CN107684794A - A kind of Environmental Cities construction is with removing haze big gun - Google Patents
A kind of Environmental Cities construction is with removing haze big gun Download PDFInfo
- Publication number
- CN107684794A CN107684794A CN201710901095.8A CN201710901095A CN107684794A CN 107684794 A CN107684794 A CN 107684794A CN 201710901095 A CN201710901095 A CN 201710901095A CN 107684794 A CN107684794 A CN 107684794A
- Authority
- CN
- China
- Prior art keywords
- storage tank
- big gun
- water
- filtering net
- blower fan
- 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.)
- Pending
Links
- 238000010276 construction Methods 0.000 title claims abstract description 14
- 230000007613 environmental effect Effects 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 57
- 238000003860 storage Methods 0.000 claims abstract description 41
- 239000000428 dust Substances 0.000 claims abstract description 29
- 239000012535 impurity Substances 0.000 claims abstract description 27
- 238000001914 filtration Methods 0.000 claims abstract description 22
- 238000004140 cleaning Methods 0.000 abstract description 6
- 239000007921 spray Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 230000002939 deleterious effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 102000001554 Hemoglobins Human genes 0.000 description 1
- 108010054147 Hemoglobins Proteins 0.000 description 1
- 235000007849 Lepidium sativum Nutrition 0.000 description 1
- 244000211187 Lepidium sativum Species 0.000 description 1
- 208000007502 anemia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
- B01D29/03—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements self-supporting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
- B01D35/027—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks rigidly mounted in or on tanks or reservoirs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
The invention discloses a kind of Environmental Cities construction with removing haze big gun,Including water inlet,The bottom of the water inlet is provided with storage tank,The preceding surface of the storage tank is provided with electronic flowmeter,The bottom side of the storage tank is provided with delivery port,The bottom of the storage tank is provided with diesel generating set,The side of the diesel generating set is provided with high-pressure hydraulic pump,Side of the high-pressure hydraulic pump away from diesel generating set is provided with water pump pipeline,Impurity filtering net can filter the fine impurities in water,Impurity can be avoided to block water-supply-pipe and atomizer,Impurity filtering net can be risen by putting receipts chain apparatus,With flexible chain buckle card and being connected,It can allow impurity filtering net is random to remove and install,Reduce the workload of cleaning impurity filtering net,Strength drifting dust blower fan and large-scale vacuum cleaner can effectively absorb the dust in roadside,Reduce harm of the dust to passerby,Make urban environment finer.
Description
Technical field
The invention belongs to except haze big gun technical field, and in particular to a kind of Environmental Cities construction is with removing haze big gun.
Background technology
Except haze big gun injection water fog particle it is extremely tiny, reach micron order, haze weather can carry out liquid mist depositing dust, point
Granule density in solution desalination air, pollution particulate matter in air, dust etc. can be effectively decomposed, effectively alleviate haze.Will drift
Float aerial pollution particulate matter and force drop ground rapidly, reach the effect of Cress air.The large-scale fog gun of car load
Sprayable 120 meters remote, 70 meters of high water smokes, compared to common sprinkling truck, in addition, same 10 tons of water, common sprinkling truck can only spray
10 minutes, and it is new except haze big gun can spray 1 hour, and area coverage substantially increases water resource utilization more than 30,000 square metres
Rate.Pm2.5 is a kind of pollutant common in air, and this pollutant can be combined with the hemoglobin in body, so as to shadow
Ring blood conveying, this is for the patient with anaemia and blood circulation disorder, it is possible to create serious consequence, for this in order to
Our health has to administer pm2.5.
Existing to remove haze big gun, during use, it is less obvious to go out dirt effect, only dust moistening and then heavy
Drop, after dust has been done or environment can be polluted, and except not having cleaning device inside the storage tank on haze big gun, will
After water introduces, if water quality is poor, deleterious effect can be caused to fog-spray nozzle and whole sprayer unit, can be reduced except haze if serious
The problem of service life of big gun is this it is proposed that a kind of Environmental Cities construction is with removing haze big gun.
The content of the invention
It is an object of the invention to provide a kind of Environmental Cities construction with haze big gun is removed, to solve to propose in above-mentioned background technology
Existing to remove haze big gun, during use, it is less obvious to go out dirt effect, only dust moistening and then settles, dust is done
After or environment can be polluted, and except not having cleaning device inside the storage tank on haze big gun, after introducing the water into,
If water quality is poor, deleterious effect can be caused to fog-spray nozzle and whole sprayer unit, can be reduced except the use of haze big gun if serious
The problem of life-span.
To achieve the above object, the present invention provides following technical scheme：A kind of Environmental Cities construction is with removing haze big gun, including enters
The mouth of a river, the bottom of the water inlet are provided with storage tank, and the preceding surface of the storage tank is provided with electronic flowmeter, the water storage
The bottom side of case is provided with delivery port, and the bottom of the storage tank is provided with diesel generating set, and the one of the diesel generating set
Side is provided with high-pressure hydraulic pump, and side of the high-pressure hydraulic pump away from diesel generating set is provided with water pump pipeline, the water pump pipe
Side of the road away from high-pressure hydraulic pump is provided with high-pressure plunger pump, and water-supply-pipe is provided with the top of the high-pressure plunger pump, described defeated
It is provided with the top of water pipe except haze machine, the bottom except haze machine is provided with except haze big gun machine bottom, described except the side at haze big gun machine bottom
Be provided with rotary shaft, the rotary shaft is provided with blower fan away from the side except haze big gun machine bottom, the blower fan away from rotary shaft one
Side is provided with wind-force guide shell, and the side of the wind-force guide shell away from blower fan is provided with atomizer, the water pump pipeline
Top is provided with strength drifting dust blower fan, and the side of the storage tank is provided with large-scale vacuum cleaner, and the inner side of the storage tank is set
There is impurity filtering net, flexible chain is provided with the top of the impurity filtering net, be provided with to put at the top of the flexible chain and receive chain dress
Put.
Preferably, the electronic flowmeter is fixedly connected by nut with storage tank.
Preferably, the impurity filtering net by buckle card and is connected with flexible chain.
Preferably, the strength drifting dust blower fan is provided with two altogether, and two strength drifting dust blower fans are separately mounted to water pump pipe
The top and bottom in road.
Preferably, the water pump pipeline is fixedly connected by nut with high-pressure hydraulic pump.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention is scientific and reasonable for structure, safe and convenient to use, miscellaneous
Matter screen pack can filter the fine impurities in water, and impurity can be avoided to block water-supply-pipe and atomizer, put receipts chain apparatus
Impurity filtering net can be risen, with flexible chain buckle card and being connected, can allow impurity filtering net is random to remove and install, reduce
The workload of cleaning impurity filtering net, strength drifting dust blower fan and large-scale vacuum cleaner can effectively absorb the dust in roadside, subtract
Harm of the dust to passerby is lacked, has made urban environment finer.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the front view structural representation of the present invention；
Fig. 3 is the storage tank structure schematic diagram of the present invention；
Fig. 4 is the impurity filtering net structural representation of the present invention；
Fig. 5 is the storage tank dimensional structure diagram of the present invention；
Fig. 6 is the storage tank cover structure schematic diagram of the present invention.
In figure：1- water inlets, 2- storage tanks, 3- electronic flowmeters, 4- diesel generating sets, 5- high-pressure hydraulic pumps, 6- water outlets
Mouth, 7- water pump pipelines, 8- high-pressure plunger pumps, 9- water-supply-pipes, 10- are except haze big gun machine bottom, 11- rotary shafts, 12- blower fans, 13- wind-force
Guide shell, 14- atomizers, 15- are except haze machine, 16- strength drifting dusts blower fan, the large-scale vacuum cleaners of 17-, 18- impurity filtering nets, 19-
Flexible chain, 20- put receipts chain apparatus.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Embodiment 1
Fig. 1, Fig. 2, Fig. 3 and Fig. 4 are referred to, the present invention provides a kind of technical scheme：A kind of Environmental Cities construction is with removing haze
Big gun, including water inlet 1, the bottom of water inlet 1 are provided with storage tank 2, and the preceding surface of storage tank 2 is provided with electronic flowmeter 3,
The bottom side of storage tank 2 is provided with delivery port 6, and the bottom of storage tank 2 is provided with diesel generating set 4, and the one of diesel generating set 4
Side is provided with high-pressure hydraulic pump 5, and side of the high-pressure hydraulic pump 5 away from diesel generating set 4 is provided with water pump pipeline 7, and water pump pipeline 7 is remote
Side from high-pressure hydraulic pump 5 is provided with high-pressure plunger pump 8, and the top of high-pressure plunger pump 8 is provided with water-supply-pipe 9, the top of water-supply-pipe 9
Portion is provided with except haze machine 15, except the bottom of haze machine 15 is provided with except haze big gun machine bottom 10, is turned except the side at haze big gun machine bottom 10 is provided with
Moving axis 11, rotary shaft 11 are provided with blower fan 12 away from the side except haze big gun machine bottom 10, and side of the blower fan 12 away from rotary shaft 11 is set
Wind-force guide shell 13 is equipped with, side of the wind-force guide shell 13 away from blower fan 12 is provided with atomizer 14, the top of water pump pipeline 7
Portion is provided with strength drifting dust blower fan 16, and the side of storage tank 2 is provided with large-scale vacuum cleaner 17, and the inner side of storage tank 2 is provided with miscellaneous
Matter screen pack 18, the top of impurity filtering net 18 are provided with flexible chain 19, and the top of flexible chain 19, which is provided with to put, receives chain apparatus 20.
In order that electronic flowmeter 3 does not come off easily on storage tank 2, in the present embodiment, it is preferred that electronic flowmeter 3
It is fixedly connected by nut with storage tank 2.
In order that flexible chain 19 is easy for removal and installation, in the present embodiment, it is preferred that impurity filtering net 18 and flexible chain
19 pass through buckle card and connection.
In order that drifting dust is more efficiently, in the present embodiment, it is preferred that strength drifting dust blower fan 16 is provided with two, and two altogether
Strength drifting dust blower fan 16 is separately mounted to the top and bottom of water pump pipeline 7.
In order that water pump pipeline 7 and the stable connection of high-pressure hydraulic pump 5, in the present embodiment, it is preferred that water pump pipeline 7 passes through spiral shell
Mother is fixedly connected with high-pressure hydraulic pump 5.
Embodiment 2
Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6 are referred to, the present invention provides a kind of technical scheme：A kind of Environmental Cities construction is used
Except haze big gun, including water inlet 22, the bottom of water inlet 22 is provided with storage tank 21, and the preceding surface of storage tank 21 is provided with electron stream
Gauge 3, the bottom side of storage tank 21 are provided with delivery port 6, and the bottom of storage tank 21 is provided with diesel generating set 4, diesel generation
The side of unit 4 is provided with high-pressure hydraulic pump 5, and side of the high-pressure hydraulic pump 5 away from diesel generating set 4 is provided with water pump pipeline 7, water
Side of the pump line road 7 away from high-pressure hydraulic pump 5 is provided with high-pressure plunger pump 8, and the top of high-pressure plunger pump 8 is provided with water-supply-pipe 9,
The top of water-supply-pipe 9 is provided with except haze machine 15, except the bottom of haze machine 15 is provided with except haze big gun machine bottom 10, except haze big gun machine bottom 10
Side is provided with rotary shaft 11, and rotary shaft 11 is provided with blower fan 12 away from the side except haze big gun machine bottom 10, and blower fan 12 is away from rotation
The side of axle 11 is provided with wind-force guide shell 13, and side of the wind-force guide shell 13 away from blower fan 12 is provided with atomizer 14, water
The top in pump line road 7 is provided with strength drifting dust blower fan 16, and the side of storage tank 21 is provided with large-scale vacuum cleaner 17, storage tank 2
Inner side is provided with impurity filtering net 18, and the top of impurity filtering net 18 is provided with flexible chain 19, and the top of flexible chain 19 is provided with
Put and receive chain apparatus 20.
In order that the inside easy cleaning of storage tank 21, in the present embodiment, it is preferred that storage tank is positive and negative round estrade knot about 21
Structure.
In order that flexible chain 19 is easy for removal and installation, in the present embodiment, it is preferred that impurity filtering net 18 and flexible chain
19 pass through buckle card and connection.
In order that drifting dust is more efficiently, in the present embodiment, it is preferred that strength drifting dust blower fan 16 is provided with two, and two altogether
Strength drifting dust blower fan 16 is separately mounted to the top and bottom of water pump pipeline 7.
In order that water pump pipeline 7 and the stable connection of high-pressure hydraulic pump 5, in the present embodiment, it is preferred that water pump pipeline 7 passes through spiral shell
Mother is fixedly connected with high-pressure hydraulic pump 5.
The operation principle and process for using of the present invention：Water is injected into storage tank 2 by water inlet 1, it is miscellaneous during water inlet
Matter screen pack 18 can filter the heavy metal in water and other impurities, open diesel generating set 4, by high-pressure hydraulic pump 5 by water
High-pressure plunger pump 8 is transferred to by water pump pipeline 7, then water pressurizeed using high-pressure plunger pump 8, is input to by water-supply-pipe 9
Atomizer 14, the aerial water smoke that floats in the air is formed by blower fan 12, wind-force guide shell 13 and atomizer 14, water smoke is sent out
It is sent to relatively at a distance, water smoke can adsorb fine dusts and suspended particulates in air.Except haze big gun is during walking, strength
Drifting dust blower fan 16 can blow afloat the dust in roadside, large-scale vacuum cleaner 17 can in the dust whole inhalation machine blown afloat, if it is desired to
Impurity filtering net 18 is cleaned, impurity filtering net 18 is risen by putting receipts chain apparatus 20, removes cleaning.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of Environmental Cities construction is with removing haze big gun, including water inlet (1), it is characterised in that：The bottom of the water inlet (1) is set
Storage tank (2) is equipped with, the preceding surface of the storage tank (2) is provided with electronic flowmeter (3), and the bottom side of the storage tank (2) is set
Delivery port (6) is equipped with, the bottom of the storage tank (2) is provided with diesel generating set (4), the diesel generating set (4)
Side is provided with high-pressure hydraulic pump (5), and side of the high-pressure hydraulic pump (5) away from diesel generating set (4) is provided with water pump pipeline
(7), side of the water pump pipeline (7) away from high-pressure hydraulic pump (5) is provided with high-pressure plunger pump (8), the high-pressure plunger pump (8)
Top be provided with water-supply-pipe (9), be provided with the top of the water-supply-pipe (9) except haze machine (15), it is described except the bottom of haze machine (15)
End is provided with except haze big gun machine bottom (10), the side except haze big gun machine bottom (10) are provided with rotary shaft (11), the rotary shaft
(11) side except haze big gun machine bottom (10) is provided with blower fan (12), side of the blower fan (12) away from rotary shaft (11) is set
Wind-force guide shell (13) is equipped with, side of the wind-force guide shell (13) away from blower fan (12) is provided with atomizer (14), institute
State and strength drifting dust blower fan (16) is provided with the top of water pump pipeline (7), the side of the storage tank (2) is provided with large-scale vacuum cleaner
(17) impurity filtering net (18), is provided with the inside of the storage tank (2), is provided with and stretches at the top of the impurity filtering net (18)
Contracting chain (19), it is provided with the top of the flexible chain (19) to put and receives chain apparatus (20).
2. a kind of Environmental Cities construction according to claim 1 is with removing haze big gun, it is characterised in that：The electronic flowmeter
(3) it is fixedly connected by nut with storage tank (2).
3. a kind of Environmental Cities construction according to claim 1 is with removing haze big gun, it is characterised in that：The impurity filtering net
(18) by buckle card and it is connected with flexible chain (19).
4. a kind of Environmental Cities construction according to claim 1 is with removing haze big gun, it is characterised in that：The strength drifting dust blower fan
(16) two are provided with altogether, and two strength drifting dust blower fans (16) are separately mounted to the top and bottom of water pump pipeline (7).
5. a kind of Environmental Cities construction according to claim 1 is with removing haze big gun, it is characterised in that：The water pump pipeline (7)
It is fixedly connected by nut with high-pressure hydraulic pump (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710901095.8A CN107684794A (en) | 2017-09-28 | 2017-09-28 | A kind of Environmental Cities construction is with removing haze big gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710901095.8A CN107684794A (en) | 2017-09-28 | 2017-09-28 | A kind of Environmental Cities construction is with removing haze big gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107684794A true CN107684794A (en) | 2018-02-13 |
Family
ID=61156865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710901095.8A Pending CN107684794A (en) | 2017-09-28 | 2017-09-28 | A kind of Environmental Cities construction is with removing haze big gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107684794A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108744796A (en) * | 2018-05-31 | 2018-11-06 | 安徽中疆环境科技有限公司 | A kind of air improvement fog gun vehicle |
| CN112495090A (en) * | 2020-11-12 | 2021-03-16 | 华能澜沧江水电股份有限公司托巴水电工程建设管理局 | Method for inhibiting blasting dust by high-pressure water gun |
| CN114471030A (en) * | 2022-01-27 | 2022-05-13 | 黄文华 | Building indoor ventilation dust suppression device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203625818U (en) * | 2013-11-20 | 2014-06-04 | 广东玛西尔电动科技有限公司 | Mist-spraying dust suppression device and sweeper |
| US20160250578A1 (en) * | 2015-02-27 | 2016-09-01 | Tung-Tsai Lee | Oil Mist Filter |
| CN206279479U (en) * | 2016-11-25 | 2017-06-27 | 浙江工业大学 | A kind of urban road dust suction is except haze sweeper |
| CN107081030A (en) * | 2017-05-21 | 2017-08-22 | 成都蒲江珂贤科技有限公司 | A kind of watering and lowering dust on building site subtracts haze system |
-
2017
- 2017-09-28 CN CN201710901095.8A patent/CN107684794A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203625818U (en) * | 2013-11-20 | 2014-06-04 | 广东玛西尔电动科技有限公司 | Mist-spraying dust suppression device and sweeper |
| US20160250578A1 (en) * | 2015-02-27 | 2016-09-01 | Tung-Tsai Lee | Oil Mist Filter |
| CN206279479U (en) * | 2016-11-25 | 2017-06-27 | 浙江工业大学 | A kind of urban road dust suction is except haze sweeper |
| CN107081030A (en) * | 2017-05-21 | 2017-08-22 | 成都蒲江珂贤科技有限公司 | A kind of watering and lowering dust on building site subtracts haze system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108744796A (en) * | 2018-05-31 | 2018-11-06 | 安徽中疆环境科技有限公司 | A kind of air improvement fog gun vehicle |
| CN108744796B (en) * | 2018-05-31 | 2021-04-06 | 安徽中疆环境科技有限公司 | Fog gun vehicle is administered to atmosphere |
| CN112495090A (en) * | 2020-11-12 | 2021-03-16 | 华能澜沧江水电股份有限公司托巴水电工程建设管理局 | Method for inhibiting blasting dust by high-pressure water gun |
| CN114471030A (en) * | 2022-01-27 | 2022-05-13 | 黄文华 | Building indoor ventilation dust suppression device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20180213 |