Oil-gas separation device of engine

Abstract

The invention relates to an engine oil-gas separation device, and relates to the field of engine oil-gas separation, the engine oil-gas separation device comprises a separation box body, an oil filtering assembly and a first oil removing assembly, the separation box body is hollow; the separation box body is communicated with a feeding pipe, a gas outlet pipe and an oil outlet pipe; the oil filtering assembly comprises a plurality of oil filtering columns; the oil filtering column is fixedly connected into the separation box body and is parallel to the first direction; the multiple oil filtering columns are distributed in the virtual circumferential direction at intervals, and an oil filtering gap is formed between every two adjacent oil filtering columns. The first oil removing assembly comprises a first scraping ring and a linear driving assembly, the first scraping ring is connected to the oil filtering column in a sleeving mode, the avoiding gap is used for containing the first scraping ring, and the first scraping ring is slidably connected to the oil filtering column in the first direction; the linear driving assembly is connected between the first deoiling assembly and the separation box body so as to drive the first scraping ring to slide in the first direction. The oil-gas separation device has the effect that the filtering structure is convenient to clean to ensure the oil-gas separation efficiency.

Description

Technical Field

[0001] This application relates to the field of engine oil and gas separation, and in particular, to an engine oil and gas separation device. Background Art

[0002] Engine oil and gas separation devices are widely used in various mechanical equipment, especially in the field of internal combustion engines. Their main function is to effectively separate the mixed oil and gas generated by the crankcase ventilation system. Such devices are of great significance for environmental protection, improving engine performance, and extending the service life of lubricating oil.

[0003] Traditional engine oil and gas separation methods mainly include various forms such as gravity sedimentation, centrifugal separation, and filtration medium interception. Among them, gravity sedimentation usually relies on the principle of natural sedimentation to achieve the preliminary separation of solid-liquid two phases; centrifugal separation uses the inertial force generated by high-speed rotation to complete a more refined material stratification process; as for the filtration method, it mostly blocks larger particle pollutants from crossing the boundary by setting physical barriers such as sieves or fiber layers of specific materials and specifications to achieve the purification purpose.

[0004] However, the above-mentioned conventional technical means generally have a key shortcoming that it is difficult to completely remove the excess liquid components accumulated on the surface of the filter material. Especially when the operation cycle is extended, it is easy to cause frequent blockage phenomena, thus affecting the overall working efficiency. Therefore, providing an oil and gas separation device that can clean the filtration structure is an urgent problem to be solved. Summary of the Invention

[0005] In order to facilitate cleaning of the filtration structure to ensure the oil and gas separation efficiency, this application provides an engine oil and gas separation device.

[0006] The engine oil and gas separation device provided by this application adopts the following technical solution: An engine oil and gas separation device, comprising: A separation box body, which is hollow inside; a feed pipe, an outlet pipe, and an oil outlet pipe are connected to the separation box body; and, An oil filtering assembly, which includes a plurality of oil filtering columns; The oil filtering columns are fixedly connected inside the separation box body, and the oil filtering columns are parallel to the first direction; The plurality of oil filtering columns are spaced apart in the circumferential direction of a virtual circle. The central axis of the virtual circle is parallel to the first direction. An oil filtering gap is formed between adjacent two oil filtering columns; a clearance is formed between one end of the oil filtering column away from the central axis of the virtual circle and the inner wall of the separation box body; It further includes: A first oil removal assembly, the first oil removal assembly includes: The first scraping ring, the first scraping ring is sleeved on the oil filtering column, the avoiding gap is used to accommodate the first scraping ring, and the first scraping ring is slidably connected to the oil filtering column along a first direction; and, A linear driving assembly, the linear driving assembly is connected between the first oil removing assembly and the separation box body to drive the first scraping ring to slide along the first direction.

[0007] By adopting the above technical solution, the effective separation of engine oil and gas is realized. Specifically, by arranging a plurality of oil filtering columns in the hollow separation box body and forming an oil filtering gap between the oil filtering columns, the contact area between the oil and gas and the solid structure can be effectively increased, and the oil and gas separation efficiency can be improved. At the same time, the added first scraping ring can slide along the first direction under the action of the linear driving assembly, so as to clean the oil attached to the oil filtering column in time, avoid the problem that the oil filtering gap becomes smaller due to too thick oil layer, ensure the stability of long-term use, and ensure the filtering efficiency after cleaning the filter screen.

[0008] Optionally, the first oil removing assembly further includes: A second scraping ring, the outer peripheral wall of the second scraping ring is in contact with the inner peripheral side wall of the separation box body, and the first scraping ring is fixedly connected to the second scraping ring.

[0009] By adopting the above technical solution, the addition of the second scraping ring enables the first scraping ring to not only remove the oil on the oil filtering column but also remove the oil attached to the inner peripheral wall of the separation box body during the sliding process along the first direction. This design improves the cleaning efficiency and effect of the whole device, ensures the cleanliness of the environment inside the separation box body, and thus improves the overall performance of oil and gas separation.

[0010] Optionally, it further includes a plurality of auxiliary oil removing assemblies, and the auxiliary oil removing assemblies include: A sliding bar, the mutually approaching wall surfaces of two adjacent oil filtering columns are opening surfaces, and the opening surfaces are perpendicular to a second direction; the sliding bar is provided with a jack on the opening surface, at least one end of the sliding bar is located in the jack, and the sliding bar can slide in the jack along the second direction so as to adjust the sliding bar between an oil filtering posture and a storage posture; When the sliding bar is in the storage posture, the sliding bar is completely located in the jack, and one end wall of the sliding bar is coplanar with the opening surface; When the sliding bar is in the oil filtering posture, one end of the sliding bar is located in the jack and the other end is located in the oil filtering gap; The auxiliary oil removing assembly further includes: An elastic member, the elastic member is fixedly connected between the sliding bar and the oil filtering column; when the elastic member is in a recoverable deformation state, it has a force to drive the sliding bar to adjust from the storage posture to the oil filtering posture.

[0011] By adopting the above technical solution, the sliding bar can extend within the oil filtering gap, increasing the oil adhesion area in the oil and gas, thereby improving the oil and gas separation effect. At the same time, the design of the elastic member enables the sliding bar to automatically switch from the storage posture to the oil filtering posture without external power, simplifying the operation process. When cleaning is required, the sliding bar can be retracted into the jack, facilitating the centralized removal of the oil stains attached to its surface, improving the overall cleaning efficiency and maintenance convenience of the device.

[0012] Optionally, a plurality of sliding bars are respectively provided on each corresponding opening surface of the oil filtering column, and the plurality of sliding bars are spaced apart in the first direction; in the first direction, the sliding bars on adjacent two opening surfaces are staggered.

[0013] By adopting the above technical solution, the sliding bars are arranged at intervals in the first direction on the opening surface of the oil filtering column, and the sliding bars on adjacent two opening surfaces are staggered, avoiding the sliding bars on two opening surfaces of the same oil filtering column being at the same depth, so that there is only one oil filtering column at each depth. Compared with the situation where there are two oil filtering columns at the same depth, the width of the oil filtering column does not need to be set too long to realize the storage of the sliding bar.

[0014] Optionally, when the sliding bar is in the oil filtering posture, the orthographic projections of the two columns of sliding bars located in the oil filtering gap in a direction perpendicular to the first direction form an insertion gap in the second direction; A driving block is fixedly connected to the first scraping ring, and both side walls of the driving block are in contact with one of the opening surfaces; In the first direction, the middle part of the driving block is a scraping section, and both ends of the driving block are insertion ends for inserting into the insertion gap; The dimension of the driving block in the second direction is the width of the driving block, and the width of the driving block gradually decreases towards the insertion end.

[0015] By adopting the above technical solution, the insertion gap formed by the sliding bar in the oil filtering posture can provide an accurate guiding space for the insertion end of the driving block, ensuring that the driving block acts on the sliding bar accurately during the movement of the first scraping ring.

[0016] Optionally, the oil filtering column is provided with an embedding groove at the opening of the jack, the embedding groove penetrates through the opening surface, and a flexible washer is embedded in the embedding groove; the flexible washer is clamped between the sliding bar and the peripheral wall of the embedding groove, and the flexible washer is in a compressed state.

[0017] By adopting the above technical solution, when the slider slides in the jack along the second direction, the flexible washer will exert a squeezing force on the slider. This design can effectively scrape off the oil adhering to the surface of the slider, ensuring that the slider remains clean during the switching process between the storage posture and the oil filtering posture, thereby improving the oil-gas separation efficiency and long-term operation stability of the entire device.

[0018] Optionally, one end of the separation box body is an open end, and the other end is a sealed end; a cover body is provided at the open end of the separation box body.

[0019] By adopting the above technical solution, one end of the separation box body is designed as an open end and provided with a cover body, which is convenient for performing maintenance operations on the interior of the separation box body. Specifically, when it is necessary to maintain or clean the oil filtering component and other parts, the interior space of the separation box body can be easily accessed by opening the cover body, thereby improving the operation convenience and reducing the maintenance time.

[0020] Optionally, the linear drive assembly includes: A screw rod, the screw rod is parallel to the first direction, the screw rod passes through one of the first scraping rings, and the screw rod is threadedly connected to the first scraping ring; A rotating shaft, the rotating shaft is parallel to the first direction, and passes through the end wall of the sealed end of the separation box body along the first direction and is coaxially fixedly connected to the screw rod; the rotating shaft is rotatably connected to the separation box body around its own central axis.

[0021] By adopting the above technical solution, the threaded connection and cooperation between the screw rod and the first scraping ring enable the screw rod to drive the first scraping ring to move accurately and stably along the first direction when rotating, thereby effectively scraping off the oil stains on the oil filtering column; the design of the rotating shaft facilitates the operator to control the entire oil removal process through a simple rotation action, improving the convenience and reliability of the device use.

[0022] Optionally, a brush in contact with the oil filtering column is fixedly connected to the first scraping ring.

[0023] By adopting the above technical solution, fixedly connecting a brush to the first scraping ring can increase the friction force between the first scraping ring and the oil filtering column, so as to more effectively remove the oil stains adhering to the surface of the oil filtering column when the first scraping ring slides along the first direction. At the same time, the presence of the brush can also penetrate into the fine depressions on the surface of the oil filtering column, further improving the cleaning efficiency.

[0024] Optionally, in the first direction, the thickness of the second scraping ring gradually decreases towards both ends.

[0025] By adopting the above technical solution, the thickness of the second scraping ring gradually decreases towards both ends in the first direction, enabling the second scraping ring to more effectively remove the oil stains adhering to the inner wall during the process of sliding along the inner wall of the separation box body.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. By providing a plurality of oil filtering columns and a first oil removal component, and using the first scraping ring to slide along the first direction to remove the oil adhering to the surface of the oil filtering column, the problem of blockage of the traditional filter screen caused by long-term use is solved, and the oil-gas separation efficiency and the working stability of the device are improved; 2. The sliding bar in the auxiliary oil removal component can automatically switch to the oil filtering posture or the storage posture under the action of the elastic member, which not only increases the oil-gas filtering area but also facilitates cleaning, and further improves the filtering ability and self-cleaning ability of the separation device; 3. The linear drive component adopts the design of matching a screw rod with a rotating shaft, which realizes the precise control of the position of the first scraping ring while simplifying the operation process, and is convenient for users to perform regular maintenance to ensure the continuous and efficient operation of the equipment. Description of the Drawings

[0027] Figure 1 is a schematic structural diagram of a separation box body and a cover body in an embodiment of the present application; Figure 2 is a schematic structural diagram of an oil filtering component in an embodiment of the present application; Figure 3 is a schematic structural diagram of an auxiliary oil removal component in an embodiment of the present application; Figure 4 is a schematic structural diagram of an oil filtering column in an embodiment of the present application; Figure 5 is Figure 4 an enlarged view of part A in; Figure 6 is a schematic structural diagram of an oil filtering column and a sliding bar in an embodiment of the present application; Figure 7 is a schematic structural diagram of a driving block in an embodiment of the present application.

[0028] Description of the reference numerals: 1, separation box body; 11, sealing end; 12, open end; 13, cover body; 14, feed pipe; 15, gas outlet pipe; 16, oil outlet pipe; 2, oil filtering component; 21, oil filtering column; 211, opening surface; 212, jack; 213, groove; 214, flexible gasket; 22, avoidance gap; 23, oil filtering gap; 3, first oil removal component; 31, first scraping ring; 311, brush; 32, second scraping ring; 33, linear drive component; 331, screw rod; 332, rotating shaft; 4, auxiliary oil removal component; 41, sliding bar; 411, insertion gap; 42, elastic member; 5, driving block; 51, scraping section; 52, insertion end. Detailed Description of the Embodiment

[0029] The following further describes the present application in detail Figures 1 - 7 with reference to the attached drawings.

[0030] An embodiment of the present application discloses an engine oil-gas separation device. Refer to Figure 1 , the engine oil-gas separation device includes a separation box body 1 provided in a hollow manner. The inner cavity of the separation box body 1 is cylindrical, and the depth direction of the separation box body 1 is the first direction; the separation box body 1 has a sealed end 11 and an open end 12, and a cover body 13 is provided on the open end 12. After the cover body 13 is opened, maintenance operations can be carried out on the inside of the separation box body 1; A feed pipe 14, an air outlet pipe 15 and an oil outlet pipe 16 are fixedly connected to the separation box body 1. The feed pipe 14 is close to the sealed end 11 of the separation box body 1 and is used for supplying oil and gas to enter; the air outlet pipe 15 is located at the open end 12 of the separation box body 1 and is used for discharging the filtered gas. In the present disclosure, the air outlet pipe 15 is located on the cover body 13 at the open end 12; the oil outlet pipe 16 is located on the end wall of the sealed end 11 of the separation box body 1, and the filtered oil can be discharged from the oil outlet pipe 16.

[0031] Refer to Figure 1 and Figure 2 , a filter oil assembly 2 is provided in the separation box body 1. The filter oil assembly 2 includes a plurality of filter oil columns 21. The filter oil columns 21 are parallel to the first direction. The filter oil columns 21 are fixedly connected to the separation box body 1, specifically, fixedly connected to the end wall of the sealed end 11 of the separation box body 1. A clearance 22 for accommodating other components is formed between one end of the filter oil column 21 far from the central axis of the virtual circle and the inner wall of the separation box body 1; the plurality of filter oil columns 21 are spaced apart in the virtual circumferential direction. The central axis of the virtual circle is parallel to the first direction, and a filter oil clearance 23 is formed between two adjacent filter oil columns 21 for the oil and gas to pass through; During use, the oil and gas are sent into the separation box body 1 through the feed pipe 14, the gas can be discharged from the air outlet pipe 15, the oil adheres to the filter oil columns 21, and part of the oil can fall down along the filter oil columns 21 to the sealed end 11 of the separation box body 1 and finally be discharged from the oil outlet pipe 16.

[0032] Refer to Figure 1 , Figure 2 and Figure 3 , in order to make the oil fall from the filter oil columns 21 more thoroughly, the present application further includes a first oil removal assembly 3. The first oil removal assembly 3 includes a first scraping ring 31, a second scraping ring 32 and a linear driving assembly 33. The first scraping ring 31 is sleeved on the filter oil column 21. The clearance 22 is used for accommodating the first scraping ring 31. The first scraping ring 31 is slidably connected to the filter oil column 21 in the first direction. During the process of the first scraping ring 31 sliding in the first direction, the oil adhering to the filter oil column 21 can be scraped off; the linear driving assembly 33 is connected between the first oil removal assembly 3 and the separation box body 1 to drive the first scraping ring 31 to slide in the first direction; a brush 311 in contact with the filter oil column 21 is fixedly connected to the first scraping ring 31 to clean the filter oil column 21 more thoroughly; The outer peripheral wall of the second scraping ring 32 contacts the inner peripheral side wall of the separation box body 1, and the first scraping ring 31 is fixedly connected to the second scraping ring 32 so that the second scraping ring 32 and the plurality of first scraping rings 31 can move synchronously in the first direction; in some embodiments, in the first direction, the thickness of the second scraping ring 32 gradually decreases towards both ends, so as to facilitate the second scraping ring 32 to clean the oil attached to the inner peripheral wall of the separation box body 1 more thoroughly; In some embodiments, the linear drive assembly 33 includes a screw 331 and a rotating shaft 332. The screw 331 is parallel to the first direction. The screw 331 passes through one of the first scraping rings 31, and the screw 331 is threadedly connected to the first scraping ring 31; the rotating shaft 332 is parallel to the first direction and coaxially fixedly connected to the screw 331 after passing through the end wall of the sealing end 11 of the separation box body 1 along the first direction; the rotating shaft 332 is rotatably connected to the separation box body 1 around its own central axis; during operation, only by rotating the rotating shaft 332, the screw 331 can be driven to rotate synchronously, and the screw 331 will drive the first scraping ring 31 and the second scraping ring 32 to move synchronously in the first direction to scrape the oil attached to the oil filtering column 21.

[0033] Refer to Figure 4 、 Figure 5 and Figure 6 In some embodiments of the present application, it further includes a plurality of auxiliary oil removal components 4. The auxiliary oil removal components 4 include sliding strips 41; in order to install the sliding strips 41, the mutually adjacent walls of the two oil filtering columns 21 are open-hole surfaces 211. The sliding strips 41 are provided with jacks 212 on the open-hole surfaces 211. At least one end of the sliding strips 41 is located in the jacks 212 and can slide in the jacks 212 along the second direction, so that the sliding strips 41 can be adjusted between the oil filtering posture and the storage posture; the second direction is the tangential direction of the virtual circle, and the open-hole surfaces 211 are perpendicular to the second direction; When the sliding strip 41 is in the storage posture, the sliding strip 41 is completely located in the jack 212, and one end wall of the sliding strip 41 is coplanar with the open-hole surface 211; When the sliding strip 41 is in the oil filtering posture, one end of the sliding strip 41 is located in the jack 212, and the other end is located in the oil filtering gap 23; When the sliding strip 41 is located in the oil filtering gap 23, the oil in the oil and gas can adhere to the sliding strip 41 to improve the filtering effect of the oil and gas; when it is necessary to clean the sliding strip 41, only by driving the sliding strip 41 from the oil filtering posture to the storage posture, the oil attached to the sliding strip 41 can be scraped off; In some embodiments, a plurality of jacks 212 are spaced apart along a first direction on each opening surface 211 of the oil filtering column 21. A corresponding sliding bar 41 is disposed in each jack 212. In the first direction, the sliding bars 41 on two adjacent opening surfaces 211 are staggered; when the sliding bar 41 is in the oil filtering posture, a plugging gap 411 is formed in the second direction in the orthographic projection of two columns of sliding bars 41 located in the oil filtering gap 23 perpendicular to the first direction; In some embodiments, in order to clean the oil attached to the sliding bar 41 more thoroughly, the oil filtering column 21 is provided with an embedding groove 213 at the opening of the jack 212. The embedding groove 213 penetrates the opening surface 211. A flexible gasket 214 is embedded in the embedding groove 213. The flexible gasket 214 is clamped between the sliding bar 41 and the peripheral wall of the embedding groove 213, and the flexible gasket 214 is in a compressed state. During the sliding process of the sliding bar 41, the grease can be scraped off by the flexible gasket 214; The auxiliary oil removal assembly 4 further includes an elastic member 42. The elastic member 42 is located in the jack 212, and one end of the elastic member 42 is fixedly connected to the sliding bar 41, and the other end is fixedly connected to the oil filtering column 21; when the elastic member 42 is in a recoverable deformation state, it has a force to drive the sliding bar 41 to adjust from the storage posture to the oil filtering posture; the elastic member 42 in the present disclosure is a compression spring. When the sliding bar 41 is in the storage posture, the compression spring is in a compressible state with recoverable deformation, storing a force to drive the sliding bar 41 to adjust from the storage posture to the oil filtering posture.

[0034] Refer to Figure 7 To drive the sliding bar 41 to move into the jack 212, a driving block 5 is fixedly connected to the first scraping ring 31. Two side walls of the driving block 5 are each in contact with an opening surface 211. During the movement of the first scraping ring 31 along the first direction, the driving block 5 moves synchronously with the first scraping ring 31, and the driving block 5 can also scrape off a part of the oil on the surface of the oil filtering column 21; in the first direction, the middle part of the driving block 5 is a scraping section 51, and both ends of the driving block 5 are insertion ends 52 for inserting into the plugging gap 411; the dimension of the driving block 5 in the second direction is the width of the driving block 5, and the width of the driving block 5 gradually decreases from the scraping section 51 to the insertion end 52, so as to facilitate the insertion of the insertion end 52 into the plugging gap 411. After the insertion section enters the plugging gap 411, as the driving block 5 moves in the first direction, after the driving block 5 contacts the sliding bar 41, as the driving block 5 moves, the driving block 5 can push the sliding bar 41 to move from the oil filtering posture to the storage posture.

[0035] The implementation principle of an engine oil-gas separation device in an embodiment of the present application is as follows: After the oil-gas is sent into the separation box body 1, the oil will adhere to the oil filtering column 21 and the sliding bar 41; after a long time of operation, the oil adhering to the oil filtering column 21 gradually thickens, resulting in a decrease in the oil filtering gap 23, and it is necessary to clean the grease on the surface of the oil filtering column 21; During cleaning, an operator holds the rotating shaft 332 and rotates it. During the rotation of the rotating shaft 332, the screw 331 will be driven to rotate synchronously. During the rotation of the screw 331, since the screw 331 is threadedly connected to the first scraping ring 31, the screw 331 can drive the first scraping ring 31 to move in the first direction, and the second scraping ring 32 will move synchronously with the first scraping ring 31 in the first direction. During the movement of the first scraping ring 31, it can scrape the oil on the surface of the oil filtering column 21. During the movement of the second scraping ring 32, it can scrape the oil on the inner wall of the separation box body 1. During the movement of the first scraping ring 31, the driving block 5 can push the sliding bar 41 into the jack 212 to scrape the oil on the sliding bar 41. After the driving block 5 separates from the sliding bar 41, the sliding bar 41 can be restored to the oil filtering posture under the drive of the elastic member 42.

[0036] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An engine oil-gas separation device, characterized in that Comprising: A separation box body (1), which is hollow inside; a feed pipe (14), an air outlet pipe (15) and an oil outlet pipe (16) are communicated with the separation box body (1); and, An oil filtering assembly (2), which includes a plurality of oil filtering columns (21); The oil filtering columns (21) are fixedly connected inside the separation box body (1), and the oil filtering columns (21) are parallel to the first direction; The plurality of oil filtering columns (21) are spaced apart in the virtual circumferential direction, the central axis of the virtual circle is parallel to the first direction, and an oil filtering gap (23) is formed between two adjacent oil filtering columns (21); a clearance gap (22) is formed between one end of the oil filtering column (21) far from the central axis of the virtual circle and the inner wall of the separation box body (1); Further comprising: A first oil removal assembly (3), the first oil removal assembly (3) includes: A first scraping ring (31), the first scraping ring (31) is sleeved on the oil filtering column (21), the clearance gap (22) is used to accommodate the first scraping ring (31), and the first scraping ring (31) is slidably connected to the oil filtering column (21) along the first direction; and, A linear driving assembly (33), the linear driving assembly (33) is connected between the first oil removal assembly (3) and the separation box body (1) to drive the first scraping ring (31) to slide along the first direction.

2. The engine oil-gas separation device according to claim 1, characterized in that, The first oil removal assembly (3) further includes: A second scraping ring (32), the outer peripheral wall of the second scraping ring (32) contacts the inner peripheral side wall of the separation box body (1), and the first scraping ring (31) is fixedly connected to the second scraping ring (32).

3. The engine oil and gas separation device according to claim 2, characterized in that, Further including a plurality of auxiliary oil removal assemblies (4), the auxiliary oil removal assemblies (4) include: A sliding bar (41), the mutually approaching wall surfaces of two adjacent oil filtering columns (21) are open hole surfaces (211), and the open hole surfaces (211) are perpendicular to the second direction; the sliding bar (41) is provided with insertion holes (212) on the open hole surfaces (211), at least one end of the sliding bar (41) is located in the insertion holes (212), and can slide in the insertion holes (212) along the second direction so that the sliding bar (41) can be adjusted between an oil filtering posture and a storage posture; When the sliding bar (41) is in the storage posture, the sliding bar (41) is completely located in the insertion holes (212), and one end wall of the sliding bar (41) is coplanar with the open hole surface (211); When the sliding bar (41) is in the oil filtering posture, one end of the sliding bar (41) is located in the insertion holes (212), and the other end is located in the oil filtering gap (23); The auxiliary oil removal assembly (4) further includes: An elastic member (42), the elastic member (42) is fixedly connected between the sliding bar (41) and the oil filtering column (21); when the elastic member (42) is in a recoverable deformation state, it has a force to drive the sliding bar (41) to adjust from the storage posture to the oil filtering posture.

4. The engine oil and gas separation device according to claim 3, characterized in that On each opening surface (211) of the oil filtering column (21), a plurality of sliding bars (41) are correspondingly arranged, and the plurality of sliding bars (41) are spaced apart in the first direction; in the first direction, the sliding bars (41) on two adjacent opening surfaces (211) are staggeredly arranged.

5. An engine oil and gas separation device according to claim 4, characterized in that, When the sliding bar (41) is in the oil filtering posture, a plugging gap (411) is formed in the second direction in the orthographic projection perpendicular to the first direction of two columns of sliding bars (41) located in the oil filtering gap (23); A driving block (5) is fixedly connected to the first scraping ring (31), and both side walls of the driving block (5) are in contact with one of the opening surfaces (211); In the first direction, the middle part of the driving block (5) is a scraping section (51), and both ends of the driving block (5) are insertion ends (52) for inserting into the plugging gap (411); The dimension of the driving block (5) in the second direction is the width of the driving block (5), and the width of the driving block (5) gradually decreases towards the insertion end (52).

6. An engine oil and gas separation device according to claim 4, characterized in that, An embedding groove (213) is formed at the opening of the jack (212) of the oil filtering column (21), the embedding groove (213) penetrates through the opening surface (211), and a flexible gasket (214) is embedded in the embedding groove (213); the flexible gasket (214) is clamped between the sliding bar (41) and the peripheral wall of the groove of the embedding groove (213), and the flexible gasket (214) is in a compressed state.

7. An engine oil and gas separation device according to claim 4, characterized in that, One end of the separation box body (1) is an open end (12), and the other end is a sealed end (11); a cover body (13) is arranged on the separation box body (1) at the open end (12).

8. An engine oil-gas separation device according to claim 7, characterized in that, The linear driving assembly (33) includes: A screw rod (331), the screw rod (331) is parallel to the first direction, the screw rod (331) penetrates through one of the first scraping rings (31), and the screw rod (331) is in threaded connection with the first scraping ring (31); A rotating shaft (332), the rotating shaft (332) is parallel to the first direction, and after passing through the end wall of the sealed end (11) of the separation box body (1) along the first direction, it is coaxially and fixedly connected with the screw rod (331); the rotating shaft (332) is rotatably connected to the separation box body (1) around its own central axis.

9. An engine oil-gas separation device according to any one of claims 2-8, characterized in that, A brush (311) in contact with the oil filtering column (21) is fixedly connected to the first scraping ring (31).

10. The engine oil-gas separation device according to claim 9, characterized in that, In the first direction, the thickness of the second scraping ring (32) gradually decreases towards both ends.

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