Rotofilt developed automatic vertical pressure filter. These vertical pressure filters are-most efficient and economic solution for solid/liquid separation. Rotofilt`s test facilities are available for laboratory and pilot scale testing. The test filtration provides produces dewatered solids and filtrate samples with slurry obtained directly from the client`s process. With the push of button, filter plates close, closed chambers are formed. Pressurised pumping of slurry into all chambers simultaneously takes place. Working of this vertical pressure filter is given as follows: as filtrate permeates the filter cloth, cakes are formed. High-pressure water fills all chambers, inflates diaphragm, squeezing the already formed cakes with 4 to 5 times higher pressure than feed pressure. For higher pressure and increase filter efficiency is allowed by, ttightly woven filter cloth allows for higher pressure and increase filter efficiency. Wash liquid is evenly distributed for uniform cake washing, aas the plates are horizontal, wash liquid is evenly distributed for uniform cake washing. High-pressure water is pumped in simultaneously to all chambers, squeezing all the wash liquid through cakes with total displacement wash. In all chambers simultaneously through adjusting pressure and duration of air, ccompressed air is blown through cakes in all chambers simultaneously through adjusting pressure and duration of air, further minimizes the moisture. All filter plate packs open with advancement of filter cloth all solids are discharged automatically.
