Tank bottom valve

The utility model discloses a tank bottom valve which comprises a valve seat, a valve rod arranged in the valve seat, a valve element moving along with the valve rod and an executing mechanism driving the valve rod to move, and an upper isolation sleeve and a lower isolation sleeve which are arrange...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	XIE ZHAOLIANG, CHEN XINGHUA, XIE SHIDA
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 tank bottom valve which comprises a valve seat, a valve rod arranged in the valve seat, a valve element moving along with the valve rod and an executing mechanism driving the valve rod to move, and an upper isolation sleeve and a lower isolation sleeve which are arranged on the valve rod in a sleeved mode are arranged in the valve seat. The end, opposite to the lower isolation sleeve, of the upper isolation sleeve is connected with the valve rod in a sealed mode and acts along with the valve rod, the end, opposite to the upper isolation sleeve, of the lower isolation sleeve is connected with the valve seat in a sealed mode, and the upper isolation sleeve and the lower isolation sleeve are arranged in a staggered mode so that the upper isolation sleeve can be located on the outer ring of the lower isolation sleeve. The upper isolation sleeve and the lower isolation sleeve extend oppositely to form an overlapping section, the length of the overlapping section is larger than the max