Screw machine and method as well as processing installation for the processing of bulk material
US9688003B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 14, 2014 |
| Grant date | Jun 27, 2017 |
| Priority date | — |
| Expiry date | Sep 14, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/767
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A processing installation for the processing of bulk material has a vacuum filter insert for degassing of the bulk material. The vacuum filter insert is arranged in a casing of a screw machine downstream of the feed opening thereof and is provided with at least one filter element so that the vacuum filter insert forms a gas-permeable wall portion which defines the at least one casing bore of the screw machine. Seen in a degassing direction, a protective element comprising a plurality of through-openings is arranged upstream of the at least one filter element. The protective element acts as a granule protection for the at least one filter element and prevents granular bulk material from damaging the at least one filter element. As a result, the vacuum filter insert has a longer service life, thus ensuring a long operating time for the processing installation without interruptions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.