PUMP Russian patent published in 2002 - IPC

FIELD: manufacture of explosion pumps; transfer of oil. SUBSTANCE: pump has housing with inlet branch pipe and inlet and outlet passages. Working chamber is made in form of two convex flexible disks. Lower disk is provided with guide studs. Outlet branch pipe fitted with check valve is made in form of plate mounted on rod provided with helical thread and spring. Pump is provided with additional inlet branch pipe having check valve for delivery of oil to main laid above plate; first inlet branch pipe for delivery of water is located between plate and working chamber and is provided with magnetoelectric valve. Pump housing is provided with delivery branches located below water supply branch pipe. Lower disk is provided with springs which embrace studs. EFFECT: enhanced efficiency of oil transfer. 2 dwg