| 摘要 |
PURPOSE:To improve abrasion-resistance properties of an overflow pipe, by putting an insert pipe, which is of a removable structure and to the end of which an overflow plate made of ceramic is fitted, together with an overflow plug, into the titled overflow pipe. CONSTITUTION:An insert pipe 3 is put into an overflow pipe 5. An overflow plate 2, made of ceramic, is fitted by bolts 4 to the end of an insert pipe 3. The conical top of an overflow plug 1 is made of ceramic, and a connecting pipe 10 is provided in the middle part of the plug 1. In such a constitution, the overflow pipe 5 is prevented from wearing to be caused by the air blown into the pipe from a compressed air pipe line, by making the top of an overflow plug 1 and the overflow plate 2 of ceramic material. In addition, replacing time for the parts is shortened, because the overflow plug and the plate are of easily removable structure. |
