초록 ▼

An apparatus is disclosed for separating material by length into first and second fractions containing, respectively, material longer than a specified length and material shorter than a specified length. The apparatus includes a plurality of generally parallel shafts having disks attached thereto. T

An apparatus is disclosed for separating material by length into first and second fractions containing, respectively, material longer than a specified length and material shorter than a specified length. The apparatus includes a plurality of generally parallel shafts having disks attached thereto. The disks are spaced on the shafts a distance approximately equal to one-half the specified length. Shaft diameters and shaft spacings are selected to cause material in the first fraction to remain supported by the shafts and to flow along the shaft surfaces from one shaft to the next adjacent downstream shaft, while material in the second fraction tilts and falls downwardly between adjacent shafts.

대표청구항 ▼

An apparatus for separating a volume of material into first and second fractions, said first fraction including material longer than a specified length, and said second fraction including material shorter than a specified length, said apparatus comprising: a screening bed for effecting the separatio

An apparatus for separating a volume of material into first and second fractions, said first fraction including material longer than a specified length, and said second fraction including material shorter than a specified length, said apparatus comprising: a screening bed for effecting the separation into said first and second fractions; inlet means for providing a flow of material to be separated on said screening bed; a first receiving means for receiving said first fraction which passes over said screening bed; a second receiving means for receiving said second fraction which passes through said screening bed; and said screening bed including; a plurality of adjacently disposed, substantially parallel shafts; each of said shafts having a plurality of disks disposed thereon, the spacing between adjacent disks on a shaft being approximately equal to one-half said specified length; said disks on adjacent shafts being positioned to form pairs of minimally spaced disks including one disk from each of the adjacent shafts; adjacent pairs of disks being spaced a distance approximately one-half said specified length; the diameters of said shafts, and the spacing between adjacent shafts being selected to cause material longer than said specified length to ride along the surfaces of said shafts from one to another, as said shafts rotate, while causing material shorter than said specified length to fall between adjacent shafts; and drive means for rotating said shafts as material is fed onto said screening bed.