Rainwater split-flow type drainage device

The utility model discloses a rainwater shunting type discharge device, which relates to the technical field of rainwater shunting and comprises an underground box body and a permeation chamber, the box body is divided into a first cavity and a second cavity through a separator, the rainwater shunting type discharge device further comprises a driving part, the driving part comprises a transmission shaft and blades, the transmission shaft is rotatably connected to the separator, and the blades are arranged in the transmission shaft. The blades are fixedly installed outside the transmission shaft, the blades are annularly distributed in the radial direction of the transmission shaft, a water inlet pipe is fixedly installed at the top of the box body, and the water inlet pipe is arranged above the blades; the rainwater filtering device has the beneficial effects that rainwater is introduced into the filter cartridge, flows out of the filter cartridge and is discharged into the permeation chamber, impurities are