ROTARY PUMP Russian patent published in 2021 - IPC F04C2/00 F04C5/00 

FIELD: hydraulics.

SUBSTANCE: invention relates to positive displacement hydraulic machines. The rotary pump contains housing with fixed end covers having a system of channels for supplying and removing the pumped liquid, ending in windows 3 and 4, rotating elements located in the housing with a small clearance relative to its walls. The axes of rotation of the rotating elements are parallel and eccentric. Rotating elements are made in the form of inner and outer drums 5 and 6, cantilevered on the shafts and rotating at the same angular velocity. Windows 3 and 4 are located at the open end of the outer drum 6 in the areas of the greatest change in the gap between the drums 5 and 6. A layer of porous material is placed between the drums 5 and 6.

EFFECT: invention is aimed at providing decreased supply pulsation and increased volumetric efficiency of the pump.

1 cl, 4 dwg