CN220081523U - Electric-driven oil-gas separator - Google Patents
Electric-driven oil-gas separator Download PDFInfo
- Publication number
- CN220081523U CN220081523U CN202321176908.9U CN202321176908U CN220081523U CN 220081523 U CN220081523 U CN 220081523U CN 202321176908 U CN202321176908 U CN 202321176908U CN 220081523 U CN220081523 U CN 220081523U
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- China
- Prior art keywords
- cylinder
- shell
- air
- oil
- separation structure
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- 238000000926 separation method Methods 0.000 claims abstract description 53
- 238000009423 ventilation Methods 0.000 claims abstract description 27
- 238000004891 communication Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 35
- 239000002245 particle Substances 0.000 description 23
- 230000000694 effects Effects 0.000 description 15
- 239000010705 motor oil Substances 0.000 description 8
- 238000001914 filtration Methods 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 5
- 239000012535 impurity Substances 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 239000013618 particulate matter Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
Abstract
The utility model discloses an electric-driven oil-gas separator which comprises a shell, wherein the upper part of the shell is provided with an air inlet, and the lower part of the other side of the shell is provided with an air outlet; the separation structure in the middle of the shell divides the shell into an air outlet cavity and an air inlet cavity from top to bottom, and the middle of the separation structure is provided with an air vent; an air pump is arranged in the air inlet cavity corresponding to the air inlet, the air pump is connected with a motor upwards, the air pump shell is connected with an air outlet pipe downwards, and the air outlet pipe extends into the air inlet downwards; the separation structure is connected with a ventilation cylinder downwards, a plurality of ventilation openings are formed in the circumferential side wall of the ventilation cylinder, a filter cylinder is covered outside the ventilation cylinder diameter, and a cover cylinder is stuck on the circumferential outer wall of the filter cylinder; the bottom end of the shell is provided with a baffle cylinder upwards, the top of the baffle cylinder encloses the bottom of the cover cylinder and the filter cylinder, and the top of the baffle cylinder outside the cover cylinder forms a communication port; the shell in the baffle cylinder is downwards connected with an oil return port. The utility model can efficiently separate oil content, particulate matters and gas in the crankcase blow-by gas, discharge the filtered gas and ensure that the discharge reaches the standard.
Description
Technical Field
The utility model relates to the field of machinery, in particular to a gas-oil separation technology of blowby gas of a crankcase of an internal combustion engine.
Background
The internal combustion engine can generate blowby gas in the working process, the blowby gas is not discharged in the crankcase in time, so that the pressure of the crankcase is increased, and the crankcase is leaked in severe cases, so that the normal operation of the internal combustion engine is influenced.
The blowby gas contains impurities (particles) such as engine oil, carbon black, colloid and the like, and is directly discharged into the atmosphere, so that the atmospheric pollution is caused, and the national discharge regulation requirement is not met. The direct discharge of blow-by gas also causes the loss of engine oil (lubricating oil) of the internal combustion engine, which causes the increase of the consumption of the engine oil and the poor lubrication of the internal combustion engine in severe cases.
The existing oil-gas separation device is complex in structure and is of a passive separation structure, and the separation effect cannot be improved by inputting power. The effect of filtering particulate matters of the existing oil-gas separation device is to be improved.
Disclosure of Invention
The utility model aims to provide an electric-driven oil-gas separator which can effectively separate oil, particles and gas in crankcase blow-by gas and discharge filtered gas.
In order to achieve the above purpose, the electric-driven oil-gas separator comprises a shell, wherein the upper part of the shell is provided with an air inlet which is used for connecting with the upper part of a crank case, the lower part of the other side of the shell is provided with an air outlet which is used for discharging filtered gas into the environment; the middle part of the shell is provided with a separation structure, the separation structure and the shell above the separation structure enclose an air inlet cavity, and the separation structure and the shell below the separation structure enclose an air outlet cavity; the middle part of the separation structure is provided with a vent;
an air pump is arranged in the air inlet cavity corresponding to the air inlet, the air pump is upwards connected with a motor, and the circumferential end face of the air pump shell is opened and used for sucking air; the air pump shell is internally provided with a plurality of blades for sucking air in the rotation process, the air pump shell is downwards connected with an air outlet pipe, and the air outlet pipe downwards extends into the air vent; the separation structure is downwards connected with a ventilation cylinder which encloses the ventilation opening and the bottom end of the ventilation cylinder is closed; the circumferential side wall of the ventilation cylinder is provided with a plurality of ventilation ports, the outside of the ventilation cylinder diameter is covered with a filter cylinder made of filter materials, the circumferential outer wall of the filter cylinder is stuck with a cover cylinder, and the cover cylinder is upwards connected with the separation structure;
the bottom end of the shell is provided with a baffling cylinder upwards, the lower end of the baffling cylinder is connected with the bottom surface of the shell, the top of the baffling cylinder encloses the bottom of the cover cylinder and the filter cylinder, and the top end of the baffling cylinder outside the cover cylinder forms a communication port; the shell in the baffling cylinder is downwards connected with an oil return port which is used for communicating with the crankcase.
The bottom of the shell is conical with big top and small bottom, and the oil return port is arranged at the bottommost end of the conical shell.
A rotary sealing structure is arranged between the air vent and the air outlet pipe.
An oil seepage film is arranged in the baffling cylinder right below the filter cylinder, and the oil seepage film is higher than the oil return port.
The utility model has the following advantages:
in operation, the air flow outside the blades impacts the inner wall of the air inlet cavity in the rotation process, and part of particles are separated from the air flow after impacting the inner wall, so that a first particle separation (filtration) effect is formed; in the process that the blades drive the air flow to move at a high speed, particles in the air flow collide with each other and gather to form a second particle separation effect; the particulate matter is blocked in the filter material as the air flow passes through the filter material of the filter cartridge, forming a third particulate matter separation effect. According to the utility model, through multi-stage particle separation, the particle separation and filtration effects are improved; oil in the gas does not move upwards along with the returning air flow under the action of gravity, oil-gas separation is realized, oil content, particles and gas in the crankcase blowby gas are efficiently separated, the filtered gas is discharged, emission is ensured to reach the standard, and engine oil flows back into the crankcase.
The oil return port is the lowest, and the separated engine oil conveniently flows back into the crankcase after being concentrated. The rotary sealing structure can prevent downward air flow from flowing back upwards from the gap between the air vent and the air outlet pipe to flow out of the air inlet cavity, and improves the effect of overcurrent and oil-gas separation.
The oil-penetrating film blocks downward airflow and makes the airflow turn back upwards. Oil components which strike on the oil penetration film are attached to the oil penetration film, gradually penetrate downwards and flow to the oil return port, and then engine oil flows back into the crankcase oil pan. The oil seepage film can greatly reduce the gas flowing back into the crankcase from the oil return port and improve the oil-gas separation effect.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is a schematic cross-sectional view of the present utility model.
Detailed Description
As shown in fig. 1 and 2, the electric-driven oil-gas separator of the utility model comprises a shell, wherein the upper part of the shell is provided with an air inlet 2, the air inlet 2 is used for connecting with the upper part of a crank case, the lower part of the other side of the shell is provided with an air outlet 3, and the air outlet 3 is used for discharging filtered gas into the environment; the engine of the motor vehicle and its crankcase are conventional and are not shown. The housing comprises an upper housing 4 and a lower housing 5 which are connected together up and down by a flange structure 1.
The middle part of the shell is provided with a separation structure 6, the separation structure 6 and the shell above the separation structure enclose an air inlet cavity 7, and the separation structure 6 and the shell below the separation structure enclose an air outlet cavity 8; the middle part of the separation structure 6 is provided with a vent 9;
an air pump is arranged in the air inlet cavity 7 corresponding to the air inlet 2, and is upwards connected with a motor 10, in particular to an air pump shell which is upwards connected with an output shaft of the motor 10; the circumferential end face of the air pump housing 11 is provided open and is used for sucking air; a plurality of blades 12 for sucking air in rotation are arranged in the air pump shell 11 around the central axis of the air pump, the air pump shell 11 is connected with an air outlet pipe 13 downwards, and the air outlet pipe 13 extends into the air vent 9 downwards; the separation structure 6 is downwards connected with a ventilation cylinder 14, the ventilation cylinder 14 encloses the ventilation opening 9 and the bottom end of the ventilation opening is closed; the circumferential side wall of the ventilation cylinder 14 is provided with a plurality of ventilation ports 15, a filter cylinder 16 made of a filter material (such as filter paper) is covered outside the ventilation cylinder 14, a cover cylinder 17 is stuck on the circumferential outer wall of the filter cylinder 16, and the cover cylinder 17 is upwards connected with the separation structure 6;
the bottom end of the lower shell 5 is provided with a baffle cylinder 18 upwards, the lower end of the baffle cylinder 18 is connected with the bottom surface of the lower shell 5, the top of the baffle cylinder 18 encloses the bottom of the cover cylinder 17 and the filter cylinder 16, and the top end of the baffle cylinder outside the cover cylinder 17 forms a communication port 19; the communication port 19 communicates the baffle cylinder 18 with the air outlet chamber 8.
The housing in the baffle 18 is connected downwardly to an oil return 20, the oil return 20 being intended to communicate with the crankcase (of the motor vehicle's engine).
In operation, the air flow outside the blades 12 impacts the inner wall of the air inlet cavity 7 in the rotation process, and part of the particles are separated from the air flow after impacting the inner wall, so that a first particle separation (filtration) effect is formed; in the process of driving the airflow to move at a high speed, the particles in the airflow collide with each other and are gathered to form a second particle separation effect; the third particulate separation is achieved by the particulate being blocked within the filter media as the air flow passes through the filter media of the filter cartridge 16. According to the utility model, through multi-stage particle separation, the particle separation and filtration effects are improved; oil in the gas does not move upwards along with the returning air flow under the action of gravity, oil-gas separation is realized, oil content, particles and gas in the crankcase blowby gas are efficiently separated, the filtered gas is discharged, emission is ensured to reach the standard, and engine oil flows back into the crankcase.
The bottom of the lower shell 5 is in a conical shape with a large upper part and a small lower part, and the oil return port 20 is arranged at the bottommost end of the conical part of the lower shell. The oil return port 20 is the lowest, so that the separated engine oil conveniently flows back into the crankcase after being concentrated.
A rotary sealing structure is arranged between the air vent 9 and the air outlet pipe 13. The rotary sealing structure can adopt a slip ring made of filled polytetrafluoroethylene and a rubber O-shaped ring for providing elasticity, is a conventional technology, is not repeated, and can also adopt other rotary sealing structures. The rotary sealing structure can prevent downward air flow from flowing back upwards from the gap between the air vent 9 and the air outlet pipe 13 to flow out of the air inlet cavity 7, and improves the effect of overcurrent and oil-gas separation.
An oil seepage film 21 is arranged in the baffling cylinder 18 right below the filter cylinder 16, and the oil seepage film 21 is higher than the oil return port 20. The oil-permeable film 21 blocks the downward air flow and makes the air flow turn back upward. Oil components that impinge on the oil-permeable film 21 adhere to the oil-permeable film 21, gradually permeate downward and flow to the oil return port 20, and thus return oil to the crankcase sump. The oil-permeable film 21 can greatly reduce the gas flowing back into the crankcase from the oil return port 20 and improve the oil-gas separation effect.
When the air pump is in operation, the motor 10 drives the air pump to rotate, and the blades 12 of the air pump suck air (from a crankcase of an engine of a motor vehicle) in the air inlet cavity 7 in the rotation process and send the air into the ventilation cylinder 14 downwards at a high speed through the air outlet pipe 13. Because the inner end of the chimney 14 is closed, the oil-containing gas enters the filter cartridge 16 outwardly along the vent 15. Because the filter cylinder 16 is covered in the cover cylinder 17, the oil-containing gas passes through the filter cylinder 16 downwards and enters the baffle cylinder 18, and is deflected upwards in the baffle cylinder 18 and enters the air outlet cavity 8, and finally the filtered gas is discharged into the environment through the air outlet 3. In the working process, the blades 12 generate rotary air flow in the air inlet cavity 7 outside the air pump when rotating, and large particle impurities in the air impact the inner wall of the shell to separate from the air flow in the rotating process, so that the first impurity and particle separation is realized. The particles in the gas sucked by the air pump are mutually impacted when the gas sucked by the air pump rotates at a high speed, the small particles are gathered into large particles, and the blowby gas is separated twice in a limited space. After the gas enters the ventilation cylinder 14 from the gas outlet pipe 13 at a high speed, the gas flows into the filter cylinder 16 from the ventilation holes on the side wall of the ventilation cylinder 14, is filtered by the filter material of the filter cylinder 16 when passing through the inside of the filter cylinder 16, and the particles are blocked by the filter cylinder 16, so that a third particle separation effect is formed. The three-stage separation ensures that the filtering effect of particulate matters in the gas is very high, and the cleanliness of the discharged gas is improved. When the oil-containing gas moves downwards through the filter material of the filter cartridge 16, the air flow impinging on the oil-permeable membrane 21 is turned upwards, and the oil component impinging on the oil-permeable membrane 21 is attached to the oil-permeable membrane 21, gradually permeates downwards and flows to the oil return port 20. If the rotation speed of the motor 10 is regulated by the vehicle-mounted ECU, the suction power of the air pump can be increased, and the pressure in the crankcase of the engine can be regulated, which is a further use and function of the utility model on the basis of the functions of oil-gas separation and particulate matter separation.
The above embodiments are only for illustrating the technical solution of the present utility model, and it should be understood by those skilled in the art that although the present utility model has been described in detail with reference to the above embodiments: modifications and equivalents may be made thereto without departing from the spirit and scope of the utility model, which is intended to be encompassed by the claims.
Claims (4)
1. The electric-driven oil-gas separator comprises a shell, wherein the upper part of the shell is provided with an air inlet which is used for connecting with the upper part of a crank case, the lower part of the other side of the shell is provided with an air outlet which is used for discharging filtered gas into the environment; the method is characterized in that:
the middle part of the shell is provided with a separation structure, the separation structure and the shell above the separation structure enclose an air inlet cavity, and the separation structure and the shell below the separation structure enclose an air outlet cavity; the middle part of the separation structure is provided with a vent;
an air pump is arranged in the air inlet cavity corresponding to the air inlet, the air pump is upwards connected with a motor, and the circumferential end face of the air pump shell is opened and used for sucking air; the air pump shell is internally provided with a plurality of blades for sucking air in the rotation process, the air pump shell is downwards connected with an air outlet pipe, and the air outlet pipe downwards extends into the air vent; the separation structure is downwards connected with a ventilation cylinder which encloses the ventilation opening and the bottom end of the ventilation cylinder is closed; the circumferential side wall of the ventilation cylinder is provided with a plurality of ventilation ports, the outside of the ventilation cylinder diameter is covered with a filter cylinder made of filter materials, the circumferential outer wall of the filter cylinder is stuck with a cover cylinder, and the cover cylinder is upwards connected with the separation structure;
the bottom end of the shell is provided with a baffling cylinder upwards, the lower end of the baffling cylinder is connected with the bottom surface of the shell, the top of the baffling cylinder encloses the bottom of the cover cylinder and the filter cylinder, and the top end of the baffling cylinder outside the cover cylinder forms a communication port; the shell in the baffling cylinder is downwards connected with an oil return port which is used for communicating with the crankcase.
2. The electrically driven oil and gas separator of claim 1, wherein: the bottom of the shell is conical with big top and small bottom, and the oil return port is arranged at the bottommost end of the conical shell.
3. The electrically driven oil-gas separator according to claim 1 or 2, characterized in that: a rotary sealing structure is arranged between the air vent and the air outlet pipe.
4. The electrically driven oil-gas separator according to claim 1 or 2, characterized in that: an oil seepage film is arranged in the baffling cylinder right below the filter cylinder, and the oil seepage film is higher than the oil return port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321176908.9U CN220081523U (en) | 2023-05-16 | 2023-05-16 | Electric-driven oil-gas separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321176908.9U CN220081523U (en) | 2023-05-16 | 2023-05-16 | Electric-driven oil-gas separator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220081523U true CN220081523U (en) | 2023-11-24 |
Family
ID=88823636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321176908.9U Active CN220081523U (en) | 2023-05-16 | 2023-05-16 | Electric-driven oil-gas separator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220081523U (en) |
-
2023
- 2023-05-16 CN CN202321176908.9U patent/CN220081523U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |