SU634693A3 - Shaft sealing cup - Google Patents
Shaft sealing cupInfo
- Publication number
- SU634693A3 SU634693A3 SU762388115A SU2388115A SU634693A3 SU 634693 A3 SU634693 A3 SU 634693A3 SU 762388115 A SU762388115 A SU 762388115A SU 2388115 A SU2388115 A SU 2388115A SU 634693 A3 SU634693 A3 SU 634693A3
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- protrusion
- cuff
- main
- return device
- additional
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3244—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with hydrodynamic pumping action
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3232—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Sealing With Elastic Sealing Lips (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
- Sealing Devices (AREA)
Description
(54) МАНЖЕТА ДЛЯ УПЛОТНЕНИЯ ВАЛА(54) CANDS FOR SEAL SHAFT
Изобретение относитс к уплотнигельной технике.This invention relates to sealing technology.
Известна манжета дл уплотнени вала с уплотн ющей закраиной, на рабочей поверхности которой выполнен ребра или канавки в форме спиральной нарезк;1, и дополнительной не соприкасающейс с поверхностью вала уплотн ющей закраиной со спиральными ребрами или канавками, направленными с противоположным наклоном l . Дополнительна закраина при изменении направлени вращени уплотн емого вала, то есть при возникновении накачивающего действи спиральных канавок или ребер на рабочей поверхности уплотн ющей закраины, создает поток воздуха в осевом направлении к уплотн ющей закраине уплотнени и оттесн ет утечку жидкости назад в уплотн емую полость. Такие манжеты примен ют дл уплотнени вала независимо от направлени .вращени .The known cuff for sealing the shaft with a sealing edge, on the working surface of which there are ribs or grooves in the form of a spiral thread; 1, and an additional seal that does not come into contact with the shaft surface with the spiral edges or grooves directed with the opposite inclination l. An additional rim when changing the direction of rotation of the compacted shaft, i.e. when the pumping action of the spiral grooves or ribs occurs on the working surface of the sealing rim, creates air flow in the axial direction to the sealing rim of the seal and pushes the fluid back into the sealed cavity. Such cuffs are used to seal the shaft irrespective of the direction of rotation.
Кроме этого, известна уплотн юща манжета дл валов с главным и дополнительным выступами, причем на этих выступах сделаны скрученные или же направленные вперекрест канавки дл оттеснени уплотн емой среды. Оттесн ющее действие канавок к дополнительной закраине превышает оттесн ющее действие канавок в главной закраине , так что при вращении вала в пространстве между дополнительной и главной закраинами создаетс повышенное давление, которое должно оттесн ть уплотн емую среду 2 .In addition, there is a known sealing cuff for shafts with main and additional protrusions, and on these projections there are made twisted or cross-facing grooves for pushing the sealing medium. The suppressing effect of the grooves to the additional rim exceeds the pushing effect of the grooves in the main rim, so that when the shaft rotates in the space between the secondary and main ribs, an increased pressure is created which must push the compressed medium 2.
В известных манжетах возвратные приспособлени на дополнительных выступах часто,забиваютс из-за отложени загр знений и перестают действовать . Кроме того, скрученные ребра на поверхности скольжени главного выступа со стороны воздуха образуют In known cuffs, the return devices on the additional protrusions are often clogged due to the deposition of contaminants and no longer work. In addition, the twisted ribs on the sliding surface of the main protrusion on the air side form
5 острый угол их к поверхностивала, в результате получаетс относительно широка зона скольжени на уплотн ющем выступе и, следовательно, относительно низкое уплотн ющее давление.5, their acute angle to the surface, as a result, a relatively wide sliding zone on the sealing lip and, consequently, a relatively low sealing pressure is obtained.
00
Цель изобретени - повысить эффективность уплотнени .The purpose of the invention is to improve the efficiency of compaction.
Дл этого в предлагаемой манжете возвратное устройство установлено между главными и дополнительными выс5 тупами .For this, in the proposed cuff, a return device is installed between the main and additional heights.
Установленное отдельно от главного и дополнительного выступов возвратное устройство позвол ет свободно оформить главный выступ, особенно профиль A return device installed separately from the main and additional protrusions allows the main projection to be freely formed, especially the profile.
Claims (2)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19752536278 DE2536278A1 (en) | 1975-08-14 | 1975-08-14 | OIL SEAL WITH A RECOVERY DEVICE |
Publications (1)
Publication Number | Publication Date |
---|---|
SU634693A3 true SU634693A3 (en) | 1978-11-25 |
Family
ID=5953994
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU762388115A SU634693A3 (en) | 1975-08-14 | 1976-08-13 | Shaft sealing cup |
Country Status (6)
Country | Link |
---|---|
JP (1) | JPS5222650A (en) |
DE (1) | DE2536278A1 (en) |
FR (1) | FR2321078A1 (en) |
GB (1) | GB1541264A (en) |
IT (1) | IT1062919B (en) |
SU (1) | SU634693A3 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE404414B (en) * | 1977-02-25 | 1978-10-02 | Alfa Laval Ab | DEVICE FOR DISHING A FIRST SEAL RING AND A SPACE NEARLY NEXT THE SEAL RING |
JPS55103151A (en) * | 1979-01-30 | 1980-08-07 | Nissan Motor Co Ltd | Oil leakage preventing device for automobile transmission gear |
US4556225A (en) * | 1983-04-13 | 1985-12-03 | Chicago Rawhide Mfg. Co. | Reverse lip positive venting seal |
MX169810B (en) * | 1988-03-21 | 1993-07-27 | Chicago Rawhide Mfg Co | COMPOSITE SEAL SET |
IT1313151B1 (en) * | 1999-08-04 | 2002-06-17 | Rft Spa | SEALING COMPLEX FOR A MECHANICAL ORGAN IN MOVEMENT ALTERNATIVELY IN RESPECT OF A RELATIVE SLIDING SEAT, IN PARTICULAR FOR ONE |
JP2004251442A (en) * | 2003-01-30 | 2004-09-09 | Nok Corp | Sealing device |
CN1853063B (en) * | 2003-09-19 | 2010-06-23 | Nok株式会社 | Sealing device |
JP6013230B2 (en) * | 2013-02-27 | 2016-10-25 | 株式会社小松製作所 | Oil seal |
-
1975
- 1975-08-14 DE DE19752536278 patent/DE2536278A1/en active Pending
-
1976
- 1976-05-05 IT IT23004/76A patent/IT1062919B/en active
- 1976-06-18 JP JP51071269A patent/JPS5222650A/en active Pending
- 1976-07-29 FR FR7623188A patent/FR2321078A1/en active Granted
- 1976-08-04 GB GB32450/76A patent/GB1541264A/en not_active Expired
- 1976-08-13 SU SU762388115A patent/SU634693A3/en active
Also Published As
Publication number | Publication date |
---|---|
IT1062919B (en) | 1985-02-11 |
JPS5222650A (en) | 1977-02-21 |
FR2321078B3 (en) | 1979-04-27 |
FR2321078A1 (en) | 1977-03-11 |
GB1541264A (en) | 1979-02-28 |
DE2536278A1 (en) | 1977-02-24 |
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