Patent ID: 6758342
Filing Date: 2004-07-06
Classification: B07B

Abstract:
A cereal grain sorting system comprising: a wind force sorting device operative for selectively sorting light weight foreign materials from feedstock cereal grains; a rough sorting device operative for selectively removing foreign materials having different diameters from the standard one from the feedstock cereal grains; and a roll sorting device operative for selectively removing foreign materials having different forms from the standard ones from the feedstock cereal grains having been subjected to said wind force sorting step as well as to said rough sorting step, the roll sorting device including at least one endless belt unit having an endless belt wrapped about an upper roll and a lower roll disposed apart from and below the upper roll as viewed in elevation such that an upper surface of the endless belt inclines upwardly from the lower roll to the upper roll as viewed in a belt moving direction and inclines transversely relative to the belt moving direction and downwardly from a feedstock supply side of the endless belt to a feedstock discharge side of the endless belt wherein the upper roll inclines downwardly relative to the feedstock supply side at a first downwardly inclination angle and the lower roll inclines downwardly relative to the feedstock supply side at a second downwardly inclination angle thereby resulting in a twisted endless belt surface twisting from the lower roll at the feedstock supply side to the upper roll toward the feedstock discharge side while the upper surface of the endless belt inclines upwardly and moves from the lower roll to the upper roll.