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15问答网 > 启动离心泵前，需用被输送液体把泵灌满，其原因是为了防止什么现象

启动离心泵前，需用被输送液体把泵灌满，其原因是为了防止什么现象

2025-02-12 16:54:44

推荐回答（1个）

回答1：

如果不灌满，吸不上水。
离心泵是靠叶轮通过离心作用将水甩至蜗壳，水在蜗壳处挤压，从而将水挤出泵体。如果不灌满水，那么叶轮甩的就是空气。我们知道离心力跟密度是成正比的，而空气密度远小于水的密度。所以甩空气，产生的离心力很小，不够将水吸上来。导致离心泵空转。

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