CN207348893U - Headwork surface construction dust prevention system - Google Patents
Headwork surface construction dust prevention system Download PDFInfo
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- CN207348893U CN207348893U CN201721091662.XU CN201721091662U CN207348893U CN 207348893 U CN207348893 U CN 207348893U CN 201721091662 U CN201721091662 U CN 201721091662U CN 207348893 U CN207348893 U CN 207348893U
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- pipe
- water
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Abstract
It the utility model is related to a kind of headwork surface construction dust prevention system, including blasting sprayer, first of water curtain is provided with rear side of blasting sprayer, second water curtain is provided with rear side of first of water curtain, the distance between blasting sprayer and first water curtain are 30 50 meters, and the distance between first of water curtain and second water curtain are 30 50 meters.The beneficial effects of the utility model are：First of water curtain is provided with rear side of blasting sprayer, second water curtain is provided with rear side of first of water curtain, the distance between blasting sprayer and first water curtain are 30 50 meters, the distance between first of water curtain and second water curtain are 30 50 meters, dust is eliminated in dirt source place, prevents it from flying upward and into distinguished and admirable as far as possible.
Description
Technical field
It the utility model is related to a kind of dust prevention system, more particularly to a kind of headwork surface construction dust prevention system.
Background technology
The principle of headwork surface construction dust-proof working is to try to reduce dust occurrence quantity and floating dust amount, and dust is eliminated
Dirt source place, prevents it from flying upward and into distinguished and admirable as far as possible；The dust rapid subsidence for making to have swum at the same time is got off, and is collected
Come, remaining dust is diluted discharge ground with enough air quantity, but prevents from, because wind speed is excessive, making deposited dust again
Again fly upward.Need to install explosion spraying in the outer 8~10m that meets head on, since tunnel blasting impact force and breakdown strength are larger, make
Sense Full automatic timing explosion spraying system and two major class spraying device of acoustic control explosion automatic spraying system damage into automatically controlled sonar
It is bad frequent, bring unfavorable factor to Safety of Coal Mine Production.
Utility model content
Technical problem to be solved in the utility model is：A kind of headwork surface construction dust prevention system is provided, blows out spray
First of water curtain is provided with rear side of mist device, is provided with second water curtain on rear side of first of water curtain, blasting sprayer with
The distance between first water curtain is 30-50 meter, and the distance between first of water curtain and second water curtain are 30-50 meters, by powder
Dirt is eliminated in dirt source place, prevents it from flying upward and into distinguished and admirable as far as possible, and the first shut-off valve of blasting sprayer, second section
Only valve turns on corresponding high-pressure water pipe, on high-pressure air pipe, realizes auto spraying, easy to maintenance, low cost, even if tunnel blasting
Impact force and breakdown strength are larger, are not easy to cause the damage of automatic sprayer.
The utility model is to solve the problems, such as that used technical solution set forth above is：
A kind of headwork surface construction dust prevention system, including blasting sprayer 401, the rear side of blasting sprayer 401
Be provided with first of water curtain 402, the rear side of first of water curtain 402 is provided with second water curtain 403, blasting sprayer 401 with
The distance between first water curtain 402 is 30-50 meters, and the distance between first of water curtain 402 and second water curtain 403 are 30-
50 meters.
The blasting sprayer includes the first shut-off valve 21 being installed in high-pressure water pipe 20, installed in high-pressure air pipe
The second shut-off valve 23 on 22, the gas-vapor mix atomizer 25 being connected with high-pressure water pipe 20, high-pressure air pipe 22；Described first section
Only valve 21, the second shut-off valve 23 are press-down type shut-off valve, are further included including left trigger mechanism, right trigger mechanism and blasting impact
Baffle 24, the first shut-off valve connect left trigger mechanism, and the second shut-off valve connects right trigger mechanism, left trigger mechanism and right triggering machine
Blasting impact baffle 24 is installed, left trigger mechanism and right trigger mechanism structure identical include installing plate 1, are oriented to limit between structure
Position plate 2, pull rod 3, spacing head 4, resetting spring 5, curved bar 6, fixed pin 7, lock pin 8, extension spring 9, curved bar part 10,11 and of latch hook
Connecting rod 12, the left side of installing plate 1 are provided with vertical guide and limit plate 2, and the top of guide and limit plate 2 is offered wears for pull rod 3
The limit hole 13 crossed, pull rod 3 can horizontally slip along limit hole 13, and the right end of pull rod 3 is provided with spacing head 4,5 one end of resetting spring
Spacing head 4 is connected, 5 other end of resetting spring connection guide and limit plate 2, the bending part and installing plate 1 of curved bar part 10 are hinged, installation
Plate 1 is upper right to be fixed with fixed pin 7 and lock pin 8, and fixed pin 7 is located at the upper right side of 10 bending part of curved bar part, and lock pin 8 is located at fixed pin
7 lower right, 10 upper end of curved bar part connection extension spring 9, the other end of extension spring 9 is connected with fixed pin 7, under curved bar part 10
End is hinged with latch hook 11, and the latch hook 11 includes the arc coupler body 111 being hinged on fixed pin 7 and on arc coupler body 111
The gib head 112 at end, 112 lodge of gib head on the lock pin 8, consolidate by the upper end and the lower end of arc coupler body 111 of the connecting rod 12
Fixed connection, connecting rod 12 connect blasting impact baffle 24, and 10 upper end of curved bar part and the left end face of spacing head 4 offset, the first cut-off
Valve connects the pull rod 3 of left trigger mechanism, and the second shut-off valve connects the pull rod 3 of right trigger mechanism.
First shut-off valve 21,23 structure of the second shut-off valve are identical to include valve body 210, valve rod 211, spool 212, valve
Seat 213, valve body end cap 214 and sliding sleeve 215, the spool 212, valve seat 213 are located at what valve body 210 was formed with valve body end cap 214
In cavity, the spool 212 is connected with 211 one end of valve rod, and 211 other end of valve rod is connected with pull rod 3, the valve rod 211
The junction of valve body 210 is provided with sliding sleeve 215, valve rod 211 is slided in valve body 210 by sliding sleeve 215.
The curved bar part 10 includes the stock 101 being made into integration and quarter butt 102 and between the two formed with angle, the length
Bar 101 and 102 junction rounding off of quarter butt.
102 upper end of the quarter butt connection extension spring 9,101 lower end of stock is hinged with latch hook 11.
Angle between the stock 101 and quarter butt 102 is 90-150 degree.
First shut-off valve 21, the second shut-off valve 23 are separately fixed on corresponding installing plate 1
The blasting impact baffle is polyethylene blasting impact baffle 24.
First of water curtain is identical with second water curtain structure to release infrared sensing including main water supply pipe 301, heat
Device 1, heat release infrared sensor 2 303, Main Control Tank 304, ball valve 305 and water supply branch pipe 306, and heat releases infrared sensor one
302nd, heat is released infrared sensor 2 303 and is electrically connected with the signal input part of Main Control Tank 304, the signal of ball valve 305 and Main Control Tank 304
Output terminal is electrically connected, and water supply branch pipe 306 connects main water supply pipe 301, and ball valve 305, water supply branch pipe are provided with water supply branch pipe 306
Multiple simple type underground sprinkler dust fall structures, the multiple simple type underground sprinkler dust fall structure, along the confession are evenly equipped with 306
The length direction of water branch pipe 306, is arranged in order, and sets at equal intervals；The simple type underground sprinkler dust fall structure, including symmetrical point
The identical two spraying split of cloth, two spraying splits weld together, and the spraying split includes spraying 311 He of tube body
Water pipe head 312, spraying tube body 311 are tubular structure, 311 one end open of tube body of spraying, other end closing, the spraying
The openend welding water pipe head of tube body 311, the blind end of the spraying tube body 311 bend bend pipe 313 in the arc-shaped,
Strip v notch v 314 is offered on arc-shaped bend pipe 313.
The strip v notch v 314 is arranged on the middle part of the arc-shaped bend pipe 313 and arcuately direction arrangement, the strip
The length of v notch v 314 is more than half of the arc-shaped bend pipe 313.
The steel pipe that the spraying tube body 311 is Ф 15.
First water curtain is typically designed as normal spray function with second water curtain, when tunnel someone or car by when heat release it is infrared
Sensor has signal output to be uploaded to Main Control Tank, and Main Control Tank control electrical ball valve closes water curtain and stops watering, and people or car pass through later
Delay（Delay time can be adjusted arbitrarily）It is automatic to recover spraying state.
The operation principle of the utility model：It is provided with first of water curtain on rear side of blasting sprayer, first water curtain
Rear side is provided with second water curtain, and the distance between blasting sprayer and first water curtain are 30-50 meter, first of water curtain and
The distance between second water curtain is 30-50 meter, by dust elimination in dirt source place, prevents it from flying upward and into distinguished and admirable as far as possible
In, before explosion, the first shut-off valve, the second shut-off valve turn on corresponding high-pressure water pipe, on high-pressure air pipe, during explosion, explosion punching
Ripple is hit to promote blasting impact baffle backward, latch hook is rotated relative to curved bar part, and gib head of the lodge on lock pin departs from from lock pin,
Under the gravity of blasting impact baffle, curved bar part rotates clockwise, and the left end face of curved bar part upper end and spacing head offsets,
Mobile on the right side of spacing head case, the valve rod of pull rod pulling shut-off valve, spool, valve seat separation are driven, the first shut-off valve connects high pressure water
Logical, the second shut-off valve connects high pressure gas, and high pressure water, high pressure gas spray after being mixed in gas-vapor mix atomizer；Blow out police
To guard against after releasing, blasting impact baffle is above pushed away, lodge is on the lock pin again for gib head, curved bar part is counterclockwise spinning reduction,
Spacing head resets under action of reset spring to left movement, and spool, valve seat contact, stop spraying.
The beneficial effects of the utility model are：First of water curtain, first of water are provided with rear side of blasting sprayer
The rear side of curtain is provided with second water curtain, and the distance between blasting sprayer and first water curtain are 30-50 meters, first of water
The distance between curtain and second water curtain are 30-50 meters, and dust is eliminated in dirt source place, prevents it from flying upward and entering as far as possible
In distinguished and admirable.First shut-off valve, the second shut-off valve turn on corresponding high-pressure water pipe, on high-pressure air pipe, a switch control water route
And gas circuit, the first shut-off valve connects high pressure water, the second shut-off valve connects high pressure gas, and high pressure water, high pressure gas are in gas-vapor mix
Sprayed in atomizer after mixing, realize auto spraying, spray effect is more preferable, simple pure mechanic structure clever structure, and design is closed
Reason, easy to maintenance, low cost, even if tunnel blasting impact force and breakdown strength are larger, is not easy to cause automatic sprayer
Damage.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the structure diagram of blasting sprayer；
Fig. 3 is off the structure diagram of valve.
Fig. 4 is the structure diagram of water curtain；
Fig. 5 is simple type underground sprinkler dust fall structure schematic view of the mounting position；
Fig. 6 is the structure enlargement diagram of simple type underground sprinkler dust fall structure；
Fig. 7 is Section A-A schematic diagram in Fig. 6.
Wherein, 1- installing plates, 2- guide and limit plates, 3- pull rods, 4- spacing heads, 5- resetting springs, 6- curved bars, 7- are fixed
Pin, 8- lock pins, 9- extension springs, 10- curved bar parts, 11- latch hooks, 12- connecting rods, 13- limit holes, 20- high-pressure water pipes, 21- first
Shut-off valve, 22- high-pressure air pipes, the second shut-off valves of 23-, 24- blasting impact baffles, 25- gas-vapor mix atomizers, 101- long
Bar, 102- quarter butts, 111- arc coupler bodies, 112- gib heads, 210- valve bodies, 211- valve rods, 212- spools, 213- valve seats, 214- valves
Body end lid, 215- sliding sleeves, 301- main water supply pipes, 302- heat release infrared sensor one, and 303- heat releases infrared sensor two, 304-
Main Control Tank, 305- ball valves, 306- water supply branch pipes, 307- connectors, 311- spraying tube bodies, 312- water pipe heads, 313- circular arcs
Shape bend pipe, 314- strip v notch vs.
Embodiment
The embodiment of the utility model is further illustrated below in conjunction with the accompanying drawings.
With reference to Fig. 1-7, a kind of headwork surface construction dust prevention system described in present embodiment, including blasting spray
Device 401, the rear side of blasting sprayer 401 are provided with first of water curtain 402, and the rear side of first of water curtain 402 is provided with
The distance between two water curtains 403, blasting sprayer 401 and first water curtain 402 are 30-50 meter, first of water curtain 402 and
The distance between second water curtain 403 is 30-50 meters.
The blasting sprayer includes the first shut-off valve 21 being installed in high-pressure water pipe 20, installed in high-pressure air pipe
The second shut-off valve 23 on 22, the gas-vapor mix atomizer 25 being connected with high-pressure water pipe 20, high-pressure air pipe 22；Described first section
Only valve 21, the second shut-off valve 23 are press-down type shut-off valve, are further included including left trigger mechanism, right trigger mechanism and blasting impact
Baffle 24, the first shut-off valve connect left trigger mechanism, and the second shut-off valve connects right trigger mechanism, left trigger mechanism and right triggering machine
Blasting impact baffle 24 is installed, left trigger mechanism and right trigger mechanism structure identical include installing plate 1, are oriented to limit between structure
Position plate 2, pull rod 3, spacing head 4, resetting spring 5, curved bar 6, fixed pin 7, lock pin 8, extension spring 9, curved bar part 10,11 and of latch hook
Connecting rod 12, the left side of installing plate 1 are provided with vertical guide and limit plate 2, and the top of guide and limit plate 2 is offered wears for pull rod 3
The limit hole 13 crossed, pull rod 3 can horizontally slip along limit hole 13, and the right end of pull rod 3 is provided with spacing head 4,5 one end of resetting spring
Spacing head 4 is connected, 5 other end of resetting spring connection guide and limit plate 2, the bending part and installing plate 1 of curved bar part 10 are hinged, installation
Plate 1 is upper right to be fixed with fixed pin 7 and lock pin 8, and fixed pin 7 is located at the upper right side of 10 bending part of curved bar part, and lock pin 8 is located at fixed pin
7 lower right, 10 upper end of curved bar part connection extension spring 9, the other end of extension spring 9 is connected with fixed pin 7, under curved bar part 10
End is hinged with latch hook 11, and the latch hook 11 includes the arc coupler body 111 being hinged on fixed pin 7 and on arc coupler body 111
The gib head 112 at end, 112 lodge of gib head on the lock pin 8, consolidate by the upper end and the lower end of arc coupler body 111 of the connecting rod 12
Fixed connection, connecting rod 12 connect blasting impact baffle 24, and 10 upper end of curved bar part and the left end face of spacing head 4 offset, the first cut-off
Valve connects the pull rod 3 of left trigger mechanism, and the second shut-off valve connects the pull rod 3 of right trigger mechanism.
First shut-off valve 21,23 structure of the second shut-off valve are identical to include valve body 210, valve rod 211, spool 212, valve
Seat 213, valve body end cap 214 and sliding sleeve 215, the spool 212, valve seat 213 are located at what valve body 210 was formed with valve body end cap 214
In cavity, the spool 212 is connected with 211 one end of valve rod, and 211 other end of valve rod is connected with pull rod 3, the valve rod 211
The junction of valve body 210 is provided with sliding sleeve 215, valve rod 211 is slided in valve body 210 by sliding sleeve 215.
The curved bar part 10 includes the stock 101 being made into integration and quarter butt 102 and between the two formed with angle, the length
Bar 101 and 102 junction rounding off of quarter butt.
102 upper end of the quarter butt connection extension spring 9,101 lower end of stock is hinged with latch hook 11.
Angle between the stock 101 and quarter butt 102 is 90-150 degree.
First shut-off valve 21, the second shut-off valve 23 are separately fixed on corresponding installing plate 1
The blasting impact baffle is polyethylene blasting impact baffle 24.
First of water curtain is identical with second water curtain structure to release infrared sensing including main water supply pipe 301, heat
Device 1, heat release infrared sensor 2 303, Main Control Tank 304, ball valve 305 and water supply branch pipe 306, and heat releases infrared sensor one
302nd, heat is released infrared sensor 2 303 and is electrically connected with the signal input part of Main Control Tank 304, the signal of ball valve 305 and Main Control Tank 304
Output terminal is electrically connected, and water supply branch pipe 306 connects main water supply pipe 301, and ball valve 305, water supply branch pipe are provided with water supply branch pipe 306
Multiple simple type underground sprinkler dust fall structures, the multiple simple type underground sprinkler dust fall structure, along the confession are evenly equipped with 306
The length direction of water branch pipe 306, is arranged in order, and sets at equal intervals；The simple type underground sprinkler dust fall structure, including symmetrical point
The identical two spraying split of cloth, two spraying splits weld together, and the spraying split includes spraying 311 He of tube body
Water pipe head 312, spraying tube body 311 are tubular structure, 311 one end open of tube body of spraying, other end closing, the spraying
The openend welding water pipe head of tube body 311, the blind end of the spraying tube body 311 bend bend pipe 313 in the arc-shaped,
Strip v notch v 314 is offered on arc-shaped bend pipe 313.
The strip v notch v 314 is arranged on the middle part of the arc-shaped bend pipe 313 and arcuately direction arrangement, the strip
The length of v notch v 314 is more than half of the arc-shaped bend pipe 313.
The steel pipe that the spraying tube body 311 is Ф 15.
The operation principle of present embodiment：First of water curtain, first of water are provided with rear side of blasting sprayer
The rear side of curtain is provided with second water curtain, and the distance between blasting sprayer and first water curtain are 30-50 meters, first of water
The distance between curtain and second water curtain are 30-50 meters, and dust is eliminated in dirt source place, prevents it from flying upward and entering as far as possible
In distinguished and admirable, before explosion, the first shut-off valve, the second shut-off valve turn on corresponding high-pressure water pipe, on high-pressure air pipe, quick-fried during explosion
Broken shock wave promotes blasting impact baffle backward, and latch hook is rotated relative to curved bar part, and gib head of the lodge on lock pin is from lock pin
Depart from, under the gravity of blasting impact baffle, curved bar part rotates clockwise, the left end face of curved bar part upper end and spacing head
Offset, drive mobile on the right side of spacing head case, pull rod pulls the valve rod of shut-off valve, spool, valve seat separation, and the first shut-off valve is by high pressure
Water is connected, the second shut-off valve connects high pressure gas, and high pressure water, high pressure gas spray after being mixed in gas-vapor mix atomizer；Put
After big gun warning releases, blasting impact baffle is above pushed away, lodge is on the lock pin again for gib head, and rotation is multiple counterclockwise for curved bar part
Position, spacing head reset under action of reset spring to left movement, and spool, valve seat contact, stop spraying.
The beneficial effect of present embodiment is：It is provided with first of water curtain on rear side of blasting sprayer, first
It is provided with second water curtain on rear side of road water curtain, the distance between blasting sprayer and first water curtain are 30-50 meters, first
The distance between road water curtain and second water curtain are 30-50 meter, and dust is eliminated in dirt source place, prevent as far as possible its fly upward with
Into in distinguished and admirable.First shut-off valve, the second shut-off valve turn on corresponding high-pressure water pipe, on high-pressure air pipe, a switch control
Water route and gas circuit, the first shut-off valve connects high pressure water, the second shut-off valve connects high pressure gas, and high pressure water, high pressure gas are in aqueous vapor
Being sprayed in mixed aerosol nozzle after mixing, realize auto spraying, spray effect is more preferable, simple pure mechanic structure clever structure, if
Meter is reasonable, and easy to maintenance, low cost, even if tunnel blasting impact force and breakdown strength are larger, is not easy to cause auto spraying to fill
The damage put.
Specific embodiment of the utility model does not form the limitation to the utility model, every phase using the utility model
It is within the protection scope of the present utility model like structure and change.
Claims (3)
- A kind of 1. headwork surface construction dust prevention system, it is characterised in that：Including blasting sprayer（401）, blasting spray dress Put（401）Rear side be provided with first of water curtain（402）, first of water curtain（402）Rear side be provided with second water curtain （403）, blasting sprayer（401）With first of water curtain（402）The distance between be 30-50 meters, first of water curtain（402）With The distance between second water curtain (403) is 30-50 meters.
- A kind of 2. headwork surface construction dust prevention system as claimed in claim 1, it is characterised in that：The blasting spray dress Put including the first shut-off valve (21) in high-pressure water pipe (20), the second shut-off valve on high-pressure air pipe (22) (23), the gas-vapor mix atomizer (25) being connected with high-pressure water pipe (20), high-pressure air pipe (22)；First shut-off valve (21), the second shut-off valve (23) is press-down type shut-off valve, is further included including left trigger mechanism, right trigger mechanism and blasting impact Baffle 24, the first shut-off valve connect left trigger mechanism, and the second shut-off valve connects right trigger mechanism, left trigger mechanism and right triggering machine Blasting impact baffle (24) is installed, left trigger mechanism and right trigger mechanism structure identical include installing plate 1, are oriented between structure Limiting plate (2), pull rod (3), spacing head (4), resetting spring (5), curved bar (6), fixed pin (7), lock pin (8), extension spring (9), curved bar part (10), latch hook (11) and connecting rod (12), are provided with vertical guide and limit plate (2) on the left of installing plate (1), lead The limit hole (13) passed through for pull rod (3) is offered to the top of limiting plate (2), pull rod (3) can be sliding along limit hole (13) left and right Dynamic, the right end of pull rod (3) is provided with spacing head (4), and resetting spring (5) one end connects spacing head (4), and resetting spring (5) is another End connection guide and limit plate (2), the bending part of curved bar part (10) is hinged with installing plate (1), and installing plate (1) is upper right to be fixed with fixation Pin (7) and lock pin (8), fixed pin (7) are located at the upper right side of curved bar part (10) bending part, and lock pin (8) is located at the right side of fixed pin (7) Lower section, curved bar part (10) upper end connection extension spring (9), the other end of extension spring (9) are connected with fixed pin (7), curved bar part (10) lower end is hinged with latch hook (11), and the latch hook (11) includes the arc coupler body (111) being hinged on fixed pin (7) and is located at The gib head (112) of arc coupler body (111) upper end, gib head (112) lodge on the lock pin (8), the connecting rod (12) it is upper End be fixedly connected with the lower end of arc coupler body (111), connecting rod (12) connection blasting impact baffle (24), curved bar part (10) upper end and The left end face of spacing head (4) offsets, and the first shut-off valve connects the pull rod (3) of left trigger mechanism, and the connection of the second shut-off valve is right to touch Send out the pull rod (3) of mechanism.
- A kind of 3. headwork surface construction dust prevention system as claimed in claim 1, it is characterised in that：First of water curtain It is identical with second water curtain structure include main water supply pipe (301), heat releases infrared sensor one (302), heat releases infrared sensing Device two (303), Main Control Tank (304), ball valve (305) and water supply branch pipe (306), heat releases infrared sensor one (302), heat release it is infrared Sensor two (303) is electrically connected with the signal input part of Main Control Tank (304), the signal output of ball valve (305) and Main Control Tank (304) End is electrically connected, water supply branch pipe (306) connection main water supply pipe (301), is provided with ball valve (305) on water supply branch pipe (306), is supplied water Multiple simple type underground sprinkler dust fall structures, the multiple simple type underground sprinkler dust fall structure, edge are evenly equipped with branch pipe (306) The length direction of the water supply branch pipe (306), is arranged in order, sets at equal intervals；The simple type underground sprinkler dust fall structure, bag Symmetrical identical two spraying split is included, two spraying splits weld together, and the spraying split includes injection spray pipe Body (311) and water pipe head (312), spraying tube body (311) is tubular structure, tube body (311) one end open of spraying, separately One end is closed, the openend welding water pipe head of the spraying tube body (311), the blind end of the spraying tube body (311) Bend pipe in the arc-shaped (313) is bent, strip v notch v (314) is offered on arc-shaped bend pipe (313).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721091662.XU CN207348893U (en) | 2017-08-29 | 2017-08-29 | Headwork surface construction dust prevention system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721091662.XU CN207348893U (en) | 2017-08-29 | 2017-08-29 | Headwork surface construction dust prevention system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207348893U true CN207348893U (en) | 2018-05-11 |
Family
ID=62413101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721091662.XU Expired - Fee Related CN207348893U (en) | 2017-08-29 | 2017-08-29 | Headwork surface construction dust prevention system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207348893U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107338A (en) * | 2019-03-26 | 2019-08-09 | 淮北矿业股份有限公司 | A kind of dust-proof cascade of full-mechanized roadway pneumatic type |
| CN111804089A (en) * | 2020-05-18 | 2020-10-23 | 温州市瓯江引水发展有限公司 | Rapid tunnel dust removal system and rapid tunnel dust removal method |
| CN114100890A (en) * | 2021-11-08 | 2022-03-01 | 沪东中华造船(集团)有限公司 | Economical ship wharf-leaning water curtain system |
-
2017
- 2017-08-29 CN CN201721091662.XU patent/CN207348893U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107338A (en) * | 2019-03-26 | 2019-08-09 | 淮北矿业股份有限公司 | A kind of dust-proof cascade of full-mechanized roadway pneumatic type |
| CN110107338B (en) * | 2019-03-26 | 2021-01-12 | 淮北矿业股份有限公司 | Fully-mechanized roadway pneumatic dustproof water curtain |
| CN111804089A (en) * | 2020-05-18 | 2020-10-23 | 温州市瓯江引水发展有限公司 | Rapid tunnel dust removal system and rapid tunnel dust removal method |
| CN114100890A (en) * | 2021-11-08 | 2022-03-01 | 沪东中华造船(集团)有限公司 | Economical ship wharf-leaning water curtain system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180511 Termination date: 20200829 |