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BACKFLOW PREVENTION DEVICE FOR SEWAGE BASIN
PROBLEM TO BE SOLVED: To prevent at a low cost backflow of sewage from a sewage basin that accommodates rainwater into a source of sewage in a house.SOLUTION: An excess water drainage port 11 that opens toward the outside of a house 1 is formed on a flow channel at a location lower than a source of sewage 6 of the house 1, and made to communicate with a rainwater lead-in pipe 4 connected to a sewage basin 2 that stores and drains sewage from the house 1. The excess water drainage port 11 may be provided with a cover 16 that normally closes the excess water drainage port 11 and opens the excess water drainage port 11 automatically by water pressure from the rainwater lead-in pipe 4, before sewage inside the sewage basin 2 reaches the source of sewage 6. Furthermore, a flow amount throttle device 24 may be provided on the rainwater lead-in pipe 4 at a location closer to a clear water tank 2 than the excess water drainage port 11, the flow amount throttle device restricting amount of rainwater flowing into the sewage basin 2.SELECTED DRAWING: Figure 1
【課題】雨水が導入される汚水桝から汚水が逆流して住宅内の汚水源へと到達することを低コストで防止する。【解決手段】住宅１の汚水を貯留して排出するための汚水桝２に連通する雨水導入管４に、住宅１内の汚水源６よりも低い流路で前記住宅１の外部に開口する過剰水排出口１１を連通させる。前記過剰水排出口１１を常時は閉じ、且つ、前記汚水桝２内の汚水が前記汚水源６へ到達する前に前記雨水導入管４内の水圧によって前記過剰水排出口１１を自動的に開放する蓋１６を設けることもできる。さらに、前記雨水導入管４において、前記過剰水排出口１１よりも浄水槽２に近い位置に、前記汚水桝２への雨水の流入量を制限する流量絞り２４を設けることもできる。【選択図】 図１
BACKFLOW PREVENTION DEVICE FOR SEWAGE BASIN
PROBLEM TO BE SOLVED: To prevent at a low cost backflow of sewage from a sewage basin that accommodates rainwater into a source of sewage in a house.SOLUTION: An excess water drainage port 11 that opens toward the outside of a house 1 is formed on a flow channel at a location lower than a source of sewage 6 of the house 1, and made to communicate with a rainwater lead-in pipe 4 connected to a sewage basin 2 that stores and drains sewage from the house 1. The excess water drainage port 11 may be provided with a cover 16 that normally closes the excess water drainage port 11 and opens the excess water drainage port 11 automatically by water pressure from the rainwater lead-in pipe 4, before sewage inside the sewage basin 2 reaches the source of sewage 6. Furthermore, a flow amount throttle device 24 may be provided on the rainwater lead-in pipe 4 at a location closer to a clear water tank 2 than the excess water drainage port 11, the flow amount throttle device restricting amount of rainwater flowing into the sewage basin 2.SELECTED DRAWING: Figure 1
【課題】雨水が導入される汚水桝から汚水が逆流して住宅内の汚水源へと到達することを低コストで防止する。【解決手段】住宅１の汚水を貯留して排出するための汚水桝２に連通する雨水導入管４に、住宅１内の汚水源６よりも低い流路で前記住宅１の外部に開口する過剰水排出口１１を連通させる。前記過剰水排出口１１を常時は閉じ、且つ、前記汚水桝２内の汚水が前記汚水源６へ到達する前に前記雨水導入管４内の水圧によって前記過剰水排出口１１を自動的に開放する蓋１６を設けることもできる。さらに、前記雨水導入管４において、前記過剰水排出口１１よりも浄水槽２に近い位置に、前記汚水桝２への雨水の流入量を制限する流量絞り２４を設けることもできる。【選択図】 図１
BACKFLOW PREVENTION DEVICE FOR SEWAGE BASIN
汚水桝の逆流防止装置
TAIRA SHIGENOBU (author)
2016-05-16
Patent
Electronic Resource
Japanese
BACKFLOW PREVENTION DEVICE AND DRAINAGE BASIN EQUIPPED WITH BACKFLOW PREVENTION DEVICE
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