A hard seal ball valve with guide rail

Abstract

The invention discloses a rigidity-seal ball valve with a guide rail. The rigidity-seal ball valve with the guide rail is characterized in that a valve clack and an inner passage ring are arranged in a fluid passage of a valve body; the valve clack takes the shape of a hemispheroid; a rotating guide groove is formed in the inner side surface of the valve clack; the depth of the guide groove is gradually reduced from the start end to the tail end; the lower end of the inner passage ring is fixedly mounted on the inner wall of the valve body; a guide jacking block is arranged on the left side surface of the lower end of the inner passage ring; the jacking block is matched with the guide groove; a mounting hole is formed in the neck part of the valve flack; the inner wall of the mounting holes adopts a convex arc structure; the lower end of a valve rod is arranged in the mounting hole; the valve rod is in transmission with the valve clack to enable the valve clack to rotate to open or close; when the guide groove moves along the guide jacking block, the valve clack is enabled to be deviated to be separated from or to be in fit with a valve base; an elastic device is arranged between the outer side of the lower end of the hemispheroid valve clack and the valve body. The rigidity-seal ball valve with the guide rail is simple in structure, and convenient to use, can effectively reduce wear between the valve clack and the valve base, can make up a gap caused by wear through rotation offset of the valve clack, and the sealing performance keeps good.

Description

technical field [0001] The invention relates to an improved invention in the field of ball valves, in particular to an improved invention of a hard-sealed ball valve with a guide rail. Background technique [0002] In the prior art, the main function of the ball valve is to cut off or connect the fluid channel in the pipeline. The working principle of the ball valve is to apply a certain torque to the ball on the upper end of the valve stem with the help of the driving device, so that it can rotate 90° to complete the action of opening or closing the valve disc. However, during the rotation of the valve clack, the valve clack and the valve seat will be worn, resulting in reduced sealing performance and affecting normal use. Therefore, frequent replacement and maintenance are required, which not only delays work, but also increases costs. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the pr...

AI Technical Summary

Problems solved by technology

However, during the rotation of the valve clack, the valve clack and the valve seat will be worn, resulting in reduced sealing performance and affecting normal use. Therefore, frequent replacement and maintenance are required, which not only delays work, but also increases costs.

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