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Air leakage valve capable of reducing noise and fatigue damage

A leakage valve and fatigue technology, applied in diaphragm valves, balance valves, valve devices, etc., can solve problems such as easy noise, elastic support fatigue damage, etc., and achieve the effect of prolonging service life and reducing fatigue damage

Pending Publication Date: 2022-04-22
常州威图流体科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in order to solve the problem that when the valve plate of the air leakage valve in the prior art is opened under the action of the gas pressure difference on both sides, the pressure fluctuation of the gas causes the valve plate to vibrate at a certain frequency, resulting in easy occurrence of Noise, and the problem of accelerated fatigue damage to elastic supports, now provides a leak valve that reduces noise and fatigue damage

Method used

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  • Air leakage valve capable of reducing noise and fatigue damage
  • Air leakage valve capable of reducing noise and fatigue damage
  • Air leakage valve capable of reducing noise and fatigue damage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] like Figure 1-9 As shown, a leak valve for reducing noise and fatigue damage includes a diaphragm structure and a valve housing 1 with an inner cavity. The intake side 101 has at least one first air hole 1011 and at least one second air hole 1012. The valve housing 1 can be a spliced ​​structure. The valve housing 1 used in this embodiment specifically includes a stacked upper valve cover 1-1 and Lower bonnet 1-2, an inner cavity is formed between the upper bonnet 1-1 and the lower bonnet 1-2, the inner side wall of the upper bonnet 1-1 is the side wall of the gas outlet side 101 of the inner cavity, and the lower bonnet 1 The inner wall of -2 is the side wall of the intake side 102 of the inner cavity;

[0058] The diaphragm structure includes a diaphragm 3 and an intermediate valve plate 2, and the diaphragm 3 and the intermediate valve plate 2 are arranged separately;

[0059] Regarding the installation and structure of the diaphragm 3:

[0060] The diaphragm 3 i...

Embodiment 2

[0080] like Figure 10-16 As shown, the structure of the leakage valve in this embodiment is basically the same as that in Embodiment 1, the difference is that the connection part 201 includes a first connection part 2011 and a second connection part 2012, and the first connection part 2011 and the inner The side wall of the inlet side 101 of the cavity is fixedly connected, and the valve body 202 is connected to the first connecting part 2011 through the second connecting part 2012, and at least one hole 2012a or groove 2012b penetrates through the second connecting part 2012.

[0081] Preferably, the cross-sectional shape of the hole portion 2012a or the groove portion 2012b may be circular, rectangular, polygonal, etc., which is not limited here.

[0082] The first connecting part 2011 and the second connecting part 2012 are integrally formed or fixedly connected, and the second connecting part 2012 and the valve body 202 can be integrally formed or fixedly connected; prefe...

Embodiment 3

[0093] like Figure 16-18 As shown, the leakage valve in this embodiment is basically the same in structure as the leakage valves in Embodiments 1 and 2, the difference is that the diaphragm 3 and the middle valve plate 2 are integrally formed.

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Abstract

The invention relates to the technical field of fluid control, in particular to a leak valve capable of reducing noise and fatigue damage, which comprises a diaphragm structure and a valve shell with an inner cavity, and the diaphragm structure comprises a diaphragm and a middle valve plate; the diaphragm is arranged in the inner cavity, a first valve cavity isolated from the second air hole is formed between the diaphragm and the air outlet side of the inner cavity, and the middle valve plate is used for generating elastic deformation when air is introduced into the first air hole to form a valve channel communicating the first air hole with the first valve cavity; the maximum moving distance of the valve plate body can be effectively limited through the limiting boss, the valve plate body is mainly subjected to the single-side gas pressure effect in the inflation process, the phenomenon that when the two sides of the valve plate body are subjected to the gas pressure effect at the same time, due to fluctuation of the gas pressure difference of the two sides, the middle valve plate is forced to vibrate, noise is generated, and fatigue damage is caused is avoided; the maximum deformation of the connecting part is limited, the fatigue damage and even the risk of failure in the working process of the middle valve plate are further reduced, and the service life of the air leakage valve is prolonged.

Description

technical field [0001] The invention relates to the technical field of fluid control, in particular to an air leakage valve for reducing noise and fatigue damage. Background technique [0002] The advent of smart wearable devices such as wrist sphygmomanometers, smart watches and smart bracelets has greatly facilitated people's lives, and thus has been favored by the market. As its core components, micro air pumps and air leak valves have also been favored by the industry extensive attention. Improving the performance of micropumps and leak valves has become a key factor in improving product performance. In order to realize the miniaturization of the structure, the leakage valve applied in the smart wearable device usually adopts the diaphragm structure to divide the valve cavity into the air inlet side and the air outlet side. Air pump and electronic sphygmomanometer, air valve, integrated air pump and wearable electronic sphygmomanometer disclosed in application with pub...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K47/02F16K7/17F16K17/164F16K27/02
CPCF16K47/02F16K7/17F16K7/126F16K17/164F16K27/0236
Inventor 不公告发明人
Owner 常州威图流体科技有限公司
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