To provide a volume reduction apparatus that is capable of enhancing a volume reduction efficiency by surely carrying out the descending feed of a material to be treated supplied from a feed hopper at the upper part of a cylinder into a volume reduced gap.
The volume reduction apparatus is provided with a driving part and a volume reduction part that is driven by the driving part.The volume reduction part comprises a rotor that is rotatively driven by the driving part and a cylinder that stores the rotor, wherein the many crushed grooves are scored in the inner periphery of the cylinder at up and down direction. The volume reduction gap to reduce a volume of the material to be treated is formed between the rotor and the cylinder at the bottom part, wherein a vane for sweeping is formed in the rotor. The inclined angle of the side part of the blade for sweeping at the profile is set to become a larger angle at the feeding part side in the upper part and is set to become a smaller angle at the side of the volume reduction gap in the lower part so that it is approximately contacted along with the inner periphery of the cylinder.
NOMURA NAOKI
TSUMOTO HIROYUKI
