CN205503396U - Novel oil leakage piston structure is prevented to flush type - Google Patents
Novel oil leakage piston structure is prevented to flush type Download PDFInfo
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- CN205503396U CN205503396U CN201620270124.6U CN201620270124U CN205503396U CN 205503396 U CN205503396 U CN 205503396U CN 201620270124 U CN201620270124 U CN 201620270124U CN 205503396 U CN205503396 U CN 205503396U
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- ring groove
- oil
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Abstract
The utility model discloses an oil leakage piston structure is prevented to the flush type, including setting up the piston in the cylinder liner, interstitial space has between piston outer wall and the cylinder liner bore, the piston outer wall is equipped with gas ring groove and oil ring groove, the built -in gaseous ring that is equipped with of gas ring groove, the built -in oil ring that is equipped with of oil ring groove, the gaseous ring activity sets up in gas ring groove, be formed with the back clearance chamber between gaseous ring and the gas ring groove lateral wall, be formed with the clearance passageway that switches on back clearance chamber and interstitial space between gaseous ring and gas ring groove upper wall and/or the gas ring groove lower wall, still be equipped with the pilot hole on the piston only, be equipped with in this pilot hole and put the inserts by what powder metallurgical material made, it dredges the passageway to put inside formation of inserts. The utility model discloses utilizing the pressure differential that air compressor machine or internal -combustion engine pressure processes produced and cleaing away the oil leakage of piston back clearance intracavity through dredging the passageway, make the life of air compressor machine or internal -combustion engine longer, move more stably, to manufacturing, the required precision is lower, but reduce cost is favorable to producing manufacturing.
Description
Technical field
This utility model belongs to air compressor machine or technical field of internal combustion engines, is specifically related to a kind of for air compressor machine or the novel flush type Anti-blow by piston structure of internal combustion engine.
Background technology
nullFor air compressor machine or the piston of internal combustion engine，Piston outer wall is provided with three seals annular groove (can be found in patent CN202108699U and patent CN104329239A) from top to bottom，It is respectively the first annular groove、Second annular groove and the 3rd annular groove，Wherein it is equiped with, in the first annular groove and the second annular groove, the first gas ring and second gas ring coordinated with inboard wall of cylinder liner hermetic seal respectively，The 3rd oil ring coordinated with inboard wall of cylinder liner oil seal it is equiped with in 3rd annular groove，First gas ring and second gas ring are for the hermetic seal between upper piston area air cavity and piston lower portion oil gas cavity，The fluid or the mist of oil that prevent piston lower portion cavity enter in upper piston area cavity and (alter oil problem) simultaneously，3rd oil ring strikes off major part fluid on inboard wall of cylinder liner，Surplus a small amount of fluid is attached to inboard wall of cylinder liner friction, lubrication between piston，Further，For ease of assembling and anti-long term wear，First gas ring、Second gas ring and the 3rd oil ring are designed to take the elastic open loop structure (seeing patent CN10178339A) of mouth (gap)，In view of above-mentioned piston structure，During piston pumps in cylinder sleeve，The fluid of piston lower portion cavity or mist of oil are inevitably from first gas ring、At the taking mouthful of second gas ring and the 3rd oil ring or first gas ring、Gap location between second gas ring and the 3rd oil ring and inboard wall of cylinder liner scurries into upper piston area cavity，What the most existing air compressor machine and internal combustion engine generally existed alters oil problem.
For solving the problems referred to above, prior art proposes some solutions.Such as patent CN102588252A and patent CN101334021A are improved in terms of material, so that sealing ring or inboard wall of cylinder liner are more resistant to mill, keep sealing property more longlasting between piston and cylinder sleeve；The most such as patent CN104329239A, patent CN103790803A, CN10178339A and patent CN202108700U are improved so that the sealing effectiveness between sealing ring and inboard wall of cylinder liner is more preferably to prevent from altering oil from the configuration aspects of compression ring and/or oil ring, these schemes are all to use the mode of " blocking up " to solve problem in simple terms, but practical effect is unsatisfactory, preferable effect it is likely to be breached within the early stage short time, but problem is still after after running after a while, compression ring and oil ring wear and tear, additionally for manufacturing, its requirement on machining accuracy is higher, cost is consequently increased；And use the mode of " blocking up ", i.e. enable to be effectively improved and alter oil problem, the most also can reduce the cloth oil mass of inboard wall of cylinder liner, thus increase frictional dissipation between piston and inboard wall of cylinder liner, be unfavorable for that air compressor machine or internal combustion engine normally use.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, there is provided a kind of for air compressor machine or the novel flush type Anti-blow by piston structure of internal combustion engine, this utility model uses the mode with prior art antipodal " dredging " to solve to alter the technical problem of oil, wherein process and assemble hole in piston gas ring groove, be embedded in the concrete dynamic modulus goods be made up of powdered metallurgical material in pilot hole puts inserts, it is simple to processing and manufacturing.
To achieve these goals, this utility model be the technical scheme is that
nullA kind of flush type Anti-blow by piston structure，Including the piston being arranged in cylinder sleeve，There is between piston outer wall and inboard wall of cylinder liner spatia，Piston outer wall is provided with compression and oil ring groove from top to bottom，It is equiped with in compression and seals, with inboard wall of cylinder liner, the compression ring coordinated，It is equiped with in oil ring groove and seals, with inboard wall of cylinder liner, the oil ring coordinated，Compression ring is movably set in compression，Back clearance chamber it is formed with between compression ring and compression sidewall，It is formed the clearance channel in back clearance chamber with spatia conducting between compression ring and compression upper wall and/or compression lower wall，The pilot hole connected in back clearance chamber it is additionally provided with the piston lower portion cavity in cylinder sleeve on piston only，Be embedded with in this pilot hole match with pilot hole put inserts，This puts inserts is the concrete dynamic modulus goods that powdered metallurgical material is made，Put some fine pores within inserts to be formed and dredge passage by put the conducting of inserts two ends.
Wherein, putting inserts described in is that copper and tin base powder metallurgy material is made.The concrete dynamic modulus goods that copper and tin base powder metallurgy material is made, its internal void size is 0.01-0.1mm, even pore distribution, advantageously forms the passage of dredging of two ends connection, and piston is altered under differential pressure action oil process, and this dredges passage discharge.And this puts inserts without carrying out fine design by special equipment, efficiently solve piston and put fine through hole the processing difficult problem, beneficially processing and fabricating of inserts.
Further, the two ends putting inserts described in are provided with oil suction sponge, in order to absorb storage piston and alter oil.
Wherein, described compression is two, respectively first gas ring groove and second gas ring groove, and first gas ring groove is arranged at above second gas ring groove, being equiped with first gas ring and second gas ring in first gas ring groove and second gas ring groove respectively, described through hole is arranged in first gas ring groove and/or second gas ring groove.Preferably, pilot hole is multiple, is all embedded with and puts inserts in each pilot hole, and the plurality of pilot hole is distributed along the even circumferential of compression.
Further, described compression ring and described oil ring are and are provided with the elastic open loop structure taking mouth.
Use after technique scheme, this utility model the most advantageously:
A kind of flush type Anti-blow by piston structure described in the utility model, piston is provided with and seals the compression ring and oil ring coordinated with inboard wall of cylinder liner, wherein oil ring is oily so that piston is played lubrication for inboard wall of cylinder liner cloth, oil ring is additionally operable to remove most of fluid of inboard wall of cylinder liner attachment simultaneously, compression ring is used for hermetic seal between piston and inboard wall of cylinder liner, it is ensured that the compressed air of upper piston area cavity output normal pressure.Owing to compression ring is movably set in compression, thus when piston along cylinder sleeve descending time, upper piston area cavity air-breathing is negative pressure state, the air pressure of piston lower portion cavity is more than the air pressure of upper piston area cavity, and the upper surface that the friction and inertia power between compression ring and inboard wall of cylinder liner forces compression ring fits tightly with compression upper wall, now back clearance chamber is connected with spatia by the clearance channel of compression ring bottom, the fluid scurried in spatia by oil ring enters back clearance chamber through this clearance channel, the part fluid of back clearance intracavity utilizes the passage of dredging putting inserts to enter into the oil pocket of piston lower portion；When piston along cylinder sleeve up time, upper piston area cavity is sealed into pressurized state, the air pressure of upper piston area cavity is much larger than the air pressure of piston lower portion cavity, and the lower surface that the friction and inertia power between compression ring and inboard wall of cylinder liner forces compression ring fits tightly with compression lower wall, now back clearance chamber is connected with the air cavity of upper piston area by the clearance channel on compression ring top, and the passage of dredging that the fluid that back clearance intracavity is retained is constituted through putting the internal some fine pores of inserts under differential pressure action power enters into the oil pocket of piston lower portion.This utility model uses the mode with prior art antipodal " dredging " (dredging) to solve to alter the technical problem of oil, it utilizes pressure reduction that air compressor machine or internal combustion engine pressure process produces and alters oil by dredge that passage removes piston back clearance intracavity, it slightly reduces compression ratio, use air compressor machine compression ratio of the present utility model only low by about 2% than conventional air compressor machine through test, but the piston that this utility model fundamentally solves air compressor machine or internal combustion engine alters oil problem, the service life making air compressor machine or internal combustion engine is longer, runs more stable.It is drilled with fine through hole owing to not will pass through conventional boring machine on piston only, use this utility model can first pass through powder metallurgical sintering process make internal there is minute aperture put inserts, again this is put inserts to be fitted in the pilot hole of piston, be so easy to processing and fabricating.
Accompanying drawing explanation
With embodiment, this utility model is further illustrated below in conjunction with the accompanying drawings:
Fig. 1 is the sectional structure schematic diagram of duty of the present utility model；
Fig. 2 is the structural representation of the piston stroking upward state in Fig. 1 shown in A；
Fig. 3 is the structural representation of descent of piston state of the present utility model；
Fig. 4 is the schematic diagram of another structure of the present utility model.
In figure: 1. cylinder sleeve；2. piston；3. spatia；4. compression；41. first gas ring grooves；42. second gas ring grooves；5. oil ring groove；6. compression ring；61. first gas rings；62. second gas rings；7. oil ring；8. spill port；9. back clearance chamber；10. clearance channel；11. pilot holes；12. put inserts；13. oil suction sponges.
Detailed description of the invention
The following stated is only preferred embodiment of the present utility model, the most therefore limits protection domain of the present utility model.
nullSee Fig. 1-Fig. 4，A kind of flush type Anti-blow by piston structure，Including the piston 2 being arranged in cylinder sleeve 1，Between piston 2 outer wall and cylinder sleeve 1 inwall, there is spatia 3，Piston 2 outer wall is provided with compression 4 and oil ring groove 5 from top to bottom，The compression ring 6 coordinated with cylinder sleeve 1 inner wall sealing it is equiped with in compression 4，Wherein，Described compression 4 is two，It is respectively first gas ring groove 41 and second gas ring groove 42，First gas ring groove 41 is arranged at above second gas ring groove 42，First gas ring 61 and second gas ring 62 it is equiped with respectively in first gas ring groove 41 and second gas ring groove 42，Compression ring 6 is for hermetic seal between piston 2 and cylinder sleeve 1 inwall，Ensure the compressed air of piston 2 upper chamber output normal pressure，The oil ring 7 coordinated with cylinder sleeve 1 inner wall sealing it is equiped with in oil ring groove 5，Oil ring 7 wall cloth in cylinder sleeve 1 is oily so that piston 2 is played lubrication，Oil ring 7 is additionally operable to remove most of fluid of cylinder sleeve 1 inwall attachment simultaneously，Preferably，Spill port 8 it is additionally provided with in oil ring groove 5.In the present embodiment, described compression ring 6 and described oil ring 7 are and are provided with the elastic open loop structure taking mouth, it is simple to assembling, with wear-resistant, keeps permanent sealing.
The piston 2 of the present embodiment is provided with the pilot hole 11 connected in back clearance chamber 9 with piston 2 lower cavity in cylinder sleeve 1, be embedded with in this pilot hole 11 match with pilot hole 11 put inserts 12, this puts the concrete dynamic modulus goods that inserts 12 is made for powdered metallurgical material, puts some fine pores within inserts 12 and is formed and dredge passage by put the conducting of inserts 12 two ends.Wherein, put inserts 12 described in make for copper and tin base powder metallurgy material.The concrete dynamic modulus goods that copper and tin base powder metallurgy material is made, its internal void size is 0.01-0.1mm, even pore distribution, advantageously forms the passage of dredging of two ends connection, and under differential pressure action, through this, oil of altering of piston 2 is dredged passage discharge.And this puts inserts 12 without carrying out fine design by special equipment, efficiently solve piston 2 and put fine through hole the processing difficult problem, beneficially processing and fabricating of inserts 12.
Further, the described two ends putting inserts 12 are provided with oil suction sponge 13, so that absorbing storage piston to alter oil, fluid is adsorbed on oil suction sponge 13, oil suction sponge 13 is close to the two ends putting inserts 12, fluid is conducive to be fully contacted with the end face putting inserts 12, so that fluid is easier to enter in the inside fine pore putting inserts 12.Wherein pilot hole 11 can also be piston 2 body inner bending intercommunicating pore, see Fig. 4, pilot hole 11 includes the cross drilling laterally pierced from first gas ring groove 41 and the vertical boring vertically pierced bottom piston 2, and cross drilling connects with vertically holing, and this favourable piston of Drilling operation mode 2 is processed.
nullCompression ring 6 is movably set in compression 4，Movable setting is that a compression ring 6 can move up and down in compression 4，It is formed with back clearance chamber 9 between compression ring 6 and compression 4 sidewall，It is formed with, between compression ring 6 and compression 4 upper wall and/or compression 4 lower wall, the clearance channel 10 back clearance chamber 9 and spatia 3 turned on，Described pilot hole 11 is arranged in first gas ring groove 41 and/or second gas ring groove 42，In the present embodiment，Described pilot hole 11 is arranged in first gas ring groove 41，The anti-channeling oil effect that pilot hole 11 is arranged in first gas ring groove 41 is better than being arranged at second gas ring groove 42，In the fluid scurried into from oil ring 7 first passes around second gas ring groove 42, compression ring 6 stops，Here second gas ring 62 acts on identical with the second gas ring 62 in prior art piston 2，For hermetic seal and removal major part fluid，The back clearance chamber 9 of second gas ring groove 42 is for altering the buffering cavity of oil between oil ring 7 and first gas ring 61，The fluid the most upwards scurried into after second gas ring 62 enters the back clearance chamber 9 of first gas ring groove 41，Last under differential pressure effect, it is back to piston 2 lower cavity from dredging passage 13.Described pilot hole 11 is multiple, is all embedded with and puts inserts 12 in each pilot hole 11, and the plurality of pilot hole 11 is distributed along the even circumferential of compression 4.
See Fig. 2, when piston 2 along cylinder sleeve 1 up time, piston 2 upper chamber is sealed into pressurized state, the air pressure of piston 2 upper chamber is much larger than the air pressure of piston 2 lower cavity, and the lower surface that the friction and inertia power between compression ring 6 and cylinder sleeve 1 inwall forces compression ring 6 fits tightly with compression 4 lower wall, now back clearance chamber 9 is connected with the air cavity on piston 2 top by the clearance channel 10 on compression ring 6 top, due to spatia 3, clearance channel 10 and dredge passage 13 and be areola structure, can gradually decay when air pressure passes through, therefore piston 2 upper chamber air pressure P1 ＞ spatia 3 air pressure P2 ＞ back clearance chamber 9 air pressure P3 ＞ piston 2 lower cavity air pressure P4, the fluid retained in back clearance chamber 9 under differential pressure action power from the oil pocket dredging passage 13 and entering into piston 2 bottom.
See Fig. 3, when piston 2 along cylinder sleeve 1 descending time, piston 2 upper chamber air-breathing is negative pressure state, the air pressure of piston 2 lower cavity is more than the air pressure of piston 2 upper chamber, and the upper surface that the friction and inertia power between compression ring 6 and cylinder sleeve 1 inwall forces compression ring 6 fits tightly with compression 4 upper wall, now back clearance chamber 9 is connected with spatia 3 by the clearance channel 10 of compression ring 6 bottom, the fluid scurried in spatia 3 by oil ring 7 enters back clearance chamber 9 through this clearance channel 10, part fluid in back clearance chamber 9 enters into the oil pocket of piston 2 bottom through the passage 13 of dredging connected with piston 2 lower cavity in cylinder sleeve 1.
This utility model uses the mode with prior art antipodal " dredging " to solve to alter the technical problem of oil, it utilizes pressure reduction that air compressor machine or internal combustion engine pressure process produces and removes and alter oil by dredging passage 13 in piston 2 back clearance chamber 9, it slightly reduces compression ratio, use air compressor machine compression ratio of the present utility model only low by about 2% than conventional air compressor machine through test, but the piston 2 that this utility model fundamentally solves air compressor machine or internal combustion engine alters oil problem, the service life making air compressor machine or internal combustion engine is longer, runs more stable.
Embodiment described above is not limited to this utility model, for a person skilled in the art, within spirit of the present utility model and principle, wherein portion of techniques feature is carried out equivalent, within should be included in protection domain of the present utility model.
Claims (6)
1. a novel flush type Anti-blow by piston structure, including the piston (2) being arranged in cylinder sleeve (1), piston (2)
There is between outer wall and cylinder sleeve (1) inwall spatia (3), piston (2) outer wall be provided with from top to bottom compression (4) and
Oil ring groove (5), is equiped with the compression ring (6) coordinated with cylinder sleeve (1) inner wall sealing, oil ring groove (5) in compression (4)
Inside it is equiped with the oil ring (7) coordinated with cylinder sleeve (1) inner wall sealing, it is characterised in that: compression ring (6) is movably set in gas
In annular groove (4), between compression ring (6) and compression (4) sidewall, it is formed with back clearance chamber (9), compression ring (6) and compression ring
Gap back clearance chamber (9) and spatia (3) turned on it is formed with between groove (4) upper wall and/or compression (4) lower wall
Passage (10), piston (2) body is additionally provided with by back clearance chamber (9) and piston (2) lower cavity in cylinder sleeve (1)
Connection pilot hole (11), be embedded with in this pilot hole (11) with pilot hole (11) match put inserts (12),
This puts inserts (12) is the concrete dynamic modulus goods that powdered metallurgical material is made, and puts some fine pore shapes that inserts (12) is internal
Become to put the conducting of inserts (12) two ends dredges passage.
Novel flush type Anti-blow by piston structure the most according to claim 1, it is characterised in that put inserts (12) described in:
Make for copper and tin base powder metallurgy material.
Novel flush type Anti-blow by piston structure the most according to claim 1 and 2, it is characterised in that put embedding described in:
The two ends of part (12) are provided with oil suction sponge (13).
Novel flush type Anti-blow by piston structure the most according to claim 2, it is characterised in that: described compression (4)
Being two, respectively first gas ring groove (41) and second gas ring groove (42), first gas ring groove (41) is arranged at the second gas
Annular groove (42) top, be equiped with respectively in first gas ring groove (41) and second gas ring groove (42) first gas ring (61) and
Second gas ring (62), described pilot hole (11) is arranged in first gas ring groove (41) and/or second gas ring groove (42).
Novel flush type Anti-blow by piston structure the most according to claim 2, it is characterised in that: described pilot hole (11)
For multiple, being all embedded with and put inserts (12) in each pilot hole (11), the plurality of pilot hole (11) is along compression (4)
Even circumferential distribution.
Novel flush type Anti-blow by piston structure the most according to claim 1, it is characterised in that: described compression ring (6)
It is with described oil ring (7) and is provided with the elastic open loop structure taking mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620270124.6U CN205503396U (en) | 2016-04-01 | 2016-04-01 | Novel oil leakage piston structure is prevented to flush type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620270124.6U CN205503396U (en) | 2016-04-01 | 2016-04-01 | Novel oil leakage piston structure is prevented to flush type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205503396U true CN205503396U (en) | 2016-08-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620270124.6U Withdrawn - After Issue CN205503396U (en) | 2016-04-01 | 2016-04-01 | Novel oil leakage piston structure is prevented to flush type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205503396U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105697338A (en) * | 2016-04-01 | 2016-06-22 | 奉化市鼎联汽车空压机厂 | Novel built-in oil expelling prevention piston structure |
-
2016
- 2016-04-01 CN CN201620270124.6U patent/CN205503396U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105697338A (en) * | 2016-04-01 | 2016-06-22 | 奉化市鼎联汽车空压机厂 | Novel built-in oil expelling prevention piston structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160824 Effective date of abandoning: 20180306 |
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| AV01 | Patent right actively abandoned |