Fireproof smoke exhaust valve capable of being opened and closed safely

The utility model relates to the technical field of smoke exhaust valves, in particular to a fireproof smoke exhaust valve capable of being opened and closed safely. According to the technical scheme, the device comprises a device body, a protection box and a rotating disc, an air inlet plate is ins...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	FANG HUALONG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ACTUATING-FLOATS BLASTING COCKS DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING TAPS THERMAL INSULATION IN GENERAL VALVES WEAPONS
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