A method for injecting movable parts of a ball valve shaft and a ball valve

Abstract

A method for injection molding a movable kit of a ball valve shaft, comprising the following steps: S1, selecting 30% carbon fiber reinforced PPS as the injection molding raw material for the movable kit, and selecting 30% glass fiber reinforced PPS as the injection molding raw material for the shaft; S2, adjusting the injection molding equipment The parameters are: the melt temperature is 320-330 degrees, the inner temperature of the mold is 135-140 degrees, the holding time is 5-8 seconds, the injection molding activity kit; S3, let the activity kit completely cool and shape; S4, adjust the injection molding equipment The parameters are that the melt temperature is 320-330 degrees, the inner temperature of the mold is 135-140 degrees, and the holding time is 2-3 seconds. Fill the injection molding shaft in the movable kit; S5, eject the injection molded part, after cooling completely , the contraction of the shaft and the movable sleeve create a gap, and the movable sleeve can rotate freely around the shaft. The shaft part and the movable sleeve are molded by injection molding, and the movable sleeve and the shaft part can be rotatably rotatable, and the movable sleeve is limited to the shaft part and cannot be disassembled.

Description

technical field [0001] The invention belongs to the technical field of ball valve accessories processing, and relates to a method for injecting a movable set of a ball valve shaft. Background technique [0002] A ball valve is a valve whose opening and closing parts (such as a ball) are driven by the valve stem and rotate around the ball valve axis. It is mainly used for fluid adjustment and control. The ball valve came out in the 1950s. With the rapid development of science and technology , The continuous improvement of production technology and product structure has rapidly developed into a major valve category in just 40 years, and the use of ball valves is increasing year by year. [0003] Ball valves are also widely used in the automotive industry, such as steering valves for automotive air conditioning systems, steering valves for automotive thermal cycle systems, and steering valves for automotive turbine air supply. Ball valves are often used to control air fluids. T...

AI Technical Summary

Problems solved by technology

[0003] Ball valves are also widely used in the automotive industry, such as steering valves for automotive air conditioning systems, steering valves for automotive thermal cycle systems, and steering valves for automotive turbine air supply. Ball valves are often used to control air fluids. Traditional ball valves are mostly made of metal materials. Metal ball valves are heavy, easy to corrode, and costly

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