Pressure relief safety valve

Abstract

The invention relates to the technical field of valves, and particularly relates to a pressure relief safety valve. The pressure relief safety valve comprises guide rods, gravity preformings, a straight cylinder and a limiting component; a through hole is formed in the straight cylinder, and used for the circulation of medium; the number of the gravity preformings is at least one, and each gravitypreforming is provided with guide holes; each guide rod is inserted in the corresponding guide hole of each gravity performing, each guide hole is in clearance fit with the corresponding guide rod, which is used for each gravity performing to move along the guide rods through the guide holes; a first end of each guide rod is connected with the limiting component, the limiting component is used for forming a limiting position of the gravity preformings at the first end of each guide rod, and a second end of each guide rod is connected with the straight cylinder; the gravity preforming, near the second end of each guide rod is cooperatively in contact with a first end face of the straight cylinder to form a switch of medium circulation. The pressure relief of the pressure relief safety valve is adjustable and can not fail to release pressure due to clamping.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a pressure relief safety valve. Background technique [0002] The safety valve is a special valve whose opening and closing parts are normally closed by external force. When the medium pressure in the equipment or pipeline exceeds the specified value, it discharges the medium to the outside of the system to prevent the medium pressure in the pipeline or equipment from exceeding the specified value. Safety valves are automatic valves, mainly used in boilers, pressure vessels and pipelines, which can control the pressure not to exceed the specified value, thus playing an important role in protecting personal safety and equipment operation. [0003] A safety valve in the prior art uses a weight installed in the hollow cylinder to press the discharge hole. When the medium pressure rises to a specified value, the high-pressure medium acts on the weight from the discharge hole, and the ...

AI Technical Summary

Problems solved by technology

[0004] The disadvantages of the above-mentioned safety valves are: 1. When the weight is raised or lowered in the hollow cylinder, it is easy to cause the weight to be stuck inside the hollow cylinder due to the unbalanced force of the weight on the hammer, causing the problem of pressure relief failure; 2. The gravity of the safety valve is a certain value, the medium pressure is greater than the gravity of the hammer, the valve opens, the medium pressure is less than the gravity of the hammer, and the valve closes, so the opening pressure of this safety valve is related to the gravity of the hammer, which is a certain value and cannot be adjusted

Images