Double-valve-seat duplex ball valve

The invention provides a double-valve-seat duplex ball valve which comprises a valve body, a left valve cavity and a right valve cavity are formed in the valve body, a left ball body is arranged in the left valve cavity, and a right ball body is arranged in the right valve cavity. A first supporting...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HOU ZONGZONG, ZHANG XINQI, LI GENFEI, SHI WENXIANG, GUAN HAIFENG, LOU YANPENG
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 invention provides a double-valve-seat duplex ball valve which comprises a valve body, a left valve cavity and a right valve cavity are formed in the valve body, a left ball body is arranged in the left valve cavity, and a right ball body is arranged in the right valve cavity. A first supporting plate is arranged on the front side of the left sphere, a second supporting plate is arranged on the rear side of the left sphere, a third supporting plate is arranged on the upper side of the right sphere, and a fourth supporting plate is arranged on the lower side; a left valve seat is arranged on the right side of the left ball body and is in contact fit with the left ball body to form a sealing piece, and a right valve seat is arranged on the left side of the right ball body and is in contact fit with the right ball body to form a sealing piece. The valve body is provided with a first control valve and a second control valve, the first control valve is used for controlling the left ball to rotate in the left v