Walkway. Radial walkway supported at one end to the central pivot and rigidly joined at the other end to the driving carriage. Made essentially from two folded plates forming a drawer type beam (low section or medium section), two stainless steel handrails and a metallic galvanised passage framework.
Motor group. Located at one end of the walkway, and made up of a motor reducer and two wheels; one driving wheel and one driven wheel. Red-band type wheels, supported by ball bearings. Approximate peripheral speed. Vt= 1.4 m/min.
Bottom scrapper system. Made up of the bottom scrapper and its bracing system. The scrapper is continuous spiral type, made from steel plating, and it backs onto an elastomer section, which performs the scavenging. The scrapper moves on a set of wheels. Everything is braced and hangs from the walkway through stabilising and tightening tubes.
Scum scrapper system. Made up of a surface scavenging scrapper which, owing to its design, moves the floating matter towards the periphery, where a pivotable arm introduces the matter into the hopper.
Scum collection hopper. Installed on the periphery of the enclosure and anchored directly to the public works. Available in two versions; the outside type (standardised) and the submerged type. Made from steel plating.
Pivoting support. Hinged unit on which one of the ends of the catwalk rests. Rotation via large diameter bearing, designed to support those stresses that may cause small irregularities in the enclosure. Includes the collector ring for electrically supplying the motor.
Deflector feedwell. Welded steel plating. Intended to calm the water, distributing it evenly throughout the enclosure.
