Waterproof ventilation valve

Abstract

The waterproof ventilation valve comprises a valve body, a threaded rod is coaxially arranged on the end face of the valve body, a groove is formed in the end face, close to the threaded rod, of the valve body, the groove and the threaded rod are coaxially arranged, the valve body is provided with a first sealing ring located in the groove, and the depth of the groove is smaller than the thickness of the first sealing ring. The ventilation valve has the effect of facilitating installation of the ventilation valve.

Description

Technical Field

[0001] The present application relates to the technical field of air-permeable valves, and in particular to a waterproof air-permeable valve. Background Art

[0002] The waterproof breathable valve is a device that can achieve both breathable and waterproof effects. It is mainly composed of four parts: a metal valve body, a stainless steel filter, a breathable membrane, and a conductive sealing ring. The metal valve body is made of stainless steel (grade 316L) and is formed by turning and milling. Its service life has been verified by the market to be more than 20 years. The stainless steel filter protects the waterproof breathable membrane; the conductive sealing ring is a vulcanized rubber product, which mainly plays a waterproof role. It can softly contact the metal valve body and the metal shell when they are installed, and play a waterproof role. The selected conductive sealing ring can ensure the conductive continuity of the metal shell and the metal valve body, and can also play an electromagnetic compatibility role.

[0003] The waterproof breathable membrane is made of expanded polytetrafluoroethylene (ePTEF) with nano-hydrophobic treatment, and is formed by expanded polytetrafluoroethylene (ePTEF) + 3M glue + release PET (release paper). The micropore diameter of the ePTEF membrane is between 0.1-10μm, while the gas molecule is only about 0.0004μm. The pore size of the EPTFE membrane is 250-25000 times larger than the gas diameter, so the gas can pass smoothly. The diameter of drizzle is 400μm, which is 40-4000 times larger than the micropore diameter of the film. In addition, since the surface energy of the EPTFE film material is very low and the contact angle is 135.6°, due to the surface tension (water molecules pull each other), water vapor condenses into small water droplets to form larger water droplets on the surface of the EPTFE membrane, which can effectively prevent liquid water wetting and capillary penetration, so it has good waterproof and breathable properties.

[0004] A sealing ring is provided at the abutting surface of the existing air valve. During installation, the sealing ring is located between the end face of the air valve and the mounting surface to improve the sealing performance. However, during the installation process, it is necessary to control the torque at the threaded connection of the air valve. When the torque is too large, it is easy to cause excessive compression of the sealing ring, causing the sealing ring to lose its sealing effect or reduce the service life of the sealing ring. When the torque is too small, it is easy to cause improper installation and the sealing performance does not meet the standard. Utility Model Content

[0005] In order to facilitate the installation of the breathable valve, the present application provides a waterproof breathable valve.

[0006] The waterproof breathable valve provided in this application adopts the following technical solution:

[0007] A waterproof breathable valve comprises a valve body, the end face of the valve body is coaxially provided with a threaded rod, the end face of the valve body close to the threaded rod is provided with a groove, the groove is coaxially arranged with the threaded rod, the valve body is provided with a first sealing ring located in the groove, and the depth of the groove is less than the thickness of the first sealing ring.

[0008] By adopting the above technical solution, a groove is opened on the valve body, and the groove depth is calculated according to the compression and deformation of the sealing ring. When the valve body is tightened, the end face of the valve body abuts against the installation surface, thereby controlling the compression of the sealing ring, reducing the possibility of excessive compression of the sealing ring, increasing the service life of the sealing ring, and improving stability; and there is no need to use a torque wrench, thereby improving the convenience of installation.

[0009] Optionally, the valve body is detachably connected to a mounting ring, and the mounting ring and the valve body form a groove for mounting the first sealing ring.

[0010] By adopting the above technical solution, a mounting ring is detachably connected to the valve body, so that the groove is formed by the side wall of the mounting ring and the side wall of the valve body, so as to facilitate the processing of the groove and improve the convenience of the groove processing production.

[0011] Optionally, a first wedge-shaped surface is provided around one end of the valve body close to the threaded rod, and a second wedge-shaped surface matching the first wedge-shaped surface is provided on the inner ring surface of the mounting ring close to the valve body, and the diameter of the first wedge-shaped surface gradually decreases from the side away from the threaded rod to the side close to the threaded rod.

[0012] By adopting the above technical solution, when installing the mounting ring, the mounting ring needs to be positioned. When installing the mounting ring, the mounting ring is sleeved on the valve body so that the first wedge surface abuts against the second wedge surface, thereby positioning the mounting ring, and the positioning is convenient.

[0013] Optionally, a through hole is formed on the side of the mounting ring, a threaded hole is formed on the first wedge-shaped surface, and a threaded fastener is provided on the mounting ring. The threaded fastener is passed through the through hole and threadedly connected to the threaded hole.

[0014] By adopting the above technical solution, after the mounting ring is sleeved on the valve body, a threaded fastener is passed through the mounting ring, and then the threaded fastener is threadedly connected to the threaded hole, so that the mounting ring can be fixed, so that a groove is formed between the mounting ring and the valve body for the first sealing ring to be installed.

[0015] Optionally, a first annular groove is formed on the side of the valve body, the valve body is provided with a second sealing ring located in the first annular groove, and the inner ring surface of the mounting ring is provided with a second annular groove for clamping the second sealing ring.

[0016] By adopting the above technical solution, a second sealing ring is further arranged on the valve body, thereby further ensuring the safety of the valve body.

[0017] In summary, the utility model has the following beneficial effects:

[0018] 1. A groove is opened on the valve body. The depth of the groove is calculated according to the compression and deformation of the sealing ring. When the valve body is tightened, the end face of the valve body abuts against the mounting surface, thereby controlling the compression of the sealing ring, reducing the possibility of excessive compression of the sealing ring, increasing the service life of the sealing ring, and making it more stable. No torque wrench is required, which improves the convenience of installation.

[0019] 2. A mounting ring is detachably connected to the valve body, so that the groove is formed by the side wall of the mounting ring and the side wall of the valve body, so as to facilitate the processing of the groove and improve the convenience of the groove processing and production. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of Example 1;

[0021] Figure 2 It is a structural schematic diagram of Example 2.

[0022] In the figure, 1, valve body; 11, groove; 12, threaded rod; 13, threaded hole; 14, first annular groove; 15, second sealing ring; 2, first sealing ring; 3, mounting ring; 31, through hole; 32, threaded fastener; 33, second annular groove. DETAILED DESCRIPTION

[0023] The following is combined with Figure 1-2 This application is described in further detail.

[0024] Embodiment 1:

[0025] Embodiment 1 discloses a waterproof breathable valve, referring to Figure 1 , comprising a valve body 1, the end face of the valve body 1 is coaxially fixedly connected with a threaded rod 12, and the threaded rod 12 is used to be fixed to the equipment. The end face of the valve body 1 close to the threaded rod 12 is provided with a groove 11, and the groove 11 is coaxially arranged with the threaded rod 12. The valve body 1 is provided with a first sealing ring 2 located in the groove 11, and the depth of the groove 11 is less than the thickness of the first sealing ring 2.

[0026] The implementation principle of Example 1 of the present application is as follows: a groove 11 is opened on the valve body 1, and the groove depth of the groove 11 is calculated based on the compression and deformation of the first sealing ring 2. When the valve body 1 is tightened, the end face of the valve body 1 abuts against the mounting surface, thereby controlling the compression of the first sealing ring 2, reducing the possibility of excessive compression of the first sealing ring 2, increasing the service life of the first sealing ring 2, and improving stability; and there is no need to use a torque wrench, thereby improving the convenience of installation.

[0027] Embodiment 2:

[0028] The difference between Example 2 and Example 1 is that, referring to Figure 2 The valve body 1 is detachably connected with a mounting ring 3, and the inner ring surface of the mounting ring 3 and the valve body 1 form a groove 11 for mounting the first sealing ring 2. The groove 11 is formed by the side wall of the mounting ring 3 and the side wall of the valve body 1, so as to facilitate the processing of the groove 11 and improve the convenience of processing and production of the groove 11.

[0029] Reference Figure 2 The valve body 1 is provided with a first wedge-shaped surface around one end close to the threaded rod 12, and the inner ring surface of the mounting ring 3 close to the valve body 1 is provided with a second wedge-shaped surface adapted to the first wedge-shaped surface, and the diameter of the first wedge-shaped surface gradually decreases from the side away from the threaded rod 12 to the side close to the threaded rod 12. When the mounting ring 3 is installed, the first wedge-shaped surface abuts against the second wedge-shaped surface, so that the mounting ring 3 can be positioned, and the positioning is convenient.

[0030] Reference Figure 2 The side of the mounting ring 3 is provided with a through hole 31, and the first wedge-shaped surface is provided with a threaded hole 13. When the first wedge-shaped surface abuts against the second wedge-shaped surface, the mounting ring 3 can be rotated so that the through hole 31 and the threaded hole 13 are coaxially arranged. The mounting ring 3 is provided with a threaded fastener 32, which is penetrated through the through hole 31 and threadedly connected to the threaded hole 13. After the mounting ring 3 is sleeved on the valve body 1, the threaded fastener 32 is penetrated through the mounting ring 3, and then the threaded fastener 32 is threadedly connected to the threaded hole 13, so that the mounting ring 3 can be fixed, so that a groove 11 is formed between the mounting ring 3 and the valve body 1 for the first sealing ring 2 to be installed.

[0031] Reference Figure 2 A first annular groove 14 is formed on the side of the valve body 1 , and the valve body 1 is provided with a second sealing ring 15 located in the first annular groove 14 . The inner ring surface of the mounting ring 3 is provided with a second annular groove 33 for clamping the second sealing ring 15 .

[0032] The implementation principle of Example 2 is as follows: a mounting ring 3 is detachably connected to the valve body 1, so that the groove 11 is formed by the side wall of the mounting ring 3 and the side wall of the valve body 1, so as to facilitate the processing of the groove 11 and improve the convenience of processing and production of the groove 11.

[0033] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A waterproof breathable valve, characterized in that: The valve body (1) comprises a valve body (1), the end surface of the valve body (1) being coaxially provided with a threaded rod (12), the end surface of the valve body (1) being close to the threaded rod (12) being provided with a groove (11), the groove (11) being coaxially provided with the threaded rod (12), the valve body (1) being provided with a first sealing ring (2) located in the groove (11), the depth of the groove (11) being less than the thickness of the first sealing ring (2).

2. A waterproof breathable valve according to claim 1, characterized in that: The valve body (1) is detachably connected to a mounting ring (3), and the mounting ring (3) and the valve body (1) form a groove (11) for mounting the first sealing ring (2).

3. A waterproof breathable valve according to claim 2, characterized in that; A first wedge-shaped surface is formed around one end of the valve body (1) close to the threaded rod (12), and a second wedge-shaped surface matching the first wedge-shaped surface is formed on the inner ring surface of the mounting ring (3) close to the valve body (1), wherein the diameter of the first wedge-shaped surface gradually decreases from the side away from the threaded rod (12) to the side close to the threaded rod (12).

4. A waterproof breathable valve according to claim 3, characterized in that: A through hole (31) is formed on the side surface of the mounting ring (3), a threaded hole (13) is formed on the first wedge-shaped surface, and a threaded fastener (32) is provided on the mounting ring (3). The threaded fastener (32) is penetrated through the through hole (31) and is threadedly connected to the threaded hole (13).

5. A waterproof breathable valve according to claim 2, characterized in that: A first annular groove (14) is provided on the side surface of the valve body (1), the valve body (1) is provided with a second sealing ring (15) located in the first annular groove (14), and the inner ring surface of the mounting ring (3) is provided with a second annular groove (33) for clamping the second sealing ring (15).

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