CN104534097B - A kind of kinetic pressure balancing rotating seal - Google Patents
A kind of kinetic pressure balancing rotating seal Download PDFInfo
- Publication number
- CN104534097B CN104534097B CN201410833766.8A CN201410833766A CN104534097B CN 104534097 B CN104534097 B CN 104534097B CN 201410833766 A CN201410833766 A CN 201410833766A CN 104534097 B CN104534097 B CN 104534097B
- Authority
- CN
- China
- Prior art keywords
- sealing
- rigid
- sealing ring
- seal
- pressure balancing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
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
- F16J15/164—Sealings between relatively-moving surfaces the sealing action depending on movements; pressure difference, temperature or presence of leaking fluid
-
- 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
- F16J15/26—Sealings between relatively-moving surfaces with stuffing-boxes for rigid sealing rings
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Abstract
The invention belongs to technical field of sealing technology.Using, to " pump action " of the fluid full of seal clearance, the pressure that second lip of seal is born is reduced when helixseal principle and rotation, by multiple-sealed collaboration, the reliable sealing under high-voltage high-speed sealing working condition is realized.Kinetic pressure balancing rotating seal of the present invention is two-lid sealing structure, is made of rigid sealing ring (1) and oil sealing (2), it is characterised in that：The sealing surface band backflash (3) of rigid sealing ring (1), seal clearance are not more than 1mm；Rigid sealing ring is located at oily side.The sealing element designability is strong, and sealing reliability is good, and service life is long, is suitable for high pressure rotary sealing occasion, and the high speed high pressure rotating especially suitable for axis/cylinder body seals, and is suitable for 0.05MPa~2MPa, the reliable sealing of 10m/s~40m/s harshness working conditions.
Description
Technical field
The invention belongs to technical field of sealing technology, are related to rotatory sealing technology, more particularly to high-voltage high-speed rotatory sealing technology.
Background technology
Rotary shaft oil seal generally comprises flexible rubber lip, skeleton and spring, flexible rubber lip and sealing axis interference fit, bullet
Spring, which provides, stablizes radial load, and sealing lip generates enclasping force to rotary shaft, and to prevent fluid leakage, the oil sealing with secondary lip can be with
Prevent external dust from invading.Oil sealing carries metallic framework, the stabilization for sealing element and fastening, and oil sealing is to equipment power, transmission
System functional reliability plays an important roll.
General oil sealing bears pressure energy force difference, and oil sealing deforms when pressure is excessive, mostly uses the resistance to of pressure-resistant support ring or reinforcement
Pressure oil is sealed.Common oil sealing linear velocity (0~15) m/s, operating pressure (0~0.05) MPa belong to high-speed sealing more than 15m/s,
0.05MPa or more belongs to high pressure sealing.
Existing oil sealing sealing position serious wear under the conditions of high speed and high pressure；High speed rotation followability is poor, and general oil sealing exists
Working life is short when high-voltage high-speed, poor reliability, can not adapt to high speed and high pressure operating mode requirement.
Conventional high-pressure oil sealing, which uses, to be extended metallic framework length, reduces waist, increases waist thickness or increase in waist
Add the method for supporter, can effectively solve the problems, such as that pressure 0.5MPa or less, speed are less than the high pressure sealing of 5m/s, but for simultaneously
High-voltage high-speed sealing problem is helpless.
Conventional high speed rotation oil sealing generally improves product by reducing oil sealing waist thickness or increasing the modes such as waist
Followability under high speed rotation operating mode, or reflux line is added in the lip of oil sealing on the basis of common oil sealing, with power reflux formation
Improve adaptability of the product under high rotational speeds.Conventional high speed rotation oil sealing voltage endurance capability is generally no greater than
0.03MPa。
ZL 94105702.x disclose a kind of static balance combined high pressure rotary shaft oil seal, by with the close of seal lip
Feng Ti, radial set collar, axial bearing plate, radial compensation ring and O-ring seal composition, the outer ring surface and radial compensation of seal
An annular space is formed between ring, and is sealed by O-ring, and it is empty that another annular is formed between seal and the outer surface of rotary shaft
Between, two annular space sealings are in fluid communication, and seal inner ring surface and outer ring surface are among sealing fluid, quiet suffered by seal
Pressure balance is in a basic balance, to adapt to high pressure sealing environment.By seal with compensation ring along bearing plate relatively radially
The large eccentricity and antivibration kinetic force of motion compensation axis.But adaptability and followability are bad when rotating at high speed for the sealing.
Invention content
The purpose of the present invention is to provide a kind of rotating seals suitable for high-voltage high-speed operating mode.
The object of the present invention is achieved like this, using helixseal principle, by the setting of sealing fluid end and rotation
The band reverse acting spiral slot rigid sealing ring that certain interval is formed between axis forms two-lid sealing structure, rigid sealing ring and rotation
Axis surface forms certain thickness oil film, using spiral groove on surface when rotated to " the pumping work of the fluid full of seal clearance
With ", the pressure that second lip of seal is born is reduced, by multiple-sealed collaboration, realizes and is sealed under working condition in high-voltage high-speed
Reliable sealing.Meanwhile by the sealing face piece preset clearance in rigid sealing ring and axis/chamber, the mechanical friction of the two is avoided,
Effectively improve the service life of sealing article.
Kinetic pressure balancing rotating seal of the present invention is two-lid sealing structure, by 2 groups of rigid sealing ring 1 and oil sealing
At, it is characterised in that：The sealing surface band backflash 3 of rigid sealing ring 1, seal clearance are not more than 1mm；Rigid sealing ring is located at oil
Side, structure is as shown in attached drawing 1~6.
Kinetic pressure balancing rotating seal of the present invention is two-lid sealing structure, by 2 groups of rigid sealing ring 1 and oil sealing
At, it is characterised in that：The sealing surface band backflash 3 of rigid sealing ring 1, seal clearance are not more than 1mm；Rigid sealing ring is located at oil
Side；The backflash is helicla flute.
Kinetic pressure balancing rotating seal of the present invention is two-lid sealing structure, by 2 groups of rigid sealing ring 1 and oil sealing
At, it is characterised in that：The helical angle of the helicla flute is between 2 °~30 °.
Kinetic pressure balancing rotating seal of the present invention is two-lid sealing structure, by 2 groups of rigid sealing ring 1 and oil sealing
At, it is characterised in that：The reflux groove depth is between 0.05mm~1.0mm.
Kinetic pressure balancing rotating seal of the present invention is two-lid sealing structure, by 2 groups of rigid sealing ring 1 and oil sealing
At, it is characterised in that：Seal clearance 0.05mm~the 0.5mm；Spiral groove depth is between 0.1mm~1.0mm, helical angle
Between 5 °~25 °.
Kinetic pressure balancing rotating seal of the present invention is two-lid sealing structure, by 2 groups of rigid sealing ring 1 and oil sealing
At, it is characterised in that：The seal f ace width of rigid sealing ring is not less than 3mm.
Kinetic pressure balancing rotating seal of the present invention is two-lid sealing structure, by 2 groups of rigid sealing ring 1 and oil sealing
At, it is characterised in that：The seal f ace width of rigid sealing ring is between 3mm~8mm of sealing surface.
Kinetic pressure balancing rotating seal of the present invention is two-lid sealing structure, by 2 groups of rigid sealing ring 1 and oil sealing
At, it is characterised in that：Oil sealing outer diameter, structure such as 4~6 institute of attached drawing are not more than for assembly type sealing element rigid sealing ring outer diameter
Show.
Kinetic pressure balancing rotating seal of the present invention is two-lid sealing structure, by 2 groups of rigid sealing ring 1 and oil sealing
At, it is characterised in that：For assembled sealing element, rigid sealing ring outer diameter is interference fitted with positioning surface 4 in oil sealing, and structure is for example attached
Fig. 1, shown in 2.
Kinetic pressure balancing rotating seal of the present invention is two-lid sealing structure, by 2 groups of rigid sealing ring 1 and oil sealing
At, it is characterised in that：3 rectangular cross-section of rigid sealing ring backflash, triangle, it is trapezoidal in one kind.
Kinetic pressure balancing rotating seal of the present invention is two-lid sealing structure, by 2 groups of rigid sealing ring 1 and oil sealing
At, it is characterised in that：The material of the rigid sealing ring is the engineering plastics such as polyimides or polyether-ether-ketone ring.
Kinetic pressure balancing rotating seal of the present invention is two-lid sealing structure, by 2 groups of rigid sealing ring 1 and oil sealing
At, it is characterised in that：The material of the flexible lip seal lip is the flexibilities such as fluorubber, nitrile rubber or tetrafluoroethene system
Material.
Kinetic pressure balancing rotating seal of the present invention, designability is strong, and sealing reliability is good, and service life is long, fits
For high pressure rotary sealing occasion, the high speed high pressure rotating especially suitable for axis/cylinder body seals, and is suitable for 0.05MPa~2MPa,
The reliable sealing of 10m/s~40m/s harshness working conditions.
Description of the drawings
A kind of Fig. 1 kinetic pressure balancing rotation shaft seal integral installation distribution structure schematic diagrams of the present invention
A kind of Fig. 2 kinetic pressure balancing rotation shaft seal integral installation distribution structure schematic diagrams of the present invention
A kind of Fig. 3 kinetic pressure balancing rotation shaft seal assembly structure diagrams of the present invention
A kind of Fig. 4 kinetic pressure balancing rotation shaft seal assembly structure diagrams of the present invention
A kind of Fig. 5 kinetic pressure balancing lips axis rotating seal assembly structure diagrams of the present invention
A kind of Fig. 6 kinetic pressure balancing lips rotating hole sealing element assembly structure diagrams of the present invention
Wherein：1- rigid sealing rings, 2- oil sealings, 3- backflashes, positioning surface in 4- oil sealings, 5- lips, 6- axis, 7- cavitys.
Specific implementation mode
Below by taking typical rotatory sealing product as an example, invention content is described further in conjunction with specific embodiments, but not
As the limitation to invention content.
Embodiment one
A kind of overall assembled kinetic pressure balancing rotating seal, structure is as shown in attached 1.
Oil sealing specification Φ 90-120-12, lip design return wire.
Rigid sealing ring assembles width 7mm；Rigid sealing ring outer diameter is interference fitted on the inside of oil sealing 4；Rigid sealing ring is close
Cover is rectangle backflash, seal f ace width width 3mm, rigid sealing ring and rotation shaft clearance 0.05mm, 2 ° of helical angle, spiral
Groove depth 1.0mm.
Rigid sealing ring 1 and the assembly of rubber oil sea 2 are integrated, sealing element of the present invention is obtained.
The sealing element is under the conditions of sealed pressure 1.2MPa, linear velocity 20m/s, experiment examination 48h No leakages.
It is used alone with money oil sealing, under similarity condition, 5min oil sealings, that is, gross distortion causes to reveal.
Embodiment two
A kind of overall assembled kinetic pressure balancing rotating seal, structure are as shown in Fig. 2.
Oil sealing specification Φ 90-120-12, lip design return wire.
Rigid sealing ring assembles width 6mm；Rigid sealing ring outer diameter is interference fitted on the inside of oil tight skeleton；Rigid sealing ring
Sealing surface be rectangle backflash, seal f ace width 4mm, the gap 0.1mm between rigid sealing ring and rotary shaft, 15 ° of helical angle,
Spiral groove depth 0.8mm.
Rigid sealing ring 1 and the assembly of polytetrafluoroethyloil oil seals 2 are integrated, sealing element of the present invention is obtained.
The sealing element is in sealed pressure 0.3MPa, linear velocity 40m/s, 48h No leakage.
Embodiment three
A kind of assembly type kinetic pressure balancing rotating seal, structure are as shown in Fig. 3.
Oil sealing specification Φ 170-200-15, lip design return wire.
Rigid sealing ring outer diameter is identical as cavity internal diameter；Rigid sealing ring sealing surface is rectangle backflash, rigid sealing ring
Seal f ace width 10mm；Gap 0.5mm between rigid sealing ring and rotary shaft, 20 ° of helical angle, spiral groove depth 0.2mm.
Rigid sealing ring 1 and rubber oil sea 2 are assembled into one, sealing element of the present invention is obtained.
The sealing element is in sealed pressure 0.5MPa, linear velocity 20m/s, 48h No leakage.
Example IV
A kind of assembly type kinetic pressure balancing rotating seal, structure are as shown in Fig. 4.
Oil sealing specification Φ 80-100-10, lip design return wire.
Rigid sealing ring outer diameter is identical as cavity internal diameter；Rigid sealing ring sealing surface is rectangle backflash, rigid sealing ring
Seal f ace width 4mm；Gap 0.2mm between rigid sealing ring and rotary shaft, 30 ° of helical angle, spiral groove depth 0.05mm.
Rigid sealing ring 1 and polytetrafluoroethyloil oil seals 2 are assembled into one, sealing element of the present invention is obtained.
The sealing element is in sealed pressure 0.8MPa, linear velocity 25m/s, 48h No leakage.
Embodiment five
A kind of assembly type kinetic pressure balancing rotating seal, one of rigid sealing ring, twice rubber lip oil sealing, structure are for example attached
Shown in Fig. 5.
Oil sealing specification Φ 80-100-10, lip design return wire.
Rigid sealing ring outer diameter is identical as cavity internal diameter；Rigid sealing ring sealing surface is rectangle backflash, rigid sealing ring
Seal f ace width 5mm；Gap 0.12mm between rigid sealing ring and rotary shaft, 25 ° of helical angle, spiral groove depth 0.6mm.
Rigid sealing ring 1 and rubber oil sea 2 are assembled into one, sealing element of the present invention is obtained.
The sealing element is in sealed pressure 2MPa, linear velocity 15m/s, 48h No leakage.
Embodiment six
A kind of assembly type kinetic pressure balancing rotating seal, seal form are hole-sealing, and structure is as shown in Fig. 6.
Oil sealing specification Φ 170-190-15, lip design return wire.
Rigid sealing ring sealing surface internal diameter is identical as the diameter of axle；Rigid sealing ring sealing surface is rectangle backflash, rigid seal
Ring seal f ace width 8mm；Gap 1.0mm between rigid sealing ring and rotating drum, 5 ° of helical angle, spiral groove depth 0.5mm.
Rigid sealing ring 1 and rubber oil sea 2 are assembled into one, sealing element of the present invention is obtained.
The sealing element is in sealed pressure 0.05MPa, linear velocity 10m/s, 48h No leakage.
Claims (10)
1. a kind of kinetic pressure balancing rotating seal is two-lid sealing structure, is made of rigid sealing ring (1) and oil sealing (2), special
Sign is：The sealing surface band backflash (3) of rigid sealing ring (1), seal clearance are not more than 1mm；Rigid sealing ring is located at oily side.
2. kinetic pressure balancing rotating seal according to claim 1, it is characterised in that：The backflash (3) is helicla flute.
3. kinetic pressure balancing rotating seal according to claim 2, it is characterised in that：The helical angle of the helicla flute between
Between 2 °~30 °.
4. according to the kinetic pressure balancing rotating seal described in 1,2,3 any one of claim, it is characterised in that：The backflash
Depth is between 0.05mm~1.0mm.
5. kinetic pressure balancing rotating seal according to claim 2, is characterized in that：The seal clearance be 0.05mm~
0.5mm；Spiral groove depth is between 0.2mm~1.0mm, and helical angle is between 5 °~25 °.
6. according to the kinetic pressure balancing rotating seal described in 1,2,3 any one of claim, it is characterised in that：Rigid sealing ring
Seal f ace width be not less than 3mm.
7. kinetic pressure balancing rotating seal according to claim 6, it is characterised in that：The seal f ace width of rigid sealing ring
Between 3mm~8mm.
8. according to the kinetic pressure balancing rotating seal described in 1,2,3,5 any one of claim, it is characterised in that：For assembling
Formula sealing element, rigid sealing ring outer diameter are not more than oil sealing outer diameter.
9. according to the kinetic pressure balancing rotating seal described in 1,2,3,5 any one of claim, it is characterised in that：For assembly
Formula sealing element, rigid sealing ring outer diameter are interference fitted with positioning surface (4) in oil sealing.
10. according to the kinetic pressure balancing rotating seal described in 1,2,3,5 any one of claim, it is characterised in that：It is described rigid
Backflash (3) rectangular cross-section of property sealing ring, triangle, it is trapezoidal in one kind.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410833766.8A CN104534097B (en) | 2014-12-26 | 2014-12-26 | A kind of kinetic pressure balancing rotating seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410833766.8A CN104534097B (en) | 2014-12-26 | 2014-12-26 | A kind of kinetic pressure balancing rotating seal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104534097A CN104534097A (en) | 2015-04-22 |
| CN104534097B true CN104534097B (en) | 2018-10-26 |
Family
ID=52849683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410833766.8A Active CN104534097B (en) | 2014-12-26 | 2014-12-26 | A kind of kinetic pressure balancing rotating seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104534097B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087556B (en) * | 2016-11-23 | 2021-03-30 | 舍弗勒技术股份两合公司 | Box type sealing structure |
| CN108569130A (en) * | 2017-03-09 | 2018-09-25 | 舍弗勒技术股份两合公司 | Hub driving mechanism |
| DE102017006528A1 (en) * | 2017-07-11 | 2019-01-17 | Carl Freudenberg Kg | seal |
| CN110397741B (en) * | 2019-08-28 | 2024-04-26 | 东营海森密封技术有限责任公司 | Shaft end mechanical sealing device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1643276A (en) * | 2002-03-26 | 2005-07-20 | 联邦莫沃尔公司 | Shaft seal |
| CN203245374U (en) * | 2013-04-28 | 2013-10-23 | 郭建文 | Spindle box |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2931009B2 (en) * | 1990-01-25 | 1999-08-09 | エヌオーケー株式会社 | Sealing device and method of manufacturing sealing device |
| CN1086222C (en) * | 1994-05-24 | 2002-06-12 | 杜长春 | Static pressure balance combined high-pressure rotating shaft oil seal |
| DE10063970B4 (en) * | 2000-12-20 | 2004-11-25 | Carl Freudenberg Kg | Lip seal ring |
| CN201110379Y (en) * | 2007-12-05 | 2008-09-03 | 孙乐宁 | Combined oil seal for rotational shaft |
| CN103277522B (en) * | 2013-06-15 | 2015-10-21 | 青岛开世密封工业有限公司 | A kind of oil sealing that can reduce pressure of lip |
| CN204344928U (en) * | 2014-12-26 | 2015-05-20 | 中国兵器工业集团第五三研究所 | A kind of kinetic pressure balancing rotating seal |
-
2014
- 2014-12-26 CN CN201410833766.8A patent/CN104534097B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1643276A (en) * | 2002-03-26 | 2005-07-20 | 联邦莫沃尔公司 | Shaft seal |
| CN203245374U (en) * | 2013-04-28 | 2013-10-23 | 郭建文 | Spindle box |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104534097A (en) | 2015-04-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104534097B (en) | A kind of kinetic pressure balancing rotating seal | |
| US11320052B2 (en) | Sliding components | |
| CN104500743B (en) | Tightness system between a kind of reversion axle | |
| US20180187784A1 (en) | Sliding component | |
| EP2752602A1 (en) | Sliding component | |
| CN109281891A (en) | A kind of sealing piston of hydraulic cylinder device and hydraulic cylinder that seal clearance is variable | |
| CN203336103U (en) | Piston balance compensation type high-speed and high-pressure rotary connector | |
| CN107191596A (en) | A kind of non-contact mechanical seal and the seal assembly for preventing lubrication leakage | |
| CN204344928U (en) | A kind of kinetic pressure balancing rotating seal | |
| CN111828644B (en) | Combined sealing device | |
| CN104914412A (en) | Sealed end face self-compensating radar water slide ring | |
| CN210317884U (en) | Fluoroplastic centrifugal pump structure with integrated mechanical sealing device | |
| CN209414613U (en) | Three-level integrated mechanical sealing | |
| CN102865369A (en) | Floating sealing ring with double effects of static pressure and dynamic pressure | |
| CN205080253U (en) | Seal face self compensating radar neatly ring | |
| JP6257402B2 (en) | Rotating shaft seal | |
| CN104132142A (en) | Trapezoidal slip-ring-type combination sealing ring | |
| CN210715955U (en) | Mechanical sealing device | |
| CN209587420U (en) | One kind can impact type water pipe rotary joint | |
| CN104964035A (en) | Sealing ring and rotary sealing device thereof | |
| CN209067582U (en) | A kind of sealing piston of hydraulic cylinder device that seal clearance is variable | |
| CN2934788Y (en) | Combined type magnetic force oil seal | |
| CN201396536Y (en) | Rotary sealing joint | |
| CN207961527U (en) | A kind of oil sealing sealing device | |
| CN101498315A (en) | Spiral pump pressure reducing mechanical sealing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |