G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 1/20 (2006.01) G01N 1/10 (2006.01) G01N 1/04 (2006.01)
Patent
CA 2301901
The invention relates to a device for collecting filtrate samples from a pulp suspension. It comprises a piston rod (3) which, when actuated by a cylinder (2), can reciprocate inside a jacket (5) and which is provided with a filter (4) arranged in an extended position to catch a sample. The filter (4) consists of a wire (6) having a triangular cross-section, the turns (8) of the wire being located close to each other and having their base surface (9) directed outwards and their converging surfaces directed inwards towards the center of the filter (4). During its retracting movement into the jacket the filter (4) is cleaned in the way that fibres which have got stuck on the filter are scraped away by the jacket.
L'invention concerne un dispositif permettant de recueillir un échantillon de filtrat d'une suspension de pâte à papier. Ce dispositif comprend une tige de piston (3) animée d'un mouvement de va-et-vient dans une enveloppe (5) à l'aide d'un cylindre (2) et dotée d'un filtre (4) destiné, en position externe, à piéger un échantillon. Le filtre (4) est composé d'un fil triangulaire (4). Les tours (8) de ce fil sont juxtaposés de telle façon que leur surface de base (9) soit tournée vers l'extérieur et que leurs surfaces convergentes soient dirigées vers l'intérieur et orientées vers le centre du filtre (4). Lors de son mouvement de rétraction dans l'enveloppe, le filtre (4) est nettoyé en ce sens que les fibres fixés sur le filtre sont raclés par l'enveloppe.
Btg Kalle Inventing Ab
Fetherstonhaugh & Co.
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