Keywords:

Centrifugal Pump

Mixed-flow pump from the shape, structure, and the axial flow pump are among the range of Centrifugal Pump; mixed-flow pump of the pumping principle of the high-speed rotating impeller that produces Centrifugal Pump centrifugal force, but also has push lift axial flow pump, mixed-flow pump to rely on these two kinds of mixing and pumping force. The use of mixed-flow pump performance is also in the Centrifugal Pump and axial flow between the between the Centrifugal Pump it compared to head lower, while the flow of large number; it compared with the axial flow pump, head higher, but the flows were also smaller. This is China's vast and complex terrain, more choice of a pump adapted to local conditions.
The use of mixed-flow pump performance to the operating parameters to represent. For example, flow, head, power, efficiency, speed and so on. Under a certain speed in order to flow variables, that is, if we change the pump flow rate, then the pump head, power and efficiency are all subsequent change. The variation of this interrelationship, integrated into a few curves drawn to indicate that this is the pump performance curve. Mixed-flow pump performance curve shape is also a range of Centrifugal Pump and axial flow between the mixed-flow pump for high-lift, its flow and head, flow and power of the relationship between the variation is close to Centrifugal Pump, in use, close the valve can be used Doors start, when the minimum power, power generator safety. For low-head mixed-flow pump, variation between the performance parameters is close to axial-flow pump, in use should not be used to start off valve, but should be open valves to start, when power is relatively small, the motor is not easy to be burned.

In view of the above characteristics, mixed-flow pump for irrigation in the hilly areas of farmland.