"泵要具有自排气功能"怎么理解

自排气是否就是指泵能自动排气？为什么要自动排气，不是自排气的泵会有什么问题？泵只是启动的时候排气？其他情况还需要排气吗？

那么哪些类型泵是手动排气，哪些类型泵是自动排气，自吸泵是不是都要自动排气？

自排气是指：泵的吐出口在泵的设计中处于最高点，当“灌泵”时，泵内不能形成“气堵”。有气就有可能气蚀。
我只知道，机械密封PLAN23方案需要手动排气。

举个双吸泵的例子啊，离心泵一般闭阀启动，泵里面有空气怎么灌泵

个人理解的自排气是指的泵壳上设置自排气，泵在运行过程中一些少量气体不断聚集在泵体高点处，不排出，逐渐多了会气缚

这个问题我也一直没太搞明白，有没有高手指导一下

jhy1010 发表于 2020-2-17 19:23
举个双吸泵的例子啊，离心泵一般闭阀启动，泵里面有空气怎么灌泵

泵体抽真空

原理很简单，一说出来，懂的人自然就懂。主要体现在解决泵自吸这块，四个字，射流排气。我擦，关于这个问题，我要是去设计院现场讲解是要收费的。

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