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The performance of the mixed-flow pump is represented by operating parameters. For example, flow, head, power, efficiency, speed and so on. At a certain speed, with the flow as a variable, that is, if the flow of the pump is changed, the head, power, and efficiency of the pump will change accordingly. The change law of this kind of mutual relations is drawn into several curves, which is the pump performance curve. The shape of the performance curve of the mixed-flow pump is also between the centrifugal pump and the axial-flow pump. For the high-head mixed-flow pump, the relationship between flow and head, flow and power is close to that of the centrifugal pump. In use, the valve can be closed. Start, when the power is minimal, the power machine is safe. For the low head mixed flow pump, the variation between the performance parameters is close to the axial flow pump. In use, it is not appropriate to use the valve to start, but to start the valve. At this time, the power is relatively small, and the motor is not easily burned.
In view of the above characteristics, the mixed-flow pump is suitable for farmland irrigation and drainage in hilly areas.
What is the difference between the performance of mixed-flow pumps and centrifugal pumps and axial-flow pumps? Where does it apply?
Mixed flow pump from the appearance, structure are between the centrifugal pump and the axial flow pump; mixed pump pumping principle, impeller high-speed rotation, both centrifugal pump centrifugal force, but also has the axial pump lift force, mixed flow pump by Two kinds of force mixing pumping water. The performance of the mixed flow pump is also between the centrifugal pump and the axial flow pump. Compared with the centrifugal pump, the head has a lower head and the flow rate is larger. Compared with the axial flow pump, the head has a higher lift, but the flow rate is smaller. This is because China has a vast territory and a complex terrain. There is more choice of a pump type to suit local conditions.