Upper cover structure and waterproof ventilation valve with silt prevention function

Abstract

The utility model discloses an upper cover structure and a waterproof ventilation valve with a silt-proof function, the upper cover structure comprises an upper cover main body, and the peripheral edge of the lower surface of the upper cover main body is provided with a first step higher than the lower surface of the upper cover main body; the second step is higher than the lower surface of the upper cover main body and forms a concentric structure with the first step; a plurality of ventilation through holes are formed in the surface wall of the second step. In the using process, gas enters from the lower end of the exhaust port of the valve body, passes through the sealing film paper, then is exhausted from the sealing position where the first step is located after passing through the ventilation through hole in the second step. According to the technical scheme, silt is effectively prevented from entering the valve body through the special structural design, and therefore the waterproof and breathable functions of the breathable valve are not affected.

Description

Technical Field

[0001] This utility model relates to the field of waterproof and breathable valves, and in particular to a top cover structure and a waterproof and breathable valve with anti-mud and sand function. Background Technology

[0002] Currently available waterproof and breathable valves can prevent dust, water, particles, and other substances from entering the cavity, but they are insufficient in protecting against mud and sand in environments where there is a risk of intrusion. When mud and sand enter the valve, they can clog the vents or cover the membrane paper, affecting the breathability. Utility Model Content

[0003] To overcome the shortcomings of the prior art, this utility model provides a top cover structure and a waterproof and breathable valve with anti-mud and sand function. The special structural design effectively prevents mud and sand from entering the valve body, thus not affecting the waterproof and breathable function of the breathable valve.

[0004] A cover structure includes a cover body, the peripheral edge of the lower surface of the cover body having a first step higher than the lower surface of the cover body, and a second step higher than the lower surface of the cover body and forming a co-center structure with the first step; a plurality of ventilation holes are provided on the surface wall of the second step.

[0005] Preferably, both the first step and the second step are circular.

[0006] Preferably, the plurality of ventilation holes are evenly spaced along the surface wall of the second step.

[0007] Preferably, the height of the second step is higher than the height of the first step.

[0008] A waterproof and breathable valve with mud and sand prevention function includes a valve body, a top cover, a gasket, a sealing membrane paper, and a sealing ring; wherein the top cover adopts the top cover structure as described above;

[0009] The upper end of the valve body is provided with the sealing membrane, the gasket, and the upper cover in sequence; the sealing ring is provided at the lower end of the valve body; the first step is used to surround the exhaust port of the valve body, the gasket, and the sealing membrane.

[0010] Preferably, the gasket is a Teflon gasket.

[0011] Preferably, the sealing ring is a non-circular sealing ring.

[0012] Preferably, the valve body is provided with multiple longitudinal mounting holes.

[0013] The cover structure and waterproof and breathable valve with anti-mud and sand function provided by this utility model have a first step on the cover for fastening the raised edge of the valve body, which can effectively prevent mud, sand and gravel from entering the valve body and avoid affecting the waterproof and breathable function; the second step on the cover is provided with multiple straight breathable holes, which can effectively prevent water from remaining and causing water seal, and avoid the product's breathability performance failure; in addition, the valve body is sealed with Teflon gaskets, making the waterproof performance more stable.

[0014] Compared with the prior art, the technical solution of this utility model can maintain the pressure balance inside and outside the cavity of the breathable valve, while preventing substances such as mud, dust, water, and particles from entering the cavity. It can still play a waterproof and breathable function, especially in the presence of mud and sand. Attached Figure Description

[0015] Figure 1 This is an exploded view of the waterproof and breathable valve with anti-mud and sand function in the embodiment of this utility model;

[0016] Figure 2 This is a bottom view of the waterproof and breathable valve with anti-mud and sand function in an embodiment of this utility model;

[0017] Figure 3 This is a cross-sectional view of a waterproof and breathable valve with anti-mud and sand function in an embodiment of this utility model;

[0018] Figure 4 This is a schematic diagram of the exhaust of a waterproof and breathable valve with anti-mud and sand function in an embodiment of this utility model;

[0019] The markings in the accompanying drawings are as follows:

[0020] 1. Valve body; 2. Top cover; 21. First step; 22. Second step; 23. Vent hole; 3. Gasket; 4. Sealing membrane paper; 5. Sealing ring; 6. Mounting hole; 7. Exhaust port. Detailed Implementation

[0021] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0022] A top cover structure and a waterproof and breathable valve with mud and sand prevention function are provided, such as Figures 1 to 4As shown, the upper cover structure corresponds to the upper cover 2, which is applied to the waterproof and breathable valve and includes an upper cover body. The periphery of the lower surface of the upper cover body has a first step 21 that is higher than the lower surface of the upper cover body, and a second step 22 that is higher than the lower surface of the upper cover body and forms a co-center structure with the first step. Multiple breathable holes 23 are provided on the surface wall of the second step.

[0023] The first step matches the raised edge at the upper end of the valve body of the waterproof and breathable valve, and is used to surround the vent 7, gasket, and sealing membrane paper of the valve body, thus preventing mud, sand, and gravel from entering. The vent holes on the second step allow any remaining moisture to escape in a timely manner.

[0024] Specifically, the first step is arranged around the lower surface edge of the main body of the upper cover, forming a closed loop. Preferably, the first step is annular. The second step forms a concentric structure with the first step; when the first step is annular, the second step forms a concentric circle with it, and the diameter of the second step is smaller than the diameter of the first step. Understandably, the shapes of the first and second steps are not limited to annular; they can also be rectangular or other polygonal shapes.

[0025] Furthermore, the number of vent holes can be flexibly set; preferably, multiple vent holes are evenly spaced along the surface wall of the second step to form a uniform exhaust passage.

[0026] Furthermore, the height of the second step is higher than that of the first step to accommodate the shape of the vent valve.

[0027] A waterproof and breathable valve with anti-mud and sand function includes a valve body 1, a top cover 2, a gasket 3, a sealing membrane 4, and a sealing ring 5; wherein, the upper end of the valve body is provided with the sealing membrane, gasket, and top cover in sequence; the sealing ring is provided at the lower end of the valve body; the first step is used to surround the exhaust port of the valve body, the gasket, and the sealing membrane.

[0028] Furthermore, the gasket is a Teflon gasket, but not limited to this, which can make the waterproof performance more stable.

[0029] Furthermore, the sealing ring is a special-shaped sealing ring that matches the structure of the valve body.

[0030] Furthermore, the valve body is provided with multiple longitudinal mounting holes 6 for easy installation.

[0031] Specifically, in one implementation, a Teflon gasket and a top cover are used to press together to fix and seal the sealing film paper; at the same time, the valve body is installed from the inside out through four internal mounting holes, and a special-shaped sealing ring is used to seal from the bottom of the valve body.

[0032] During use, the exhaust method is as follows: Figure 4As shown, gas enters from the lower end of the valve body's exhaust port, passes through the sealing membrane, exits through the vent hole on the second step, and then exits from the seal at the first step. This structure maintains its waterproof and breathable function, especially in environments with mud and sand.

[0033] The above is a description of the cover structure and the waterproof and breathable valve with anti-mud and sand function of this utility model, which is used to help understand this utility model. However, the implementation of this utility model is not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the principle of this utility model shall be considered as equivalent substitutions and shall be included within the protection scope of this utility model.

Claims

1. A top cover structure, characterized in that, The device includes an upper cover body, the lower surface of which has a peripheral edge with a first step that is higher than the lower surface of the upper cover body, and a second step that is higher than the lower surface of the upper cover body and forms a co-center structure with the first step; a plurality of ventilation holes are provided on the surface wall of the second step.

2. The upper cover structure as described in claim 1, characterized in that, Both the first step and the second step are circular.

3. The upper cover structure as described in claim 1, characterized in that, The plurality of ventilation holes are evenly spaced along the surface wall of the second step.

4. The cover structure as described in any one of claims 1 to 3, characterized in that, The height of the second step is higher than the height of the first step.

5. A waterproof and breathable valve with mud and sand prevention function, characterized in that, It includes a valve body, a top cover, a gasket, a sealing membrane, and a sealing ring; wherein the top cover adopts the top cover structure as described in any one of claims 1 to 4; The upper end of the valve body is provided with the sealing membrane, the gasket, and the upper cover in sequence; the sealing ring is provided at the lower end of the valve body; the first step is used to surround the exhaust port of the valve body, the gasket, and the sealing membrane.

6. The waterproof and breathable valve with anti-mud and sand function as described in claim 5, characterized in that, The gasket is a Teflon gasket.

7. The waterproof and breathable valve with anti-mud and sand function as described in claim 5, characterized in that, The sealing ring is a non-circular sealing ring.

8. The waterproof and breathable valve with anti-mud and sand function as described in any one of claims 5 to 7, characterized in that, The valve body is provided with multiple longitudinal mounting holes.

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