CN201462128U

CN201462128U - Water-proof ventilation valve

Info

Publication number: CN201462128U
Application number: CN200920127020XU
Authority: CN
Inventors: 胡良俊; 于进强
Original assignee: Chongqing Jinmei Communication Co Ltd
Current assignee: Chongqing Jinmei Communication Co Ltd
Priority date: 2009-04-15
Filing date: 2009-04-15
Publication date: 2010-05-12
Anticipated expiration: 2019-04-15

Abstract

The utility model discloses a water-proof ventilation valve, which comprises a main body, an inner ring, a dust-proof metal layer, a water-proof ventilation compound layer and an O-shaped sealing ring, wherein one end of the main body is provided with threads; the end face at the other end of the main body is provided with a circular groove; the bottom surface of the groove and the end face at a thread end form a through hole, and the diameter of the through hole is less than that of the circular groove; the water-proof ventilation compound layer and the dust-proof metal layer are paved on the bottom surface of the circular groove orderly; the inner ring is clamped on the inner wall of the circular groove and presses the water-proof ventilation compound layer and the dust-proof metal layer tightly; and the O-shaped sealing ring makes the thread end of the main body and an installation surface airtight. The water-proof ventilation valve has the advantages of water (moisture) resistance, dust prevention, electromagnetic radiation prevention, good directional ventilation property, fast ventilation, and equipment protection degree reaching IP68 levels.

Description

A kind of waterproof vent valve

Technical field

The utility model relates to a kind of vent valve, relates in particular to a kind of waterproof vent valve.

Background technique

For the airtight equipment of some housing, the heat that produces during equipment work expands internal gas, very easily cause housing distortion expand (otherwise, when external temperature is higher, can cause the housing depression), if adopt common ventilative processing, make outside aqueous vapor or granule foreign enter enclosure interior again easily, cause device damage, and some equipment is after opening ventilation mouth on the housing, be subjected to electromagnetic interference easily, hide some dangers for for the normal operation of equipment.

The model utility content

Based on the practical problem of addressing in the background technique, the utility model proposes a kind of waterproof vent valve, its structure is: it comprises main body, interior ring, dustproof metal layer, waterproof and breathable composite bed and O RunddichtringO; Main body one end is a screw thread, and the other end end face has a circular groove, and groove floor and threaded end end face form through hole, and through-hole aperture is less than the circular groove diameter; Waterproof and breathable composite bed, dustproof metal layer are laid on the circular groove bottom surface in turn, and interior ring is stuck on the circular groove inwall and with waterproof and breathable composite bed and dustproof metal layer and compresses; The O RunddichtringO makes the threaded end of main body and attachment face airtight.Also be provided with the mounting groove that is complementary with installing device on the end face of body recess end.

Useful technique effect of the present utility model is: waterproof (aqueous vapor), dustproof, anti-electromagnetic radiation, two-way good permeability, ventilating fast can reach the IP68 level to the protection of equipment.

Description of drawings

Fig. 1, the utility model section of structure;

Fig. 2, the utility model body recess end plan view;

Fig. 3, the utility model profile tri-dimensional picture one;

Fig. 4, the utility model profile tri-dimensional picture two;

Fig. 5, the utility model working principle schematic representation;

Among the figure: main body 1, interior ring 2, dustproof metal layer 3, waterproof and breathable composite bed 4, O RunddichtringO 5, mounting groove 6.

Embodiment

Referring to Fig. 1, at the deficiencies in the prior art, the utility model proposes a kind of waterproof vent valve: its structure is: main body 1 one ends are screw thread, and the other end end face has a circular groove, groove floor and threaded end end face form through hole, and through-hole aperture is less than the circular groove diameter; On the circular groove bottom surface, lay a waterproof and breathable composite bed 4 earlier, on waterproof and breathable composite bed 4, lay a dustproof metal layer 3 again, (it is shaped as ring-type to interior ring 2, is stuck in as shown in Figure 2) on the circular groove inwall and with waterproof and breathable composite bed 4 and dustproof metal layer 3 to compress; O RunddichtringO 5 makes the threaded end of main body 1 and attachment face airtight.The end face of main body 1 groove ends is provided with the mounting groove 6 (referring to Fig. 3) that is complementary with installing device.

Working principle: referring to accompanying drawing 5, box closed shell as shown in the figure, waterproof vent valve is threaded with housing, joint (attachment face) is by O RunddichtringO 5 airtight (referring to Fig. 4), enclosure interior is communicated with external environmemt by the through hole of groove floor and threaded end end face, when equipment work, the enclosure interior temperature raises, air pressure inside is greater than external pressure, air in the housing just flows to outside by waterproof vent valve, the original a small amount of aqueous vapor of enclosure interior is discharged (further dehumidifying) by waterproof and breathable composite bed 4 outside machine; When equipment is not worked (or ambient temperature is higher than the enclosure interior temperature), gas can flow to enclosure interior from external environmemt, and airborne aqueous vapor is isolated by the waterproof and breathable composite bed 4 of waterproof vent valve, plays the purpose of waterproof; The environmental work that if equipment is more at some dust or salt fog is dense, dustproof metal layer 3 has just played a role, and dustproof metal layer 3 can stop that outside granule foreign enters in the housing, has also played the certain protection effect to waterproof and breathable composite bed 4; Dustproof metal layer 3 has also played the effect of magnetic shielding at opening to enclosure interior, prevents that external electromagnetic interference from influencing equipment and normally moving.

Dustproof metal layer 3 and waterproof and breathable composite bed 4 can be selected some commercially available waterproof, ventilative, dust-proof material for use, and its concrete choice criteria can be according to the security level choose reasonable of equipment work needs.

Claims

1. waterproof vent valve is characterized in that: it comprises main body (1), interior ring (2), dustproof metal layer (3), waterproof and breathable composite bed (4) and O RunddichtringO (5); Main body (1) one end is a screw thread, and the other end end face has a circular groove, and groove floor and threaded end end face form through hole, and through-hole aperture is less than the circular groove diameter; Waterproof and breathable composite bed (4), dustproof metal layer (3) are laid on the circular groove bottom surface in turn, and interior ring (2) is stuck on the circular groove inwall and with waterproof and breathable composite bed (4) and dustproof metal layer (3) and compresses; O RunddichtringO (5) makes the threaded end and the attachment face of main body (1) airtight.

2. waterproof vent valve according to claim 1 is characterized in that: the end face of main body (1) groove ends is provided with the mounting groove (6) that is complementary with installing device.