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Dual water supply system

a water supply system and dual technology, applied in the field of sustainable water supply systems, can solve the problems of complex and relatively expensive arrangement of patent 741136, mechanical arrangement,

Inactive Publication Date: 2005-10-06
WADE RODNEY GEORGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The present invention provides a dual water supply system for tanks that minimizes the disadvantages of previous systems. The system includes a valve and a pipe to introduce water from a mains supply through an opening into the tank. The valve is responsive to the level of water in the tank to operate the valve if the level of water in the tank drops below a predetermined level. The pipe may be a stand pipe or extend in a generally horizontal direction. The valve is preferably a float controllable valve that is responsive to changes in the water level in the tank. The system ensures that there is no possibility of backflow of water from the tank into the mains supply. The tank provided with the dual water supply system in accordance with the present invention is also provided."

Problems solved by technology

The arrangement of patent 741136 is a mechanical one and is complex and relatively expensive.

Method used

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Examples

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Embodiment Construction

[0020]FIG. 1 shows a plan view of a storage tank 10 having a dual water supply system of an embodiment of the invention. The lid 11 of the storage tank 10 has an opening in it relative to which is fitted a screen 12 which is adapted to filter vectors and myriad of various types of undesirable particles of rubbish from the water entering the storage tank. Rainwater harvested from a catchment area may be directed onto the screen 12 so that it may enter the tank. The screen is identified generally by the numeral 12. Typically, the screen has apertures of the order of 955 microns.

[0021] The tank 10 is provided with a vented vector proof overflow valve 13. The overflow valve 13 functions to ensure that when the tank is overfilled, excess water is allowed to drain from the tank 10.

[0022] As shown in FIG. 2, the tank 10 has various zones within it. These zones are identified by levels 1, 2, 3 and 4 within the tank. Level 4 denotes the maximum level to which water is normally contained wi...

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Abstract

A dual water supply system for allowing a water storage tank to be supplied with water harvested from a rainwater catchment area and from a mains supply of water is disclosed. The system includes a valve being coupled to a mains supply of water. The valve is responsive to the level of water within the tank to operate the valve if the level of water in the tank drops below a predetermined level and a pipe to introduce water from the mains supply through an opening into the tank whereby an outlet from the pipe is spaced from the top of the tank and is visible externally of the tank.

Description

BACKGROUND OF THE INVENTION [0001] This invention relates to sustainable water supply systems for urban buildings and is particularly concerned with water storage tanks for use in such systems. [0002] The invention is an improvement of the systems disclosed in Australian patents 741136 and 750508. DESCRIPTION OF THE PRIOR ART [0003] In patent 750508, a water storage tank is disclosed which is connected to a town water supply and a domestic mains water supply. Valve means regulate the supply of town or mains water to the tank when the water level within the tank falls below a first pre-determined level and rises to a second pre-determined level. In this patent a dual float valve is located adjacent a lower portion of the tank and a float is used to regulate the introduction of town water into the tank dependent upon the level of the water within the tank. The introduction of town water into the tank occurs automatically and is not visible externally of the tank. [0004] Patent 741136 ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A47K4/00E03B3/03E03C1/01
CPCE03B3/03Y02A20/00Y02A20/108
Inventor WADE, RODNEY GEORGE
Owner WADE RODNEY GEORGE