| 摘要 |
<p>PROBLEM TO BE SOLVED: To provided a bellows hose having a long service life and unnecessary to do the complicated work for structuring an abrasion preventing structure. SOLUTION: The protecting member 39 is formed of an elastic spiral body made of nylon. The inner diameter of the protecting member 39 is formed smaller by 10-40 mm than the outer diameter of a recessed part 33 of a bellows body 15. The protecting body 39 is fitted along the recessed part 33 of the bellows body 15 to structure a flour force-feeding hose 9. When the protecting member 39 is worn, the protecting member 39 is removed from the bellows body 15, and a new protecting member 39 is fitted.</p> |
