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BACKFLOW PREVENTION BASIN
To provide a backflow prevention basin that prevents intrusion of drainage flowing back through a drainage pipeline to an upstream side, while suppressing occurrence of drainage clogging due to filth even when an amount of the drainage is small.SOLUTION: A backflow prevention basin 10 is provided in the drainage pipeline connecting an indoor drainage facility and a sewer pipe. The backflow prevention basin 10 comprises: a catch basin body 11; an inflow pipe part 12 and an outflow pipe part 13 for drainage provided on a side wall of the catch basin body 11; and a backflow prevention valve 14 provided in the catch basin body 11. The backflow prevention valve 14 has a valve body 141 configured to be able to close a downstream opening 12b of the inflow pipe part 12. A downstream side pipe bottom of the inflow pipe part 12 is located below an upstream side pipe bottom of the inflow pipe part 12.SELECTED DRAWING: Figure 2
【課題】排水管路を逆流する排水の上流側への侵入を防止する逆流防止マスにおいて、排水量が少ない場合でも汚物などによる排水詰まりが生じることを抑制する。【解決手段】逆流防止マス１０は、屋内排水設備と下水管とを接続する排水管路に設けられる。逆流防止マス１０は、排水マス本体１１と、排水マス本体１１の側壁に設けられた排水の流入管部１２及び流出管部１３と、排水マス本体１１内に設けられた逆流防止弁１４とを備える。逆流防止弁１４は、流入管部１２の下流側開口１２ｂを閉鎖可能に構成された弁体１４１を有する。流入管部１２の下流側管底は、流入管部１２の上流側管底よりも下方に位置する。【選択図】図２
BACKFLOW PREVENTION BASIN
To provide a backflow prevention basin that prevents intrusion of drainage flowing back through a drainage pipeline to an upstream side, while suppressing occurrence of drainage clogging due to filth even when an amount of the drainage is small.SOLUTION: A backflow prevention basin 10 is provided in the drainage pipeline connecting an indoor drainage facility and a sewer pipe. The backflow prevention basin 10 comprises: a catch basin body 11; an inflow pipe part 12 and an outflow pipe part 13 for drainage provided on a side wall of the catch basin body 11; and a backflow prevention valve 14 provided in the catch basin body 11. The backflow prevention valve 14 has a valve body 141 configured to be able to close a downstream opening 12b of the inflow pipe part 12. A downstream side pipe bottom of the inflow pipe part 12 is located below an upstream side pipe bottom of the inflow pipe part 12.SELECTED DRAWING: Figure 2
【課題】排水管路を逆流する排水の上流側への侵入を防止する逆流防止マスにおいて、排水量が少ない場合でも汚物などによる排水詰まりが生じることを抑制する。【解決手段】逆流防止マス１０は、屋内排水設備と下水管とを接続する排水管路に設けられる。逆流防止マス１０は、排水マス本体１１と、排水マス本体１１の側壁に設けられた排水の流入管部１２及び流出管部１３と、排水マス本体１１内に設けられた逆流防止弁１４とを備える。逆流防止弁１４は、流入管部１２の下流側開口１２ｂを閉鎖可能に構成された弁体１４１を有する。流入管部１２の下流側管底は、流入管部１２の上流側管底よりも下方に位置する。【選択図】図２
BACKFLOW PREVENTION BASIN
逆流防止マス
MUNENAGA MASATOSHI (author) / MAYAMA ATSUYA (author) / ICHINOSE KEIJIRO (author)
2022-01-26
Patent
Electronic Resource
Japanese
IPC:
E03F
SEWERS
,
Abwasserkanäle
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