Exhauster for a solid fuel pulverizing and firing system having an improved fan assembly
US6202572A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 1, 2000 |
| Grant date | Mar 20, 2001 |
| Priority date | — |
| Expiry date | Aug 1, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23K2201/10
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An exhauster is provided having an improved fan assembly for exhausting coal through an exhauster fan housing, the exhauster fan assembly being mountable within the housing on a shaft for rotation about a shaft rotational axis. The housing has an inlet generally aligned with the shaft rotational axis such that coal entering the housing through the inlet contacts the rotating exhauster fan and is redirected thereby along a radial outlet path. The exhauster fan assembly includes a plurality of blades and a hub having an outer surface, a free end, and a bore for receiving therein the free end of the shaft in an orientation in which the free end of the shaft and the free end of the hub are oriented in the same axial direction. The outer surface of the hub is radially outwardly spaced from the bore and the blades are mounted to the outer surface of the hub at uniform angular spacings therearound and project radially outwardly therefrom. The exhauster fan assembly also includes a hub protector assembly having a wear plate and wear plate connector means for connecting the plate to at least one of the free end of the shaft and the free end of the hub. The wear plate has an outer periphery …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.