Bidirectional waterproof ventilation valve

Abstract

The bidirectional waterproof ventilation valve comprises a valve cover, a valve body, an exhaust pressing plate and an air inlet pressing plate, an exhaust cavity is formed in the upper portion of the left side of the valve body, an exhaust hole is formed in the middle of the valve body, an exhaust channel is formed in the lower portion of the valve body, and the exhaust cavity is communicated with the exhaust hole and the exhaust channel. An air inlet channel is formed in the upper portion of the right side of the valve body, an air inlet cavity is formed in the lower portion of the right side of the valve body, the air inlet channel is communicated with the air inlet cavity, a first sealing pressing plate is arranged at the bottom in the air exhaust cavity, an air exhaust pressing plate is arranged above the first sealing pressing plate, and an air exhaust spring is arranged between the air exhaust pressing plate and the first sealing pressing plate. An air inlet pressing plate is arranged below the second sealing pressing plate, an air inlet spring is arranged between the air inlet pressing plate and the second sealing pressing plate, and a waterproof breathable film is fixedly connected to the valve body. The waterproof and oil-proof capabilities of the two-way waterproof breathable valve can be enhanced, the service life of the waterproof breathable film is prolonged, and the two-way waterproof breathable valve is reasonable in structural design, convenient to use and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation valves, in particular to a two-way waterproof ventilation valve. Background Art

[0002] In the existing two-way waterproof ventilation valve, the waterproof and breathable film is directly connected to the reduction gearbox. During the operation of the vehicle, oil and gas will be generated as the temperature rises. Since the air inlet end and the air outlet end of the two-way waterproof ventilation valve are in one cavity, and the waterproof and breathable film is also arranged in this cavity, the probability of oil and gas seeping onto the waterproof and breathable film is relatively high, which easily causes the waterproof and breathable film to be blocked, resulting in the failure of the air inlet end of the two-way waterproof ventilation valve. There are also problems in the existing two-way waterproof ventilation valves on the market, such as gear oil seeping out from the two-way waterproof ventilation valve and gear oil splashing onto the waterproof and breathable film of the two-way waterproof ventilation valve, which in turn leads to the failure of the two-way waterproof ventilation valve due to blockage, and problems such as internal wear iron filings in the gearbox damaging the two-way waterproof ventilation valve. Content of the Utility Model

[0003] The purpose of the utility model is to provide a two-way waterproof ventilation valve to solve the problem in the prior art that when oil and gas are discharged from the exhaust cavity of the two-way ventilation valve, the oil and gas seep into the waterproof and breathable film at the air inlet end of the two-way waterproof ventilation valve, causing the waterproof and breathable film at the air inlet end to be infiltrated by the oil and gas, resulting in the blockage of the waterproof and breathable film and the failure of the two-way waterproof ventilation valve when admitting air.

[0004] To solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A two-way waterproof ventilation valve of the utility model includes a valve cover, a valve body, an exhaust pressure plate and an air inlet pressure plate. The valve cover covers the valve body. An exhaust cavity is arranged at the upper left part of the valve body, an exhaust hole is opened in the middle part, and an exhaust channel is arranged at the lower part. The exhaust cavity is respectively communicated with the exhaust hole and the exhaust channel. An air inlet channel is arranged at the upper right part of the valve body, and an air inlet cavity is arranged at the lower right part. The air inlet channel is communicated with the air inlet cavity. A first sealing pressure plate is arranged at the bottom of the exhaust cavity. A sealing gasket is assembled at the bottom of the first sealing pressure plate. The exhaust pressure plate is arranged above the first sealing pressure plate. An exhaust spring is arranged between the exhaust pressure plate and the first sealing pressure plate. The exhaust spring is sleeved on the first sealing pressure plate. A second sealing pressure plate is arranged at the top of the air inlet cavity. A sealing gasket is assembled at the top of the second sealing pressure plate. The air inlet pressure plate is arranged below the second sealing pressure plate. An air inlet spring is arranged between the air inlet pressure plate and the second sealing pressure plate. The air inlet spring is sleeved on the second sealing pressure plate. A ventilation hole is opened in the middle of the air inlet pressure plate. Both the exhaust pressure plate and the air inlet pressure plate are fixedly connected to the valve body. A waterproof and breathable film is fixedly connected to the valve body. The waterproof and breathable film is arranged corresponding to the air inlet channel.

[0006] Further, the waterproof and breathable membrane is fixedly connected to the top of the intake passage.

[0007] Furthermore, the waterproof and breathable membrane is fixed to the valve body by ultrasonic welding.

[0008] Further, the valve cover is connected to the valve body by snap connection.

[0009] Further, the exhaust pressure plate and the intake pressure plate are respectively fixed to the valve body by ultrasonic welding.

[0010] Further, the cross-section of the gasket is in the shape of a Chinese character 'tu'.

[0011] Further, a plurality of intake holes are formed in the side wall of the valve cover.

[0012] Compared with the prior art, the beneficial technical effects of the present utility model are as follows:

[0013] The two-way waterproof and breathable valve of the present utility model is provided with a completely separated and non-communication intake cavity and exhaust cavity. When the product exhausts, it does not pass through the intake end of the product, which can effectively avoid the oil and gas infiltrating into the waterproof and breathable membrane at the intake end due to temperature influence, resulting in the blockage of the waterproof and breathable membrane at the intake end and the situation that the two-way ventilation valve cannot intake normally. At the same time, it can enhance the waterproof and oil-proof capabilities of the two-way waterproof and breathable valve, extend the service life of the waterproof and breathable membrane in the two-way waterproof and breathable valve, and can be directly installed on various devices that may generate oil and gas for use, expanding the application range of the two-way waterproof and breathable valve. The structure of the present utility model is reasonably designed, easy to use, and has strong practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. 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 the front view structural schematic diagram of the two-way waterproof and breathable valve of the present utility model;

[0016] Figure 2 It is the three-dimensional structural schematic diagram of the two-way waterproof and breathable valve of the present utility model;

[0017] Figure 3 It is the internal structural schematic diagram of the two-way waterproof and breathable valve of the present utility model;

[0018] Figure 4 It is the schematic diagram of the exhaust route and intake route of the two-way waterproof and breathable valve of the present utility model;

[0019] Figure 5 This is a schematic exploded view of the two-way waterproof and breathable valve of the present utility model.

[0020] Description of the reference numerals in the drawings: 1. Valve cover; 2. Waterproof and breathable membrane; 3. Exhaust pressure plate; 4. Exhaust spring; 51. First sealing pressure plate; 52. Second sealing pressure plate; 6. Sealing gasket; 7. Valve body; 8. Intake spring; 9. Intake pressure plate; 10. Exhaust hole. Detailed implementation manners

[0021] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0022] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and 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 to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more unless otherwise specifically defined.

[0023] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between 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 circumstances.

[0024] The technical solutions provided by the embodiments of the present utility model will be described in detail below with reference to the drawings.

[0025] As Figures 1 to 5As shown in the figure, the two-way waterproof and breathable valve of the embodiment of the present utility model includes a valve cover 1, a valve body 7, an exhaust pressure plate 3 and an intake pressure plate 9. The valve cover 1 covers the valve body 7. Preferably, the valve cover 1 is connected to the valve body 7 by a buckle, and a plurality of intake holes are provided on the side wall of the valve cover 1. An exhaust cavity is provided in the upper left part of the valve body 7, an exhaust hole 10 is provided in the middle, and an exhaust channel is provided in the lower part. The exhaust cavity is respectively communicated with the exhaust hole 10 and the exhaust channel. An intake channel is provided in the upper right part of the valve body 7, and an intake cavity is provided in the lower right part. The intake channel is communicated with the intake cavity.

[0026] Specifically, as Figure 3 , Figure 5 shown, a first sealing pressure plate 51 is provided at the bottom of the exhaust cavity. A sealing gasket 6 is assembled at the bottom of the first sealing pressure plate 51. An exhaust pressure plate 3 is provided above the first sealing pressure plate 51. An exhaust spring 4 is provided between the exhaust pressure plate 3 and the first sealing pressure plate 51. The exhaust spring 4 is sleeved on the first sealing pressure plate 51. A second sealing pressure plate 52 is provided at the top of the intake cavity. A sealing gasket 6 is assembled at the top of the second sealing pressure plate 52. An intake pressure plate 9 is provided below the second sealing pressure plate 52. An intake spring 8 is provided between the intake pressure plate 9 and the second sealing pressure plate 52. The intake spring 8 is sleeved on the second sealing pressure plate 52. A ventilation hole is provided in the middle of the intake pressure plate 9. Both the exhaust pressure plate 3 and the intake pressure plate 9 are fixedly connected to the valve body 7. A waterproof and breathable membrane 2 is fixedly connected to the valve body 7. The waterproof and breathable membrane 2 is correspondingly arranged with the intake channel.

[0027] Among them, the waterproof and breathable membrane 2 is fixedly connected to the top of the intake channel, and the waterproof and breathable membrane 2 is fixed to the valve body 7 by ultrasonic welding.

[0028] Moreover, the exhaust pressure plate 3 and the intake pressure plate 9 are respectively fixed to the valve body 7 by ultrasonic welding.

[0029] Preferably, the cross-section of the sealing gasket 6 is in the shape of a Chinese character "tu".

[0030] When installing the two-way waterproof and breathable valve of this embodiment, first, the sealing gasket 6 is respectively assembled onto the first sealing pressure plate 51 and the second sealing pressure plate 52 for manual clearance assembly; then, the waterproof and breathable membrane 2 is ultrasonically welded to the valve body 7. The assembled first sealing pressure plate 51 is placed into the exhaust cavity of the valve body 7. The exhaust spring 4 is installed into the exhaust cavity and sleeved on the first sealing pressure plate 51. Then, the exhaust pressure plate 3 is installed into the exhaust cavity, and the exhaust pressure plate 3 is welded to the valve body 7 by ultrasonic welding; the assembled second sealing pressure plate 52 is placed into the intake cavity of the valve body 7. The intake spring 8 is installed into the intake cavity and sleeved on the second sealing pressure plate 52. The intake pressure plate 9 is installed into the intake cavity, and the intake pressure plate 9 is welded to the valve body 7 by ultrasonic welding. Finally, the valve cover 1 is installed on the assembled valve body 7, and the two are fixed by a buckle, thus completing the entire installation process.

[0031] When the two-way waterproof and breathable valve of this embodiment is in use, as Figure 4 shown, the dotted line on the left is the exhaust route. The gas enters the valve body 7 through the exhaust passage, and then is discharged from the exhaust hole 10 at the bottom of the exhaust cavity; the dotted line on the right is the intake route. The gas enters the valve cover 1 through the intake hole, then enters the valve body 7 through the waterproof and breathable membrane 2, and is discharged from the vent hole after passing through the intake passage and the intake cavity in sequence.

[0032] By setting an intake cavity and an exhaust cavity that are completely separated and do not communicate with each other, the two-way waterproof and breathable valve of the present utility model does not pass through the intake end of the product when exhausting, which can effectively avoid the infiltration of oil and gas generated by temperature influence onto the waterproof and breathable membrane at the intake end, causing blockage of the waterproof and breathable membrane at the intake end and resulting in the situation that the two-way ventilation valve cannot intake normally. At the same time, it can enhance the waterproof and oil-proof capabilities of the two-way waterproof and breathable valve, extend the service life of the waterproof and breathable membrane in the two-way waterproof and breathable valve, and can be directly installed on various devices that may generate oil and gas for use, expanding the application range of the two-way waterproof and breathable valve.

[0033] The embodiments described above are only used to describe the preferred mode of the present utility model, and do not limit the scope of the present utility model. Without departing from the design spirit of the present utility model, various deformations and improvements made by those of ordinary skill in the art to the technical solution of the present utility model shall fall within the protection scope determined by the claims of the present utility model.

Claims

1. A two-way waterproof breathable valve, characterized in that: It includes a valve cover, a valve body, an exhaust pressure plate and an intake pressure plate. The valve cover is closed on the valve body. An exhaust cavity is arranged at the upper part on the left side of the valve body, an exhaust hole is opened in the middle part, and an exhaust passage is arranged at the lower part. The exhaust cavity is respectively communicated with the exhaust hole and the exhaust passage. An intake passage is arranged at the upper part on the right side of the valve body, and an intake cavity is arranged at the lower part on the right side. The intake passage is communicated with the intake cavity. A first sealing pressure plate is arranged at the bottom inside the exhaust cavity, a sealing gasket is assembled at the bottom of the first sealing pressure plate, the exhaust pressure plate is arranged above the first sealing pressure plate, an exhaust spring is arranged between the exhaust pressure plate and the first sealing pressure plate, and the exhaust spring is sleeved on the first sealing pressure plate. A second sealing pressure plate is arranged at the top inside the intake cavity, a sealing gasket is assembled at the top of the second sealing pressure plate, the intake pressure plate is arranged below the second sealing pressure plate, an intake spring is arranged between the intake pressure plate and the second sealing pressure plate, and the intake spring is sleeved on the second sealing pressure plate. A ventilation hole is opened in the middle part of the intake pressure plate. Both the exhaust pressure plate and the intake pressure plate are fixedly connected to the valve body. A waterproof and breathable film is fixedly connected to the valve body, and the waterproof and breathable film is correspondingly arranged with the intake passage.

2. A two-way waterproof breathable valve according to claim 1, characterized in that: The waterproof and breathable film is fixedly connected to the top of the intake passage.

3. A two-way waterproof breathable valve according to claim 2, characterized in that: The waterproof and breathable film is fixed to the valve body by ultrasonic welding.

4. A two-way waterproof breathable valve according to claim 1, characterized in that: The valve cover and the valve body are connected by a buckle.

5. A two-way waterproof breathable valve according to claim 1, characterized in that: The exhaust pressure plate and the intake pressure plate are respectively fixed to the valve body by ultrasonic welding.

6. A two-way waterproof breathable valve according to claim 1, characterized in that: The cross section of the sealing gasket is in the shape of a Chinese character 'tu'.

7. A two-way waterproof breathable valve according to any one of claims 1 to 6, characterized in that: A plurality of intake holes are opened on the side wall of the valve cover.

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