Breathable valve and gearbox

Abstract

The utility model relates to the technical field of automobile accessories, and provides a ventilation valve and a gearbox. The ventilation valve comprises a valve body, the valve body is provided with a gas inlet, a gas-oil separation channel and a gas outlet, the gas-oil separation channel is communicated with the gas inlet and the gas outlet, the gas inlet is suitable for being communicated with a gearbox, the gas outlet is suitable for being connected with a ventilation screen, and the gas-oil separation channel extends in the valve body in a winding mode. According to the breather valve provided by the utility model, the gas-oil separation channel extending in the winding manner is arranged in the valve body, so that the probability that oil molecules are condensed and precipitated in the gas-oil separation channel is increased, the oil molecules are prevented from being discharged to the breather screen and even the atmosphere along with air, the breather screen is protected, the pollution of the breather screen is reduced, and the service life of the breather valve is prolonged. The cleaning and replacing period of the ventilation screen is prolonged, the maintenance frequency and cost are reduced, and environmental pollution is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessories, in particular to a breathable valve and a gearbox. Background Art

[0002] The gearbox generates heat when it is working, which causes the air inside the gearbox to expand and increase the internal pressure. This pressure may cause damage to the gearbox housing or oil leakage. Therefore, in the related art, a pipe is connected to the gearbox and a one-way membrane is set at the outlet of the pipe so that the air expanding in the gearbox can be released to the outside through the pipe, thereby balancing the pressure inside the gearbox. However, the air that expands due to heat will carry evaporated oil when it flows, causing the gearbox oil inside the gearbox to leak. The oil will also damage the one-way membrane when it contacts the one-way membrane, increasing the cost of replacing the one-way membrane. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the related art. To this end, the utility model provides a breathable valve to improve the oil-gas separation capability in the breathable valve.

[0004] The utility model also provides a gearbox.

[0005] The utility model provides a breathable valve, comprising: a valve body, the valve body having an air inlet, an air-oil separation channel and an air outlet, the air-oil separation channel connecting the air inlet and the air outlet, the air inlet being suitable for connecting with a gearbox, the air outlet being suitable for connecting with a breathable screen, and the air-oil separation channel extending in a winding manner in the valve body.

[0006] According to the breathable valve provided by the utility model, the wall surface of the gas-oil separation channel is provided with a plurality of oil-collecting protrusions, and the oil-collecting protrusions are used to collect the liquid condensed on the wall surface of the gas-oil separation channel.

[0007] According to the breathable valve provided by the utility model, the gas-oil separation channel includes a main flow channel and an oil collecting space which are interconnected, the wall surface has a plurality of protruding guide ribs, the guide ribs all have straight sections, at least one of the guide ribs also has a curved section connected to the straight section, the main flow channel is formed between any two adjacent straight sections, and the oil collecting space is formed between the curved section and the wall surface.

[0008] The breathable valve provided by the utility model also includes a fixed sealing cover, which is detachably connected to the valve body, one side of the valve body has an opening, the gas-oil separation channel is connected to the opening, and the fixed sealing cover is arranged on the opening to seal the gas-oil separation channel.

[0009] According to the breathable valve provided by the utility model, the valve body is provided with an air outlet pipe, the air outlet pipe connects the air outlet and the air-oil separation channel, the fixed sealing cover is provided with a clamping protrusion, the clamping protrusions are arranged relatively to each other, a clamping groove is formed between the clamping protrusions, and the air outlet pipe is fixed in the clamping groove.

[0010] According to the air valve provided by the utility model, the air outlet pipe has a hollow mounting hole, a fixing protrusion is provided in the clamping groove, the fixing protrusion is arranged in the mounting hole, and the fixing protrusion is suitable for abutting against the side wall of the air permeable screen to fix and seal the air permeable screen.

[0011] According to the breathable valve provided by the utility model, the air outlet pipe has an open portion, which is connected to the air outlet; and / or, an air intake channel is also provided between the air-oil separation channel and the air intake, and the air intake channel has a constricted portion, which is connected to the air-oil separation channel.

[0012] According to the breathable valve provided by the utility model, a first sealing ring is provided in the air outlet pipe, and the first sealing ring is used to seal the breathable screen; and / or a second sealing ring is provided between the fixed sealing cover and the opening edge.

[0013] According to the breathable valve provided by the utility model, the valve body has a plug-in portion, the plug-in portion includes a plurality of elastic columns, a deformation groove is provided between any two adjacent elastic columns, and the air inlet is provided at the plug-in portion.

[0014] The utility model also provides a gearbox, comprising:

[0015] A housing, wherein the housing has an air outlet;

[0016] The above-mentioned air vent valve is inserted into the air outlet.

[0017] The breathable valve provided by the utility model increases the probability of condensation and precipitation of oil molecules in the gas-oil separation channel by arranging a winding and extending gas-oil separation channel in the valve body, thereby reducing the discharge of oil molecules into the breathable screen or even the atmosphere along with the air, thereby protecting the breathable screen, reducing pollution of the breathable screen, extending the cleaning and replacement cycle of the breathable screen, reducing maintenance frequency and cost, and reducing environmental pollution.

[0018] The gearbox provided by the utility model includes the above-mentioned breathable valve, and thus also has the beneficial effects of the above-mentioned breathable valve, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is one of the structural schematic diagrams of the air-permeable valve provided by the utility model.

[0021] Figure 2 yes Figure 1 A partial enlarged view of point A.

[0022] Figure 3 This is the second structural schematic diagram of the air-permeable valve provided by the utility model.

[0023] Figure 4 yes Figure 3 Cross-sectional view along AA direction.

[0024] Figure 5 This is the third structural schematic diagram of the air-permeable valve provided by the utility model.

[0025] Figure 6 It is a structural explosion diagram of the air-permeable valve provided by the utility model.

[0026] Figure 7 The fourth structural schematic diagram of the air-permeable valve provided by the utility model.

[0027] Reference numerals:

[0028] 100, valve body; 101, opening; 102, second sealing ring;

[0029] 110, air inlet passage; 111, air inlet; 112, constriction portion;

[0030] 120, gas-oil separation channel; 121, main flow channel; 122, oil-collecting space; 123, oil-collecting protrusion; 124, flow-guiding rib; 125, straight section; 126, curved section;

[0031] 130, air outlet pipe; 131, air outlet; 132, mounting hole; 134, open portion; 135, first sealing ring;

[0032] 140, plug-in portion; 141, elastic column; 142, deformation groove;

[0033] 200, fixed sealing cover; 201, sealing area; 202, fixed area; 2021, fixed protrusion; 2022, installation channel; 2023, snap-in protrusion; 2024, snap-in groove. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "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. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0036] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0037] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0038] Combine the following Figure 1-Figure 7Describing the breathable valve of the utility model, it should be noted that the breathable valve of the utility model can be applied to a gearbox and can be installed on the housing of the gearbox. The gearbox generates heat during operation, which causes the air inside the gearbox to expand and increase the internal pressure. Without the breathable valve, this pressure may cause the seal to be damaged or oil leaks. Therefore, the breathable valve allows the air inside the gearbox to be exchanged with the atmosphere.

[0039] like Figures 1 to 4 As shown, the utility model provides a breathable valve, including a valve body 100, the valve body 100 has an air inlet 111, an air-oil separation channel 120 and an air outlet 131, the air-oil separation channel 120 connects the air inlet 111 and the air outlet 131, the air inlet 111 is connected to the gearbox, the air outlet 131 is connected to the breathable screen, the air-oil separation channel 120 extends in a winding manner in the valve body 100, when the air in the gearbox expands due to heat, the air will enter the valve body 100 from the air inlet 111 together with the evaporated oil molecules, and pass through the air-oil separation channel 120. Since the temperature of the breathable valve is relatively low, the oil molecules will be cooled and solidified on the wall of the air-oil separation channel 120.

[0040] The winding air-oil separation channel 120 increases the path length of the air flow, so that the air has more time to contact the wall of the air-oil separation channel 120 when flowing through the valve body 100, which can improve the condensation effect of the oil molecules and make them more easily precipitated in the air-oil separation channel 120.

[0041] In addition, the tortuosity of the winding gas-oil separation channel 120 increases, thereby increasing the chance of oil-gas separation. When air carries oil molecules through the winding channel, the oil molecules are more easily separated and attached to the channel wall, thereby improving the efficiency of oil-gas separation. The winding gas-oil separation channel 120 also increases the contact area with the cooling wall surface, making the condensation effect more significant, which helps to condense more oil molecules and retain them in the valve body 100.

[0042] According to the breathable valve of the embodiment of the utility model, a winding and extending air-oil separation channel 120 is provided in the valve body 100, so as to increase the probability of condensation and precipitation of oil molecules in the air-oil separation channel 120, thereby reducing the oil molecules discharged into the breathable screen or even the atmosphere along with the air, thereby protecting the breathable screen, reducing the pollution of the breathable screen, extending the cleaning and replacement cycle of the breathable screen, reducing the maintenance frequency and cost, and reducing environmental pollution.

[0043] like Figure 2As shown, in some embodiments of the present invention, the wall of the gas-oil separation channel 120 is provided with a plurality of oil-collecting protrusions 123, and the oil-collecting protrusions 123 are used to collect the liquid condensed on the wall of the gas-oil separation channel 120. The oil-collecting protrusions 123 are used to collect the liquid condensed on the wall of the gas-oil separation channel 120, thereby promoting the aggregation and merging of oil molecules and accelerating the formation of oil droplets, so that the oil molecules can be separated from the air more efficiently, and the oil droplets are promoted to flow along the channel wall and finally flow back to the inside of the gearbox. The design of the oil-collecting protrusions 123 reduces the diffusion and residue of oil in the gas-oil separation channel 120, and helps to keep the gas-oil separation channel 120 clean and unobstructed.

[0044] like Figure 2 As shown, in some embodiments of the utility model, the gas-oil separation channel 120 includes a main channel 121 and at least one oil-collecting space 122 that are interconnected, the wall surface has a plurality of protruding guide ribs 125, the guide ribs 125 all have straight sections 124, at least one guide rib 125 also has a curved section 126 connected to the straight section 124, a main channel 121 is formed between any two adjacent straight sections 124, and an oil-collecting space 122 is formed between the curved section 126 and the wall surface. The oil-collecting space 122 between the curved section 126 and the wall surface provides a gathering area for oil molecules, which is conducive to the aggregation of oil molecules and the formation of droplets. This design effectively accelerates the gas-oil separation process and makes the oil mist condense faster. The structure of the main channel 121 ensures that the air can flow smoothly, and the curved section 126 increases the deposition opportunity of the oil molecules. Through this design, the oil molecules in the oil-gas mixture can be separated more effectively, further improving the effect of gas-oil separation.

[0045] There may be multiple oil collecting spaces 122, and the provision of multiple oil collecting spaces 122 can improve the overall efficiency of gas-oil separation. Figure 2 This is an embodiment of the utility model. In this embodiment, there are two oil collecting spaces 122, and the oil collecting spaces 122 are both arranged at the ends of the main channel 121, avoiding obstruction in the main flow section and ensuring smoother flow of the fluid in the gas-oil separation channel 120. Guiding the airflow to pass through the main flow section smoothly is conducive to reducing fluid resistance and maintaining stable operation of the entire gas-oil separation system.

[0046] like Figure 2As shown, in one embodiment of the utility model, the oil-collecting protrusion 123 is arranged at the end of the straight section 124. The oil-collecting protrusion 123 is located at the end of the straight section 124 and can effectively capture and gather oil molecules. When the fluid passes through the straight section 124, the oil molecules will be more easily condensed on the oil-collecting protrusion 123 to form larger oil droplets. Adding the oil-collecting protrusion 123 at the end of the straight section 124 makes the air flow more orderly, and the oil molecules can be immediately captured and separated when flowing through these protrusions, thereby enhancing the efficiency of the entire oil-gas separation channel. More oil molecules can be effectively separated and condensed at an early stage, and play a good pre-separation role in the overall oil-gas separation process, further improving the overall efficiency of the separation system. By improving the condensation and reflux efficiency of the oil molecules, the accumulation of oil stains in the air permeable screen is effectively reduced, and its service life is extended, thereby reducing the maintenance frequency and cleaning frequency of the equipment and reducing the maintenance cost.

[0047] like Figures 5 to 7 As shown, in some embodiments of the utility model, the breathable valve further includes a fixed sealing cover 200, which is detachably connected to the valve body 100, and one side of the valve body 100 has an opening 101, and the gas-oil separation channel 120 is connected to the opening 101, and the fixed sealing cover 200 is covered on the opening 101 to seal the gas-oil separation channel 120. After long-term use, the valve body 100 will produce solidified oil accumulation in the gas-oil separation channel 120, and the accumulated oil will block the gas-oil separation channel 120. The detachable design of the fixed sealing cover 200 allows the user to easily open the valve body 100 and directly contact the inside of the gas-oil separation channel 120. In this way, the accumulated oil and other impurities can be cleaned regularly to avoid channel blockage, keep the gas-oil separation function normal, maintain the pressure balance inside the gearbox, and avoid damage to the seal or oil leakage due to excessive pressure, thereby maintaining the stability of the system and ensuring the long-term effective operation of the breathable valve.

[0048] like Figures 4 to 7 As shown, in some embodiments of the utility model, an air outlet pipe 130 is further provided between the air-oil separation channel 120 and the air outlet 131, the air-permeable screen is suitable for connecting to the air outlet pipe 130 through the air outlet 131, the wall of the air outlet pipe 130 has a hollow mounting hole 132, the fixed sealing cover 200 includes a sealing area 201 and a fixed area 202 connected to each other, the sealing area 201 is connected to the opening 101, the fixed area 202 is connected to the outer wall of the air outlet pipe 130, the fixed area 202 has a fixed protrusion 2021, the fixed protrusion 2021 is provided in the mounting hole 132, and the fixed protrusion 2021 is suitable for abutting against the side wall of the air-permeable screen to fix and seal the air-permeable screen.

[0049] There are multiple fixing protrusions 2021, for example, Figure 6 to Figure 7As shown, in this embodiment, there are two fixing protrusions 2021, and the two fixing protrusions 2021 are arranged opposite to each other to form a mounting channel 2022. The air permeable screen is arranged in the mounting channel 2022, so that the fixing protrusions 2021 can fix the air permeable screen. In addition, the air permeable valve also includes a fixing area 202 and a clamping protrusion 2023, and a clamping groove 2024 is formed between adjacent clamping protrusions 2023. The fixing protrusion 2021 is arranged in the clamping groove 2024, and the air outlet pipe 130 is installed in the clamping groove 2024, so that the fixed sealing cover 200 is fixed to the air outlet pipe 130.

[0050] The sealing area 201 of the fixed sealing cover 200 is connected to the opening 101, ensuring the sealing of the gas-oil separation channel 120 and preventing any leakage of the oil-gas mixture. At the same time, the fixed protrusion 2021 abuts against the side wall of the air-permeable screen, further ensuring the sealing integrity between the air-permeable screen and the outlet pipe 130, preventing air leakage and contamination. The fixed area 202 is connected to the outer wall of the outlet pipe 130, making the entire sealing cover structure more stable. The fixed protrusion 2021 is embedded in the mounting hole 132, so that the air-permeable screen is firmly fixed to prevent it from loosening or shifting due to vibration or other reasons during operation.

[0051] like Figure 4 As shown, in some embodiments of the present invention, the air outlet duct 130 has an open portion 134, and the open portion 134 is connected to the air outlet 131. The open portion 134 allows air to be discharged smoothly, reduces the flow resistance of the air, and improves the exhaust efficiency of the entire system. In addition, the design of the open portion 134 allows the air permeable screen to be easily inserted into the air outlet 131, simplifies the installation process, reduces the installation time and difficulty, and improves the installation efficiency.

[0052] In addition, in some embodiments of the present invention, Figure 4 As shown, an air inlet channel 110 is further provided between the air-oil separation channel 120 and the air inlet 111, and the air inlet channel 110 has a constricted portion 112, which is connected to the air-oil separation channel 120. The constricted portion 112 can increase the speed of the air flow at the air inlet 111, so that the air and oil molecules form turbulence when entering the air-oil separation channel 120, which helps to improve the collision and precipitation efficiency of the oil molecules and enhance the air-oil separation effect.

[0053] like Figure 4As shown, in some embodiments of the utility model, a first sealing ring 135 is provided in the air outlet pipe 130. The first sealing ring 135 is used to seal the air permeable screen. The first sealing ring 135 ensures a tight connection between the air permeable screen and the air outlet pipe 130. Good sealing performance can prevent the oil-gas mixture from leaking out, reduce pollution to the surrounding environment, protect the equipment while also being beneficial to environmental protection, and can also maintain the pressure balance inside the system to ensure the normal operation of the gearbox and other related systems. In addition, as Figure 6 As shown, a second sealing ring 102 is provided between the fixed sealing cover 200 and the edge of the opening 101 to prevent the gas in the gas-oil separation channel 120 from leaking from the opening 101 .

[0054] like Figure 1 As shown, in some embodiments of the present utility model, the valve body 100 has a plug-in portion 140, the plug-in portion 140 includes a plurality of elastic columns 141, a deformation groove 142 is provided between any two adjacent elastic columns 141, and the air inlet 111 is provided at the plug-in portion 140. The design of the elastic column 141 makes the plug-in portion 140 have a certain elasticity and flexibility, which can better adapt to the size and shape changes of the gearbox air outlet hole, ensure that the plug-in portion 140 is firmly inserted when plugged into the gearbox, and prevent the air-permeable valve from loosening or falling off due to the vibration or pressure change of the gearbox. In addition, the existence of the elastic column 141 and the design of the deformation groove 142 effectively achieve a better sealing effect through elastic deformation, preventing the oil-gas mixture from leaking at the air inlet 111. The elastic design of the plug-in portion 140 makes the valve body 100 easier to insert and fix, simplifies the installation process, and improves the installation efficiency.

[0055] The utility model also provides a gearbox (not shown in the figure), comprising a housing and the above-mentioned vent valve, the housing having an air outlet, and the vent valve inserted into the air outlet. The gearbox provided by the utility model, because it includes the above-mentioned vent valve, also has the beneficial effects of the above-mentioned vent valve, which will not be described in detail here.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A vent valve, characterized in that: include: A valve body, wherein the valve body has an air inlet, an air-oil separation channel and an air outlet, the air-oil separation channel connects the air inlet and the air outlet, the air inlet is suitable for being connected to a gearbox, the air outlet is suitable for being connected to an air-permeable screen, and the air-oil separation channel extends in a winding manner in the valve body.

2. The breathable valve according to claim 1, characterized in that: The wall surface of the gas-oil separation channel is provided with a plurality of oil-collecting protrusions, and the oil-collecting protrusions are used to collect the liquid condensed on the wall surface of the gas-oil separation channel.

3. The breathable valve according to claim 1, characterized in that: The gas-oil separation channel comprises a main flow channel and an oil collecting space which are interconnected, the wall surface has a plurality of protruding flow guiding ribs, the flow guiding ribs all have straight sections, at least one of the flow guiding ribs also has a curved section connected to the straight section, the main flow channel is formed between any two adjacent straight sections, and the oil collecting space is formed between the curved section and the wall surface.

4. The breathable valve according to claim 1, characterized in that: It also includes a fixed sealing cover, which is detachably connected to the valve body. One side of the valve body has an opening, the gas-oil separation channel is connected to the opening, and the fixed sealing cover is arranged on the opening to seal the gas-oil separation channel.

5. The breathable valve according to claim 4, characterized in that: The valve body is provided with an air outlet pipe, which connects the air outlet and the gas-oil separation channel. The fixed sealing cover is provided with a clamping protrusion, which is arranged relatively to each other, and a clamping groove is formed between the clamping protrusions. The air outlet pipe is fixed in the clamping groove.

6. The breathable valve according to claim 5, characterized in that: The air outlet pipe has a hollow mounting hole, a fixing protrusion is arranged in the clamping groove, the fixing protrusion is arranged in the mounting hole, and the fixing protrusion is suitable for abutting against the side wall of the air permeable screen to fix and seal the air permeable screen.

7. The breathable valve according to claim 5, characterized in that: The air outlet conduit has an open portion, which is connected to the air outlet; and / or, an air intake channel is further provided between the air-oil separation channel and the air intake, and the air intake channel has a constricted portion, which is connected to the air-oil separation channel.

8. The breathable valve according to claim 5, characterized in that: A first sealing ring is provided in the air outlet pipe, and the first sealing ring is used to seal the air-permeable screen; and / or a second sealing ring is provided between the fixed sealing cover and the opening edge.

9. The breathable valve according to claim 1, characterized in that: The valve body has a plug-in portion, the plug-in portion includes a plurality of elastic columns, a deformation groove is provided between any two adjacent elastic columns, and the air inlet is provided at the plug-in portion.

10. A gearbox, characterized in that: include: A housing, wherein the housing has an air outlet; According to any one of claims 1 to 9, the air valve is inserted into the air outlet.

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