公开(公告)号：US3764235A

公开(公告)日：1973-10-09

申请号：US3764235D

申请日：1971-12-27

Applicant: DYNAMIT NOBEL AG

Inventor： BITTERMANN V

IPC: F04F1/06 ,  E21B33/12 ,  F04F3/00

CPC classification number: F04F1/06 ,  Y10T137/314

Abstract: A pneumatic pump device for the removal of water from holes inlcuding an inflatable cylindrical hollow body of an elastic material sealed off on both ends by sealing elements. A flexible riser is arranged to extend in the axial direction through the hollow body and in sealing contact through both of the sealing elements. First and second bores are provided, one in each of the sealing elements for permitting the entry and egress of a gas to and from the hollow body. In one of these bores a valve is installed which is controlled by the internal pressure of the hollow body.

Abstract translation: 一种气动泵装置，用于从通过密封元件在两端密封的弹性材料的可膨胀的圆柱形中空体中的孔中除去水。 柔性提升器布置成沿轴向延伸穿过中空体并且通过两个密封元件密封接触。 提供第一和第二孔，每个密封元件中的一个用于允许气体进入和离开中空体。 在其中一个孔中安装有由中空体的内部压力控制的阀。