Surface contact hard seal butterfly valve

The utility model relates to a surface contact and hard sealing butterfly valve used for communicating and disconnecting medium, which comprises a valve body, a valve axle, a butterfly plate and a sealing ring. The butterfly plate is connected on the valve body through the valve axle; the sealing ri...

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Bibliographische Detailangaben
Hauptverfasser:	SU SHA, ZHOU YISHUANG, TANG WENSHENG, ZHOU DA, WANG HONGYUN, PANG YUNHUA
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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Beschreibung
Zusammenfassung:	The utility model relates to a surface contact and hard sealing butterfly valve used for communicating and disconnecting medium, which comprises a valve body, a valve axle, a butterfly plate and a sealing ring. The butterfly plate is connected on the valve body through the valve axle; the sealing ring between the valve body and the butterfly plate is wedge shaped, and the sealing ring is alternately made of metal and asbestos. As the valve body and the butterfly plate of the utility model are sealing surfaces of surface contact, the utility model has the advantages of long stroke of medium, large sealing specific pressure, intact periphery of the interference surface without notch, compensation of the micro-friction after the operation of the valve and reliable sealing.