CN108211625A - A kind of anhydrous airborne dust processing unit of architectural engineering - Google Patents
A kind of anhydrous airborne dust processing unit of architectural engineering Download PDFInfo
- Publication number
- CN108211625A CN108211625A CN201810058336.1A CN201810058336A CN108211625A CN 108211625 A CN108211625 A CN 108211625A CN 201810058336 A CN201810058336 A CN 201810058336A CN 108211625 A CN108211625 A CN 108211625A
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- CN
- China
- Prior art keywords
- dust removing
- airborne dust
- housing
- removing tube
- discharge barrel
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- 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.)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Ventilation (AREA)
Abstract
The invention discloses a kind of anhydrous airborne dust processing units of architectural engineering,Including housing,The present invention provides a kind of anhydrous airborne dust processing unit of architectural engineering,The ingenious realization Non-aqueous processing of structure setting,Save water resource,Suction ventilator is sucked the airborne dust on building engineering construction place in cleaning position by blast pipe,The electrostatic precipitation net of discharge barrel bottom,Airborne dust fine particle in air draught housing,Larger airborne dust particle falls into material collecting tank with the collision of cleaning shaft side wall in cleaning position and enters in discharge barrel in housing,And it is discharged by the discharge mechanism in discharge barrel,High dust collection efficiency,Cleaning shaft is arranged to U-shaped,Improve the collision area of airborne dust particle,Airborne dust, which enters in cleaning shaft, to be trapped,The airborne dust of retention enters by passage in storage bin,Improve dust removing effects,Air in heating wire electrified regulation housing in cleaning shaft outboard deflector,Increase airborne dust and cleaning shaft outer wall collision frequency in air,Further improve dust removing effects.
Description
Technical field
The present invention relates to building engineering construction airborne dust processing equipment technical field, specifically a kind of architectural engineering is with no bigcatkin willow
Dirt processing unit.
Background technology
Airborne dust be due to the dust on ground wind-force, it is artificial drive and other drives are flown upward and into the opening of air
Pollution sources are the important components of overall suspended pellet in surrounding air.
The muddy water for scrubbing road accumulation is cleaned using rainwater resource after rainfall immediately, be avoid road soil air-dry after repeatedly
The most effective means of airborne dust are formed, while can avoid cleaning to form airborne dust during fine day, cleaning water also can be greatly saved, be mesh
The measure that the preceding vast cities and towns of China should take immediately.In the design and construction for hardening road, pay attention to strictly using rational
Road surface cross fall and road edge Drainage Design wash away cleaning road surface dust, for reducing airborne dust using natural precipitation runoff
Pollution can play a multiplier effect, and be the important long-acting measure for administering dust pollution.
Construction refers to the production activity of engineering construction implementation phase, is the building course of all kinds of buildings, can also
It says it is various lines on design drawing, in specified place, becomes process in kind.It includes basic engineering construction, master
Body structure construction, roof construction, decorative engineering construction etc..The place of construction operation is known as " construction site " or cries "
Building site is also named in construction site ", and during often generating a large amount of airborne dusts, especially earth excavation in building construction process, airborne dust is tight
Environment is endangered again, and traditional airborne dust treating method, which uses, sprays water, however water spray dust's serious waste water resource.
Invention content
The purpose of the present invention is to provide a kind of anhydrous airborne dust processing unit of architectural engineering, to solve above-mentioned background technology
The problem of middle proposition.
To achieve the above object, the present invention provides following technical solution:
A kind of anhydrous airborne dust processing unit of architectural engineering, including housing, the housing inner top is provided with clean storehouse, described clean
Exhaust pipe is connected on the side wall of net storehouse, the exhaust pipe outer end is provided with exhaust cone, and exhaust pump, institute are provided on the exhaust pipe
State in housing and cleaning position be provided with below clean storehouse, the hull outside is provided with the blast pipe connected with cleaning position, it is described into
Air hose outer end is provided with air intake cover, and suction ventilator is provided on the blast pipe, is provided with and multiple is connected with clean storehouse in cleaning position
Cleaning shaft, bottom is provided with material collecting tank in the housing, and the material collecting tank is V-shaped, and the housing bottom corresponds to material collecting tank
Discharge barrel is provided with, the discharge barrel is laterally set, and opening is provided at the top of discharge barrel, discharge barrel top is by being open with gathering materials
Slot connects, and is provided with electrostatic precipitation net on the discharge barrel inner wall, the arc-shaped tubulose of the electrostatic precipitation net and fitting discharge barrel
Inner wall, discharge barrel right end stretch out hull outside, and discharge barrel right-hand end is provided with discharge port.
As further embodiment of the present invention:The cleaning shaft takes the shape of the letter U, the cleaning shaft include the first dust removing tube and
Second dust removing tube, first dust removing tube and the second dust removing tube be vertically arranged in parallel and bottom end be aligned, first dust removing tube and
Second dust removing tube bottom end is connected by third dust removing tube, and the third dust removing tube is semi-circular pipe, and the first dust removing tube, second remove
Dirt pipe and third dust removing tube form U-shaped cleaning shaft, and the first dedusting length of tube is more than the second dust removing tube, first dedusting
Tube top end is fixed on clean orlop portion and is connected with clean storehouse.
As further scheme of the invention:Deflector is provided on the cleaning shaft, the deflector is symmetrically set
It puts at left and right sides of the first dust removing tube and the second dust removing tube, the deflector tilts down setting, is provided on the deflector
Heating wire, the heating wire are spirally wrapped around on deflector.
As further scheme of the invention:Cleaning storehouse inner top is provided with ultraviolet disinfection lamp.
Exhaust pipe nozzle position, which is corresponded to, in the cleaning storehouse is provided with filter screen.
Discharging structure is provided in the discharge barrel, the discharging structure includes discharging axle, is provided in the discharging axle
Spiral discharging page, the corresponding discharge barrel left end in housing left side are fixedly installed the discharging machine of driving discharging axle rotation.
The housing bottom is symmetrically set with supporting rack, and support frame as described above bottom end is provided with traveling wheel.
Storage bin is provided in the housing sidewall, the storage bin upper top is provided with feed pipe, the third discharging
Bottom of the tube is connected with passage, and the passage tilts down setting, connect at the top of passage bottom end and feed pipe.
Compared with prior art, the beneficial effects of the invention are as follows:The present invention is provided at a kind of anhydrous airborne dust of architectural engineering
Device is managed, the ingenious realization Non-aqueous processing of structure setting saves water resource, and suction ventilator is by blast pipe by building engineering construction place
On airborne dust sucking cleaning position in, the electrostatic precipitation net of discharge barrel bottom, airborne dust fine particle in air draught housing is larger in housing
Airborne dust particle fall into material collecting tank with the collision of cleaning shaft side wall in cleaning position and enter in discharge barrel, and by discharge barrel
Discharge mechanism is discharged, high dust collection efficiency, and cleaning shaft is arranged to U-shaped, improves the collision area of airborne dust particle, and airborne dust enters dedusting
It is trapped in pipeline, the airborne dust of retention enters by passage in storage bin, improves dust removing effects, cleaning shaft outboard deflector
On heating wire electrified regulation housing in air, increase airborne dust and cleaning shaft outer wall collision frequency in air, further improve
Dust removing effects.
Description of the drawings
Fig. 1 is the structure diagram of the anhydrous airborne dust processing unit of architectural engineering.
Fig. 2 is the structure diagram of architectural engineering cleaning shaft in anhydrous airborne dust processing unit.
Fig. 3 is the side view of the anhydrous airborne dust processing unit of architectural engineering.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution 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, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig.1~3, in the embodiment of the present invention, a kind of anhydrous airborne dust processing unit of architectural engineering, including housing 1,
1 inner top of housing is provided with clean storehouse 19, and 19 inner top of the cleaning storehouse is provided with ultraviolet disinfection lamp 18, the cleaning
Exhaust pipe 15 is connected on 19 side wall of storehouse, 15 outer end of exhaust pipe is provided with exhaust cone 14, is provided on the exhaust pipe 15
Exhaust pump 13 correspond to 15 nozzle position of exhaust pipe in the cleaning storehouse 19 and is provided with filter screen 16, cleaning storehouse 19 in the housing 1
Lower section is provided with cleaning position 17, and 1 outside of housing is provided with the blast pipe 2 connected with cleaning position 17,2 outer end of blast pipe
Air intake cover 3 is provided with, suction ventilator 4 is provided on the blast pipe 2, multiple cleaning shafts 12 are provided in cleaning position 17, it is described
Cleaning shaft 12 takes the shape of the letter U, and the cleaning shaft 12 includes the first dust removing tube 20 and the second dust removing tube 21, first dust removing tube 20
It is vertically arranged in parallel with the second dust removing tube 21 and bottom end is aligned, 20 and second dust removing tube of the first dust removing tube, 21 bottom end passes through the
Three dust removing tubes 23 connect, and the third dust removing tube 23 is semi-circular pipe, and the first dust removing tube 20, the second dust removing tube 21 and third are removed
Dirt pipe 23 forms U-shaped cleaning shaft, and 20 length of the first dust removing tube is more than the second dust removing tube 21, and first dust removing tube 20 pushes up
End is fixed on clean 19 bottom of storehouse and is connected with clean storehouse 19, and storage bin 27, the storage bin are provided on 1 side wall of housing
27 upper tops are provided with feed pipe 28, and 23 bottom of third discharge nozzle is connected with passage 24, and the passage 24 dips down
Tiltedly setting, 24 bottom end of passage are connect with 28 top of feed pipe, and bottom is provided with material collecting tank 29 in the housing 1, described to gather materials
Slot 29 is V-shaped, and 1 bottom of housing corresponds to material collecting tank 29 and is provided with discharge barrel 10, the discharge barrel 10 laterally setting, discharge barrel
10 tops are provided with opening 30, and 10 top of discharge barrel is connected with material collecting tank 29 by opening 30, set on 10 inner wall of discharge barrel
It is equipped with electrostatic precipitation net 26, the 26 arc-shaped tubulose of electrostatic precipitation net and fitting 10 inner wall of discharge barrel, 10 right end of discharge barrel are stretched
Go out 1 outside of housing, 10 right-hand end of discharge barrel is provided with discharge port 11, discharging structure is provided in the discharge barrel 10, described
Discharging structure includes discharging axle 8, and spiral discharging page 9, the corresponding discharge barrel 10 in 1 left side of housing are provided in the discharging axle 8
Left end is fixedly installed the discharging machine 5 that driving discharging axle 8 rotates, and 1 bottom of housing is symmetrically set with supporting rack 6,
6 bottom end of support frame as described above is provided with traveling wheel 7.
Deflector 22 is provided on the cleaning shaft 12, the deflector 22 is symmetricly set on the first dust removing tube 20 and
Two dust removing tubes, 21 left and right sides, the deflector 22 tilts down setting, heating wire 25 is provided on the deflector 22, described
Heating wire 25 is spirally wrapped around on deflector 22.
The present invention operation principle be:The present invention provides a kind of architectural engineering anhydrous airborne dust processing unit, structure setting
Ingenious and connection and reasonable arrangement, suction ventilator are sucked the airborne dust on building engineering construction place in cleaning position by blast pipe, discharge barrel
The electrostatic precipitation net 26 of bottom, airborne dust fine particle in air draught housing, in housing larger airborne dust particle in cleaning position with removing
The collision of dirt pipe side wall falls into material collecting tank and enters in discharge barrel, and is discharged by the discharge mechanism in discharge barrel, high dust collection efficiency,
Cleaning shaft is arranged to U-shaped, improves the collision area of airborne dust particle, airborne dust, which enters in cleaning shaft, to be trapped, the airborne dust of retention
Enter in storage bin by passage, raising dust removing effects, the heating wire electrified regulation housing in cleaning shaft outboard deflector
Interior air increases airborne dust and cleaning shaft outer wall collision frequency in air, further improves dust removing effects.
It is obvious to a person skilled in the art that the present invention is not limited to the details of above-mentioned exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requirement rather than above description limit, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims
Variation is included within the present invention.Any reference numeral in claim should not be considered as to the involved claim of limitation.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in each embodiment can also be properly combined, forms those skilled in the art
The other embodiment being appreciated that.
Claims (8)
1. a kind of anhydrous airborne dust processing unit of architectural engineering, including housing(1), which is characterized in that the housing(1)Inner top
It is provided with clean storehouse(19), the cleaning storehouse(19)Exhaust pipe is connected on side wall(15), the exhaust pipe(15)Outer end is set
There is exhaust cone(14), the exhaust pipe(15)On be provided with exhaust pump(13), the housing(1)Interior cleaning storehouse(19)Lower section is set
There is cleaning position(17), the housing(1)Outside is provided with and cleaning position(17)The blast pipe of connection(2), the blast pipe(2)Outside
End is provided with air intake cover(3), the blast pipe(2)On be provided with suction ventilator(4), cleaning position(17)Inside be provided with it is multiple with it is clean
The cleaning shaft of storehouse connection(12), the housing(1)Interior bottom is provided with material collecting tank(29), the material collecting tank(29)It is V-shaped, institute
State housing(1)Bottom corresponds to material collecting tank(29)It is provided with discharge barrel(10), the discharge barrel (10) is laterally set, discharge barrel (10)
Top is provided with opening(30), discharge barrel(10)Top passes through opening(30)With material collecting tank(29)Connection, the discharge barrel(10)
Electrostatic precipitation net is provided on inner wall(26), the electrostatic precipitation net(26)Arc-shaped tubulose and fitting discharge barrel(10)Inner wall,
Discharge barrel(10)Right end stretches out housing(1)Outside, discharge barrel(10)Right-hand end is provided with discharge port(11).
2. the anhydrous airborne dust processing unit of architectural engineering according to claim 1, which is characterized in that the cleaning shaft
(12)It takes the shape of the letter U, the cleaning shaft(12)Including the first dust removing tube(20)With the second dust removing tube(21), first dust removing tube
(20)With the second dust removing tube(21)It is vertically arranged in parallel and bottom end is aligned, first dust removing tube(20)With the second dust removing tube(21)
Bottom end passes through third dust removing tube(23)Connection, the third dust removing tube(23)For semi-circular pipe, the first dust removing tube(20), second
Dust removing tube(21)With third dust removing tube(23)Form U-shaped cleaning shaft, first dust removing tube(20)Length is more than the second dedusting
Pipe(21), first dust removing tube(20)Top is fixed on clean storehouse(19)Bottom and with clean storehouse(19)Connection.
3. the anhydrous airborne dust processing unit of architectural engineering according to claim 1, which is characterized in that the cleaning shaft
(12)On be provided with deflector(22), the deflector(22)It is symmetricly set on the first dust removing tube(20)With the second dust removing tube(21)
The left and right sides, the deflector(22)Tilt down setting, the deflector(22)On be provided with heating wire(25), the electric heating
Silk(25)It is spirally wrapped around deflector(22)On.
4. the anhydrous airborne dust processing unit of architectural engineering according to claim 1, which is characterized in that the cleaning storehouse(19)
Inner top is provided with ultraviolet disinfection lamp(18).
5. the anhydrous airborne dust processing unit of architectural engineering according to claim 1, which is characterized in that the cleaning storehouse(19)
Interior corresponding exhaust pipe(15)Nozzle position is provided with filter screen(16).
6. the anhydrous airborne dust processing unit of architectural engineering according to claim 1, which is characterized in that the discharge barrel(10)
Discharging structure is inside provided with, the discharging structure includes discharging axle(8), the discharging axle(8)On be provided with spiral discharging page
(9), the housing(1)Left side corresponds to discharge barrel(10)Left end is fixedly installed driving discharging axle(8)The discharging machine of rotation
(5).
7. the anhydrous airborne dust processing unit of architectural engineering according to claim 1, which is characterized in that the housing(1)Bottom
Portion is symmetrically set with supporting rack(6), support frame as described above(6)Bottom end is provided with traveling wheel(7).
8. the anhydrous airborne dust processing unit of architectural engineering according to claim 1, which is characterized in that the housing(1)Side
Storage bin is provided on wall(27), the storage bin(27)Upper top is provided with feed pipe(28), the third discharge nozzle(23)
Bottom is connected with passage(24), the passage(24)Tilt down setting, passage(24)Bottom end and feed pipe(28)Top
Portion connects.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201810058336.1A CN108211625A (en) | 2018-01-22 | 2018-01-22 | A kind of anhydrous airborne dust processing unit of architectural engineering |
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Application Number | Priority Date | Filing Date | Title |
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CN201810058336.1A CN108211625A (en) | 2018-01-22 | 2018-01-22 | A kind of anhydrous airborne dust processing unit of architectural engineering |
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CN108211625A true CN108211625A (en) | 2018-06-29 |
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CN201810058336.1A Pending CN108211625A (en) | 2018-01-22 | 2018-01-22 | A kind of anhydrous airborne dust processing unit of architectural engineering |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108815975A (en) * | 2018-08-20 | 2018-11-16 | 滁州市棋然装饰工程有限公司 | A kind of dust-extraction unit of architectural engineering |
CN110201470A (en) * | 2019-06-14 | 2019-09-06 | 合肥天翔环境工程有限公司 | A kind of exhaust-gas treatment structure of Spraying Dryer of Ceramics |
CN111905507A (en) * | 2020-07-15 | 2020-11-10 | 河源路源重科实业有限公司 | Dust removal device for bucket lifting type stirring station |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1248480A (en) * | 1998-09-22 | 2000-03-29 | 王重生 | Multi-function combined compressed air purifier |
EP1223333A2 (en) * | 2001-01-13 | 2002-07-17 | Agco GmbH & Co. | Dry air filter for internal combustion engines of utility vehicles |
CN101530710A (en) * | 2008-12-30 | 2009-09-16 | 无锡湖光工业炉有限公司 | Process and equipment for purifying flue gas in dry type for biomass electric power plant |
CN205252743U (en) * | 2015-12-18 | 2016-05-25 | 湖南磊鑫新材料科技有限公司 | Ore dust dust removal collection device |
CN205392088U (en) * | 2016-03-04 | 2016-07-27 | 北京创新纪技术开发有限公司 | Burn burning furnace exhaust treatment device |
CN107321067A (en) * | 2017-08-03 | 2017-11-07 | 曾玉琼 | A kind of construction waste crushing dust arrester |
CN107597784A (en) * | 2017-11-08 | 2018-01-19 | 高军 | A kind of building site dust processing equipment |
-
2018
- 2018-01-22 CN CN201810058336.1A patent/CN108211625A/en active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1248480A (en) * | 1998-09-22 | 2000-03-29 | 王重生 | Multi-function combined compressed air purifier |
EP1223333A2 (en) * | 2001-01-13 | 2002-07-17 | Agco GmbH & Co. | Dry air filter for internal combustion engines of utility vehicles |
CN101530710A (en) * | 2008-12-30 | 2009-09-16 | 无锡湖光工业炉有限公司 | Process and equipment for purifying flue gas in dry type for biomass electric power plant |
CN205252743U (en) * | 2015-12-18 | 2016-05-25 | 湖南磊鑫新材料科技有限公司 | Ore dust dust removal collection device |
CN205392088U (en) * | 2016-03-04 | 2016-07-27 | 北京创新纪技术开发有限公司 | Burn burning furnace exhaust treatment device |
CN107321067A (en) * | 2017-08-03 | 2017-11-07 | 曾玉琼 | A kind of construction waste crushing dust arrester |
CN107597784A (en) * | 2017-11-08 | 2018-01-19 | 高军 | A kind of building site dust processing equipment |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108815975A (en) * | 2018-08-20 | 2018-11-16 | 滁州市棋然装饰工程有限公司 | A kind of dust-extraction unit of architectural engineering |
CN108815975B (en) * | 2018-08-20 | 2021-03-23 | 安徽棋然建筑科技有限公司 | Dust collector that building engineering used |
CN110201470A (en) * | 2019-06-14 | 2019-09-06 | 合肥天翔环境工程有限公司 | A kind of exhaust-gas treatment structure of Spraying Dryer of Ceramics |
CN111905507A (en) * | 2020-07-15 | 2020-11-10 | 河源路源重科实业有限公司 | Dust removal device for bucket lifting type stirring station |
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Application publication date: 20180629 |
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