Magnetically coupled centrifugal pump for pumping e.g. corrosive media, has permanent magnets in hub arranged in section of rotor surrounded by mantle of can, where surfaces encountering in pump space with medium are non-metallic

摘要

The pump has an impeller (22) arranged in a pump space and connected with a hub (13) in a torque-proof manner. The hub is mounted by grooved ball bearings (15, 16) on an axis (14) and carries permanent magnets (12). The bearings and the magnets are arranged in a separating can (3). The impeller is arranged outside the can in the pump space. Permanent magnets (11) of a driving rotor (10) are arranged in a section of the rotor surrounded by a mantle of the can, where surfaces encountering in the pump space with a medium are non-metallic.