Pressure filter with vibrator

B - Operations – Transporting – 01 – D

Patent

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Details

B01D 29/72 (2006.01) B01D 33/03 (2006.01) D21D 5/02 (2006.01)

Patent

CA 2704047

The device according to the invention serves for classifying or concentrating liquids laden with fibres or solids by means of screening or filtration. For this purpose, a cylindrical fine screen is arranged in a vertical position in a housing comprising an axially cylindrical vibrator being somewhat smaller than the fine screen so as to produce an annular gap between the screen and the vibrator. In the vibrator, there is a vibration motor with imbalances, which generates circular horizontal oscillations. The liquid to be treated is introduced into the annular gap, primarily from above, and the concentrated liquid is removed at the bottom. The cleaned liquid is discharged between the screen and the wall of the housing. The feature of the invention is that the vibrator is mounted on at least three rubber elements which primarily allow the vibrator to perform a circular horizontal movement. However, by allowing the vibrator to move away vertically, these rubber elements also compensate for occurring vertical forces caused by unsymmetrical loads on the screen.

Le dispositif de l'invention sert à classer ou à concentrer des liquides chargés en fibres ou en matières solides au moyen d'un tamisage ou d'un filtrage. A cet effet, un filtre fin cylindrique est disposé dans un boîtier dans une orientation verticale, le filtre fin contenant un vibrateur axialement cylindrique de taille un peu inférieure à celle du filtre fin, un espace annulaire étant ainsi formé entre le filtre et le vibrateur. Dans le vibrateur se trouve un moteur de vibration comportant des masses non équilibrées et produisant des oscillations horizontales circulaires. Le liquide à traiter est introduit en priorité par le dessus à l'intérieur des espaces annulaires et le liquide concentré est prélevé par le dessous. Le liquide purifié est évacué entre le filtre et la paroi du boîtier. L'invention se caractérise en ce que le vibrateur est monté sur au moins trois éléments en caoutchouc qui confèrent au vibrateur en majorité un mouvement horizontal circulaire. Ces éléments en caoutchouc permettent également, par le dégagement vertical du vibrateur, la compensation des forces verticales qui peuvent apparaître sous l'effet de contraintes asymétriques de filtre.

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