Non-resistance self-draining backflow prevention flood drainage device

The invention discloses a non-resistance self-draining backflow prevention flood drainage device. The non-resistance self-draining backflow prevention flood drainage device mainly comprises a drainingwell, a water inlet pipe and a gravity drain pipe, and the water inlet pipe and the gravity drain pi...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	ZHAO YULING, LIU LEJIA, LIU FUGUANG, LIU JINGTAO, LUO JIN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CESSPOOLS FIXED CONSTRUCTIONS SEWERAGE SEWERS WATER SUPPLY
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