CN109162746B - Cold region rock tunnel construction is with dust extraction that flows with higher speed air - Google Patents
Cold region rock tunnel construction is with dust extraction that flows with higher speed air Download PDFInfo
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- CN109162746B CN109162746B CN201811179442.1A CN201811179442A CN109162746B CN 109162746 B CN109162746 B CN 109162746B CN 201811179442 A CN201811179442 A CN 201811179442A CN 109162746 B CN109162746 B CN 109162746B
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- dust
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- shell
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- 239000000428 dust Substances 0.000 title claims abstract description 70
- 239000011435 rock Substances 0.000 title claims abstract description 25
- 238000010276 construction Methods 0.000 title claims abstract description 12
- 238000000605 extraction Methods 0.000 title claims description 6
- 230000007246 mechanism Effects 0.000 claims abstract description 28
- 238000006243 chemical reaction Methods 0.000 claims abstract description 25
- 239000011964 heteropoly acid Substances 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 32
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 16
- 239000008236 heating water Substances 0.000 claims description 9
- 230000001133 acceleration Effects 0.000 claims description 8
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 36
- 239000000377 silicon dioxide Substances 0.000 abstract description 18
- 239000003054 catalyst Substances 0.000 abstract description 3
- 230000000151 anti-reflux effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- XPPKVPWEQAFLFU-UHFFFAOYSA-N diphosphoric acid Chemical compound OP(O)(=O)OP(O)(O)=O XPPKVPWEQAFLFU-UHFFFAOYSA-N 0.000 description 4
- 229940005657 pyrophosphoric acid Drugs 0.000 description 4
- 235000012239 silicon dioxide Nutrition 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 201000010001 Silicosis Diseases 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- 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
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/20—Drawing-off or depositing dust
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/50—Inorganic acids
- B01D2251/512—Phosphoric acid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/55—Compounds of silicon, phosphorus, germanium or arsenic
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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)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Biomedical Technology (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Silicon Compounds (AREA)
- Separation Of Particles Using Liquids (AREA)
Abstract
The invention discloses an accelerated air flow dust collection device for cold region rock tunnel construction, which structurally comprises a dust collection port, an accelerated air circulation host, a movable wheel, a dust collector and a water tank, wherein the dust collection port is embedded in the middle end of the front surface of the accelerated air circulation host; contain free silica in the collection air through arranging collection mechanism down to react free silica through the reaction box, generate the heteropoly acid, the heteropoly acid is a multi-functional novel catalyst, has improved use value, can also effectually avoid silica not inhaled by constructor, has ensured constructor's healthy.
Description
Technical Field
The invention relates to the field of tunnel construction equipment, in particular to a dust suction device capable of accelerating air flow.
Background
At the in-process that carries out cold district rock tunnel blasting, there are a lot of dusts, at this moment need adopt dust extraction to handle the dust, dust extraction for the tunnel construction at present has following drawback:
1. the in-process of blasting is being carried out in cold district rock tunnel, because the inside heat that loses for a long time of cold district rock, causes the inside temperature ratio external world in tunnel end, and the frost heaving takes place for the inside dust in tunnel, and dust extraction is difficult to inhale the dust.
2. Free silicon dioxide is contained in the rock, and dust suction device can not carry out further processing to free silicon dioxide, and free silicon dioxide's dust can be inhaled by constructor after the dust absorption, leads to constructor to arouse silicosis, harm constructor's health.
Disclosure of Invention
The technical scheme adopted by the invention for realizing the technical purpose is as follows: the accelerated air flow dust collection device for the cold region rock tunnel construction structurally comprises a dust collection port, an accelerated air circulation host, a movable wheel, a dust collector and a water tank, wherein the dust collection port is embedded in the middle end of the front surface of the accelerated air circulation host, the movable wheel is arranged at the lower end of the accelerated air circulation host, the accelerated air circulation host and the dust collector are of an integrated structure, the water tank is installed above the dust collector, the accelerated air circulation host comprises a host shell, a circulator, a knocking vibration acceleration mechanism, a lower row of collection mechanism, a reaction box, a phosphoric acid adding box, a heating water tank, a heteropoly acid collection box and a gas collection box, two circulators are arranged inside the host shell, the circulators are connected with the dust collector, the knocking vibration acceleration mechanism is provided with four groups and is fixedly installed at the upper end inside the host shell, the lower row of collection mechanism is connected with the dust collection port, the lower row of collection mechanism is fixedly installed at the middle end inside the host shell, the bottom of the lower row of collection mechanism is connected with the top of the reaction box, the reaction box is connected with the phosphoric acid adding box, the heating water box is fixedly installed at the bottom of the reaction box, the heteropoly acid collecting box is connected with the reaction box, the gas collecting boxes are provided with two gas collecting boxes which are connected with the top of the reaction box, the liquid inside the reaction box is phosphoric acid, and the phosphoric acid is dehydrated into pyrophosphoric acid when the heating water box heats to K-K.
Further, the circulation ware includes circulation ware shell, slip polished rod, fixed ring, one-way hinge, one-way switching board, the slip polished rod is equipped with two altogether and runs through both ends about circulation ware shell, slip polished rod fixed mounting is inside the host computer shell, fixed ring fixed mounting is inside circulation ware shell, one-way hinge is equipped with twelve altogether and evenly welds on fixed ring, one-way switching board is articulated mutually with fixed ring through one-way hinge, and two slip polished rods form an inclosed flow space, and circulation ware shell is the inlet opening wide, and the narrow structure in gas outlet can effectually arrange hot gas into, and air conditioning discharges.
Further, strike vibration acceleration mechanism and include the expansion hose, strike the ball, connect the pendulum rod, spacing articulated slab, expansion hose top fixed mounting is inside the host computer shell, the expansion hose bottom mounting is equipped with strikes the ball, strike ball fixed mounting at the connection pendulum rod head end, it is articulated mutually with spacing articulated slab to connect the pendulum rod end, spacing articulated slab fixed welding is inside the host computer shell, strike both ends about the ball locates the slip polished rod, and spacing articulated slab middle-end is equipped with the semi-annular groove, plays spacing effect through the swing of semi-annular groove to connecting the pendulum rod.
Furthermore, the lower row of collecting mechanisms comprises a dust collecting connecting pipe, a collecting plate, a sunken pipe, a one-way torsion spring and an anti-reflux baffle, the dust collecting connecting pipe is connected with a dust collecting port, the collecting plate is arranged at the middle end of the top of the dust collecting connecting pipe, the collecting plate is positioned right above the sunken pipe, the sunken pipe is arranged at the middle end of the bottom of the dust collecting connecting pipe, the one-way torsion spring is arranged at the bottom end of the sunken pipe, and the one-way torsion spring is movably connected with the anti-reflux baffle.
The invention has the beneficial effects that: the two circulators slide to accelerate the circulation of air inside the rock tunnel in the cold region and air outside the rock tunnel in the cold region, so that the temperature inside the rock tunnel in the cold region is increased, dust in the rock tunnel in the cold region is thawed, and the dust can be effectively sucked by the dust suction device; simultaneously inhale the dust through the dust absorption mouth, contain free silica in the collection air through lower row of collection mechanism to react free silica through the reaction box, generate many miscellaneous acid, collect through the heteropoly acid collecting box, many miscellaneous acid is a multi-functional novel catalyst, has improved use value, can also effectually avoid silica not inhaled by constructor, has ensured constructor's healthy.
Drawings
FIG. 1 is a schematic structural view of an air flow accelerating dust suction device for cold region rock tunnel construction.
FIG. 2 is a side sectional view of a host for accelerating air flow according to the present invention.
Figure 3 is a cross-sectional side view of a flow-through device of the present invention.
Fig. 4 is a structural view of an operating state of a flow-through device according to the present invention.
FIG. 5 is a partial cross-sectional elevation view of a flow-through apparatus of the present invention.
FIG. 6 is a schematic structural diagram of a knocking vibration acceleration mechanism according to the present invention.
Fig. 7 is a partial structural schematic view of a lower row of collecting mechanisms according to the present invention.
In the figure: a dust collection port-1, an accelerated air circulation host machine-2, a moving wheel-3, a dust collector-4, a water tank-5, a host machine shell-21, a circulator-22, a knocking vibration acceleration mechanism-23, a lower row collection mechanism-24, a reaction box-25, a phosphoric acid adding box-26, a heating water tank-27, a heteropoly acid collection box-28 and a gas collection box-29, a circulator shell-221, a sliding polished rod-222, a fixed ring-223, a one-way hinge-224, a one-way opening and closing plate-225, a telescopic hose-231, a knocking ball-232, a connecting swing rod-233, a limiting hinge plate-234, a dust collection connecting pipe-241, a collection plate-242, a sinking pipe-243, a one-way torsion spring-244 and an anti-reflux baffle-245.
Detailed Description
Examples
Referring to fig. 1-7, the accelerated air flow dust collector for rock tunnel construction in cold regions of the present invention comprises a dust collection port 1, an accelerated air circulation main unit 2, a moving wheel 3, a dust collector 4, and a water tank 5, wherein the dust collection port 1 is embedded in the middle of the front surface of the accelerated air circulation main unit 2, the moving wheel 3 is disposed at the lower end of the accelerated air circulation main unit 2, the accelerated air circulation main unit 2 and the dust collector 4 are integrated, the water tank 5 is disposed above the dust collector 4, the accelerated air circulation main unit 2 comprises a main unit housing 21, a circulator 22, a knocking vibration accelerating mechanism 23, a lower row collecting mechanism 24, a reaction box 25, a phosphoric acid adding box 26, a heating water tank 27, a heteropoly acid collecting box 28, and a gas collecting box 29, two circulators 22 are disposed inside the main unit housing 21, the circulator 22 is connected to the dust collector 4, the knocking vibration acceleration mechanism 23 is provided with four parts and fixedly installed at the upper end inside the main machine shell 21, the lower row of collection mechanism 24 is connected with the dust suction port 1, the lower row of collection mechanism 24 is fixedly installed at the middle end inside the main machine shell 21, the bottom end of the lower row of collection mechanism 24 is connected with the top end of the reaction box 25, the reaction box 25 is connected with the phosphoric acid adding box 26, the heating water box 27 is fixedly installed at the bottom end of the reaction box 25, the heteropoly acid collection box 28 is connected with the reaction box 25, the gas collection box 29 is provided with two parts and connected with the top end of the reaction box 25, the liquid inside the reaction box 25 is phosphoric acid, and the phosphoric acid is dehydrated into pyrophosphoric acid when being heated to 473K-.
Further, the circulator 22 includes a circulator casing 221, a sliding polish rod 222, a fixed ring 223, a one-way hinge 224, and a one-way opening and closing plate 225, the sliding polish rod 222 is provided with two and penetrates through the upper and lower ends of the circulator casing 221, the sliding polish rod 222 is fixedly installed inside the host casing 21, the fixed ring 223 is fixedly installed inside the circulator casing 221, the one-way hinge 224 is provided with twelve and is uniformly welded on the fixed ring 223, the one-way opening and closing plate 225 is hinged to the fixed ring 223 through the one-way hinge 224, the two sliding polish rods 222 form a closed flowing space, the circulator casing 221 has a wide air inlet and a narrow air outlet, and hot air and cold air can be effectively discharged.
Further, the knocking vibration accelerating mechanism 23 comprises a telescopic hose 231, a knocking ball 232, a connecting swing rod 233 and a limiting hinge plate 234, the top end of the telescopic hose 231 is fixedly installed inside the host shell 21, the bottom end of the telescopic hose 231 is fixedly provided with a knocking ball 232, the knocking ball 232 is fixedly installed at the head end of the connecting swing rod 233, the tail end of the connecting swing rod 233 is hinged to the limiting hinge plate 234, the limiting hinge plate 234 is fixedly welded inside the host shell 21, the knocking ball 232 is arranged at the upper end and the lower end of the sliding polish rod 222, a semi-annular groove is formed in the middle end of the limiting hinge plate 234, and the semi-annular groove plays a limiting role in limiting the swinging of the connecting swing.
Further, the lower-row collecting mechanism 24 includes a dust-collecting connecting pipe 241, a collecting plate 242, a sinking pipe 243, a one-way torsion spring 244 and a reverse flow preventing baffle 245, the dust-collecting connecting pipe 241 is connected with the dust-collecting opening 1, the collecting plate 242 is arranged at the middle end of the top of the dust-collecting connecting pipe 241, the collecting plate 242 is located right above the sinking pipe 243, the sinking pipe 243 is arranged at the middle end of the bottom of the dust-collecting connecting pipe 241, the one-way torsion spring 244 is arranged at the bottom end of the sinking pipe 243, and the one-way torsion spring 244 is movably connected with the reverse flow preventing baffle 245.
Referring to fig. 2, the phosphoric acid adding box 26 and the heteropoly acid collecting box 28 work simultaneously, phosphoric acid in the reaction box 25 is supplemented in time through the phosphoric acid adding box 26, and the reaction product heteropoly acid is discharged to the heteropoly acid collecting box 28 in time, so that enough phosphoric acid and silicon dioxide react in the dust collection process is ensured.
Referring to fig. 4, two circulators 22 are installed in opposite directions, and through the use of the one-way hinge 224 in cooperation with the one-way opening and closing plate 225, during the moving and compressing process of the circulator casing 221, the two opposite opening and closing plates 225 are in opposite directions, one discharges hot air and the other discharges cold air, and the temperature inside the rock tunnel in the cold region is rapidly increased.
Referring to fig. 5, the flexible hose 231 is of a corrugated structure, and can be stretched freely, so as to drive the ball striking ball 232 to strike the closed air circulation space to generate vibration, thereby improving the air circulation speed.
Referring to fig. 6, the collecting plate 242 is installed at an angle of 60 ° right above the sinking pipe 243, so that silica can be effectively blocked, the silica is collected into the sinking pipe 243, and the sinking pipe 243 has a structure with a wide top and a narrow bottom, so that the silica is prevented from flowing back.
The invention has the following use modes and functions: the accelerated air circulation host machine 2 is moved into the interior of the rock tunnel of the cold region through the moving wheel 3, at this time, the temperature in the interior of the rock tunnel of the cold region is lower, and frost heaving of dust can occur, firstly, the moving is carried out on the sliding polished rod 222 through the shell 221 of the circulator, the fixed circular ring 223 is driven to move, the unidirectional hinge 224 and the unidirectional opening and closing plate 225 are used in a matched mode, in the moving process, the unidirectional opening and closing plate 225 is opened and closed in a unidirectional mode, the installation directions of the two circulators 22 are opposite, the operation directions are opposite, external hot air can be pushed into the interior of the rock tunnel of the cold region through the unidirectional opening and closing plate 225, the cold air in the interior of the rock tunnel of the cold region is pushed out of the exterior through the unidirectional opening and closing plate 225, the temperature in the interior of the rock tunnel of the cold region is rapidly increased, and the automatic expansion and contraction, the flowing of air is accelerated, the temperature in the rock tunnel in the cold region is rapidly increased, and dust is unfrozen and can be effectively sucked; then the dust collector 4 is started, dust is sucked in through the dust suction port 1, enters the dust suction connecting pipe 241, silica in the dust is blocked through the collecting plate 242, the silica is higher in density than air and sinks to enter the sinking pipe 243, the anti-reflux baffle 245 is in a one-way downward opening state through the matching use of the one-way torsion spring 244 and the anti-reflux baffle 245, the silica is ensured not to flow back, phosphoric acid in the reaction box 25 is dehydrated into pyrophosphoric acid under the heat of the heating water tank 27, gas generated in the heating process is discharged into the gas collecting box 29, the silica then reacts with the pyrophosphoric acid, reaction products are polyhydracid, the polyhydracid is stored in the heteropoly acid collecting box 28, the polyhydracid is a multifunctional novel catalyst, the use value is improved, and the situation that the silica is not sucked by constructors can be effectively avoided, the health of constructors is guaranteed.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. The utility model provides a cold district rock tunnel construction is with accelerating air current dust extraction that flows, its structure includes dust absorption mouth (1), with higher speed circulation of air host computer (2), removes wheel (3), dust catcher (4), water tank (5), inlay in accelerating circulation of air host computer (2) front surface middle-end dust absorption mouth (1), it is equipped with removal wheel (3), its characterized in that to accelerate circulation of air host computer (2) lower extreme:
the accelerated air circulation host machine (2) and the dust collector (4) are of an integrated structure, and a water tank (5) is arranged above the dust collector (4);
the accelerated air circulation host (2) comprises a host shell (21), a circulator (22), a knocking vibration accelerating mechanism (23), a lower row collecting mechanism (24), a reaction box (25), a phosphoric acid adding box (26), a heating water tank (27), a heteropoly acid collecting box (28) and a gas collecting box (29);
host computer shell (21) is inside to be equipped with two circulation ware (22) altogether, circulation ware (22) are connected with dust catcher (4), strike vibration acceleration mechanism (23) and be equipped with four altogether and fixed mounting in the inside upper end of host computer shell (21), lower row of collection mechanism (24) is connected with dust absorption mouth (1), lower row of collection mechanism (24) fixed mounting is in the inside middle-end of host computer shell (21), lower row of collection mechanism (24) bottom is connected with reaction box (25) top, reaction box (25) are connected with phosphoric acid addition case (26), heating water tank (27) fixed mounting is in reaction box (25) bottom, heteropoly acid collecting box (28) are connected with reaction box (25), gas collection box (29) are equipped with two altogether and are connected with reaction box (25) top.
2. The accelerated air flow dust suction device for the cold region rock tunnel construction as claimed in claim 1, wherein: circulator (22) is including circulator shell (221), slip polished rod (222), fixed ring (223), one-way hinge (224), one-way switching board (225), slip polished rod (222) are equipped with two altogether and run through both ends about circulator shell (221), slip polished rod (222) fixed mounting is inside host computer shell (21), fixed ring (223) fixed mounting is inside circulator shell (221), one-way hinge (224) are equipped with twelve altogether and evenly weld on fixed ring (223), one-way switching board (225) are articulated mutually with fixed ring (223) through one-way hinge (224).
3. The accelerated air flow dust suction device for the cold region rock tunnel construction as claimed in claim 2, wherein: strike vibration acceleration mechanism (23) including flexible hose (231), strike ball (232), connection pendulum rod (233), spacing articulated slab (234), flexible hose (231) top fixed mounting is inside host computer shell (21), flexible hose (231) bottom mounting is equipped with strikes ball (232), strike ball (232) fixed mounting at connecting pendulum rod (233) head end, it is articulated mutually with spacing articulated slab (234) to connect pendulum rod (233) end, spacing articulated slab (234) fixed welding is inside host computer shell (21), strike ball (232) and locate sliding polish rod (222) upper and lower both ends.
4. The accelerated air flow dust suction device for the cold region rock tunnel construction as claimed in claim 1, wherein: the lower-row collecting mechanism (24) comprises a dust collecting connecting pipe (241), a collecting plate (242), a sinking pipe (243), a one-way torsion spring (244) and a backflow preventing baffle (245), the dust collecting connecting pipe (241) is connected with a dust collecting port (1), the collecting plate (242) is arranged at the middle end of the top of the dust collecting connecting pipe (241), the collecting plate (242) is located right above the sinking pipe (243), the sinking pipe (243) is arranged at the middle end of the bottom of the dust collecting connecting pipe (241), the one-way torsion spring (244) is arranged at the bottom end of the sinking pipe (243), and the one-way torsion spring (244) is movably connected with the backflow preventing baffle (245).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811179442.1A CN109162746B (en) | 2018-10-10 | 2018-10-10 | Cold region rock tunnel construction is with dust extraction that flows with higher speed air |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811179442.1A CN109162746B (en) | 2018-10-10 | 2018-10-10 | Cold region rock tunnel construction is with dust extraction that flows with higher speed air |
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| Publication Number | Publication Date |
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| CN109162746A CN109162746A (en) | 2019-01-08 |
| CN109162746B true CN109162746B (en) | 2020-04-17 |
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| CN201811179442.1A Active CN109162746B (en) | 2018-10-10 | 2018-10-10 | Cold region rock tunnel construction is with dust extraction that flows with higher speed air |
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| CN112696221B (en) * | 2020-12-28 | 2023-02-14 | 华北理工大学 | Well rescue drilling air pressurize ventilation equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2921290Y (en) * | 2006-07-21 | 2007-07-11 | 中铁十七局集团有限公司 | Moving air curtain type tunnel smoke-dispelling and dust removing device |
| CN204182661U (en) * | 2014-09-29 | 2015-03-04 | 石家庄富邦冶金科技有限公司 | Ash system inhaled by a kind of tunnel cave carborundum tank |
| CN204247009U (en) * | 2014-10-31 | 2015-04-08 | 浙江浙大海元环境科技有限公司 | A kind of sticky dust capturing device |
| CN108087015B (en) * | 2018-01-15 | 2019-03-08 | 中国矿业大学(北京) | The foam preparation facilities and dedusting technique for preventing and treating Tunnel Blasting dust |
| CN108286800B (en) * | 2018-01-17 | 2020-10-16 | 浙江蓝域智能科技有限公司 | Heating equipment for low-temperature condition tunnel construction |
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