SELF-SEALING BUTTERFLY VALVE

A self-sealing center-line butterfly valve includes a valve body (1), wherein a fluid passage (2) is provided in the valve body (1), a valve plate (4) of which an outer surface is covered with an elastic sealing layer (3) is provided within the fluid passage (2), an upper portion of the valve plate...

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Bibliographische Detailangaben
Hauptverfasser:	LI, Yuanshui, CHEN, Xinguo, ZHANG, Tonghu, CHEN, Bo
Format:	Patent
Sprache:	eng ; fre ; ger
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 self-sealing center-line butterfly valve includes a valve body (1), wherein a fluid passage (2) is provided in the valve body (1), a valve plate (4) of which an outer surface is covered with an elastic sealing layer (3) is provided within the fluid passage (2), an upper portion of the valve plate (4) is dynamically connected with a driving shaft (5) which is rotatably connected to the valve body (1), a lower portion of the valve plate (4) is rotatably connected with a supporting shaft (6) which is connected to the valve body (1), the elastic sealing layer (3) at outer edges of two end faces of the valve plate (4) axially protrudes outwardly, forming two ring lips (7) attached to an inner wall of the fluid passage, and the ring lips (7) are gradually thicker from outside to inside, so that inner ring faces of the ring lips (7) are inclined faces. The center-line butterfly valve of this structure has a great sealing effect, is flexible for opening and closing, and has a long service life.