Sponge city drainage device for civil engineering

The utility model discloses a drainage device for a sponge city for civil engineering, which relates to the technical field of civil engineering and comprises a shell and a cover plate mechanism arranged on the shell. The inner side of the shell is fixedly connected with a floating switch mechanism; the inner side of the shell is fixedly connected with partition plates; the bottom of the shell is fixedly connected with a motor below the partition plate; a motor output shaft is fixedly connected with the rotating shaft; the rotating shaft is fixedly connected with the auxiliary drainage assembly and the smashing blades. The auxiliary drainage assembly comprises a rotating rod mechanism, a supporting frame mechanism and a drainage baffle mechanism. And the shell is fixedly connected with the first water outlet and the second water outlet. The cover plate mechanism is arranged, so that quick positioning and mounting can be realized. A motor switch can be started when water in the shell reaches a certain height t