Mixing screw for ice-cream production apparatuses

摘要

The invention relates to a screw for apparatuses for ice-cream production with a vertical whipping vessel. The screw comprises at least one supporting metal blade, fixed to a rotating hub and carrying clutches for removably and substitutably fixing thereon a scraping vane. The screw may further comprise at least a mixture spreading vane acting in cooperation with said scraping vane.