Filtering device

Details Filtering device Filtering device

G - Physics

01

N

G01N 1/10 (2006.01) B01D 29/44 (2006.01) G01N 1/20 (2006.01) G01N 1/28 (2006.01) G01N 33/34 (2006.01)

Patent

CA 2406182

The invention relates to a filtering device for taking a filtrate sample from liquid matter containing solid particles. The filtering device comprises two filter parts (100, 102) and at least one filtering slot (108) between the filter parts (100, 102). The filter parts (100, 102) are adapted to move in relation to each other in such a manner that the width of the filtering slot (108) changes when the filter parts (100, 102) move in relation to each other. When taking a sample from a process, the filtering slot (108) between the filter parts (100, 102) is at its smallest, and it is adapted to filter the sample while the liquid matter being measured flows from the process to the measurement. When rinsing the filtering device against the sampling direction, the filter parts (100, 102) are adapted to move away from each other, whereby the filtering slot (108) widens.

L'invention concerne un dispositif de filtration pour prélever un échantillon de filtrat d'un liquide contenant des particules solides. Ce dispositif de filtration comprend deux parties filtres (100, 102) et au moins une fente filtrante (108) située entre les parties filtres (100, 102). Ces parties filtres (100, 102) sont adaptées pour bouger relativement l'une à l'autre, de manière à ce que la largeur de la fente filtrante (108) change lorsque les parties filtres (100, 102) bougent relativement l'une à l'autre. Lorsqu'un échantillon est prélevé au cours d'un processus, la fente filtrante (108) située entre les parties filtres (100, 102) est la plus petite possible, et est adaptée pour filtrer l'échantillon pendant que le liquide mesuré coule du dispositif du processus vers le dispositif de mesure. Lorsque le dispositif de filtration est rincé dans le sens opposé à celui de l'échantillonnage, les parties filtres (100, 102) sont adaptées pour s'éloigner l'une de l'autre, et ainsi la fente filtrante (108) s'élargit.

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