Method and apparatus for conveying particulate material
US4119025A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 24, 1977 |
| Grant date | Oct 10, 1978 |
| Priority date | — |
| Expiry date | Jan 24, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S100/906
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for conveying particulate material of the type wherein it is desired that the material be simultaneously pre-compacted from a generally loose state to a more or less solid "plug" state. A screw conveyor is arranged to deliver loose particulate material to an intermediate chamber at the end of the screw conveyor means wherein the material is pre-compacted by the action of the screw conveyor. Following the intermediate chamber, a piston reciprocating coaxially with the screw conveyor further urges the material in a direction coaxial with the centerline of the screw conveyor to further advance the material through a straight coaxial conduit within which the material becomes compacted to an increased degree of compactness, solely by the action of the reciprocating piston. The reciprocating piston has preferably an annular face, whose outside diagram is generally the same as that of the Industrial Design of the conduit. The second, high degree of compactness is thus achieved solely by the action of the piston. Accordingly, the mounting of the screw conveyor is not subjected to extreme forces. The device is capable of compacting, for instance, fibrous material of a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.