Safety diversion device and its rainwater recovery system and sewage return system

Abstract

The invention provides a safety flow splitting device. The safety flow splitting device comprises a liquid collection pipe, a liquid flow splitting pipe and a flow guide pipe, wherein a U-shaped pipe-shaped structure is formed by the liquid collection pipe, the liquid flow splitting pipe and the flow guide pipe; the liquid collection pipe is connected with a liquid inlet pipe; the liquid flow splitting pipe is connected with a liquid recycling pipe and a liquid discharging pipe; a pipe top elevation of the liquid inlet pipe is higher than the pipe top elevation of the liquid recycling pipe and a pipe bottom elevation of the liquid discharging pipe; the pipe top elevation of the liquid recycling pipe is lower than the pipe bottom elevation of the liquid discharging pipe; and an output end of the liquid recycling pipe is used for being connected with a liquid opening / closing device. The invention further provides a rainwater recycling system which comprises the safety flow splitting device; and the liquid inlet pipe, the liquid discharging pipe and the liquid recycling pipe are connected with a rainwater collection pipe net, a water discharging pipe net and a rainwater water storage tank respectively. The invention further provides a sewage reflowing system which comprises the safety flow splitting device; and the liquid inlet pipe and the liquid discharging pipe are connected with a water outlet of a biological treatment tank and an adjusting tank respectively. The safety flow splitting device can avoid impurity deposition and is convenient to maintain.

Description

technical field [0001] The invention relates to the technical field of liquid recovery and treatment, in particular to a safety diversion device and a rainwater recovery system and a sewage return system using the same. Background technique [0002] In recent years, with the decrease of global water resources, the effective use of rainwater has received extensive attention. However, due to the early stage of rainfall, the rainwater dissolved a large amount of polluting gases such as acid gas, automobile exhaust, and factory exhaust gas in the air. Rainwater has a high degree of pollution and is not suitable for recycling. [0003] In the specific engineering design, it is necessary to set up a safety diversion device between the rainwater collection pipe and the rainwater storage tank. The rainwater in the early stage is discharged first when it flows through the safety diversion device, and it is collected after the rainfall increases and the water quality improves. The ...

AI Technical Summary

Problems solved by technology

[0007] The first technical problem to be solved by the present invention is to provide a safety shunt device that can avoid the deposition of impurities and is easy to maintain, so as to overcome the problems that the existing safety shunt devices are easy to deposit impurities, need to be cleaned, and are inconvenient to maintain

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