Screening arrangement

Claim 1

A screening panel molded of a suitable synthetic plastics material and having screening apertures and which is adapted to be secured to a support frame in a side-by-side abutting relationship with similar panels, in which the panel has a periphery which includes at least two sides which are substantially parallel to each other, and ridges of an angular cross-sectional configuration on the substantially parallel sides projecting above the screening surface of the panel so that the ridges are spaced from each other along the two substantially parallel sides along the periphery of the panel, and which panel includes grooves in the ridges leading directly into screening apertures in the panel, the grooves being positioned at an angle to the longitudinal axis of the panel so that when liquid flowing across the panel and across the ridges strikes against the sides of the grooves, the liquid is deflected directly into the screening apertures, and wherein the ridges on the panel are so arranged that, when two such panels are fitted on a support frame in a side-by-side abutting relationship, the ridges on adjacent panels abut each other to thereby form a larger ridge of double the cross-sectional configuration than that of a single ridge.