Patent ID: 6592061
Filing Date: 2003-07-15
Classification: B02C

Abstract:
A roll crusher having a plurality of kinds of crushing teeth for crushing a material to be crushed on an outer periphery of a rotor driven to rotate, said roll crusher comprising:a cylindrical rotor body; a plurality of breaking teeth for crushing said material mainly by a wedge effect, said breaking teeth being installed on an outer periphery of said rotor body, and said breaking teeth each having a pair of wedge surfaces contiguous to each other with an angle converging in a rotational direction; a plurality of compression teeth for crushing said material mainly by a compressive effect, said compression teeth being installed on the outer periphery of said rotor body, and said compression teeth each having a plane portion; and a plurality of cutting teeth for crushing said material mainly by cutting, said cutting teeth being installed on the outer periphery of said rotor body, and said cutting teeth each having a cutting edge.