CN206368417U - A kind of rainwater-collecting processing and utilizing system of power plant - Google Patents
A kind of rainwater-collecting processing and utilizing system of power plant Download PDFInfo
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- CN206368417U CN206368417U CN201621416884.XU CN201621416884U CN206368417U CN 206368417 U CN206368417 U CN 206368417U CN 201621416884 U CN201621416884 U CN 201621416884U CN 206368417 U CN206368417 U CN 206368417U
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- tank
- rainwater
- valve
- power plant
- collecting
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
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Abstract
The utility model discloses a kind of rainwater-collecting processing and utilizing system of power plant, including roof drain, collection rain down-comer, rainwater-collecting pipeline, coarse filter, fine filtering pond, sedimentation basin, tank, chemicals dosing plant, the ditch of catchmenting for collecting rainwater on road and green land.Ditch of catchmenting is arranged on by road both sides and green land, and catchment ditch connection rainwater-collecting pipeline, is provided with tank at the top of water-level gauge, overflow mechanism and agitating device, tank and is provided with exhaust apparatus, tank bottom is connected with blowdown apparatus.The utility model can be relatively easy to collect surface rain, make full use of the precipitation of plant area of power plant, system constitutes simple, reliability is high, reduced investment, instant effect, save resource, the pressure of extraneous drainage system is alleviated, and avoids soil erosion to a certain extent, the danger that may occur in tank because putting aside biogas is prevented.
Description
Technical field
The utility model belongs to collecting water re-use technology field, it is adaptable to the rain of the integrated mill such as power-generating enterprise
Water is collected processing and utilized, it can also be used to general cell, school, public institution etc..
Background technology
China is located at Pacific Ocean west bank, vast in territory, with a varied topography, continental monsoon climate highly significant, thus causes
Uneven and changing course the two major features of water resource Area distribution.Precipitation from southeastern coast, northwestwards successively decrease by inland.Using coal as
Main generation mode is still the main generation mode that China uses at this stage.And Mei electricity enterprises are more because of reasons such as coal resource distributions
The region of northern rich coal drought is distributed in, many Winter-Springs of precipitation summer and autumn are few.Produce water rate turns into a larger expenditure.
When heavy showers occurs, plant area of power plant is not enough because of its own water-holding capacity, and a large amount of precipitation are directly discharged into drainage channel and flowed away, not only make
Into the wasting of resources, soil erosion is also exacerbated to a certain extent.Rainwater has the advantages that hardness is low, pollutant is few.Can root
According to actual demand, by rainwater-collecting treatment and purification, recirculated cooling water can be used as（Water turbidity there are certain requirements）, it is fire water, green
The purposes such as change water.Therefore, it is to economize on resources, reduce loss, alleviate production use that power plant's rain in factory area, which collects processing and utilizing system,
One important method of water pressure.
In the prior art, the Chinese utility model of Application No. 201120516660.7 discloses a kind of rainwater-collecting and place
Reason system, including rainwater collection pool, one-level lift pump, buffering regulating reservoir, processing equipment and clear water reserviors, wherein in rainwater collection pool
Diving mixer is set.Buffer regulating reservoir to design by flat flow, bottom of pond has bottom ramp.The bottom of buffering regulating reservoir, which is set, scrapes
Mud machine, water side set sand setting area, and sand setting area side wall sets sludge pump.Clear water reserviors set overflow electrically operated valve.Processing equipment bag
Include two grades of lift pumps, coagulation reaction tank and efficient sedimentation tank.The Chinese utility model of Application No. 201620285074.9 is disclosed
A kind of rainwater of collecting is used for the device of Agricultural Water drip irrigation, including device for collecting rain water, collecting-tank, screen pack, water pipe, filtering ponds,
Sediment processing mechanism, mixing chamber, agitating shaft, agitating paddle, motor, liquid manure room, flowmeter, water pump, inner tube, outer tube, nozzle, too
Positive energy device and wind generator.Above prior art, can further be improved.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of rainwater-collecting processing and utilizing system of power plant,
It more can readily collect ground rainwater.
The technical solution of the utility model is：A kind of rainwater-collecting processing and utilizing system of power plant, including roof drain, company
The collection rain down-comer of roof drain, connection is connect to collect the rainwater-collecting pipeline of rain down-comer, the coarse filter for connecting rainwater-collecting pipeline, connect
Connect the fine filtering pond of coarse filter, the sedimentation basin in connection fine filtering pond, the tank for connecting sedimentation basin, the chemicals dosing plant for connecting tank,
Ditch of catchmenting for collecting rainwater on road and green land.The ditch of catchmenting is arranged on by road both sides and green land, collection
Water ditch, which is connected, to be provided with rainwater-collecting pipeline, the tank at the top of water-level gauge, overflow mechanism and agitating device, tank
Exhaust apparatus is installed, tank bottom is connected with blowdown apparatus.
Pavement of road builds up the lower slightly shape in middle slightly higher, both sides, and the finishing of green land ground turns into slightly to the ditch side that catchments
To inclined inclined-plane, ground is less than the neighbouring ditch one side ground 7cm-10cm that catchments of green land on both sides of the road in road；The roof drain, collection
Rain down-comer is installed on Power Plant Buildings thing.
The overflow mechanism is including the overflow downcomer being arranged in tank, the overflow pipe of connection overflow downcomer and installed in overflow
Overflow valve on pipe.
The blowdown apparatus includes blow-off pipe and the dredge pump of tank is connected by blow-off pipe.
The agitating device includes agitating shaft, connects stirring motor, the paddle installed in agitating shaft lower end of agitating shaft
Piece and the cleaning hairbrush being connected to below stirring vane, cleaning hairbrush are in contact with tank inner bottom surface.
Passage is provided with the top of the tank, exhaust apparatus includes being arranged on the scavenger fan at passage.
The rainwater-collecting processing and utilizing system of the power plant also include control device, the water-level gauge, overflow mechanism, plus
Medicine device, agitating device, blowdown apparatus, exhaust apparatus are all connected with control device.
The rainwater-collecting processing and utilizing system of the power plant also includes the discharging device of connection tank, discharging device bag
Include and the lift pump of tank, the outlet main pipe for connecting lift pump, the outlet main valve in outlet main pipe are connected by water pipe
It is mounted on exporting sub-valve on some distributive pipes of door and connection outlet main pipe, every distributive pipe；Export total valve and go out
Mouth sub-valve is motor-driven valve, and the lift pump, outlet total valve and outlet sub-valve are all connected with control device.
The chemicals dosing plant includes recirculation pipe, the recycle valve on recirculation pipe, dosing pump；Recirculation pipe
One end is connected in the outlet main pipe between lift pump and outlet total valve, the other end is inserted in tank, and dosing pump passes through
Pipeline connects recirculation pipe and tie point is located between recycle valve and the recirculation pipe other end；Recycle valve is motor-driven valve, institute
State recycle valve, dosing pump and be all connected with control device.
The tank includes tank pond body and header field, and tank pond body top is cylindrical, bottom is rounding
Cone-shaped；The detection sensor for detecting rainwater turbidity in tank, detection sensor connection control are additionally provided with tank
Device processed；Tank connects sedimentation basin, intake pump connection control device by pipeline and intake pump.
The utility model can be relatively easy to collect surface rain, make full use of the precipitation of plant area of power plant, and system constitutes letter
Single, reliability is high, reduced investment, instant effect, and the rainwater after processing can be used for supplement plant area industrial water（Such as recirculated cooling water）,
Fire demand water and greening water.Using the utility model, resource is saved, the pressure of extraneous drainage system is alleviated, and one
Determine to avoid soil erosion in degree.Biogas may be put aside in tank, is caused danger, the utility model is vented by setting
Device and passage, make the fuel gas such as the methane of generation be emitted into the external world, and by setting detection means to monitor storage in time
Rainwater turbidity in pond.
Brief description of the drawings
Fig. 1 is the connection diagram of the rainwater-collecting processing and utilizing system of the utility model power plant；
Fig. 2 is road, green land and the diagrammatic cross-section in ditch of catchmenting in the utility model；
Fig. 3 is the schematic diagram that tank in the utility model and installation are connected to the part on tank；
In figure：1st, roof drain, 2, collection rain down-comer, 3, rainwater-collecting pipeline, 4, ditch of catchmenting, 5, road, 6, green land,
7th, coarse filter, 8, fine filtering pond, 9, sedimentation basin, 10, tank, 11, building, 12, dosing pump, 13, recycle valve, 14, outlet
Total valve, 15, outlet main pipe, 16, stirring motor, 17, lift pump, 18, overflow downcomer, 19, tank pond body, 20, overflow valve,
21st, agitating shaft, 22, blow-off pipe, 23, dredge pump, 24, stirring vane, 25, intake pump, 26, water-level gauge, 27, scavenger fan.
Embodiment
Refer to Fig. 1 to Fig. 3, a kind of rainwater-collecting processing and utilizing system of power plant, including control device, installed in electricity
Roof drain 1, the collection rain down-comer 2 of connection roof drain, rainwater-collecting pipeline 3, the collection of connection collection rain down-comer on factory's building 11
Water ditch 4（It is arranged on by the both sides of road 5 and green land 6）, connection rainwater-collecting pipeline coarse filter 7, by pipeline connect thick
The fine filtering pond 8 in filter tank, the sedimentation basin 9 by pipeline connection fine filtering pond（It is preferential to use ramp type sedimentation basin）, connected by pipeline
The tank 10 of sedimentation basin, the chemicals dosing plant for connecting tank and the discharging device for connecting tank.Installed on the tank
Have and exhaust apparatus is installed at the top of water-level gauge 26, overflow mechanism and agitating device, tank, tank bottom is connected with blowdown dress
Put.
During rainfall, the rainwater that building is accepted enters roof drain, enters rainwater-collecting pipeline through rainwater down-comer, same with this
When, the surface water of the rainfall of road ground surface and both sides of the road green land, two are accepted in the ditch of catchmenting by both sides of the road and green land
Road rainwater passes through rainwater-collecting pipeline jointly, by the gradient of rainwater-collecting pipeline（In advance relevant device is arranged to be easy to water
The gradient of flowing）, coarse filter, fine filtering pond are flowed through successively, thickness impurity is filtered out, and into ramp type sedimentation basin, are removed and are contained in rainwater
The impurity such as some dust, finally enter tank and store.Rainwater after processing can be used for supplement plant area industrial water, fire-fighting
With water and greening water.Rainwater in tank adds algicide through chemicals dosing plant, when tank normally outwardly supplies water, and opens
Lift pump and its front and rear valve, close recycle valve, lift pump is opened on demand water is delivered into each system point door.When water level is too high
And when needing top layer blowdown, open overflow valve and carry out emission treatment.When tank impurities at bottom is more to carry out desilting blowdown,
Start agitating device slowly to rotate.Dredge pump and its front and rear butterfly valve are opened simultaneously, carry out desilting blowdown.
Tank includes tank pond body 19 and header field, and tank pond body top is cylindrical, bottom is inverted cone
The bodily form.Tank can connect sedimentation basin, intake pump connection control device by pipeline and intake pump 25.
Slightly higher in the middle of road, both sides are lower slightly, and green land ground is to the inclined inclined-plane in ditch direction that catchments.Road is on both sides of the road
Face catchment ditch one side ground 7cm-10cm neighbouring less than green land, road is built ditch of catchmenting with green land connection, catchmented
Ditch is connected to rainwater-collecting pipeline.Ground precipitation is collected with hardening road（Greenery patches precipitation, road precipitation and other earth's surfaces drop
Water）, solve surface rain not easily collecting the problem of.Using thickness double-filtration（Coarse filter and fine filtering pond）, remove in rainwater
Branch leaf, the big stone contained, ramp type sedimentation basin can effectively remove the silt contained in rainwater, so as to solve rain
The problem of water contains the impurity such as more dust branch leaf.
Overflow mechanism includes overflow downcomer 18, connects the overflow pipe and the overflow valve 20 on overflow pipe of overflow downcomer（Adopt
With the motor-driven valve that can be automatically controlled）.Overflow downcomer is arranged in tank close to tip position, and overflow pipe is arranged on tank pond body
On, overflow valve is located on the outside of tank pond body.Rainfall excessively may cause water storage pool water level too high, at this moment open overflow valve, lead to
Overflow mechanism draining is crossed, dredge pump can be also opened, excessive rainfall is discharged into by underground pipe network by blowdown apparatus.
Blowdown apparatus includes blow-off pipe 22 and dredge pump 23, and dredge pump passes through blow-off pipe and sewage draining valve（It is automatic using energy
The motor-driven valve of control）It is connected to tank bottom.Agitating device includes agitating shaft 21, the stirring motor 16 for connecting agitating shaft, peace
Stirring vane 24 and the cleaning hairbrush being connected to below stirring vane mounted in agitating shaft lower end, cleaning hairbrush and bottom in tank
Face is in contact, and is easy to clean up bottom of pond during desilting.If stirring vane has dry plate, it is distributed global shape and inversed-cone shape
Tank pond body bottom is engaged.Agitating shaft is stretched into tank pond body and its top is movably arranged on tank header field,
Stirring motor is arranged on above tank header field.Silt in tank can be deposited on tank bottom, set blowdown to fill
Put and agitating device, can start when there is silting agitating device, open sewage draining valve, open dredge pump import butterfly valve and
Exit butterfly valve, starts dredge pump, carries out sewage treatment.
Exhaust apparatus includes being provided with as needed at the top of the discharge duct of scavenger fan 27 and connection scavenger fan, tank
Some passages, respectively install a scavenger fan at partial ventilation hole.Biogas may be put aside in tank, is caused danger,
Exhaust apparatus and passage are set, the fuel gas such as the methane of generation is emitted into the external world, prevents to put aside in tank
Biogas and the danger occurred.
Because electric power plant circulating water water quality has the requirement to turbidity, turbidity is qualified can to squeeze into water standby in circulating water pool.
The detection means for detecting rainwater turbidity in tank can be added on tank, detection means includes detector, detector
Including detection sensor and for showing the turbidimeter of detected value, detection sensor is stretched into tank（Storage can be arranged close to
Basin bottom position）, rainwater turbidity in tank is detected, then numerical value is shown by turbidimeter, turbidimeter is arranged on tank
Outside, detection sensor is connected with control device.An alarm being connected with control device separately can be set by control device, is detected
The signal detected is issued control device by sensor, when rainwater turbidity is unqualified in tank, and control device starts alarm
Device sends alarm signal and reminds staff to take measures to make rainwater turbidity in tank to reach Eligibility requirements in time.
Discharging device includes connecting the lift pump 17 of tank, the outlet main pipe 15 for connecting lift pump by water pipe, installed
Some distributive pipes of outlet total valve 14 and connection outlet main pipe in outlet main pipe, distributive pipe connects recirculated water respectively
Pond, fire cistern, greening pond etc., for supplementing plant area's industrial water, fire demand water and greening water etc..On every distributive pipe
It is mounted on exporting sub-valve；It is motor-driven valve to export total valve and outlet sub-valve.Although have passed through filtering and precipitate, water lift
Pump is also possible to be drawn into the rainwater containing impurity, endangers the operation of lift pump, can be set in rainwater lift pump porch into
Mouth filter screen, it is to avoid impurity enters in lift pump.
Chemicals dosing plant includes recirculation pipe, the recycle valve 13 on recirculation pipe, dosing pump 12；Recirculation pipe
One end is connected in the outlet main pipe between lift pump and outlet total valve, the other end is inserted in tank, and the one of dosing pump
End connects recirculation pipe by pipeline and tie point is located between recycle valve and the recirculation pipe other end, the other end of dosing pump
The container for having liquid medicine especially is connected by pipeline；Recycle valve uses motor-driven valve.Rainwater prolonged static possibility in tank
Algae can be grown, algicide is added in tank by chemicals dosing plant, so as to prevent the growth of algae.
The rainwater-collecting processing and utilizing system of whole power plant can carry out centralized Control by control device.Dosing pump 12,
Recycle valve 13, outlet total valve 14, outlet sub-valve, stirring motor 16, lift pump 17, overflow valve 20, dredge pump 23, blowdown
Valve, water-level gauge 26, scavenger fan 27 are all connected with control device, need valve to be mounted to be also connected with control device elsewhere
Connect, the motor-driven valve that all uses of all valves can be automatically controlled.Control device can be controlled using general electrical control gear, PLC
Device or other suitable control devices.Between two ponds of arbitrary neighborhood in coarse filter, fine filtering pond, sedimentation basin, tank, also may be used
To add water pump equal power device, such as：Tank can connect sedimentation basin, intake pump connection control dress by pipeline and intake pump
Put, other power set are also all connected with control device.
The characteristics of rainwater-collecting processing and utilizing system of the utility model power plant, is as follows：1st, the system is received to greatest extent
The precipitation that Ji Liao plant areas accept；2nd, natural gravity has been maximally utilised poor, can have been made by pre-setting layout in pipeline
Rainwater relies on slope Action of Gravity Field, passes sequentially through coarse filter, fine filtering pond, sedimentation basin, finally reaches tank；Therefore, coarse filter,
Between adjacent two ponds in fine filtering pond, sedimentation basin, tank, water pump equal power device no longer can also be separately set, energy has been saved
Source；3rd, coarse filter, fine filtering pond are respectively adopted coarse strainer, fie screen, coarse strainer, fie screen and ramp type sedimentation basin it is simple in construction,
Cheap, investment is low, cleaning is convenient；4th, tank cannot be only used for storing rainwater, it may also be used for collect all kinds of by processing
Sewage afterwards, accomplishes that a pond is used；5th, the system specially can plan construction in power plant's planning and designing, also be available for old factory using now
There is transformation of facility construction；6th, remarkable in economical benefits.
Preferred embodiment of the present utility model is the foregoing is only, the utility model is not limited to, for this
For the technical staff in field, the utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle
Within, any modification, equivalent substitution and improvements made etc. are all contained within protection domain of the present utility model.
Claims (10)
1. a kind of rainwater-collecting processing and utilizing system of power plant, including roof drain, the collection rain down-comer for connecting roof drain, connection
Rainwater-collecting pipeline, the coarse filter for connecting rainwater-collecting pipeline, the fine filtering pond for connecting coarse filter, the connection fine filtering for collecting rain down-comer
The sedimentation basin in pond, the tank for connecting sedimentation basin, the chemicals dosing plant for connecting tank, it is characterized in that, in addition to for collecting
The ditch of catchmenting of rainwater on road and green land, the ditch of catchmenting is arranged on by road both sides and green land, ditch connection of catchmenting
It is provided with rainwater-collecting pipeline, the tank at the top of water-level gauge, overflow mechanism and agitating device, tank and exhaust is installed
Device, tank bottom is connected with blowdown apparatus.
2. the rainwater-collecting processing and utilizing system of power plant according to claim 1, it is characterized in that, high in the middle of the road,
Both sides are low, and green land ground is that, to the inclined inclined-plane in ditch direction that catchments, ground is less than the neighbouring water that catchments of green land on both sides of the road in road
Ditch one side ground 7cm-10cm；The roof drain, collection rain down-comer are installed on Power Plant Buildings thing.
3. the rainwater-collecting processing and utilizing system of power plant according to claim 1, it is characterized in that, the overflow mechanism includes
It is arranged on overflow downcomer, the overflow pipe of connection overflow downcomer and the overflow valve on overflow pipe in tank.
4. the rainwater-collecting processing and utilizing system of power plant according to claim 1, it is characterized in that, the blowdown apparatus includes
Blow-off pipe and the dredge pump that tank is connected by blow-off pipe.
5. the rainwater-collecting processing and utilizing system of power plant according to claim 1, it is characterized in that, the agitating device includes
Agitating shaft, connect the stirring motor of agitating shaft, the stirring vane installed in agitating shaft lower end and be connected to below stirring vane
Hairbrush is cleaned, cleaning hairbrush is in contact with tank inner bottom surface.
6. the rainwater-collecting processing and utilizing system of power plant according to claim 1, it is characterized in that, set at the top of the tank
There is passage, exhaust apparatus includes being arranged on the scavenger fan at passage.
7. the rainwater-collecting processing and utilizing system of power plant according to claim 1, it is characterized in that, in addition to control device,
The water-level gauge, overflow mechanism, chemicals dosing plant, agitating device, blowdown apparatus, exhaust apparatus are all connected with control device.
8. the rainwater-collecting processing and utilizing system of power plant according to claim 7, it is characterized in that, in addition to connection tank
Discharging device, discharging device include by water pipe connect tank lift pump, connection lift pump outlet main pipe, be arranged on
Export and be mounted on outlet point on the outlet total valve in main pipe and some distributive pipes of connection outlet main pipe, every distributive pipe
Valve；It is motor-driven valve to export total valve and outlet sub-valve, and the lift pump, outlet total valve and outlet sub-valve are all connected with
Control device.
9. the rainwater-collecting processing and utilizing system of power plant according to claim 8, it is characterized in that, the chemicals dosing plant includes
Recirculation pipe, the recycle valve on recirculation pipe, dosing pump；One end of recirculation pipe is connected to lift pump and outlet is total
In outlet main pipe between valve, the other end be inserted in tank, dosing pump passes through pipeline and connects recirculation pipe and tie point
Between recycle valve and the recirculation pipe other end；Recycle valve is motor-driven valve, and the recycle valve, dosing pump are all connected with control
Device processed.
10. the rainwater-collecting processing and utilizing system of power plant according to claim 7, it is characterized in that, the tank includes
Tank pond body and header field, tank pond body top is cylindrical, bottom is inversed-cone shape；It is additionally provided with tank
Detection sensor for detecting rainwater turbidity in tank, detection sensor connection control device；Tank by pipeline and
Intake pump connects sedimentation basin, intake pump connection control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621416884.XU CN206368417U (en) | 2016-12-22 | 2016-12-22 | A kind of rainwater-collecting processing and utilizing system of power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621416884.XU CN206368417U (en) | 2016-12-22 | 2016-12-22 | A kind of rainwater-collecting processing and utilizing system of power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206368417U true CN206368417U (en) | 2017-08-01 |
Family
ID=59393958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621416884.XU Expired - Fee Related CN206368417U (en) | 2016-12-22 | 2016-12-22 | A kind of rainwater-collecting processing and utilizing system of power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206368417U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110999761A (en) * | 2019-12-21 | 2020-04-14 | 广东恒基隆建设有限公司 | Municipal works greenbelt irrigation system |
| CN111549855A (en) * | 2020-06-17 | 2020-08-18 | 中国建筑第七工程局有限公司 | House building rainwater collection and treatment device |
-
2016
- 2016-12-22 CN CN201621416884.XU patent/CN206368417U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110999761A (en) * | 2019-12-21 | 2020-04-14 | 广东恒基隆建设有限公司 | Municipal works greenbelt irrigation system |
| CN110999761B (en) * | 2019-12-21 | 2021-07-06 | 广东恒基隆建设有限公司 | Municipal works greenbelt irrigation system |
| CN111549855A (en) * | 2020-06-17 | 2020-08-18 | 中国建筑第七工程局有限公司 | House building rainwater collection and treatment device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170801 Termination date: 20171222 |
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| CF01 | Termination of patent right due to non-payment of annual fee |