Axial-flow type control valve

Abstract

The invention provides an axial-flow type control valve, wherein the axial direction of an outer valve body is hollow and has a first tail end and a second tail end, a first end part of an inner valve body is a sealed end part, a second end part has an opening, the inner valve body is located in the outer valve body and is connected with the outer valve body, the first end part is close to the first tail end, the second end part props against the second tail end, a plurality of through holes are formed in the side face of the second end part; the first tail end passes through a clearance between the inner valve body and the outer valve body, the through holes and an opened pipeline to communicate with the second tail end; a valve rod is arranged in the inner valve body in an axially movable manner; a power transfer mechanism penetrates through the outer valve body and the inner valve body and is connected with one end of the valve rod to be used for driving the valve rod to axially move; and a valve element is arranged at the other end of the valve rod and is arranged in the second end part in an axially movable manner. Preferably, the axial-flow type control valve further comprises a guide sleeve and a retainer. The axial-flow type control valve disclosed by the invention is high in adjusting precision, low in noise, less in turbulence, strong in circulating capability, smart in design, simple in structure, convenient to use, and applicable to large-scale popularization and application.

Description

technical field [0001] The invention relates to the field of valves, in particular to the technical field of regulating valves, in particular to an axial flow control valve. Background technique [0002] At present, the domestic valves used to regulate flow, pressure, temperature, etc. are all "S" type flow channel chambers, which are often called regulating valves. However, due to the internal structure and other problems of this type of valve, the inner cavity of the valve is very easy to wash, and the medium directly impacts the valve internals, which is easy to form turbulent flow and cause vibration. At the same time, the valve is also noisy and the adjustment accuracy is poor. [0003] In order to meet the requirements of high-precision regulation such as the anti-surge valve at the back end of the compressor, or the pressure regulating valve used in the gas pressurization station, it is necessary to provide a regulating valve with high regulating precision, low noise,...

AI Technical Summary

Problems solved by technology

However, due to the internal structure and other problems of this type of valve, the inner cavity of the valve is very easy to be scoured, and the medium directly impacts the internal parts of the valve, which is easy to form turbulent flow and cause vibration. At the same time, the noise of the valve is also large, and the adjustment accuracy is poor.

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