| 主权项 |
1. A tub grinder comprising:
a floor; a tub positioned above the floor, the tub having a side wall, the tub being rotatable relative to the floor about a vertical axis; a rotatable reducing unit mounted at an opening in the floor, the rotatable reducing unit having outermost portions that define a circular reducing boundary when the rotatable reducing unit is rotated in a reducing direction; a screen positioned beneath the rotatable reducing unit; and a deflection structure positioned near the floor above the rotatable reducing unit, the deflection structure including first and second deflecting portions, the first deflecting portion being positioned upstream from the second deflecting portion, the first deflecting portion including a first and a second end, wherein the first end is positioned proximate to the floor and the second end is positioned proximate to the second deflecting portion, the first deflecting portion extending upwardly at an increasing distance and angling away from the circular reducing boundary from the first end to the second end, wherein the first end of the first deflecting portion is positioned in closer proximity to the reducing boundary than the second end of the first deflecting portion, the second deflecting portion extending away from the first deflecting portion in the reducing direction, the second deflecting portion angling towards the reducing boundary as the second deflecting portion extends in the reducing direction, wherein at least part of the second deflecting portion is located below a top, dead center of the reducing boundary of the grinder. |
