当前,国产离心泵的效率较低,仅为50%～80%,其中200D-43×7型水泵的设计最佳,效率为80%。为使D型泵等离心泵的效率、扬程、流量进一步提高,可以而且应该将水泵叶轮的圆弧形叶片用摆线型叶片代替。理论计算表明,改后可提高水泵叶轮的流量、扬程和效率。以200D-43×7型水泵第Ⅰ级以后叶轮为例,叶轮叶片由圆弧形改为摆线形后, At present, the domestic centrifugal pump efficiency is low, only 50% to 80%, of which 200D-43 × 7-type pump design the best efficiency of 80%. In order to D-type pump centrifugal pump efficiency, lift, flow rate to further improve, you can and should pump impeller arc-shaped blade with cycloid-type blade instead. Theoretical calculations show that the pump impeller can improve the flow, lift and efficiency. To 200D-43 × 7-type pump after the first-class impeller, for example, the impeller blade from circular arc to cycloid,