Four-valve-clack type friction-free ball valve

The invention provides a four-valve-clack type friction-free ball valve. A spherical valve core assembly comprises a wedge-shaped valve core, a pair of off-position wedge-shaped side faces are each provided with an off-position valve clack, the middle positions on the pair of off-position wedge-shap...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	XU CHANGHUA, LIN WUBIN, YANG ZHENNING, TIAN ZHONGSHAN, LIN YUANMAO, ZHONG LONG, WANG BO, FENG YULONG
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 four-valve-clack type friction-free ball valve. A spherical valve core assembly comprises a wedge-shaped valve core, a pair of off-position wedge-shaped side faces are each provided with an off-position valve clack, the middle positions on the pair of off-position wedge-shaped side faces are each provided with an off-position guide key in the axial direction, and each off-position valve clack is provided with an off-position guide groove in the axial direction; and a pair of on-position wedge-shaped side faces are each provided with an on-position valve clack, the middle positions of the pair of on-position wedge-shaped side faces are each provided with an on-position guide key in the axial direction, and each on-position valve clack is provided with an on-positionguide groove in the axial direction. The four-valve-clack type friction-free ball valve can achieve friction-free opening and closing, the wedge-shaped valve core cooperates with a four-valve-clack type structure so that the