阅读说明：本技术 一种具有阻隔水汽作用的透气阀 (Air-permeable valve with water vapor blocking function ) 是由 汪水 于 2019-08-30 设计创作，主要内容包括：本发明公开了一种具有阻隔水汽作用的透气阀,要解决的是现有防水透气阀存在的问题。本产品包括膜片、阀体和弹性件,所述阀体内设置有密封腔体,阀体下端的外部安装有密封件,阀体下端安装有防护件,膜片固定在阀体上,弹性件安装在阀体内并且弹性件位于膜片的上部,弹性件的上方覆盖有压紧件并且压紧件的上方固定有压盖。本产品的气压最终达到内外压力平衡的状态,隔绝外部的水汽或水蒸汽进入到密封腔体内部,且可以长期使用,无需定时更换,可以避免上述凝露问题的发生及维护成本减低,并最终提升产品及设备原器件等的使用寿命；本产品通过顶针和膜片的配合,实现在定点压力下极速泄压爆破,防止压力过大对其他结构件造成损坏。(The invention discloses a vent valve with a water vapor blocking effect, and aims to solve the problems of the existing waterproof vent valve. This product includes diaphragm, valve body and elastic component, be provided with seal chamber in the valve body, the externally mounted of valve body lower extreme has the sealing member, and the protection piece is installed to the valve body lower extreme, and the diaphragm is fixed on the valve body, and the elastic component is installed in the valve body and the elastic component is located the upper portion of diaphragm, and the top of elastic component covers and is stamped the piece and the top that compresses tightly is fixed with the gland. The air pressure of the product finally reaches a state of balanced internal and external pressure, so that external water vapor or water vapor is isolated from entering the sealed cavity, the product can be used for a long time without being replaced regularly, the condensation problem can be avoided, the maintenance cost is reduced, and the service lives of the product, original devices of equipment and the like are finally prolonged; this product passes through the cooperation of thimble and diaphragm, realizes the very fast pressure release blasting under the fixed point pressure, prevents that pressure is too big to cause the damage to other structures.)

1. The utility model provides a ventilation valve with separation steam effect, includes diaphragm (3), valve body (4) and elastic component (5), be provided with seal chamber in valve body (4), externally mounted has sealing member (2) of valve body (4) lower extreme, and protection piece (1) are installed to valve body (4) lower extreme, its characterized in that, diaphragm (3) are fixed on valve body (4), and install in valve body (4) elastic component (5) and elastic component (5) are located the upper portion of diaphragm (3), and the top of elastic component (5) covers and has to compress tightly piece (6) and the top that compresses tightly piece (6) is fixed with gland (7).

2. The ventilation valve with water vapor barrier function according to claim 1, characterized in that the protection piece (1) is made of a protection steel sheet, and the elastic piece (5) is made of a soft rubber elastic material.

3. The gas vent valve with water vapor barrier function according to claim 1, wherein a thimble is arranged in the valve body (4).

4. The vapor-barrier vent valve as claimed in claim 1, wherein the protective element (1) is fastened to the valve body (4) by means of heat fusion, and the membrane (3) is fixed to the valve body (4) by means of heat fusion or ultrasonic welding.

5. The gas vent valve with water vapor barrier function according to claim 1, wherein interference fit is adopted between the sealing member (2) and the valve body (4) and between the elastic member (5) and the pressing member (6).

6. The gas vent valve with water vapor barrier function according to claim 1, wherein the pressing piece (6) and the pressing cover (7) are of an integral structure.

7. The breather valve with water vapor barrier function according to claim 1, characterized in that a plurality of straight-through groove structures with different shapes and specifications are arranged in the valve body (4).

8. The gas vent valve with water vapor barrier function according to claim 1 or 7, characterized in that a protective structure is arranged on one side of the sealed cavity of the valve body (4).

Technical Field

The invention relates to the field of sealing products, in particular to a vent valve with a water vapor barrier function.

Background

Be applied to waterproof ventilation valve on seal chamber in the different fields of market at present, the primary action plays waterproof, ventilative effect, its common point lies in all needing two-way ventilative, ventilative function mainly depends on there is one deck polymer film inside the product, the principal ingredients is polytetrafluoroethylene, its principle is for there is the pressure differential condition when the internal and external environment, will make gas realize two-way ventilation function through this layer film, be in very humid environment when natural environment, steam can act on in seal chamber's ventilative valve or the explosion-proof valve film enter into seal chamber, make and form phenomenons such as condensation in the seal chamber, long-time work easily causes inside functional numerical value to reduce.

In order to guarantee the service life of a product, the final effect is not stable due to the fact that a desiccant and other moisture-proof prevention devices are placed inside a sealed cavity in a conventional mode at present, the service life is limited, and the maintenance cost and the use procedures are increased due to the fact that the desiccant and other moisture-proof prevention devices need to be regularly maintained and replaced after long-term use. Related research is also being conducted.

Disclosure of Invention

An object of an embodiment of the present invention is to provide a vent valve with a function of blocking water vapor, so as to solve the problems mentioned in the background art.

In order to achieve the above purpose, the embodiments of the present invention provide the following technical solutions:

a ventilation valve with the function of blocking water vapor comprises a diaphragm, a valve body and an elastic piece, wherein a sealing cavity is arranged in the valve body, a sealing piece is arranged outside the lower end of the valve body, a protection piece is arranged at the lower end of the valve body, the diaphragm is fixed on the valve body, the elastic piece is arranged in the valve body and is positioned on the upper portion of the diaphragm, a pressing piece covers the upper portion of the elastic piece, a pressing cover is fixed above the pressing piece and covers the uppermost end of the valve body, when the internal pressure generated along with the temperature rise in the valve body is larger than the external pressure, positive pressure difference is formed, at the moment, outward exhaust is realized through the bouncing effect of the diaphragm and the elastic piece, finally when the internal pressure of the valve body is balanced with the external pressure, the elastic piece is an elastic body and can automatically recover to the previous state, when the internal pressure is smaller than the external pressure due to the temperature reduction in the valve body, the elastic part is enabled to compress the sealing surface, so that the instant sealing effect is realized, external water vapor or water vapor is prevented from being blocked outside the elastic part, the problem of isolating external water vapor and water vapor is finally solved, and the external dust, salt mist particles and waterproof functions can be realized.

As a further scheme of the embodiment of the invention: the protection piece adopts the protection steel sheet, and the protecting effect is good, and the elastic component adopts the preparation of flexible glue elastic material, and when forming the negative pressure, flexible glue elastic material can ftracture this moment, and the fracture position compresses tightly sealed face, and sealed effect is better.

As a further scheme of the embodiment of the invention: the ejector pin is arranged in the valve body, when the inside of the sealing cavity of the product is in an abnormal state, the internal instant air pressure can act on the diaphragm at the moment, and the ejector pin of the valve body punctures (or the diaphragm breaks away from the valve body instantly) under the combined action, so that the diaphragm punctures instantly, and the effect of direct explosion-proof pressure relief is achieved through the elastic action of the elastic piece and the outside.

As a further scheme of the embodiment of the invention: the protection piece adopts the mode of hot melt to fasten with the valve body, and the diaphragm adopts hot melt or ultrasonic bonding's mode to be fixed with the valve body, convenient operation, and fixed effectual is difficult for droing.

As a further scheme of the embodiment of the invention: all adopt interference fit between sealing member and the valve body and between elastic component and the compressing tightly piece, sealing member and valve body adopt modes such as screw thread, buckle, flange to install, excellent in use effect.

As a further scheme of the embodiment of the invention: the pressing piece and the gland adopt an integrated structure, are not easy to fall off and have good connection firmness.

As a further scheme of the embodiment of the invention: the valve body is provided with a plurality of straight through groove structures with different shapes and specifications and is mainly used for ventilation, support or other functions.

As a further scheme of the embodiment of the invention: a protection structure is arranged on one side of the sealing cavity of the valve body, and has a protection function, and a steel mesh or a latticed supporting layer is preferably selected as the protection structure.

Compared with the prior art, the embodiment of the invention has the beneficial effects that:

the product is reasonable in design, the air pressure of a finished product finally reaches a state of internal and external pressure balance through the matching of the valve body, the sealing element, the membrane, the elastic element, the pressing element and other components, external water vapor or water vapor can be prevented from entering the sealing cavity, the product can be used for a long time, and the product does not need to be replaced at regular time, so that the condensation problem can be avoided, the maintenance cost is reduced, and the service lives of the product, original devices of equipment and the like are finally prolonged;

the product can realize rapid pressure relief blasting under fixed-point pressure through the matching of the ejector pin and the diaphragm, and prevent other structural parts from being damaged due to overlarge pressure;

the protection grade of the product reaches the standard above IP67, and the product conforms to the IPXXD and IPXXB standards and has wide application range.

Drawings

Fig. 1 is an exploded view of a breather valve with a moisture barrier.

Fig. 2 is a perspective view of a breather valve with a moisture barrier function.

Fig. 3 is a bottom view of a breather valve with a moisture barrier.

Fig. 4 is a cross-sectional view of a breather valve with a moisture barrier function.

Fig. 5 is a schematic structural diagram of a valve body in the vent valve with the function of blocking water vapor.

Wherein: 1-protective part, 2-sealing part, 3-diaphragm, 4-valve body, 5-elastic part, 6-pressing part and 7-gland.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Example 1

A ventilation valve with the function of blocking water vapor comprises a diaphragm 3, a valve body 4 and an elastic part 5, wherein a sealing cavity is arranged in the valve body 4, a sealing part 2 is arranged outside the lower end of the valve body 4, a protection part 1 is arranged at the lower end of the valve body 4, the diaphragm 3 is fixed on the valve body 4, the elastic part 5 is arranged in the valve body 4, the elastic part 5 is positioned on the upper part of the diaphragm 3, a pressing part 6 is covered on the upper part of the elastic part 5, a pressing cover 7 is fixed on the upper part of the pressing part 6, the pressing cover 7 is covered on the uppermost end of the valve body 4, when the internal pressure generated along with the temperature rise in the valve body 4 is greater than the external pressure, positive pressure difference is formed, the outward exhaust is realized through the bouncing effect of the diaphragm 3 and the elastic part 5, finally when the internal pressure of the valve body 4 is balanced with the external pressure, the elastic part 5 is an, form the negative pressure this moment, on external steam or steam can be used for elastic component 5 through the effort of outside-in, impel elastic component 5 to compress tightly sealed face, realize sealed effect in the twinkling of an eye to make external steam or steam separation outside elastic component 5, finally reached the problem of isolated outside steam and steam, can realize external separation dust, salt fog granule and waterproof function.

In order to have better using effect, the protection part 1 is made of a protection steel sheet, the protection effect is good, the elastic piece 5 is made of a soft rubber elastic material, a plurality of straight through grooves which are not limited in shape are arranged on the periphery or in the middle of the elastic piece, the straight through grooves are irregularly arranged, the shape is not limited, when negative pressure is formed, the soft rubber elastic material can crack, the crack position compresses a sealing surface, and the sealing effect is better.

Further, the valve body 4 is provided with a thimble, when the inside of the sealed cavity of the product is in an abnormal state, the internal instant air pressure can act on the diaphragm 3 at the moment, and the thimble of the valve body 4 punctures (or the diaphragm 3 breaks away from the valve body 4 in the moment) to enable the diaphragm 3 to puncture in the moment, so that the effect of direct explosion-proof pressure relief is achieved through the elastic action of the elastic part 5 and the outside.

Furthermore, a plurality of straight through groove structures with different shapes and specifications are arranged in the valve body 4, and the straight through groove structures are matched with the straight through grooves in the elastic piece and are mainly used for ventilation, support or other functions.

Furthermore, a protection structure is arranged on one side of the sealing cavity of the valve body 4, and has a protection function, and a steel mesh or a latticed supporting layer is preferably selected as the protection structure.

Example 2

A ventilation valve with the function of blocking water vapor comprises a diaphragm 3, a valve body 4 and an elastic part 5, wherein a sealing cavity is arranged in the valve body 4, a sealing part 2 is arranged outside the lower end of the valve body 4, a protection part 1 is arranged at the lower end of the valve body 4, the diaphragm 3 is fixed on the valve body 4, the elastic part 5 is positioned in the valve body 4, the elastic part 5 is positioned on the upper part of the diaphragm 3, a pressing part 6 is pressed in the upper part of the elastic part 5, a gland 7 is pressed in the upper part of the pressing part 6, the gland 7 covers the uppermost end of the valve body 4, when the internal pressure generated along with the temperature rise in the valve body 4 is greater than the external pressure, positive pressure difference is formed, at the moment, the outward exhaust is realized through the elastic action of the diaphragm 3 and the elastic part 5, and finally when the internal pressure of the valve body 4 is balanced with the external pressure, the elastic part 5 is an, form the negative pressure this moment, on external steam or steam can be used for elastic component 5 through the effort of outside-in, impel elastic component 5 to compress tightly sealed face, realize sealed effect in the twinkling of an eye to make external steam or steam separation outside elastic component 5, finally reached the problem of isolated outside steam and steam, can realize external separation dust, salt fog granule and waterproof function.

In order to ensure the fixing effect, the protection part 1 is fastened with the valve body 4 in a hot melting mode, and the membrane 3 is fixed with the valve body 4 in a hot melting or ultrasonic welding mode, so that the operation is convenient and the falling is not easy to occur.

Further, all adopt interference fit between sealing member 2 and the valve body 4 and between elastic component 5 and the piece 6 that compresses tightly, the cross sectional shape of sealing member 2 is unlimited, and sealing member 2 and valve body 4 adopt modes such as screw thread, buckle, flange to install, excellent in use effect.

Furthermore, the pressing piece 6 and the gland 7 are of an integrated structure, are not easy to fall off, and are good in connection firmness.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.