Conical valve without middle cavity gap

Abstract

The invention discloses a conical valve without a middle cavity gap. The conical valve comprises a cone, a conical valve element arranged in the cone and a valve rod installed on the cone and connected with the conical valve element, the middle cavity gap is formed between the cone and the conical valve element, a communicating flow channel is formed in the conical valve element, and a main flow channel is formed on the cone. The middle cavity gap is filled with a sealing piece. The conical valve has the following advantages and effects that no connection gap exists between a valve body and the valve element, and therefore the corrosion resistance of the valve is further improved, the service life of the valve is prolonged, the structure is convenient to machine, the application range is wide, zero leakage is realized, no dead corner exists in a cavity, no liquid is accumulated, and no residual medium exists.

Description

technical field [0001] The invention relates to a valve, in particular to a taper valve without a cavity gap. Background technique [0002] A valve is a device used to control the direction, pressure, and flow of a fluid in a fluid system. It has functions such as cut-off, regulation, flow diversion, reverse flow prevention, pressure stabilization, flow diversion, or overflow pressure relief. Valves used in fluid control systems range from the simplest cut-off valves to various valves used in extremely complex automatic control systems, with a wide variety of varieties and specifications. Valves can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. [0003] In the existing valve, there is a large middle cavity gap between the valve body and the valve core, which causes the pipeline medium to enter the middle cavity gap under the action of the pressure difference, thereby c...

AI Technical Summary

Problems solved by technology

[0003] In the existing valve, there is a large middle cavity gap between the valve body and the valve core, which causes the pipeline medium to enter the middle cavity gap under the action of the pressure difference, thereby corroding the inner wall of the valve, so that the existing valve does not have good corrosion resistance

And the medium that enters the middle cavity gap will be permanently accumulated in the middle cavity gap, resulting in liquid accumulation and medium residue, which will further affect the service life of the valve

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