Hard-seal bidirectional pressure butterfly valve

The utility model relates to a hard-seal bidirectional pressure butterfly valve, which comprises a valve body, a valve plate and a valve rod, wherein a valve base is arranged at the right part of the inner cavity of the valve body; a movable fitting gap is formed between the outer side face of the v...

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Bibliographische Detailangaben
1. Verfasser:	GU YUNGUI
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 hard-seal bidirectional pressure butterfly valve, which comprises a valve body, a valve plate and a valve rod, wherein a valve base is arranged at the right part of the inner cavity of the valve body; a movable fitting gap is formed between the outer side face of the valve base and the inner side face of the valve body; an inner step of the valve body which is positioned on the right side of the inner cavity of the valve body is arranged at the right side of the valve base; and a compression spring for compressing the valve base towards the right side is arranged at the left side of the valve base. The hard-seal bidirectional pressure butterfly valve has the beneficial effects that the valve base capable of moving leftwards and rightwards is arranged in the valve body, and the compression spring for compressing the valve base to the right side is arranged at the left side of the valve base, so that the specific pressure between a valve plate sealing surface and a valve base seal