TWO-SECTION CENTRIFUGAL GEAR PUMP Russian patent published in 2005 - IPC

FIELD: manufacture of aircraft engines; centrifugal gear pumps used in oil systems of aircraft gas-turbine engines.

SUBSTANCE: proposed two-section centrifugal gear pump has housing with two pairs of separators of suction and delivery cavities and gears with impellers fitted on two common shafts mounted in bearings. Separation cavity formed inside housing is brought into communication with cavities where bearings are located. Separators of suction and delivery cavities are turned in at least one pair to opposite sides. One suction cavity is directed inside housing and is brought in communication with separating cavity. Operational reliability is enhanced due to forced circulation of lubricant through bearings by turning the separators in one pair of separators, thus bringing the cavities after bearings in communication with one suction cavity.

EFFECT: enhanced operational reliability.

1 dwg