CENTRIFUGAL GEAR-TYPE OIL PUMP Russian patent published in 2016 - IPC F04D13/12 F04C11/00 

FIELD: machine building.

SUBSTANCE: invention relates to centrifugal gear oil pumps used in oil systems of aircraft gas turbine engines. Centrifugal gear-type oil pump includes housing located in gear housing bores with oil feed channels connected to the suction cavity, and made integrated with gears of drive and driven rotors arranged in thrust bearings arranged in housing cavities facing towards the drive cavity to the pump. Cavity of thrust bearings of the driven rotor is insulated from the drive cavity. Cavity of drive rotor bearings is interconnected with drive cavity and connected via valves with cavity of driven rotor thrust bearings, which is additionally connected vis line to suction cavity.

EFFECT: invention allows to ensure forced circulation of lubrication through thrust bearings of two rotors without using auxiliary pumps, which increases reliability and simplifies its design.

2 cl, 1 dwg