CN215763490U - Pre-explosion-proof ventilation valve - Google Patents
Pre-explosion-proof ventilation valve Download PDFInfo
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- CN215763490U CN215763490U CN202120355274.8U CN202120355274U CN215763490U CN 215763490 U CN215763490 U CN 215763490U CN 202120355274 U CN202120355274 U CN 202120355274U CN 215763490 U CN215763490 U CN 215763490U
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- main body
- explosion
- breathable film
- elasticity
- top gland
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Abstract
The utility model relates to the technical field of vent valves, in particular to a pre-explosion-proof vent valve which comprises a main body and a top gland, wherein the top end of the main body is fixedly connected with the top gland through threads, an O-shaped sealing ring is nested between the top gland and the main body, and a high-elasticity high-polymer vent membrane is stuck at the middle end in the main body. The pre-explosion-proof vent valve is provided with the high-elasticity high-molecular breathable film, when the device is installed in a sealed case provided with an electronic component, and the pressure in the sealed case rises to about 25KPa, the high-elasticity high-molecular breathable film in the main body expands to a certain height, so that the main body is directly communicated with the outside, the pressure and heat can be quickly released to prevent the sealed case from explosion, and meanwhile, when the pressure is lower than 25KPa, the high-elasticity high-molecular breathable film is restored to the original state to seal the main body with the outside.
Description
Technical Field
The utility model relates to the technical field of vent valves, in particular to a pre-explosion-proof vent valve.
Background
The ventilation valve is that waterproof ventilated membrane combines through form such as moulding plastics, ultrasonic bonding and plastic, metal, other materials such as silica gel, form can inclosed installation component, there is screw thread formula mainly, buckle formula ventilation valve, the main performance index of ventilation valve has two indexs of ventilative volume and protection level, play waterproof ventilation valve's function during normal work, when airtight container internal pressure risees the limit value because of unusual, the ventilated membrane is inoperative, inside and outside direct UNICOM, can not obtain quick release pressure and heat and lead to the explosion of sealed machine case.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a pre-explosion-proof vent valve to solve the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an explosion-proof breather valve in advance, includes main part and top gland, the top of main part is through screw thread fixedly connected with top gland, nested between top gland and the main part is provided with O shape sealing washer, the inside middle-end of main part is pasted and is had high elasticity polymer ventilated membrane.
Preferably, the through holes are formed in the main body and the side wall, and threads are arranged on the outer surface of the lower end of the main body.
Preferably, the main body, the high-elasticity high-molecular breathable film and the top gland are aligned with each other along the central line.
Preferably, small through holes are formed in the high-elasticity high-molecular breathable film.
Compared with the prior art, the utility model has the beneficial effects that:
1. the pre-explosion-proof vent valve is provided with the high-elasticity high-molecular breathable film, when the device is installed in a sealed case provided with an electronic component, and the pressure in the sealed case rises to about 25KPa, the high-elasticity high-molecular breathable film in the main body expands to a certain height, so that the main body is directly communicated with the outside, the pressure and heat can be quickly released to prevent the sealed case from explosion, and meanwhile, when the pressure is lower than 25KPa, the high-elasticity high-molecular breathable film is restored to the original state to seal the main body with the outside.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a cross-sectional partial structure of a main body of the present invention;
FIG. 3 is a schematic exploded view of the main body of the present invention;
in the figure: a main body 1, an O-shaped sealing ring 2, a high-elasticity high-molecular ventilated membrane 3 and a top gland 4.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides an explosion-proof breather valve in advance, includes main part 1 and top gland 4, and the top of main part 1 is through screw thread fixedly connected with top gland 4, and nested between top gland 4 and the main part 1 is provided with O shape sealing washer 2, and the inside middle-end of main part 1 is pasted and is had high elasticity polymer ventilated membrane 3.
Further, the through holes are formed in the main body 1 and the side wall, threads are arranged on the outer surface of the lower end of the main body 1, and the main body 1 can be conveniently fixed to a required position through the threads.
Further, the main body 1, the high-elasticity high-molecular breathable film 3 and the top gland 4 are aligned with each other at the central line.
Furthermore, the high-elasticity high-molecular breathable film 3 is internally provided with small through holes, so that the air pressure in the main body 1 can be conveniently discharged.
The working principle is as follows:
firstly, when the main body 1 is fixed in a sealed case of an electronic component through threads, and the pressure in the sealed case rises to about 25KPa, the high-elasticity-molecule breathable film in the main body expands to a certain height, so that the main body is directly communicated with the outside, the pressure and heat can be quickly released to prevent the explosion of the sealed case, and meanwhile, when the pressure is lower than 25KPa, the high-elasticity-molecule breathable film is restored to the original state, so that the main body is sealed with the outside.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The utility model provides an explosion-proof breather valve in advance, includes main part (1) and top gland (4), there is top gland (4) on the top of main part (1) through screw thread fixedly connected with, its characterized in that: an O-shaped sealing ring (2) is arranged between the top gland (4) and the main body (1) in a nested mode, a high-elasticity high-molecular breathable film (3) is pasted at the middle end in the main body (1), and small through holes are formed in the high-elasticity high-molecular breathable film (3).
2. A pre-explosion vent valve as set forth in claim 1, wherein: the through holes are formed in the inner portion and the side wall of the main body (1), and threads are arranged on the outer surface of the lower end of the main body (1).
3. A pre-explosion vent valve as set forth in claim 1, wherein: the main body (1), the high-elasticity high-molecular breathable film (3) and the top gland (4) are aligned with each other at the central line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120355274.8U CN215763490U (en) | 2021-02-04 | 2021-02-04 | Pre-explosion-proof ventilation valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120355274.8U CN215763490U (en) | 2021-02-04 | 2021-02-04 | Pre-explosion-proof ventilation valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215763490U true CN215763490U (en) | 2022-02-08 |
Family
ID=80093365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120355274.8U Active CN215763490U (en) | 2021-02-04 | 2021-02-04 | Pre-explosion-proof ventilation valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215763490U (en) |
-
2021
- 2021-02-04 CN CN202120355274.8U patent/CN215763490U/en active Active
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