Biconical hydraulic valve

Abstract

The invention discloses a biconical hydraulic valve. A hydraulic telescopic conical head switching device of the biconical hydraulic valve is composed of a shell and a flange plate connected with a central connecting plate. A hydraulic oil cylinder is arranged in the shell. A hydraulic oil cavity is formed between the periphery of the hydraulic oil cylinder and the inner wall of the shell. The hydraulic oil cylinder is in sliding fit with a piston rod of a piston, and a plurality of seal rings are arranged between the hydraulic oil cylinder and the piston rod. A base is arranged at the tail end of the piston rod of the piston. An end cover is fixedly connected to the end surface of the tail end of the base through a screw. A sealing head is arranged between the base and the end cover. Whenthe valve is closed, the piston rod stretches out to enable the outer peripheral surface of the sealing head to make tight contact with the inner wall of a conical pipe of the shell, so that liquid is prevented from entering the hydraulic oil cavity. Since the structure is adopted, the sealing effect of the biconical hydraulic valve is better.

Description

technical field [0001] The invention relates to a valve, in particular to a double-cone hydraulic valve. Background technique [0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, adjust and control the parameters (temperature, pressure and flow) of the conveying medium. According to its function, it can be divided into shut-off valve, check valve, regulating valve and so on. The valve is a control component in the fluid delivery system, which has functions such as cut-off, adjustment, 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 a...

AI Technical Summary

Problems solved by technology

[0004] The hydraulic telescopic conical head switch device right and the hydraulic telescopic conical head switch device left in the above patent documents use the brass conical head in close contact with the inner wall of the conical shell to close the valve, and the brass conical head Both the head and the conical shell require high precision to fit well, and a rigid impact will occur during the closing process, which may easily cause damage to the brass conical head and the conical shell, resulting in leakage

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