Presses – With drain means for expressed liquid – Drainage through or along surface spanning pressure surfaces
Patent
1993-06-01
1994-08-16
Valenza, Joseph E.
Presses
With drain means for expressed liquid
Drainage through or along surface spanning pressure surfaces
100145, 100117, 100148, 198659, 198671, 198676, 198608, B30B 926
Patent
active
053376587
ABSTRACT:
A method and apparatus for conveying and compacting material which includes fractions of different sizes, densities, elasticity, moisture-content etc. wherein a shaftless spiral is disposed in a casing and the spiral is driven in rotation at an end of the casing where the material is fed into the casing. At the opposite end of the casing, i.e. the end located adjacent a discharge section of the casing, the casing surrounds the spiral with slight play, and, moreover, the casing extends in an end region below the spiral to form a correction zone. Counterpressure brakes the movement of the material to compact the material in the compaction zone. The casing is provided with drainage holes in the compaction zone for discharge of liquid expressed from the compacted material during passage through the compaction zone.
REFERENCES:
patent: 351014 (1886-10-01), Wissler
patent: 2177179 (1939-10-01), Hendershott et al.
patent: 3802551 (1974-04-01), Somers
patent: 4498382 (1985-02-01), Pera et al.
patent: 4520724 (1986-06-01), Costarelli
patent: 4779528 (1988-10-01), Bruke
patent: 5000307 (1991-03-01), Bruke
patent: 5217108 (1993-06-01), Newnan
Screw Press--Feb. 1981--Publication of ML Engineering AB Strain Press--Jul. 1989--Publication of Picatech AB.
Spirac Engineering AB
Valenza Joseph E.
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