PUMP SET Russian patent published in 2011 - IPC F04B47/08 F04B43/06 

FIELD: engines and pumps.

SUBSTANCE: elastic pipe for fluid pumping is equipped with barriers against contact with inlet and outlet holes. The barriers are made in the form of plate springs that close holes in case of a power contact with the elastic pipe and open holes in case there is no contact. The plate springs, at least with one end, are connected to each other by means of a circular base, and inlet and outlet holes are arranged in the form of a slot.

EFFECT: damage of elastic pipe used to pump fluids is prevented in case of increased throughput capacity of inlet and outlet holes.

3 cl, 7 dwg