ADVANCED JIGGING APPARATUS

摘要

Apparatus (1) for wet jigging comprises an conical displacement member (8) forming a floor of the hutch chamber (7), reciprocated by a actuating mechanism (10) to deliver succesive positive pulses in water into the hutch chamber jigging screen (3). A pumping chamber (11) is formed below the cone, one-way valves (12) in the wall of the pumping chamber for draw water into the pumping chamber when the cone rises, one-way valves (14) in the cone for transfer water from the pumping chamber to the hutch when the cone falls and a make up water is supplied at (16) into the hutch. A supplementary supply at (17) is provided to the pumping chamber to prevent cavitation. A normally fixed underpass barrier (35) and a movable vent (43) controlled by an interface level detector (44) are provided at the discharge end (6).