Spring type safety valve with high service life

Abstract

The invention relates to the field of valve devices, and discloses a spring type safety valve with a high service life. The valve comprises a valve body, a valve element, a valve rod, a sealing sleeveand a spring, wherein the valve element is arranged at the bottom of an inner cavity of the valve body, the valve rod is fixedly connected to the middle of the top end of the valve element, the sealing sleeve is arranged in the middle of the inner cavity of the valve body, a spring is arranged between the valve element and the sealing sleeve in a sleeving manner, a magnetic plate is fixedly arranged on the valve rod in a sleeving manner, a sealing plate is fixedly arranged at the top of the inner cavity of the valve body in a sleeving manner, an electromagnet is fixedly arranged at the bottomof the sealing plate, and an iron plate is fixedly connected to the bottom of the electromagnet. According to the spring type safety valve with the high service life, the magnetic plate, the iron plate, the electromagnet, an iron bar and a magnetic field box are designed, magnetic induction lines in the magnetic field box are cut by the iron bar when pressure relief is finished, so that the electromagnet is electrified to generate attraction force to the magnetic plate, moving down of the valve element is effectively buffered, the collision strength of the attached portions of the valve element and the valve body is reduced, and the service life of a safety valve is prolonged.

Description

technical field [0001] The invention relates to the field of valve equipment, in particular to a spring type safety valve with long service life. Background technique [0002] The spring type safety valve is automatically opened and closed according to the working pressure of the pressure system. It is generally installed on the equipment or pipeline in the closed Xiting to protect the safety of the system. When the pressure in the equipment or pipeline exceeds the pressure set by the safety valve, it will automatically open and release the pressure. Ensure that the medium pressure in equipment and pipelines is below the set pressure, and protect the normal operation of equipment and pipelines. [0003] The existing spring safety valve principle is as follows (refer to image 3 ): When the inlet pressure at the bottom of the valve body (1) is greater than the spring force value of the spring (5), under the action of the inlet pressure at the bottom of the valve body (1), the...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a spring-type safety valve with high service life, which has the advantages of protecting the valve core and spring during the pressure relief process, and solves the technical problems mentioned in the background technology

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