Classifying – separating – and assorting solids – Sifting – Plane sifters
Patent
1996-06-20
1999-05-18
Nguyen, Tuan N.
Classifying, separating, and assorting solids
Sifting
Plane sifters
209399, 209405, B07B1/28
Patent
active
059042540
ABSTRACT:
A vibratory particle separating apparatus for separating a supply of particulate material into two streams according to particle size. The apparatus includes an inclined particle separating screen secured in a mount frame and characterized by multiple steps disposed perpendicular to the path of material flow. The mount frame is suspended in a support frame by resilient float mounts and vibrated by a vibratory motor mounted on the mount frame. The particulate material is loaded on the top inclined end of the vibrating screen and as the material cascades down the steps of the screen, particles smaller than a selected size fall through one of multiple, adjacent openings provided in each step and are collected or discharged for further processing in a stream below the screen, whereas larger particles are collected or discharged in a separate stream at the foot of the screen. In another embodiment the float mounts can be adjusted to vary the vibratory motion of the screen and thereby optimize particle separation according to the characteristics of the material. In still another embodiment the openings are omitted from a step or steps in the top inclined end of the screen, such that elongated particles such as sticks being loaded on the screen must lie flat and slide down to the foot of the screen instead of sliding through the openings and mixing with the smaller particles being separated from the material.
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Hendrick Flanged Lip Granular Material Screen Catalog with Screen Specification--Carbondale, Penn., 1948.
Begley Philip E.
Blank Christofer B.
Gathright Gary G.
Price Justin R.
Tinsley Douglas M.
Harrison John M.
Nguyen Tuan N.
Tinsley, Inc.
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