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Adjustable swing check valve

A swing-type, adjustable technology, applied in the direction of control valve, valve device, functional valve type, etc., can solve the problem that the valve flap cannot be closed and the check function cannot be realized, and achieves the effect of simple structure and preventing the loosening of the rotating shaft.

Active Publication Date: 2019-10-22
ZHONGCHI VALVE IND GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the swing check valve can be installed on non-horizontal pipelines, but the flow direction of the medium can only be bottom-up during installation, otherwise the valve disc will not be closed due to gravity, and the check function cannot be realized.

Method used

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Examples

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Embodiment Construction

[0034] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0035] This embodiment discloses an adjustable swing check valve, such as figure 1 , figure 2 As shown, it includes a valve body 1 , a valve cover 2 , a rotating shaft 3 , and a valve disc 31 . The two ends of the valve body 1 are respectively provided with a medium inlet 4 and a medium outlet 5 .

[0036] Such as figure 2 , image 3 As shown, the adjustable swing check valve is installed in a non-horizontal pipeline, and when the medium flows from top to bottom, the valve disc 31 is set at the medium inlet 4, and the medium passes through the medium inlet 4 and passes through the valve disc 31 and from The medium outlet 5 flows out; the surface of the valve body 1 is provided with a circular operating hole 11 for the rotating shaft 3 to enter the valve body 1 , and the rotating shaft 3 and the operating hole 11 are in clearance fit. The rotating shaft ...

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Abstract

The invention relates to the technical field of one-way valves and aims at providing a swing check valve. The swing check valve comprises a valve body, a valve cover, a rotating shaft and a valve clack, wherein the rotating shaft is sleeved with a torsion spring capable of relatively twisting and generating a torsion force; one extending end of the torsion spring is a rotating end, and the other extending end is a working end; the working end is fixedly connected with the valve clack; the rotating end is fixedly connected with the rotating shaft; and the rotating end can rotate in the rotatingdirection of the valve clack so that the working end can twist to generate the torsion force; one end of the rotating shaft is provided with a spline shaft extending in the axial direction; a flower-type groove matched with the valve body is formed in the valve body; and the rotating shaft can move in the shaft axis direction of the rotating shaft, and the movable distance is greater than the length of the spline shaft. The swing check valve solves the problem that when the swing check valve is installed in a non horizontal pipeline and mediums flow from top to bottom, the valve clack cannotcompletely seal a medium outlet due to the influence of self weight, so that the check valve loses the function of preventing the medium backflow.

Description

technical field [0001] The invention relates to the technical field of check valves, in particular to an adjustable swing check valve. Background technique [0002] Check valve, also known as one-way valve or check valve, is used to prevent the medium in the pipeline from flowing backward. When the medium in the pipeline flows forward, the disc of the check valve automatically opens under the action of the medium force, and when the medium in the pipeline flows in the reverse direction, the valve disc automatically closes under the action of the medium force. The swing check valve has a valve stem and an inclined valve disc that can rotate around the valve stem. The valve disc is installed at the medium inlet. When the medium flows backwards, the valve disc can rotate toward the medium inlet to close the inlet. [0003] In the prior art, the swing check valve can be installed on non-horizontal pipelines, but the flow direction of the medium can only be from bottom to top du...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K15/03
CPCF16K15/033
Inventor 郑嗣堡
Owner ZHONGCHI VALVE IND GRP CO LTD
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