| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent a foreign matter from being mixed in collected dust at dust collection.SOLUTION: At dust collection, an operator inserts a cylindrical insertion pipe 5 into a through hole 3 formed in the periphery of a gas duct 1. Then, the operator inserts a collection device 6 in which a collection port 16 is provided in a tip part of a long member 15 into the insertion pipe 5. Then, the dust included in gas which flows through the gas duct 1 is collected with the collection port 16 of the collection device 6 inserted in the insertion pipe 5.</p> |
