Oil splashing prevention structure and oil-gas separator

Abstract

The utility model discloses an oil splashing prevention structure and an oil-gas separator. Wherein the oil splashing prevention structure comprises a partition plate and a protective cover, the partition plate is sunken inwards, a sleeve is arranged on the partition plate, and an oil outlet hole is formed in the connecting position of the sleeve and the partition plate; the oil outlet hole is communicated with the sleeve; a bearing is installed in the sleeve, the protective cover is installed on the sleeve, and a gap is reserved between the outer edge of the protective cover and the end face of the partition plate. The oil-gas separator comprises a shell and the oil splashing prevention structure. The oil-gas separation device has the beneficial effects that the steps on the partition plate can play a one-way flow guide role on oil, the blocking strip and the baffle on the protection cover can effectively prevent the oil on the partition plate from splashing to the gas outlet pipeline, and the separation efficiency of an oil-gas mixture is improved; and meanwhile, the air inlet opening in the air outlet pipe can be designed to be larger, and the exhaust efficiency of the machine can be improved.

Description

Technical Field

[0001] This application relates to the field of oil-gas separation technology, and in particular to an oil splash prevention structure and an oil-gas separator. Background Technology

[0002] An oil-gas separator is a machine that separates and discharges oil and gas from an oil-gas mixture. It is commonly used in environmental protection fields such as crankcase ventilation of automotive internal combustion engines. At present, oil-gas separators are mainly centrifugal oil-gas separators. Their working principle is to use multiple blades inside the shell to adsorb the oil-gas mixture, and then use centrifugal force to throw the oil out to the inner wall of the oil-gas separator to achieve the purpose of oil-gas separation. However, since the exhaust pipe is usually directly installed inside the shell, oil or oil-gas mixture can easily splash into the exhaust pipe under high-speed rotation, resulting in incomplete separation. Therefore, there is an urgent need for a structure that can prevent oil splashing.

[0003] The operation of a centrifugal oil-gas separator mainly relies on the rotation of blades driven by a shaft. Bearings are usually installed on the shaft to prevent it from shifting. The bearings need to be lubricated with oil during long-term operation. However, traditional oil-gas separators cannot lubricate the bearings while the machine is running, which can easily cause the bearings to wear during operation. Therefore, there is an urgent need for an oil-gas separator that can lubricate the bearings while the machine is running. Utility Model Content

[0004] One objective of this application is to provide an oil splash prevention structure that can solve at least one of the defects in the aforementioned background art.

[0005] To achieve at least one of the above objectives, the technical solution adopted in this application is as follows: an oil splash prevention structure, comprising a partition plate and a protective cover, wherein the partition plate is recessed inward, and a sleeve is provided at the lowest point of the partition plate; an oil outlet hole is provided at the connection between the sleeve and the partition plate, and the oil outlet hole is in communication with the sleeve; a bearing is installed inside the sleeve, and the protective cover is installed on the sleeve; a gap is left between the outer edge of the protective cover and the end face of the partition plate. This application improves the effective separation efficiency of the separator by providing a protective cover on the partition plate to prevent the separated oil from splashing inside the machine; in addition, the recessed structure of the partition plate not only guides the separated oil to flow more quickly to the oil outlet hole, but also blocks the oil flowing back into the sleeve.

[0006] Preferably, the protective cover is frustum-shaped and has an installation port; the installation port is inserted into the sleeve so that the protective cover is limited and installed in the sleeve; the installation port abuts against the upper end wall of the bearing. This arrangement allows the bearing to be limited by the pressing action of the partition plate and the protective cover, preventing bearing deflection during machine operation and thus avoiding disruption to machine operation.

[0007] Preferably, the protective cover is provided with a blocking strip and a baffle. The blocking strip is disposed between the mounting port and the baffle. The blocking strip extends towards the oil outlet, and part of the blocking strip blocks the oil outlet. The baffle is inclined close to the partition plate. This arrangement can prevent oil in the sleeve from splashing directly from the oil outlet to outside the protective cover due to machine shaking.

[0008] Preferably, there are multiple oil outlet holes, which are evenly distributed along the circumference of the sleeve. This arrangement can further improve the oil discharge efficiency of the machine, allowing the separated oil to enter the sleeve from all directions.

[0009] Preferably, a support rib is provided between two adjacent oil outlet holes; one end of the support rib is located on the outer wall of the sleeve, and the other end extends away from the sleeve. This arrangement can support the sleeve and increase its structural strength, preventing deformation of the sleeve structure due to prolonged machine operation.

[0010] Preferably, the partition plate is provided with a mounting portion, and a rotating shaft is mounted on the mounting portion; the mounting portion is provided with a stepped groove, and a drive impeller is mounted on the rotating shaft. The drive impeller is provided with a protrusion, which cooperates with the stepped groove to form a curved seal. With this configuration, when the oil in the sleeve flows within the gap of the curved seal, it will reverse and block the oil in the lower drive chamber, preventing the oil in the drive chamber from entering the separation chamber due to pressure difference, thus avoiding a decrease in separation efficiency.

[0011] Preferably, the rotating shaft has a through hole inside, and a perforation communicating with the through hole is provided on the side wall of the rotating shaft, with the perforation located near the upper end of the bearing. This arrangement reduces the difficulty of bearing lubrication; during machine operation, a large amount of oil mist is generated in the lower part of the rotating shaft. The oil mist first enters the rotating shaft through the through hole, and then is discharged to the bearing through the perforation for lubrication.

[0012] Another objective of this application is to provide an oil-gas separator that can solve at least one of the defects in the aforementioned background technology.

[0013] To achieve at least one of the above objectives, the technical solution adopted in this application is as follows: an oil-gas separator, comprising a housing and the aforementioned oil splash prevention structure; the separator plate is installed on the housing, and a centrifugal separation component is installed inside the housing, the separation component being fixedly connected to the rotating shaft. With this configuration, the separation component can be driven to rotate by the rotating shaft, enabling efficient separation of the oil and gas mixture under centrifugal force.

[0014] Preferably, an air inlet pipe is provided above the separation component, and the air inlet pipe is connected to the separation component. An air outlet pipe is provided below the separation component, and the opening of the air outlet pipe is away from the oil splash prevention structure. With this configuration, the oil-gas mixture can directly enter the separation component through the air inlet pipe for centrifugation; the separated oil flows to the separator plate under gravity and is discharged to the outside, while the separated gas enters the air outlet pipe for discharge under air pressure.

[0015] Preferably, an oil injection assembly is installed at the lower part of the housing, and the oil injection nozzle on the oil injection assembly is aligned with the drive impeller. With this configuration, the rotating shaft can be driven to rotate by spraying oil onto the drive impeller through the oil injection assembly.

[0016] Compared with the prior art, the beneficial effects of this application are as follows:

[0017] The separator plate is designed with a concave structure, giving it a unidirectional flow guidance function. Separated oil can enter the sleeve through the oil outlet under gravity, while the oil in the sleeve can be discharged through the gap in the curved seal, preventing oil from the lower drive chamber from entering the separation chamber and improving the separator plate's sealing performance. Oil mist generated during machine operation can flow into the bearings through perforations on the shaft, reducing the difficulty of bearing lubrication. As long as the machine is running, oil mist is continuously delivered to the bearings for lubrication.

[0018] The protective cover is installed above the partition plate. The blocking strip can further prevent the backflow of oil in the sleeve, while the baffle can block the splashing oil, thus preventing the separated oil from splashing into the vent pipe and causing pollution. Since the protective cover blocks the splashing oil, the opening of the vent pipe can be enlarged, thereby improving the venting efficiency of the separator. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this application.

[0020] Figure 2 for Figure 1 A magnified schematic diagram of part A in the middle.

[0021] Figure 3 This is a schematic diagram of the partition plate in this application.

[0022] Figure 4 This is a schematic diagram of the structure of the protective cover in this application.

[0023] Figure 5 This is a schematic diagram of the internal structure of the oil-gas separator in this application.

[0024] In the diagram: 1. Separator plate; 11. Sleeve; 12. Oil outlet; 13. Support rib; 14. Mounting part; 140. Stepped groove; 100. Bearing; 2. Protective cover; 21. Mounting port; 22. Plug; 23. Baffle; 200. Separation assembly; 3. Rotating shaft; 31. Drive impeller; 32. Perforation; 310. Protrusion; 4. Housing; 41. Air outlet pipe; 42. Air inlet pipe; 43. Oil injection assembly. Detailed Implementation

[0025] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0026] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this application.

[0027] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0028] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0029] One aspect of this application provides an oil splash-proof structure, such as Figure 1 , Figure 2 and Figure 3As shown, one preferred embodiment includes a separator plate 1 and a protective cover 2. The end face of the separator plate 1 is recessed inward so that the separated oil flows downward along the end face of the separator plate 1. A sleeve 11 is provided at the center of the separator plate 1, and the axis of the sleeve 11 coincides with the axis of the separator plate 1. An oil outlet hole 12 is provided at the connection between the sleeve 11 and the separator plate 1. A bearing 100 is installed inside the sleeve 11 for limiting, and the protective cover 2 is installed on the sleeve 11. The bearing 100 can be limited by a snap-fit ​​or by the protective cover 2 and the sleeve 11 pressing against the bearing 100 for limiting. A gap is left between the outer edge of the protective cover 2 and the end face of the separator plate 1 so that the oil on the separator plate 1 can flow through this gap to the oil outlet hole 12.

[0030] It is understandable that setting the partition plate 1 to a concave structure can, on the one hand, guide the oil on the partition plate 1 so that the oil flows more quickly to the oil outlet 12, and on the other hand, it can also block the oil flowing back from the sleeve 11 to the partition plate 1.

[0031] It should be noted that the oil-gas separator itself will vibrate during operation. The protective cover 2 in this application can be used to block the oil splashed out due to machine vibration, thus preventing the oil and gas from mixing again.

[0032] Specifically, such as Figure 2 and Figure 4 As shown, the protective cover 2 is frustum-shaped and has an installation port 21. The outer diameter of the installation port 21 is smaller than the inner diameter of the sleeve 11. The installation port 21 is inserted into the sleeve 11 and abuts against the upper end wall of the bearing 100 to limit the bearing 100, thereby preventing the bearing 100 from shifting due to machine vibration and further improving the stability of machine operation.

[0033] It is understandable that, in order to make the connection between the mounting port 21 and the sleeve 11 more stable, the mounting port 21 and the sleeve 11 can be fixed by means of threads or mutually cooperating snaps.

[0034] Furthermore, such as Figure 1 and Figure 4As shown, the protective cover 2 is equipped with a blocking strip 22 and a baffle 23. The blocking strip 22 is positioned between the mounting port 21 and the baffle 23, extending towards the oil outlet 12 to partially block it. When the oil in the sleeve 11 flows back due to machine vibration, most of the oil will collide with the blocking strip 22 and return to the sleeve 11, thus reducing the backflow rate. The baffle 23 is tilted close to the partition plate 1, with one end of the baffle 23 engaging with the end face of the partition plate 1 to form a gap. When oil splashes between the baffle 23 and the blocking strip 22, the baffle 23 can block it, preventing the oil from splashing directly into the vent pipe 41 and causing contamination. Additionally, tilting the baffle 23 towards the partition plate 1 allows oil splashed onto the baffle 23 to slide down the slope onto the partition plate 1 and flow back to the oil outlet 12.

[0035] In this embodiment, as Figure 3 As shown, there are multiple oil outlet holes 12, which are evenly distributed along the periphery of the sleeve 11; the oil on the partition plate 1 can enter the sleeve 11 from all directions, further improving the oil discharge efficiency of the machine.

[0036] It should be noted that since the oil outlet 12 is directly located at the connection between the partition plate 1 and the sleeve 11, the connection point between the sleeve 11 and the partition plate 1 is relatively fragile, and long-term use may cause the connection point between the sleeve 11 and the partition plate 1 to break.

[0037] Therefore, in some embodiments of this application, a support rib 13 is provided between two adjacent oil outlet holes 12; one end of the support rib 13 is located on the outer side of the sleeve 11, and the other end extends away from the sleeve 11. The support rib 13 can strengthen the connection between the sleeve 11 and the partition plate 1, so that the sleeve 11 can withstand higher working strength.

[0038] In this embodiment, as Figure 1 and Figure 2 As shown, a mounting part 14 is provided on the partition plate 1, and a rotating shaft 3 is rotatably mounted on the mounting part 14. The rotating shaft 3 is inserted into the bearing 100. A stepped groove 140 is provided on the mounting part 14, and a drive impeller 31 is mounted on the rotating shaft 3. A protrusion 310 adapted to the stepped groove 140 is provided on the drive impeller 31. The protrusion 310 and the stepped groove 140 cooperate to form a curved seal for transmitting oil. When oil passes through the gap between the protrusion 310 and the stepped groove 140, a sealing effect is generated, preventing the oil in the lower drive chamber from passing through the curved seal.

[0039] Furthermore, such as Figure 2As shown, the rotating shaft 3 has a through hole inside, and the side wall of the rotating shaft 3 has a through hole 32 communicating with the through hole; when the rotating shaft 3 is inserted into the bearing 100, the through hole 32 is close to the upper end of the bearing 100. During machine operation, a large amount of oil mist will be generated in the lower part of the rotating shaft 3. The oil mist enters the rotating shaft 3 through the through hole, and then reaches the rotating shaft 3 through the through hole 32 for lubrication, thereby reducing the lubrication difficulty of the bearing 100 and ensuring that the rotating shaft 3 can continuously provide oil for lubrication of the bearing 100 during rotation.

[0040] Another aspect of the application provides an oil-gas separator, such as Figure 1 and Figure 5 As shown, one preferred embodiment includes a housing 4 and the aforementioned oil splash prevention structure; a partition plate 1 is installed inside the housing 4, and a separation component 200 for separating oil-gas mixture is installed inside the housing 4. The separation component 200 is fixedly connected to the rotating shaft 3; when the rotating shaft 3 rotates, it can synchronously drive the separation component 200 to rotate, so that the oil-gas mixture can achieve efficient separation of oil and gas under the action of centrifugal force.

[0041] Specifically, such as Figure 1 and Figure 5 As shown, an air inlet pipe 42 is installed above the separation component 200, and the air inlet pipe 42 is connected to the separation component 200. An air outlet pipe 41 is provided below the separation component 200, and the opening of the air inlet end of the air outlet pipe 41 is away from the protective cover 2. When the oil-gas separator is running, the oil-gas mixture enters the separation component 200 directly through the air inlet pipe 42 and is separated into oil and gas. The separated oil slides down from the shell 4 onto the partition plate 1 under the action of gravity and is discharged, while the separated gas enters the air outlet pipe 41 under the action of air pressure and is discharged.

[0042] Understandably, the protective cover 2 can prevent splashed oil from entering the vent pipe 41, thus increasing the opening of the vent pipe 41 and further improving the venting efficiency of the vent pipe 41.

[0043] In this implementation, such as Figure 1 As shown, an oil spraying assembly 43 is installed on the lower part of the housing 4, and the oil spraying nozzle of the oil spraying assembly 43 is aligned with the drive impeller 31. By spraying oil onto the drive impeller 31 through the oil spraying assembly 43, the rotating shaft 3 can be driven to rotate the separation assembly 200, and the sprayed oil mist enters the rotating shaft 3 through the through hole to lubricate the bearing 100.

[0044] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. An oil splash prevention structure, comprising a partition plate (1) and a protective cover (2), characterized in that, The partition plate (1) is recessed inward, and a sleeve (11) is provided at the lowest point of the partition plate (1); an oil outlet (12) is provided at the connection between the sleeve (11) and the partition plate (1), and the oil outlet (12) is connected to the sleeve (11); a bearing (100) is installed inside the sleeve (11), and a protective cover (2) is installed on the sleeve (11), with a gap between the outer edge of the protective cover (2) and the end face of the partition plate (1).

2. The oil splash prevention structure as described in claim 1, characterized in that, The protective cover (2) is frustum-shaped and has an installation port (21). The installation port (21) is inserted into the sleeve (11) so that the protective cover (2) is limited and installed on the sleeve (11). The installation port (21) abuts against the upper wall of the bearing (100).

3. The oil splash prevention structure as described in claim 2, characterized in that, The protective cover (2) is provided with a blocking strip (22) and a baffle (23). The blocking strip (22) is located between the mounting port (21) and the baffle (23). The blocking strip (22) extends towards the oil outlet (12), and part of the blocking strip (22) blocks the oil outlet (12). The baffle (23) is inclined close to the partition plate (1).

4. The oil splash prevention structure as described in claim 3, characterized in that, The number of oil outlet holes (12) is multiple, and the multiple oil outlet holes (12) are evenly distributed along the periphery of the sleeve (11).

5. The oil splash prevention structure as described in claim 4, characterized in that, A support rib (13) is provided between two adjacent oil outlet holes (12); one end of the support rib (13) is provided on the outer side wall of the sleeve (11), and the other end extends away from the sleeve (11).

6. The oil splash prevention structure as described in claim 1, characterized in that, The partition plate (1) is provided with a mounting part (14), and a rotating shaft (3) is mounted on the mounting part (14); the mounting part (14) is provided with a stepped groove (140), and a drive impeller (31) is mounted on the rotating shaft (3). The drive impeller (31) is provided with a protrusion (310) that is adapted to the stepped groove (140), and the protrusion (310) and the stepped groove (140) cooperate to form a curved seal.

7. The oil splash prevention structure as described in claim 6, characterized in that, The shaft (3) has a through hole inside, and the side wall of the shaft (3) has a through hole (32) that communicates with the through hole. The through hole (32) is close to the upper end of the bearing (100).

8. An oil-gas separator, characterized in that, The device includes a housing (4) and an oil splash prevention structure as described in any one of claims 1-7, wherein the partition plate (1) is installed on the housing (4), and a separation component (200) for centrifugation is installed inside the housing (4), and the separation component (200) is fixedly connected to the rotating shaft (3).

9. The oil-gas separator as described in claim 8, characterized in that, An air inlet pipe (42) is provided above the separation component (200), and the air inlet pipe (42) is connected to the separation component (200). An air outlet pipe (41) is provided below the separation component (200), and the air inlet of the air outlet pipe (41) is far away from the protective cover (2).

10. The oil-gas separator as described in claim 8, characterized in that, The lower part of the housing (4) is equipped with an oil injection assembly (43), and the oil injection port on the oil injection assembly (43) is aligned with the drive impeller (31).

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