A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PROBLEM TO BE SOLVED: To improve sealing performance of a float.SOLUTION: A backflow preventing device 100 includes a valve seat 4 having a flow port 41 of waste water (liquid), a float 5 provided in the downstream side of the valve seat 4 in a waste water flow direction and opening and closing the flow port 41 by vertical movement in accordance with a liquid level of the waste water in the downstream side of the valve seat 4, and an energizing mechanism 6 for energizing the float 5 toward the valve seat 4 in a closed state where the float 5 closes the flow port 41.SELECTED DRAWING: Figure 2
【課題】フロートのシール性を向上させる。【解決手段】逆流防止装置１００は、排水（液体）の流通口４１を有する弁座４と、排水の流れ方向において弁座４の下流側に設けられ、弁座４の下流側における排水の液位に応じて上下動することによって流通口４１を開閉するフロート５と、フロート５が流通口４１を閉鎖した閉鎖状態のときにフロート５を弁座４の方へ付勢する付勢機構６とを備えている。【選択図】図２
PROBLEM TO BE SOLVED: To improve sealing performance of a float.SOLUTION: A backflow preventing device 100 includes a valve seat 4 having a flow port 41 of waste water (liquid), a float 5 provided in the downstream side of the valve seat 4 in a waste water flow direction and opening and closing the flow port 41 by vertical movement in accordance with a liquid level of the waste water in the downstream side of the valve seat 4, and an energizing mechanism 6 for energizing the float 5 toward the valve seat 4 in a closed state where the float 5 closes the flow port 41.SELECTED DRAWING: Figure 2
【課題】フロートのシール性を向上させる。【解決手段】逆流防止装置１００は、排水（液体）の流通口４１を有する弁座４と、排水の流れ方向において弁座４の下流側に設けられ、弁座４の下流側における排水の液位に応じて上下動することによって流通口４１を開閉するフロート５と、フロート５が流通口４１を閉鎖した閉鎖状態のときにフロート５を弁座４の方へ付勢する付勢機構６とを備えている。【選択図】図２
BACKFLOW PREVENTING DEVICE
逆流防止装置
NAKANISHI YOSHIKI (author)
2017-12-21
Patent
Electronic Resource
Japanese
IPC:
E03C
DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER
,
Hausinstallationen für Frisch- oder Abwasser