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Device for indicating angle of opening of concealed stem valve

A technology for indicating devices and valves, applied in valve devices, engine components, mechanical equipment, etc., can solve the problems of complex structure and process, unclear opening reading, affecting transparency, etc., and achieve the effect of simple structure and manufacturing process

Inactive Publication Date: 2005-11-02
ZHEJIANG SHANGYI VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The interlocking gear in this patent should be driven by a gear device that rotates with the handle, and the gear device is composed of a fixed gear that rotates with the handle and planetary gear devices located on the upper and lower sides of the handle; and on a pair of interlocking gears The scale and pointer should be set separately, so the interlocking gear on the upper side should be transparent; this kind of transparent gear is easy to be stained by dirt and affect the transparency during the use of the working site, and even the opening reading cannot be seen clearly , so it is generally necessary to set a transparent dustproof cover
Its structure and process are very complex

Method used

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  • Device for indicating angle of opening of concealed stem valve
  • Device for indicating angle of opening of concealed stem valve
  • Device for indicating angle of opening of concealed stem valve

Examples

Experimental program
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Embodiment Construction

[0008] Such as figure 1 As shown, the opening indicating device of the dark stem valve is suitable for various gate valves, globe valves and other valves whose valve stem rotates more than one revolution during the opening and closing process. The structure includes driving gear 6 , indicating plate 10 , pointer 11 , driven gears 7 , 8 and gear box 4 . The driving gear 6 is fixed on the valve stem 1 by a flat key, and the two driven gears 7 and 8 are coaxially installed and meshed with the driving gear 6 at the same time. One of the gears 7 is fixedly connected with the gear shaft 5, and the other gear 8 is connected with the gear shaft. 5 are movably connected, the top of the gear 8 is fixedly mounted with an indicator plate 10, and the top of the gear shaft 5 is fixedly mounted with a pointer 11. The number of teeth of the two driven gears 7 and 8 is different, so every time the valve stem 1 rotates once, a displacement angle corresponding to the difference in the number of...

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Abstract

This invention relates to an opening indicating device with blind rod valve gate composed of drive gear, driven gear, pointer, indicator dial and gear box in which the drive gear is fixed on the valve rod characterizing that the driven gear is made up of two in-line gears with different gears clutched with the drive gear, one of which is fixed at the gear axis, the other one connects to the gear axis in running, th e indicator, dial and pointer rotate along two driven wheels and deflection angle generated between the indicating dial and the pointer expresses the valve gate corresponding opening valve.

Description

technical field [0001] The invention relates to a valve indicating device, in particular to an opening degree indicating device of a concealed rod valve. Background technique [0002] There are many types of valves, which can be divided into bright stem valves and dark stem valves according to the movement state of the valve stem during the valve switch process. The so-called rising stem valve means that the valve stem moves up and down during the opening and closing process of the valve, and the opening degree of the valve can be directly seen from the rising height of the valve stem. The so-called hidden stem valve means that the valve stem does not move up and down during the opening and closing process of the valve, so an indicating device needs to be set on the valve to reflect its opening degree. The opening indicating devices of various types of concealed stem valves are mainly composed of a gear reduction mechanism, that is, the driving gear fix...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K37/00
Inventor 施冬青陈光辉周启年
Owner ZHEJIANG SHANGYI VALVE
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