Sealing structure for valve rod in pressure reducing valve

The utility model discloses a sealing structure for a valve rod in a pressure reducing valve, the pressure reducing valve comprises a valve body, a pressure reducing cavity is arranged in the valve body, a pressure reducing device is arranged in the pressure reducing cavity, the pressure reducing de...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	GUO WENJUN, TANG ZAIYU, DU JIANXUN, GE XIAOCHENG, JIANG SANQING, HUANG YUEJUN
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
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	The utility model discloses a sealing structure for a valve rod in a pressure reducing valve, the pressure reducing valve comprises a valve body, a pressure reducing cavity is arranged in the valve body, a pressure reducing device is arranged in the pressure reducing cavity, the pressure reducing device comprises a valve rod and a membrane, the membrane is arranged at the bottom of the pressure reducing cavity, and the valve rod is arranged in the pressure reducing cavity. The valve rod is sequentially sleeved with a sealing assembly, a spring supporting cover, a reset spring and a valve seat from top to bottom, a valve element is arranged between the valve seat and the valve seat section, a first sealing face is formed between the valve rod and the valve element, and a second sealing face is formed between the valve rod and the valve seat. Non-metal and metal dual sealing is formed through the first sealing face and the second sealing face, after the first sealing face loses efficacy, the valve rod moves dow