| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent powder on a shaft seal side from staying, by forming a jetting hole in a hollow shaft in a state corresponding or non-corresponding to a bush provided in a mating ring for partitioning the shaft seal side and a container body side.SOLUTION: A shaft seal structure is provided with: a pipeline (174) or jacket (170) disposed in a hollow shaft (118); and a first jetting hole (172) formed into the shape of the hollow shaft (118), and disposed in a state corresponding or non-corresponding to a bush (145 or 147). In the shaft seal structure, fluid jetted from the pipeline (174) or jacket (170) is jetted toward the bush (145 or 147) through the first jetting hole (172).</p> |
