Through-flow cleaner with improved inlet section

Details Through-flow cleaner with improved inlet section Through-flow cleaner with improved inlet section

D - Textiles, Paper

21

D

D21D 5/24 (2006.01) B04C 3/00 (2006.01) B04C 3/06 (2006.01)

Patent

CA 2261677

A hydrocyclone (10) for separating lightweight contaminants from a suspension of papermaker's stock as a through-flow design in which an inlet section (12) has a frusto-conical flow controlling wall (50) and has a central flow stabilizer (55) and a tangential inlet (40). The flow stabilizer (55) has a paraboloid shape and defines with the flow control wall (50) an annular flow space (60) of constant area along the axial length of the flow stabilizer (55) so that fluid entering a tangential inlet (40) at the base of the paraboloid is caused to rotate about the flow stabilizer (55) and is delivered to the interior of the hydrocyclone (10) without a substantial change in axial velocity.

Cette invention concerne un hydrocyclone (10) destiné à séparer les contaminants légers d'une suspension de pâte à papier et conçu à la manière d'un dispositif à écoulement. Cet hydrocyclone est pourvu d'une section d'admission (12) ayant une paroi de régulation du débit (50) tronconique, un stabilisateur d'écoulement central (55) et une admission tangentielle (40). Le stabilisateur d'écoulement (55), de forme paraboloïde, définit avec la paroi de régulation du débit (50) un espace d'écoulement (60) annulaire de surface constante suivant la longueur axiale du stabilisateur d'écoulement (55), de façon à ce que le fluide entrant par l'admission tangentielle (40) à la base du paraboloïde, soit amené à tourner autour du stabilisateur d'écoulement (55) et soit transporté vers l'intérieur de l'hydrocyclone (10) sans changement sensible de sa vitesse axiale.

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