Centrifugal pellet dryer screen with integral embossed deflector strips
US8220177B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 15, 2008 |
| Grant date | Jul 17, 2012 |
| Priority date | — |
| Expiry date | Feb 16, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF26B5/08
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An embossed screen having raised deflector elements on the internal surface is provided for a centrifugal pellet dryer. The deflector screen is formed as an integral structure, eliminating the need for separate deflector components secured by fastening elements along with the associated risks such as loosening or separation of the strip and contaminate build-up between the strip and the screen. The embossed deflector screen effectively deflects the pellets back toward the rotor where the pellets are reengaged with rotor energy, resulting in increased dryer efficiency and flow rate. The embossed deflector screen also enhances the overall structural strength of the screen, reduces manufacturing costs and prevents pellet entrapment that can lead to contamination in future runs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.