Title:
排水路付き閉塞栓と、これを用いた下水管洗浄時の枝管排水方法
Document Type and Number:
Japanese Patent JP6940430
Kind Code:
B2
Abstract:
To provide a blocking plug with a draining channel which water-tightly blocks a suited part in a branch pipe jointing to a sewer pipe in a washing section, in a washing process of a section formed by optionally dividing the sewer pipe in the longitudinal direction, before lining a synthetic resin regenerated pipe to the inner wall of a deteriorated existing sewer pipe, and which drains sewage from the branch pipe to outside the washing section of the sewer pipe.SOLUTION: A blocking plug comprises: a rigid draining channel 2 having a flow-in port 2a at an upper end and a flow-out port 2b at a lower end; an interior bag 3 inflatable/contractible by flow-in and flow-out of air provided around the draining channel 2; an exterior bag 4 covering the bag 3 for restricting inflation thereof and protecting the same; a sleeve 5 elastic in the thickness direction and attached to a circumference of the exterior bag 4; and a long flexible tube 6 connected to the flow-out port 2b of the draining channel 2.SELECTED DRAWING: Figure 8
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Inventors:
Takamura Mitsuru
Sadayoshi Sugiura
Sadayoshi Sugiura
Application Number:
JP2018031998A
Publication Date:
September 29, 2021
Filing Date:
February 26, 2018
Export Citation:
Assignee:
Kurodite Industry Co., Ltd.
International Classes:
E03F7/02; E03B7/00; E03F9/00; F16L55/128
Domestic Patent References:
| JP2011132992A | ||||
| JP2013023955A | ||||
| JP7173866A | ||||
| JP3019771U | ||||
| JP2017057996A | ||||
| JP5272166A | ||||
| JP2018194020A |
Foreign References:
| EP3406388A1 |
Attorney, Agent or Firm:
Takamitsu Shimizu