Assembly to press out a mass through the perforations in a mantle wall of a rotating and cylindrical drum, has a ring groove around each perforation forming a stripping edge to prevent a build-up at the perforations

摘要

The assembly to press out flowable masses, from the interior of a rotating and cylindrical drum (1) through mantle perforations (2), forces the material out at the lower drum section to fall as droplets on to a moving conveyor belt to harden. Each of the openings in the drum mantle, which open into the mantle surface (34), is surrounded by a grooved recess (31), so that its walls (32) form a sharp rotating stripping edge (33). The assembly to press out flowable masses, from the interior of a rotating and cylindrical drum (1) through mantle perforations (2), forces the material out at the lower drum section to fall as droplets on to a moving conveyor belt to harden. Each of the openings in the drum mantle, which open into the mantle surface (34), is surrounded by a grooved recess (31), so that its walls (32) form a sharp rotating stripping edge (33). The openings are circular, and the recessed grooves are in a ring shape, with a triangular cross section.