Valve opening degree indicator

Abstract

A valve opening degree indicator comprises a thrust bearing, a driving belt wheel, driven belt wheels, an indicator panel, sliding rails, a fixed mount, a lifting connecting rod, a pointer and a connecting buckle, wherein the thrust bearing and the driving belt wheel are installed on a valve rod, and the sliding rails are arranged on the two sides of the fixed mount; the indicator panel penetrates through the sliding rails and is connected to the thrust bearing on the valve rod through the lifting connecting rod, and the indicator panel can slide up and down synchronously along with the rising and falling of the valve rod; the driven belt wheels are installed at the two ends of the upper side of the indicator panel and are connected with the driving belt wheel installed on the valve rod through a belt; the pointer is fixedly connected to the belt, the connecting buckle is fixedly connected with the fixed mount, and the fixed mount is fixed to the top end of a valve body through the connecting buckle to form the valve opening degree indicator. According to the valve opening degree indicator, the valve rod rotates to drive the pointer to rotate synchronously, the opening degree of a valve is displayed accurately, fully-mechanical transmission is achieved in the whole process, and the valve opening degree indicator is suitable for being used under the condition without any power supply and is simple in overall structure, stable in performance and convenient to debug.

Description

technical field [0001] The present invention relates to the technical field of valves, in particular to an indicator for installing or refitting valves used in the fields of chemical industry, food, pharmacy, and life to make the opening degree readable. [0002] An indicator showing the valve opening. Background technique [0003] Various valves are often used in chemical companies: traditional valves such as butterfly valves, ball valves, globe valves, gate valves, process valves, and safety valves, as well as solenoid valves, pneumatic valves, electric valves, and other valves with a high degree of automation. Most of the traditional valves, especially the traditional valves that control the flow, often turn the valve according to personal experience to control the fluid flow during the switching action. More or less flow errors are caused during the process, especially in the chemical or fine chemical industry. This kind of valve that needs to control the opening is...

AI Technical Summary

Problems solved by technology

[0003] Various valves are often used in chemical companies: traditional valves such as butterfly valves, ball valves, globe valves, gate valves, process valves, and safety valves, as well as solenoid valves, pneumatic valves, electric valves, and other valves with a high degree of automation. Most of the traditional valves, especially the traditional valves that control the flow, often turn the valve according to personal experience to control the fluid flow during the switching action. More or less flow errors are caused during the process, especially in the chemical or fine chemical industry. This kind of valve that needs to control the opening is particularly important. The inaccurate valve opening directly affects the quality of chemical products, and serious cases can cause Quality accidents or production accidents. Although the DCS system in modern process control is very advanced and can accurately control process parameters, there is more or less a time difference between the control center and the operation site. This response time will affect the fluctuation of the entire process. , and the most common valves that everyone is familiar with, such as valves that control steam pipelines or heating pipelines, are generally shut down manually, and there is no valve opening indicating device. Currently, there are devices indicating valves on the market. For valves on special occasions, there will be various electronic instrument indicators, but the structure is complicated, the price is expensive, and the calibration is relatively complicated, so it is not popular, and in the process equipment, more than 90% of the valves are without opening indication

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