Self-cleaning screw conveyor
US4330032A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 1981 |
| Grant date | May 18, 1982 |
| Priority date | — |
| Expiry date | Mar 12, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28F19/008
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A screw conveyor apparatus suitable for conveying and processing flowable materials such as particulate materials and slurries, for example, which incorporates cleaning or scraping elements for dislodging the accumulation of materials from the surfaces of the helical flight. The apparatus comprises an elongated housing defining a conveying chamber in which a helical flight is rotatably supported formed with a central axially extending bore through at least a portion of the length thereof and a shaft slidably disposed in the bore and reciprocable and rotatable relative to the helical flight. A series of scraper elements are mounted on the shaft adjacent to the leading and trailing surfaces of the helical flight and a drive mechanism is provided for rotating the helical flight and the shaft. A power mechanism is provided for intermittently or continuously reciprocating the shaft relative to the helical flight to effect a traversing movement of the scraper elements along the helical surfaces to effect dislodgement of any accumulated material therefrom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.