Ultra-large-diameter material switch angle valve

Abstract

The invention relates to an ultra-large-diameter material switch angle valve which comprises a valve body, wherein a stuffing box is processed on the valve body, a guide bushing is arranged in the stuffing box, a valve rod is in sliding connection with the guide bushing, and a thrust nut is arranged at the bottom end of the valve rod and connected with a valve disc. A valve base is pressed on the valve body through a valve plug assembly, the valve base and the valve disc are in conical surface matching sealing, a guide blade is fixed at the position of an excircle on the top end surface of the valve disc, and the outer lateral wall of the guide blade is matched with the lateral wall of an inner circle of the valve base. The valve plug assembly is firmly connected and cannot loosen easily. The weight of the valve plug assembly can be reduced by about 30% so that action flexibility and reliability are effectively improved. The valve rod is stable in guide, flexible to act and not apt to have blocking or deformation. The sealing performance and all action indexes of the ultra-large-diameter material switch angle valve well meet use requirements.

Description

technical field [0001] The invention relates to a super-large-diameter material switch angle valve, which belongs to the technical field of fluid control valves. Background technique [0002] The flow path of the angle valve is simple, the dead zone and eddy current zone are small, with the help of the scouring effect of the medium itself, it can effectively prevent the medium from clogging, and has good self-cleaning property. It has small flow resistance and large flow coefficient. It is suitable for occasions with high viscosity, suspended solids and granular fluids. [0003] The material angle valve is used in the industrial process control system to control the process parameters such as medium flow and pressure. It is named for its angular structure of the inlet and outlet channels. It is widely used in PTA chemical industry, food fermentation and other industries, and has a wide range of applications. [0004] With the continuous expansion of the production capacity...

AI Technical Summary

Problems solved by technology

The spool assembly is relatively bulky, which affects the flexibility and reliability of the spool assembly, which in turn leads to deformation of the valve stem

It not only affects the sealing performance but also increases the material cost

[0012] In short, the existing structure cannot meet the working conditions of super-large-diameter angle valves.

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