DIAPHRAGM PUMP Russian patent published in 1995 - IPC

FIELD: pump engineering. SUBSTANCE: two interconnected diaphragms are made up as two corrugated sheets coated with rubber. The hydraulic drive for the diaphragms is constructed as a eccentric-washer hydraulic pulsator provided with two opposite spaces for driving the diaphragms. The hydraulic distributor is constructed as a tie, cylindrical pins of the tie being provided with spring-loaded valves. The diaphragms are corrugated in the radial direction. Radial slots, which are extended over the half of the length of the corrugations, are made in the sheets of the diaphragm. EFFECT: enhanced efficiency. 7 cl, 6 dwg