Apparatus for dewatering and lossening raw biopulp
OwnerJosef Kubat, Jan Abom +2inventors
InventorsJosef Kubat, Jan Abom, Carl Klason, Frederik von Bulsingslowen
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Abstract
An apparatus for production of dewatered and loosened biopulp, wherein precrushed raw biopulp is press fed by pistons (2) against a pair of counter-rotating press rolls (4, 5) between which the biopulp is dewatered. The pulp is then fed into a backpressure vessel (7) maintained at an overpressure, which prevents water from entering the backpressure vessel and remoistening the biopulp. The biopulp leaves the backpressure vessel through an air-tight compartment feeder (9) constructed like a revolving door. The press rolls include one of solid metal (5) and another (4) with a number of elastically mounted plates which can move radially in response to a radial load.
Claims3
Apparatus for dewatering and loosening raw biopulp, comprising a system of feeder pistons (2) for press feeding the biopulp between two profiled parallel press rolls (4, 5) on an entrance side of the press rolls, including a solid metal first press roll (5) and a second press roll (4), in a width corresponding to that of the first press roll, the second press roll including a number of elastically mounted plates which can move radially in response to a radial load, a backpressure vessel (7) communicating with an exit side of the press rolls and having means for creating an overpressure on the exit side of the press rolls, and a compartment feeder (9) for transferring the biopulp from the backpressure vessel without loss of the overpressure therefrom.
Dependencies are inferred from the claim text.