Ball valve protection device capable of preventing incomplete opening and closing

Abstract

The invention relates to a ball valve protection device capable of preventing incomplete opening and closing. The ball valve protection device comprises a valve body and a valve core, wherein a push plate is movably inserted into a transverse plate, a tension spring is installed between a first movable plate and a second movable plate, the right side of a movable shaft is fixedly connected with ashifting plate, the left side of the movable shaft is fixedly provided with a gear, the top of the transverse plate is fixedly connected with a fixing base, a lifting toothed plate meshed with the gear is movably inserted into the top of the fixing base, and the outer side of a valve rod is fixedly connected with a first contact plate and a second contact plate corresponding to the push plate. After a handle is rotated, the valve rod rotates and moves up and down, the lifting toothed plate drives the gear to rotate through a rack segment, the gear drives the first movable plate through the movable shaft, the shifting plate and a blocking rod, and under the action of the tension spring, the second movable plate is driven to turn to impact a pushing groove, the push plate impacts the contactplates, and the valve rod is rotated in place, so that the phenomenon that the valve rod is in an incomplete opening state is avoided, and the service life and the working reliability are improved.

Description

technical field [0001] The invention relates to the technical field of ball valve equipment, in particular to a ball valve protection device for preventing incomplete opening and closing. Background technique [0002] The valve is a device used to control the direction, pressure and flow of the fluid in the fluid system. Among them, the ball valve is commonly used. The structure of the ball valve mainly includes the valve body, the valve core and the valve stem. The valve core is in the shape of a ball. When the through groove of the valve core is aligned with the pipelines at both ends of the valve body, the valve is open and the fluid can pass through the valve; when the through groove of the valve core is staggered with the pipelines at both ends of the valve body, the valve In the closed state, fluid cannot pass through. [0003] The ball valve is generally only used for the cut-off position of fully open or fully closed, and the switching control is performed by rotati...

AI Technical Summary

Problems solved by technology

[0003] The ball valve is generally only used for the cut-off position of fully open or fully closed, and the switching control is performed by rotating the valve stem. However, after a long period of use, the valve stem is worn, or the valve core is impacted by the fluid, resulting in the valve stem and the valve core not being in the same position. In the fully open or fully closed position, when the valve is in a half-open state, the impact force of the fluid will cause the valve stem screw and the valve stem nut wire to be misaligned, loosened, and seized, resulting in failure of fluid regulation and reduced service life of the valve

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