Special ball valve for oxygen

Abstract

The invention discloses a special ball valve for oxygen. The special ball valve comprises a valve body. A connecting seat is arranged on both sides of the valve body respectively, a valve stem housingis connected to the top of the valve body, and an actuator is connected to the top of the valve stem housing. The valve body comprises a valve chamber and a valve seat, the valve chamber is surrounded by the valve seat, the bottom of the valve chamber is provided with a support seat disposed inside the valve seat, the top of the valve chamber is communicated with a valve stem connecting seat, andtop fixed seats are arranged on two sides of the valve stem connecting seat. The valve is provided with the connecting seats and the valve chamber, and the surfaces of the valve body and the valve seat are subjected to special hardening treatment, so that the wear resistance and the anti-high pressure oxygen purging capability can be greatly improved. The edge of a ball passage hole inside the valve body is passivated to ensure that a hardened surface layer does not fall off. A ball body is positioned by two sides, the front side and the rear side by means of a positioning ring and an insertion plate inserted into the valve chamber, the friction between the ball body and the valve chamber is reduced during the working process, and the service life of the ball valve is prolonged.

Description

technical field [0001] The invention relates to the field of valves, in particular to an oxygen special ball valve. Background technique [0002] Oxygen ball valve is a kind of special valve for oxygen pipeline network. In addition to the function of ordinary ball valve, it also has the characteristics of good flame retardancy, good electrical conductivity, fast heat transfer, compact structure, oil-proof, safe and reliable, etc. With the development of metallurgical industry Development Oxygen ball valves are widely used in iron and steel, metallurgy, medicine, chemical industry and other industries together with oxygen-specific globe valves. However, during the working process of oxygen ball valves, the internal ball will inevitably rub against the valve cavity. After long-term friction, it will cause The epidermis of the inner wall of the valve cavity is peeled off, and the space for the ball to move becomes larger, resulting in very serious consequences. Therefore, it is...

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Problems solved by technology

[0002] Oxygen ball valve is a kind of special valve for oxygen pipeline network. In addition to the function of ordinary ball valve, it also has the characteristics of good flame retardancy, good electrical conductivity, fast heat transfer, compact structure, oil-proof, safe and reliable, etc. With the development of metallurgical industry Development Oxygen ball valves are widely used in iron and steel, metallurgy, medicine, chemical industry and other industries together with oxygen-specific globe valves. However, during the working process of oxygen ball valves, the internal ball will inevitably rub against the valve cavity. After long-term friction, it will cause The surface of the inner wall of the valve cavity falls off, and the space for the ball to move becomes larger, resulting in very serious consequences. Therefore, it is necessary to invent a special ball valve for oxygen to solve the above problems.

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