High efficiency mixed-flow pumps, and wide area of ​​high efficiency, the same pump in the head or flow changes in the case of economic use. Mixed-flow pump from small flow point to large flow point power change is small, you can start the shutdown point, but also at the maximum flow point (fully open) start, which is conducive to power packages. Mixed flow pump has better suction capacity, for medium and small pumps, allowing installation of the water level higher, the use of management and maintenance are more convenient; for large pump, you can reduce the depth of excavation, reduce pumping station investment, Do not have to worry about the risk of cavitation during operation. In terms of structure, the volute-type mixed-flow pump has the similar characteristics as the centrifugal pump. Large-scale adjustable vane volute and guide vane pump with smooth operation, high economic efficiency, simple operation, the use of a wide range of features, but the structure is complex, and large adjustable vane-type axial flow pump comparable. However, the large mixed flow pump provided with the front guide vane has its own unique features. For example, it is safe and reliable, and its operation cost is lower than a certain range of specific rotation speed. Its structural complexity is better than that of a vane. Especially in large pump stations where the lift change is not very large, the vertical volute fixed vane mixed flow pump can obtain a series of advantages such as simple structure, high efficiency, easy operation and maintenance, low investment cost and the like.
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