| 摘要 |
PURPOSE:To prevent intrusion of solid into the space between sliding surfaces at the time of low speed rotation, in the title bearing for a solid-liquid mixing phase storage tank, by forming a stepped part by which the radii of a shaft forming the sliding surfaces of the turning shaft and the bearing are varied, and by arranging laminated rings to the different radius parts respectively. CONSTITUTION:Two parts 11, 13 having shaft radii different to each other are formed to the part forming the sliding surfaces of both a bearing 30 and a turning shaft 10 to which a spiral S and a sprocket wheel SW are fitted, and on the cylindrical surface of the larger diameter part, a circumferential groove 12 is formed. On the other hand, the parts of the bearing 30 corresponding to both parts 11, 13 of the turning shaft 10 are formed into a larger diameter part 31 and a reduced diameter part 33 respectively, and on the cylindrical surface of the reduced diameter part 33, a circumferential groove 32 is formed. And, to these grooves 12, 32, laminated rings 51, 52 are arranged respectively, and the outside diametral surface of the ring 51 and the inside diametral surface of the ring 52 are pressedly brought into contact with the cylindrical inside surface of the larger diameter part 31 of the bearing 30, and with the cylindrical outside surface of the reduced diameter part 13 of the turning shaft 10 respectively. By this constitution, intrusion of solid can be prevented even at a low speed. |
