Pre-filtering gas permeable valve

Abstract

The utility model discloses a kind of pre-filtering air permeation valves, it includes valve body, valve cover and air permeation membrane;The two ends of valve body are air permeation end and connecting end respectively, valve body is equipped with the flow-through passage passing through air permeation end and connecting end, at least two inner convex blocking pieces are formed in flow-through passage, each blocking piece is separately arranged along the axial direction of valve body, and each blocking piece is misaligned and arranged along the circumferential direction of valve body;Valve cover is connected with the air permeation end of valve body and forms air permeation passage between valve cover and valve body;Air permeation membrane is matched in the air permeation end of valve body, air permeation membrane is between valve body and valve cover and air permeation membrane separates air permeation passage and flow-through passage.The pre-filtering air permeation valve of the utility model can realize long-term reliable air permeation effect, and has the advantage of strong use reliability.

Description

Technical Field

[0001] This utility model relates to the field of valves, and in particular to a pre-filtered ventilator valve. Background Technology

[0002] Many existing electromechanical devices that contain oil (such as power supplies and gearboxes) are equipped with pre-filter vent valves. These valves allow air exchange between the inside of the device and the external environment, thus balancing the internal air pressure. At the same time, the pre-filter vent valves also prevent oil leakage from the device. Current pre-filter vent valves (see Chinese patent CN218564502U) generally include a valve body, a valve cover, a vent membrane, and a barrier cotton. The valve body has a hollow flow channel. The valve cover is connected to the valve body, and a vent channel is formed between the valve cover and the valve body. The vent membrane is installed between the valve body and the valve cover, and the vent membrane separates the flow channel from the vent channel. The barrier cotton is installed in the flow channel. Both the vent membrane and the barrier cotton have a venting function. The barrier cotton can also block oil splashed from the electromechanical device due to vibration, preventing oil from repeatedly contacting the vent membrane for a long time and forming an oil film that blocks air. Current barrier cotton generally has an oil-repellent effect to prevent the barrier cotton from blocking the flow channel. However, after long-term use, the barrier cotton will deteriorate and become soaked in oil, preventing air from passing through the barrier cotton and posing a risk of overpressure to the electromechanical device.

[0003] In view of the above problems, it is necessary to study a pre-filtered vent valve with high reliability. Utility Model Content

[0004] The purpose of this utility model is to provide a pre-filtered breathable valve with high reliability.

[0005] To achieve the above objectives, the solution of this utility model is: A pre-filter vent valve includes a valve body, a valve cover, and a vent membrane. The valve body has a vent end and a connection end at its two ends, respectively. The valve body is provided with a flow channel that passes through the vent end and the connection end. At least two inwardly protruding baffles are formed in the flow channel. Each baffle is separated along the axial direction of the valve body and is staggered along the circumference of the valve body. The valve cover is connected to the vent end of the valve body, and a vent channel is formed between the valve cover and the valve body. The vent membrane is fitted to the vent end of the valve body, and is located between the valve body and the valve cover, separating the vent channel and the flow channel.

[0006] The vent end of the valve body forms an outwardly protruding retaining edge; the vent channel is formed between the valve cover and the retaining edge.

[0007] The valve cover is provided with at least two latches that fasten the retaining edge.

[0008] The rim of the valve has a recess, and the venting channel is formed between the valve cover and the recess of the rim.

[0009] The outer side of the valve body is provided with connecting threads and a retaining edge in sequence from the connecting end to the venting end.

[0010] A sealing ring is fitted to the side of the valve body near the connection end.

[0011] The outer periphery of the valve body's retaining edge forms a hexagonal retaining surface.

[0012] The flow channel of the valve body is divided into a small orifice section and a large orifice section along the direction from the connection end to the vent end. The diameter of the large orifice section is larger than that of the small orifice section, and each baffle is set in the small orifice section.

[0013] The valve body is fitted with a support frame at the vent end, and the support frame supports the vent membrane.

[0014] The valve body and valve cover are made of plastic or metal.

[0015] With the above solution, when the pre-filter vent valve of this utility model is used, the valve body is connected to the vent of the electromechanical device, and the flow channel of the valve body is connected to the inner cavity of the electromechanical device. The vent membrane of the pre-filter vent valve of this utility model has both air-permeable and oil-blocking effects, allowing air exchange between the inside of the electromechanical device and the external environment while preventing oil leakage. The various baffles in the flow channel of the valve body are staggered circumferentially along the valve body, thus blocking oil splashed due to vibration in the electromechanical device and preventing the vent membrane from forming an oil film due to prolonged contact with splashed oil. Furthermore, the baffles in the flow channel of the valve body are spaced axially along the valve body, ensuring that the flow channel remains unobstructed and completely free from blockage.

[0016] In summary, the pre-filtered ventilator of this invention, by setting a blocking plate, can prevent the ventilator membrane from forming an oil film due to long-term contact with splashed oil, and at the same time, it can also prevent the flow channel of the valve body from being blocked. In this way, the pre-filtered ventilator of this invention can achieve a long-term reliable ventilating effect and has the advantage of high reliability in use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 .

[0018] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 .

[0019] Figure 3 Structural breakdown of this utility model Figure 1 .

[0020] Figure 4 Structural breakdown of this utility model Figure 2 .

[0021] Figure 5 A cross-sectional view of this utility model Figure 1 .

[0022] Figure 6 A cross-sectional view of this utility model Figure 2 .

[0023] Figure 7 A cross-sectional view of this utility model Figure 3 .

[0024] Figure 8 This is a schematic diagram of the valve body of this utility model.

[0025] Label Explanation: Valve body 1, vent end 101, connecting end 102, flow channel 11, small orifice section 111, large orifice section 112, baffle plate 12, retaining edge 13, recess 131, connecting thread 14, retaining edge 15, retaining surface 151, groove 152. Valve cover 2, clip 21, Breathable membrane 3, Sealing ring 4, Support frame 5, Ventilation channel S. Detailed Implementation

[0026] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0027] like Figures 1 to 8 As shown, this utility model discloses a pre-filter vent valve, which includes a valve body 1, a valve cover 2, and a vent membrane 3. The valve body 1 has a vent end 101 and a connecting end 102 at its two ends, respectively. The valve body 1 has a flow channel 11 penetrating the vent end 101 and the connecting end 102. At least two inwardly protruding blocking plates 12 are formed within the flow channel 11. Each blocking plate 12 is axially separated along the valve body 1 and is circumferentially offset along the valve body 1. The valve cover 2 is connected to the vent end 101 of the valve body 1, and a vent channel S is formed between the valve cover 2 and the valve body 1. The vent membrane 3 is fitted to the vent end 101 of the valve body 1, and is located between the valve body 1 and the valve cover 2, separating the vent channel S and the flow channel 11.

[0028] When the pre-filtered vent valve of this utility model is used, the valve body 1 is connected to the vent of the electromechanical device, and the flow channel 11 of the valve body 1 is connected to the inner cavity of the electromechanical device. In this invention, the pre-filtered ventilator valve has a breathable membrane 3 that allows for both air permeability and oil blocking, enabling air exchange between the internal and external environments of the electromechanical device and preventing oil leakage. The various blocking plates 12 within the flow channel 11 of the valve body 1 are staggered circumferentially, thus blocking oil splashed from the electromechanical device due to vibration and preventing the breathable membrane 3 from forming an oil film due to prolonged contact with splashed oil. Furthermore, the blocking plates 12 within the flow channel 11 of the valve body 1 are spaced axially along the valve body 1, ensuring that the flow channel 11 remains unobstructed. In summary, this pre-filtered ventilator valve prevents the breathable membrane 3 from forming an oil film due to prolonged contact with splashed oil and also avoids blockage of the flow channel 11 of the valve body 1. Therefore, this pre-filtered ventilator valve achieves a long-term reliable ventilating effect and has the advantage of high reliability.

[0029] In an embodiment of this utility model, the vent end 101 of the valve body 1 forms a protruding retaining edge 13, and the venting channel S is formed between the valve cover 2 and the retaining edge 13. This arrangement allows the valve cover 2 to shield the venting channel S, helping to prevent debris from falling directly into the venting channel S. The valve cover 2 may have at least two latches 21 that fasten the retaining edge 13, allowing the valve cover 2 to be connected to the valve body 1 via a latch connection. This makes the connection between the valve body 1 and the valve cover 2 simple and secure. The retaining edge 13 may have a recess 131, and the venting channel S is formed between the valve cover 2 and the recess 131 of the retaining edge 13. The shape of the venting channel S can be adjusted by adjusting the shape of the recess 131.

[0030] In this embodiment of the present invention, the outer side of the valve body 1 is provided with a connecting thread 14 and a retaining edge 15 in sequence along the direction from the connecting end 102 to the venting end 101. In this way, the valve body 1 can be conveniently connected to the electromechanical device through the threaded connection. The retaining edge 15 plays a role in limiting and protecting. A sealing ring 4 is fitted on the side of the retaining edge 15 of the valve body 1 near the connecting end 102. The sealing ring 4 can ensure the sealing of the connection between the valve body 1 and the electromechanical device. A groove 152 for the sealing ring 4 to fit can be formed on the side of the retaining edge 15 of the valve body 1 near the connecting end 102. A hexagonal baffle surface 151 can be formed on the outer periphery of the retaining edge 15, so that the valve body 1 can be rotated by a hexagonal wrench.

[0031] In an embodiment of this utility model, the flow channel 11 of the valve body 1 is divided into a small hole section 111 and a large hole section 112 along the direction from the connecting end 102 to the venting end 101. The diameter of the large hole section 112 is larger than that of the small hole section 111. The small hole section 111 has a small diameter to prevent a large amount of splashed oil from entering the flow channel 11. The large hole section 112 ensures smooth airflow and does not affect the overall venting effect due to the setting of the small hole section 111. Each baffle plate 12 is set in the small hole section 111, so that each baffle plate 12 can more effectively block the splashed oil and prevent the oil from directly impacting the venting membrane 3.

[0032] In an embodiment of this utility model, the vent end 101 of the valve body 1 may be fitted with a support frame 5. The support frame 5 supports and fixes the vent membrane 3, preventing the vent membrane 3 from deforming or shifting during use, and ensuring the stability of the vent membrane 3's air permeability and oil blocking effect.

[0033] In the embodiments of this utility model, the valve body 1 and the valve cover 2 can be made of plastic or metal. Plastic has the advantages of being lightweight, low-cost, and corrosion-resistant; while metal has the advantages of being high-strength, high-temperature resistant, and wear-resistant. The specific materials of the valve body 1 and the valve cover 2 can be selected according to different usage environments and requirements.

[0034] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A pre-filtered vent valve, characterized in that: Includes valve body, valve cover, and breathable membrane; The valve body has a vent end and a connection end at its two ends, respectively. The valve body is provided with a flow channel that passes through the vent end and the connection end. At least two inwardly protruding baffles are formed in the flow channel. Each baffle is separated along the axial direction of the valve body and is staggered along the circumferential direction of the valve body. The valve cover is connected to the vent end of the valve body, and a vent channel is formed between the valve cover and the valve body. The breathable membrane is fitted to the breathable end of the valve body. The breathable membrane is located between the valve body and the valve cover and separates the breathable channel and the flow channel.

2. The pre-filtered ventilator valve as described in claim 1, characterized in that: The vent end of the valve body forms an outwardly protruding retaining edge; the vent channel is formed between the valve cover and the retaining edge.

3. The pre-filtered vent valve as described in claim 2, characterized in that: The valve cover is provided with at least two latches that fasten the retaining edge.

4. The pre-filtered ventilator valve as described in claim 2, characterized in that: The retaining edge has a recess, and the air passage is formed between the valve cover and the recess of the retaining edge.

5. The pre-filtered vent valve as described in claim 1, characterized in that: The outer side of the valve body is provided with connecting threads and a retaining edge in sequence from the connecting end to the venting end.

6. The pre-filtered ventilator valve as described in claim 5, characterized in that: A sealing ring is fitted to the side of the valve body near the connection end.

7. The pre-filtered ventilator valve as described in claim 5, characterized in that: The outer periphery of the valve body's retaining edge forms a hexagonal retaining surface.

8. The pre-filtered vent valve as described in claim 1, characterized in that: The flow channel of the valve body is divided into a small orifice section and a large orifice section along the direction from the connection end to the vent end. The diameter of the large orifice section is larger than that of the small orifice section, and each baffle is set in the small orifice section.

9. The pre-filtered ventilator valve as described in claim 1, characterized in that: The valve body is fitted with a support frame at the vent end, and the support frame supports the vent membrane.

10. The pre-filtered vent valve as described in claim 1, characterized in that: The valve body and valve cover are made of plastic or metal.

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