Quarter-turn butterfly valve

The invention discloses a quarter-turn butterfly valve which comprises an operation handle, a butterfly plate and a valve body. Four protruding blocks of the valve body are each provided with a fixing bolt hole. The butterfly plate is arranged in the valve body, a rotating shaft is welded to the mid...

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Bibliographic Details
Main Authors WEI TONGJU, XIA CHUNJU, CHEN XINGXING, DONG XINPING, TANG TAO, SONG LAIFU, TANG HAIZHOU, PENG CHUANGCHUANG, GAN XIAOYAN
Format Patent
LanguageChinese
English
Published 20.06.2017
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 invention discloses a quarter-turn butterfly valve which comprises an operation handle, a butterfly plate and a valve body. Four protruding blocks of the valve body are each provided with a fixing bolt hole. The butterfly plate is arranged in the valve body, a rotating shaft is welded to the middle of the butterfly plate, the rotating shaft penetrates through the valve body, a first fixing ring and a second fixing ring with the certain distance are welded to the top of the rotating shaft, a moving ring with which the rotating shaft is sleeved is arranged between the first fixing ring and the second fixing ring, and the joint between a bent connection rod and the rotating shaft is provided with a fixing base. The butterfly plate is provided with a limiting groove, and a semi-toroidal convex block is arranged in the valve body and corresponds to the limiting groove in position. When the butterfly plate needs to be closed, the position of the semi-toroidal convex block can be moved through a connection bolt,
Bibliography:Application Number: CN201710276877