CN201909072U - Waterproof, dustproof, ventilated and heat-dissipating breathing device of outdoor seal equipment - Google Patents

Abstract

The utility model discloses a waterproof, dustproof, breathable and heat-dissipating respirator for outdoor sealing equipment, which comprises a valve body, a protective cover, and a composite breathable membrane, and the composite breathable membrane is located in a groove in the middle of the valve seat end face of the valve body , and is directly injection molded into one body with the main body, the protective cover is buckled and pressed on the upper surface of the valve seat end of the valve body, and forms a plurality of uniformly distributed ventilation holes in the circumferential direction, the threaded section of the valve body and the shell of the outdoor sealing device Threaded connection, a through hole is set between the groove and the end surface of the threaded section. This product is waterproof above IP68, has good dustproof performance, high water pressure resistance, strong pressure resistance, large air flow, good temperature resistance, simple structure, easy installation, and can be easily consistent with the appearance and structure of the application product. The product assembly is more perfect, the cost of materials and maintenance is low, and the service life is long.

Description

Waterproof, dustproof, breathable and cooling respirator for outdoor sealing equipment

technical field

The utility model relates to the internal and external pressure balance structure of outdoor sealing equipment and the technical field, in particular to a waterproof, dustproof, breathable and heat-dissipating respirator for outdoor sealing equipment.

Background technique

After the outdoor sealing equipment (especially the pressure imbalance inside and outside the pressure equipment caused by high temperature) changes from the non-working state to the working state or from the working state to the non-working state, due to the temperature rise or cooling inside and outside the equipment shell, the equipment shell will be damaged. Unbalanced internal and external pressures lead to deformation and air leakage of the equipment shell; in addition, as the equipment works over time, water ingress and external dust particles will also occur. For example, if it is an outdoor sealed communication equipment, it will cause damage to the communication cabinet. The internal electronic components are damaged, and when it rains heavily in summer, negative pressure is generated inside the equipment due to changes in the equipment environment, resulting in water absorption from the outside to the inside, reducing the service life of the communication cabinet.

Chinese utility model patent ZN 200920127020.X discloses a waterproof and breathable valve, which includes a main body, an inner ring, a dustproof metal layer, a waterproof and breathable composite layer and an O-shaped sealing ring; one end of the main body is threaded, and the other end has a circular concave Groove, the bottom surface of the groove and the end surface of the thread form a through hole, and the diameter of the through hole is smaller than the diameter of the circular groove; the waterproof and breathable composite layer and the dustproof metal layer are laid on the bottom surface of the circular groove in sequence, and the inner ring is stuck on the circular groove. On the inner wall of the groove and press the waterproof and breathable composite layer and the dustproof metal layer; the O-shaped sealing ring makes the threaded end of the main body and the installation surface airtight. The waterproof and breathable valve is waterproof (water vapor), dustproof, and electromagnetic radiation resistant. It has good two-way air permeability and fast air permeability. The protection of equipment can reach IP68 level, but it also has the following disadvantages:

(1) Its dust-proof metal layer and waterproof and breathable composite layer are compressed and fixed by the inner ring, which is completely directly exposed to the air, and is easy to be directly washed and eroded by external rain, air, and dust, and its service life is not long;

(2) The cost of the metal material used is relatively expensive (and the bare metal used outdoors requires anti-oxidation treatment). It is not conducive to the market application of outdoor lamps.

(3) The structure is complex. The outermost layer of the non-threaded end of the utility model (that is, the end exposed to the outdoor environment) is a metal layer that prevents electromagnetic radiation and is not a direct waterproof, dustproof and breathable layer, which is suitable for applications in harsh outdoor environments. It is not suitable for the environment, and it also affects the waterproof, breathable, heat dissipation and dustproof effect of outdoor lamps.

(4) The material of the round metal parts is not conducive to operation, maintenance and installation, and it is inconvenient to keep consistent with the appearance and color of the applied product.

Utility model content

The purpose of the utility model is to overcome the deficiencies in the prior art and provide a waterproof, dustproof, breathable and heat-dissipating respirator for outdoor sealing equipment. Long service life, easy installation and disassembly, low material and maintenance costs, and can be easily consistent with the application product structure.

The purpose of this utility model is achieved through the following technical process: the waterproof, dustproof, breathable and heat-dissipating respirator for outdoor sealing equipment includes a valve body, a protective cover, and a composite breathable membrane, specifically: the composite breathable membrane is located on the In the groove in the middle of the end surface of the valve seat of the valve body, and directly injection molded with the valve body, the protective cover is buckled and pressed on the upper surface of the valve seat end surface of the valve body, and forms a plurality of uniformly distributed ventilation holes in the circumferential direction , the threaded section of the valve body is threadedly connected with the casing of the outdoor sealing device, and a through hole is opened between the groove and the end surface of the threaded section.

In order to better realize the utility model, the valve body adopts an injection-molded integrated structure (seat end and threaded section) and technology, reducing various intermediate links and directly molding.

As a preferred solution, a plurality of axial interlocking projections are evenly distributed on the circumferential outer edges of the valve seat end surface of the valve body and the protective cover, and the two are connected through the plurality of axial interlocking protrusions. The buckle protrusions are embedded and combined to form a plurality of circumferentially evenly distributed ventilation holes.

The journal of the threaded section of the valve body is also provided with a concave ring groove to install an O-ring, and the depth of the concave ring groove is 1/2 of the O-ring, so as to ensure that the new model is matched with the application product when it is applied. More airtight and less prone to misalignment during assembly.

The O-shaped sealing ring is an O-shaped silicone sealing ring.

The composite breathable membrane is a waterproof and dustproof composite breathable membrane, and the flux and pressure resistance of the waterproof and dustproof composite breathable membrane are determined according to the volume of the net space in the outdoor sealing device and the temperature rise rate of the lamp.

The waterproof and dustproof composite air-permeable membrane adopts waterproof and air-permeable material based on EPTFE (EPTFE component is expanded polytetrafluoroethylene, which has extremely stable chemical properties, wide temperature application range, and will not age).

The outdoor sealing device is an outdoor cabinet of electronic communication equipment RRU (Remote Radio Unit).

The working principle of the utility model is:

For the communication equipment RRU, the waterproof, dustproof, breathable and heat-dissipating respirator is connected to the internal thread of the RRU shell, and the connection (installation surface) is airtight through the O-shaped sealing ring; the inside of the RRU shell is passed through the waterproof and dustproof composite breathable membrane The micropores communicate with the external environment.

(1) When the sealed RRU equipment is working, the internal temperature of the shell rises, the gas expands, and the pressure increases, and the exhaust is exhausted through the respirator to achieve the balance of internal and external air pressure, so that the stress of the RRU shell is reduced and the entire temperature rises.

(2) When the RRU equipment is not working, especially in harsh environments such as winter or rain, the external air pressure immediately exceeds the internal air pressure of the sealing equipment after the RRU equipment stops working, causing internal and external extrusion. At this time, the internal and external pressure is balanced through the respirator. External air enters the RRU for balance.

As mentioned above, through the adjustment function of the respirator, the internal and external air pressure of the entire RRU equipment is always in a state of dynamic balance. Because the waterproof and dustproof composite breathable membrane has waterproof function, the external water molecules cannot enter, but the internal water molecules can go out, so that the RRU equipment will not be affected by the internal water vapor and moisture, and the light efficiency will be avoided and the damage of internal components will be avoided. The waterproof and dustproof composite breathable membrane also has the function of preventing dust and particles from entering the housing, effectively ensuring the dustproof, waterproof and breathable function of the RRU equipment outdoors.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

(1) The waterproof, dustproof, breathable and heat-dissipating respirator of this outdoor RRU equipment has a waterproof rating of IP68 or higher, a water pressure resistance of 2-10 meters or more, good dustproof performance, large air flow rate of 350ml/Min or more, and high temperature resistance. Well, it is -40° to 125°.

(2) In the integrated molding process, the composite breathable membrane is placed in the fixture of the injection molding equipment for direct injection molding, so that the breathable composite membrane and the valve body are injected into one body, increasing the strength of the breathable composite membrane.

(3) The structure is simple, the injection molding process is simple, the installation and disassembly are convenient, and the maintenance cost is low. At the same time, the protective cover has a good protective effect on the waterproof and dustproof composite breathable membrane. It is more directly washed and eroded by rain, air and dust from the outside, which prolongs the service life.

(4) The material selection of this waterproof, dustproof, breathable and heat-dissipating respirator includes: EPTFE membrane material with waterproof, dustproof, breathable and heat-dissipating, O-shaped silica gel sealing ring with good airtightness, and polyamide plastic with temperature resistance and tensile strength. Other technical materials are available, and the material cost of the utility model is low.

(5) The details of the combination with the application products are well considered to better match the application products.

Description of drawings

Fig. 1 is a three-dimensional structural schematic diagram of the waterproof, dustproof, ventilating, heat-dissipating and breathing of the outdoor sealing device of the present invention.

Fig. 2 is a schematic cross-sectional structure diagram of the waterproof, dustproof, ventilating and heat-dissipating respirator of the outdoor sealing device of the present invention shown;

Fig. 3 is the structural representation of valve body shown in Fig. 1, 2;

Figure 4 is a schematic structural view of the protective cover shown in Figures 1, 2, and 3;

Fig. 5 is a working principle diagram of the waterproof, dustproof, breathable and heat-dissipating respirator of the utility model outdoor sealing equipment.

Detailed ways

The utility model will be further described in detail below in conjunction with the embodiments and accompanying drawings, but the implementation of the utility model is not limited thereto.

Example

As shown in Figures 1, 2, and 3, the waterproof, dustproof, breathable and heat-dissipating respirator of this outdoor sealing device includes a valve body 1, a protective cover 2, and a composite breathable film (not shown in the figure), specifically: the composite breathable The film is located in the groove 1-1 in the middle of the valve seat end surface of the valve body 1, and is directly injection molded into one body with the valve body 1, and the protective cover 2 is pressed on the valve seat end surface of the valve body 1 The upper part, and form a plurality of circumferentially evenly distributed ventilation holes 3, the threaded section of the valve body 1 is threadedly connected with the casing of the outdoor sealing device, and a through hole 1 is opened between the groove 1-2 and the end surface of the threaded section -3.

In order to better realize the utility model, as shown in FIG. 3 , the valve body 1 adopts an injection-molded integral structure (seat end and threaded section) and technology, reducing various intermediate links and directly molding.

As a preferred solution, as shown in Figures 2, 3, and 4, the circumferential outer edges of the valve seat end surface of the valve body 1 and the protective cover 2 are respectively uniformly distributed with a plurality of axial embedding protrusions. The parts 1-2, 2-1 are interlocked and combined by the plurality of axial interlocking protrusions 1-2, 2-1, and form a plurality of vent holes 3 uniformly distributed in the circumferential direction.

The journal of the threaded section of the valve body 1 is also provided with a recessed ring groove 1-4 to install an O-ring 4, and the depth of the recessed ring groove 1-4 is 1/2 of the O-ring 4, thereby ensuring When the utility model is applied, it is closely matched with the applied product and is airtight, and it is not easy to deviate during assembly.

The O-shaped sealing ring 4 is an O-shaped silicone sealing ring.

The composite breathable membrane is a waterproof and dustproof composite breathable membrane, and the flux and pressure resistance of the waterproof and dustproof composite breathable membrane are determined according to the volume of the net space in the outdoor sealing device and the temperature rise rate of the lamp.

The waterproof and dustproof composite air-permeable membrane adopts waterproof and air-permeable material based on EPTFE (EPTFE component is expanded polytetrafluoroethylene, which has extremely stable chemical properties, wide temperature application range, and will not age).

The outdoor sealing device is an outdoor cabinet of electronic communication equipment RRU (Remote Radio Unit).

The above-mentioned embodiment is a preferred implementation mode of the present utility model, but the implementation mode of the present utility model is not limited by the above-mentioned embodiment, and any other changes, modifications and substitutions made without departing from the spirit and principle of the present utility model , combination, and simplification, all should be equivalent replacement methods, and are all included in the protection scope of the present utility model.

Claims (8)

1. the ventilative cooling respirator of the water proof and dust proof of outdoor water-tight equipment; comprise valve body, protective cover, compound breath film; it is characterized in that: described compound breath film is positioned at the middle groove of valve seat end end face of described valve body; and directly be injection molded into one with described valve body; described protective cover is withheld the valve seat end end face top at described valve body; and form a plurality of circumferentially uniform air holes; the thread section of described valve body is threaded with the housing of outdoor water-tight equipment, offers through hole between described groove and the described thread section end face.

2. according to the ventilative cooling respirator of water proof and dust proof of the described outdoor water-tight equipment of claim 1, it is characterized in that: described valve body is an integrated through injection molding forming type structure.

3. according to the ventilative cooling respirator of the water proof and dust proof of the described outdoor water-tight equipment of claim 1; it is characterized in that: the circumferential outer rim of the valve seat end end face of described valve body and described protective cover is corresponding uniform a plurality of axial buckle lug bosses respectively; both are by the combination of described a plurality of axial buckle lug boss buckle, and form a plurality of circumferentially uniform air holes.

4. according to the ventilative cooling respirator of water proof and dust proof of the described outdoor water-tight equipment of claim 1, it is characterized in that: the axle journal place of the thread section of described valve body also is provided with concave ring groove the O RunddichtringO is installed, and the described concave ring groove degree of depth is 1/2 of an O RunddichtringO.

5. according to the ventilative cooling respirator of water proof and dust proof of the described outdoor water-tight equipment of claim 4, it is characterized in that: described O RunddichtringO is an O type silica gel sealing ring.

6. according to the ventilative cooling respirator of the water proof and dust proof of the described outdoor water-tight equipment of claim 1, it is characterized in that: described compound breath film is the water proof and dust proof compound breath film, the flux of described water proof and dust proof compound breath film and withstand voltage temperature rise speed decision according to clear space volume and light fixture in the described outdoor water-tight equipment.

7. according to the ventilative cooling respirator of water proof and dust proof of the described outdoor water-tight equipment of claim 6, it is characterized in that: described water proof and dust proof compound breath film adopts the waterproof ventilative material based on EPTFE.

8. according to the ventilative cooling respirator of water proof and dust proof of each described outdoor water-tight equipment of claim 1-7, it is characterized in that: described outdoor water-tight equipment is the outdoor cabinet of electronics RRU.

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