【摘要】 论述了射流式自吸离心泵的结构及工作原理,在压水室内的第6断面处设有回流孔、蝶阀,射流器系统与吸入口形成液体自循环。泵运转时,不仅可以完成自吸过程,而且可以将自循环射流器上的阀门关闭,射流器同时停止工作。因此:泵的效率提高了3%~5%。给出了系列射流式离心泵的性能试验结果:效率比国家标准规定效率提高5.3%~8.9%,自吸时间比标准的规定值缩短5~53 s,重量比原传统自吸离心泵平均减轻15.8%。该系列射流式自吸离心泵的研究是成功的。更多还原

【Abstract】 The structure and the working principle of the self-priming centrifugal pump of jet flow are elaborated.At the section No.6 of the surge chamber,a back-flow hole and valve are devised to form a liquid self-circulation system between the jet flow system and the suction.When the pump starts working,the self-priming process can be achieved,and the valve of water-ejecting will be shut off automatically to stop the working of jet flow system simultaneously.Compared with the traditional self-priming centrifugal pump,the efficiency of this type has been raised by 3～5%.The experimental results for a series of the jet pumps show that the efficiency has been raised by 5.3～8.9% higher;the self-priming time has been shortened by 5～53s than the national standards;The weight has been lowered by 15.8% than traditional types on the average.The research of this series of pump is successful.更多还原