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混流泵混流泵特点是功率和效率曲线平坦(变化小),电机不易超载,工作范围较宽,在流量扬程变化时,不导致效率的显著降低,运行经济;关死点(零流量)功率小,易起动,配套电机相应变小。全可调轴流泵结构复杂,造价高,维修不便,混流泵则克服了这些不足。混流泵汽蚀性能比轴流泵好,转数可以比轴流泵高,容量相同时体积比轴流泵小,因此,发展较快。有的国家已造出大型可调叶片
Mixed-flow pump Mixed-flow pump is characterized by a flat power and efficiency curve (small changes), the motor is not easy to overload, a wide range of work, the flow head changes, does not lead to significant reduction in efficiency, operating economy; Easy to start, the corresponding motor smaller. Fully adjustable axial flow pump structure is complex, high cost, inconvenient maintenance, mixed flow pump to overcome these deficiencies. Francis pump cavitation performance than the axial flow pump, the number of revolutions can be higher than the axial flow pump, the same volume smaller than the axial flow pump, therefore, the rapid development. Some countries have created large adjustable blades