【摘要】 自吸泵广泛用于喷灌、消防等场合。全面总结和分析了自吸泵的发展史,归纳了自吸泵自吸时间和最大自吸高度的计算模型,总结了自吸性能影响因素研究现状,介绍了回流孔大小、位置的计算公式,以及隔舌间隙及泵内储水容积和气液分离室容积的控制;阐明了轴封的气密性、吸入管路的气密性、浸入液面下的管路深度和入口管路的容积这些外部因素对自吸性能的影响机理;指出了自吸泵进一步发展的趋势和方向,为后续研究工作提供了指导性建议。更多还原

【Abstract】 Self-priming pumps are widely used in sprinkler irrigation and fire protection business. Its recent research achievements were summarized and analyzed, including the building of mathematical models and maximum priming lift, the analysis of self-priming performance influencing factors, the discussion of size and position of return-flow hole as well as the separation tongue gap, the volume of water pre-stored and air- liquid separated chamber inside the pump, the influencing mechanism of shaft sealing and suction line’s leak tightness along with the pipe length under liquid and the volume of suction line on self-priming performance. Some key issues for further research of self-priming pump are discussed as well.更多还原