greywater supply system

By installing pressure sensors and automatic valves to control backflow in the reclaimed water supply system, combined with parallel pump branches and ultraviolet disinfection, the problem of unstable water pressure at water points was solved, achieving stable operation of the water supply system and water quality safety.

CN224281428UActive Publication Date: 2026-05-26SUZHOU XINGONG ENVIRONMENTAL ENG TECH CO LTD
View PDF 1 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SUZHOU XINGONG ENVIRONMENTAL ENG TECH CO LTD
Filing Date
2025-05-28
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

In existing greywater supply systems, simultaneous use of water at multiple points can affect water pressure, especially during backflow, impacting the stability of the supply pressure.

Method used

Pressure sensors and automatic valves are installed in the water supply pipeline to detect water demand and control the opening and closing of the return pipeline to ensure stable water supply pressure; parallel pump branches ensure normal system operation; ultraviolet sterilizers ensure water quality safety; and aeration pipes clean the inner wall of the pipes to prevent bacterial growth.

Benefits of technology

It effectively maintains stable water pressure at water points, ensures the normal operation of the water supply system, prevents backflow, guarantees water quality safety, cleans the inner walls of pipes, and improves system reliability.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224281428U_ABST
    Figure CN224281428U_ABST
Patent Text Reader

Abstract

This utility model discloses a greywater supply system, including a water storage tank. The inlet of the water storage tank is connected to an inlet pipe, and the outlet of the water storage tank is connected to a supply pipe and a return pipe. The supply pipe includes a first automatic valve, a controllable check valve, and a pressure sensor, arranged sequentially downstream of the connection point of the supply and return pipes. The return pipe includes a second automatic valve, located downstream of the connection point of the supply and return pipes. The supply pipe connects to a water usage point, and the return pipe connects to the return port of the water storage tank. This utility model, by installing a pressure sensor and a first automatic valve on the supply pipe and a second automatic valve on the return pipe, allows the pressure sensor to detect water demand. When water demand is present, the second automatic valve can shut off the return pipe, thus preventing water from flowing back through the return pipe and affecting the supply pressure of the supply pipe, effectively ensuring the water pressure at the water usage point.
Need to check novelty before this filing date? Find Prior Art