A screen

• Main Authors: Cajee, Yusuf, Coleman, Steven Paul, Solomon, Ian Robert, Lazzarini, David John
• Format: Patent
• Language: English
• Published: 19.03.2020
• Subjects: OTHER SEPARATING BY DRY METHODS APPLICABLE TO BULK MATERIAL,e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL; PERFORMING OPERATIONS; SEPARATING SOLIDS FROM SOLIDS; SEPERATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, ORSIFTING OR BY USING GAS CURRENTS; SORTING; TRANSPORTING

A screen (10) includes a support structure (14). A plurality of elongate screening elements (18, 20) is arranged in spaced relationship transversely on the support structure to define elongate screening apertures (22) between adjacent screening elements (18, 20). Each screening element (18, 20) has a screening head (31, 34) defining a screening surface (24, 26), the screening surfaces (24, 26) all being at the same height relative to the support structure (14). Adjacent screening elements (18, 20) are of different widths relative to each other with a transverse dimension of the aperture (22) being less than a width dimension of the wider screening element 18. The screening head (31) of the wider screening element (18) is shaped to maintain a substantially constant screening aperture (22) between the screening elements (18, 20) during a predetermined amount of wear of the wider screening element (18).