Safety valve

Abstract

The invention discloses a safety valve, and belongs to the technical field of safety valves. The safety valve comprises a valve body, a valve core and a spring; the valve body comprises a valve seat and a valve casing; the valve seat is connected with the valve casing; a through hole communicating with the inner wall of the valve casing is formed in the side wall of the valve casing; a passage communicating with the interior of the valve casing is arranged in the valve seat; a counter bore is formed in the top part of the passage; the valve core is in tight contact with the bottom face of thecounter bore under the action of the spring; and a gap is arranged between the side wall of the counter bore and the side wall of the valve core. As the area of the gap is constant, the discharge pressure of the safety valve can be controlled within a specified range, and the stability of needed reseating pressure is guaranteed; moreover, a fluted disc is cancelled by the safety valve having sucha structure, so that the history that the safety valve needs to be adjust the reseating pressure necessarily by means of the fluted disc is broken, the structure is greatly simplified, and the production efficiency is greatly increased.

Description

technical field [0001] The invention relates to a safety valve, in particular to a safety valve used for safety protection of pressure steam containers. Background technique [0002] Pressure steam is a colorless, tasteless, odorless, non-toxic gas. As long as saturated water vapor or electric heating steam is injected into the sealed container, vaporized pressure steam can be generated, and the temperature of the steam will rise as the pressure increases. , it has good penetrability, and can quickly moisten and heat the items placed in the container. "Gentle heat" kills microorganisms quickly, and finally achieves the effect of sterilization. The sterilized items do not leave any pollution, nor will they cause any allergies and irritations to human tissues. It is suitable for the sterilization of most items, and has the advantages of reliable effect, simple procedure and low cost. With the steady growth of our country's national economy and the continuous improvement of ...

AI Technical Summary

Problems solved by technology

General safety valves only pay attention to the opening pressure, and the closing pressure is not high, which consumes a lot of energy, so it is necessary to change

[0005] At present, the safety valves that rely on the upper and lower cranksets to adjust the opening and reseating pressure are used on the market. The structure of these safety valves is relatively complicated and the production efficiency is low, so it is necessary to improve

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