Protective device for regulating valve core

Abstract

The invention discloses a protective device for a regulating valve core. The protective device for the regulating valve core comprises a regulating valve body and a protective device body, wherein a regulating valve inlet is welded on the surface of the left side of the regulating valve body, and a regulating valve outlet is welded on the side, far away from the regulating valve inlet, of the regulating valve body; a lower valve cover is arranged on the side, far away from the protective device body, of the regulating valve body, and an upper valve cover is arranged on the side, far away fromthe regulating valve body, of the lower valve cover; a valve rod is arranged at the upper portion of the upper valve cover; and a left supporting leg is welded to the left part of the side, far away from the regulating valve body, of the protective device body, and a right supporting leg is welded to the right part of the side, far away from the regulating valve body, of the protective device body. According to the protective device for the regulating valve core, the parts such as a left stretchable rod, a right stretchable rod, the protective device body and a piston supporting rod inside theprotective device body are arranged, and therefore when the valve rod is broken, influences on the normal operation of a regulating valve due to falling of the valve element can be avoided, and the use of an operator is facilitated.

Description

technical field [0001] The invention belongs to the technical field of regulating valve protection equipment, and in particular relates to a safety device for regulating a valve core. Background technique [0002] Control valve, also known as control valve, in the field of industrial automation process control, is the final control element that changes the process parameters such as medium flow, pressure, temperature, liquid level, etc. by means of power operation by receiving the control signal output by the adjustment control unit. It is generally composed of actuators and valves. According to the characteristics of the stroke, the regulating valve can be divided into straight stroke and angular stroke; according to the power used by the actuator, it can be divided into three types: pneumatic regulating valve, electric regulating valve and hydraulic regulating valve; according to its function and characteristics There are three types: linear characteristic, equal percenta...

AI Technical Summary

Problems solved by technology

[0003] At present, there are some problems in the security devices used to adjust the valve core on the market. When the valve stem breaks, the valve core will fall, causing the regulating valve to fail to work, which is not conducive to the use of the operator. In view of the above problems, we urgently need a Adjust the safety device of the spool to solve the problem that the spool falls and the control valve cannot continue to work when the valve stem breaks, which is convenient for the operator to use

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