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1. (WO2017157134) FLAT-BOTTOMED BALL VALVE

Pub. No.:    WO/2017/157134    International Application No.:    PCT/CN2017/074129
Publication Date: Fri Sep 22 01:59:59 CEST 2017 International Filing Date: Tue Feb 21 00:59:59 CET 2017
IPC: F16K 1/18
F16K 1/20
F16K 1/22
Applicants: ANHUI REDSTAR VALVE CO., LTD
安徽红星阀门有限公司
Inventors: HAN, Anwei
韩安伟
SONG, Bin
宋斌
ZHANG, Bin
张斌
Title: FLAT-BOTTOMED BALL VALVE
Abstract:
A flat-bottomed ball valve, comprising a valve body (110), a valve core (120), a valve rod (130), a valve cover (140) and a flow channel (150). The valve core (120) is installed inside the valve body (110); the valve rod (130) is installed on two opposite sides of the valve body (110) and is perpendicular to a fluid flow direction and can drive the valve core (120) to turn over; the valve cover (140) is movably installed on the valve body (110) and is parallel to the valve rod (130); and the flow channel (150) is disposed inside the valve body (110) and penetrates through two ends of the valve body (110). The valve core (120) comprises a main body portion (121), a connection portion (123) formed by symmetrically extending from two sides of the main body portion (121), an auxiliary portion (124) disposed on the main body portion (121), and a first installation hole (1231) which is disposed on the connection portion (123) and cooperates with the valve rod (130). The valve core (120) swings around the valve rod (130) and above the valve rod (130) all the time; and in a flow direction of the flow channel (150), the horizontal centre line of the main body portion (121) and the horizontal centre line of the first installation hole (1231) are arranged in parallel. The valve core of the valve uses an eccentric structure, and when the valve is opened, a sealing ring quickly disengages from the valve body, thereby avoiding wear of a sealing pair.