Apparatus for the separation of mixtures of materials of different consistencies such as meat and bone.

摘要

Apparatus for the separation of mixtures of materials of different consistencies, such as meat and bone, or sewage containing solid material, comprises a positive displacement pump (28) feeding the pressurised mixture to a separator (70) which can be separate from the pump or an integral part of its structure. The pump comprises a rotary vaned pump with radially-moving vanes (54a, 54b) of fixed length operating with both their ends always in sealing engagement with the wall of an internal cam (38) also constituting a wall of the pump chamber. The vanes are provided with cutting edges (64) able to shear material such as bone that enters the pump, so that the pump is not jammed thereby.