Roller mill, aspirating assembly, and method for retrofitting a roller mill
US10946385B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 17, 2016 |
| Grant date | Mar 16, 2021 |
| Priority date | — |
| Expiry date | Oct 31, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB02C11/08
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A roller mill (10) for grinding material, an aspirating assembly (23; 23′) and a method of retrofitting an existing roller mill. The roller mill (10) contains a grinding space (11, 11′) for grinding material, a separating wall (17) separates the grinding space from an aspiration space (21, 21′). At least one aspiration opening (13), is formed in the separating wall (17) through which aspiration air can flow due to a pressure difference between the aspiration space and the grinding space. The roller mill (10) has a closing element (14) for opening and closing the aspiration opening (13). The closing element (14) is in or moves into an opening position (O), which opens the aspiration opening (13), when the pressure difference exceeds a threshold value, and is in or moves into a closing position (S), which closes the aspiration opening (13), when the pressure difference falls bellow the threshold value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.