NON-BALANCED DRIVE OF BOTTOM-HOLE OIL PUMP Russian patent published in 2012 - IPC F04B47/02 

FIELD: engines and pumps.

SUBSTANCE: non-balanced drive of bottom-hole oil pump includes support frame installed on support plates, electric motor, conversion system of rotation to back-and-forth movement with reduction gear on two outlet shafts of which there fixed are working rotors, handwheel energy accumulator, and power circuit connecting the drive to the pump. Support frame is installed in container. Reduction gear and support rollers for power circuit are installed horizontally on the frame. Vertical guide vanes are attached to support frame; inside them there arranged is extension type post equipped with lower and upper sprockets for power circuit; limit stop is fixed on the circuit end, and bracket is fixed on extension type post to interact with the limit stop.

EFFECT: simpler design and smaller dimensions.

2 dwg