CN107724507A - A kind of gutter inlet device - Google Patents

A kind of gutter inlet device Download PDF

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Publication number
CN107724507A
CN107724507A CN201711085848.9A CN201711085848A CN107724507A CN 107724507 A CN107724507 A CN 107724507A CN 201711085848 A CN201711085848 A CN 201711085848A CN 107724507 A CN107724507 A CN 107724507A
Authority
CN
China
Prior art keywords
drainage trough
inlet device
casing
rainwater
gutter inlet
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
Application number
CN201711085848.9A
Other languages
Chinese (zh)
Inventor
张伟
代金文
邢成
钟兴
车伍
李俊奇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing University of Civil Engineering and Architecture
Original Assignee
Beijing University of Civil Engineering and Architecture
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Beijing University of Civil Engineering and Architecture filed Critical Beijing University of Civil Engineering and Architecture
Priority to CN201711085848.9A priority Critical patent/CN107724507A/en
Publication of CN107724507A publication Critical patent/CN107724507A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/04Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F5/0401Gullies for use in roads or pavements
    • E03F5/0404Gullies for use in roads or pavements with a permanent or temporary filtering device; Filtering devices specially adapted therefor
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/04Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F5/042Arrangements of means against overflow of water, backing-up from the drain
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F2201/00Details, devices or methods not otherwise provided for
    • E03F2201/10Dividing the first rain flush out of the stormwater flow

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Water Treatment By Sorption (AREA)

Abstract

The present invention relates to rainwater treatment field, discloses a kind of gutter inlet device, including casing, drainage trough, rain perforaled strainer, overflow baffle, filtering medium layer and storm sewer;Rain perforaled strainer is located at the top of casing, drainage trough is provided with casing and below rain perforaled strainer, drainage trough downward vertical is provided with overflow baffle, casing is divided into rainwater storage filtering area and catchment by overflow baffle, the bottom of rainwater storage filtering area is equipped with filtering medium layer, and the end of drainage trough is located at the top of rainwater storage filtering area, and the bottom of overflow baffle is provided with permeable hole, for connecting rainwater storage filtering area and catchment, catchment is provided with storm sewer.The gutter inlet device of the present invention can effectively control medium and small rainfall and Initial Runoff to pollute;With early-stage rainwater storage area;It is convenient that early-stage rainwater filter packing is changed, and the operation maintenance of inlet for stom water later stage requires low, and excessively stream rainwater can be provided with overflow ducts between drainage trough and the overflow baffle and discharge.

Description

A kind of gutter inlet device
Technical field
The present invention relates to rainwater treatment field, more particularly to a kind of gutter inlet device.
Background technology
In recent years, early-stage rainwater pollution problem at home and abroad receives extensive concern.Because rainfall runoff containing plurality of heavy metal, The polluters such as organic matter, nutritive salt, suspended particulate substance, such as without effective processing, river course is directly discharged into through storm sewer, must Urban Water Environment will be caused seriously to pollute.Therefore, it is very necessary for city initial rainwater being controlled.
China is inadequate to city initial rainwater footpath flow control attention degree, is currently limited to use just part Roof Runoff Phase rainwater flow-discarding device, the early-stage rainwater stream abandoning of separation are handled to municipal wastewater pipeline system into sewage plant.It is but right Controlled in road rain water runoff pollution and lack effective measures.According to existing sewerage system design method, road rain water runoff By earth's surface functional in organized water drainage to inlet for stom water, municipal Stormwater Drainage System is emitted into by branch drain, is finally directly discharged to City receiving water body.Numerous studies show that pollutant first flush phenomenon is obvious in all kinds of city underlying surface runoffs, into row After water pipe canal system system, influenceed by many factors such as drainage pipeline topological structure, concentration time, pipeline deposits, drainage system The first flush phenomenon for going out stream is not notable.Therefore for urban runoff contamination control, especially early-stage rainwater contamination control, more exist " source " effect is better.For urban road drainage system, carrying out early-stage rainwater control in inlet for stom water has higher take Ratio is imitated, effect is more preferable.
Traditional design of gully does not consider Urban Rainwater Runoff Pollution control.With to road rain water runoff pollution control The attention of system, there is multinomial inlet for stom water contamination control patent to disclose or authorize at present.Wherein, a kind of inlet for stom water efficiently cuts dirty dress To put, patent No. CN201410029089.4, the efficient pollution cutting device of inlet for stom water that the patent provides cuts dirty net by pollution cutting device, The pollutant that leaf, the scraps of paper, cigarette end etc. enter inlet for stom water can be retained, prevents the blocking of inlet for stom water and pipeline;Pass through device surrounding The filtrate of headspace filling, removes the particulate matter in early-stage rainwater runoff;When run-off is larger, rainwater can be without filter material layer Catch-basin bottom space is directly entered by screen pack.The patent of invention is cutting dirty net week side setting filtrate, but limited by the structure, Its filtrate thickness is smaller, determines that its filtrate saturation time is short, and device usage time and replacement cycle are short, while this sets Put mode its filter material replacement inconvenience;Device overfall, which is arranged at, cuts dirt on the net, is limited by conveyance capacity, possibly can not ensure rainwater Mouth design conveyance capacity, influence region drainage waterlogging prevention safety.
Disclose or authorized at present inlet for stom water to cut dirty or pollution control technology, device, structure, certain journey can be achieved mostly Contamination control effect on degree, but following one or more of problems be present:1) only controllable bulky grain or single type pollutant, mistake It is poor to filter effect;2) without early-stage rainwater storage area;3) the problems such as operation maintenance inconvenience;4) inlet for stom water excessively stream energy can not be effectively ensured Power.
The content of the invention
(1) technical problems to be solved
It is an object of the invention to provide a kind of gutter inlet device, solves Rainwater Initial processing filter effect in the prior art Difference;Without early-stage rainwater storage area;Operation maintenance inconvenience;Excessively stream rainwater timely and effective can not be discharged, and cause to install pollution cutting device Afterwards, the actual conveyance capacity of inlet for stom water does not reach its design drainability.
(2) technical scheme
In order to solve the above-mentioned technical problem, the present invention provides a kind of gutter inlet device, it is characterised in that including casing, draws Chute, rain perforaled strainer, overflow baffle, filtering medium layer and storm sewer;Wherein, the rain perforaled strainer is located at the top of the casing Portion, is provided with drainage trough in the casing and below the rain perforaled strainer, and the drainage trough downward vertical is provided with described overflow Baffle plate is flowed, the casing is divided into rainwater storage filtering area and catchment, the rainwater storage filtering area by the overflow baffle Bottom be equipped with filtering medium layer, the end of the drainage trough is located at the top of the rainwater storage filtering area, the overflow The bottom of baffle plate is provided with permeable hole, and for connecting the rainwater storage filtering area and the catchment, the catchment is provided with rain Waterpipe, overflow ducts are provided between the drainage trough and the overflow baffle.
Wherein, the drainage trough is set along the box inside wall.
Wherein, the drainage trough is " U " font.
Wherein, in addition to deck, the deck is on the box inside wall, for fixing the drainage trough.
Wherein, the aperture of the permeable hole is less than the minimum grain size of the filtering medium layer.
Wherein, the end of the drainage trough extends downwardly.
Wherein, the material of the drainage trough is stainless steel, cast iron, high density polyethylene (HDPE), aluminium alloy or titanium alloy.
Wherein, the material of the filtering medium layer is cobble, quartz sand, activated carbon, zeolite or mixed fillers.
Wherein, the permeable hole is shaped as circular, square, rhombus, triangle, rectangle or trapezoidal.
(3) beneficial effect
A kind of gutter inlet device provided by the invention, rainfall initial stage, early-stage rainwater flow into rain perforaled strainer by surface runoff, Rainwater storage filtering area is imported by drainage trough, early-stage rainwater runoff passes through filter medium by collecting in rainwater storage filtering area The processing at initial stage of layer, storm sewer is discharged into by the permeable hole of overflow baffle bottom.The gutter inlet device of the present invention can be controlled effectively Make medium and small rainfall and Initial Runoff pollution;With early-stage rainwater storage area;It is convenient that early-stage rainwater filter packing is changed, inlet for stom water Later stage operation maintenance requires low, and excessively stream rainwater can be provided with overflow ducts between drainage trough and the overflow baffle and discharge, and protect Card rainwater conveyance capacity meets that it designs drainability etc. and required.
Brief description of the drawings
Fig. 1 is a kind of top view of gutter inlet device of the present invention;
Fig. 2 is a kind of plan of gutter inlet device of the present invention;
Fig. 3 is a kind of A-A sectional views of gutter inlet device of the present invention;
Fig. 4 is a kind of B-B sectional views of gutter inlet device of the present invention;
Fig. 5 is schematic diagram when a kind of gutter inlet device of the present invention is run.
In figure, 1, storm sewer;2nd, rain perforaled strainer;3rd, kerbstone;4th, deck;5th, casing;6th, concrete foundation;7th, drain Groove;8th, overflow baffle;9th, permeable hole;10th, filtering medium layer.
Embodiment
With reference to the accompanying drawings and examples, the embodiment of the present invention is described in further detail.Following instance For illustrating the present invention, but it is not limited to the scope of the present invention.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected;Can To be mechanical connection or electrical connection;Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this Concrete meaning in invention.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, the present invention discloses a kind of gutter inlet device, including casing 5, drainage trough 7th, rain perforaled strainer 2, overflow baffle 8, filtering medium layer 10 and storm sewer 1;Wherein, rain perforaled strainer 2 is located at the top of casing 5, Drainage trough 7 is provided with casing 5 and below rain perforaled strainer 2, the downward vertical of drainage trough 7 is provided with overflow baffle 8, overflow baffle Casing 5 is divided into rainwater storage filtering area and catchment by 8, and the bottom of rainwater storage filtering area is equipped with filtering medium layer 10, The end of drainage trough 7 is located at the top of rainwater storage filtering area, and the bottom of overflow baffle 8 is provided with permeable hole 9, for connecting rainwater Storage filtering area and catchment, catchment are provided with storm sewer 1, overflow ducts, shape are provided between drainage trough 7 and overflow baffle 8 Into downflow weir.When Rainwater Initial or seldom ponding, the now particulate form pollutant in rainwater, dissolved pollutant or other pollutions Thing content is more, it is necessary to be filtered;The rainfall later stage, Rainfall runoff increase, because rain water pollutant content reduces, therefore can be without The water level rise that processing is directly discharged into storm sewer 1, i.e. rainwater storage filtering area is crossed, when water level reaches height of weir plate, is overflow Flow to storm sewer 1 and import municipal rain-water drainage area..
Specifically, the week side of boss at the top of casing 5 is provided with kerbstone 3, the bottom of casing 5 laying concrete foundation 6, the material of casing 5 is Brick cement sand plaster or metal or other materials, casing provide support and protection for whole device, ensure whole device Working environment.The material of rain perforaled strainer 2 is cast iron, stainless steel or concrete, and it is miscellaneous that rain perforaled strainer 2 can retain some larger rubbish Thing.The material of overflow baffle 8 is stainless steel, concrete, high density polyethylene (HDPE), aluminium alloy or titanium alloy, overflow baffle 8 and casing The inner space that 5 walls are formed is installed by easily changeable filtering medium layer 10.The inner space is rainwater storage filtering area, and its top is Early-stage rainwater storage area, bottom are filtering area.Storm sewer 1 is communicated to municipal rain-water drainage area.
The gutter inlet device of the present invention can effectively control medium and small rainfall and Initial Runoff to pollute;Early-stage rainwater filter packing is more Change conveniently, the operation maintenance of inlet for stom water later stage requires low, and excessively stream rainwater can be provided between drainage trough and the overflow baffle to overflow Circulation road is discharged, and effectively alleviates the problem of excessively stream rainwater can not discharge in time.
The course of work of the present apparatus at rainfall initial stage:As shown in figure 5, rainfall initial stage, early-stage rainwater pass through surface runoff stream Enter rain perforaled strainer 2, rainwater storage filtering area is imported by drainage trough 7, early-stage rainwater runoff filters by collecting in rainwater storage The processing at initial stage of the filtered dielectric layer 10 in area, storm sewer is discharged into by the permeable hole of overflow baffle bottom.Rainfall later stage, rainwater Run-off increases, and the water level rise of rainwater storage filtering area, when water level reaches height of weir plate, overflows to storm sewer 1 and converges Enter municipal rain-water drainage area, effectively alleviate the problem of excessively stream rainwater can not discharge in time.The filter medium of rainwater storage filtering area Layer 10 can targetedly select particular filter filler or filler combination according to the runoff pollution feature of inlet for stom water region, real Now to the control of specific pollutants, strengthen filter effect.After plant running certain time, filtering medium layer 10 tends to saturation, Rain perforaled strainer 2 can be opened, removes drainage trough 7, the top layer filler or whole fillers to filtering medium layer 10 carry out replacing maintenance, protect The subsequent normal operation of card device, it is easy to run and safeguards.
As shown in figure 5, wherein, drainage trough 7 is set along the madial wall of casing 5.Preferably, drainage trough 7 is " U " font.Because When Rainwater Initial or seldom ponding, early-stage rainwater imports drainage trough 7 by surface runoff from the surrounding of rain perforaled strainer 2.Will drainage Groove 7 is designed as " U " font, and intermediate portion is divided into hollow, and when Rainwater Initial or seldom ponding, most of rainwater imports drainage trough 7, it is drained to the filtering of rainwater storage filtering area;As Rainfall runoff increases, the rise of the water level of rainwater storage filtering area, first when When water level reaches height of weir plate, overflow to storm sewer 1 and import municipal rain-water drainage area, then when Rainfall runoff persistently increases When greatly, more than 7 flow of drainage trough, the lighter rainfall runoff of Final pollution can be without filtering, by " U " font drainage trough 7 Empty part, is directly discharged to storm sewer, realizes the rain water drainage in heavy rain period or rainfall later stage.
Wherein, in addition to deck 4, deck 4 is on the madial wall of casing 5, for fixing drainage trough 7.Specifically, deck is Integrative-structure, material are stainless steel, aluminium alloy, titanium alloy or composite.
Wherein, the aperture of permeable hole 9 is less than the minimum grain size of filtering medium layer 10.Ensure the filler of filtering medium layer 10 not Storm sewer can be entered through permeable hole 9.
Wherein, the end of drainage trough 7 extends downwardly, it is easier to the drainage of rainwater.
Wherein, the material of drainage trough 7 is stainless steel, cast iron, high density polyethylene (HDPE), aluminium alloy or titanium alloy.
Wherein, the material of filtering medium layer 10 is cobble, quartz sand, activated carbon, zeolite or its mixed fillers.Specifically, Its mixed fillers refers to the mixed fillers of two or more media in cobble, quartz sand, activated carbon, zeolite by different ratio, Also include other media such as clinker, haydite.
Wherein, permeable hole 9 is shaped as circular, square, rhombus, triangle, rectangle or trapezoidal.
The course of work of the present invention at rainfall initial stage and rainfall later stage:As shown in figure 5, rainfall initial stage, early-stage rainwater passes through Surface runoff flows into rain perforaled strainer 2, imports rainwater storage filtering area by drainage trough 7, early-stage rainwater runoff is by collecting, in rain The processing at initial stage of the water storage filtered dielectric layer 10 of filtering area, storm sewer is discharged into by the permeable hole of overflow baffle bottom.Drop In the rain later stage, Rainfall runoff increase, the water level rise of rainwater storage filtering area, when water level reaches height of weir plate, overflow to Storm sewer 1 imports municipal rain-water drainage area.When Rainfall runoff persistently increases, during more than 7 flow of drainage trough, Final pollution compared with Light rainfall runoff, by the hollow space of " U " font drainage trough 7, can be directly discharged to storm sewer, realize without filtering Heavy rain period or the rain water drainage in rainfall later stage.When needing to safeguard, rain perforaled strainer 2 can be opened, removes drainage trough 7, filtering is situated between The top layer filler or whole fillers of matter layer 10 carry out replacing maintenance, ensure the subsequent normal operation of device.
The gutter inlet device of the present invention can effectively control medium and small rainfall and Initial Runoff to pollute;Stored with early-stage rainwater empty Between;It is convenient that early-stage rainwater filter packing is changed, and the operation maintenance of inlet for stom water later stage requires low;With excessively stream disposal ability.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.

Claims (9)

1. a kind of gutter inlet device, it is characterised in that including casing (5), drainage trough (7), rain perforaled strainer (2), overflow baffle (8), filtering medium layer (10) and storm sewer (1);Wherein, the rain perforaled strainer (2) is located at the top of the casing (5), Drainage trough (7) is provided with the casing (5) and below the rain perforaled strainer (2), drainage trough (7) downward vertical is provided with The overflow baffle (8), the casing (5) is divided into rainwater storage filtering area and catchment by the overflow baffle (8), described The bottom of rainwater storage filtering area is equipped with filtering medium layer (10), and the end of the drainage trough (7) is located at the rainwater storage The top of filtering area, the bottom of the overflow baffle (8) are provided with permeable hole (9), for connect the rainwater storage filtering area and The catchment, the catchment are provided with storm sewer (1), are provided with and overflow between the drainage trough (7) and the overflow baffle (8) Circulation road.
2. gutter inlet device as claimed in claim 1, it is characterised in that the drainage trough (7) is along the casing (5) madial wall Set.
3. gutter inlet device as claimed in claim 2, it is characterised in that the drainage trough (7) is " U " font.
4. gutter inlet device as claimed in claim 1, it is characterised in that be also located at institute including deck (4), the deck (4) State on casing (5) madial wall, for fixing the drainage trough (7).
5. gutter inlet device as claimed in claim 1, it is characterised in that the aperture of the permeable hole (9) is less than the filtering The minimum grain size of dielectric layer (10).
6. gutter inlet device as claimed in claim 1, it is characterised in that the end of the drainage trough (7) extends downwardly.
7. gutter inlet device as claimed in claim 1, it is characterised in that the material of the drainage trough (7) is stainless steel, casting Iron, high density polyethylene (HDPE), aluminium alloy or titanium alloy.
8. gutter inlet device as claimed in claim 1, it is characterised in that the material of the filtering medium layer (10) be cobble, Quartz sand, activated carbon, zeolite or its mixed fillers.
9. gutter inlet device as claimed in claim 1, it is characterised in that being shaped as the permeable hole (9) be circular, square, Rhombus, triangle, rectangle or trapezoidal.
CN201711085848.9A 2017-11-07 2017-11-07 A kind of gutter inlet device Pending CN107724507A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711085848.9A CN107724507A (en) 2017-11-07 2017-11-07 A kind of gutter inlet device

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Application Number Priority Date Filing Date Title
CN201711085848.9A CN107724507A (en) 2017-11-07 2017-11-07 A kind of gutter inlet device

Publications (1)

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CN107724507A true CN107724507A (en) 2018-02-23

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108952026A (en) * 2018-08-31 2018-12-07 武汉华德环保工程技术有限公司 A kind of rain leader downspout rain sewage diversion device
CN109211622A (en) * 2018-09-27 2019-01-15 天津生态城水务投资建设有限公司 A kind of initial rainwater sample collection device
CN109208733A (en) * 2018-10-30 2019-01-15 中冶京诚工程技术有限公司 Rainwater cabin and pipe gallery with rainwater cabin
CN109763553A (en) * 2018-12-13 2019-05-17 四川大学 A kind of device suitable for controlling rainfall runoff particulate matter
CN111441542A (en) * 2020-03-11 2020-07-24 费贇 Gardens drainage system
CN112663756A (en) * 2020-12-17 2021-04-16 四川省建筑设计研究院有限公司 Road surface inlet for stom water conservancy diversion cuts dirty device
CN112962770A (en) * 2021-03-02 2021-06-15 北京雨人润科生态技术有限责任公司 Rainwater overflow well
CN114718176A (en) * 2022-04-21 2022-07-08 安徽省交通规划设计研究总院股份有限公司 Anti-overflow and anti-clogging rainwater grate and working mechanism thereof

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WO2006012648A2 (en) * 2004-07-21 2006-02-02 Fabco Industries, Inc. Storm sewer insert for filtering and treating stormwater
CN203065263U (en) * 2012-12-27 2013-07-17 浙江桃花源环保科技有限公司 Device for treating initial rainwater runoff pollution
CN103741783A (en) * 2014-01-22 2014-04-23 北京建筑大学 Efficient pollutant intercepting device for gutter inlet
CN105401649A (en) * 2015-12-23 2016-03-16 山东大学 Rainwater inlet trash barrier sieve used for filtering initial rainwater
CN206319391U (en) * 2016-12-28 2017-07-11 广东中天市政工程设计有限公司 Gutter inlet device
CN207919711U (en) * 2017-11-07 2018-09-28 北京建筑大学 A kind of gutter inlet device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006012648A2 (en) * 2004-07-21 2006-02-02 Fabco Industries, Inc. Storm sewer insert for filtering and treating stormwater
CN203065263U (en) * 2012-12-27 2013-07-17 浙江桃花源环保科技有限公司 Device for treating initial rainwater runoff pollution
CN103741783A (en) * 2014-01-22 2014-04-23 北京建筑大学 Efficient pollutant intercepting device for gutter inlet
CN105401649A (en) * 2015-12-23 2016-03-16 山东大学 Rainwater inlet trash barrier sieve used for filtering initial rainwater
CN206319391U (en) * 2016-12-28 2017-07-11 广东中天市政工程设计有限公司 Gutter inlet device
CN207919711U (en) * 2017-11-07 2018-09-28 北京建筑大学 A kind of gutter inlet device

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108952026A (en) * 2018-08-31 2018-12-07 武汉华德环保工程技术有限公司 A kind of rain leader downspout rain sewage diversion device
CN109211622A (en) * 2018-09-27 2019-01-15 天津生态城水务投资建设有限公司 A kind of initial rainwater sample collection device
CN109211622B (en) * 2018-09-27 2023-11-17 天津生态城水务投资建设有限公司 Initial rainwater sampling collector
CN109208733A (en) * 2018-10-30 2019-01-15 中冶京诚工程技术有限公司 Rainwater cabin and pipe gallery with rainwater cabin
CN109208733B (en) * 2018-10-30 2023-12-01 中冶京诚工程技术有限公司 Rainwater cabin and comprehensive pipe rack with same
CN109763553A (en) * 2018-12-13 2019-05-17 四川大学 A kind of device suitable for controlling rainfall runoff particulate matter
CN111441542A (en) * 2020-03-11 2020-07-24 费贇 Gardens drainage system
CN112663756A (en) * 2020-12-17 2021-04-16 四川省建筑设计研究院有限公司 Road surface inlet for stom water conservancy diversion cuts dirty device
CN112962770A (en) * 2021-03-02 2021-06-15 北京雨人润科生态技术有限责任公司 Rainwater overflow well
CN114718176A (en) * 2022-04-21 2022-07-08 安徽省交通规划设计研究总院股份有限公司 Anti-overflow and anti-clogging rainwater grate and working mechanism thereof
CN114718176B (en) * 2022-04-21 2023-08-22 安徽省交通规划设计研究总院股份有限公司 Anti-overflow anti-clogging rain grate and working mechanism thereof

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Application publication date: 20180223