CN111622798B - Intelligent centralized monitoring system for mine underground cooling - Google Patents
Intelligent centralized monitoring system for mine underground cooling Download PDFInfo
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- CN111622798B CN111622798B CN202010530566.0A CN202010530566A CN111622798B CN 111622798 B CN111622798 B CN 111622798B CN 202010530566 A CN202010530566 A CN 202010530566A CN 111622798 B CN111622798 B CN 111622798B
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- 238000001816 cooling Methods 0.000 title claims abstract description 99
- 238000012544 monitoring process Methods 0.000 title claims abstract description 22
- 238000009423 ventilation Methods 0.000 claims abstract description 26
- 238000007789 sealing Methods 0.000 claims abstract description 23
- 229910001172 neodymium magnet Inorganic materials 0.000 claims abstract description 21
- 239000000523 sample Substances 0.000 claims description 10
- 238000000746 purification Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 5
- 238000013016 damping Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 238000005273 aeration Methods 0.000 claims 1
- 238000001125 extrusion Methods 0.000 abstract description 7
- 239000007789 gas Substances 0.000 description 16
- 230000008602 contraction Effects 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 238000004887 air purification Methods 0.000 description 3
- 238000012806 monitoring device Methods 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- E21F1/04—Air ducts
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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
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/02—Suspension devices for tubes or the like, e.g. for ventilating ducts
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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
- 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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- 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
- E21F3/00—Cooling or drying of air
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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)
- Ventilation (AREA)
Abstract
The invention discloses an intelligent centralized monitoring system for mine underground cooling, which comprises a ground ventilation and cooling system, underground centralized cooling cranes and cooling air pipeline hangers, wherein the ground ventilation and cooling system is communicated with the cooling air pipeline hangers through pipelines; the mine cooling ventilation pipeline comprises a casing, a lifting slide rod, a plurality of air holes, a neodymium magnet lifting block, an electromagnet, an extrusion spring and sealing covers, wherein the neodymium magnet lifting block is movably inserted in the lifting slide rod, the electromagnet matched with the neodymium magnet lifting block is arranged in the casing, the bottom of the electromagnet is fixedly provided with the extrusion spring, and the sealing covers on two sides are communicated with an air chamber through corrugated pipes.
Description
Technical Field
The invention relates to the technical field of mine underground cooling monitoring, in particular to an intelligent centralized monitoring system for mine underground cooling.
Background
Along with the gradual deep underground of mine, the influence by geothermol power is also more and more serious, and the health and the work efficiency of workman are seriously influenced to the maximum temperature of many 500M following mines reaches 40 degrees, therefore the country promulgates the regulation, and all mine temperature surpass 30 degrees and strictly prohibit the construction, and the mine cooling has also put forward the schedule, and current underground cooling mode mainly includes: surface centralized type, underground centralized type and decentralized type;
in the prior art, the application number of the system is 'CN 201410142696.1', and the system comprises a refrigerating device arranged in a main tunnel or a main tunnel equipment chamber in the mine, wherein the refrigerating device is respectively communicated with a 1# mine heat exchange device and a 2# mine heat exchange device; the refrigerating device is a refrigerating circulation system formed by connecting a condenser, an evaporator and a compressor, and the condenser is connected with the No. 2 mine heat exchange device through a cooling water pump and a pipeline to form a closed cooling water circulation system; the evaporator is connected with the 1# mine heat exchange device through a freezing water pump and a pipeline to form a closed freezing water circulation system, the system is simple in structure, small in cold loss, high in heat exchange efficiency and low in running cost, and can be widely applied to a mine cooling system as a novel refrigeration cooling system.
However, the mine underground refrigeration cooling system still has obvious defects in the using process: 1. the device can only cool the interior of the mine, has single function, and is high in integration degree and favorable for saving space in a region with relatively narrow space, namely the mine; 2. the device adopts a mine underground refrigeration cooling system, and the cooling mode can not perform zone cooling on areas with different temperatures.
Disclosure of Invention
The invention aims to provide an intelligent centralized monitoring system for mine underground cooling, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
an intelligent centralized monitoring system for mine underground cooling comprises a ground ventilation cooling system, underground centralized cooling cranes and cooling air pipeline hangers, wherein the ground ventilation cooling system is communicated with the cooling air pipeline hangers through pipelines, and a plurality of underground centralized cooling cranes are hung on the cooling air pipeline hangers;
rubber wheel grooves are formed in two sides of the cooling air pipeline hanging frame, a plurality of air holes are uniformly formed in the bottom of the cooling air pipeline hanging frame, an air hole opening seat is fixedly installed between each two adjacent pairs of air holes, a pair of lifting slide rods are fixedly installed on the air hole opening seats, neodymium magnet lifting blocks are movably inserted on the lifting slide rods, traction ropes are fixedly connected to the bottoms of the neodymium magnet lifting blocks, the other ends of the traction ropes penetrate through the air hole opening seats and are respectively connected with air hole sealing covers on the two sides, the air hole sealing covers are movably installed on pin shaft seats through pin shafts, and reset springs are arranged in the pin shafts;
the underground centralized cooling crane comprises a shell, wherein a pair of rubber wheels are movably arranged on two sides of the shell respectively, wheel shafts of the rubber wheels are fixedly connected with a driving shaft of a stepping motor, the stepping motor is fixedly arranged on the shell, the rubber wheels on two sides are movably arranged in rubber wheel grooves on two sides of a cooling air pipeline hanger, an electromagnet matched with a neodymium magnet lifting block is arranged in the shell, the electromagnet and the neodymium magnet lifting block are arranged oppositely in the same polarity, a prying connecting rod is fixedly arranged at the bottom of the electromagnet, the prying connecting rod is movably inserted on a connecting rod seat, an extrusion spring is fixedly arranged at the bottom of the electromagnet, one end, away from the electromagnet, of the extrusion spring is fixedly connected with the connecting rod seat, a pair of prying plates are movably arranged at the bottom of the prying connecting rod, one side, away from the prying connecting rod, of the prying plates is movably connected with a sealing cover, and the bottom of the sealing cover is connected with a telescopic sleeve, the bottom of the sealing cover is also fixedly provided with a contraction spring, one end of the contraction spring, far away from the sealing cover, is fixedly connected to the inner wall of the shell, and the sealing cover on two sides is communicated with the air chamber through a corrugated pipe.
Preferably, the bottom of the shell is fixedly provided with a temperature sensor, an infrared monitoring probe and a gas detection probe.
Preferably, the upper part of the cooling ventilating duct rack is fixedly connected to the top of the working face through a damping support.
Preferably, the casing still installs the cooperation rubber tyer respectively along cooling air pipe hanger advancing direction both sides, the cooperation rubber tyer activity is supported and is leaned on in cooling air pipe hanger bottom.
Preferably, the bellows communicates with the outlet duct in the air chamber, outlet duct bottom and cooling ventilation pipe intercommunication, be provided with one-way air outlet valve in the cooling ventilation pipe, bellows one end and gaseous purification box intercommunication are kept away from to the outlet duct, the gaseous purification box is kept away from the air inlet intercommunication that outlet duct one end and air chamber were seted up, the outlet duct is close to gaseous purification box one end and installs one-way admission valve.
Compared with the prior art, the invention has the beneficial effects that:
1. the integrated type temperature monitoring device has the advantages that the integrated type temperature monitoring device is adopted, so that the temperature, video and gas harmful substance monitoring can be carried out on different areas, and the temperature and ventilation can be carried out in different areas according to the requirements of the different temperature areas, so that the function of the device is diversified;
2. the invention can ventilate different areas, evacuate harmful gas and cool down, ensure the temperature and gas pollutants in the mine to be kept in limited range, improve the working environment in the mine and improve the working safety;
the integrated monitoring device for the mine temperature and the gas pollutants can monitor the temperature, the video and the gas pollutants in different areas, ventilate the different areas in a targeted manner, evacuate and cool the harmful gases, ensure that the temperature and the gas pollutants in the mine are kept in a limited range, improve the operation environment in the mine and improve the operation safety.
Drawings
FIG. 1 is a schematic view of the overall structure of the centralized cooling monitoring system of the present invention;
FIG. 2 is a schematic view of the underground centralized cooling crane of the present invention;
FIG. 3 is a schematic diagram illustrating the operation of the electromagnet of the present invention;
fig. 4 is a schematic structural view of the bottom of the cooling ventilation duct hanger of the present invention;
FIG. 5 is a schematic view showing the overall structure of the inside of the air cell of the present invention.
In the figure: the device comprises a ground ventilation cooling system 1, an underground centralized cooling crane 2, a cooling ventilation pipeline hanger 3, a rubber wheel groove 4, a 5-wind hole, a 6-wind hole opening seat, a 7-lifting slide rod, a 8-neodymium magnet lifting block, a 9-pulling rope, a 10-wind hole closing cover, a 11-pin shaft seat, a 12 shell, a 13-rubber wheel, a 14 electromagnet, a 15 prying connecting rod, a 16-connecting rod seat, a 17 extrusion spring, a 18 prying plate, a 19 sealing cover, a 20 telescopic sleeve, a 21-contracting spring, a 22-corrugated pipe, a 23-air chamber, a 24-temperature sensor, a 25-infrared monitoring probe, a 26-gas detection probe, a 27-damping support, a 28-matching rubber wheel, a 29-air outlet pipe, a 30-cooling ventilation pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution:
an intelligent centralized monitoring system for mine underground cooling comprises a ground ventilation and cooling system 1, underground centralized cooling cranes 2 and cooling air pipeline hangers 3, wherein the ground ventilation and cooling system 1 is communicated with the cooling air pipeline hangers 3 through pipelines, and a plurality of underground centralized cooling cranes 2 are hung on the cooling air pipeline hangers 3;
the method comprises the following steps that a plurality of underground centralized cooling cranes 2 are mounted on a cooling ventilating duct hanger 3, different underground centralized cooling cranes 2 are respectively arranged in different areas, the movement of the underground centralized cooling cranes 2 is utilized to intensively monitor the temperature, the concentration of harmful gas and the working condition of personnel in the area, and monitoring information is transmitted back to a ground monitoring room;
rubber wheel grooves 4 are formed in two sides of a cooling air pipeline hanger 3, a plurality of air holes 5 are uniformly formed in the bottom of the cooling air pipeline hanger 3, an air hole opening seat 6 is fixedly installed between every two adjacent air holes 5, a pair of lifting slide bars 7 are fixedly installed on the air hole opening seats 6, neodymium magnet lifting blocks 8 are movably inserted on the lifting slide bars 7, traction ropes 9 are fixedly connected to the bottoms of the neodymium magnet lifting blocks 8, the other ends of the traction ropes 9 penetrate through the air hole opening seats 6 to be respectively connected with air hole sealing covers 10 on the two sides, the air hole sealing covers 10 are movably installed on a pin shaft seat 11 through pin shafts, and reset springs are arranged in the pin shafts;
the underground centralized cooling crane 2 comprises a shell 12, a pair of rubber wheels 13 are respectively movably arranged on two sides of the shell 12, wheel shafts of the rubber wheels 13 are fixedly connected with a driving shaft of a stepping motor 33, the stepping motor 33 is fixedly arranged on the shell 12, the rubber wheels 13 on the two sides are movably arranged in rubber wheel grooves 4 on two sides of a cooling ventilation pipeline hanger 3, an electromagnet 14 matched with a neodymium magnet lifting block 8 is arranged in the shell 12, the electromagnet 14 and the neodymium magnet lifting block 8 are arranged in a homopolar and opposite mode, a prying connecting rod 15 is fixedly arranged at the bottom of the electromagnet 14, the prying connecting rod 15 is movably inserted on a connecting rod seat 16, an extrusion spring 17 is fixedly arranged at the bottom of the electromagnet 14, one end, away from the electromagnet 14, of the extrusion spring 17 is fixedly connected with the connecting rod seat 16, a pair of prying plates 18 is movably arranged at the bottom of the prying connecting rod 15, one side, away from the prying connecting rod 15, of the prying plates 18 is movably connected with a sealing cover 19, and a telescopic sleeve 20 is connected at the bottom of the sealing cover 19, the bottom of the sealing cover 19 is also fixedly provided with a contraction spring 21, one end of the contraction spring 21, which is far away from the sealing cover 19, is fixedly connected to the inner wall of the shell 12, and the sealing covers 19 on the two sides are communicated with an air chamber 23 through a corrugated pipe 22.
Referring to the attached figure 1 of the specification, cooling air flows in the direction of an arrow, the device is used for being matched with a ground centralized cooling system for use, cooling air is input at an air inlet of a mine and flows out through an air outlet to form gas circulation, when the ground centralized cooling mode cannot meet the requirement of mine cooling, the device cooling system is used for performing compensation cooling on each area, when the temperature in the area monitored by the underground centralized cooling crane 2 during moving exceeds a limit temperature, the underground centralized cooling crane 2 is accurately moved to a specific position through a stepping motor 33, so that an electromagnet is matched with a neodymium magnet lifting block 8, a power supply in the underground centralized cooling crane 2 supplies power to the electromagnet 14, at the moment, the electromagnet 14 and the neodymium magnet lifting block 8 generate repulsion force in the same stage, and the neodymium magnet lifting block 8 moves upwards on a lifting slide rod 7, the neodymium magnet lifting block 8 ascends to pull the traction rope 9, and then the air hole sealing cover 10 is driven to be opened, the inside refrigerating air can flow out through the air hole 5, synchronously, the electromagnet 14 moves downwards under the action of the repulsive force of the neodymium magnet lifting block 8, the electromagnet 14 moves downwards to drive the prying connecting rod 15 to move downwards, the prying connecting rod 15 moves downwards to drive the prying plate 18 to tilt away from one end of the prying connecting rod 15, the prying connecting rod 15 tilts to drive the sealing covers 19 on two sides to lift up so as to be matched with the air hole 5, at the moment, the cold air enters the air chamber 23 through the corrugated pipe 22 through the sealing covers 19 and flows out through the cooling ventilation pipe 30, so that the area is cooled, if the harmful gas in the area exceeds the standard, the area is pumped out by using the ground ventilation cooling system 1, the gas enters the air chamber 23 through the air inlet 32, after particulate matter is filtered, the cold air enters the cooling ventilation pipe hanger 3 through the sealing covers 19, thereby realizing the extraction of harmful gases.
Preferably, a temperature sensor 24, an infrared monitoring probe 25 and a gas detection probe 26 are fixedly mounted at the bottom of the housing 12, and the air condition, the temperature and the working condition inside the mine are monitored through the temperature sensor 24, the infrared monitoring probe 25 and the gas detection probe 26.
Preferably, the upper part of the cooling ventilation pipeline hanger 3 is fixedly connected to the top of the working surface through a damping bracket 27.
Preferably, the casing 12 is further provided with matching rubber wheels 28 respectively on two sides along the advancing direction of the cooling ventilation duct rack 3, and the matching rubber wheels 28 movably abut against the bottom of the cooling ventilation duct rack 3.
Preferably, the corrugated pipe 22 is communicated with an air outlet pipe 29 in the air chamber 23, the bottom of the air outlet pipe 29 is communicated with a cooling ventilation pipe 30, a one-way air outlet valve is arranged in the cooling ventilation pipe 30, one end of the air outlet pipe 29, which is far away from the corrugated pipe 22, is communicated with an air purification box 31, one end of the air purification box 31, which is far away from the air outlet pipe 29, is communicated with an air inlet 32 formed in the air chamber 23, and one-way air inlet valve is arranged at one end of the air outlet pipe 29, which is close to the air purification box 31.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a mine is cooling intelligence centralized monitoring system in pit, includes ground aeration cooling system (1), underground concentration cooling crane (2) and cooling air pipe stores pylon (3), its characterized in that: the ground ventilation and cooling system (1) is communicated with a cooling ventilating duct hanger (3) through a pipeline, and a plurality of underground centralized cooling cranes (2) are hung on the cooling ventilating duct hanger (3);
rubber wheel grooves (4) are formed in two sides of the cooling ventilating duct hanging rack (3), a plurality of air holes (5) are uniformly formed in the bottom of the cooling ventilating duct hanging rack (3), an air hole opening seat (6) is fixedly installed between every two adjacent air holes (5), a pair of lifting slide rods (7) is fixedly installed on the air hole opening seat (6), neodymium magnet lifting blocks (8) are movably inserted on the lifting slide rods (7), a traction rope (9) is fixedly connected to the bottoms of the neodymium magnet lifting blocks (8), the other ends of the traction ropes (9) penetrate through the air hole opening seat (6) and are respectively connected with air hole sealing covers (10) on two sides, the air hole sealing covers (10) are movably installed on a pin shaft seat (11) through pin shafts, and reset springs are arranged in the pin shafts;
the underground centralized cooling crane (2) comprises a shell (12), a pair of rubber wheels (13) is movably arranged on two sides of the shell (12) respectively, wheel shafts of the rubber wheels (13) are fixedly connected with a driving shaft of a stepping motor (33), the stepping motor (33) is fixedly arranged on the shell (12), the rubber wheels (13) on two sides are movably arranged in rubber wheel grooves (4) on two sides of a cooling ventilating duct hanging rack (3), an electromagnet (14) matched with a neodymium magnet lifting block (8) is arranged in the shell (12), the electromagnet (14) and the neodymium magnet lifting block (8) are oppositely arranged in the same pole, a prying connecting rod (15) is fixedly arranged at the bottom of the electromagnet (14), the prying connecting rod (15) is movably inserted on a connecting rod seat (16), an extruding spring (17) is fixedly arranged at the bottom of the electromagnet (14), one end of the extruding spring (17) far away from the connecting rod seat (14) is fixedly connected with the electromagnet (16), prying connecting rod (15) bottom activity is provided with a pair of prying board (18), prying connecting rod (15) one side and sealed cowling (19) swing joint are kept away from to prying board (18), sealed cowling (19) bottom is connected with telescopic tube (20), still fixed mounting has shrink spring (21) sealed cowling (19) bottom, shrink spring (21) are kept away from sealed cowling (19) one end fixed connection and are in casing (12) inner wall, both sides sealed cowling (19) are through bellows (22) and air chamber (23) intercommunication.
2. The intelligent centralized monitoring system for mine downhole cooling according to claim 1, characterized in that: and a temperature sensor (24), an infrared monitoring probe (25) and a gas detection probe (26) are fixedly mounted at the bottom of the shell (12).
3. The intelligent centralized monitoring system for mine downhole cooling according to claim 1, characterized in that: the upper part of the cooling ventilating duct rack (3) is fixedly connected to the top of the working surface through a damping bracket (27).
4. The intelligent centralized monitoring system for mine downhole cooling according to claim 1, characterized in that: casing (12) still install cooperation rubber tyer (28) respectively along cooling air pipe hanger (3) advancing direction both sides, cooperation rubber tyer (28) activity is supported and is leaned on in cooling air pipe hanger (3) bottom.
5. The intelligent centralized monitoring system for mine downhole cooling according to claim 1, characterized in that: bellows (22) and outlet duct (29) intercommunication in air chamber (23), outlet duct (29) bottom and cooling ventilation pipe (30) intercommunication, be provided with one-way air outlet valve in cooling ventilation pipe (30), bellows (22) one end and gas purification box (31) intercommunication are kept away from in outlet duct (29), gas purification box (31) are kept away from air inlet (32) intercommunication that outlet duct (29) one end and air chamber (23) were seted up, outlet duct (29) are close to gas purification box (31) one end and install one-way admission valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010530566.0A CN111622798B (en) | 2020-06-11 | 2020-06-11 | Intelligent centralized monitoring system for mine underground cooling |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010530566.0A CN111622798B (en) | 2020-06-11 | 2020-06-11 | Intelligent centralized monitoring system for mine underground cooling |
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| CN111622798B true CN111622798B (en) | 2021-07-20 |
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| CN113602949B (en) * | 2021-10-11 | 2021-12-14 | 新乡市恒德机电有限公司 | Precision part lifting, transferring and conveying device and lifting, transferring and conveying method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2307224Y (en) * | 1997-09-10 | 1999-02-10 | 潘敬成 | Electric ventilator |
| JP4284599B2 (en) * | 2003-07-22 | 2009-06-24 | 株式会社三井三池製作所 | Operation device for suspended tunnel ventilator |
| CN201013400Y (en) * | 2007-02-15 | 2008-01-30 | 李海洋 | Hanging type blast column |
| SE532614C2 (en) * | 2008-05-22 | 2010-03-02 | Lars-Ingvar Nordstroem | Tub of PVC reinforced PVC |
| CN102808640A (en) * | 2011-05-30 | 2012-12-05 | 陈美红 | Fan |
| CN202228079U (en) * | 2011-09-15 | 2012-05-23 | 中煤科工集团重庆研究院 | Vehicle-mounted dust controlling and removing integrated device and system for machine digging face |
| CN204591353U (en) * | 2015-05-07 | 2015-08-26 | 山西兰花科技创业股份有限公司 | Oval clip Wind tunnel sensor |
| CN204572183U (en) * | 2015-05-12 | 2015-08-19 | 广西玉柴机器股份有限公司 | A kind of suction valve for intercooler |
| CN105525939B (en) * | 2016-01-20 | 2017-10-10 | 中国矿业大学 | A kind of roadway head dry filter dust pelletizing system |
| CN108331607B (en) * | 2018-03-23 | 2024-01-16 | 中国矿业大学 | Mine ventilation dust fall automatic control device |
| CN110043303B (en) * | 2019-03-26 | 2021-04-06 | 淮北矿业股份有限公司 | Movable dust removal fan is dug to rock gangway fully |
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