Device for dewatering solid/liquid suspensions, especially...

Details Device for dewatering solid/liquid suspensions, especially... Device for dewatering solid/liquid suspensions, especially...

D - Textiles, Paper

21

F

D21F 1/80 (2006.01) D21F 3/04 (2006.01)

Patent

CA 2294903

The invention provides a device for dewatering solid/liquid suspensions which improves on conventional devices having a multiplicity of deflection and press rolls which results in a large and expensive machine. The present invention provides a device for dewatering solid/liquid suspensions, the device comprising a pair of belts defining at least one dewatering zone, said dewatering zone including a wedge zone, and roll means for imparting both area pressure and line pressure on the pulp web formed by the pulp suspension, said roll means comprising a first and a second roll.

L'invention concerne un procédé pour déshydrater des suspensions à base de solides et de liquides, notamment des suspensions à base de fibres. La suspension est déshydratée entre deux bandes (4, 5), une zone de déshydratation se présentant sous forme de zone cunéiforme. Ce dispositif se caractérise principalement en ce que la paire de rouleaux (21, 22) montée en aval exerce aussi bien une force de compression superficielle qu'une force de compression linéaire sur la bande de matériau formée à partir de la suspension à base de fibres.

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