Patent ID: 6672818
Filing Date: 2004-01-06
Classification: F04D

Abstract:
A magnetically driven pump comprising:a pump element fitted with a first rotor in the form of a wheel mounted to rotate in a body connected to a suction and discharge piping, a first series of magnets integral with the first rotor, a driving motor fitted with a drive shaft on which is mounted a second rotor carrying a second series of magnet, both series of magnets being laid out concentrically to provide a rotation magnetic coupling, a sealing device having a fixed partition extending in a gap between both series of magnets while providing tight separation between the pump element and the driving motor, and a connection piece connected to the drive shaft, wherein the connection piece is continued axially by a sufficient length to insert the connection piece inside a female cylindrical bearing in a core of the first rotor to provide mechanical support and accurate centering of the fixed partition and of the first rotor.