Drop flow vertical shaft with spiral-flow type split-flow water inlet structure

The utility model provides a drop flow vertical shaft with a spiral-flow type flow dividing water inlet structure. The drop flow vertical shaft comprises a vertical shaft body and a flow dividing device arranged in the vertical shaft body. An air inlet pipe and a water inlet pipe are arranged on one side of the shaft; the bottom of the shaft is vertically connected with the drainage transverse pipe; the flow dividing device comprises first, second and third partition plates which are equal in height, the surface of the first partition plate is a plane, and the surfaces of the second and third partition plates are arc-shaped curved surfaces; the first end faces of the first and second partition plates and the first end face of the third partition plate are connected pairwise, a first intersection line is formed at the joint, and the second and third partition plates are symmetrically distributed along the first partition plate; the second end face of the first partition plate is connected with the inner wall o