WATER PUMP WITH ENERGY SAVING DRIVE Russian patent published in 2003 - IPC

FIELD: agriculture. SUBSTANCE: proposed pump is designed for use in water supply system with open flow lines. Pump includes water supply reservoir, intake and discharge channels, intake discharge valves, sleeve, piston and mechanical coupling between movement of piston and intake and discharge valves. Piston is equipped with working chamber cylinder with filter and suction valve. Fixed pressure pipeline is placed coaxially inside working chamber cylinder and is provided with pressure valve. Seal is mounted between movable cylindrical of working chamber and pressure pipeline. EFFECT: reduced power consumption. 2 cl, 2 dwg