WO2021165722A1 - Système et dispositif améliorés de récupération d'eau de pluie - Google Patents

Système et dispositif améliorés de récupération d'eau de pluie Download PDF

Info

Publication number
WO2021165722A1
WO2021165722A1 PCT/IB2020/051351 IB2020051351W WO2021165722A1 WO 2021165722 A1 WO2021165722 A1 WO 2021165722A1 IB 2020051351 W IB2020051351 W IB 2020051351W WO 2021165722 A1 WO2021165722 A1 WO 2021165722A1
Authority
WO
WIPO (PCT)
Prior art keywords
rainwater
compartment
flush
harvesting system
disposed
Prior art date
Application number
PCT/IB2020/051351
Other languages
English (en)
Inventor
Yock Kuan Tan
Original Assignee
Yock Kuan Tan
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 Yock Kuan Tan filed Critical Yock Kuan Tan
Priority to PCT/IB2020/051351 priority Critical patent/WO2021165722A1/fr
Publication of WO2021165722A1 publication Critical patent/WO2021165722A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
    • E03B3/02—Methods or installations for obtaining or collecting drinking water or tap water from rain-water
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B1/00—Methods or layout of installations for water supply
    • E03B1/04—Methods or layout of installations for water supply for domestic or like local supply
    • E03B1/041—Greywater supply systems
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B1/00—Methods or layout of installations for water supply
    • E03B1/04—Methods or layout of installations for water supply for domestic or like local supply
    • E03B1/041—Greywater supply systems
    • E03B1/042—Details thereof, e.g. valves or pumps
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B1/00—Methods or layout of installations for water supply
    • E03B1/04—Methods or layout of installations for water supply for domestic or like local supply
    • E03B1/041—Greywater supply systems
    • E03B1/042—Details thereof, e.g. valves or pumps
    • E03B1/044—Switch valves in waste pipes
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B1/00—Methods or layout of installations for water supply
    • E03B1/04—Methods or layout of installations for water supply for domestic or like local supply
    • E03B1/041—Greywater supply systems
    • E03B2001/047—Greywater supply systems using rainwater
    • 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
    • Y02A20/108—Rainwater harvesting

Definitions

  • the present invention relates generally to a rainwater harvesting system and device. It relates specifically to improvements made to a rainwater harvesting system and device including a rainwater drainage function, a debris cleansing function, a first flush function and a selectable time delay function to initiate clean rainwater collection for storage.
  • a prior art T-shaped first flush diverter device has been widely used in the rainwater harvesting systems. Such first flush diverter devices should be installed on each rainwater harvesting systems at various catchment areas.
  • the total first flush volume on each system shall comply with the local authority’s stipulations as based on yearly rainfall density on different location and climates. For an example, local authorities often apply a simple formula of 10 square meters (roof area) to 5 litres (flush volume).
  • the prior art T-shaped first flush diverter device comprises a horizontal piping and a vertical downpipe carrying a floating ball inside.
  • rainwater flows into the vertical downpipe and the floating ball rises to the top of the downpipe; the rainwater is next transferred horizontally through the horizontal piping connectable to a storage tank, while the first flush water is temporarily held in the downpipe.
  • the vertical downpipe has a very small outlet at its bottom, that allows the first flush rainwater to escape slowly over time. After it has stopped raining, the first flush downpipe will eventually empty itself and be ready for the next first flush during the next rainfall.
  • the bottom of the first flush downpipe can and should be removed from time to time to clean out any dirt or debris that is too large to escape through the small outlet.
  • a prior art debris filter is often installed before or after the prior art first flush diverter device.
  • One object of the present invention is to incorporate a drainage function, a debris cleansing function and a first flush function to a rainwater harvesting system and device.
  • Another object of the present invention is that the improved rainwater harvesting system and device operates by mechanisms only, whereas no pump is being employed.
  • Another object of the present invention is to temporarily hold the first flush volume and drain off excess rainwater, without the need for any extra first flush storage tanks.
  • the external inlet pipe is connectable to roof catchment areas with the assistance of traditional gutters.
  • a fixed debris cleansing plate fitted with one or more numbers of supplemental shallow gutter connected to a verticular top-up tube leading to a first flush activator compartment below.
  • a rainwater diversion tray which is tiltable towards an external outlet pipe connectable to a clean rainwater storage tank.
  • a floating arm body compartment At the bottom elevation position, a floating arm body compartment, a first flush activator compartment, and a drainage compartment, all adjacently disposed underneath the rainwater diversion tray.
  • the empty space therein the floating arm body compartment is in fluid communication with the first flush activator compartment via a communication hole.
  • a time delay wheel is employed to select and regulate the water flow rate between the two compartments, and different predetermined time delays can be selected.
  • a first flush drain hole is disposed on the bottom floor of the first flush activator compartment.
  • the first flush activator compartment is disposed therein with a floating tube equipped with a seesaw lifting arm fitted to its bottom.
  • the seesaw lifting arm is equipped with a drain cover to cover the drain hole:- When the floating tube moves downwards, the drain cover is clear off the first flush drain hole. Rainwater is allowed to be drained off freely.
  • the first flush activator compartment is disposed next to a drain compartment connectable to an external drain pipe.
  • rainwater with any debris such as dry leaves and small objects from the catchment is first filtered by a domed grating as fixed inside the rain gutter and connected before a rainwater inlet pipe.
  • Rainwater moves through a diffuser plates chassis carrying diffuser plates and next downwardly to the debris cleansing plate at next lower elevation.
  • excess rainwater with debris exits the system and device via the drain compartment leading to the drain pipe, and also the uncovered first flush drain hole of the first flush activator compartment.
  • a time delay wheel between the first flush activator compartment and the floating arm body compartment, provides a manipulative means to select a predetermined time delay to terminate this first flush function. Excess rainwater is allowed to move from the first flush activator compartment into the floating arm body compartment with a selected time delay.
  • the floating arm body in the floating arm body compartment also rises.
  • the rainwater diversion tray is tilted towards the external outlet pipe.
  • the first flush function is technically terminated and clean rainwater is collected into a storage tank for future re-cycle use.
  • Figure 1 illustrates the installation of the present invention to a rainwater catchment roof.
  • Figure 2a shows various components of the present invention in four elevation positions when the present invention is not operating under a clean rainwater collection situation.
  • Figure 2b shows the present invention under a clean rainwater collection situation.
  • Figure 3a illustrates a bottom perspective view of a diffuser plates chassis carrying diffuser plates, connectable to an external inlet pipe and rainwater catchment area.
  • Figure 3b shows a top perspective view of the chassis shown in Figure 3a.
  • Figure 4a illustrates a top perspective view of a debris cleansing plate mechanism.
  • Figure 4b illustrates an underside view of the debris cleansing plate fitted with two shallow gutters and two top-up tubes.
  • Figure 5a illustrates a top perspective view of a rainwater diversion tray disposed above a floating arm body compartment which is in fluid communication with a first flush activator compartment.
  • Figure 5b illustrates an underside view of the rainwater diversion tray.
  • Figure 6a illustrates a top perspective view of a first flush activator compartment with a floating tube mechanism fitted with a seesaw lifting arm and a drain cover for its first flush drain hole on the ground floor of the first flush activator compartment.
  • Figure 6b is a bottom perspective view of the first flush activator compartment shown in Figure 6a.
  • Figure 7a illustrates a top perspective view of a tiltable floating arm body inside a floating arm body compartment.
  • Figure 7b illustrates a bottom perspective view of the tiltable floating arm body shown in Figure 7a.
  • Figure 8a illustrates a perspective view of a time delay wheel.
  • Figure 8b illustrates a side view of the time delay wheel externally fitted to the wall of the floating arm body compartment partially shown.
  • various components of the present invention are disposed in four elevation positions of a box-like container, when a clean rainwater collection situation is invoked.
  • FIGS 3a and 3b illustrate how a debris cleansing function is achieved.
  • the diffuser plates chassis 2 carrying diffuser plates 22, 23, 24, connectable to the external inlet pipe 1 and rainwater catchment area 13.
  • the diffuser plates chassis 2 is substantially inverted U- shaped, with two side wall panels 21 and two open ends.
  • the second diffuser plate 23 and the third diffuser plate 24 are flat.
  • the top wall 25 is to be mounted onto the top ceiling of the box-like container.
  • the bases of the two side wall panels 21 are slightly tugged-in and bent to hold each diffuser plate 22, 23, 24 firmly in proper inclined angles and fixed positions.
  • it further comprises three detachable diffuser plates (first 22, second 23 and third 24) with perforated holes on these plates. The purpose of these diffuser plates are to reduce the rainwater impact pressure.
  • the first diffuser plate 22 is V-bent folded inwardly and faces the mouth of the inlet pipe 1. Either one of or both the second perforated diffuser plate 23 and the third perforated diffuser plate 24 can be omitted from the design of the rainwater harvesting system and device, if it is to collect rainwater from small catchment areas only.
  • FIGs 4a and 4b illustrate a debris cleansing plate 3 at the next lower elevation position.
  • the debris cleansing plate 3 is flanked between two side guides 31 with an exit end 35 which is slanting downwardly and leading to a rainwater diversion tray 4 at yet another lower elevation position.
  • the debris cleansing plate 3 carries perforated holes 34 or is made from others type of filter membrane. Depending on the cleanness requirements of the rainwater to be saved, the debris cleansing plate 3 serves to remove the debris carried by rainwater.
  • Rainwater diversion tray 4 A clean rainwater collection function is achieved after a debris cleansing and a first flush functions have been performed.
  • a rainwater diversion tray 4 is the key component that physically terminates the first flush function of the present invention and initiates clean rainwater collection for storage.
  • the rainwater diversion tray 4 is movable and becomes operational when this rainwater diversion tray 4 is urged to tilt towards an external outlet pipe 8.
  • the rainwater diversion tray 4 is essentially an open top U-shaped chute channel with two side guide walls 41. One end is open 43 whereas the other outlet end is also open 44 and has a lower lipped extension.
  • a detachable latch mechanism 42 is disposed underneath the chute channel towards the outlet opening 81. In its natural disposition, the chute channel is oriented such that the open end is tilted downwardly.
  • the rainwater diversion tray 4 becomes tiltable upwards or downwards, with the assistance of a pushing arm 64 fitted on top of a floating arm body 61 , when the diversion tray 4 has been raised.
  • Figure 6 illustrates a first flush activator compartment 5 with a floating tube 53 mechanism fitted with a seesaw lifting arm 55 and a drain cover 56 for its first flush drain hole 51 on the bottom floor of the first flush activator compartment 5.
  • the floating tube 53 is disposed inside the box casing 54.
  • the floating tube 53 is slidable mounted on a vertical wall section inside the first flush activator compartment 5.
  • the drain cover 56 is provided with a puncture 57 including a small hole or a groove. First flush rainwater temporarily retained will be continuously released and drained off.
  • the floating tube 53 rises, with the drain hole 51 covered. This happens particularly when there is a heavy rainfall and the drain hole 51 is unable to discharge all the rainwater fast enough. Any excess rainwater will eventually overflow into the drain compartment 71 leading to a drain pipe 7. Flowever, no rainwater is yet to be collected and stored at this stage. It is important to note that the size of the drain hole 51 is predetermined by design in accordance for different catchment area 13 and local rainfall density. A larger size caters for bigger catchment area 13 and higher rainfall density.
  • the preferred drain hole 51 is made with a bigger possible diameter, so that it can be adapted with a reducer means for reducing the size if rainfall density is changed in future.
  • a sloped cement block 52 is provided to ensure a smooth discharge of rainwater through the drain hole 51.
  • a compartment cover 59 covering the first flush activator compartment 5 is perforated. This arrangement helps to reduce the rainwater pressure to cause any instability to the floating tube 53. Retained rainwater will eventually be drained.
  • the first flush activator compartment 5 is in fluid communication with an adjacent floating arm body compartment 6.
  • the floor of the floating arm body compartment 6 is at a higher elevation position than the floor of the first flush activator compartment 5.
  • the floating arm body 61 is light and floatable. It maybe made with a built-in full size polystyrene cube inside for preventing water seepage/leakage which causes failure of the floating force.
  • the floating arm body 61 is hinged 62 to a vertical wall section near the outlet pipe 8.
  • a pushing arm 64 is disposed on its top side furthest from the hinge 62. The pushing arm 64 urges the rainwater diversion tray 4 to tilt towards the outlet pipe 8. This tilted position will technically terminate the first flush function and to initiate clean rainwater storage for recycle use.
  • a sloped cement block 52 is employed in the first flush activator compartment 5 to provide a smooth discharge of rainwater ultimately towards the drain hole 51.
  • a sloped cement block 691 is employed in the floating arm body compartment 6 to provide a smooth discharge of rainwater ultimately towards the drain hole 51 in the first flush activator compartment 5.
  • the present invention also teaches how to implement a selectable time delay function to initiate clean rainwater collection.
  • Figure 8 illustrates a selectable time delay wheel 67 manipulating the rainwater flow rate through the fluid communication hole 66 between the first flush activator compartment 5 and the floating arm body compartment 6.
  • a first bolt and nut arrangement 63 is employed to pass through an axially central locking hole 671 of the selectable time delay wheel 67, so that the circular wheel 67 is mounted onto the outside wall of the floating arm body compartment 6.
  • another bolt and nut arrangement 65 is employed to pass through one selected indication screw hole from four indication screw holes 672a, 672b, 672c, 672d equi-distancedly provided on the imaginary larger circumference of the wheel 67.
  • indication screw holes 672a, 672b, 672c, 672d Diametrically opposite the four indication screw holes 672 on the wheel 67, there are provided correspondingly in pairs four flow rate controlling holes 673a, 673b, 673c, 673d.
  • These controlling holes 673 are of different diameters and are calibrated for different time delays (to fill up the empty space inside the floating arm body compartment 6), and to urge the above mentioned rainwater diversion tray 4 upwards.
  • controlling hole 673 facilitates a faster rate of filling up and consequently the first flush volume will be lesser.
  • a controlling hole 673 of smaller diameter prolongs the time delay duration and the first flush volume is increased.
  • all the controlling holes 673a, 673b, 673c, 673d are edge-to-edge in close contact with the fluid communication hole 66, so that rainwater can freely enter or drain out without any blockage.
  • a water-tight medium 68 including a rubber ring seal or gasket can be placed between the wheel 67 and the outside wall of the floating arm body compartment 6.

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Sewage (AREA)

Abstract

La présente invention contient divers composants disposés au niveau de quatre positions d'élévation à l'intérieur d'un récipient en forme de boîte. Ils peuvent être reliés à un tuyau d'entrée (1), à un tuyau d'évacuation (7) et à un tuyau de sortie (8). Ils coopèrent également en tant que mécanisme pour obtenir une fonction de nettoyage de débris, une première fonction de rinçage, une fonction d'évacuation et une fonction de temporisation sélectionnable pour démarrer la récupération d'eau de pluie propre.
PCT/IB2020/051351 2020-02-19 2020-02-19 Système et dispositif améliorés de récupération d'eau de pluie WO2021165722A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/IB2020/051351 WO2021165722A1 (fr) 2020-02-19 2020-02-19 Système et dispositif améliorés de récupération d'eau de pluie

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2020/051351 WO2021165722A1 (fr) 2020-02-19 2020-02-19 Système et dispositif améliorés de récupération d'eau de pluie

Publications (1)

Publication Number Publication Date
WO2021165722A1 true WO2021165722A1 (fr) 2021-08-26

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PCT/IB2020/051351 WO2021165722A1 (fr) 2020-02-19 2020-02-19 Système et dispositif améliorés de récupération d'eau de pluie

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113607925A (zh) * 2021-09-30 2021-11-05 四川省公路规划勘察设计研究院有限公司 可调控成灾因素的泥石流模拟试验装置
CN115171369A (zh) * 2022-06-09 2022-10-11 浙大城市学院 一种基于智慧交通的停车管理指挥系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3022186A1 (de) * 1980-06-13 1981-12-24 Karl 8821 Aufkirchen Burger Vorrichtung zum einstellen einer leitklappe in einem zeitweise wasser, insbesondere regenwasser, fuehrenden fallrohr
AU581211B2 (en) * 1984-03-21 1989-02-16 Kelvin G. Anderson Device for automatically collecting clean rain water after discarding the unclean water
WO2001000937A1 (fr) * 1999-06-25 2001-01-04 Enviroflo Systems Ltd Clapet/filtre de derivation et filtre de tuyau de descente
US10106971B2 (en) * 2017-02-15 2018-10-23 Arturo J. Villanueva Tilt diverter to control storm-water

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3022186A1 (de) * 1980-06-13 1981-12-24 Karl 8821 Aufkirchen Burger Vorrichtung zum einstellen einer leitklappe in einem zeitweise wasser, insbesondere regenwasser, fuehrenden fallrohr
AU581211B2 (en) * 1984-03-21 1989-02-16 Kelvin G. Anderson Device for automatically collecting clean rain water after discarding the unclean water
WO2001000937A1 (fr) * 1999-06-25 2001-01-04 Enviroflo Systems Ltd Clapet/filtre de derivation et filtre de tuyau de descente
US10106971B2 (en) * 2017-02-15 2018-10-23 Arturo J. Villanueva Tilt diverter to control storm-water

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113607925A (zh) * 2021-09-30 2021-11-05 四川省公路规划勘察设计研究院有限公司 可调控成灾因素的泥石流模拟试验装置
CN115171369A (zh) * 2022-06-09 2022-10-11 浙大城市学院 一种基于智慧交通的停车管理指挥系统
CN115171369B (zh) * 2022-06-09 2023-10-20 浙大城市学院 一种基于智慧交通的停车管理指挥系统

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