Inclined plate type rotational flow sand setting system

The invention discloses an inclined plate type rotational flow sand setting system. The system which comprises a tank, a sand lifting pipeline vertically arranged in the middle part of the tank and a sand-lifting air-distributing structure is characterized in that: the lower half part of the tank is a sand hopper part, the upper half part of the tank is a sand setting zone, and an inflow port andan outflow port are arranged on the tank; the upper end of the sand lifting pipeline is connected with a sand-water separator; the bottom surface of the sand setting zone is provided with an inclinedplate precipitation structure; the tank is provided with an inner wall jet structure; the lower end of the sand lifting pipeline is provided with a sand lifting pipeline inlet structure; and the sand-lifting air-distributing structure comprises a pressure air pipeline which is vertically arranged and is in parallel with the sand lifting pipeline, the lower port of the pressure air pipeline is transversely communicated with