Jiangsu university developed a new type of permanent magnetic bearing centrifugal pump

Recently, a new type of permanent magnetic bearing centrifugal pump in jiangsu university successfully developed. Because of the rotor and pump body no mechanical contact and friction, this device vibration and low noise, the model test of the noise lower than 40 decibels. Researchers have been invited to the United States in October at the 13th international magnetic suspension bearing society's annual meeting, introduces the research.

According to the national water pump and system engineering technology center QianKunXi professor introduction, this kind of ordinary three-phase ac motor through the magnetic coupling mode drive innovation device, broke through the "no shaft not turn, axis will be bearing" traditional mechanical rotating concept and pattern, its rotor without a shaft, no tangible bearing, impeller shape like an alien flying saucer, in pure ever magnetic role in a state of suspension rate and steady rotation.

QianKunXi said, permanent magnetic bearing is the biggest advantage can resolve mechanical bearing use the durability problem. Permanent magnetic bearing centrifugal pump inside without mechanical wear, no lubrication and sealing, long service life.

With water as medium test shows that proper adjustment for ever and magnetic force size, with the current physical phase equilibrium, permanent magnetic bearing centrifugal pump is can achieve stable equilibrium, this shows that permanent magnetic suspension technology in dynamic state is able to realize stable.