| 摘要 |
<p>PROBLEM TO BE SOLVED: To make a fluid coming from a flow-in pipe flow down into a pipe main body par by erecting a guide plate in which an elastic material is mounted on a side edge along an longitudinal direction so as to close he inner curcumferential surface of a pipe main body. SOLUTION: Drainage M coming from a sewer pipe into a manhole flows from a flow-in pipe into a pipe main body part 11. A guide plate 15 wherein an elastic body 16 is mounted along a longitudinal direction on a side edge is erected from the vicinity of an upper end part of a spiral guide passage 12 upward in a side of an air core cylinder 13 so as to close the inner circumferential surface of the pipe main body 11. The drainage M is shut out by the guide plate 15 of a condition in which rotation is obstructed with an abrasion resistance on an inner circumferential surface of the pipe main body part 11 by the elastic body 16, and flows in only one direction along a circumferential direction, and thereby, the drainage M is guided so as to smoothly circulate along the turning direction of the spiral guide passage 12. The drainage M collides with the guide plate 15, and thereby, damping is more carried out.</p> |
