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Composite butterfly check valve

A kind of check valve and butterfly technology, applied in the field of compound butterfly check valve, which can solve the problems of imperfect valve structure and other problems

Inactive Publication Date: 2018-09-14
杭州潮响信息技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned valve structure still exists and is not perfect. For example, the butterfly valve and the check valve are simply installed in the same flow channel structure through superimposition, and the simple superposition combination cannot well reflect the advantages of the two valves. come out

Method used

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  • Composite butterfly check valve
  • Composite butterfly check valve
  • Composite butterfly check valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment one: if Figure 1-8As shown, this embodiment includes a valve body 1 provided with a fluid channel 2 and a valve stem 3 with one end located in the valve body 1. The fluid channel 2 includes an inlet channel 21, a valve core channel 22 and an outlet channel 23. The valve core Inside the flow channel 22 is installed a spool assembly 4 that cooperates with the valve stem 3 and is used to close or open the inlet channel. The valve core assembly 4 includes a check plate 42 connected to the valve core flow channel 22 through a first rotating shaft hinge 41 and used to close or open the inlet. The check plate 42 is provided with areas on both sides of the check plate 42 for communication. The valve hole 423 of the valve hole 423 is provided with a vertically installed second rotating shaft 43 at the bottom of the valve hole 423, and the second rotating shaft 43 and the valve hole 423 are on the same plane. Here, the fact that the valve hole 423 communicates with t...

Embodiment 2

[0036] Embodiment 2: The only difference from Embodiment 1 is that the opening of the through hole 421 is equipped with an anti-off block for preventing the limit shaft 45 from coming out of the through hole 421. The setting of the anti-off block here will not hinder The entry and exit of the driving end 31 of the valve rod 3 . The specific solution is to control the size of the valve stem 3, so that the valve stem 3 avoids the position of the anti-off stopper, so that the valve stem 3 can freely enter and exit the through hole 421, and when the valve stem 3 rotates, the valve stem 3 can avoid Open the anti-off block, and do not interfere with each other. Wherein, in addition to being arranged at the opening of the through hole 421, the anti-off block can also be arranged at the middle or lower part of the through hole 421, as long as it can prevent the limit shaft 45 from entering without interfering with the limit shaft 45 and get final product. In this embodiment, since th...

Embodiment 3

[0037] Embodiment 3: The difference from Embodiment 1 is that a first magnetic piece is provided at the driving end 31 of the valve stem 3, and a second magnetic piece is provided at the end of the limit shaft 45 opposite to the driving end 31 of the valve stem 3, The magnetic force between the first magnetic part and the second magnetic part repels each other. The wall of the through hole 421 is provided with a third magnetic piece that is magnetically attracted to the second magnetic piece, and the second magnetic piece is attracted by the third magnetic piece, which reduces the possibility of the limiting shaft 45 coming out of the through hole.

[0038] In the present invention, if figure 1 The second rotation axis shown is in the vertical direction. The vertical here does not only refer to the angle of view shown in the figure. If the valve as a whole deflects, the second rotation axis can also deflect, and the valve stem, blind hole, through hole It only needs to be con...

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PUM

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Abstract

The invention discloses a composite butterfly check valve. The composite butterfly check valve comprises a valve body provided with a valve element runner, and a valve rod; a valve element assembly ismounted in the valve element runner; the valve element assembly comprises a check plate, a butterfly plate, a through hole, a limiting shaft and a return spring, wherein the check plate is hinged into the valve element runner and used for closing or opening an inlet; the check plate is provided with a valve hole; the butterfly plate is rotationally arranged in the valve hole through a second rotating shaft; a blind hole is formed in the upper part of the butterfly plate; a blind hole guide groove is formed in the hole wall of the blind hole; the through hole is vertically formed in the upperpart of the check plate; a through hole guide groove is formed in the hole wall of the through hole; the limiting shaft is inserted in the blind hole; a limiting shaft guide block is convexly arrangedon the peripheral wall of the limiting shaft; the return spring is mounted in the blind hole; the limiting shaft is provided with a limiting hole for inserting in a driving end; and the valve rod andthe valve body are in sliding and rotating tight fit. The composite butterfly check valve achieves the functions of a check valve and a butterfly valve to widen the application working conditions; and due to reasonable structure and reduction of the loss, the service life of the valve is prolonged.

Description

technical field [0001] The invention relates to a check valve, in particular to a composite butterfly check valve. Background technique [0002] The check valve only allows the medium to flow in one direction. When the fluid flows in the opposite direction, the fluid pressure makes the check valve core close, thereby cutting off the flow of the medium. Butterfly valve, also known as butterfly plate valve, is a regulating valve with simple structure. Its closing part (disc or check plate) is a disc, which rotates around the valve shaft to achieve opening and closing. It can be used for switch control of low-pressure pipeline media. . As a regulating valve, the butterfly valve can adjust the flow characteristics of the flowing medium. [0003] With the continuous development of industry, there are more and more engineering application scenarios for valves, and the functional requirements for valves are getting higher and higher. However, the existing valves more or less hav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K15/03F16K1/22F16K1/36
CPCF16K15/03F16K1/22F16K1/36
Inventor 林哲刘振兴朱祖超张光王博文
Owner 杭州潮响信息技术有限公司
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