Oil-gas separation valve

Abstract

The invention discloses an oil-gas separation valve which comprises a ventilation pipeline, the ventilation pipeline internally comprises a main cavity, the main cavity is communicated with an air inlet and an air outlet, a displacement part is movably connected into the main cavity, and in the gravity direction, when the air outlet inclines downwards, the displacement part slides along the main cavity to abut against the air outlet. According to the ventilation pipeline, the displacement part is arranged in the main cavity in the ventilation pipeline, the displacement part can perform relative displacement in the main cavity, the air inlet and the air outlet are connected in the main cavity, and the air outlet can be blocked through the displacement effect of the displacement part, so that oil cannot be discharged through the air outlet, and the effect of square oil leakage can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of gearboxes, and in particular to an oil-gas separation valve. Background Art

[0002] For example, the publication number "CN115163798A" discloses "a transmission oil-gas separation method and its oil-gas separation structure". The method is applied between the first shell and the second shell. The first shell and the second shell are provided with an oil return chamber, a turbulent flow chamber and an exhaust chamber which are connected in sequence. The mixed gas first passes through the oil return chamber, and most of the oil and gas in the oil return chamber hit the oil baffle rib of the oil return chamber and flow back, and the oil adheres to the oil baffle rib of the inner wall of the oil return chamber and flows back. The oil and gas passing through the oil return chamber also carry part of the mixed gas into the turbulent flow chamber. The chamber volume of the turbulent flow chamber is small, and the oil baffle ribs of the turbulent flow chamber are arranged separately. After hitting the oil baffle rib of the turbulent flow chamber, the oil and gas return and collide with the inlet gas of the turbulent flow chamber, so that the diameter of the oil droplets in the mixed gas increases, and finally adheres to the oil baffle rib of the turbulent flow chamber and flows back. However, in actual applications, when the transmission is placed on an all-terrain motorcycle, due to the need to cope with various complex road conditions, when the vehicle is in a dumping or extreme tilting state, it is easy to cause the transmission to spray or leak oil. Summary of the invention

[0003] In view of the problem in the prior art mentioned in the background technology that the gearbox cannot cope with possible oil leakage under extreme road conditions, the present invention provides an oil-gas separation valve, which can block the air outlet of the valve body after the vehicle overturns due to complex road conditions to prevent oil leakage from the gearbox, while ensuring the oil-gas separation effect during normal driving and recovering the oil.

[0004] To achieve the above objectives, the present invention adopts the following technical solutions.

[0005] An oil-gas separation valve includes a ventilation duct, wherein the ventilation duct includes a main cavity, wherein the main cavity is connected with an air inlet and an air outlet, wherein a displacement member is movably connected in the main cavity, and in the direction of gravity, when the air outlet is tilted downward, the displacement member slides along the main cavity and abuts against the air outlet. In the present application, the displacement member is arranged in the main cavity in the ventilation duct, and the displacement member can perform relative displacement in the main cavity, wherein the main cavity is connected with an air inlet and an air outlet, wherein the air inlet and the air outlet can respectively take in and out air, and the oil-gas mixture can be separated into oil and liquid in the main cavity, and when the vehicle rolls over, the air outlet can be blocked by the displacement effect of the displacement member, so that the oil and liquid will not be discharged through the air outlet, thereby achieving the effect of preventing oil leakage, and further, the displacement member in the main cavity is preferably an easily displaceable structure, including but not limited to a ball and a slider; wherein since the displacement member is arranged in the main cavity , oil-liquid separation is carried out in the main cavity, so there is more oil on the displacement member, which improves the lubrication effect, reduces friction resistance, and thus can improve the response smoothness of the displacement member after the vehicle overturns; wherein in the present application, only when the air outlet is tilted downward, the displacement member is under the action of gravity, so that the displacement member can move toward the side of the air outlet, and when it is in the normal position, due to the action of gravity, the displacement member will not block the air outlet; further, in the present application, the air outlet is set at the top of the ventilation duct, and the oil-gas separation valve is set at the top of the gearbox at the same time, so that the air outlet can be blocked by the displacement member.

[0006] Preferably, the main cavity includes a central cavity and a side cavity, the air outlet is located in the central cavity, the air inlet is located in the side cavity, and the displacement member includes a blocking portion located in the central cavity and the side cavity, and the blocking portion forms a multi-angle channel located between the air inlet and the air outlet in the main cavity. In the present application, the air inlet and the air outlet are respectively arranged on the side cavity and the central cavity, so that the air inlet and the air outlet are staggered, thereby preventing the oil-gas separation material from flowing directly from the air inlet to the air outlet, and at the same time, the displacement member is provided with a blocking portion, so that the blocking portion can form a multi-angle channel in the main cavity, so that the oil-gas mixture can pass through the multi-angle channel after passing through the air inlet to achieve a sufficient oil-gas separation effect.

[0007] Preferably, a sponge block is pressed against the bottom of the displacement member, and an oil return channel is provided on the displacement member, through which oil can flow into the sponge block. When the displacement member is placed horizontally, the sponge block restores and pushes the displacement member to move toward one side of the air outlet, and the oil in the sponge block flows toward one side of the displacement member and pushes the displacement member. The sponge block is arranged under the displacement member, and the gravity of the displacement member squeezes the sponge block, so that the sponge block is compressed and can fully absorb the oil. Therefore, more oil is absorbed in the sponge block during use, and because the oil also has gravity, more oil is mainly collected on the bottom of the sponge block, and because the sponge block also has an elastic effect, only the gravity of the displacement member is pressurized on the sponge block; therefore, when the vehicle tilts and falls over, the air outlet faces downward, and the entire sliding cavity tilts downward, so that the displacement member slides downward under the action of gravity, and then abuts against the air outlet, and because the oil and gas are separated in the main cavity, the sliding cavity is also filled with oil, so the friction between the displacement member and the sliding cavity can be reduced, so that the displacement member can move smoothly It abuts against the air outlet, and during the abutting process, since the gravity of the displacement piece tilts toward the air outlet, the pressure on the sponge block disappears, so the elastic action of the sponge block can generate thrust on the displacement piece, and at the same time, since the oil is at the bottom of the sponge block before tipping, the oil will move toward the side of the sponge block after tipping, and then will also squeeze the displacement piece, so that the displacement piece can move toward the air outlet. Therefore, when the vehicle does not tip over, but only rolls over or deflects at a large angle, since the displacement piece is in a horizontal state or a nearly horizontal state, the gravity of the displacement piece cannot drive the displacement piece to move toward the air outlet, and the elastic force of the sponge block and the flow of oil can also push the displacement piece to abut the air outlet, thereby blocking the air outlet and preventing oil from leaking sideways.

[0008] Preferably, the oil return channel is an oil return groove, which is arranged on the side wall of the displacement member and exposed in the main cavity. By arranging the oil return channel into an oil return groove structure and arranging the oil return groove on the side wall of the displacement member, the contact friction area of ​​the displacement member can be reduced, thereby improving the smoothness of the movement of the displacement member in the main cavity; at the same time, the oil return groove is arranged on the side wall of the displacement member, so that the main cavity can be connected to the sponge block, and the oil can flow to the sponge block through the oil return groove, and the oil is collected by the sponge block.

[0009] Preferably, the displacement member is a cylindrical structure, a sliding cavity is provided in the main cavity, and the displacement member is always partially located in the sliding cavity during the movement. The displacement member is always partially located in the sliding cavity, so that the sliding cavity can always produce a radial limiting effect on the displacement member, thereby ensuring the displacement stability of the displacement member and ensuring that the displacement member can accurately abut against the air outlet, thereby avoiding oil leakage.

[0010] Preferably, the displacement member is a ball bearing slidably connected to the main cavity, and a circular arc groove is provided on one side of the main cavity near the air outlet, and the air outlet is located at the bottom of the circular arc groove. The displacement member is set as a ball bearing structure, so that the displacement member has better flexibility and can better adapt to the position change of the vehicle, and has better flexibility. At the same time, a circular arc groove is provided on one side of the main cavity near the air outlet, so that the ball bearing can fit the circular arc groove more closely, thereby improving the blocking effect of the air outlet and preventing oil leakage.

[0011] Preferably, the bottom of the main cavity is connected to an oil return unit, which abuts against the displacement member. An oil return unit is provided at the bottom of the main cavity, through which the main cavity and the gearbox can be connected, thereby ensuring that the oil can flow back to the gearbox through the oil return unit.

[0012] Preferably, the oil return unit includes a connecting pipe connected to the main cavity, the connecting pipe is connected to an umbrella-shaped cover on the side away from the main cavity, and the edge of the umbrella-shaped cover is inclined toward the side close to the main cavity. The umbrella-shaped cover is arranged on the oil return unit, wherein the edge of the umbrella-shaped cover is inclined toward the main cavity, and preferably, the projection surface of the umbrella-shaped cover covers the air inlet, so as to prevent the oil from splashing directly into the air inlet during operation and causing the air inlet to be blocked.

[0013] Preferably, the oil return unit includes a connecting pipe connected to the main cavity, a sub-cavity is arranged in the connecting pipe, the sub-cavity abuts against the displacement member, and a side wall of the sub-cavity is provided with an oil return groove, which connects the main cavity and the sub-cavity. By arranging the oil return groove on the sub-cavity, the displacement member can be prevented from blocking the sub-cavity, and when the displacement member abuts against the top of the sub-cavity, oil can be returned through the oil return groove on the sub-cavity.

[0014] Preferably, the connecting pipe is connected to a main oil return hole on the side away from the main cavity, and the connecting pipe is connected to the inside of the gearbox through the main oil return hole.

[0015] The beneficial effects of the present invention are as follows: (1) When the vehicle overturns due to complex road conditions, the valve body's air outlet can be blocked to prevent transmission oil leakage. At the same time, during normal driving, the oil-gas separation effect can be achieved to recover the oil; (2) The displacement member can achieve a blocking effect on the air outlet in various situations. When the displacement member is in a horizontal state and cannot move by gravity, a pushing effect can be generated by the elastic effect of the sponge block and the flow of oil adsorbed on the sponge block; (3) It can improve the protection effect of the air inlet and prevent the air inlet from being blocked by splashing oil, thereby ensuring that oil and gas separation can be performed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an axonometric cross-sectional view of the present invention.

[0017] Figure 2 It is a partial axonometric view of the present invention.

[0018] Figure 3 This is a cross-sectional view of Example 2.

[0019] In the figure: 1 ventilation duct, 11 air inlet, 12 air outlet, 13 multi-corner channel; 2 main cavity, 21 central cavity, 22 side cavity, 23 sliding cavity, 24 arc groove; 3 displacement member, 31 blocking portion, 32 oil return channel, 321 outer wall connecting groove, 33 ball; 4 sponge blocks; 5 oil return unit, 51 connecting pipe, 52 umbrella cover, 53 auxiliary cavity, 531 oil return groove, 54 main oil return hole DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0021] Embodiment 1: like Figure 1As shown, an oil-gas separation valve includes a ventilation pipe 1, the ventilation pipe 1 includes a main cavity 2, the main cavity 2 is connected to an air inlet 11 and an air outlet 12, and a displacement member 3 is movably connected in the main cavity 2. In the direction of gravity, when the air outlet 12 tilts downward, the displacement member 3 slides along the main cavity 2 and abuts against the air outlet 12. In the present application, a displacement member 3 is arranged in the main cavity 2 in the ventilation duct 1, and the displacement member 3 can perform relative displacement in the main cavity 2. An air inlet 11 and an air outlet 12 are connected in the main cavity 2, wherein the air inlet 11 and the air outlet 12 can respectively take in and out air, and the oil-gas mixture can be separated into oil and liquid in the main cavity 2. When the vehicle rolls over, the air outlet 12 can be blocked by the displacement effect of the displacement member 3, so that the oil will not be discharged through the air outlet 12, thereby achieving the effect of preventing oil leakage. Furthermore, the displacement member 3 in the main cavity 2 is preferably an easily displaceable structure, including but not limited to a ball and a slider; wherein since the displacement member 3 is arranged in the main cavity In the body 2, oil-liquid separation is carried out in the main cavity 2, so there is more oil on the displacement member 3, which improves the lubrication effect, reduces the friction resistance, and thus can improve the response smoothness of the displacement member 3 after the vehicle overturns; wherein in the present application, only when the air outlet 12 is tilted downward, the displacement member 3 is under the action of gravity, so that the displacement member 3 can move toward the side of the air outlet 12, and when in the normal position, due to the action of gravity, the displacement member 3 will not block the air outlet 12; further, in the present application, the air outlet 12 is set at the top of the ventilation duct 1, and the oil-gas separation valve is set at the top of the gearbox, so that the air outlet 12 can be blocked by the displacement member 3.

[0022] like Figure 1 , 2 As shown, the main cavity 2 includes a central cavity 21 and a side cavity 22, the air outlet 12 is located in the central cavity 21, the air inlet 11 is located in the side cavity 22, and the displacement member 3 includes a blocking portion 31 located in the central cavity 21 and the side cavity 22, and the blocking portion 31 forms a multi-angle channel 13 located between the air inlet 11 and the air outlet 12 in the main cavity 2. In the present application, the air inlet 11 and the air outlet 12 are respectively arranged on the side cavity 22 and the central cavity 21, so that the air inlet 11 and the air outlet 12 are staggered, thereby preventing the oil-gas separation material from directly flowing out from the air inlet 11 to the air outlet 12, and at the same time, the displacement member 3 is provided with the blocking portion 31, so that the blocking portion 31 can form a multi-angle channel 13 in the main cavity 2, and then the oil-gas mixture can pass through the multi-angle channel 13 after passing through the air inlet 11 to achieve a sufficient oil-gas separation effect.

[0023] like Figure 1As shown, a sponge block 4 is pressed against the bottom of the displacement member 3, and an oil return channel 32 is provided on the displacement member 3. The oil can flow into the sponge block 4 through the oil return channel. When the displacement member 3 is placed horizontally, the sponge block 4 restores and pushes the displacement member 3 to move toward the air outlet 12. The oil in the sponge block 4 flows toward one side of the displacement member 3 and pushes the displacement member 3. The sponge block 4 is arranged under the displacement member 3, and the sponge block 4 is squeezed by the gravity of the displacement member 3, so that the sponge block 4 is compressed, and the sponge block 4 can fully absorb the oil. Therefore, during use, more oil is absorbed in the sponge block 4, and because the oil also has gravity, more oil is mainly collected on the bottom of the sponge block 4 on the sponge block 4, and because the sponge block 4 also has an elastic effect, only the gravity of the displacement member 3 is pressed on the sponge block 4; therefore, when the vehicle tilts and falls over, the air outlet 12 faces downward, and the entire sliding cavity 23 tilts downward, so that the displacement member 3 slides downward under the action of gravity, and then abuts against the air outlet 12, and because oil and gas are separated in the main cavity 2, the sliding cavity 23 is also filled with oil, so that the friction between the displacement member 3 and the sliding cavity 23 can be reduced, so that the displacement member 3 can move smoothly The displacement piece 3 abuts against the air outlet 12, and during the abutting process, the weight of the displacement piece 3 tilts toward the air outlet 12, so the pressure on the sponge block 4 disappears. Therefore, the elastic action of the sponge block 4 can generate a thrust on the displacement piece 3. At the same time, since the oil is at the bottom of the sponge block 4 before tipping, the oil will move toward the side of the sponge block 4 after tipping, and then will also squeeze the displacement piece 3, so that the displacement piece 3 can move toward the air outlet 12. Therefore, when the vehicle does not tip over, but only rolls over or deflects at a large angle, since the displacement piece 3 is in a horizontal state or a nearly horizontal state, the weight of the displacement piece 3 cannot drive the displacement piece 3 to move toward the air outlet 12. The displacement piece 3 can also be pushed to abut against the air outlet 12 by the elastic force of the sponge block 4 and the flow of oil, thereby blocking the air outlet 12 and preventing oil from leaking sideways.

[0024] like Figure 1 , 2 As shown, the oil return channel 32 is an oil return groove 531, which is arranged on the side wall of the displacement member 3 and is exposed in the main cavity 2. By setting the oil return channel 32 as the oil return groove 531 structure and arranging the oil return groove 531 on the side wall of the displacement member 3, the contact friction area of ​​the displacement member 3 can be reduced, thereby improving the smoothness of the movement of the displacement member 3 in the main cavity 2; at the same time, the oil return groove 531 is arranged on the side wall of the displacement member 3, so that the main cavity 2 can be connected to the sponge block 4, and the oil can flow to the sponge block 4 through the oil return groove 531, and the oil is collected by the sponge block 4.

[0025] like Figure 1As shown, the displacement member is a cylindrical structure, and a sliding cavity 23 is provided in the main cavity 2. The displacement member is always partially located in the sliding cavity 23 during the movement. The displacement member is always partially located in the sliding cavity 23, so that the sliding cavity 23 can always produce a radial limiting effect on the displacement member 3, thereby ensuring the displacement stability of the displacement member 3 and ensuring that the displacement member 3 can accurately abut on the air outlet 12, thereby avoiding oil leakage.

[0026] The assembly and working process of the oil-gas separation valve in this embodiment are as follows: in this embodiment, the air flow into the ventilation pipe 1 of the valve body from the side of the air inlet 11, and flows out from the air outlet 12 after passing through the main cavity 2. The oil and gas mixture flows through the ventilation pipe 1. Oil and gas separation can be performed in the process of the oil and gas mixture flowing through the ventilation pipe 1. An oil return unit 5 connected to the main cavity 2 is also provided on the ventilation pipe 1. The oil return unit 5 can be used to reflux and collect the oil after oil and gas separation in the main cavity 2, and then return it to the gearbox. Furthermore, in the present embodiment, a displacement member 3 is provided in the main cavity 2 in a sliding connection. The displacement member 3 is not fixedly limited in the axial direction of the valve, but is limited in the radial direction. Therefore, the displacement member 3 can be displaced in the opposite direction along the axis of the central cavity 21. The position of the air outlet 12 is aligned with the displacement member 3. Therefore, when the displacement member 3 is moving, it can abut against the air outlet 12. The displacement member 3 abuts against the air outlet 12, thereby blocking the air outlet 12, and thus isolating the ventilation function of the ventilation duct 1. The displacement member 3 is limited only in the radial direction. Therefore, when the air outlet 12 is tilted downward, under normal circumstances, the oil in the gearbox will flow out through the air outlet 12 under the action of gravity. Under normal circumstances, the gearbox will not often have the air outlet 12 facing downward. However, the gearbox on an all-terrain motorcycle often tilts and falls over greatly because it often travels on complex roads. Therefore, it is necessary to block the air outlet 12 of the ventilation duct 1 in the case of a large tilt or fall, so as to prevent the oil from flowing out.

[0027] In the present embodiment, specifically, the ventilation duct 1 is divided into two parts, an upper part and an lower part, an air outlet 12 is arranged in the upper part, and an air inlet 11 is arranged in the lower part, wherein the air inlet 11 and the air outlet 12 are staggered in the radial direction. In the present embodiment, the main cavity 2 is divided into a central cavity 21 and a side cavity 22, wherein the central cavity 21 is located in the middle area of ​​the main cavity 2, and the side cavity 22 is located in the side area of ​​the main cavity 2, the air inlet 11 is arranged on the side cavity 22, and the air outlet 12 is arranged on the central cavity 21, and a sliding cavity 23 is arranged between the air inlet 11 and the air outlet 12, and the sliding cavity 23 is arranged opposite to the air outlet 12, and a displacement member 3 is slidably connected in the sliding cavity 23, and in the present embodiment, the displacement member 3 is a cylindrical structure, and the sliding cavity 23 in the present embodiment is in the lower part of the ventilation duct 1, so that part of the displacement member 3 will be exposed in the central cavity. 21, since the displacement member 3 is a cylindrical structure, a multi-angle channel 13 will be formed in the ventilation duct 1, wherein due to the formation of the multi-angle channel 13, the oil-gas mixture structure passes through the air inlet 11 and then passes through the multi-angle channel 13 for two transfers before flowing to the air outlet 12. Since the multi-angle channel 13 increases the flow angle of the oil and gas substances, a more thorough and sufficient oil and gas separation can be performed. Since the cylindrical structure of the displacement member 3 makes the angle of the multi-angle channel 13 more vertical, it has an obstruction effect on the flow of the oil-gas mixture, thereby preventing the oil-gas separation substance from flowing directly to the air outlet 12; therefore, in the present embodiment, the air inlet 11 and the air outlet 12 are both arranged along the axis, and since the cylindrical structure of the displacement member 3 is also arranged along the axis direction, the oil-gas mixture can be passed through multiple angles to the greatest extent, thereby improving the oil-gas separation efficiency.

[0028] In this embodiment, the displacement member 3 is a cylindrical structure, and an outer wall connecting groove 321 is provided on the side wall of the displacement member 3, wherein the outer wall connecting groove 321 can connect the central cavity 21 and the sponge block 4 located below the displacement member 3, so that the oil can flow through the outer wall connecting groove 321 to the sponge block 4, and then flow through the sponge block 4 to the oil return unit 5.

[0029] In the present embodiment, the sponge block 4 is arranged below the displacement member 3, and the sponge block 4 is squeezed by the gravity of the displacement member 3, so that the sponge block 4 is compressed, and the sponge block 4 can fully absorb the oil. Therefore, during use, more oil is absorbed in the sponge block 4, and because the oil also has gravity, more oil is mainly collected at the bottom of the sponge block 4 on the sponge block 4, and because the sponge block 4 also has an elastic effect, only the gravity of the displacement member 3 is pressurized on the sponge block 4; therefore, when the vehicle tilts and falls over, the air outlet 12 faces downward, and the entire sliding cavity 23 tilts downward, so that the displacement member 3 slides downward under the action of gravity, and then abuts against the air outlet 12, and because the oil and gas are separated in the main cavity 2, the sliding cavity 23 is also filled with oil, so that the friction between the displacement member 3 and the sliding cavity 23 can be reduced, so that the displacement member 3 The displacement piece 3 is able to smoothly abut against the air outlet 12, and during the abutting process, since the gravity of the displacement piece 3 tilts toward the air outlet 12, the pressure on the sponge block 4 disappears, and the elastic action of the sponge block 4 can generate thrust for the displacement piece 3, and at the same time, since the oil is at the bottom of the sponge block 4 before tipping, the oil will move toward the side of the sponge block 4 after tipping, and will also squeeze the displacement piece 3, so that the displacement piece 3 can move toward the air outlet 12. Therefore, when the vehicle does not tip over, but only rolls over or deflects at a large angle, since the displacement piece 3 is in a horizontal state or a nearly horizontal state, the gravity of the displacement piece 3 cannot drive the displacement piece 3 to move toward the air outlet 12, and the displacement piece 3 can be pushed to abut against the air outlet 12 by the elastic force of the sponge block 4 and the flow of oil, thereby blocking the air outlet 12 and preventing oil from leaking sideways.

[0030] In this embodiment, an oil return unit 5 is arranged below the sponge block 4, wherein the oil return unit 5 includes a connecting pipe 51, wherein the connecting pipe 51 is connected to the sponge block 4, so that the oil on the sponge block 4 can pass through the connecting pipe 51, and an umbrella-shaped cover 52 is arranged at the bottom of the connecting pipe 51, the umbrella-shaped cover 52 is inclined toward one side of the main cavity 2, and the umbrella-shaped cover 52 blocks the air inlet 11, so that the splashing oil can be blocked by the umbrella-shaped cover 52 to prevent the oil from blocking the air inlet 11 or entering the main cavity 2 through the air inlet 11.

[0031] Embodiment 2: like Figure 3As shown, an oil-gas separation valve includes a ventilation pipe 1, the ventilation pipe 1 includes a main cavity 2, the main cavity 2 is connected to an air inlet 11 and an air outlet 12, and a displacement member 3 is movably connected in the main cavity 2. In the direction of gravity, when the air outlet 12 tilts downward, the displacement member 3 slides along the main cavity 2 and abuts against the air outlet 12. In the present application, a displacement member 3 is arranged in the main cavity 2 in the ventilation duct 1, and the displacement member 3 can perform relative displacement in the main cavity 2. An air inlet 11 and an air outlet 12 are connected in the main cavity 2, wherein the air inlet 11 and the air outlet 12 can respectively take in and discharge air, and the oil-gas mixture can be separated into oil and liquid in the main cavity 2. When the vehicle rolls over, the air outlet 12 can be blocked by the displacement effect of the displacement member 3, so that the oil will not be discharged through the air outlet 12, thereby achieving the effect of preventing oil leakage. Furthermore, the displacement member 3 in the main cavity 2 is preferably an easily displaceable structure, including but not limited to a ball 33 and a slider; wherein since the displacement member 3 is arranged in the main cavity 2 In the cavity 2, oil-liquid separation is carried out in the main cavity 2, so there is more oil on the displacement member 3, which improves the lubrication effect, reduces friction resistance, and thus can improve the response smoothness of the displacement member 3 after the vehicle overturns; wherein in the present application, only when the air outlet 12 is tilted downward, the displacement member 3 is under the action of gravity, so that the displacement member 3 can move toward the side of the air outlet 12, and when in the normal position, due to the action of gravity, the displacement member 3 will not block the air outlet 12; further, in the present application, the air outlet 12 is set at the top of the ventilation duct 1, and the oil-gas separation valve is set at the top of the gearbox at the same time, so that the air outlet 12 can be blocked by the displacement member 3.

[0032] like Figure 3 As shown, the displacement member 3 is a ball 33 slidably connected in the main cavity 2, and a circular arc groove 24 is provided on the side of the main cavity 2 close to the air outlet 12, and the air outlet 12 is located at the bottom of the circular arc groove 24. The displacement member 3 is set as a ball 33 structure, so that the displacement member 3 is more flexible and can better adapt to the position change of the vehicle, making it more flexible. At the same time, a circular arc groove 24 is provided on the side of the main cavity 2 close to the air outlet 12, so that the ball 33 can fit the circular arc groove 24 more closely, thereby improving the blocking effect of the air outlet 12 and preventing oil leakage.

[0033] like Figure 3 As shown, the bottom of the main cavity 2 is connected to an oil return unit 5, and the oil return unit 5 abuts against the displacement member 3. The oil return unit 5 is arranged at the bottom of the main cavity 2, and the main cavity 2 and the gearbox can be connected through the oil return unit 5, thereby ensuring that the oil can flow back to the gearbox through the oil return unit 5.

[0034] like Figure 3As shown, the oil return unit 5 includes a connecting pipe 51 connected to the main cavity 2, and an umbrella-shaped cover 52 is connected to the side of the connecting pipe 51 away from the main cavity 2, and the edge of the umbrella-shaped cover 52 is inclined toward the side of the main cavity 2. The umbrella-shaped cover 52 is arranged on the oil return unit 5, wherein the edge of the umbrella-shaped cover 52 is inclined toward the side of the main cavity 2, and preferably, the projection surface of the umbrella-shaped cover 52 covers the air inlet 11, so as to prevent the oil from directly splashing into the air inlet 11 during operation, causing the air inlet 11 to be blocked.

[0035] like Figure 3 As shown, the oil return unit 5 includes a connecting pipe 51 connected to the main cavity 2, a sub-cavity 53 is arranged in the connecting pipe 51, the sub-cavity 53 abuts against the displacement member 3, and an oil return groove 531 is arranged on the side wall of the sub-cavity 53, and the oil return groove 531 connects the main cavity 2 and the sub-cavity 53. By arranging the oil return groove 531 on the sub-cavity 53, the displacement member 3 is prevented from blocking the sub-cavity 53, and when the displacement member 3 abuts against the top of the sub-cavity 53, oil can be returned through the oil return groove 531 on the sub-cavity 53.

[0036] like Figure 3 As shown, the connecting pipe 51 is connected to a main oil return hole 54 on one side away from the main cavity 2. The connecting pipe 51 is connected to the inside of the gearbox through the main oil return hole 54.

[0037] The assembly and working process of the oil-gas separation valve in this embodiment are as follows: In this embodiment, the positions of the air inlet 11 and the air outlet 12 set in the ventilation pipe 1 are different from those in Example 1. In this embodiment, the air inlet 11 is set on the side of the main cavity 2, and the air outlet 12 is set above the main cavity 2. Furthermore, the axial direction of the air inlet 11 set on the side of the main cavity 2 is perpendicular to the axial setting direction of the air outlet 12, so that the oil-gas mixture can turn inside the main cavity 2 when entering the main cavity 2, thereby improving the oil-gas separation efficiency. There are multiple air inlets 11 in this embodiment, and each air inlet 11 is arranged in a ring on the side of the ventilation pipe, thereby improving the uniformity of the air intake.

[0038] At the same time, different from Example 1, in this embodiment, the displacement member 3 is set to a ball 33 structure, so that the displacement member 3 can be smoothly displaced in the main cavity 2, thereby improving the sensitive responsiveness to azimuth changes. In this embodiment, an oil return unit 5 is arranged below the main cavity 2, and the oil return unit 5 is connected to the main cavity 2 through a connecting pipe 51, and the sub-cavity 53 in the connecting pipe 51 is connected to the main cavity 2, and the ball 33 arranged in the main cavity 2 abuts on the connecting pipe 51, so an oil return groove 531 is arranged on the sub-cavity 53 to avoid the ball 33 abutting on the sub-cavity 53 to block the oil return channel, and the oil return groove 531 enables the oil to pass through the oil return groove 531 after passing through the ball 33 to flow to the sub-cavity 53, and the main oil return hole 54 connected to the sub-cavity 53 can collect the oil collected in the sub-cavity 53 back into the gearbox. An umbrella-shaped cover 52 is provided at the bottom of the connecting pipe 51. The umbrella-shaped cover 52 is inclined toward one side of the main cavity 2, and the umbrella-shaped cover 52 blocks the air inlet 11, so that the splashing oil can be blocked by the umbrella-shaped cover 52 to prevent the oil from blocking the air inlet 11 or entering the main cavity 2 through the air inlet 11.

Claims

1. An oil-gas separation valve, characterized in that: It includes a ventilation duct, which includes a main cavity. The main cavity is connected to an air inlet and an air outlet. A displacement piece is movably connected in the main cavity. In the direction of gravity, when the air outlet is tilted downward, the displacement piece slides along the main cavity and abuts against the air outlet.

2. The oil-gas separation valve according to claim 1, characterized in that: The main cavity includes a central cavity and a side cavity, the air outlet is located in the central cavity, the air inlet is located in the side cavity, the displacement member includes a blocking portion located in the central cavity and the side cavity, and the blocking portion forms a multi-corner channel between the air inlet and the air outlet in the main cavity.

3. The oil-gas separation valve according to claim 1, characterized in that: A sponge block is pressed against the bottom of the displacement member, and an oil return channel is provided on the displacement member. Oil can flow into the sponge block through the oil return channel. When the displacement member is placed horizontally, the sponge block restores and pushes the displacement member to move toward one side of the air outlet, and the oil in the sponge block flows toward one side of the displacement member and pushes the displacement member.

4. The oil-gas separation valve according to claim 3, characterized in that: The oil return channel is an outer wall connecting groove, the outer wall connecting groove is arranged on the side wall of the displacement member, and the oil return groove is exposed in the main cavity.

5. The oil-gas separation valve according to claim 1, characterized in that: The displacement member is a cylindrical structure, a sliding cavity is arranged in the main cavity, and the displacement member is always partially located in the sliding cavity during the movement process.

6. The oil-gas separation valve according to claim 1, characterized in that: The displacement member is a ball bearing slidably connected in the main cavity. A circular arc groove is arranged on one side of the main cavity close to the air outlet. The air outlet is located at the bottom of the circular arc groove.

7. An oil-gas separation valve according to any one of claims 1 to 6, characterized in that: The bottom of the main cavity is connected with an oil return unit, and the oil return unit abuts against the displacement member.

8. The oil-gas separation valve according to claim 7, characterized in that: The oil return unit comprises a connecting pipe connected to the main cavity, the connecting pipe is connected to an umbrella-shaped cover at a side away from the main cavity, and the edge of the umbrella-shaped cover is inclined at a side close to the main cavity.

9. The oil-gas separation valve according to claim 7, characterized in that: The oil return unit includes a connecting pipe connected to the main cavity, a sub-cavity is arranged in the connecting pipe, the sub-cavity abuts against the displacement member, an oil return groove is arranged on the side wall of the sub-cavity, and the oil return groove connects the main cavity and the sub-cavity.

10. An oil-gas separation valve according to claim 9, characterized in that: The connecting pipe is connected with a main oil return hole on one side away from the main cavity.

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