SUBMERGIBLE DIAPHRAGM ELECTRIC PUMP FOR LIFTING LIQUID Russian patent published in 1995 - IPC

FIELD: pumping liquids. SUBSTANCE: electric motor and pump with a pressure regulator are mounted on the common shaft. The suction and delivery valves of the working chamber are arranged at the head of the pump. The second diaphragm pump with delivery and sucking valves is mounted at the opposite end of the shaft of the electric motor. The coupling is provided with a unit wherein valves is mounted in series. The diaphragm is interposed between the valves to define a space around of the diaphragm filled with liquid. The connecting pipe is mounted in the bottom head of the pump, the head being provided with a hydraulic gate. EFFECT: improved design. 2 cl, 3 dwg