Fine material screw washer
OwnerLeo H. Bassettinventor
Life of this patent
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Abstract
A screw-type fine material classifier or washer having externally mounted support bearings with the ends of the screw extending through the end walls of the tank and waterproof seals. The bearings and seals being adjustable so that the screw may be moved both vertically and horizontally to adjust the clearance between the screw and the belly pan of the washer.
Claims7
A fine material screw washer comprising a longitudinal tank having a belly pan therein, upper and lower end walls, a spiral screw extending longitudinally in the tank in close proximity to the belly pan, the screw having a support shaft at each end thereof which extends through openings in the upper and lower end walls of the tank, support bearings for said shaft positioned on the outside of the end walls for supporting the screw, the improvement comprising:
- adjustment means associated with each support bearing allowing separate horizontal and vertical movement of the bearing to adjust the clearance between the screw and the belly pan;
- an adjustably movable seal plate positioned over the opening in the lower end wall including a seal therebetween, an aperture in the seal plate for passage of the support shaft;
- and
- a flexible shaft seal attached to the seal plate approximate the aperture surrounding the support shaft whereby as the bearing requires horizontal or vertical adjustment, the seal plate can be adjusted in a like manner.
Dependencies are inferred from the claim text.