活塞环形高效抽砂泵的研制及应用

Development and application of high efficiency sanding-defense pump with ring-shape piston

介绍了活塞环形高效抽砂泵的结构组成及工作原理。实践证明 。

This paper introduces the structure and working principle of high efficiency sand defense pump. It is proved by the field application that it can pump out the sandy liquid from the low-pressure absorption well effectively.