CN109209471A - Device for reducing dust is used in a kind of construction of method of tunnel drilling and blasting - Google Patents
Device for reducing dust is used in a kind of construction of method of tunnel drilling and blasting Download PDFInfo
- Publication number
- CN109209471A CN109209471A CN201811341180.4A CN201811341180A CN109209471A CN 109209471 A CN109209471 A CN 109209471A CN 201811341180 A CN201811341180 A CN 201811341180A CN 109209471 A CN109209471 A CN 109209471A
- Authority
- CN
- China
- Prior art keywords
- dust
- brace
- cylinder
- stop sleeve
- car body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21F5/02—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying
- E21F5/04—Spraying barriers
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/006—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries by making use of blasting methods
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
Abstract
The invention discloses a kind of method of tunnel drilling and blasting construction device for reducing dust, its car body is equipped with dust pelletizing system, dust pelletizing system includes motor, the right end axis connection of output shaft and dust the sucking cylinder of motor, the left port that dust sucks cylinder is dust suction inlet, the left end of dust sucking cylinder is fixedly connected with one end of brace, and brace is equipped with blade；Stop sleeve is arranged in the middle part of dust sucking cylinder, first annular slot is offered in stop sleeve, multiple dust-absorbing airflow via holes are offered on the dust sucking cylinder side wall of first annular slot position, first annular slot is connected by dust suction delivery pipe with dust collection equipment, dust collection equipment is electrically connected to a power source by dust suction control switch, and motor is electrically connected to a power source by motor control switch.Apparatus of the present invention can generate uniform and stronger negative-pressure sucking in its suction inlet, can greatly improve dust collection efficiency.
Description
Technical field
The present invention relates to constructing tunnel dust removal field, in particular to device for reducing dust is used in a kind of method of tunnel drilling and blasting construction.
Background technique
Drilling and blasting method has the characteristics that flexibly, quickly and efficiently because of it, it has also become the main method of constructing tunnel, however, boring
Quick-fried method can generate a large amount of dust and blasting fume in constructing tunnel, since tunnel is a relatively closed space, dust and big gun
Cigarette can have an adverse effect to the health of construction personnel, it is therefore desirable at the dust and blasting fume progress depositing dust in tunnel
Reason.
Currently, Tunnel Construction Ventilation System generally uses wet dust collection technology or dry and wet dedusting technology, wet dust collection technology
It mainly include spray sprinkler, water curtain dust fall etc.；For dry and wet dedusting technology, dust suction dust filtering usually is taken to the air containing dust
Method, generally use the umbrella suction side connecting with cleaner and the air containing dust sucked, then pass through dedusting
Equipment is dusted processing.Referring to fig. 2, current umbrella suction side is mainly a taper suction inlet 19, the taper suction inlet
Wide mouth part is used for air of the inspiration with dust, and the slot end of taper suction inlet connects cleaner by transfer pipeline, due to umbrella
Shape suction side is pyramidal structure, therefore leads to the negative pressure gas only generated in the space that front is rectified at its slot end and slot
Stream 20 is most strong, and is located at the negative suction generated at the space and wide mouth part of the close conical inner side wall of pyramidal structure relatively
It is weak, cause the dynamics of these place sucking dust to weaken significantly, so that dust suction efficiency is reduced, further, since umbrella is inhaled
The tapered sidewalls for entering end will be isolated inside umbrella suction side with the space on the outside of tapered sidewalls, so that the sky on the outside of tapered sidewalls
Between in dust can not also be inhaled into taper suction inlet.
Summary of the invention
The purpose of the present invention is overcoming above-mentioned problems of the prior art, a kind of method of tunnel drilling and blasting construction drop is provided
Dirt device can generate uniform and stronger negative-pressure sucking in its suction inlet, can greatly improve dust collection efficiency.
The technical scheme is that a kind of method of tunnel drilling and blasting construction device for reducing dust, including car body, car body include power
System, car body are equipped with dust pelletizing system, and the dust pelletizing system includes the motor set on headstock one end of car body, the output shaft of motor
With the right end axis connection of dust sucking cylinder, wherein the left port of dust sucking cylinder is dust suction inlet, and dust sucks the right end of cylinder
The left end of mouth closing, dust sucking cylinder is also fixedly connected with one end of brace, and dust is located on brace outer wall and sucks cylinder central axis
Line side is equipped with blade, and the blade is used to that dust will to be located near brace when brace sucks cylinder center axis thereof around dust
The band dust air propeller of cylinder central axis side is sucked to dust suction inlet direction；Branch is arranged in the middle part of the dust sucking cylinder
Support set cylinder, stop sleeve are fixed on car body by support base, and the around stop sleeve inner sidewall is offered in stop sleeve
One annular groove, the dust of the first annular slot position suck on cylinder side wall and are also provided with multiple dust-absorbing airflow via holes,
The first annular slot is connected with the dust suction output channel being opened in stop sleeve side wall, and dust suction output channel passes through dust suction
Delivery pipe is connected with the dust collection equipment being fixed on car body, and the dust collection equipment is by dust suction control switch and is set on car body
Power electric connection, the motor passes through motor control switch and the power electric connection.
It is slidably and sealingly connected between above-mentioned dust sucking cylinder and stop sleeve by sealing rubber ring, dust sucking cylinder is made to exist
Dust will not be gone out along the gap leakage that dust sucks between cylinder and stop sleeve when rotation in stop sleeve.
The quantity of above-mentioned blade is multiple, and along the genesis analysis of the brace, the area of each blade suspends end from brace
It is sequentially reduced to the one end of brace being connect with dust sucking cylinder.
The quantity of above-mentioned brace is multiple, and is uniformly distributed along the circumferential direction of dust sucking cylinder.
The quantity of above-mentioned brace is 3, and 3 blades are equipped on each brace.
Angle between the face where each blade on above-mentioned every brace and the center line of the brace is 30 degree of -60 degree.
Above-mentioned each brace is equipped with multiple hydraulic spray nozzles along its longitudinal direction, multiple hydraulic spray nozzle is set to brace and dust
It sucks on the outer wall of the opposite side of cylinder central axis, and offers the water transport channel being connected with each hydraulic spray nozzle in brace, institute
It states water transport channel to be also connected with the water delivery connecting tube being arranged in dust sucking cylinder, water delivery connecting tube is sucked with dust is opened in
Water hole on cylinder side wall is connected, the second annular of water hole and the circular stop sleeve inner sidewall being opened in stop sleeve
Slot connection, the second annular groove are connected by water-supply-pipe with the delivery equipment being fixed on car body, and delivery equipment is opened by water delivery
It closes and the power electric connection.
Above-mentioned dust collection equipment includes shell, the dust storage tank for being equipped with dust catcher in the shell and being connected with dust catcher,
Wherein dust catcher is connected with the dust suction delivery pipe, and dust catcher is electrically connected with dust suction control switch；The delivery equipment includes
Shell, the interior water tank for being equipped with high-pressure hydraulic pump and connecting with high-pressure hydraulic pump of the shell, wherein high-pressure hydraulic pump and the water delivery
Pipe is connected, and high-pressure hydraulic pump is electrically connected with water delivery switch.
Above-mentioned stop sleeve is mutually fixed with mat, the mat for accommodate the brace and by brace around
The center axis thereof of the dust sucking cylinder is formed by taper track；It is additionally provided on the car body for detecting powder in air
The dust concentration detection device of dust concentration.
Bearing is equipped between above-mentioned dust sucking cylinder and stop sleeve；The car body is equipped with control panel, the motor
Control switch, dust suction control switch and water delivery switch are set on control panel.
The present invention provides a kind of method of tunnel drilling and blasting construction device for reducing dust, generate negative suction in dust suction inlet 4-1
While carrying out the air of suction belts dust, a taper suction inlet, while brace 5 can be generated by high-speed rotating brace 5
Brace 5 can be also nearby located at the band of dust sucking 4 central axis side of cylinder while brace rotates by upper set blade 6
Dust air propeller is to the direction dust suction inlet 4-1, so that the negative suction overcome in taper suction inlet internal circumferential space is thin
Weak defect, while the band dust air in 5 outside of brace of taper suction inlet can also be made to be also drawn into dust suction inlet 4-1
In；Apparatus of the present invention can generate more uniform and stronger negative-pressure sucking in its taper suction inlet, can greatly improve
Dust collection efficiency.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the umbrella suction side structural schematic diagram of the prior art.
Specific embodiment
With reference to the accompanying drawing, the specific embodiment of the present invention is described in detail, it is to be understood that of the invention
Protection scope be not limited by the specific implementation.
Referring to such as Fig. 1, the present invention provides a kind of method of tunnel drilling and blasting construction device for reducing dust, including car body 1, car body 1 is wrapped
Dynamical system 2 is included, car body 1 is equipped with dust pelletizing system, and the dust pelletizing system includes the motor 3 set on headstock one end of car body 1, electricity
The right end axis connection of output shaft and dust the sucking cylinder 4 of machine 3, wherein the left port of dust sucking cylinder 4 is dust suction inlet 4-1,
Dust sucks the right output port closing of cylinder 4, and the left end of dust sucking cylinder 4 is also fixedly connected with one end of brace 5, on 5 outer wall of brace
It is equipped with blade 6 positioned at dust sucking 4 central axis side of cylinder, the blade 6 is used to suck 4 central axis of cylinder around dust in brace 5
Brace 5 is nearby located at the band dust air propeller of dust sucking 4 central axis side of cylinder to the dust suction inlet side 4-1 when line rotates
To；The middle part of the dust sucking cylinder 4 is arranged with stop sleeve 8, and stop sleeve 8 is fixed on car body 1 by support base 11, props up
The first annular slot 10 around 8 inner sidewall of stop sleeve is offered in support set cylinder 8, first annular 10 position of slot
Is also provided with multiple dust-absorbing airflow via holes 9 on dust sucking 4 side wall of cylinder, the first annular slot 10 be opened in stop sleeve 8
Dust suction output channel 23 in side wall is connected, and dust suction output channel 23 is by dust suction delivery pipe 13 and is fixed on car body 1
Dust collection equipment 12 is connected, and the dust collection equipment 12 is described by dust suction control switch and the power electric connection on car body 1
Motor 3 passes through motor control switch and the power electric connection.
Further, it is slidably and sealingly connected with, is made by sealing rubber ring between the dust sucking cylinder 4 and stop sleeve 8
Dust sucks cylinder 4 and will not let out dust along the gap that dust sucks between cylinder 4 and stop sleeve 8 when rotating in stop sleeve 8
Exposing is gone.
Further, the quantity of the blade 6 is multiple, and along the genesis analysis of the brace 5, the area of each blade 6
The one end connecting with dust sucking cylinder 4 for suspending end to brace 5 from brace 5 is sequentially reduced.
Further, the quantity of the brace 5 is multiple, and is uniformly distributed along the circumferential direction of dust sucking cylinder 4.
Further, the quantity of the brace 5 is 3, and 3 blades 6 are equipped on each brace 5.
Further, the angle between the face where each blade 6 on every brace 5 and the center line of the brace 5 is 30
- 60 degree of degree.
Further, each brace 5 is equipped with multiple hydraulic spray nozzles 7 along its longitudinal direction, and multiple hydraulic spray nozzle 7 is set to brace
5 on the outer wall of the opposite side of dust sucking 4 central axis of cylinder, and offer in brace 5 and be connected with each hydraulic spray nozzle 7
Water transport channel, the water transport channel also be arranged in dust sucking cylinder 4 in water delivery connecting tube be connected, water delivery connecting tube with open
Water hole on dust sucking 4 side wall of cylinder is connected, water hole and the circular stop sleeve 8 being opened in stop sleeve 8
Second annular groove of inner sidewall is connected to, and the second annular groove is connected by water-supply-pipe 15 with the delivery equipment 14 being fixed on car body 1
It connects, delivery equipment 14 passes through water delivery switch and the power electric connection.
Further, the dust collection equipment 12 includes shell, is equipped with dust catcher 12-1 and and dust catcher in the shell
The dust storage tank 12-2 that 12-1 is connected, wherein dust catcher 12-1 is connected with the dust suction delivery pipe 13, dust catcher 12-1 and suction
The electrical connection of dirt control switch；The delivery equipment 14 includes shell, is equipped with high-pressure hydraulic pump 14-1 and and high pressure in the shell
The water tank 14-2 that water pump 14-1 connects, wherein high-pressure hydraulic pump 14-1 is connected with the water-supply-pipe 15, high-pressure hydraulic pump 14-1 with
Water delivery switch electrical connection.
Further, the stop sleeve 8 is fixed with 17 phase of mat, and the mat 17 is described oblique for accommodating
Bar 5 and by brace 5 around the dust sucking cylinder 4 center axis thereof be formed by taper track；It is also set on the car body 1
There is the dust concentration detection device 21 for detecting dust in air concentration.
Further, bearing 22 is equipped between the dust sucking cylinder 4 and stop sleeve 8；The car body 1 is equipped with control
Panel 16, the motor control switch, dust suction control switch and water delivery switch are set on control panel 16.
Experiment effect of the invention: device for reducing dust of the invention device for reducing dust similar to the prior art depositing dust effect has been subjected to
Fruit comparison, wherein in the operating power consumption of device for reducing dust of the invention, the dust suction horn mouth size being rotated by brace, test environment
Dust initial concentration and the dust suction time filled with the prior art with the similar depositing dust of fixation horn mouth as shown in Figure 2
These indexs set are identical, are found through experiments that, dust suction amount of the invention (quality of inhaled dust) is higher than prior-art devices
38-53% out, wherein it is 3 that optimum structure of the invention, which is the blade optimal number gathered around there are three brace and on each brace,
A, when the number of blade on brace number and each brace is more than 3 or less than 3, pick-up performance can be than 3 at present
Drop.When dust concentration is lower in environment, pick-up performance of the invention is significantly higher than the similar device for reducing dust of the prior art, in phase
With in the testing time, dust suction amount highest is higher by 53% than prior art device for reducing dust.
In conclusion a kind of method of tunnel drilling and blasting construction device for reducing dust provided by the invention, produces in its dust suction inlet 4-1
While raw negative suction carries out the air of suction belts dust, a taper suction inlet can be generated by high-speed rotating brace 5,
Brace 5 can be also nearby located at dust and suck 4 central axis of cylinder by blade 6 set on brace 5 while brace rotates simultaneously
The band dust air propeller of side is to the direction dust suction inlet 4-1, to overcome the suction in taper suction inlet internal circumferential space
Enter the defect of negative pressure weakness, while the band dust air in 5 outside of brace of taper suction inlet can also be made to be also drawn into dust
In suction inlet 4-1；Apparatus of the present invention can generate more uniform and stronger negative-pressure sucking, Neng Gouji in its taper suction inlet
Big raising dust collection efficiency.
Disclosed above is only several specific embodiments of the invention, and still, the embodiment of the present invention is not limited to this, is appointed
What what those skilled in the art can think variation should all fall into protection scope of the present invention.
Claims (10)
1. a kind of method of tunnel drilling and blasting construction device for reducing dust, including car body (1), car body (1) they include dynamical system (2), car body (1)
It is equipped with dust pelletizing system, which is characterized in that the dust pelletizing system includes the motor (3) set on the headstock one end of car body (1), motor
(3) the right end axis connection of output shaft and dust sucking cylinder (4), wherein the left port of dust sucking cylinder (4) is dust suction inlet
(4-1), dust suck the right output port closing of cylinder (4), and the left end of dust sucking cylinder (4) is also fixedly connected with one end of brace (5),
It is located at dust sucking cylinder (4) central axis side on brace (5) outer wall and is equipped with blade (6), the blade (6) is used in brace
(5) brace (5) is nearby located to dust sucking cylinder (4) central axis side when sucking cylinder (4) center axis thereof around dust
Band dust air propeller is to the direction dust suction inlet (4-1)；It is arranged with stop sleeve (8), props up in the middle part of dust sucking cylinder (4)
Support set cylinder (8) is fixed on car body (1) by support base (11), is offered on the inside of stop sleeve (8) in stop sleeve (8)
The first annular slot (10) of wall, the dust of first annular slot (10) position, which sucks on cylinder (4) side wall, to be also provided with
Multiple dust-absorbing airflow via holes (9), the first annular slot (10) and the dust suction output channel being opened in stop sleeve (8) side wall
(23) it is connected, dust suction output channel (23) passes through dust suction delivery pipe (13) and the dust collection equipment (12) being fixed on car body (1)
It is connected, the dust collection equipment (12) passes through dust suction control switch and the power electric connection on car body (1), the motor
(3) pass through motor control switch and the power electric connection.
2. a kind of method of tunnel drilling and blasting construction device for reducing dust as described in claim 1, which is characterized in that the dust sucks cylinder
(4) it is slidably and sealingly connected between stop sleeve (8) by sealing rubber ring, makes dust sucking cylinder (4) in stop sleeve (8)
Gap leakage of the dust between dust sucking cylinder (4) and stop sleeve (8) will not be gone out when rotation.
3. a kind of method of tunnel drilling and blasting construction device for reducing dust as described in claim 1, which is characterized in that the blade (6)
Quantity is multiple, and the genesis analysis along the brace (5), the area of each blade (6) suspend end to brace (5) from brace (5)
Be sequentially reduced with dust sucking cylinder (4) one end for connecting.
4. a kind of method of tunnel drilling and blasting construction device for reducing dust as claimed in claim 3, which is characterized in that the brace (5)
Quantity is multiple, and is uniformly distributed along the circumferential direction of dust sucking cylinder (4).
5. a kind of method of tunnel drilling and blasting construction device for reducing dust as claimed in claim 4, which is characterized in that the brace (5)
Quantity is 3, and 3 blades (6) are equipped on each brace (5).
6. a kind of method of tunnel drilling and blasting construction device for reducing dust as claimed in claim 5, which is characterized in that on every brace (5)
Each blade (6) where face and the brace (5) center line between angle be 30 degree -60 degree.
7. a kind of method of tunnel drilling and blasting construction device for reducing dust as claimed in claim 4, which is characterized in that each brace (5) is along it
Longitudinal direction is equipped with multiple hydraulic spray nozzles (7), and multiple hydraulic spray nozzle (7) sucks cylinder (4) center with dust set on brace (5)
On the outer wall of the opposite side of axis, and the water transport channel being connected with each hydraulic spray nozzle (7) is offered in brace (5), it is described defeated
Aquaporin is also connected with the water delivery connecting tube being arranged in dust sucking cylinder (4), and water delivery connecting tube is sucked with dust is opened in
Water hole on cylinder (4) side wall is connected, water hole and circular stop sleeve (8) inner sidewall being opened in stop sleeve (8)
The connection of the second annular groove, the second annular groove is connected by water-supply-pipe (15) with the delivery equipment (14) being fixed on car body (1)
It connects, delivery equipment (14) passes through water delivery switch and the power electric connection.
8. a kind of method of tunnel drilling and blasting construction device for reducing dust as claimed in claim 7, which is characterized in that the dust collection equipment
It (12) include shell, equipped with dust catcher (12-1) and the dust storage tank (12- being connected with dust catcher (12-1) in the shell
2), wherein dust catcher (12-1) is connected with the dust suction delivery pipe (13), and dust catcher (12-1) is electrically connected with dust suction control switch
It connects；The delivery equipment (14) includes shell, be equipped in the shell high-pressure hydraulic pump (14-1) and with high-pressure hydraulic pump (14-1)
The water tank (14-2) to connect, wherein high-pressure hydraulic pump (14-1) is connected with the water-supply-pipe (15), high-pressure hydraulic pump (14-1) with
Water delivery switch electrical connection.
9. a kind of method of tunnel drilling and blasting construction device for reducing dust as described in claim 1, which is characterized in that the stop sleeve
(8) it is mutually fixed with mat (17), the mat (17) is for accommodating the brace (5) and by brace (5) around institute
The center axis thereof for stating dust sucking cylinder (4) is formed by taper track；It is additionally provided on the car body (1) for detecting air
The dust concentration detection device (21) of middle dust concentration.
10. a kind of method of tunnel drilling and blasting construction device for reducing dust as described in claim 1, which is characterized in that the dust sucking
Bearing (22) are equipped between cylinder (4) and stop sleeve (8)；The car body (1) is equipped with control panel (16), the motor control
Switch, dust suction control switch and water delivery switch are set on control panel (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811341180.4A CN109209471B (en) | 2018-11-12 | 2018-11-12 | Dust device is used in construction of tunnel drilling and blasting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811341180.4A CN109209471B (en) | 2018-11-12 | 2018-11-12 | Dust device is used in construction of tunnel drilling and blasting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109209471A true CN109209471A (en) | 2019-01-15 |
| CN109209471B CN109209471B (en) | 2020-02-07 |
Family
ID=64996306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811341180.4A Active CN109209471B (en) | 2018-11-12 | 2018-11-12 | Dust device is used in construction of tunnel drilling and blasting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109209471B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112145221A (en) * | 2020-09-22 | 2020-12-29 | 安徽理工大学 | Mine fog curtain-fan blade combined dust-settling device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107281862A (en) * | 2016-03-30 | 2017-10-24 | 中江县泰源建材有限公司 | A kind of dust exhaust apparatus |
| CN107398132A (en) * | 2017-09-08 | 2017-11-28 | 濮阳市鑫盛环保科技有限公司 | Energy-saving central cleaner |
| CN107837036A (en) * | 2017-11-30 | 2018-03-27 | 莱克电气股份有限公司 | Stick vacuums dirt cup filtration system and the stick vacuums using the filtration system |
| CN108180031A (en) * | 2017-12-27 | 2018-06-19 | 郑州格瑞塔电子信息技术有限公司 | A kind of dust suction depositing dust integrated device for mine |
-
2018
- 2018-11-12 CN CN201811341180.4A patent/CN109209471B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107281862A (en) * | 2016-03-30 | 2017-10-24 | 中江县泰源建材有限公司 | A kind of dust exhaust apparatus |
| CN107398132A (en) * | 2017-09-08 | 2017-11-28 | 濮阳市鑫盛环保科技有限公司 | Energy-saving central cleaner |
| CN107837036A (en) * | 2017-11-30 | 2018-03-27 | 莱克电气股份有限公司 | Stick vacuums dirt cup filtration system and the stick vacuums using the filtration system |
| CN108180031A (en) * | 2017-12-27 | 2018-06-19 | 郑州格瑞塔电子信息技术有限公司 | A kind of dust suction depositing dust integrated device for mine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112145221A (en) * | 2020-09-22 | 2020-12-29 | 安徽理工大学 | Mine fog curtain-fan blade combined dust-settling device |
| CN112145221B (en) * | 2020-09-22 | 2022-10-11 | 安徽理工大学 | Mine fog curtain-fan blade combined dust-settling device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109209471B (en) | 2020-02-07 |
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