatic control module for controlling the air outlet angle of the fan blade mechanism (121) and the opening and closing angle of the air quantity control valve; the air draft assembly (2) comprises a mining air draft tube (22), the tail end of the mining air draft tube (22) is connected with an air removal machine (23), the air removal machine (23) is installed on the scraper conveyor (21) through a fan supporting plate (24), the tail end of the air removal machine (23) is connected with an exhaust pipe connected to the outside of a roadway, the front part of the mining air draft tube (22) is sequentially connected with a telescopic air draft tube (25) and a multi-angle intelligent adjusting air draft tube (26), the multi-angle intelligent adjusting air draft tube (26) is installed above a heading machine (5) at the position of the roadway head on of a fully-mechanized mining face through a multi-angle adjusting connecting bracket (4), and the multi-angle adjusting connecting bracket (4) is provided with an automatic control module which is used for realizing horizontal rotation, forward and backward movement and pitching movement of the multi-angle intelligent adjusting air draft tube (26); the control assembly (3) comprises dust-gas concentration monitors which are respectively arranged at the front end of the straight air outlet (11) and the multi-angle intelligent regulation air extraction cylinder, and a ground control center (31), a well bottom signal base station (32), the dust-gas concentration monitors, an automatic control module I and an automatic control module II are connected through a mining data transmission line; the multi-angle adjusting connecting support (4) comprises a C-shaped flat bottom support (41), a bottom plate (42) located below the flat bottom support (41), two ends of the flat bottom support (41) are installed on the side edge of the multi-angle intelligent adjusting air suction barrel (26), a rotating shaft (411) is arranged at a contact position, the multi-angle intelligent adjusting air suction barrel (26) rotates by-20 degrees to 20 degrees with the rotating shaft (411) as the center to realize pitching movement of the multi-angle intelligent adjusting air suction barrel (26), the air removal machine (23) comprises a dust control air removal machine (231), a wind-blocking turbulence dustproof net (232) arranged on the dust control air removal machine, a gas control air removal box (233) connected with the rear end of the dust control air removal machine, a purified air outlet located at the rear end of the gas control air removal box, and the wind-blocking turbulence dustproof net (232) is used for settling dust separation gas, and the gas control air removal box (233) is used for adsorbing and controlling gas removal.
2. The fully-mechanized coal mining face self-tracking system and multi-angle dust and gas integrated intelligent prevention and control system according to claim 1, characterized in that: the bottom of the flat bottom support (41) is provided with a rotating mechanism which enables the flat bottom support (41) to horizontally rotate and a pulley below the rotating mechanism, and a bottom plate (42) is provided with a sliding rail (421) which is correspondingly matched with the pulley of the flat bottom support (41) and is used for enabling the flat bottom support (41) to move back and forth so as to drive the multi-angle intelligent adjusting air suction barrel (26) to move back and forth.
3. The fully-mechanized coal mining face self-tracking system and multi-angle dust and gas integrated intelligent prevention and control system according to claim 1, characterized in that: the dust-gas concentration monitor is monitored by a sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111271660.XA CN114033464B (en) | 2021-10-29 | 2021-10-29 | Fully-mechanized coal mining face self-tracking and multi-angle dust and gas integrated intelligent prevention and control system |
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| CN202111271660.XA CN114033464B (en) | 2021-10-29 | 2021-10-29 | Fully-mechanized coal mining face self-tracking and multi-angle dust and gas integrated intelligent prevention and control system |
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| CN114033464A CN114033464A (en) | 2022-02-11 |
| CN114033464B true CN114033464B (en) | 2023-08-15 |
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| CN116971820A (en) * | 2023-07-31 | 2023-10-31 | 窑街煤电集团有限公司 | Coal seam gas monitoring and releasing method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109653784A (en) * | 2018-12-10 | 2019-04-19 | 西安科技大学 | The mechanical regulation device of excavation face in coal mine wind flow field |
| CN110593937A (en) * | 2019-10-21 | 2019-12-20 | 青岛理工大学 | Movable type ventilation, dust removal and cooling integrated device for mine underground roadway driving face |
| CN112945862A (en) * | 2021-02-01 | 2021-06-11 | 重庆梅安森科技股份有限公司 | Handheld terminal of patrolling and examining of colliery gas |
| CN112967413A (en) * | 2021-02-01 | 2021-06-15 | 重庆梅安森科技股份有限公司 | Coal mine gas dynamic patrol system and method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3143465A4 (en) * | 2014-05-11 | 2018-01-31 | Howden Alphair Ventilating Systems Inc. | Modular controlling system for ventilation equipment and methods of using the same |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109653784A (en) * | 2018-12-10 | 2019-04-19 | 西安科技大学 | The mechanical regulation device of excavation face in coal mine wind flow field |
| CN110593937A (en) * | 2019-10-21 | 2019-12-20 | 青岛理工大学 | Movable type ventilation, dust removal and cooling integrated device for mine underground roadway driving face |
| CN112945862A (en) * | 2021-02-01 | 2021-06-11 | 重庆梅安森科技股份有限公司 | Handheld terminal of patrolling and examining of colliery gas |
| CN112967413A (en) * | 2021-02-01 | 2021-06-15 | 重庆梅安森科技股份有限公司 | Coal mine gas dynamic patrol system and method |
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