PUMP WITH MAGNET USED AS POWER SOURCE WITHOUT SUBMERGED BEARING

PROBLEM TO BE SOLVED: To prevent trouble in a submerged bearing and cans, considered as the most possible cause of the malfunction of a pump with a magnet as a driving source, by rotating an impeller, being floated in liquid, in a free condition of noncontact with surroundings to eliminate a bearing in liquid. SOLUTION: A hollow cylindrical rotor 3 made of nonmagnetic conductive material is fixed to the back of an impeller 2. There are inside and outside doubled cylindrical cans, so that permanent magnet cylinders 7, 8 (inside and outside magnet cylinders) corresponding to the outside of the outside can 5 and to the inside of the inside can 6 can be rotated with the same motor as they are kept corresponding thereto. The rotor 3 is inserted in a gap between the inside and outside cans 5, 6, to be rotated in a free condition. By rotating the inside and outside magnet cylinders 7, 8 with the outside motor, rotating force and floating force are given to the rotor 3 and power is thus granted to the impeller 2.