COMPRESSIVE PUMP Russian patent published in 2000 - IPC

FIELD: pump engineering, applicable in various branches of national economy for transfer of fluid media. SUBSTANCE: device has body 1, with flexible tube 2 installed in a duct on its inner side, the tube is actuated by rollers 3 of rotor 4 through hose-spacer 5 attached to body 1 by members 6, using braces 7 and beads 8. Hose-spacer 5 is hermetically connected to variable-capacity chamber 9, whose cavity is filled with driving medium. The wall of chamber 9 is made flexible for mechanical action on it from without. EFFECT: regulated feed at transfer of fluid media. 2 cl, 3 dwg