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Static balance valve

A technology of static balance and valve body, which is applied in the direction of balance valve, lifting valve, valve details, etc., to achieve the effects of high precision, labor-saving operation and simple structure

Inactive Publication Date: 2013-02-27
卓旦春
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to solve the above-mentioned problems in the prior art, and provide a static balance valve that saves labor and solves the surge problem when the large-caliber valve is small in opening.

Method used

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Embodiment Construction

[0035] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0036] Such as figure 1 , figure 2 As shown, the static balance valve includes a valve body 1 , a valve core 4 , a valve stem 5 , a hand wheel 6 and a return spring 8 .

[0037] The inside of the valve body 1 is a cavity, the left side is the water inlet 2, and the right side is the water outlet 3. Both the water outlet 3 and the water inlet 2 have a through hole for installing the push-type test head 17, which is convenient for the valve body. 1 The flow and pressure data at the water outlet 3 and the water inlet 2 are detected. The upper part of the valve body 1 is connected with an upper bonnet 12 by bolts, the middle part of the cavity of the valve body 1 has a valve seat 9, the lower part of the valve body 1 is thr...

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Abstract

The invention provides a static balance valve and belongs to the technical field of valves, and the static balance valve is used for solving the problem that the handwheel of an existing static balance valve is hard to rotate, a valve core structure is complicated and the like. The static balance valve comprises a valve body the interior of which is provided with a hollow cavity, wherein the left and right sides of the valve body are respectively provided with a water inlet and a water outlet, a valve core is positioned in the valve body, and the inner end of a valve rod is connected with the valve core; the outer end of the valve rod stretches out of the valve body so as to be connected with a handwheel, the valve rod is provided with a press plate, and the valve core comprises a large valve core and a small valve core; the small valve core is fixedly connected with the inner end of the valve rod and is positioned in the large valve core, and the outer side face of the small valve core is tightly adhered to the inner side face of the large valve core; and the valve body is internally provided with a restoring spring, one end of the restoring spring props against the bottom of the valve body, and the other end of the restoring spring props against the large valve core. The static balance valve provided by the invention has the advantages that the operation is labor-saving, the problem that a large caliber valve has a small opening so as to surge is solved, and the like.

Description

technical field [0001] The invention belongs to the technical field of valves, and relates to a balance valve, in particular to a static balance valve. Background technique [0002] Static balance valve is also known as balance valve, manual balance valve, digital lock balance valve, two-position control valve, etc. It changes the flow resistance flowing through the valve by changing the gap (opening) between the valve core and the valve seat to achieve regulation. purpose of traffic. When the large-diameter valve is adjusted, when the opening between the valve core and the valve seat is small, the valve surge will be caused by the unbalanced force of the valve core, which will damage the internal parts of the valve body and destroy the sealing performance of the valve. [0003] In response to the above problems, people have made various improvements, and some have applied for patents. For example, Chinese patent literature discloses a double-spool high-pressure differentia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K17/20F16K1/38F16K47/02
Inventor 卓旦春
Owner 卓旦春
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