公开(公告)号：US5147185A

公开(公告)日：1992-09-15

申请号：US660333

申请日：1991-02-22

申请人： K. Lynn Niehaus ,  Kevin L. Newcomer ,  Steven C. Richter

发明人： K. Lynn Niehaus ,  Kevin L. Newcomer ,  Steven C. Richter

IPC分类号： E21B43/12 ,  F04B43/00 ,  F04B43/113 ,  F04B47/08 ,  F04B53/10 ,  G01N1/14

CPC分类号： F04B53/1052 ,  E21B43/121 ,  F04B43/0072 ,  F04B43/113 ,  F04B47/08 ,  G01N1/14

摘要： A liquid pump apparatus is disclosed for pumping groundwater samples, contaminants or other fluids from a well, monitoring site, tank, vessel, or the like. The pump apparatus is applicable in systems including dedicated wellhead assemblies permanently installed at such wells or monitoring sites in order to minimize cross-contamination from site to site. Another application of the pump apparatus for recovery, collection and control system for cleanup of leachate or other liquid material or contaminated groundwater from a landsite is also disclosed. The pump apparatus according to the invention includes check valve means adapted to accommodate vertical, horizontal, non-vertical, or even inverted pump orientations, without requiring a high level of static head in order to function properly.

摘要翻译： 公开了一种用于从井，监测点，罐，容器等中抽取地下水样品，污染物或其他流体的液体泵装置。 该泵装置适用于包括专门的井口组件的系统，这些井口组件永久安装在这些井或监测点，以便最小化现场交叉污染。 还公开了用于从场地清理渗滤液或其它液体材料或污染的地下水的回收，收集和控制系统的泵装置的另一应用。 根据本发明的泵装置包括适于容纳垂直，水平，非垂直或甚至倒置的泵取向的止回阀装置，而不需要高水平的静止头以便正常工作。