CN220059691U - Crankcase ventilation structure - Google Patents
Crankcase ventilation structure Download PDFInfo
- Publication number
- CN220059691U CN220059691U CN202321509576.1U CN202321509576U CN220059691U CN 220059691 U CN220059691 U CN 220059691U CN 202321509576 U CN202321509576 U CN 202321509576U CN 220059691 U CN220059691 U CN 220059691U
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- Prior art keywords
- support arm
- crankcase
- slot
- pipe
- threaded
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- 238000009423 ventilation Methods 0.000 title claims abstract description 42
- 230000037431 insertion Effects 0.000 claims abstract description 8
- 238000003780 insertion Methods 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 239000007789 gas Substances 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Landscapes
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
The utility model provides a crankcase ventilation structure, which comprises a ventilation pipe, wherein one end of the ventilation pipe is provided with a safety valve, and one end of the safety valve, which is far away from the ventilation pipe, is provided with an insertion pipe; one end of the first support arm is rotationally connected with the vent pipe, the two sides of the vent pipe are respectively provided with the first support arm, and one end of the first support arm far away from the vent pipe is provided with a first slot arranged along the length direction of the first support arm; the first inserting rod is fixedly arranged in the first slot through a first positioning screw; one end of the second support arm is vertically connected with one end of the first inserting rod, which is positioned outside the first inserting groove, and a second inserting groove which is arranged along the length direction of the second support arm is arranged on one end surface of the second support arm, which is far away from the first inserting rod; the second inserting rod is arranged in the second slot through a second positioning screw; and one end of the clamping plate is vertically connected with one end of the second inserted link, which is positioned outside the second slot, and the ventilation pipe is arranged on the surface of the crankcase in a fixed mode without adopting a screw and threaded blind hole matched with each other.
Description
Technical Field
The utility model relates to a crankcase ventilation structure, and belongs to the technical field of diesel engines.
Background
When the diesel engine works, a part of combustible mixed gas and waste gas always enter the crankcase through the movable ring, and the fuel steam entering the crankcase can dilute the lubricating oil after being condensed, so that the performance of the diesel engine is deteriorated.
The exhaust gas contains water vapor and sulfur dioxide, and the water vapor condenses in the lubricating oil to form foam, which disrupts the lubricating oil supply. As the combustible mixture and exhaust gas enter the crankcase, the pressure of the crankcase increases, the oil leaks from crankshaft seals, crankcase gaskets, etc., and the loss of oil vapor to the atmosphere increases the pollution of the diesel engine to the atmosphere. The ventilation device of the diesel engine crankcase can avoid the phenomenon that the ventilation pipe is arranged on the surface of the diesel engine crankcase.
At present, the vent pipe is generally fixed on the surface of the crankcase by adopting a screw, namely, the flange is arranged on the vent pipe, a plurality of threaded blind holes matched with the screw are formed on the surface of the crankcase, so that the screw passes through the holes on the flange and then is screwed into the threaded blind holes on the crankcase, and the connection between the vent pipe and the crankcase is completed.
The screw has the impaired condition of corrosion, when dismantling the impaired screw of corrosion, leads to the fact the damage to the screw blind hole on crankcase surface easily to influence the change of vent pipe, lead to the vent pipe unable to be connected smoothly with the crankcase when serious.
Disclosure of Invention
Aiming at the defects existing in the prior art, the utility model aims to provide a ventilation structure of a crankcase, so as to solve the problems in the background art.
In order to achieve the above object, the present utility model is realized by the following technical scheme:
a crankcase ventilation structure comprising:
one end of the vent pipe is provided with a safety valve, and one end of the safety valve, which is far away from the vent pipe, is provided with an insertion pipe;
one end of the first support arm is rotationally connected with the vent pipe, the first support arms are respectively arranged on two sides of the vent pipe, and a first slot arranged along the length direction of the first support arm is formed in one end, far away from the vent pipe, of the first support arm;
the first inserting rod is fixedly arranged in the first slot through a first positioning screw;
one end of the second support arm is vertically connected with one end of the first inserting rod, which is positioned outside the first inserting groove, and a second inserting groove which is arranged along the length direction of the second support arm is arranged on one end surface of the second support arm, which is far away from the first inserting rod;
the second inserting rod is arranged in the second slot through a second positioning screw;
one end of the clamping plate is vertically connected with one end of the second inserting rod positioned outside the second slot,
the middle part of the first support arm, which is close to the ventilation pipe, is provided with a screw hole, and the screw hole is internally connected with a pressurizing bolt which is used for propping against the surface of the crankcase in a threaded manner.
Optionally, a first threaded hole communicated with the first slot is formed in the side surface of the first support arm, which is far away from one end of the vent pipe, and the first positioning screw is in threaded connection with the first threaded hole;
the side surface of the second support arm, which is far away from one end of the first support arm, is provided with a second threaded hole communicated with the second slot, and the second set screw is in threaded connection with the second threaded hole.
Optionally, a plurality of threaded through holes are uniformly formed in a side surface, close to the crankcase, of the clamping plate, and support bolts are connected with the threaded through holes in an internal threaded mode.
Optionally, a nut is screwed on the pressurizing bolt, and the nut is disposed on a side of the first support arm away from the crankcase.
Optionally, the rotating member includes:
the cylinder sleeve is sleeved on the ventilation pipe, two limiting rings of the cylinder sleeve (4) are sleeved on the ventilation pipe, and the two limiting rings are respectively positioned on two sides of the cylinder sleeve;
wherein, the both sides symmetry of barrel casing is connected with two first support arm.
Optionally, one end threaded connection that the relief valve was kept away from to the vent tube has the screw cap, the screw cap is kept away from a side of vent tube is the opening form, one side of keeping away from the vent tube in the screw cap is equipped with the filter screen.
Optionally, a sealing sleeve is sleeved on the plug tube, a ring is arranged on one side, close to the safety valve, of the sealing sleeve, and the ring is sleeved on the plug tube and connected with the plug tube.
The utility model has the beneficial effects that:
1. according to the size of the crankcase, the length of the first inserted link in the first slot is adjusted, the distance between the two second support arms is matched with the width of the two parallel sides of the crankcase, then the relative positions of the first inserted link and the first support arm are fixed by using the first positioning screw, the length of the second inserted link in the second slot is adjusted, the distance between the clamping plate and the first support arm meets the size requirement of the crankcase, the relative positions of the clamping plate, the second support arm and the crankcase are fixed by using the second positioning screw, the adjustment of the relative positions of the clamping plate, the second support arm and the crankcase is realized, the adjustment is suitable for the requirements of different crankcases, and the application range is enlarged.
2. The connecting pipe is inserted into the air holes on the surface of the crankcase, then the structures formed by the first support arm, the second support arm, the clamping plate and other parts are respectively clamped on the three sides of the crankcase, then the pressurizing bolt is screwed, one end of the pressurizing bolt is tightly attached to the surface of the crankcase, and then under the action of the pressurizing bolt, the structures formed by the first support arm, the second support arm, the clamping half and other parts are limited on the crankcase, so that the assembly of the air vent and the crankcase is completed, the air vent is not required to be installed on the surface of the crankcase by adopting a fixing mode of matching screws with threaded blind holes, and the threaded blind holes matched with the screws are not required to be formed on the surface of the crankcase.
3. The two first support arms are symmetrically arranged on the sleeve, the sleeve is sleeved on the vent pipe, the relative positions of the sleeve and the vent pipe are limited by the two limiting rings, the first support arms are rotationally connected with the vent pipe, and the direction of the first support arms can be conveniently adjusted according to the requirement.
4. After the cardboard card is on a side of crankcase, when there is the clearance between cardboard and the crankcase surface, twist the supporting bolt in a plurality of screw thread through-holes, make a plurality of supporting bolt one end all contact with the crankcase surface, and then supporting bolt plays the effect of filling cardboard and crankcase surface clearance, improves the area of contact on cardboard and crankcase surface.
Drawings
Other features, objects and advantages of the present utility model will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a schematic view of a crankcase ventilation structure according to the utility model;
FIG. 2 is a cross-sectional view of a first arm of a crankcase ventilation structure according to the utility model;
FIG. 3 is a schematic diagram illustrating the assembly of a first insert pin and a second arm in a crankcase ventilation structure according to the utility model;
FIG. 4 is a schematic diagram illustrating the assembly of a second insert pin and a clamping plate in a crankcase ventilation structure according to the utility model;
in the figure: 1. a ventilation pipe; 2. a pressing bolt; 3. a nut; 4. a sleeve; 5. a limiting ring; 6. a safety valve; 7. a connecting pipe is inserted; 8. a ring; 9. sealing sleeve; 10. a screw cap; 11. a filter screen; 12. a first arm; 13. a first positioning screw; 14. a second arm; 15. a second set screw; 16. a clamping plate; 17. a support bolt; 18. a threaded through hole; 19. a screw hole; 20. a first slot; 21. a first threaded hole; 22. a first plunger; 23. a second slot; 24. a second threaded hole; 25. and a second plunger.
Description of the embodiments
The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.
Examples
Referring to fig. 1, the utility model provides a ventilation structure of a crankcase, which comprises a ventilation pipe 1, wherein a safety valve 6 is installed at one end of the ventilation pipe 1, an insertion pipe 7 is installed at one end of the safety valve 6 far away from the ventilation pipe 1, the insertion pipe 7 is used for being inserted into a ventilation hole on the surface of the crankcase, a sealing sleeve 9 which is jointed with the inner wall of the ventilation hole on the surface of the crankcase is sleeved on the insertion pipe 7, a ring 8 which is jointed with the outer surface of the crankcase is arranged at one side of the sealing sleeve 9 close to the safety valve 6, and the ring 8 is sleeved on the insertion pipe 7 and is fixedly connected with the insertion pipe 7.
After the plug tube 7 is inserted into the vent hole, the sealing sleeve 9 is attached to the inner wall of the vent hole, the tightness between the plug tube 7 and the vent hole is improved, when the air pressure in the crankcase is increased, the safety valve 6 is opened, so that redundant air in the crankcase flows into the vent tube 1 through the safety valve 6, and then the air is discharged through the vent hole.
One end threaded connection that relief valve 6 was kept away from to vent tube 1 has screw cap 10, and the screw cap 10 deviates from the one side of vent tube 1 and is the opening form, installs filter screen 11 in the screw cap 10, and filter screen 11 is used for filtering the dust, under the filtration of filter screen 11, prevents that external dust from getting into vent tube 1 at will.
The middle part of the vent pipe 1 is sleeved with a sleeve 4, both sides of the sleeve 4 along the length direction of the vent pipe 1 are respectively provided with a limiting ring 5 used for limiting the position of the sleeve 4, and the limiting rings 5 are sleeved on the vent pipe 1 and fixedly connected with the vent pipe 1. Under the limit of the limiting ring 5, the relative position of the cylinder sleeve 4 and the ventilation tube 1 is kept unchanged.
Two first support arms 12 are symmetrically arranged on the cylinder sleeve 4, the cylinder sleeve 4 is sleeved on the vent pipe 1, the relative positions of the cylinder sleeve 4 and the vent pipe 1 are limited by the two limiting rings 5, the first support arms 12 are rotationally connected with the vent pipe 1, and the direction of the first support arms 12 is conveniently adjusted according to the requirement.
In one particular embodiment:
referring to fig. 1-4, a first slot 20 is formed in an end surface of the first support arm 12 facing away from the ventilation tube 1, and a first insert rod 22 is inserted into the first slot 20. A first threaded hole 21 communicated with the first slot 20 is formed in the side surface of the first support arm 12 far away from one end of the vent pipe 1, a first positioning screw 13 is connected to the first threaded hole 21 in a threaded manner, and the first positioning screw 13 is used for limiting the relative position of the first inserted link 22 and the first support arm 12.
The first inserting rod 22 is fixedly connected with a second support arm 14 which is perpendicular to the first support arm 12 at one end of the first inserting rod 20, a second inserting groove 23 is formed in the end face of one end, far away from the first inserting rod 22, of the second support arm 14, the second inserting groove 23 is formed in the length direction of the second support arm 14, and a second inserting rod 25 is inserted into the second inserting groove 23. The side surface of the second support arm 14, which is far away from the end of the first support arm 12, is provided with a second threaded hole 24 communicated with a second slot 23, a second set screw 15 is connected in the second threaded hole 24 in a threaded manner, and the second set screw 15 is used for limiting the relative position of the second insert rod 25 and the second support arm 14.
The second inserting rod 25 is fixedly connected with a clamping plate 16 at one end outside the second inserting groove 23, the clamping plate 16 is used for being clamped on one side face of the crank case, and the clamping plate 16 is perpendicular to the second supporting arm 14.
According to the size of the crank case, the length of the first inserting rod 22 in the first slot 20 is adjusted, the distance between the two second support arms 14 is matched with the width of two parallel sides of the crank case, then the relative positions of the first inserting rod 22 and the first support arm 12 are fixed by using the first positioning screw 13, the length of the second inserting rod 25 in the second slot 23 is adjusted, the distance between the clamping plate 16 and the first support arm 12 meets the size requirement of the crank case, the relative positions of the second inserting rod 25 and the second support arm 14 are fixed by using the second positioning screw 15, the adjustment of the relative positions of the clamping plate 16, the second support arm 14 and the crank case is realized, the adjustment is suitable for the requirements of different crank cases, and the application range is enlarged.
In another specific embodiment:
referring to fig. 1-4, a screw hole 19 is formed in a side surface of the first support arm 12, which is close to one end of the ventilation pipe 1, and a pressurizing bolt 2 for abutting against the surface of the crankcase is connected with the screw hole 19 in a threaded manner.
The splicing tube 7 is inserted into the ventilation holes on the surface of the crankcase, then the structures formed by the first support arm 12, the second support arm 14, the clamping plate 16 and other parts are respectively clamped on three sides of the crankcase, then the pressurizing bolt 2 is screwed, one end of the pressurizing bolt 2 is tightly attached to the surface of the crankcase, and then under the action of the pressurizing bolt 2, the structures formed by the first support arm 12, the second support arm 14, the clamping half and other parts are limited on the crankcase, so that the assembly of the ventilation tube 1 and the crankcase is completed, the ventilation tube 1 is installed on the surface of the crankcase without adopting a fixing mode of matching screws and the threaded blind holes, the threaded blind holes matched with the screws are not required to be formed on the surface of the crankcase, the pressurizing bolt 2 is connected with the nut 3 through threads, the nut 3 is arranged on one side of the first support arm 12 deviating from the crankcase, and the nut 3 is tightly attached to the first support arm 12 through screwing the nut 3, and the pressurizing bolt 2 is prevented from loosening.
In another specific embodiment:
referring to fig. 1 and 4, a plurality of threaded through holes 18 are uniformly formed in a surface of the clamping plate 16 facing the crankcase, and support bolts 17 for filling gaps between the clamping plate 16 and the surface of the crankcase are connected in the threaded through holes 18 in a threaded manner.
After the clamping plate 16 is clamped on one side surface of the crankcase, when a gap exists between the clamping plate 16 and the surface of the crankcase, the supporting bolts 17 in the threaded through holes 18 are screwed, one ends of the supporting bolts 17 are contacted with the surface of the crankcase, and then the supporting bolts 17 play a role in filling the gap between the clamping plate 16 and the surface of the crankcase, so that the contact area between the clamping plate 16 and the surface of the crankcase is increased.
Although the present disclosure describes embodiments, not every embodiment is described in terms of a single embodiment, and such description is for clarity only, and one skilled in the art will recognize that the embodiments described in the disclosure as a whole may be combined appropriately to form other embodiments that will be apparent to those skilled in the art.
Claims (7)
1. A crankcase ventilation structure, comprising:
one end of the vent pipe is provided with a safety valve, and one end of the safety valve, which is far away from the vent pipe, is provided with an insertion pipe;
one end of the first support arm is rotationally connected with the vent pipe, the first support arms are respectively arranged on two sides of the vent pipe, and a first slot arranged along the length direction of the first support arm is formed in one end, far away from the vent pipe, of the first support arm;
the first inserting rod is fixedly arranged in the first slot through a first positioning screw;
one end of the second support arm is vertically connected with one end of the first inserting rod, which is positioned outside the first inserting groove, and a second inserting groove which is arranged along the length direction of the second support arm is arranged on one end surface of the second support arm, which is far away from the first inserting rod;
the second inserting rod is arranged in the second slot through a second positioning screw;
one end of the clamping plate is vertically connected with one end of the second inserting rod positioned outside the second slot,
the middle part of the first support arm, which is close to the ventilation pipe, is provided with a screw hole, and the screw hole is internally connected with a pressurizing bolt which is used for propping against the surface of the crankcase in a threaded manner.
2. A crankcase ventilation structure according to claim 1, wherein: the side surface of the first support arm, which is far away from one end of the vent pipe, is provided with a first threaded hole communicated with the first slot, and the first positioning screw is in threaded connection with the first threaded hole;
the side surface of the second support arm, which is far away from one end of the first support arm, is provided with a second threaded hole communicated with the second slot, and the second set screw is in threaded connection with the second threaded hole.
3. A crankcase ventilation structure according to claim 1, wherein: a plurality of threaded through holes are uniformly formed in one side surface, close to the crankcase, of the clamping plate, and support bolts are connected with the threaded through holes in an internal threaded mode.
4. A crankcase ventilation structure according to claim 1, wherein: the pressurizing bolt is connected with a nut in a threaded mode, and the nut is arranged on one side, away from the crankcase, of the first support arm.
5. A crankcase ventilation structure according to claim 1, wherein: the rotating member includes:
the cylinder sleeve is sleeved on the ventilation pipe, two limiting rings of the cylinder sleeve (4) are sleeved on the ventilation pipe, and the two limiting rings are respectively positioned on two sides of the cylinder sleeve;
wherein, the both sides symmetry of barrel casing is connected with two first support arm.
6. A crankcase ventilation structure according to claim 1, wherein: one end threaded connection that the relief valve was kept away from to the vent tube has the screw cap, the screw cap is kept away from a side of vent tube is the opening form, one side of keeping away from the vent tube in the screw cap is equipped with the filter screen.
7. A crankcase ventilation structure according to claim 1, wherein: the sealing sleeve is sleeved on the plug tube, a ring is arranged on one side, close to the safety valve, of the sealing sleeve, and the ring is sleeved on the plug tube and connected with the plug tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321509576.1U CN220059691U (en) | 2023-06-14 | 2023-06-14 | Crankcase ventilation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321509576.1U CN220059691U (en) | 2023-06-14 | 2023-06-14 | Crankcase ventilation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220059691U true CN220059691U (en) | 2023-11-21 |
Family
ID=88758660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321509576.1U Active CN220059691U (en) | 2023-06-14 | 2023-06-14 | Crankcase ventilation structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220059691U (en) |
-
2023
- 2023-06-14 CN CN202321509576.1U patent/CN220059691U/en active Active
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