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A platform for research: civil engineering, architecture and urbanism
CHECK VALVE DEVICE
To enable a check valve device installed in a weep wheel of an underground structure to maintain normal operation for a long period of time.SOLUTION: A check valve device 7 installed in a weep wheel 6a of an underground structure 1 having a canal 5, comprises: a main check valve 8 and an auxiliary check valve 9. The main check valve 8 includes: a main valve seat 12x formed in a valve body 10 and directed toward the canal 5 side; and a main valve element 20 which comes in contact with and separated from the main valve seat 12x and the main check valve 8 allows the flow toward the canal 5 side and checks the flow in an opposite direction. The auxiliary check valve 9 is disposed on the more opening side of the weep wheel 6a than the operation region of the main valve element 20 and allows the flow toward the canal 5 side and checks the flow in an opposite direction. Intrusion of foreign matter such as sand from the canal 5 to the operation region of the main valve element 20 can be restricted with the auxiliary check valve 9. The auxiliary check valve 9 includes: an auxiliary valve seat 14x which is disposed in the opening end part of the valve body 10 (the opening end part of the weep wheel 6a) and is directed toward the canal 5 side; and an auxiliary valve element 30 which comes in contact with and is separated from the auxiliary valve seat 14x.SELECTED DRAWING: Figure 1
【課題】 地中構造体のウイープホイール内に設置される逆止弁装置の動作を長期にわたって正常に維持することができるようにする。【解決手段】水路５を有する地中構造体１のウイープホール６ａ内に設置される逆止弁装置７は、主逆止弁８と副逆止弁９を備えている。主逆止弁８は、弁ボデイ１０に形成され水路５側を向く主弁座１２ｘと、この主弁座１２ｘに接離する主弁体２０とを有しており、水路５に向かう流れを許容し逆方向の流れを禁じる。副逆止弁９は、主弁体２０の動作領域よりウイープホール６ａの開口側に配置され、水路５に向かう流れを許容し、逆方向の流れを禁じる。この副逆止弁９により、水路５から主弁体２０の動作領域への砂等の異物侵入を規制することができる。副逆止弁９は、弁ボデイ１０の開口端部（ウイープホイール６ａの開口端部）に配置され、水路５を向く副弁座１４ｘと、この副弁座１４ｘに接離する副弁体３０とを有している。【選択図】図１
CHECK VALVE DEVICE
To enable a check valve device installed in a weep wheel of an underground structure to maintain normal operation for a long period of time.SOLUTION: A check valve device 7 installed in a weep wheel 6a of an underground structure 1 having a canal 5, comprises: a main check valve 8 and an auxiliary check valve 9. The main check valve 8 includes: a main valve seat 12x formed in a valve body 10 and directed toward the canal 5 side; and a main valve element 20 which comes in contact with and separated from the main valve seat 12x and the main check valve 8 allows the flow toward the canal 5 side and checks the flow in an opposite direction. The auxiliary check valve 9 is disposed on the more opening side of the weep wheel 6a than the operation region of the main valve element 20 and allows the flow toward the canal 5 side and checks the flow in an opposite direction. Intrusion of foreign matter such as sand from the canal 5 to the operation region of the main valve element 20 can be restricted with the auxiliary check valve 9. The auxiliary check valve 9 includes: an auxiliary valve seat 14x which is disposed in the opening end part of the valve body 10 (the opening end part of the weep wheel 6a) and is directed toward the canal 5 side; and an auxiliary valve element 30 which comes in contact with and is separated from the auxiliary valve seat 14x.SELECTED DRAWING: Figure 1
【課題】 地中構造体のウイープホイール内に設置される逆止弁装置の動作を長期にわたって正常に維持することができるようにする。【解決手段】水路５を有する地中構造体１のウイープホール６ａ内に設置される逆止弁装置７は、主逆止弁８と副逆止弁９を備えている。主逆止弁８は、弁ボデイ１０に形成され水路５側を向く主弁座１２ｘと、この主弁座１２ｘに接離する主弁体２０とを有しており、水路５に向かう流れを許容し逆方向の流れを禁じる。副逆止弁９は、主弁体２０の動作領域よりウイープホール６ａの開口側に配置され、水路５に向かう流れを許容し、逆方向の流れを禁じる。この副逆止弁９により、水路５から主弁体２０の動作領域への砂等の異物侵入を規制することができる。副逆止弁９は、弁ボデイ１０の開口端部（ウイープホイール６ａの開口端部）に配置され、水路５を向く副弁座１４ｘと、この副弁座１４ｘに接離する副弁体３０とを有している。【選択図】図１
CHECK VALVE DEVICE
逆止弁装置
SUGIYAMA YOSHIRO (author) / ASANO RYOJI (author) / SUGAWARA HIROSHI (author)
2019-01-24
Patent
Electronic Resource
Japanese