Reinforced type protective cover for pressure regulating valve

Abstract

The invention provides a reinforced type protective cover for a pressure regulating valve. The reinforced type protective cover comprises a cover body and a skirt edge, wherein the skirt edge is matched and connected with the upper valve deck of the pressure regulating valve and the outer outline of a valve seat bonding part; at least one vertical convex rib or groove is formed in the inner wall of the skirt edge; an upper valve deck and a gap are arranged in the cavity of the cover body; at least one inward lug boss and / or at least one reinforced rib are / is arranged on the inner wall of the upper top part of the cover body and near corresponding upper valve deck blowhole(s); at least one convex button is arranged at the lower part of the inner wall of the skirt edge. With adoption of the reinforced type protective cover disclosed by the invention, the situation that the blowholes in the upper valve deck of the pressure regulating valve are communicated with the atmosphere in any bad weather and environment is ensured, so that the service life of the pressure regulating valve is prolonged and the working reliability of the pressure regulating valve is improved.

Description

technical field [0001] The invention relates to the technical field of pressure regulating valve protection, in particular to a reinforced protective cover for a pressure regulating valve. Background technique [0002] The pressure regulating valve widely used in fluid pipelines is mainly composed of an adjusting wheel shaft 1, an adjusting spring 3, a diaphragm 5, a valve core 13, a lever 8, a nozzle 9, an inlet fluid pipe 10, an outlet fluid pipe 6, an upper valve cover 4 and a valve seat 11, see figure 1 shown. A diaphragm 5 is installed between the upper bonnet 4 and the valve seat 11, and the pressure regulating valve is divided into upper and lower chambers 12 and 7. The short arm end of the lever 8 is provided with a valve core 13, and the long arm end is provided with Tray 14, the tray 14 is placed on the surface of the membrane 5 and fixed with the center of the membrane 5. The upper chamber 12 is provided with an adjustment wheel shaft 1 and an adjustment spring...

AI Technical Summary

Problems solved by technology

[0004] It can be seen that the breathing hole 2 of the upper valve cover 4 is in a smooth state, which is crucial to the pressure regulating and stabilizing effect of the pressure regulating valve. , when the breathing hole 2 is blocked by dust, sundries, rainwater mixture or snow covers the breathing hole 2 in winter, the air in the upper chamber 12 cannot enter and exit normally, and the pressure regulating function of the pressure regulating valve will fail. accident happened

If rainwater or dust directly enters the upper chamber 12 through the breathing hole 2, it will gather on the diaphragm 5 and the tray 14, causing the diaphragm 5 to bear extra gravity, seriously affecting the pressure stabilization accuracy of the pressure regulating valve, and accident happened

If rainwater (including acid rain) and dust enter the upper chamber 12, it will corrode the parts of the upper chamber 12 and the upper valve cover 4, causing the pressure regulator to lose its pressure regulating function until it is damaged

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