Abstract: A pressure filter for treating liquor suspensions of a cellulose pulp mill, the pressure filter including a container having 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 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 cleaned by wash liquid passing 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 above the middle of a filtering element for distributing the flow from the filtrate chamber onto the filtration surface of the filtering element.

Abstract: A vessel for a pressure filter including: a support plate dividing the interior of the vessel into an upper (filtrate) chamber and a lower chamber; filtering elements extending from the support plate into the lower chamber; a feed cylinder within the lower chamber and below the filtering elements, the feed cylinder including an annular interior surface and a feed opening at the interior surface, wherein the feed opening connects to a feed conduit extending from the feed cylinder to an external source of a pressurized sources of a solids suspension; a horizontal gap between the perimeter of the feed cylinder and the lower chamber, and an outlet conduit below the feed cylinder and configured to discharge from the lower chamber solids from the solids suspension entering the lower chamber through the feed opening in the feed cylinder.

Abstract: A pressure filter for treating liquor suspensions of a cellulose pulp mill, the pressure filter including a container having 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 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 cleaned by wash liquid passing 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 above the middle of a filtering element for distributing the flow from the filtrate chamber onto the filtration surface of the filtering element.