Mixed flow pump from the shape and structure are between the centrifugal pump and axial flow pump.
Mixed flow pump principle, the high speed rotation of the impeller, both the centrifugal force generated by the centrifugal pump, but also with the axial flow pump to push the lift, mixed flow pump by the mixing of the two kinds of force and pumping.
Mixed flow pump performance is also between the centrifugal pump and axial flow pump, and it is compared with the centrifugal pump, head low, and the flow is larger; it is compared with the axial flow pump, head higher, but the flow is smaller. This is a vast territory, the terrain is complex, more than one type of pump to adjust to local conditions.
The performance of mixed flow pump is expressed by operating parameters. For example, flow, head, power, efficiency, speed, etc.. Under a certain speed, the flow is variable, that is, if you change the flow of the pump, the pump head, power and efficiency and so on. The change law of this kind of mutual relation, the synthesis draws several curves to express, this is the water pump performance curve.
Mixed flow pump performance curve shape is also a range of centrifugal pump and axial flow pump in between, mixed flow pump for high head, the flow and head, flow and power of the relationship between the variation is close to centrifugal pumps, in use can be used to close the valve gate start, when the minimum power, power machine safety. For low head mixed flow pump, the variation between the performance parameters is close to axial flow pump, in use, should not be used to start off valve, but should start to open the valve, when power is relatively small, the motor is not easy to be burned.
