Anti-crystallization anti-scaling abrasion-resisting ball valve

Abstract

Provided is an anti-crystallization anti-scaling abrasion-resisting ball valve. A left valve body and a right valve body form a casing. The left valve body, a spring, a spring seat, a valve seat, a ball body, a valve seat, a spring seat, a spring, a right valve body are connected in sequence. A packing gland, a handle, a valve rod, the ball body and a fixing shaft are connected. A valve is a structure divided from the middle, the division surface of the left valve body and the right valve body is located on a central line of the valve rod, the ball body and the fixing shaft. The geometric shape and size of an inner cavity is symmetrical with the division surface as the symmetrical surface. A square tenon at the end of the valve rod is inserted into a chase mortise at the top of the ball body, one end of the fixing shaft is inserted into a blind hole at the lower portion of the ball body, and the other end of the fixing shaft is fixed in a positioning hole formed by the left valve body and the right valve body. The inner cavity arranged between the two valve seats of the left valve body and the right valve body is a spherical surface, and a small gap is reserved between the inner cavity and the ball body outer surface. Due to the small gap structure, the ball body surface is effectively prevent from crystallizing, and hardening treatment is performed to the ball body surface and the valve seat surfaces. Therefore, the ball body is abrasion-resisting, and the valve seats are not galled, thereby achieving ball body abrasion-resisting effect.

Description

technical field [0001] The invention relates to a wear-resistant ball valve which does not form crystals or fouling on the surface of a sphere. Background technique [0002] The valve with the sphere as the closing part is called a ball valve. Because of its simple and convenient operation, it is widely used in pharmaceutical, chemical, petroleum, metallurgy, electric power, energy and other industrial production pipelines. By controlling the rotation of the sphere, the opening and closing of the valve is realized. . According to actual needs and production cost considerations, the gap between the inner cavity of the conventional ball valve and the outer surface of the ball is relatively sufficient, and the medium will enter the inner cavity of the valve body. In some industries, such as the relevant processes of the pharmaceutical industry, the ball valve is opened and closed quite frequently. Every time it is opened and closed, the temperature of the medium decreases, and...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problems of existing ball valves that easily cause crystallization and fouling on the surface of the ball, the present invention provides a valve that prevents crystallization and fouling on the surface of the ball, keeps the surface of the ball smooth, does not increase the rotational resistance of the ball, and always ensures the valve The good seal between the seat and the ball achieves the effect of the ball's wear resistance and effectively maintains the good operation of the pipeline

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