Filtering screens for vibratory separation equipment
AssigneeUnited Wire Limited
InventorsGordon James Cook, Robert Ian Thomson
Life of this patent
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Abstract
A filtering screen comprises a fine woven wirecloth filtering mesh (4) disposed above a coarse woven wirecloth support mesh (2). An intermediate woven wirecloth mesh (3) is disposed between the fine woven mesh (4) and the coarse woven mesh (2). the intermediate mesh (3) extending over a proportion of the area therein at outwards the rear thereof, said proportion being in the range of 20% to 40% of the area of the screen, and preferably substantially one third of the area of the screen.
Claims5
A filtering screen comprising a fine woven wirecloth filtering mesh disposed above a coarse woven wirecloth support mesh, wherein an intermediate mesh, made of woven wirecloth, a woven synthetic plastics material or a perforated synthetic plastics material, is disposed between the fine woven mesh and the coarse woven mesh, the intermediate mesh extending over a proportion of the area of the screen at or towards the rear thereof, said proportion being in the range of 20% to 40% of the area of the screen.
A filtering screen according to claim lor 2, wherein the three meshes are differentially tensioned and retained in a frame.
A filtering screen according to any of the preceding claims, wherein the intermediate mesh has a mesh count smaller than the fine mesh and larger than the coarse mesh.
Dependencies are inferred from the claim text.