Four-eccentricity all-metal both-way sealing butterfly valve

The utility model relates to a four-eccentricity all-metal both-way sealing butterfly valve which comprises a valve body, a valve rod and a butterfly plate. A valve seat sealing face is manufactured in a channel of the valve body, the valve seat sealing face and a butterfly plate sealing face are pr...

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Bibliographische Detailangaben
Hauptverfasser:	LAN HAIWEI, GU CHENGMING, HE LEQUAN, ZHANG JIANSHEN, JI LUBIN
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 four-eccentricity all-metal both-way sealing butterfly valve which comprises a valve body, a valve rod and a butterfly plate. A valve seat sealing face is manufactured in a channel of the valve body, the valve seat sealing face and a butterfly plate sealing face are provided with taper sealing faces matched with each other, shaft sleeves are arranged between the two ends of the valve rod and the valve body respectively, a middle section of the valve rod is fixedly connected with a lug installation hole in the back face of the butterfly plate, the valve body, the valve rod and the butterfly plate are of a three-eccentricity structure, the four-eccentricity all-metal both-way sealing butterfly valve is mainly characterized in that an eccentric distance is reserved between a rotating center of the valve rod and a circle center of the lug installation hole, and the eccentric distance is located on an extending line of a connecting line of a middle point of the largest taper angle po