Spherical aluminum valve core, spherical valve and manufacturing technology of spherical aluminum valve core

Abstract

The invention provides a spherical aluminum valve core, a spherical valve and a manufacturing technology of the spherical aluminum valve core. The spherical aluminum valve core comprises an aluminum valve core body, the valve core body is spherical and is provided with a flow channel communicated with a pipeline and a connecting structure used for connecting a valve rod, and an aluminum oxide membrane layer is arranged at the outer circumference of the valve core body. The spherical aluminum valve core on the surface of aluminum oxide has the advantages of being high in rigidity, smooth, resistant to wear and resistant to rust, during installation, a lubricant does not need to be added, the problem that the service life of a spherical core in the spherical valve is shortened since the lubricant loses efficacy is avoided, and the defects in the prior art that the spherical core of the spherical valve is low in rigidity and poor in wear resistance, and lubrication is relied on the lubricant are overcome.

Description

technical field [0001] The invention relates to the field of ball valve design, in particular to a spherical aluminum valve core. The invention also provides various types of ball valves and a manufacturing process for the spherical aluminum valve core. Background technique [0002] The ball valve is a commonly used valve. The ball core is driven by the valve stem and rotates around the axis of the ball valve. It can also be used for fluid regulation and control. The ball valve is mainly used to cut off, distribute and change the flow direction of the medium in the pipeline. It only needs to rotate 90 degrees and a small rotational torque to close tightly. [0003] The ball cores used in traditional ball valves are mostly copper-plated decorative chromium, which has the following defects: low hardness, poor wear resistance, and the surface of the ball core and the sealing ring are lubricated by lubricating oil. Will fail, turn the ball core when switching the ball valve aft...

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the disadvantages of the prior art that the core hardness of the ball valve is low, the wear resistance is poor, and relies on lubricant lubrication, thereby providing a ball valve with high hardness and good wear resistance, And the ball core on the surface of the low-temperature hard aluminum oxide film can be used normally without lubricant, thus avoiding the problem of shortening the service life of the ball core in the ball valve due to the failure of the lubricating oil

Images