Performance Comparison of Mixed - flow Pump and Centrifugal Pump and Axial flow Pump

Mixed flow pump from the shape, the structure is between the centrifugal pump and axial flow pump; mixed pump pumping principle, the high-speed rotation of the impeller, both the centrifugal force of the centrifugal pump, but also has the axial lift pump lift, Two kinds of forces to mix and pumping. Mixed-flow pump performance is also between the centrifugal pump and axial flow pump, and centrifugal pump compared to the lower head, while the flow of some larger; it compared with the axial pump, the lift higher, but the flow is smaller. This is a vast territory for our country, the terrain is complex, more of a pump according to local conditions of choice.
The performance of the mixed-flow pump is expressed as a working parameter. Such as flow, head, power, efficiency, speed and so on. At a certain speed, the flow as a variable, that is, if you change the flow of the pump, the pump head, power and efficiency and so on will change. This change in the law of mutual relations, integrated into a few curves to represent, this is the pump performance curve. 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 variation of the flow rate and the head flow, the flow rate and the power is close to the centrifugal pump. In use, Start, then the power of the smallest, power machine safety. For low-head mixed-flow pump, the variation of performance parameters is close to the axial flow pump, in use, should not use the valve to start, but should open the valve, then the power is relatively small, the motor is not easy to burn.
In view of the above characteristics, mixed flow pump for hilly areas of farmland irrigation and drainage.
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