水泵无底阀吸水方式综述

Summary of water sucking ways of a water pump without bottomvalve

介绍水泵无底阀吸水时两种主要发式，即喷射系和真空罐吸水方式的结构原理，并持别介绍了真空罐式无底阀吸水方式的优点，具有较高时推广价值。

The paper introduces two main water sucking ways of a waterpump without bottom valve, these are the structure, principleand the operating process of a jet pump and sucking ways ofvacuum pot The sucking ways of vacuum pot is especiallyintroduced in the paper.