DISPLACEMENT PUMP Russian patent published in 2012 - IPC F04B43/67 F04B9/02 

FIELD: engines and pumps.

SUBSTANCE: pump 10 serves to displace fluid and comprises one or several pump chambers 22 integrated into system of tubes to receive transferred fluid. Said system has, at least, one inlet 21' to be shut off by valve 24' and, at least, one outlet 21" to be shut off by valve 24". Said pump chambers 22 are communicated via, at least, one intermediate valve 13" with, at least, one displacement element made up of piston head 14 and piston rod 15 to effect intake and displacement strokes for fluid displacement in intermediate chamber 13" which increases and decreases the volume of pump chamber 22. At least, one flexible separation diaphragm 23 is arranged inside pump chamber 22 to separate fluid in intermediate chamber 13" from that being displaced. Besides, there is a drive to apply force or power to piston head 14 in displacement stroke so that force or power counteracts that acting on said head 14 on fluid side in intermediate chamber 13", hence, decreasing total force required for displacement.

EFFECT: reduced load on moving parts.

18 cl, 11 dwg