| 摘要 |
PURPOSE:To extremely decrease wear of a side wall part and rotary bottom part in a barrel tank and widely increase a life of the barrel tank, by equipping the second gap, in larger width than of a gap between the rotary bottom part and the side wall part, in the side wall part of the barrel tank. CONSTITUTION:The lower side opening of a side wall part 8 in a barrel tank 12 is closed by a disc shaped rotary bottom part 10 rotataly supported to a frame 2. A gap 23 is provided between the peripheral edge of the rotary bottom part 10 and the side wall part. The side wall part 8 is constituted in a vertical divided state, and the second gap 25, circumferentially provided and in width larger than of the gap 23, is formed between the first side wall part 4 and the second side wall part 6. A urethane rubber layer 34 is provided in the inside of the tank 12. A small element 46 of a work 44 is difficult to be bitten by the gap 23 and easily discharged to the outside of the tank 12 through the gap 25, in this way, a bitten state is not caused even for generation of stopping. |
