| 摘要 |
Disclosed is an eccentric screw pump for conveying liquids from bore holes, in particular oil well bores. The pump includes an eccentric screw, a stator associated with the screw and located at the lowest point of a riser, and an aboveground drive and bearing unit, the drive shaft of which is connected with a rod linkage by means of a rotating joint which transmits torque and axial force. The rotor is suspended from the rod linkage. For the installation of several conveying units in series and/or of reserve units, several separate stators vertically aligned with each other may be built into the riser and/or several rotors may be placed above each other in the linkage.
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