Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
RETURN GAS PREVENTION DEVICE FOR DRAINAGE PIPE
The present disclosure provides a return gas prevention device for a drainage pipe, belonging to the technical field of drainage pipes. The device realizes two functions of water seal and a check valve simultaneously, as well as prevents gas channeling in a drainage process.
RETURN GAS PREVENTION DEVICE FOR DRAINAGE PIPE
The present disclosure provides a return gas prevention device for a drainage pipe, belonging to the technical field of drainage pipes. The device realizes two functions of water seal and a check valve simultaneously, as well as prevents gas channeling in a drainage process.
RETURN GAS PREVENTION DEVICE FOR DRAINAGE PIPE
ZHANG YULIAN (Autor:in) / ZHANG CHEN (Autor:in) / ZHANG HAI (Autor:in) / WANG QIN (Autor:in)
21.01.2021
Patent
Elektronische Ressource
Englisch
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