Double press screw
US5333556A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1992 |
| Grant date | Aug 2, 1994 |
| Priority date | — |
| Expiry date | Mar 31, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB30B9/26
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A double-screw press for separating a liquid from a two-phase solid-liquid material includes a hollow barrel and two screws disposed in the barrel. The barrel comprises a plurality of detachable barrel plates and a plurality of spacers disposed between the barrel plates and cooperating with the barrel plates in defining slits. The screws are arranged side by side with a gap defined therebetween, and are rotated by a motor to move a material, which has been charged into the barrel, efficiently from an upstream end to a downstream end of the barrel. The barrel plates and the screws have respective passages connected to cooling water sources, which supply cooling water to keep the temperature in the screws and the barrel at a desired level. The charged material is crushed and mixed in the gap between the screws, and oil is expressed from the material when it is compressed in the barrel. The expressed oil is discharged through the slits and collected in a container.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.