Apparatus for pressing liquid out of material containing liquid
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United States of America Patent
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-
Jul 26, 1983
Issued Date -
N/A
app pub date -
Feb 26, 1982
filing date -
Jul 9, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus for pressing liquid out of suspensions containing liquid, comprising a screw feeder (5) adapted to feed the suspensions towards a dewatering zone (2) in which there are disposed two converging endless filter members (20, 21) adapted to be driven round a pair of back and front breaking rollers (18a, 18b). The pressing angle (.alpha.) between the filter members can be varied as can the speed of the filter members in relation to the material which is fed forwards in order to achieve an optimum flow resistance for each suspension. In certain cases, this can be very high. A worm wheel (13) is provided to prevent material from retreating in the screw thread (11). According to one form of embodiment, two or more dewatering zones are disposed in series one after the other, thus further increasing the possibilities for achieving optimum dewatering conditions.
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