Sewage purification device for water conservancy construction

The sewage purification device comprises a mounting plate, a settling tank, a supporting frame, a supporting seat, a stirring mechanism, a blow-off pipe and a feeding mechanism, the settling tank is fixedly connected to the upper surface of the left position of the middle of the mounting plate, and a water inlet pipe is connected to the side surface of the upper end of the settling tank; the supporting seat is fixedly connected to the upper surface of the mounting plate corresponding to the middle position of the lower end of the settling tank, the supporting frame is fixedly connected to the upper surface of the right end of the mounting plate, a connecting plane is arranged at the upper end of the supporting frame, the feeding mechanism is arranged on the supporting frame, and the stirring mechanism comprises a motor, a rotating shaft, a stirring rod, a storage box and a sieve plate. The motor is fixedly connected to the upper end of the settling tank, the lower end of the rotating shaft is rotationally con