OIL PRODUCT TRANSFER PUMP Russian patent published in 1997 - IPC

FIELD: oil producing industry; oil transfer pumps. SUBSTANCE: pump has housing accommodating electric motor stators and impeller. Impeller serves as rotor of electric motor. Impeller is made in form of two disks-rotors coupled to each other and arranged between end face surfaces of stators with required air gaps. One of stators is made for disconnection from supply independently from other stator. Pump has shaft installed on bearings in housing. Impeller is mounted on shaft. EFFECT: enlarged operating capabilities. 2 dwg