Screw extruder and process for controlling the quality of feedstuff products
US5714187A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 1995 |
| Grant date | Feb 3, 1998 |
| Priority date | — |
| Expiry date | Mar 24, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2948/92923
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A screw shaft, with associated first kneading elements rotates in a screw extruder, with further kneading elements being provided in the housing and being situated between the first kneading elements, with the further kneading elements being rotatable in the direction of rotation of the extruder and being radially displaceable in lateral and axial directions of displacement, with a back-pressure element being axially displaceable at the outlet end of the extruder screw via a known cylinder-and-piston unit thereby making it possible to alter the cross-section from the screw extruder outlet openings, with a rotating cutter cutting the product, discharged from the outlet openings, into predetermined lengths, wherein several support rings serve to support the screw in the screw extruder housing, with the rotatable further kneading elements being jointly adjustable via a driven rack, and the extruder housing being split into pivotable upper half and a fixed lower half, so that the further kneading element can be easily replaced. In addition to the screw extruder or expander structure, a process for controlling the quality of a feedstuff product is also set forth together with an install…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.