CENTRIFUGAL PUMP DIRECTLY CONNECTED TO ULTRA-HIGH-SPEED PERMANENT MAGNET MOTOR

摘要

The present invention relates to a centrifugal pump directly connected to an ultra-high-speed permanent magnet motor. The motor includes: a motor housing; a rotor having a middle rotor part arranged at the center of the motor housing in a state in which a permanent magnet is mounted, an upper side rotor part extended upwards from the middle rotor part to be withdrawn through an upper withdrawal hole of the motor housing, and a lower side rotor part extended downwards from the middle rotor part withdrawn through a lower withdrawal hole of the motor housing; and a stator arranged on an outer circumference of the middle rotor part in a state of winding a coil to be fixated on an inner wall of the motor housing. An impeller is coaxially fixed at a lower end of the lower side rotor part. A casing performs a discharge operation through a fluid inlet, a fluid passage, and a fluid outlet, and accommodates the impeller in the fluid passage through an upper side opening. A stuffing box is disposed between the motor housing and the casing to maintain airtightness between the upper side opening of the casing and the lower side rotor part. The present invention can enhance efficiency and reduce vibration and noise.;COPYRIGHT KIPO 2020