Ultra-short ball valve with stable structure
A stable and ultra-short technology, applied to the valve housing structure, valve details, valve device, etc., can solve the problems of medium leakage, damage to the sealing structure of the valve body and end cover, etc., and achieve the effect of stable connection structure
Inactive Publication Date: 2015-03-18
龚伶
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Problems solved by technology
However, after the existing ultra-short ball valve is installed on the pipeline, due to the pre-tightening force of the valve installation and the thermal expansion and contraction of the pipeline, the end cover will produce a certain amount of displacement in the direction of the ball, which will easily cause the valve body and the end cover. The sealing structure between them is damaged, so that the medium flowing through the ultra-short ball valve leaks due to the displacement of the end cover
Method used
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[0013] Such as figure 1 As shown, an ultra-short ball valve with a stable structure includes a valve body 1, an end cover 2, a valve stem 3, a ball 4 and a driving mechanism 5, wherein the valve body 1 is provided with an annular positioning bump, and the end cover 2 An annular groove matching the size of the positioning bump of the valve body 1 is provided, and the valve body 1 is connected with the end cover through its positioning bump embedded in the groove of the end cover 2, in order to ensure the distance between the valve body 1 and the end cover 2 Sealing performance, there is a gasket 8 between the valve body 1 and the end cover 2, the gasket 8 is specifically located between the positioning protrusion of the valve body 1 and the groove of the end cover 2, and the gasket 8 is made of polytetrafluoroethylene . The valve body 1 forms a sphere cavity and a medium outlet connected to the sphere cavity, the end cover 2 forms a medium inlet connected to the sphere cavity,...
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The invention discloses an ultra-short ball valve with a stable structure. The ultra-short ball valve comprises a valve body, an end cover, a valve rod, a ball and a drive mechanism connected to the valve rod. The valve body is provided with a ball cavity and a medium outlet communicated with the ball cavity, the ball is arranged in the ball cavity, and the other end of the valve rod corresponding to the drive mechanism end penetrates the valve body and is connected to the ball. The valve body is provided with an annular positioning boss, the end cover is provided with an annular groove matching with the positioning boss of the valve body in size, the valve body is connected to the end cover by embedding the positioning boss into the groove of the end cover, and the end cover is provided with a medium inlet communicated with the ball cavity. Thus, the ultra-short ball valve is simple in structure and easy to implement, the end cover is prevented from shifting by embedding the positioning boss of the valve body into the groove of the end cover, and the medium flowing through the ultra-short ball valve is prevented from leaking due to end cover shifting accordingly.
Description
technical field [0001] The invention relates to a ball valve, in particular to an ultra-short ball valve with a stable structure. Background technique [0002] Because the ultra-short ball valve has the advantages of small size, light weight, convenient installation and maintenance, etc., it is often used in pharmaceutical and chemical equipment. However, after the existing ultra-short ball valve is installed on the pipeline, due to the pre-tightening force of the valve installation and the thermal expansion and contraction of the pipeline, the end cover will produce a certain amount of displacement in the direction of the ball, which will easily cause the valve body and the end cover to be separated. The sealing structure between them is damaged, so that the medium flowing through the ultra-short ball valve leaks due to the displacement of the end cover. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the pri...
Claims
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IPC IPC(8): F16K5/06
CPCF16K5/06F16K27/067
Inventor 龚伶
Owner 龚伶