Patent ID: 8162630
Filing Date: 2012-04-24
Classification: F04D

Abstract:
1. A rotary pump, comprising: a pump housing providing a static and closed enclosure of pumping liquid in an interior of the pump, a contact-less, permanent-magnet, coaxial rotary coupling for transmitting a drive moment into the interior of the pump housing, a pump blade wheel that forms, together with a magnetic rotor carrying permanent magnets, a pot-shaped component supported by floating bearings and open toward a drive side, wherein magnetic field lines of a driving part of the rotary coupling point radially outward and wherein magnetic field lines of a part of the rotary coupling connected to the pump blade wheel point radially inward, and a plurality of floating bearing sections axially located between the pump blade wheel and the drive side and s aced apart axially from one another to radially support the pot-shaped component, the floating bearing sections each including a rotating part arranged along an outer periphery of the magnetic rotor, the rotating part of each floating bearing section being rigidly connected to the rotor or formed by the outer periphery or sections of the outer periphery of the magnetic rotor.