B - Operations – Transporting – 30 – B
Patent
B - Operations, Transporting
30
B
B30B 9/20 (2006.01) D21C 9/18 (2006.01) D21F 1/16 (2006.01)
Patent
CA 2205461
An apparatus for dewatering material suspensions during their passage between two press rolls (10), where liquid is pressed in by overpressure through the shell surfaces of the rolls, and the final dewatering takes place by pressing in a nip (11) between the rolls (10). The upper portion of the rolls (10) is surrounded by a casing (12) with inlets (14) for the suspension. An outlet for the material web is located beneath the nip (11), and doctor blades (16) are located in connection to both rolls (10) beneath the nip (11). The transfer of the dewatered material takes place by means of gravity.
La présente invention concerne un dispositif permettant d'essorer des suspensions de matière à l'occasion de leur passage entre deux cylindres presseurs (10). En l'occurrence, la surpression force le liquide à traverser les surfaces des enveloppes des cylindres, l'essorage final se réalisant sous l'effet de la pression lors du passage dans la fente de pince (11) entre les cylindres (10). La partie supérieure des cylindres (10) est enfermée dans un caisson (12) pourvu d'orifices d'alimentation (14) destinés à la suspension. L'évacuation de la bande de matière se fait sous la fente de pince (11), des couteaux nettoyeurs (16) étant disposés en relation avec chacun des cylindres (10), en dessous de la fente de pince (11). Le transfert de la matière essorée se fait par gravité.
Haggstrom Bert
Sundqvist Ingemar
Swardh Olof
Fetherstonhaugh & Co.
Sunds Defibrator Industries Ab
Valmet Fibertech Aktiebolag
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