TWO-SECTION CENTRIFUGAL AND GEAR PUMP Russian patent published in 2018 - IPC F04D13/12 F04C11/00 

FIELD: motors and pumps.

SUBSTANCE: invention relates to the aircraft engine construction and concerns the used in the aircraft gas turbine engines oil systems pump device. Two-section centrifugal-gear pump contains body made in the form of forming the closed cavity two half-connector members. Inside the cavity connected to each other covers are installed with a gap, docked with the corresponding half-connector members and forming isolated from each other chambers with them. In the chambers the each section engaged gears installed in pairs on two common shafts are located, with the formation of suction and discharge cavities connected to the working fluid supply and withdrawal channels, respectively. Closed cavity in the housing between the covers is communicated with any section suction cavity by means of the channel formed in any of half-connector members.

EFFECT: invention is aimed at improving the pump reliability by the oil stagnation elimination, which enters the housing closed cavity between the covers during the pump operation, by its pumping out organization from the latter.

4 cl, 2 dwg