FI750093

Improvements introduced in a device for separating and dehydrating the solids, generally spongy, of the liquid in sewage water, food processing, meat packaging and the like, whose device includes a cylindrical screen having a screening medium around its outer periphery formed by bars generally parallel, spaced and arranged circumferentially, surrounding a generally open interior, means supporting the screening means for rotation about a generally horizontal axis so that the surface of the screening means ascends on one side and descends on the other, means for rotating the screener means, a headbox containing a liquid-solids medium to be separated directly adjacent to the surface of the screener means and opening against the upward side of the same above a horizontal plane through its geometric axis, a discharge of solids contiguous to the external surface of the screener medium and separated from the head box in the direction of its rotation and beyond a vertical plane through its geometric axis, transporting the movement of the screener medium the solids separated from the head box towards the discharge of solids, passing most of the liquid through the screener medium in the head box and falling freely in a cascade effect column to the lower area of the screening medium towards the inner surface of the medium, mainly in an area on the ascending side below of the horizontal plane through its axis, each of the bars forming the screening means having a generally flat outer face which, as a group, form a cylindrical and generally smooth outer surface with limited openings between the adjacent bars to effect a maximum separation next to the head box followed by the transport of the separated solids to the discharge of solids, having the bars sides divergent s inwardly defining cleaning channels that open upwards in the lower part of the cascade effect column, defining the side of a bar an angle comprised with the opposite side of an adjacent bar greater than about 14º and less than about 90º, the ratio of the diameter of the screen to the thickness of the radial bar being not less than approximately 75. (Machine-translation by Google Translate, not legally binding)