| 摘要 |
PROBLEM TO BE SOLVED: To prolong a lifespan of a flexible barrel member for connecting pipes without causing any local damage on the pipes.SOLUTION: In a powder transfer joint, an upper pipe 11 and a lower pipe 12 which oppose each other with a space therebetween in a vertical direction are connected via a flexible barrel member 13, and the flexible barrel member 13 is bent by the relative vibration of the upper pipe 11 and lower pipe 12 which result from operations of vibratory equipment to form a powder transfer duct line from the upper pipe 11 to the lower pipe 12. The upper pipe 11 is composed of an outer pipe 14 whose outer diameter is identical to that of the lower pipe 12 and an inner pipe 15 provided therein in a plan view, and the outer pipe 14 is connected to the lower pipe 12 by the flexible barrel member 13 to make the powder pass through the inside of the inner pipe 15, thereby suppressing powder from colliding with the flexible barrel member 13. |
