Novel stop valve

Abstract

The invention discloses a novel stop valve, which comprises a valve body, fixed bolts, fixing nuts, a valve cover, connecting bolts, connecting nuts, a bracket, a scale indicator board, a spring sleeve, a pressure spring, a pressing ring, a threaded valve rod, a valve rod nut, a hand wheel, a pointer, a lifting rod, a packing pressing plate, a packing gland, a sealing filler, a flow equalizing cover, a valve disc, a soft sealing ring, a valve seat, compression bolts and compression nuts, wherein the pressure spring, the packing gland and the sealing filler are arranged, so that the sealing performance of the stop valve is improved, the stop valve achieves a function of automatic closing, the medium leakage problem is avoided, the pipeline aging risk is reduced, and the pipeline safety is improved; the scale indicator board and the pointer are arranged, so that the stop valve has a pressure display function, the personnel can conveniently and precisely adjust the pressure of the mediumin the valve body, so that the personnel can conveniently and precisely adjust the flow of the medium according to the needs, the functionality of the stop valve is enhanced, and the market competitiveness of the stop valve is improved.

Description

technical field [0001] The invention relates to the technical field of stop valves, in particular to a novel stop valve. Background technique [0002] The globe valve, also known as the gate valve, is a forced sealing valve with the functions of cutting, regulating and throttling. Since the opening or closing stroke of the globe valve stem is relatively short, it has a very reliable cut-off function, and the change of the valve seat port is proportional to the stroke of the valve disc, so it is very suitable for the regulation of the flow of the medium. [0003] However, when the traditional stop valve is closed, pressure must be applied to the valve disc to force the sealing surface not to leak. However, after the valve body is damaged, the stop valve will often open automatically, which is prone to medium leakage and increases the risk of pipeline aging. The safety of the pipeline is reduced, and most of the traditional globe valves do not have a pressure display function...

AI Technical Summary

Problems solved by technology

[0003] However, when the traditional stop valve is closed, pressure must be applied to the valve disc to force the sealing surface not to leak. However, after the valve body is damaged, the stop valve will often open automatically, which is prone to medium leakage and increases the risk of pipeline aging. The safety of the pipeline is reduced, and most of the traditional globe valves do not have a pressure display function, and cannot accurately adjust the pressure of the medium in the valve body, making it difficult for personnel to accurately adjust the flow of the medium according to the use requirements. The function is single and the market competitiveness is poor.

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