FIELD: machine building.
SUBSTANCE: proposed invention relates to screw elements for multiple shaft screw machines with screw shafts pairwise rotating in one direction and cleaning each other, to the usage of screw elements in multiple shaft screw machines and to the method of screw elements manufacturing. Technical result is reached by the screw elements for multiple shaft screw machines with screw shafts pairwise rotating in one direction and pairwise accurately cleaning each other by scraping and having two or more screw strokes. At that the screw profiles along the whole cross-section can be presented as a continuously differentiable curve of the profile. The screw profile along the whole cross-section consists of four or more circular arcs and the circular arcs in their starting and finishing points pass into each other tangentially.
EFFECT: improved dispersancy effectiveness at minimum power supply.
13 cl, 28 dwg
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