Valve rod connecting piece with internal protection mechanism

Abstract

The invention relates to the technical field of sealing devices, in particular to a valve rod connecting piece with an internal protection mechanism, which comprises a circular bottom assembly disc and a longitudinal assembly pipe, and a circular bottom storage groove is formed in the lower end of the circular bottom assembly disc. According to the valve rod connecting piece with the internal protection mechanism, a bottom limiting frame on the upper surface of a round bottom assembling disc is inserted into a lower end assembling inserting groove to be fixedly connected with a bolt at the lower end of a longitudinal assembling pipe, and an inner side assembling groove internally provided with a detachable bottom rubber sealing piece is formed in the lower end of the round bottom assembling disc; earlier-stage assembly and later-stage replacement and maintenance are facilitated, and the later-stage use cost is greatly reduced; an elastic adjusting device used for controlling the bottom rubber sealing piece to stretch and contract is installed in the longitudinal assembling pipe, so that a crumple area with an elastic buffering function can be formed on the sealing face according to needs, and the water hammer effect in a pipeline and the valve can be eliminated when the valve is opened and closed. Therefore, 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 connector with an internal protection mechanism. Background technique [0002] The valve is a pipeline accessory used to open and close the pipeline, control the flow direction, adjust and control the parameters of the conveying medium. According to its function, it can be divided into shut-off valve, check valve, regulating valve, etc. The valve is a control component in the fluid conveying system, which has the functions of cut-off, regulation, diversion, prevention of backflow, voltage stabilization, diversion or overflow and pressure relief. Valves used in fluid control systems, from the simplest shut-off valve to various valves used in extremely complex automatic control systems, have a wide variety and specifications. [0003] Valves can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil...

AI Technical Summary

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 connector with an internal protection mechanism is provided to solve the problem that the traditional valve stem upper seat structure is simple and fixed and cannot be adjusted, resulting in the use of valves The structure and specifications of the valve 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 of use

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