Two-piece type soft sealing and jacket heat preserving wedge type ball valve

Abstract

The invention provides a two-piece type soft sealing and jacket heat preserving wedge type ball valve. The ball valve comprises a left valve body, a right valve body and an adjusting screw rod. The ball valve has the advantages of being simple in structure and good in heat preservation performance and sealing performance; through a double-bevel-type sealing pair of a first inclined surface and a second inclined surface, a center hole of the ball and the first inclined surface form an included angle of 5 degrees, and the center hole of the ball and the second inclined surface also form the included angle of 5 degrees so that the sealing performance among valve seats, the valve bodies and a ball body can be automatically adjusted; metal valve seat lining rings are arranged on the valve seat,the valve seat is made of polytetrafluoroethylene material, so that plastic deformation of the valve seat is prevented, and flushing of a medium on the valve seat is reduced; the adjusting screw rodis arranged at the bottom and is used for driving an ejector rod to move, so that abrasion of the valve seat is reduced, and the service life of the valve is prolonged; and a first heat preservation jacket is connected with a second heat preservation jacket through pipeline flanges, so that the detachability of the heat preservation jackets is realized, use is convenient, and the heat preservationperformance of the ball valve is ensured.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a two-piece soft-sealed jacket insulation wedge ball valve. Background technique [0002] The ball valve is a valve whose opening and closing part is driven by the valve stem and rotates around the axis of the ball valve. It can be used for fluid adjustment and control. It has a 90° rotation action. The opening and closing part is a sphere with a circular through hole or channel. its axis. The ball valve appeared in the 1950s. With the rapid development of science and technology, the continuous improvement of production technology and product structure, it has rapidly developed into a major valve category in recent years. In my country, ball valves are widely used in petroleum refining, long-distance pipelines, chemical industry, papermaking, pharmaceuticals, water conservancy, electric power, municipal, steel and other industries, and occupy a pivotal position in the national ec...

AI Technical Summary

Problems solved by technology

In my country, ball valves are widely used in petroleum refining, long-distance pipelines, chemical industry, papermaking, pharmaceuticals, water conservancy, electric power, municipal, steel and other industries, and occupy a pivotal position in the national economy, but the existing ball valves have the following shortcomings First, the ball of the ball valve will wear the sealing valve seat during the repeated opening and closing process, resulting in a decrease in the sealing performance of the ball valve, and the operation of replacing the new valve seat is complicated, time-consuming and labor-intensive; When the medium is used, it cannot play a good heat preservation effect. The heat preservation form of the existing ball valve is single. Most of the ball valves are wrapped with heat preservation materials such as slag wool, and then the heat preservation material is fixed on the valve shell with a strip, and finally coated with asphalt Oil, this kind of heat preservation method is not only complicated, but also can only be used once, and the maintenance performance of the valve is poor

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