| 摘要 |
PURPOSE:To provide a pipe internal passage blocking tool which can be easily inserted to an optional position of a pipe, and surely and temporarily block the passage in this position, whereby satisfactory cleaning, for example, by chemical cleaning can be performed. CONSTITUTION:In a pipe internal passage blocking tool which is inserted into a fluid pipe in such a manner as to be attachable and detachable to temporarily block the passage in the pipe, it has a flexible tube 10 inserted at least into the pipe in such a manner as to be attachable and detachable, and an expansible and contractible balloon member 30 mounted on its top part 11. The flexible tube 10 has a plurality of through-holes 20 on at least the side circumferential surface 11a of the top part 11, and the balloon member 30 is mounted in the form of covering the side circumferential surface 11 having the through-holes 20. The balloon member 30 is laid in the contracted state along the top part side circumferential surface 11a of the flexible tube 10 and in the state expanded from the top part side circumferential surface 11a by a fluid such as the air carried into the balloon member 30 from the flexible tube 10 through the through-holes 20. |
