CN112593614A - Sponge urban water system for building community - Google Patents
Sponge urban water system for building community Download PDFInfo
- Publication number
- CN112593614A CN112593614A CN202011484371.3A CN202011484371A CN112593614A CN 112593614 A CN112593614 A CN 112593614A CN 202011484371 A CN202011484371 A CN 202011484371A CN 112593614 A CN112593614 A CN 112593614A
- Authority
- CN
- China
- Prior art keywords
- drainage pipeline
- water
- underground drainage
- community
- rainwater
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 104
- 238000000746 purification Methods 0.000 claims abstract description 7
- 239000010865 sewage Substances 0.000 claims description 29
- 229920000742 Cotton Polymers 0.000 claims description 5
- 230000008595 infiltration Effects 0.000 abstract description 18
- 238000001764 infiltration Methods 0.000 abstract description 18
- 238000013461 design Methods 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 238000003860 storage Methods 0.000 abstract description 2
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 239000010802 sludge Substances 0.000 description 9
- 125000006850 spacer group Chemical group 0.000 description 9
- 238000005086 pumping Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 239000008213 purified water Substances 0.000 description 3
- 239000011449 brick Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/02—Arrangement of sewer pipe-lines or pipe-line systems
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
- E03F5/0401—Gullies for use in roads or pavements
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
- E03F5/06—Gully gratings
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
- E03F5/105—Accessories, e.g. flow regulators or cleaning devices
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F7/00—Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
- E03F7/02—Shut-off devices
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/04—Roof drainage; Drainage fittings in flat roofs, balconies or the like
- E04D13/08—Down pipes; Special clamping means therefor
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/04—Roof drainage; Drainage fittings in flat roofs, balconies or the like
- E04D13/08—Down pipes; Special clamping means therefor
- E04D2013/0873—Rain water reservoirs integrated in down pipes
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Sewage (AREA)
Abstract
The invention relates to a sponge urban water system for a building community. Including district underground drainage pipeline and with house rainwater drain pipe, the foot path rainwater runoff collection comb case of district underground drainage pipeline intercommunication, the play water end of house rainwater drain pipe stretches into in the foot path rainwater runoff collection comb incasement, the bottom that the foot path rainwater runoff was collected comb case is provided with the apopore, foot path rainwater runoff is collected comb bottom of the case and is stretched into the district underground drainage pipeline, be provided with the bilge pit on the district underground drainage pipeline, one side that the bilge pit kept away from foot path rainwater runoff collection comb case is provided with the infiltration board, the vertical setting of infiltration board is in the district underground drainage pipeline, the top of infiltration board and district underground drainage pipeline's lateral wall coupling, the one end that the infiltration board was kept away from to the district underground drainage pipeline communicates respectively has water purification pond and municipal drainage pipe. The invention has ingenious design, effectively realizes the functions of water absorption, water storage, water seepage and water purification and saves water resources.
Description
Technical Field
The invention belongs to the technical field of sponge city application, and particularly relates to a sponge city water system for a building community.
Background
The sponge city is a city which can be like a sponge, has good elasticity in the aspects of adapting to environmental changes, coping with natural disasters and the like, absorbs water, stores water, seeps water and purifies water when raining, and releases and utilizes the stored water when needed. Sponge city construction should follow ecological priority principle etc. combines together natural way and artificial measures, under the prerequisite of guaranteeing urban drainage waterlogging prevention safety, furthest realizes that rainwater stores up, permeates and purifies in the urban area, promotes the utilization of rainwater resource and ecological environment protection. In the sponge city construction process, the systematicness of natural rainfall, surface water and underground water is planned, water recycling links such as water supply and drainage are coordinated, and the complexity and the long-term property of the links are considered.
In order to reduce urban drainage pressure and save water resources, the existing building districts are also developed towards sponge cities during drainage planning, but as the existing sponge systems mostly use electric control equipment, property management units worry about other accidents and the idea of saving electric power, so that the existing sponge urban water systems cannot really walk into the districts, and therefore, the sponge urban water systems for building the building districts with low cost and convenient maintenance are the direction of the existing key research.
Disclosure of Invention
Aiming at the technical problems of the sponge urban water system for the building community, the invention provides the sponge urban water system for the building community, which has the advantages of reasonable design, simple structure, convenient processing, effective realization of low cost and convenient maintenance.
In order to achieve the purpose, the invention adopts the technical scheme that the invention provides a sponge municipal water system for a building community, which comprises a community underground drainage pipeline, a house rainwater drainage pipe and a sidewalk rainwater runoff collecting grate box, wherein the house rainwater drainage pipe and the sidewalk rainwater runoff collecting grate box are communicated with the community underground drainage pipeline, the water outlet end of the house rainwater drainage pipe extends into the sidewalk rainwater runoff collecting grate box, the bottom of the sidewalk rainwater runoff collecting grate box is provided with a water outlet hole, the bottom of the sidewalk rainwater runoff collecting grate box extends into the community underground drainage pipeline, a sewage well is arranged on the community underground drainage pipeline, one side of the sewage well, far away from the sidewalk rainwater collecting grate box, is provided with a water seepage plate, the water seepage plate is vertically arranged in the community underground drainage pipeline, the top of the water seepage plate is in shaft connection with the side wall of the community underground drainage pipeline, one end, far away from the water seepage plate, of the community underground drainage pipeline is respectively communicated with a water purification pool and, and a three-way valve is arranged between the district underground drainage pipeline and the water purification tank and between the district underground drainage pipeline and the municipal drainage pipeline.
Preferably, a community garden is arranged above the sewage well, and a water guide cotton pipe is arranged between the community garden and the sewage well.
As preferred, still be provided with floater warning device in the district underground drainage pipeline, floater warning device is including setting up the floater in district underground drainage pipeline and setting up the extension rod at the floater top, the top of extension rod is provided with the warning sign, the warning sign sets up subaerial.
Preferably, the bottom of the sewage well is provided with a sewage pumping pipe.
Preferably, one side that the bilge well was kept away from to the infiltration board is provided with the spacer pin, but spacer pin plug setting is kept away from one side of bilge well at the infiltration board.
Compared with the prior art, the invention has the advantages and positive effects that,
1. the sponge urban water system for the building community is improved and rearranged, so that the use of electrical equipment in the whole system is avoided, meanwhile, sewage and purified water are separated, the pollution of a purified water tank caused by directly leading the traditional rainwater from the purified water tank to a municipal drainage pipeline when the traditional rainwater is overlarge is avoided, and meanwhile, the sponge urban water system for the building community is ingenious in design, effectively realizes the functions of water absorption, water storage, water seepage and water purification, and saves water resources.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.
FIG. 1 is a schematic structural diagram of a sponge municipal water system for a building community provided in example 1;
fig. 2 is a schematic structural view of a stopper pin according to embodiment 1;
fig. 3 is a structural diagram of the float warning device provided in embodiment 1;
in the above figures, 1, a district underground drainage pipeline; 11. a three-way valve; 2. a house rainwater drain pipe; 3. a sidewalk rainwater runoff collecting grate box; 31. a water outlet hole; 32. draining the water grate; 4. a bilge well; 41. a sewage pumping pipe; 5. a cell garden; 51. a water guide cotton pipe; 6. a water seepage plate; 61. a spacing pin; 7. a clear water tank; 8. municipal drainage pipelines; 9. a floating ball warning device; 91. a floating ball; 92. an extension rod; 93. a warning board.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments of the present disclosure.
Considering that along with the gradual increase of urban pollution garbage, the roof of a high floor may have some garbage such as plastic bags, and the garbage enters the underground drainage pipeline 1 of the residential area, which easily results in the functional failure of the underground drainage pipeline 1 of the residential area, for this reason, in this embodiment, the water outlet end of the house rainwater drainage pipe 2 extends into the sidewalk rainwater runoff collecting grate box 3, in this embodiment, the sidewalk rainwater runoff collecting grate box 3 is integrally arranged in a box shape, the drainage grate 32 is arranged at the top of the sidewalk rainwater runoff collecting grate box, and the water outlet hole 31 is arranged at the bottom of the sidewalk rainwater drainage grate box, so that the property personnel can collect some impurities conveniently, and can clear the garbage only by opening the drainage grate 32. The arrangement of the water outlet hole 31 does not affect the water discharge. In this embodiment. The bottom of the sidewalk rainwater runoff collecting grate box 3 extends into the underground drainage pipeline 1 of the community.
Considering that the water outlet hole 31 can block some solid such as branches, leaves and plastic bags, but cannot block dust and sludge, for this reason, the sewage well 4 is arranged on the underground drainage pipeline 1 of the community, in this embodiment, the sewage well 4 is provided with three purposes, the first purpose is to collect sludge, rainwater or other water with sludge firstly enters the sewage well 4, and the sewage well 4 has a certain depth, so that the sludge is precipitated in the sewage well 4, and the existence of sludge in the underground drainage pipeline 1 of the subsequent community is reduced; secondly, the sewage well 4 can play a role of buffering, a large amount of water can enter the sewage well and then continuously circulate to the rear underground drainage pipeline 1 of the residential area, the flow rate of the water can be slowed down, in the embodiment, one side of the sewage well 4, which is far away from the rainwater runoff collecting grate box 3 of the sidewalk, is provided with a water seepage plate 6, the water seepage plate 6 is vertically arranged in the underground drainage pipeline 1 of the residential area, the top of the water seepage plate 6 is connected with the side wall of the underground drainage pipeline 1 of the residential area in a shaft mode, the water seepage plate 6 is arranged in a structure similar to the existing water seepage brick, but the weight of the water seepage plate is light, therefore, in the embodiment, an upper structure and a lower structure are adopted, wherein the upper half part is arranged in a hollow mode, the lower half part is arranged in a water seepage brick structure, the weight of the lower half part is ensured to be light, under the condition of large water flow, thus, the rainwater is further purified by the precipitation of the sewage well 4 and the filtration of the water seepage plate 6; the third purpose is to form a reservoir for the flowers and trees in the community, for this reason, in this embodiment, a community garden 5 is arranged above the bilge well 4, and a water guide cotton pipe 51 is arranged between the community garden 5 and the bilge well 4, so that the flowers and trees in the community garden 5 can be supplemented with water for a long time by the arrangement of the water guide cotton sliver, and meanwhile, the water in the bilge well 4 is absorbed, so that the water in the bilge well 4 is reduced, and the purpose of cleaning the bilge well 4 is achieved, and in addition, the sludge contains certain nutrient substances, and the production of the flowers and trees is utilized.
After the rainwater treated by the water seepage plate 6 is further purified, for this reason, one end of the district underground drainage pipeline 1 far away from the water seepage plate 6 is communicated with a clean water tank 7, and the clean water tank 7 is used for collecting the purified rainwater and can be used for other purposes, such as landscape pool water and the like.
Consider that when the rainfall is too big, bilge well 4 can be filled up fast, and the rivers are great at this time, can strike infiltration board 6, make infiltration board 6 upset, make its function, for this reason, in this embodiment, district underground drainage pipeline 1 keeps away from the one end of infiltration board 6 and still leads to municipal drainage pipe 8, is provided with three-way valve 11 between district underground drainage pipeline 1 and clean water basin 7, the municipal drainage pipe 8. Thus, the flow of water is achieved by controlling the three-way valve 11, the three-way valve 11 being a manual valve.
In order to make the hydroenergy of passing through 4 cushions of bilge well can effectually pass through infiltration plate 6, and not the bottom through infiltration plate 6 flows away, in this embodiment, the height of bilge well 4 exceeds the district underground drainage pipeline 2 ~ 5cm of rear side slightly about, simultaneously, one side of keeping away from bilge well 4 at infiltration plate 6 is provided with spacer pin 61, spacer pin 61 can plug the setting in one side that bilge well 4 was kept away from to infiltration plate 6, spacer pin 61's setting, make infiltration plate 6 can hug closely the outer wall setting of bilge well 4, thus, ensure the infiltration effect, in this embodiment, for the convenience of the plug of spacer pin 61, the bottom of spacer pin 61 is the inclined plane form setting, thus, conveniently promote infiltration plate 6 and reset, simultaneously, the top of spacer pin 61 is provided with the handle, make things convenient for the property personnel to carry.
Consider once the rainwater is too much, and property staff forgets to pull out spacer pin 61, lead to sidewalk rainwater runoff to collect 3 spills water of comb case, for this reason, in this embodiment, still be provided with floater warning device 9 in district underground drainage pipeline 1, floater warning device 9 sets up the one side of keeping away from infiltration board 6 at bilge well 4, floater warning device 9 is including setting up floater 91 in district underground drainage pipeline 1 and setting up the extension rod 92 at floater 91 top, extension rod 92's top is provided with warning sign 93, warning sign 93 sets up subaerial. Like this, along with district underground drainage pipeline 1's water level increases, warning sign 93 under the effect of floater 91, highly constantly rises, and then reaches suggestion district personnel and property management personnel's purpose.
In order to facilitate cleaning of sludge, a sewage suction pipe 41 is provided at the bottom of the sewage shaft 4, considering that the sewage shaft 4 is certainly filled with sludge. Thus, the whole water system can work normally by pumping the sludge through the sewage pumping pipe 41, and the required maintenance cost is extremely low.
Through foretell setting, effectual realized the purpose of absorbing water, retaining, infiltration, water purification to rainwater in the building district under the condition of low-cost operation, solved the problem of the unable real entering of current sponge urban water system to the building district.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit of the present invention.
Claims (5)
1. A sponge municipal water system for a building community comprises a community underground drainage pipeline, a house rainwater drainage pipe and a sidewalk rainwater runoff collecting grate box, wherein the house rainwater drainage pipe and the sidewalk rainwater runoff collecting grate box are communicated with the community underground drainage pipeline, the sponge municipal water system is characterized in that the water outlet end of the house rainwater drainage pipe extends into the sidewalk rainwater runoff collecting grate box, the bottom of the sidewalk rainwater runoff collecting grate box is provided with a water outlet hole, the bottom of the sidewalk rainwater runoff collecting grate box extends into the community underground drainage pipeline, a sewage well is arranged on the community underground drainage pipeline, one side of the sewage well, far away from the sidewalk rainwater runoff collecting grate box, is provided with a water seepage plate, the water seepage plate is vertically arranged in the community underground drainage pipeline, the top of the water seepage plate is in shaft connection with the side wall of the community underground drainage pipeline, one end, far away from the water seepage plate, of the community underground drainage pipeline is respectively communicated with a water, and a three-way valve is arranged between the district underground drainage pipeline and the water purification tank and between the district underground drainage pipeline and the municipal drainage pipeline.
2. The sponge municipal water system for building communities as claimed in claim 1, wherein a community garden is arranged above the sewage well, and a water guide cotton pipe is arranged between the community garden and the sewage well.
3. The sponge municipal water system for building communities as claimed in claim 2, wherein a floating ball warning device is further disposed in the community underground drainage pipeline, the floating ball warning device comprises a floating ball disposed in the community underground drainage pipeline and an extension rod disposed on the top of the floating ball, a warning board is disposed on the top of the extension rod, and the warning board is disposed on the ground.
4. The sponge municipal water system for building communities of claim 3, wherein a sewage suction pipe is provided at the bottom of the sewage well.
5. The sponge municipal water system for building communities of claim 4, wherein the side of the water seepage plate away from the sewage well is provided with a limit pin, and the limit pin is detachably arranged on the side of the water seepage plate away from the sewage well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011484371.3A CN112593614A (en) | 2020-12-16 | 2020-12-16 | Sponge urban water system for building community |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011484371.3A CN112593614A (en) | 2020-12-16 | 2020-12-16 | Sponge urban water system for building community |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112593614A true CN112593614A (en) | 2021-04-02 |
Family
ID=75196212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011484371.3A Pending CN112593614A (en) | 2020-12-16 | 2020-12-16 | Sponge urban water system for building community |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112593614A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117417098A (en) * | 2023-12-18 | 2024-01-19 | 水利部牧区水利科学研究所 | Floating type sponge urban rain sewage treatment device and treatment method |
-
2020
- 2020-12-16 CN CN202011484371.3A patent/CN112593614A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117417098A (en) * | 2023-12-18 | 2024-01-19 | 水利部牧区水利科学研究所 | Floating type sponge urban rain sewage treatment device and treatment method |
| CN117417098B (en) * | 2023-12-18 | 2024-02-27 | 水利部牧区水利科学研究所 | Floating type sponge urban rain sewage treatment device and treatment method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106869238B (en) | A kind of massif sponge city three-stage rainwater-collecting purification utilization system | |
| CN201276718Y (en) | Rainwater collecting and recycling system on building roofing | |
| CN109797830B (en) | Rain and sewage diversion device | |
| CN104372845B (en) | A kind of urban pavement Initial Runoff intercepting pollution for rainwater treating apparatus | |
| CN107816082A (en) | A kind of sponge roof rainwater collection reutilization system | |
| CN209686564U (en) | A kind of small sponge urban ecology rainwater storage cell system | |
| CN206233333U (en) | A kind of early-stage rainwater filtering, precipitation, abandoned stream and collection processing system implementing | |
| CN203475513U (en) | Full-automatic roof rainwater collecting and purifying device | |
| CN201554061U (en) | Building rainwater collection device | |
| CN202644644U (en) | Underground rain water collecting module | |
| CN201972229U (en) | Residential rainwater comprehensive utilization system device | |
| CN105350607A (en) | Urban rainwater collecting and recycling system | |
| CN108625453A (en) | Skyscraper sponge City complex system | |
| CN210104906U (en) | Rain and sewage flow dividing device | |
| CN105442668A (en) | Roof rainwater recycling system | |
| CN203741704U (en) | Rainwater collecting and recycling system for overpass | |
| CN106193186A (en) | A kind of residential block is combined rainwater management system | |
| CN213477836U (en) | Integrated urban and rural ecological service complex | |
| CN112593614A (en) | Sponge urban water system for building community | |
| CN211817483U (en) | Automatic rainwater shunting and filtering bucket for building | |
| CN211897679U (en) | Novel sponge urban road system | |
| CN214423518U (en) | Sponge urban water system for building community | |
| CN206110232U (en) | Community landscaping rainwater utilization device | |
| CN216552277U (en) | Porous hard type permeable pipe system embedded in concave green land | |
| CN212358883U (en) | Green roof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |