Aim at 5 inner recirculation self-priming centrifugal pumps that specific speed are 74~112,adopt 3 different inner-diameter suction pipes and 6 kinds of separation tongue gap,a more overall experimental study on self-priming time under rule height and the max vacuum that can be attained was carry on.
针对比转速为74~112的5台内混式自吸离心泵,采用3种不同直径吸水管和6种不同隔舌间隙,对其规定高度自吸时间和极限真空度进行了较全面的试验研究,并对试验结果进行了综合分析。