The invention discloses a flow discarding and
flow diversion device and its work method, particularly relates to a flow discarding and
flow diversion device of a rainwater down
pipe and a flow discarding and
flow diversion method, and belongs to the technical field of
urban water supply and drainage. The device includes a box body having a water collecting chamber, the water collecting chamber is internally provided with a float ball chamber, the box body is further provided with the rainwater down
pipe from which rainwater enters, the lower end portion of the rainwater down
pipe is provided with a water segregator, the water segregator introduces one part of liquid into the float ball chamber, the other part of liquid enters the water collecting chamber, the box body is provided with a first water outlet, the water collecting chamber and a liquid channel of the first water outlet are provided with float ball valves, float balls of the float ball valves are located in the float ball chamber, the box body is further provided with a second water outlet, when the liquid channel of the first water outlet is closed, liquid overflows to the second water outlet and is discharged, and the lower portion of the float ball chamber is provided with a liquid
discharge hole used for water drainage. According to the device and the method, the early flow discarding and flow diversion problems of the
earth surface, buildings and structures are solved,
water resources are made full use of, and the practicability is higher.