Arrangement of tight-fitting screw conveyors

摘要

An arrangement including two conveyor screws which are arranged rotatably moveably relative to each other for processing a pasty material like a foodstuff product or the like, having a first conveyor screw and a second conveyor screw which have interengaging helical flights and which in particular are drivable in opposite relationship. The conveyor screws are of different size diameters and/or the conveyor screws have a different number of flights. In addition, the surfaces of the interengaging flights are so shaped and matched to each other that they are in contact with each other along a substantially continuous contact line extending substantially in the longitudinal direction of both conveyor screws to hinder, preferably prevent a return flow of the pasty material.

主权项

1. An apparatus for processing a foodstuff, the apparatus comprising:
first and second conveyor screws that are arranged to be rotatably movable relative to each other to process the foodstuff, the first and second conveyor screws including respective helical flights that are interengaged and drivable in opposite relative directions, and the first and second conveyor screws have different outside diameters, a different number of helical flights, or both, wherein the helical flights of the first and second conveyor screws each have an outer surface, the outer surfaces being respectively shaped and matched relative to each other, and the outer surfaces being in contact with each other along a substantially continuous contact line extending substantially in a longitudinal direction of the first and second conveyor screws so that a return flow of the foodstuff is hindered.