Rotary classifier and vertical mill
US10882050B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 14, 2017 |
| Grant date | Jan 5, 2021 |
| Priority date | — |
| Expiry date | Jul 11, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB02C2015/002
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention improves the even distribution of a powder to a pulverized coal pipe. A rotary classifier including: a rotary shaft rotatably supported around a rotational axis extending in a vertical direction; a frame body supported by the rotary shaft and including an opening on the outer periphery of the frame body; a plurality of powder outlets provided along the rotation direction and opening on the upper section of the frame body; a plurality of blades extending in the vertical direction at the opening on the outer periphery of the frame body and provided along the rotation direction; and an annular member that serves as a constricting section provided so as to narrow the interval from the blades to the rotary shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.