Double-seal butterfly valve

The utility model belongs to the technical field of butterfly valves, and particularly relates to a double-seal butterfly valve which comprises a valve body. A valve rod is rotationally connected into the valve body. A valve plate is fixedly connected to the position, corresponding to the opening of...

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Bibliographic Details
Main Authors ZHANG WEIYAN, ZHAO QINGHUI
Format Patent
LanguageChinese
English
Published 22.03.2022
Subjects
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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Summary:The utility model belongs to the technical field of butterfly valves, and particularly relates to a double-seal butterfly valve which comprises a valve body. A valve rod is rotationally connected into the valve body. A valve plate is fixedly connected to the position, corresponding to the opening of the valve body, of the valve rod. An adjusting bolt is mounted at the top of the valve body; a body stuffing box is arranged at the top of the valve body; a sealing stuffing box is arranged at the top of the body stuffing box; through the structural design that the body stuffing box is filled with the flexible graphite ring, the sealing stuffing box is filled with the V-shaped sealing ring, and the O-shaped sealing ring is arranged between the body stuffing box and the sealing stuffing box, the multi-layer sealing function of the butterfly valve is achieved, and the problems that in the modern blast furnace smelting process, the valve action is sensitive, the sealing performance is good, and the service life is lo
Bibliography:Application Number: CN202121771666U