DRAINAGE SYSTEM

• Main Authors: MORIYAMA FUKUSHI, ONUMA HIROMI, OMICHI YASUYUKI, MIYAMICHI TOMOTSUGU
• Format: Patent
• Language: English; Japanese
• Published: 25.05.2017
• Subjects: CESSPOOLS; DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; FIXED CONSTRUCTIONS; SEWERAGE; SEWERS; SINKS; WATER SUPPLY

PROBLEM TO BE SOLVED: To provide a drainage system capable of temporarily storing drainage at times of emergency such as torrential rainfall and a disaster without requiring a special operation, and draining the stored drainage to a main sewer pipe when the emergency time is finished, without using a pump or other equipment.SOLUTION: A drainage system 1A includes: a drainage pipe 6 provided between a drainage instrument 2 and a main sewer pipe for connecting the drainage instrument 2 with the main sewer pipe; a check valve 8 provided on the drainage pipe 6; and a storage part 10 provided on an upstream-side drainage pipe 6A located between the drainage instrument 2 and the check valve 8. A bottom part on an inner side of the storage part 10 is located higher than a bottom edge of an inner peripheral surface of a downstream-side drainage pipe 6B located between the check valve 8 and the main sewer pipe. An edge part on the downstream side of the storage part 10 is located at a same height position with an edge part on an upstream side of the storage part 10 or lower than the edge part on the upstream side of the storage part 10. A top surface on an inner side of the storage part 10 is located lower than a sealing water surface 22 of a trap 20 of the drainage instrument 2.SELECTED DRAWING: Figure 2 【課題】排水システムにおいて、集中豪雨や災害発生等の非常時に特別な操作を必要とせず一時的に排水を貯留することができ、且つ非常時終了後にポンプ等の装置を使用することなく非常時に貯留した排水を下水本管に排出可能とする。【解決手段】排水器具２と下水本管との間に設けられ、排水器具２と前記下水本管とを接続する排水管６と、排水管６に設けられた逆流防止弁８と、排水器具２と逆流防止弁８との間に位置する上流側排水管６Ａに設けられた貯留部１０と、を備え、貯留部１０の内側の底部は逆流防止弁８と前記下水本管との間に位置する下流側排水管６Ｂの内周面の底端よりも高い位置に配置され、貯留部１０の下流側の端部は、貯留部１０の上流側の端部と同じ高さの位置、又は、貯留部１０の上流側端部より低い位置に配置され、貯留部１０の内側の上面は排水器具２のトラップ２０の封水面２２より低い位置に配置されている排水システム１Ａを提供する。【選択図】図２