Oil leakage prevention oil return device and lubricating system
By installing an oil baffle and sealing groove in the oil return device, the rotation speed of the lubricating oil is blocked and sealed with external structural components, thus solving the problem of lubricating oil leakage and ensuring stable system operation and smooth discharge of lubricating oil.
Patent Information
- Application Number
- CN202520143911.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-21
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2035-01-21
AI Technical Summary
Lubricating oil is prone to leakage in the oil return device, which affects the stable operation of the system.
Design an oil return device to prevent oil leakage, including a return device body, an oil baffle plate, and a sealing groove. The oil baffle plate is set in the opposite direction to the rotation of the lubricating oil to block the rotation speed of the lubricating oil. Combined with the sealing groove, it is sealed to the external structural components to prevent lubricating oil leakage.
It effectively prevents lubricating oil from leaking from the joint between the return oil device and the external structural components, ensuring stable system operation, smooth discharge of lubricating oil, reducing turbulence, and improving system efficiency.
Smart Images
Figure CN223524932U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of oil return devices, and particularly relates to an oil leakage prevention oil return device and a lubricating system. BACKGROUND
[0002] The oil return device is connected to external structural members at both ends by bolts, and the internal part of the oil return device is a high-speed rotating rotor component. The lubricating oil in the oil return device rotates along the inner wall of the oil return device under the action of inertia and centrifugal force as the rotor rotates. During the long-term operation of the lubricating system unit, the problem of lubricating oil leakage is prone to occur, which affects the stable operation of the system. CONTENT OF THE UTILITY MODEL
[0003] The present utility model aims to solve at least one of the technical problems existing in the prior art or related art.
[0004] To this end, the first aspect of the present utility model provides an oil leakage prevention oil return device.
[0005] The second aspect of the present utility model provides a lubricating system.
[0006] Therefore, according to the first aspect of the embodiments of the present application, an oil leakage prevention oil return device is provided, which comprises:
[0007] An oil return device main body is sealingly connected to external structural members. An oil cavity is arranged in the internal part of the oil return device main body. A rotor is arranged in the oil cavity. The rotor rotates in a first direction in the oil cavity, and the rotation axis of the rotor is parallel to the axis of the oil return device main body.
[0008] An oil discharge port is arranged on the oil return device main body. The oil discharge port is in communication with the oil cavity. The oil discharge port is arranged perpendicularly to the axis of the oil return device main body.
[0009] An oil baffle is arranged on the inner wall of the oil return device main body. The second end of the oil baffle extends away from the inner wall of the oil return device main body. The oil baffle covers the oil discharge port.
[0010] The extension direction of the second end of the oil baffle is opposite to the first direction.
[0011] In a feasible implementation manner, the oil leakage prevention oil return device further comprises:
[0012] A smoke discharge port is arranged on the top of the oil return device main body. The smoke discharge port is in communication with the oil cavity.
[0013] An oil separation part is arranged in the internal part of the oil return device main body. The oil separation part covers the smoke discharge port. The oil separation part and the inner wall of the oil return device main body enclose a smoke discharge cavity. The smoke discharge cavity is in communication with the smoke discharge port. An open port is arranged on the oil separation part to introduce smoke into the smoke discharge cavity through the open port.
[0014] In an implementation, the oil leakage prevention and return device further comprises:
[0015] The oil separation plate has a first end connected to the inner wall of the oil return device body and a second end extending in the first direction, and the oil separation plate covers the smoke outlet;
[0016] The connecting plate is arranged perpendicularly to the oil separation plate, has a first end connected to the inner wall of the oil return device body and a second end connected to the oil separation plate.
[0017] In an implementation, the smoke outlet is arranged perpendicularly to the axis of the oil return device body, has a first end connected to the oil return device body and a second end extending away from the oil separation part.
[0018] In an implementation, the smoke outlet and the oil outlet are located on the same radial line of the oil return device body.
[0019] In an implementation, the oil leakage prevention and return device further comprises:
[0020] The sealing groove is arranged on the end face of the oil return device body.
[0021] The sealing part is elastic, at least part of the sealing part is embedded in the sealing groove, the sealing part is in contact with the external structure, and the external structure is connected to the oil return device body in a sealed manner by extruding the sealing part.
[0022] In an implementation, the oil leakage prevention and return device further comprises:
[0023] The first interface is arranged on the upper half of the oil return device body, is arranged radially to the oil return device body, and is in communication with the oil cavity.
[0024] In an implementation, the oil leakage prevention and return device further comprises:
[0025] The second interface is arranged on the lower half of the oil return device body, has a first end connected to the oil return device body, is arranged in a downward inclined manner, and is in communication with the oil cavity.
[0026] In an implementation, the second interface is provided with a threaded hole arranged along the axial direction of the second interface.
[0027] According to a second aspect of the embodiments of the present application, a lubrication system is provided, which comprises the oil leakage prevention and return device according to any of the above technical solutions.
[0028] Compared with the prior art, the oil leakage prevention and return device and the lubrication system have the following beneficial effects:
[0029] The oil leakage prevention oil return device provided by the embodiment of the application comprises an oil return device body and an oil baffle, the oil return device body is sealingly connected with an external structural member to prevent lubricating oil from leaking from the joint between the oil return device body and the external structural member; the rotor rotates in the oil cavity in a first direction, and the rotation of the rotor drives at least part of the lubricating oil to rotate in the oil cavity in the first direction along the inner wall of the oil return device body; the extending direction of the oil baffle from the first end to the second end is opposite to the first direction, and the oil baffle covers the oil discharge port, so that the oil baffle blocks the lubricating oil when the lubricating oil rotates in the oil cavity, and the rotation speed of the lubricating oil when passing through the oil discharge port is reduced, so that the lubricating oil can be discharged more smoothly from the oil discharge port, and the stable operation of the system is facilitated. BRIEF DESCRIPTION OF DRAWINGS
[0030] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The detailed description is made with reference to the accompanying drawings.
[0031] Figure 1 A first angle schematic structural diagram of an oil leakage prevention oil return device according to an embodiment of the application;
[0032] Figure 2 A second angle schematic structural diagram of an oil leakage prevention oil return device according to an embodiment of the application;
[0033] Figure 3 A first angle schematic structural diagram of an oil leakage prevention oil return device according to an embodiment of the application; Figure 1 An enlarged view of A in FIG. 1;
[0034] In the drawings, Figures 1 to 3 The correspondence between the reference signs in FIG. 1 and the component names is as follows:
[0035] 11, oil return device body; 12, oil cavity; 13, oil baffle; 14, smoke discharge port; 15, oil separation part; 16, open port; 17, smoke discharge cavity; 18, sealing groove; 19, sealing part; 20, first interface; 21, second interface; 22, threaded hole; 23, oil discharge port;
[0036] 151, oil separation plate; 152, connecting plate. DETAILED DESCRIPTION
[0037] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0038] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.
[0039] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0040] The preferred embodiments of the present application are described below in conjunction with the accompanying drawings, it should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application.
[0041] As shown in Figure 1 According to the first aspect of the embodiments of the present application, an oil leakage prevention oil return device is provided, comprising: an oil return device body 11 and an oil baffle 13; the oil return device body 11 is sealingly connected with an external structural member, an oil cavity 12 is arranged inside the oil return device body 11, a rotor is arranged in the oil cavity 12, the rotor rotates in a first direction in the oil cavity 12, and the rotation axis of the rotor is parallel to the axis of the oil return device body 11; an oil discharge port 23 is arranged on the oil return device body 11, the oil discharge port 23 is in communication with the oil cavity 12, and the oil discharge port 23 is arranged perpendicular to the axis of the oil return device body 11; a first end of the oil baffle 13 is arranged on the inner wall of the oil return device body 11, a second end of the oil baffle 13 extends away from the inner wall of the oil return device body 11, and the oil baffle 13 covers the oil discharge port 23; wherein the direction in which the oil baffle 13 extends from the first end to the second end is opposite to the first direction.
[0042] The oil leakage prevention and return device provided by the embodiment of the present application comprises an oil return device body 11 and an oil baffle 13. The oil return device body 11 is sealingly connected with an external structural member to prevent lubricating oil from leaking from the joint between the oil return device body 11 and the external structural member. The rotor rotates in the oil cavity 12 in a first direction. The rotation of the rotor drives at least part of the lubricating oil to rotate in the oil cavity 12 in the first direction along the inner wall of the oil return device body 11. The extending direction of the oil baffle 13 from the first end to the second end is opposite to the first direction, and the oil baffle 13 covers the oil discharge port 23. The oil baffle 13 blocks the lubricating oil when the lubricating oil rotates in the oil cavity 12, and reduces the rotation speed of the lubricating oil when the lubricating oil passes through the oil discharge port 23, so that the lubricating oil can be more smoothly discharged from the oil discharge port 23, and the stable operation of the system is facilitated.
[0043] Further, the oil discharge port 23 is arranged at the bottom of the oil return device body 11. After the oil baffle 13 blocks the lubricating oil above the oil discharge port 23 and reduces the rotation speed of the lubricating oil, the lubricating oil flows out from the oil discharge port 23 at the bottom under the action of gravity.
[0044] As a preferred solution, the oil return device body 11 is annular to reduce the dead angle in the oil cavity 12, reduce the turbulent flow of the lubricating oil in the oil cavity 12 when the lubricating oil rotates with the rotor, and enable the lubricating oil to flow smoothly in the oil cavity 12 and be smoothly discharged from the oil discharge port 23.
[0045] In some examples, the first direction is clockwise or counterclockwise. Specifically, as shown in Figure 1 , the lubricating oil rotates clockwise in the oil cavity 12 with the rotor. When the lubricating oil passes through the oil baffle 13, the lubricating oil flows from right to left, and the extending direction of the oil baffle 13 from the first end to the second end is opposite to the first direction, that is, after the first end of the oil baffle 13 is connected with the inner wall of the oil return device body 11, the second end of the oil baffle 13 extends to the right.
[0046] In some examples, the external structural member can comprise a casing, a side cover or a shaft coupling cover, so that the lubricating oil in the device to be lubricated enters the oil cavity 12 from the end of the oil return device, flows out from the oil discharge port 23 to a treatment device, and is treated by the treatment device. After the treatment, the lubricating oil reenters the device to be lubricated from the lubricating oil inlet of the device to be lubricated for lubrication, thereby realizing the circulating lubrication of the device to be lubricated.
[0047] It can be understood that the extending direction of the oil baffle 13 from the first end to the second end is opposite to the first direction means that the extending direction of the oil baffle 13 is simplified as a ray, and the included angle between the direction of the ray and the angular velocity direction of the lubricating oil passing through the ray is greater than 90 degrees and less than or equal to 180 degrees.
[0048] As shown in Figure 1 and Figure 2As shown in a feasible embodiment, the oil leakage-proof oil return device further comprises: a smoke outlet 14 and an oil separation part 15; the smoke outlet 14 is arranged at the top of the oil return device main body 11, and the smoke outlet 14 is in communication with the oil cavity 12; the oil separation part 15 is arranged inside the oil return device main body 11, and the oil separation part 15 is arranged on the smoke outlet 14, and the oil separation part 15 and the inner wall of the oil return device main body 11 enclose a smoke cavity 17, and the smoke cavity 17 is in communication with the smoke outlet 14; and the oil separation part 15 is provided with an open port 16, so as to introduce smoke into the smoke cavity 17 through the open port 16.
[0049] In the technical scheme, the smoke outlet 14 is arranged at the top of the oil return device main body 11, and the smoke outlet 14 is used for discharging oil fume in the oil cavity 12; the oil separation part 15 is arranged on the smoke outlet 14, so as to block the lubricating oil when the lubricating oil rotates in the oil tank, prevent the lubricating oil from being sprayed out of the smoke outlet 14, avoid oil leakage at the smoke outlet 14, and enable the oil fume to be smoothly discharged from the smoke outlet 14 after entering the smoke cavity 17 through the open port 16, so as to balance the pressure in the oil cavity 12.
[0050] As shown in a feasible embodiment, Figure 1 and Figure 2 , the oil separation plate 151 and the connecting plate 152; the first end of the oil separation plate 151 is connected with the inner wall of the oil return device main body 11, the second end of the oil separation plate 151 extends in the first direction, and the oil separation plate 151 covers the smoke outlet 14; the connecting plate 152 is arranged perpendicular to the oil separation plate 151, the first end of the connecting plate 152 is connected with the inner wall of the oil return device main body 11, and the second end of the connecting plate 152 is connected with the oil separation plate 151.
[0051] In the technical scheme, the oil separation plate 151 extends in the direction in which the rotor rotates and is inclined towards the inside of the oil cavity 12, the oil separation plate 151 is fixed on the inner wall of the oil return device main body 11 through the two connecting plates 152 and encloses the smoke cavity 17 with the inner wall of the oil return device main body 11; the second end of the oil separation plate 151 is arranged to extend in the first direction, so that the lubricating oil is directly washed on the inner wall of the oil return device main body 11 under the guidance of the oil separation plate 151, thereby avoiding the lubricating oil from entering the smoke cavity 17, avoiding the smoke outlet being blocked, ensuring the smoothness and timeliness of smoke discharge, and preventing the pressure in the oil cavity 12 from being too large.
[0052] In some examples, the first direction is clockwise or counterclockwise. Specifically, as shown in a feasible embodiment, Figure 1 , the lubricating oil rotates clockwise in the oil cavity 12 along with the rotor, and when the lubricating oil passes through the oil separation plate 151, the lubricating oil flows from left to right, and the second end of the oil separation plate 151 extends in the first direction, that is, after the first end of the oil separation plate 151 is connected with the inner wall of the oil return device main body 11, the second end of the oil separation plate 151 extends to the right.
[0053] It can be understood that the second end of the oil separation plate 151 extending in the first direction means that the extending direction of the oil separation plate 151 is simplified as a ray, and the included angle between the direction of the ray and the angular velocity direction of the lubricating oil passing through the ray is less than 90 degrees.
[0054] As shown in Figure 1 and Figure 2 , in a feasible implementation, the smoke outlet 14 is arranged perpendicular to the axis of the oil returner body 11, the first end of the smoke outlet 14 is connected with the oil returner body 11, and the second end of the smoke outlet 14 extends away from the oil separation part 15.
[0055] In this technical solution, the second end of the smoke outlet 14 extends away from the oil returner body 11, so as to lengthen the smoke outlet 14 and make the outlet of the smoke outlet 14 away from the oil cavity 12, and the lubricating oil is blocked by the inner wall of the smoke outlet 14, so as to further reduce the occurrence of the lubricating oil spraying from the smoke outlet 14.
[0056] As shown in Figure 1 , in a feasible implementation, the smoke outlet 14 and the oil outlet 23 are located on the same radial line of the oil returner body 11.
[0057] In this technical solution, the straight line where the axes of the smoke outlet 14 and the oil outlet 23 are located is a radial line of the oil returner body 11, so that the smoke outlet 14 and the oil outlet 23 are respectively located at the two farthest positions on the oil returner body 11, avoiding the lubricating oil splashing into the smoke outlet 14 due to the fluctuation when the lubricating oil is discharged from the oil outlet 23, so as to further reduce the possibility of the lubricating oil spraying from the smoke outlet 14.
[0058] Further, as shown in Figure 2 , the oil outlet 23 and the smoke outlet 14 are located at the same axial position of the oil returner body 11, so that the oil returner structure is compact, and the resistance of the smoke gas flowing in the oil cavity 12 is reduced, avoiding the airflow short circuit in the oil cavity 12, affecting the smoke exhaust effect, and ensuring the smoke exhaust and oil discharge efficiency.
[0059] As shown in Figure 3 , in a feasible implementation, the oil leakage prevention oil returner further comprises a sealing groove 18 and a sealing part 19; the sealing groove 18 is arranged on the end face of the oil returner body 11; the sealing part 19 is elastic, at least part of the sealing part 19 is embedded in the sealing groove 18, the sealing part 19 is attached to an external structural member, and the external structural member is sealed and connected with the oil returner body 11 by extruding the sealing part 19.
[0060] In the technical scheme, the sealing groove 18 is arranged on the end surface of the oil return device main body 11 combined with the external structure, the sealing groove 18 is used for accommodating and fixing the sealing part 19, when the oil return device is combined and connected with the external structure, the sealing ring is compressed and deformed, the sealing ring is in contact with the end surface of the oil return device main body 11 and the fitting surface of the external structure at the same time, a seal is formed between the oil return device main body 11 and the external structure, thereby avoiding the lubricating oil from leaking from the end surface of the oil return device main body 11, and ensuring the sealing performance of the connection between the oil return device and the external structure.
[0061] Further, the sealing groove 18 and the corresponding sealing part 19 are arranged on the two end surfaces of the oil return device main body 11, so that the two sides of the oil return device main body 11 are sealed with the external structure, and the problem of lubricating oil leakage on the contact surfaces of the two sides of the oil return device main body 11 is avoided.
[0062] Specifically, the sealing part 19 is an O-shaped sealing ring, and the sealing groove 18 and the sealing part 19 are arranged on the end surface of the oil return device main body 11 along the circumferential direction of the oil return device main body 11, so as to ensure the sealing effect of the oil return device main body 11 and the external structure in the circumferential direction.
[0063] As shown in Figure 1 and Figure 2 , in a feasible implementation manner, the oil leakage prevention oil return device further comprises a first interface 20, the first interface 20 is arranged on the upper half of the oil return device main body 11, the first interface 20 is arranged along the radial direction of the oil return device main body 11, and the first interface 20 is in communication with the oil cavity 12.
[0064] In the technical scheme, the first interface 20 is arranged at the upper end of the oil return device main body 11, the first interface 20 is used for connecting a pressure gauge or a pressure sensor and the like, so as to monitor the pressure in the oil cavity 12, thereby facilitating judging whether the oil return system is normally operated and whether the pressure of the oil return system meets the design requirements through the pressure reading.
[0065] As shown in Figure 1 and Figure 2 , in a feasible implementation manner, the oil leakage prevention oil return device further comprises a second interface 21, the second interface 21 is arranged on the lower half of the oil return device main body 11, a first end of the second interface 21 is connected with the oil return device main body 11, the second interface 21 is arranged in a downward inclined manner, and the second interface 21 is in communication with the oil cavity 12.
[0066] In the technical scheme, the second interface 21 is arranged at the lower end of the oil return device main body 11, the second interface 21 is used for connecting a liquid level sensor or a liquid level gauge and the like, and the second interface 21 is arranged in a downward inclined manner, so as to facilitate dismounting, adjusting and mounting the liquid level monitoring device, and reduce the operation difficulty.
[0067] In the technical solution, the oil amount in the oil cavity 12 is quickly adjusted according to the monitoring of the oil level in the oil cavity 12, so that the overflow caused by excessive oil in the oil cavity 12 or the insufficient lubrication of the system caused by insufficient oil is avoided, and the safe and stable operation of the oil return system is maintained.
[0068] In some examples, as shown in Figure 1 , the second interface 21 is downwardly inclined, and the included angle a between the second interface 21 and the horizontal plane is 3-8°, so that the monitoring device can be inserted into the liquid surface and not contact the oil baffle 13, and the detection accuracy is ensured. As a preferred solution, a = 5°.
[0069] As shown in Figure 1 , in a feasible implementation, a threaded hole 22 is arranged on the second interface 21, and the threaded hole 22 is arranged along the axial direction of the second interface 21.
[0070] In the technical solution, the second interface 21 is arranged at the lower half of the oil return device main body 11, and the oil liquid can immerse the second interface 21. By arranging the threaded hole 22 in the second interface 21, the monitoring device and the second interface 21 can be tightly connected, so as to reduce the risk of leakage of lubricating oil from the second interface 21 to the outside of the oil return device main body 11.
[0071] Further, the threaded hole 22 can also be arranged in the first interface 20 to ensure the connection stability of the pressure monitoring device and the first interface 20.
[0072] In some examples, the first interface 20 and the second interface 21 are used to access the instrument line.
[0073] According to the second aspect of the present application, a lubricating system is provided, comprising the oil leakage prevention oil return device according to any one of the above technical solutions.
[0074] The lubricating system provided by the embodiments of the present application comprises the oil leakage prevention oil return device according to any one of the above technical solutions, so the lubricating system has all the beneficial effects of the oil leakage prevention oil return device according to the above technical solutions, which will not be repeated here.
[0075] It is easy for those skilled in the art to understand that the above advantageous modes can be freely combined and superimposed without conflict.
[0076] The above is only a preferred embodiment of the present application, and does not limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application. The above is only a preferred embodiment of the present application, and it should be pointed out that those skilled in the art can make several improvements and modifications without departing from the technical principles of the present application, and these improvements and modifications shall be regarded as the protection scope of the present application.
Claims
1. An oil leak-proof oil return device characterized by comprising: The oil leakage-proof oil return device comprises: an oil return device body, which is sealingly connected with an external structural member, and has an oil cavity inside, wherein a rotor is arranged in the oil cavity, the rotor rotates in a first direction in the oil cavity, and a rotation axis of the rotor is parallel to an axis of the oil return device body; an oil outlet is arranged on the oil return device body, and is in communication with the oil cavity, and the oil outlet is arranged perpendicularly to the axis of the oil return device body; an oil baffle, a first end of which is arranged on an inner wall of the oil return device body, and a second end of which extends away from the inner wall of the oil return device body, and the oil baffle covers the oil outlet; wherein the extending direction of the second end of the oil baffle is opposite to the first direction.
2. An oil leak back prevention device according to claim 1, wherein The oil leakage-proof oil return device further comprises: a smoke outlet, which is arranged on a top of the oil return device body, and is in communication with the oil cavity; an oil separation part, which is arranged inside the oil return device body, covers the smoke outlet, and is surrounded by the inner wall of the oil return device body to form a smoke cavity, the smoke cavity is in communication with the smoke outlet, and the oil separation part is provided with an opening for introducing smoke into the smoke cavity.
3. An oil leak prevention and return device according to claim 2, wherein The oil leakage-proof oil return device further comprises: an oil separation plate, a first end of which is connected with the inner wall of the oil return device body, and a second end of which extends in the first direction, and the oil separation plate covers the smoke outlet; a connecting plate, which is arranged perpendicularly to the oil separation plate, a first end of which is connected with the inner wall of the oil return device body, and a second end of which is connected with the oil separation plate.
4. The oil leakage-proof oil return device according to claim 2, wherein the smoke outlet is arranged perpendicularly to the axis of the oil return device body, a first end of the smoke outlet is connected with the oil return device body, and a second end of the smoke outlet extends away from the oil separation part.
5. The oil leakage-proof oil return device according to claim 3, wherein the smoke outlet and the oil outlet are located on the same radial line of the oil return device body.
6. An oil leak prevention oil return device according to claim 1, wherein The oil leakage-proof oil return device further comprises: a sealing groove, which is arranged on an end face of the oil return device body; a sealing part, which is elastic, at least part of the sealing part is embedded in the sealing groove, the sealing part is in close contact with the external structural member, and the external structural member is sealingly connected with the oil return device body by extruding the sealing part.
7. An oil leak prevention and return device according to claim 1, wherein The oil leakage-proof oil return device further comprises: a first interface, which is arranged on an upper half of the oil return device body, is arranged along a radial direction of the oil return device body, and is in communication with the oil cavity.
8. An oil leak prevention oil return device according to claim 1, characterized by The oil leakage-proof oil return device further comprises: a second interface, which is arranged on a lower half of the oil return device body, a first end of which is connected with the oil return device body, and which is arranged in a downward inclination, and is in communication with the oil cavity.
9. The oil leakage-proof oil return device according to claim 8, wherein A threaded hole is arranged on the second interface along the axial direction of the second interface.
10. A lubrication system characterized in that, The oil leakage prevention and return device comprises the oil leakage prevention and return device according to any one of claims 1-9.