Patent ID: 8662432
Filing Date: 2014-03-04
Classification: B02C

Abstract:
1. A trunnion seal assembly for a ball tube mill comprising: a) a stationary ring component configured to be mounted around an inlet/outlet passage of a ball tube mill; b) a flexible pad seal joined to the stationary ring component, the pad seal including a first annular sealing surface; c) a mill head extension ring configured to be joined to a rotational mill head proximate to and substantially concentric with the stationary ring component, the mill head extension including a second annular sealing surface sealingly engaged with the first annular sealing surface of the flexible pad seal, the first and second annular sealing surfaces forming a seal to discourage passage of particles within the mill passing into the surrounding air; d) an outer ring component mounted to the stationary ring component, the outer ring component including an outer filler body defined along a chord of a circle defined by the inner circumference of the outer ring component, the outer filler body defining a triangular base; and e) an inner ring component including an inner filler body defined along a chord of a circle defined by the inner circumference thereof, the inner filler body defining a triangular apex, the inner ring component being joined to the outer ring component substantially concentrically with the inner and outer filler bodies defining a filler having a substantially triangular cross-sectional profile defined by the triangular base and apex.