Full-bore high-performance fluorine-lined ball valve

Abstract

The invention discloses a full-bore high-performance fluorine-lined ball valve. The full-bore high-performance fluorine-lined ball valve comprises a valve body and a side shell abutting against an opening of the valve body, and a valve element is arranged in an inner cavity of the valve body in a sleeved mode. Fluorine-lined layers abut against the side walls of the side shell, the valve body andthe valve element in an attached mode, dovetail joints are fixedly connected to the inner sides of the fluorine-lined layers, and notches in the side walls of the side shell, the valve body and the valve element are connected with the dovetail joints in a clamped mode. Two sleeves are slidably connected into the valve element, a main shaft is fixedly connected to the bottom end of a rotary disc, and a transmission gear is fixedly connected to the bottom end of the main shaft. According to the full-bore high-performance fluorine-lined ball valve, a dovetail joint inserting anti-falling structure is adopted, so that the fluorine-lined layers are connected with all the positions of the side shell, the valve body and the valve element in an attached manner, the possibility of loosening and falling of the fluorine-lined layers after the fluorine-lined layers are connected is reduced. A sleeve abutting and pressing structure during sliding is adopted, so that the two sleeves and two sleeve grooves are clamped and limited, and the possibility that the fluorine-lined layers are separated after long-time use is reduced.

Description

technical field [0001] The invention belongs to the technical field of ball valve equipment, in particular to a full-diameter high-performance fluorine-lined ball valve. Background technique [0002] Fluorine-lined ball valves and rubber-lined ball valves, as a component used to realize on-off and flow control of pipeline systems, have been widely used in many fields such as petroleum, chemical industry, metallurgy, and hydropower. Among the known ball valve technologies , the sealing form mostly adopts the sealing structure, and the sealing material is rubber, polytetrafluoroethylene, etc., due to the limitation of structural characteristics, it is not suitable for industries such as high temperature resistance, high pressure, corrosion resistance, and wear resistance. [0003] Fluorine-lined ball valves are widely used in modern times. However, the existing fluorine-lined ball valves often have the following shortcomings when they are used. When the fluorine layer is bond...

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Problems solved by technology

[0002] Fluorine-lined ball valves and rubber-lined ball valves, as a component used to realize on-off and flow control of pipeline systems, have been widely used in many fields such as petroleum, chemical industry, metallurgy, and hydropower. Among the known ball valve technologies , the sealing form mostly adopts the sealing structure, and the sealing material is rubber, polytetrafluoroethylene, etc., due to the limitation of structural characteristics, it is not suitable for high temperature resistance, high pressure, corrosion resistance, wear resistance and other industries

[0003] Fluorine-lined ball valves are widely used in modern times. However, the existing fluorine-lined ball valves often have the following shortcomings when they are used. When the fluorine layer is bonded to the inner wall of the ball valve or the assembly structure is difficult to ensure a stable blue connection at each position, it is easy to cause the fluorine-lined layer to loosen and fall off under the long-term normal open state

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