| 摘要 |
<p>A pressure filter for treating liquor suspensions of a cellulose pulp mill, said pressure filter including a container having a number of tubular filtering elements suspended in a horizontal plate, through which elements filtrate flows and the interior of which communicates with a filtrate chamber located above. The filtrate is arranged to be removed during the filtration stage via a filtrate discharge conduit extending from the filtrate chamber. The filtering elements collect on their outer surface precipitate that is arranged to be periodically removed by making the filtrate in the filtrate chamber travel counter-currently through the filtration surface of the filtering elements. The filtering elements are arranged to be periodically cleaned by making the wash liquid to pass from the filtrate chamber into the filtering elements and through their filtration surface. The interior of the filtering elements is provided with a flow distributor that is arranged above the middle part of a filtering element for distributing the flow from the filtrate chamber onto the filtration surface of the filtering element.</p> |
