The invention provides a screw drill with a skeleton-type stator, belonging to the field of drilling tools.
本发明提出一种带有骨架式定子的螺杆钻具，属于钻井工具领域。
Skeleton type can be divided according to package seal, and seal the exposed skeleton oil seal assembly.
按骨架型式可分为内包骨架油封，外露骨架油封和装配式油封。
Precipitator skeleton dust cyclone flow type characteristic shell design, can remove partial whirlwind role, reduce the filter bag load.
除尘器骨架特点壳体旋风除尘器流型设计，能起局部旋风作用，减轻滤袋负荷。
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