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Valve opening and closing indicating device and valve

A technology of indicating device and valve switch, which is applied to valve devices, engine components, mechanical equipment, etc., can solve the problems that the opening indicator cannot be used in general and cannot be installed, and achieves the effect of ingenious structural design and convenient disassembly and assembly.

Active Publication Date: 2016-08-31
NEWAY OIL EQUIP SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are some problems in the installation and use of the existing opening indicators, for example: (1) At least part of the valve stem is required to be exposed outside the valve body during installation, otherwise it cannot be installed; The diameter of the installation hole of the valve stem matches the diameter of the valve stem. When the diameter of the valve stem has multiple specifications, the opening indicator cannot be used universally.

Method used

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  • Valve opening and closing indicating device and valve
  • Valve opening and closing indicating device and valve
  • Valve opening and closing indicating device and valve

Examples

Experimental program
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Effect test

Embodiment 2

[0038] like image 3 As shown, this embodiment provides a valve with a valve stem 5 and a gear box 32 for driving the valve stem 5. The valve stem 5 can only rotate around its own axis, and the top end of the valve stem 5 is provided with a valve stem adapter 30 ,

[0039] The valve includes the valve switch indicating device 40 of the first embodiment. The valve also includes a valve body 1, a valve seat 2, a gate plate 3, a stem nut 4, a valve cover 6, a sealing ring 7, a packing gland 8, a bearing 9, a bearing bracket 10, a bearing seat 11 and a pin shaft 12.

[0040] The valve switch indicating device 40 is coaxially connected with the valve stem conversion joint 30 at the top of the valve stem 5 inside the valve through the driving connecting rod 43 . When opening or closing the valve, the manual operation hand wheel drives the valve stem conversion joint 30 and the valve stem 5 to rotate through the gear box 32, the rotation of the valve stem 5 drives the driving conne...

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PUM

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Abstract

The invention provides a valve opening and closing indicating device. The valve opening and closing indicating device comprises a fixed base, a cover, a driving gear, a driving connecting rod, a transmission gear assembly, an indicating gear and an indicating component, wherein the cover covers the fixed base; the driving gear rotatably penetrates in the fixed base through a rotating shaft; the rotating shaft movably penetrates through the fixed base and extends downwards; the driving connecting rod extends in the up-down direction; a connecting part which is coaxially and fixedly connected with a valve rod or a valve rod adapter is arranged at the lower end of the driving connecting rod; the upper end of the driving connecting rod is matched with the rotating shaft to drive the driving gear to rotate; the transmission gear assembly is arranged on the fixed base and is engaged with the driving gear; the indicating gear is rotatably arranged on the cover and is engaged with the transmission gear assembly; and the indicating component is fixed on the indicating gear and rotates along with the indicating gear. The valve opening and closing indicating device is skillful in structural design and convenient to mount, is suitable for being mounted in a valve of which a valve rod is not exposed, and is high in universality. Operators can conveniently and timely observe and know the opening situation of the valve with the valve opening and closing indicating device.

Description

technical field [0001] The invention relates to a valve switch indicating device and a valve, in particular to a valve switch indicating device and a valve for a dark stem gate valve. Background technique [0002] In the hidden stem gate valve, the valve stem only rotates around its own axis, and the gate plate is driven up and down by the action of the thread of the valve stem and the valve stem nut to open and close the valve. Since the valve stem does not rise and fall with the gate plate, it is difficult to detect the opening of the valve when operating the valve. Therefore, in order to facilitate observation and operation, a valve switch indicating device needs to be installed on the dark rod gate valve. [0003] In the prior art, the switch indicating device of the dark stem gate valve is usually directly sleeved on the valve stem, and the rotation of the valve stem drives the gear assembly and the indicating part to display the valve opening. For example, the hidden...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K37/00
CPCF16K37/0008
Inventor 薄伟高开展刘章莲
Owner NEWAY OIL EQUIP SUZHOU
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