| 摘要 |
PURPOSE:To easily adjust the transfer quantity of powder by forming a gentle inclined portion for stopping self-run of powder at the lower end of one powder transfer pipe to be connected to the other powder transfer pipe, and opening a conveying gas blowing nozzle in the gentle inclined portion. CONSTITUTION:The first powder transfer pipe 6 is erected with a gradient in such a manner that powder drops naturally. In this case, a gentle inclined portion 7 for stopping the self-run of powder is disposed at the lower end of the powder transfer pipe 6. The gentle inclined portion 7 is set with a designated gradient and length in such a manner that powder particles are not self-run, but stopped, connected direct to the lower end of the powder transfer pipe 6 and substantially horizontally projected laterally by a length l. The forward end portion of the gentle inclined portion 7 is coupled to the second powder transfer pipe 8 through a connecting pipe 9. A conveying gas supply pipe 10 is inserted in the gentle inclined portion 7, and a conveying gas blowing nozzle is opened. In this arrangement, the transfer quantity of powder in the powder transfer pipe 8 can be easily adjusted to improve control ability. |
