Ventilation valve

Abstract

The utility model provides a breather valve which comprises a valve body, a breather channel allowing gas to enter the valve body and a valve cover with a downward opening, the valve cover is arranged above the valve body in a covering mode, a breather film is arranged in the valve body, an extension ring is arranged at the upper end of the valve body, a breather groove is formed in the extension ring, and the valve cover is provided with a through hole. A bent channel used for reducing dust entering the extension ring is arranged at the position, opposite to the ventilation groove, of the valve deck, the ventilation film is arranged between the ventilation channel and the ventilation groove, the extension ring is wrapped with the valve deck, and an exhaust cavity used for exhausting gas outwards is formed between the extension ring and the bent channel. According to the ventilation valve, the defects that in the prior art, an exhaust hole makes direct contact with the outside, so that water, oil, dust and the like of the outside easily and directly enter a ventilation film from the exhaust hole, and then the ventilation film is blocked are overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation valves, and particularly relates to a ventilation valve. Background Art

[0002] A ventilation valve is formed by combining a breathable film through injection molding, ultrasonic welding and other forms to form a sealed component.

[0003] In the invention patent with the patent publication number of CN105546169B, a ventilation valve for a poly-energy photovoltaic power generation module is disclosed, which includes a valve body and a valve cover installed on the valve body. The valve body has a breathable film inside, and the valve cover has an exhaust hole. However, in this mode, the exhaust hole is directly in contact with the outside world. Therefore, water, oil, dust, etc. in the outside world can easily enter the breathable film directly from the exhaust hole, thereby blocking the breathable film. Summary of the Utility Model

[0004] Therefore, the technical problem to be solved by the utility model is to overcome the defect that in the prior art, the exhaust hole is directly in contact with the outside world, so water, oil, dust, etc. in the outside world can easily enter the breathable film directly from the exhaust hole, thereby blocking the breathable film, and thus provide a ventilation valve with good waterproof and dustproof performance.

[0005] To this end, the utility model provides a ventilation valve, which includes a valve body, a breathable channel for gas to enter the valve body, and a valve cover that opens downward and covers the upper part of the valve body. A breathable film is arranged inside the valve body. An extension ring is arranged at the upper end of the valve body, and a breathable groove is arranged at the extension ring. A bending channel for reducing dust from entering the extension ring is arranged at the position of the valve cover opposite to the breathable groove. The breathable film is arranged between the breathable channel and the breathable groove. The valve cover wraps around the outside of the extension ring, and an exhaust cavity for discharging gas outward is formed between the extension ring and the bending channel. The exhaust cavity is communicated with the breathable groove.

[0006] Further: The extension ring is coaxially arranged with the valve body. The valve cover includes a cover plate and an extension block arranged along the circumferential direction of the cover plate. The exhaust cavity is located between the extension ring and the extension block.

[0007] Further: An annular groove is arranged on the outer side surface of the extension ring and is communicated with the breathable groove. An exhaust space for assisting the breathable groove to discharge gas is formed between the annular groove and the extension block.

[0008] Further: A receiving groove is arranged between the extension ring and the valve body. The breathable film is arranged in the receiving groove. A pressing ring for fixing the breathable film is further arranged above the breathable film. A through groove communicated with the breathable channel is arranged on the pressing ring.

[0009] Furthermore, an annular avoidance groove is provided between the outer side surface of the valve body and the extension ring, and the side of the extension block facing away from the cover plate extends towards the extension block.

[0010] Furthermore, a guiding inclined surface for guiding the snap ring to be snapped in is provided in the accommodating groove.

[0011] The technical solution of the present utility model has the following advantages:

[0012] 1. An air vent valve provided by the present utility model, wherein the valve cover is disposed outside the extension ring, and the bending channel wraps the extension ring. The exhaust cavity is disposed between the bending channel and the extension. Different from the prior art, the exhaust cavity is not directly exposed outside. The bending channel can block most of the water, oil and dust for the exhaust cavity, thus effectively preventing water, oil and dust from entering the exhaust cavity and blocking the breathable membrane, and greatly improving the service life of the air vent valve.

[0013] 2. An air vent valve provided by the present utility model, wherein the valve cover includes a cover plate and an extension block disposed along the circumferential direction of the cover plate. The extension block and the cover plate form a bending channel that wraps outside the extension ring. When gas enters through the breathable channel, after being filtered by the breathable membrane, the filtered gas will pass through the breathable groove, then enter the exhaust cavity, and finally be discharged to the outside. The exhaust cavity is disposed along the circumferential direction of the extension block, which can effectively improve the exhaust efficiency. Description of the Drawings

[0014] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 It is a schematic cross-sectional structure diagram of the air vent valve;

[0016] Figure 2 It is a schematic structure diagram of the air vent valve after removing the cover plate;

[0017] Figure 3 It is a schematic overall structure diagram of the air vent valve.

[0018] Description of the Reference Numerals:

[0019] 1. Valve body; 11. Annular avoidance groove; 2. Breathable channel; 3. Valve cover; 31. Cover plate; 32. Extension block; 4. Breathable membrane; 5. Extension ring; 51. Breathable groove; 52. Annular groove; 6. Exhaust cavity; 7. Accommodating groove; 8. Snap ring; 81. Through groove; 9. Guiding inclined surface. Detailed implementation mode

[0020] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative work shall fall within the scope of protection of the present utility model.

[0021] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0022] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0023] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0024] Embodiment

[0025] This embodiment provides a breathing valve, which includes a valve body 1, a breathing channel 2 for gas to enter the valve body 1, and a valve cover 3 with an opening downward and covering the upper part of the valve body 1. A breathing membrane 4 is arranged inside the valve body 1. An extension ring 5 is arranged at the upper end of the valve body 1. A breathing groove 51 is arranged at the extension ring 5. A bending channel for reducing dust from entering the extension ring 5 is arranged at the position of the valve cover 3 opposite to the breathing groove 51. The breathing membrane 4 is arranged between the breathing channel 2 and the breathing groove 51. The valve cover 3 wraps around the outside of the extension ring 5, and an exhaust cavity 6 for discharging gas outward is formed between the extension ring 5 and the bending channel. The exhaust cavity 6 is communicated with the breathing groove 51.

[0026] The above specific improvement is as follows: As Figures 1-3As shown, compared with the prior art, the valve cover 3 is disposed outside the extension ring 5, and the bent channel wraps the extension ring 5. The exhaust cavity 6 is disposed between the bent channel and the extension. The exhaust cavity 6 is not directly exposed outside as in the prior art. The bent channel can block most of the water, oil, and dust for the exhaust cavity 6, thereby effectively preventing water, oil, and dust from entering the exhaust cavity 6 and clogging the breathable membrane 4, greatly improving the service life of the breather valve. Among them, the breather valve can be made of metal materials.

[0027] Based on the above embodiments: The extension ring 5 is coaxially arranged with the valve body 1. The valve cover 3 includes a cover plate 31 and an extension block 32 arranged along the circumferential direction of the cover plate 31. The exhaust cavity 6 is located between the extension ring 5 and the extension block 32.

[0028] The above specific improvement is: As Figure 1 shown, the valve cover 3 includes a cover plate 31 and an extension block 32 arranged along the circumferential direction of the cover plate 31. The extension block 32 and the cover plate 31 form a bent channel that wraps outside the extension ring 5. When the gas enters through the breathable channel 2, after being filtered by the breathable membrane 4, the filtered gas will pass through the breathable groove 51, and then enter the exhaust cavity 6, and finally be discharged to the outside. The exhaust cavity 6 is arranged along the circumferential direction of the extension block 32, which can effectively improve the exhaust efficiency.

[0029] Based on the above embodiments: An annular groove 52 is provided on the outer side surface of the extension ring 5 and is communicated with the breathable groove 51. An exhaust space for assisting the breathable groove 51 to discharge the gas is formed between the annular groove 52 and the extension block 32.

[0030] The above specific improvement is: As Figure 1 and Figure 2 shown, through the arrangement of the annular groove 52, the gas after passing through the breathable membrane 4 will be accumulated in the extension ring 5. These gases will pass through the breathable groove 51, then reach the annular groove 52 and the exhaust cavity 6, and finally be discharged outward from the exhaust cavity 6. Through the arrangement of the annular groove 52, the gas can be accelerated to be discharged outward from the exhaust cavity 6.

[0031] Based on the above embodiments: A receiving groove 7 is provided between the extension ring 5 and the valve body 1. The breathable membrane 4 is installed in the receiving groove 7. A pressing ring 8 for fixing the breathable membrane 4 is further provided above the breathable membrane 4. A through groove 81 communicated with the breathable channel 2 is provided on the pressing ring 8.

[0032] The above specific improvement is: As Figure 1As shown, a receiving groove 7 is provided inside the extension ring 5, the breathable membrane 4 is disposed inside the receiving groove 7, and the breathable membrane 4 is pressed by a pressing ring 8. A through groove 81 is formed on the pressing ring 8 and communicated with the breathable channel 2. When gas enters from the breathable channel 2, it will pass through the through groove 81, then enter the breathable groove 51, and then be discharged outward through the exhaust cavity 6.

[0033] Based on the above embodiment: An annular avoidance groove 11 is provided between the outer side surface of the valve body 1 and the extension ring 5, and the side of the extension block 32 facing away from the cover plate 31 extends toward the extension block 32.

[0034] The above specific improvement is as follows: As Figure 1 shown, through the setting of the annular avoidance groove 11, the gas discharged from the exhaust cavity 6 will first enter the avoidance groove and then be discharged to the outside, which can reduce the contact area between the extension block 32 and the valve body 1 and facilitate the installation of the cover plate 31.

[0035] Based on the above embodiment: A guiding inclined surface 9 for guiding the pressing ring 8 to be snapped in is provided inside the receiving groove 7.

[0036] The above specific improvement is: Through the setting of the guiding inclined surface 9, the pressing ring 8 can be effectively guided to be snapped into the receiving groove 7, and a groove is provided at the lower end of the pressing ring 8. Through the setting of this groove, the contact area between the pressing ring 8 and the receiving groove 7 can be reduced, facilitating the pressing ring 8 to be snapped into the receiving groove 7.

[0037] Obviously, the above embodiments are only examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A vent valve, characterized in that: The invention comprises a valve body (1), a vent passage (2) for gas to enter the valve body (1), and a valve cover (3) which opens downward and is arranged on the top of the valve body (1); a vent film (4) is arranged inside the valve body (1); an extension ring (5) is arranged at the upper end of the valve body (1); a vent groove (51) is arranged at the extension ring (5); a bending passage for reducing dust from entering the extension ring (5) is arranged at a position of the valve cover (3) opposite to the vent groove (51); the vent film (4) is arranged between the vent passage (2) and the vent groove (51); the valve cover (3) is wrapped around the outside of the extension ring (5); and an exhaust cavity (6) for exhausting gas to the outside is formed between the extension ring (5) and the vent groove (51); the exhaust cavity (6) is connected to the vent groove (51).

2. A breathable valve according to claim 1, characterized in that: The extension ring (5) is coaxially arranged with the valve body (1); the valve cover (3) comprises a cover plate (31) and an extension block (32) arranged along the circumferential direction of the cover plate (31); and the exhaust chamber (6) is located between the extension ring (5) and the extension block (32).

3. A breathable valve according to claim 1, characterized in that: The outer side surface of the extension ring (5) is provided with an annular groove (52) which is in communication with the venting groove (51); an exhaust space is formed between the annular groove (52) and the extension stopper (32) to assist the venting groove (51) in exhausting gas.

4. A vent valve according to any one of claims 1 to 3, characterized in that: A receiving groove (7) is provided between the extension ring (5) and the valve body (1), the air permeable membrane (4) is arranged in the receiving groove (7), a pressure ring (8) for fixing the air permeable membrane (4) is also provided above the air permeable membrane (4), and a through groove (81) communicating with the air permeable channel (2) is provided on the pressure ring (8).

5. A breathable valve according to claim 2 or 3, characterized in that: An annular avoidance groove (11) is provided between the valve body (1) and the outer side surface of the extension ring (5), and the side of the extension block (32) facing away from the cover plate (31) extends towards the extension block (32).

6. A breathable valve according to claim 4, characterized in that: A guiding inclined surface (9) for guiding the pressing ring (8) to snap in is arranged in the accommodating groove (7).

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