Commonly used farmland irrigation and drainage pump

Mixed flow pump after the prime mover impeller rotates, centrifugal force and the function of the liquid axial thrust, is a combination of centrifugal pumps and axial flow pump, liquid oblique flow impeller. So it is a pump between centrifugal pumps and axial flow pump. Mixed flow pump specific speed centrifugal pump prep above, below the axial flow pump, generally between 300-500. Its head is higher than axial flow pump, but traffic is smaller than axial flow pump, is bigger than a centrifugal pump.

Mixed flow pump is pumping station in the flow of the main equipment and upgrade the water, in water supply and drainage engineering in towns and industrial enterprises, extensive use of the water pump vane pump, and the centrifugal pump in the most common. Mixed flow pump, the pumping principle of high-speed rotating impeller, both generate centrifugal force of the centrifugal pump, but also the lift of the axial flow pump, mixed-flow pump by these two kinds of force and pumping on the mixing action.

Axial flow pump has commonly 2 ~ 6 piece of space warp shaped blades. According to the fixed way on the blade in the wheel hub, can be divided into fixed, half adjustment type and whole adjustment type 3 kinds. Fixed axial flow pump blades and hub body is cast, or use the link is fixed on the wheel load, so the blade installation Angle is shown in figure 2-20 half adjustment blade figure can't adjustment.