Balance valve

The utility model discloses a balance valve, comprising a main valve body, a main valve sleeve, a main valve core, a control valve body, a control valve core, a spring device, a pilot piston and a pilot spring, wherein the first end of the control valve body props against the main valve sleeve and i...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	ZUO CHUNGENG, XIE HAIBO, ZHANG JIN, ZOU XUSHAO, TAO JUN
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 discloses a balance valve, comprising a main valve body, a main valve sleeve, a main valve core, a control valve body, a control valve core, a spring device, a pilot piston and a pilot spring, wherein the first end of the control valve body props against the main valve sleeve and is internally provided with a control cavity, a pilot cavity and a second throttle hole; the control cavity and the pilot cavity are mutually communicated through the second throttle hole; a pilot port and an oil drain port are formed at the second end of the control valve body; the control cavity is communicated with a second oil cavity through a first throttle hole; the control valve core is used for opening and closing the second throttle hole; the main valve core is pressed and leaned on the main valve sleeve by the spring device to close a first opening, and the control valve core is pressed and leaned on the control valve body by the spring device to close the second throttle hole; two ends of the pilot spring