Small-flow temperature-reducing water regulating valve

Abstract

The invention relates to a small-flow temperature-reducing water regulating valve. The small-flow temperature-reducing water regulating valve mainly comprises a valve body, a valve deck, a valve element, a valve seat, a valve rod and a regulating rod, wherein the valve deck is matched with the valve body, the valve seat is arranged in the valve body, the valve rod extends into an inner cavity of the valve body from top to bottom, the lower end of the valve rod is connected with the valve element, the valve element is matched with the valve seat, a regulating rod is arranged at the lower end of the valve element, after the regulating rod extends to the lower end of the valve seat, certain intervals of different sizes are reserved between the regulating rod and the valve seat, the bottom end of the regulating rod and the valve element are fixed together, the regulating rod is located at the inner side of a sealing ring of the valve element, and the regulating rod is composed of an upper end fixing portion and a lower end regulating portion. The small-flow temperature-reducing water regulating valve has the advantages that when an executer is utilized to regulate small flow of the regulating valve, the regulating rod located at the bottom end of the valve element will accurately regulate the flow of the medium in the valve body firstly, the executer is not operated frequently, the operation requirements of actual working situations are met, and meanwhile the executer is not damaged.

Description

technical field [0001] The invention relates to a small flow regulating valve, specifically a device which uses an actuator to drive the valve stem to move up and down, changes the flow area of ​​the medium, and regulates and controls the flow to meet different flow requirements. Background technique [0002] Control valve, also known as control valve, in the field of industrial automation process control, by receiving the control signal output by the adjustment control unit, with the help of power operation to change the flow area of ​​the medium, to achieve the final control device for flow, pressure, liquid level and other process parameters. It is generally composed of actuators and valves. According to the stroke characteristics, the control valve can be divided into straight stroke and angular stroke; according to the power used by the actuator it is equipped with, it can be divided into three types according to its function and characteristics: linear characteristic, ...

AI Technical Summary

Problems solved by technology

[0003] At present, when regulating the small flow rate of the desuperheating water regulating valve in the existing market, the pressure difference between the inlet and the outlet is large and the pressure is unstable, so the actuator cannot be adjusted accurately. control, which will cause the actuator to move frequently, which not only cannot meet the operating requirements of the actual working conditions, but will also cause damage to the actuator

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