Patent ID: 9327286
Filing Date: 2016-05-03
CPC Classification: B02C

Claim Text:
1. Mill for grinding rubbish, comprising: one or more grinding chambers each defined by a side wall and by a floor, each grinding chamber comprising at least two rotors rotatable about respective, substantially vertical axes, each of the rotors comprising a hub and a plurality of chains connected to the hub, the plurality of chains for each of the rotors, during rotation of the rotors, configured to sweep over part of the grinding chamber; and one or more suction chambers divided from each grinding chamber by means of grilles, the one or more suction chambers being kept under vacuum by means of a suction plant; wherein a grinding volume is defined for each of the at least two rotors of each grinding chamber, the grinding volume of each of the rotors defined by axially interpolating a circumference inside which the plurality of chains of the rotor correspondingly rotate; wherein each of the at least two rotors of each grinding chamber is spaced such that the grinding volumes of the rotors are separate so as not to overlap; wherein the side wall of each grinding chamber is shaped so as to precisely follow profile of the grinding volumes of the at least two rotors of the grinding chamber; and wherein the vertical axes of the at least two rotors of each grinding chamber are fixed relative to each other and the side wall of the grinding chamber.