Directly lifting type plug valve

A cock valve and direct-lift technology, applied in the field of cock valves, can solve the problems of running, leaking, easy wear of the valve core and valve body, etc., and achieve the effects of reducing friction, safe and reliable work, and easy operation

Inactive Publication Date: 2008-07-16
SHANGHAI FUDI VALVE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the plug valve in the prior art, during the operation of opening and closing the valve, the spool and the valve body rotate relative to each other in a sealed state to change the working state, so that the spool and the valve body are easy to wear, resulting in Run and leak phenomenon

Method used

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  • Directly lifting type plug valve

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Embodiment Construction

[0011] The present invention is described in detail below in conjunction with accompanying drawing and specific embodiment:

[0012] As shown in the figure, the straight-up plug valve of the present invention includes a valve body 4, a bonnet 7, a cock 3, a lower cover 1, and it also includes a valve stem 6, a bonnet bracket 10, a hand wheel 12, a handle 14, The valve stem nut 11 and the top wire 5 are composed. The inner cavity of the valve is provided with a space for the cock 3 to move up and down, and the cock 3 is arranged in the valve body 4; the valve cover 7 is fixedly connected above the valve body 4 by fasteners. , the bonnet 7 is provided with a bonnet bracket 10, the lower end of the valve stem 6 is provided with two horizontal straight grooves, the top wire 5 on the cock 3 acts on the straight grooves, and the valve stem nut 11 is set on the bonnet bracket In the fixing ring on 10, the internal thread of the valve stem nut 11 is engaged with the external thread on...

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PUM

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Abstract

The invention relates to a plug valve, in particular to a straight lifting typed plug valve. The invention is characterized in that the internal chamber of a valve body is provided with a space which can lead the plug valve to move up and down; the plug valve is arranged in the valve body; a valve cover is fixedly connected with the upper part of the valve body by a fastener; the valve cover is provided with a valve cover bracket; the lower end of the valve rod is provided with two horizontal straight troughs; the top thread of the plug valve is acted on the straight troughs; a valve rod nut is sheathed in a fixed ring on the valve cover bracket; the internal thread of the valve rod nut is engaged with an external thread which is arranged on the upper part of the valve rod; a handwheel is arranged above the fixed ring of the valve cover bracket, sheathed on the valve nut and provided with a fastener; the handwheel is fixedly connected with the middle part of the valve rod. The invention has the advantages that, as the straight lifting structure is adopted, the friction of the matching surface is greatly reduced, the operation is convenient, the work is safe and reliable, and the invention can be applied to high pressure sites with the pressure more than 2500LB, when the plug valve is started and closed.

Description

[technical field] [0001] The invention relates to the technical field of plug valves, in particular to a straight-up plug valve. [Background technique] [0002] In the plug valve in the prior art, during the operation of opening and closing the valve, the spool and the valve body rotate relative to each other in a sealed state to change the working state, so that the spool and the valve body are easy to wear, resulting in Run, leak phenomenon. [Content of the invention] [0003] The purpose of the present invention is to provide a straight-up plug valve to make up for the deficiencies in the prior art. [0004] The present invention is realized in the following manner: a straight-up cock valve, which includes a valve body, a bonnet, a cock, a lower cover, and it also includes a valve stem, a bonnet bracket, a handwheel, a handle, a valve Composed of a rod nut and a top wire, the inner cavity of the valve is provided with a space for the cock to move up and down, and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K5/04F16K31/44
Inventor 胡侃吕瑞龙周游吕海燕
Owner SHANGHAI FUDI VALVE CO LTD
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