CN222208049U - Oil-driven efficient multistage integrated oil-gas separator - Google Patents
Oil-driven efficient multistage integrated oil-gas separator Download PDFInfo
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- CN222208049U CN222208049U CN202421466091.3U CN202421466091U CN222208049U CN 222208049 U CN222208049 U CN 222208049U CN 202421466091 U CN202421466091 U CN 202421466091U CN 222208049 U CN222208049 U CN 222208049U
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- oil
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- filter element
- filtering shell
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- 238000000926 separation method Methods 0.000 claims abstract description 51
- 239000003921 oil Substances 0.000 claims description 108
- 238000001914 filtration Methods 0.000 claims description 47
- 239000010687 lubricating oil Substances 0.000 claims description 12
- 238000005507 spraying Methods 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 abstract description 7
- 239000007789 gas Substances 0.000 description 57
- 239000010705 motor oil Substances 0.000 description 11
- 239000002245 particle Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Landscapes
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
本实用新型公开了一种油驱型高效多级集成式油气分离器，包括基座，基座向上连接有一级过滤壳体和二级过滤壳体；基座向下凹陷设有油腔，一级过滤壳体内设有主动油驱型的油气分离结构，一级过滤壳体顶部连接有用于引入曲轴箱窜气的进气口，一级过滤壳体向下与油腔相连通；油腔最低处设有用于油液回流入曲轴箱的出油口；一级过滤壳体的底部连接有通气管；二级过滤壳体内设有滤芯，二级过滤壳体顶部设有净气出口，净气出口与滤芯的出气部分相连通；滤芯的进气部分连接有进气腔，通气管与伸入二级过滤壳体并与进气腔相连通。本实用新型中，窜气经过分离碟片和滤芯两级分离，显著提高油气分离装置的分离效率，大幅度降低排放PN，满足开式曲轴箱通风系统排放法规要求。
The utility model discloses an oil-driven high-efficiency multi-stage integrated oil-gas separator, including a base, the base is upwardly connected with a primary filter housing and a secondary filter housing; the base is recessed downwardly to provide an oil cavity, an active oil-driven oil-gas separation structure is provided in the primary filter housing, an air inlet for introducing crankcase blowby gas is connected to the top of the primary filter housing, and the primary filter housing is downwardly connected to the oil cavity; an oil outlet for oil to flow back into the crankcase is provided at the lowest point of the oil cavity; a vent pipe is connected to the bottom of the primary filter housing; a filter element is provided in the secondary filter housing, a clean air outlet is provided at the top of the secondary filter housing, and the clean air outlet is connected to the air outlet part of the filter element; the air inlet part of the filter element is connected with an air inlet cavity, and the vent pipe is extended into the secondary filter housing and is connected to the air inlet cavity. In the utility model, the blowby gas is separated in two stages by a separation disc and a filter element, which significantly improves the separation efficiency of the oil-gas separation device, greatly reduces the emission PN, and meets the emission regulations of the open crankcase ventilation system.
Description
Technical Field
The present utility model relates to an oil-gas separator for an internal combustion engine.
Background
In operation of the engine, high pressure gas within the combustion chamber leaks into the crankcase through the piston and cylinder gap, creating blow-by. The blowby gas contains impurities such as combustion waste gas, engine oil and the like, and is not discharged for a long time, so that the pressure of a crankcase is increased, a sealing element is damaged, the engine is leaked, the oxidation and deterioration of the engine oil are accelerated, the abrasion of engine parts is accelerated, the engine oil consumption is increased and the like, and the performance of the engine is influenced. Crankcase ventilation is required to vent blow-by gases, and can be divided into open crankcase ventilation and closed crankcase ventilation, depending on whether the treated crankcase blow-by gases are vented to the atmosphere or are received in an intake duct to participate in combustion.
The adoption of the open type directly discharged into the atmosphere can pollute the environment, and the adoption of the closed type can pollute the parts of an air inlet system such as a supercharger, an intercooler and the like and influence the service life. Both methods require an oil-gas separation device to separate and collect impurities in the mixed gas.
With the increasing strictness of automobile emission regulations, crankcase emissions are required to be tested together with exhaust emissions, the difficulty of passing the emissions is increased, and the emission PN value (the amount of solid particles in the exhaust emissions of vehicles) requirement presents a new challenge for an open crankcase ventilation system.
The scheme provides a high-efficiency integrated oil-gas separation method and device, which are characterized in that oil drives a separation disc to rotate at a high speed to perform primary oil-gas separation (also main oil-gas separation) on crankcase gas, and then secondary oil-gas separation is performed on the gas through an integrated filter element structure, so that high-efficiency separation is realized on crankcase blowby gas, and the PN value is obviously reduced.
Disclosure of utility model
The utility model aims to provide an oil-driven efficient multistage integrated oil-gas separator, which greatly improves the oil-gas separation efficiency and meets the increasingly strict exhaust emission requirements through primary active oil-driven oil-gas separation and secondary filtration oil-gas separation which are connected in series.
In order to achieve the purpose, the oil-driven efficient multistage integrated oil-gas separator comprises a base, wherein the base is upwards connected with a primary filtering shell and a secondary filtering shell, and the primary filtering shell and the secondary filtering shell are arranged side by side at intervals;
The base is provided with an oil cavity corresponding to the downward depression of the primary filtering shell, an upper bearing and a lower bearing are arranged in the primary filtering shell vertically and oppositely, the upper bearing and the lower bearing are connected with the primary filtering shell through a connecting frame, a main shaft is arranged between the upper bearing and the lower bearing, and the main shaft extends downwards into the oil cavity and is connected with an impeller;
The main shaft is connected with a plurality of separation discs, and each separation disc is arranged at intervals up and down and is used for realizing oil-gas separation in rotation;
The side wall of the oil cavity is provided with an oil nozzle, the oil nozzle is externally used for connecting a high-pressure part of a motor vehicle lubricating oil way and introducing high-pressure lubricating oil, and the oil nozzle is internally used for spraying the high-pressure lubricating oil on the impeller to drive the spindle to rotate;
The top of the first-stage filtering shell is connected with an air inlet for introducing crankcase blowby gas, and the air inlet is used for guiding the crankcase blowby gas downwards to each separation disc;
the first-stage filtering shell is downwards communicated with the oil cavity, and the lowest part of the oil cavity is provided with an oil outlet for oil to flow back into the crankcase;
The bottom of the first-stage filtering shell is connected with a vent pipe;
The filter element is arranged in the secondary filter shell, the top of the secondary filter shell is provided with a purified gas outlet which is communicated with the gas outlet part of the filter element, the gas inlet part of the filter element is connected with a gas inlet cavity, and the vent pipe is communicated with the gas inlet cavity and extends into the secondary filter shell.
The bottom of the primary filtering shell is provided with an oil collecting groove along the circumferential direction, and the oil collecting groove is downwards communicated with the oil cavity.
The oil return pipe is arranged on the lower surface of the base, the air inlet cavity is communicated with the oil return pipe downwards through the oil falling hole arranged on the base, and the oil return pipe is communicated with the top of the oil cavity and is used for enabling oil blocked by the secondary filtering shell to flow back into the oil cavity.
The filter element is a cylindrical filter element and comprises an upper end cover and a lower end cover, a cylindrical framework is connected between the upper end cover and the lower end cover, a cylindrical filter layer is connected outside the cylindrical framework, a central hole is formed by surrounding the cylindrical framework and the cylindrical filter layer, the central hole is downwards communicated with an air inlet cavity as an air inlet part of the filter element, a clean air cavity is arranged between the cylindrical filter layer and the outer wall of the secondary filter shell, the circumferential surface of the cylindrical filter layer is used as an air outlet part of the filter element, and the clean air cavity is communicated with a clean air outlet.
The breather pipe is communicated with the air inlet cavity along the tangential direction.
The utility model has the following advantages:
The utility model integrates the active centrifugal oil-gas separation structure and the filtering type separation structure in series for the first time, adopts the active centrifugal oil-gas separation to form a primary separation structure, and forms a secondary separation structure by the filtering type oil-gas separation.
The crankcase blowby gas enters a primary active centrifugal oil-gas separation unit (a primary filtering shell) from an air inlet, most engine oil particles and impurities are separated through each separation disc, and then a small amount of engine oil particles enter the primary active centrifugal oil-gas separation unit (a secondary filtering shell) for further separation, so that PN values in oil gas are greatly reduced, and the discharge regulation requirement of an engine open crankcase ventilation system is met.
In the utility model, the blowby gas is subjected to two-stage separation by the separation disc and the filter element, so that the separation efficiency of the oil-gas separation device is obviously improved, the emission PN is greatly reduced, and the emission regulation requirement of an open crankcase ventilation system is met.
If the first-stage filtering shell is not arranged and only the filter element filtering structure is arranged, the maintenance and replacement frequency of the filter element is too high, and the user experience is poor. Most of engine oil particle impurities are separated through a primary active centrifugal separation unit (a primary filtering shell and structures such as separation discs in the primary filtering shell), so that the filtering load of a filter element is reduced, the service life of the filter element is prolonged, the maintenance times are reduced, and the user experience is improved.
The oil collecting tank is convenient for collecting the oil flowing upwards against the inner wall of the first-stage filtering shell, and then the oil is led into the oil cavity. The oil return pipe is arranged, so that oil filtered by the filter element does not need to be cleaned regularly, and the oil can naturally flow into the oil cavity along the oil return pipe, and the maintenance cost is saved. The filter element has simple structure and is convenient to install and use.
The breather pipe is communicated with the air inlet cavity along the tangential direction, and a cyclone flow which can flow along the wall of the air inlet cavity can be formed in the air inlet cavity, so that the cyclone centrifugal oil-liquid separation effect is realized by utilizing the cyclone flow, and the oil-gas separation effect is improved, namely, oil in the air flow is blocked by the wall surface of the air inlet cavity and flows downwards, and the air flow flows to the filter element along an inherent air passage.
Drawings
Fig. 1 is a schematic perspective view of the present utility model.
Fig. 2 is a schematic structural view of the present utility model.
Fig. 3 is a C-C cross-sectional view of fig. 2.
Fig. 4 is a bottom view of fig. 2.
Fig. 5 is a schematic view of the utility model in a rear view with the base removed.
Fig. 6 is a schematic perspective view of the base.
Detailed Description
As shown in fig. 1 to 6, the oil-driven efficient multistage integrated oil-gas separator comprises a base 1, wherein the base 1 is connected with a primary filter shell 2 and a secondary filter shell 3 upwards, and the primary filter shell 2 and the secondary filter shell 3 are arranged side by side at intervals;
the base 1 is provided with an oil cavity 4 corresponding to the first-stage filtering shell 2 in a downward concave manner, an upper bearing 5 and a lower bearing 6 are arranged in the first-stage filtering shell 2 in an up-down opposite manner, the upper bearing 5 and the lower bearing 6 are connected with the first-stage filtering shell 2 through a connecting frame, a main shaft 7 is arranged between the upper bearing 5 and the lower bearing 6, and the main shaft 7 extends into the oil cavity 4 downwards and is connected with an impeller 8;
The main shaft 7 is connected with a plurality of separation discs 9, and each separation disc 9 is arranged at intervals up and down and is used for realizing oil-gas separation in rotation;
The side wall of the oil cavity 4 is provided with an oil nozzle 10, the oil nozzle 10 is externally used for connecting a high-pressure part of a motor vehicle lubricating oil way and introducing high-pressure lubricating oil, and the oil nozzle 10 is internally used for spraying the high-pressure lubricating oil on the impeller 8 to drive the spindle 7 to rotate;
The top of the primary filtering shell 2 is connected with an air inlet 11 for introducing crankcase blow-by gas, and the air inlet 11 is used for guiding the crankcase blow-by gas downwards to each separation disc 9;
The first-stage filtering shell 2 is communicated with the oil cavity 4 downwards, and the lowest part of the oil cavity 4 is provided with an oil outlet 12 for oil to flow back into the crankcase;
the bottom of the primary filtering shell 2 is connected with a vent pipe 13;
The filter element is arranged in the secondary filter shell 3, a purified gas outlet 14 is arranged at the top of the secondary filter shell 3, the purified gas outlet 14 is communicated with the gas outlet part of the filter element, the gas inlet part of the filter element is connected with a gas inlet cavity 15, and a vent pipe 13 is communicated with the gas inlet cavity 15 and extends into the secondary filter shell 3.
The bottom of the primary filtering shell 2 is provided with an oil collecting groove 16 along the circumferential direction, and the oil collecting groove 16 is downwards communicated with the oil cavity 4. The oil collecting tank 16 conveniently collects the oil flowing upward against the inner wall of the primary filter housing 2 and then introduces it into the oil chamber 4. The oil passage of the oil collecting groove 16 communicating with the oil chamber 4 preferably passes through the lower bearing 6, so that the lower bearing 6 is continuously lubricated in operation.
The lower surface of the base 1 is provided with an oil return pipe 17, the air inlet cavity 15 is downwards communicated with the oil return pipe 17 through an oil falling hole 18 arranged on the base 1, and the oil return pipe 17 is communicated with the top of the oil cavity 4 and is used for enabling oil blocked by the secondary filtering shell 3 to flow back into the oil cavity 4. The oil return pipe 17 is arranged, so that oil filtered by the filter element does not need to be cleaned regularly, and the oil can naturally flow into the oil cavity 4 along the oil return pipe 17, and the maintenance cost is saved.
The filter element is a cylindrical filter element and comprises an upper end cover 19 and a lower end cover 20, a cylindrical framework 21 is connected between the upper end cover 19 and the lower end cover 20, a cylindrical filter layer 22 is connected to the outside of the cylindrical framework 21, a central hole is formed by surrounding the cylindrical framework 21 and the cylindrical filter layer 22, the central hole is downwards communicated with the air inlet cavity 15 as an air inlet part of the filter element, a clean air cavity 23 is arranged between the cylindrical filter layer 22 and the outer wall of the secondary filter shell 3, the circumferential surface of the cylindrical filter layer 22 is used as an air outlet part of the filter element, and the clean air cavity 23 is communicated with the clean air outlet 14.
The breather pipe 13 is communicated with the air inlet cavity 15 along the tangential direction, and can form a cyclone flow which can flow along the wall in the air inlet cavity 15, so that the cyclone centrifugal oil-liquid separation effect is realized by utilizing the cyclone flow, and the oil-gas separation effect is improved, namely, oil in the air flow is blocked by the wall surface of the air inlet cavity 15 and flows downwards, and the air flow flows to the filter element along an inherent air passage.
When in use, the high-pressure part of the motor vehicle lubricating oil (namely engine oil) way is communicated with the oil nozzle 10, so that the high-pressure lubricating oil (engine oil) is continuously sprayed to the impeller 8 through the oil nozzle 10, and the impeller 8 drives each separation disc 9 to rotate at a high speed through the main shaft 7. Lubricating oil after pushing the impeller 8 falls on the bottom of the oil cavity 4 and flows back to the crankcase through the oil outlet 12.
The crankcase blowby gas enters the first-stage filtering shell 2 from the air inlet 11, and flows downwards along with the separation discs 9 when flowing downwards and centrifugally moves along with the separation discs 9, and engine oil particles are larger in inertia than gas, so that the engine oil particles are thrown onto the inner wall of the first-stage filtering shell 2 (most part of the engine oil particles are separated from the air flow, adhere to the wall and flow downwards to the oil collecting tank 16, finally flow back into the oil cavity 4, and flow back to the crankcase along with the oil in the oil cavity 4 through the oil outlet 12.
The above realizes the primary oil-gas separation effect.
The air flow flowing through each separation disc 9 in the first-stage filtering shell 2 flows to the air inlet cavity 15 in the second-stage filtering shell 3 along the tangential direction through the air pipe 13 to form an adhesive-flowing rotational flow, oil in the air flow is blocked by the wall surface of the air inlet cavity 15 and flows downwards, and the air flow flows to the central hole of the filter element along an inherent air passage.
The gas entering the central hole of the filter element passes through the cylindrical filter layer 22 along the radial direction, oil in the gas is blocked by the cylindrical filter layer 22, flows downwards along the cylindrical filter layer 22, and finally flows back into the oil cavity 4 through the oil dropping hole 18 and the oil return pipe 17. After passing through the cylindrical filter layer 22, the gas flows upward through the clean gas outlet 14, and the gas meeting the PN value requirement is discharged.
The above embodiments are only for illustrating the technical solution of the present utility model and, although the present utility model has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the present utility model may be modified or equivalently replaced without departing from the spirit and scope of the present utility model, and any modification or partial replacement thereof should be included in the scope of the claims of the present utility model.
Claims (5)
1. The oil-driven efficient multistage integrated oil-gas separator comprises a base and is characterized in that the base is upwards connected with a primary filtering shell and a secondary filtering shell, and the primary filtering shell and the secondary filtering shell are arranged side by side at intervals;
The base is provided with an oil cavity corresponding to the downward depression of the primary filtering shell, an upper bearing and a lower bearing are arranged in the primary filtering shell vertically and oppositely, the upper bearing and the lower bearing are connected with the primary filtering shell through a connecting frame, a main shaft is arranged between the upper bearing and the lower bearing, and the main shaft extends downwards into the oil cavity and is connected with an impeller;
The main shaft is connected with a plurality of separation discs, and each separation disc is arranged at intervals up and down and is used for realizing oil-gas separation in rotation;
The side wall of the oil cavity is provided with an oil nozzle, the oil nozzle is externally used for connecting a high-pressure part of a motor vehicle lubricating oil way and introducing high-pressure lubricating oil, and the oil nozzle is internally used for spraying the high-pressure lubricating oil on the impeller to drive the spindle to rotate;
The top of the first-stage filtering shell is connected with an air inlet for introducing crankcase blowby gas, and the air inlet is used for guiding the crankcase blowby gas downwards to each separation disc;
the first-stage filtering shell is downwards communicated with the oil cavity, and the lowest part of the oil cavity is provided with an oil outlet for oil to flow back into the crankcase;
The bottom of the first-stage filtering shell is connected with a vent pipe;
The filter element is arranged in the secondary filter shell, the top of the secondary filter shell is provided with a purified gas outlet which is communicated with the gas outlet part of the filter element, the gas inlet part of the filter element is connected with a gas inlet cavity, and the vent pipe is communicated with the gas inlet cavity and extends into the secondary filter shell.
2. The oil-driven efficient multistage integrated oil-gas separator according to claim 1, characterized in that:
the bottom of the primary filtering shell is provided with an oil collecting groove along the circumferential direction, and the oil collecting groove is downwards communicated with the oil cavity.
3. The oil-driven efficient multistage integrated oil-gas separator according to claim 1, wherein an oil return pipe is arranged on the lower surface of the base, the air inlet cavity is downwards communicated with the oil return pipe through an oil falling hole arranged on the base, and the oil return pipe is communicated with the top of the oil cavity and used for enabling oil blocked by the secondary filtering shell to flow back into the oil cavity.
4. The oil-driven efficient multistage integrated oil-gas separator according to any one of claims 1 to 3, wherein the filter element is a cylindrical filter element and comprises an upper end cover and a lower end cover, a cylindrical framework is connected between the upper end cover and the lower end cover, a cylindrical filter layer is connected to the outside of the cylindrical framework, a central hole is formed by surrounding the cylindrical framework and the cylindrical filter layer, the central hole is downwards communicated with an air inlet cavity as an air inlet part of the filter element, a clean air cavity is arranged between the cylindrical filter layer and the outer wall of the secondary filter shell, the circumferential surface of the cylindrical filter layer is used as an air outlet part of the filter element, and the clean air cavity is communicated with a clean air outlet.
5. The oil-driven efficient multistage integrated oil-gas separator according to any one of claims 1 to 3, wherein the breather pipe is communicated with the air intake chamber in a tangential direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421466091.3U CN222208049U (en) | 2024-06-25 | 2024-06-25 | Oil-driven efficient multistage integrated oil-gas separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421466091.3U CN222208049U (en) | 2024-06-25 | 2024-06-25 | Oil-driven efficient multistage integrated oil-gas separator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222208049U true CN222208049U (en) | 2024-12-20 |
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ID=93860715
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421466091.3U Active CN222208049U (en) | 2024-06-25 | 2024-06-25 | Oil-driven efficient multistage integrated oil-gas separator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222208049U (en) |
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2024
- 2024-06-25 CN CN202421466091.3U patent/CN222208049U/en active Active
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