| 摘要 |
The present invention relates to a pressure filter for thickening treating a solids suspension comprising a container having a feed conduit provided with a feed pump for introducing a suspension to be filtered under pressure and an outlet conduit for discharging the thickened suspension from the bottom of the container and a plurality of tubular filtering elements suspended from a horizontal support plate, through which elements filtrate flows and the interior of which elements communicates with a filtrate chamber located on the opposite side of the support plate, and the filtrate is arranged to be discharged during a filtering stage via a filtrate outlet conduit exiting from the filtrate chamber, and the filtering elements collect on their outer surface solid matter that is arranged to be periodically released by making the filtrate in the filtrate chamber pass counter-currently through the filtering elements and to settle onto the bottom of the container. A cylindrical piece is arranged in the container below the filtering elements and the feed conduit is connected to the cylinder for leading the suspension into the interior of the cylinder. The pressure filter is applicable for use at the causticizing plant of a chemical pulp mill. |
