BUTTERFLY VALVE SEAT RING AND BUTTERFLY VALVE PROVIDED WITH SAME

A seat ring (15) for a butterfly valve (11) is installed on the inner circumferential surface of an internal flow channel that extends along a flow channel axis line inside the main valve body (13) ofthe butterfly valve (11) and contacts the outer circumferential surface of a valve body (17) that is...

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Bibliographische Detailangaben
Hauptverfasser:	YAMASHITA SEIJI, YAMAMOTO YUKIHISA
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:	A seat ring (15) for a butterfly valve (11) is installed on the inner circumferential surface of an internal flow channel that extends along a flow channel axis line inside the main valve body (13) ofthe butterfly valve (11) and contacts the outer circumferential surface of a valve body (17) that is pivotally supported so as to rotate freely in the internal flow channel by a valve shaft (19) thatis supported by the main valve body (13). The seat ring (15) is provided with a main ring body (15a) with a cylindrical shape extending in the direction of the central axis. At opposing positions ofthe main ring body (15a) in the radial direction, a pair of through holes (15c, 15c) for passing through the valve shaft (19) is formed. On the outer circumferential surface of the main ring body (15a), arcuate protrusions (23, 23) extending in the circumferential direction are formed at a distance from the pair of through holes (15c, 15c). 蝶形阀(11)用座环(15)装设在蝶形阀(11)的阀本体(13)内沿着流路轴线而延伸的内部流路的内周面，且抵接有透过支承在阀本体(13)的阀轴(19)而在内部流路内自在