The vortex pump (also known as gas liquid mixing pump) is a type of vane pump. In terms of principle and structure, it is different from centrifugal and axial flow pumps. Because it sucks and discharges liquid by the action of swirling liquid generated by impeller's high-speed rotation, so it is called a vortex pump. The main components of the vortex pump are the impeller, the pump body, the pump cover and the annular flow passage formed by them. The vortex pump impeller is different from the centrifugal pump impeller. It is a disc with radial blades on the outer wheel. The liquid enters the flow channel by the suction pipe and receives energy through the rotating impeller, and is sent to the discharge pipe to complete the working process of the pump.