Valve rod upper seat with built-in multidirectional buffering mechanism

Abstract

The invention relates to the technical field of sealing devices, in particular to a valve rod upper seat with a built-in multidirectional buffering mechanism. The valve rod upper seat comprises a bottom assembling disc and a top assembling pipe, and a circular bottom adjusting groove is formed in the lower surface of the bottom assembling disc. According to the valve rod upper seat with the built-in multidirectional buffering mechanism, an inner assembling frame on the upper surface of the bottom assembling disc is inserted into a bottom assembling inserting groove to be fixedly connected with the lower end of the top assembling pipe through a bolt, and an annular assembling groove with a built-in detachable flexible rubber sealing piece is formed in the lower end of the bottom assembling disc, so that earlier-stage assembling and later-stage replacement and maintenance are facilitated, and the later use cost is greatly reduced; an elastic extrusion adjusting device used for controlling the flexible rubber sealing piece to stretch and contract is mounted in the top assembling pipe, so that a crumple area with an elastic buffering function can be formed on the sealing surface according to needs, the water hammer effect in a pipeline and a valve can be eliminated when the valve is opened and closed, and the safety of the whole valve pipeline is greatly improved.

Description

technical field [0001] The invention relates to the technical field of sealing devices, in particular to a valve stem upper seat with a built-in multi-directional buffer mechanism. 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. [0003] Valves can be used to control the flow of various types o...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is: in order to solve the problems existing in the above-mentioned background technology, an improved valve stem upper seat with a built-in multi-directional buffer mechanism is provided to solve the problem that the traditional valve stem upper seat has a simple and fixed structure and cannot be adjusted, which leads to the use of valves The structure and specifications are limited, the compressive strength is fixed, and the stability is poor. It cannot cope with the water hammer effect of the valve when it is opened and closed. The problem of high cost

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