Eddy current separator and method of making a rotor
US5236091A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 1992 |
| Grant date | Aug 17, 1993 |
| Priority date | — |
| Expiry date | Apr 22, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03C2201/20
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A magnetic rotor for use with an eddy current separator. The rotor has a plurality of permanent magnets bonded to a polygonal outer periphery and undercuts are formed in the flat surfaces to relieve stresses due to differences in thermal co-efficient of expansion of the permanent magnets and the rotor structure. A carbon filament is wrapped around the permanent magnets under tension overcome the centrifugal force due to rotation of the rotor. The rotor is supported on a bearing sleeve that surrounds the rotor shaft with rotor bearings which support the rotor on the sleeve and the sleeve extends inwardly over the rotor shaft and the shell has shell bearings supported on the sleeve extension. Therefore, the sleeve supports the rotor independent of the shell so that the bearing of the shell and the bearing supporting the rotor are each independent of one another. The sleeve is supported on pillow blocks. The ends of the rotor are clamped to the rotor shaft by means of a locking assembly arrangement. The shell has a heat shield made of ceramic tiles which are fixed to the outside of the shell. The tiles are held to the shell by a suitable netting of non-magnetic material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.