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Butterfly valve with handle locking mechanism

A locking mechanism and handle technology, applied in the direction of valve lift, valve details, valve device, etc., can solve the problems of changing the opening and closing state of the valve, the rotation of the valve shaft, and the butterfly valve without a locking device, so as to prevent misoperation

Inactive Publication Date: 2020-06-26
HUBEI TAIHE PETROCHEM EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing butterfly valve does not have a locking device. During use, the valve shaft is often rotated due to misoperation or touching the handle, thus changing the opening and closing state of the valve.

Method used

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  • Butterfly valve with handle locking mechanism
  • Butterfly valve with handle locking mechanism

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] Such as Figure 1~2 As shown, a butterfly valve with a handle locking mechanism includes a valve body 1, a valve shaft 2 and a butterfly plate 3. The valve body 1 is provided with a wear-resistant layer 4, and the material of the wear-resistant layer 4 is nitrile rubber or fluororubber. The valve body 1 is provided with a valve body hole for the valve shaft 2 to pass through. The part of the valve shaft 2 located in the channel of the valve body 1 is connected to the butterfly plate 3. The upper end of the valve shaft 2 is provided with a control handle 5 and a limit handle 6 It is arranged on the lower side of the control handle 5, one end of the limit handle 6 is connected with the control handle 5 through pin rotation, a spring 7 is arranged between the limit handle 6 and the control handle 5, and a support plate 8 is provided at the upper end of the valve body 1, and the support plate The outer side of 8 is provided with a limit bayonet 9 for limiting the limit hand...

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PUM

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Abstract

The invention provides a butterfly valve with a handle locking mechanism. The butterfly valve comprises a valve body, a valve shaft and a butterfly plate. A wear-resisting layer is mounted in the valve body, a valve body hole allowing the valve shaft to penetrate through is formed in the valve body, the part, located in a valve body channel, of the valve shaft is connected with the butterfly plate, the upper end of the valve shaft is provided with a control handle, a limiting handle is mounted on the lower side of the control handle, one end of the limiting handle is rotatably connected with the control handle through a pin, a spring is mounted between the limiting handle and the control handle, a supporting plate is mounted on the upper end of the valve body, and a limiting clamping opening for limiting the limiting handle is formed in the outer side of the supporting plate. According to the butterfly valve, the handle can be limited and locked, and the phenomenon that due to rotationof the valve shaft, the opening and closing state of the valve is affected can be prevented.

Description

technical field [0001] The invention belongs to the technical field of valves, in particular to a butterfly valve with a handle locking mechanism. Background technique [0002] Butterfly valve, also known as flap valve, is a regulating valve with simple structure, which can be used for switch control of low-pressure pipeline medium. Butterfly valve means that the closing part (disc or butterfly plate) is a disc, which rotates around the valve shaft to achieve opening and closing. of a valve. [0003] Valves can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. It mainly plays the role of cutting and throttling on the pipeline. The opening and closing part of the butterfly valve is a disc-shaped butterfly plate that rotates around its own axis in the valve body to achieve the purpose of opening and closing or adjustment. [0004] The existing butterfly valve has no lockin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/22F16K31/60F16K35/00
CPCF16K1/22F16K31/60F16K35/00
Inventor 章文忠
Owner HUBEI TAIHE PETROCHEM EQUIP