CN108426033A - Lippacking - Google Patents
Lippacking Download PDFInfo
- Publication number
- CN108426033A CN108426033A CN201710079885.2A CN201710079885A CN108426033A CN 108426033 A CN108426033 A CN 108426033A CN 201710079885 A CN201710079885 A CN 201710079885A CN 108426033 A CN108426033 A CN 108426033A
- Authority
- CN
- China
- Prior art keywords
- sealing lip
- lippacking
- lip
- procheilon
- protective layer
- 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.)
- Pending
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
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3208—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip provided with tension elements, e.g. elastic 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
- F16J15/3244—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
- F16J15/3248—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports
Abstract
A kind of lippacking includes the main body of annular, and around the sealing lip of the main body, the sealing lip has the procheilon for contacting sealing and the lip towards axial one end open；Guard member is installed on the sealing lip, there is the guard member protective layer for covering the procheilon, the protective layer to extend in an axial direction from the procheilon to the opening direction of the lip, and be in the annular coaxial with the sealing lip.This programme can be to avoid sealing lip is worn and is failed.
Description
Technical field
The present invention relates to field of sealing technology, and in particular to a kind of lippacking.
Background technology
Lippacking is a kind of contact seals with self-tightening, is widely used in the machinery member of relative motion
Between part, such as between shell and the rotary shaft for being arranged in shell.By taking engine or gear-box as an example, in order to realize heat dissipation or
Person lubricates, and lubricant or coolant are typically provided in shell, and lippacking is mounted on shell and is placed on outside rotary shaft, will
Enclosure interior and extraneous isolation, are realized to interior sealing, external dust-proof effect.
In clean coolant or lubricant environment, lippacking can be run well.But by manufacture work
The surface of the influences such as skill, storage and transportation environment, each mechanical organ is inevitably stained with metallic or other particles
Impurity, these particles can be gathered in the close of lippacking with the operating of rotary shaft after entering in lubricant or coolant
Envelope lip nearby causes to wear to it, leads to the seal failure of lippacking.
Invention content
Problems solved by the invention is that existing lippacking is typically due to the particle being cooled in agent or lubricant
The abrasion of impurity and fail.
To solve the above problems, the present invention provides a kind of lippacking, include the main body of annular, and surround the master
The sealing lip of body, the sealing lip have the procheilon for contacting sealing and the lip towards axial one end open；It is described close
Guard member is installed on envelope lip, the guard member has the protective layer for covering the procheilon, and the protective layer is in an axial direction from described
Procheilon extends to the opening direction of the lip, and is in the annular coaxial with the sealing lip.
Optionally, the sealing lip further includes first surface, the second surface for the axial both sides for being located at the procheilon,
The position that the first surface, second surface intersect forms the procheilon；Compared to the first surface, the second surface edge
The axial lip closer to the sealing lip, the guard member are fixed on the first surface.
Optionally, the protective layer is equipped with groove on the end face far from described procheilon one end.
Optionally, the groove is multiple with circumferentially arranging.
Optionally, multiple grooves circumferentially connect in wave shape.
Optionally, the sealing lip has multiple, and a sealing lip corresponds to a protective layer.
Optionally, in multiple sealing lips, axial one end of opening direction of the lip of a part of sealing lip, another part
The axial other end of opening direction of the lip of sealing lip.
Optionally, the protective layer on each sealing lip is integrally formed at the same guard member.
Optionally, the guard member vulcanization is in the sealing lip.
Optionally, the friction coefficient of the guard member is less than rubber.
Optionally, the guard member is polytetrafluoroethylene (PTFE).
Compared with prior art, technical scheme of the present invention has the following advantages：
The sealing lip of this programme is installed with guard member, the protective layer of guard member with covering procheilon and in a ring, protective layer
Extend in an axial direction from the procheilon of place sealing lip to the opening direction of lip.
After lippacking is arranged on the rotary shaft, sealing lip is pressed on the peripheral surface of rotary shaft, protective layer and rotation
The parallel and peripheral surface with rotary shaft of axis contacts, and the procheilon of rotary shaft and sealing lip is separated, and avoids procheilon and rotary shaft
Contact, thus avoids sealing lip from contacting and wear with particle friction.
Further, groove is set on the end face of one end of procheilon of the protective layer far from place sealing lip, works as lip packing
Part is installed on the rotary shaft, and fluid (such as lubricant, coolant or air) in a groove is by groove effect and along phase
For lippacking circumferential movement, it is possible thereby to the particle accumulated near protective layer is thrown away into protective layer, it is close to ensure
The cleaning for sealing fluid environment near lip, to further avoid the abrasion of sealing lip.
Description of the drawings
Fig. 1 is sectional view of the lippacking in stereoscopic-state of first embodiment of the invention；
Fig. 2 is the sectional view of the lippacking of first embodiment of the invention；
Fig. 3 is the first sealing lip of the lippacking of first embodiment of the invention and the exploded view of guard member；
Fig. 4 is the sectional view of the lippacking of second embodiment of the invention；
Fig. 5 is the sectional view of the lippacking of third embodiment of the invention.
Specific implementation mode
To make the above purposes, features and advantages of the invention more obvious and understandable, below in conjunction with the accompanying drawings to the present invention
Specific embodiment be described in detail.
First embodiment
The present embodiment provides a kind of lippackings, and shown in Fig. 3, which includes the master of annular
Body 10, and the sealing lip around main body 10.Wherein, for lippacking, the quantity of sealing lip can be one or
Person is multiple.When sealing lip is multiple, the opening direction of the lip of each sealing lip can be identical, or opposite.
Fig. 1, lippacking shown in Fig. 2 include two sealing lips and are respectively positioned on the radially inner side of main body 10, respectively
Be defined as the first sealing lip 20, the second sealing lip 30, wherein the first sealing lip 20, the second sealing lip 30 lip opening side
To opposite.The lippacking can be used for being set in rotary shaft (not shown), and main body 10 is then fixed on on-rotatably moving part
On, the first sealing lip 20, the second sealing lip 30 and the peripheral surface of rotary shaft form contact dynamic sealing.The inside of main body 10 can
Embedded skeleton 11, the intensity for reinforcing main body.In the present embodiment, sealing lip be set to lippacking radially inner side, with
It is arranged between the rotary shaft in lip-type seal part and forms sealing.In other embodiments, it is close can also to be set to lip for sealing lip
The radial outside of sealing is sealed with being sheathed on to be formed between the rotary part on the outside of lippacking.
Wherein, the first sealing lip 20 has for contact the first procheilon 21 sealed and towards the of axial one end open
One lip 22, the second sealing lip 30 have the second procheilon 31 for contact sealing and towards the second of another end openings of axial direction
Lip 32.The opening direction of first lip 22 is then carried on the back towards the seal cavity for needing to seal, the opening direction of the second lip 32
To seal cavity.As a result, the first sealing lip 20 be used as primary seal lip, can be used for inside seal cavity lubricant or cooling
Agent etc. is sealed, to prevent its leakage；Second sealing lip 20 is used as secondary sealing lip, can be used for the powder outside seal cavity
The impurity such as dirt, steam are stopped, prevent it from entering seal cavity.
Helical spring 40, when lippacking is sheathed in rotary shaft, spiral shell can be coaxially buried in first sealing lip 20
It revolves spring 40 and a tensile force is provided, the first sealing lip 20 is pressed in rotary shaft.
As shown in Figure 1 and Figure 2, guard member 50 is installed on the first sealing lip 20, guard member 50 has the first procheilon 21 of covering
Protective layer 51, protective layer 51 be in the annular coaxial with the first sealing lip 20.Protective layer 51 is in an axial direction from the first procheilon 21 to
The opening direction of one lip 22 extends, from fig. 2 it can be seen that protective layer 51 extends to the right from the first procheilon 21.
After lippacking is arranged on the rotary shaft, the first sealing lip 20 is pressed on the peripheral surface of rotary shaft, protective layer
51 is parallel with rotary shaft, and is contacted with the peripheral surface of rotary shaft.Protective layer 51 is by the of rotary shaft and the first sealing lip 20 as a result,
One procheilon 21 separates, and the first procheilon 21 is not contacted with rotary shaft, can be to avoid the first sealing lip 20 and lubricant or coolant
In particle friction contact and wear.
Wherein, the first sealing lip 20 is rubber parts, is rubbed in order to avoid increasing the contact between lippacking and rotary shaft
It wipes, the friction coefficient that guard member 50 is especially protective layer 51 is less than rubber.In the present embodiment, guard member 50 is by polytetrafluoroethylene (PTFE) shape
At.The self-lubricating property of polytetrafluoroethylene (PTFE) can effectively reduce the friction between lippacking and rotary shaft.
In the present embodiment, guard member 50 is fixed on the first sealing lip 20, preferred in the fixed position of the first sealing lip 20
In the first procheilon 21 backwards to the side of seal cavity.As shown in figure 3, the first sealing lip 20 includes being located at the first procheilon 21
Axial both sides first surface 23, second surface 24, first surface 23, second surface 24 intersect position formed the first procheilon
21.Compared to first surface 23, for second surface 24 in an axial direction closer to the first lip 22 of the first sealing lip 20, guard member 50 is solid
Due to first surface 23.
Specifically, guard member 50 has the fixed bed 52 for being fixed on first surface 23, fixed bed 52 can be by vulcanizing work
Skill vulcanizes in the rubber parts of the first sealing lip 20.
Second embodiment
Difference lies in as shown in figure 4, protective layer 51 is far from 21 one end of the first procheilon for the present embodiment and first embodiment
End face be equipped with groove 53.It can be seen from figure 4 that groove 53 is set to the end face of the free end of protective layer 51.
Groove 53 is set in protective layer 51, and when lippacking is installed on the rotary shaft, groove 53 is towards seal cavity
And in seal cavity lubricant or coolant contact, drive lubricant or coolant relative to protection when rotary shaft rotates
Layer 51 rotates.The cell wall of lubricant or coolant and groove 53 is collided due to relative motion, in impact force
Effect is lower far from protection laminar flow, and the direction to be directed away from protective layer with the particle for accumulating in protective layer free end is flowed
It is dynamic.As a result, groove 53 can in groove 53 lubricant or coolant play to far from the first procheilon 22 direction pump
The effect sent, by groove 53 lubricant or coolant far from lippacking pump, it is possible thereby to which guarantor will be accumulated in
Particle near sheath 51 throws away protective layer 51, to ensure the cleaning of fluid environment near the first sealing lip 20, with further
Avoid the abrasion of the first sealing lip 20.
Wherein, the quantity of groove 53 can be arranged as required to, and can be one or more.In the present embodiment, groove 53
It is multiple with what is circumferentially arranged, and it is in wave shape circumferentially to connect.As shown in figure 4, the free end of protective layer 51 is in circumferentially to rise
The corrugated of volt, wherein each trough is all formed as a groove 53, the wall surface of groove 53 is curvilinear.
In other embodiments, the shape of groove 53 can also be the groove of square groove, vee gutter or other shapes,
The shape of groove is unlimited, as long as the end face in the free end of protective layer is recessed.
3rd embodiment
The present embodiment and first embodiment, difference lies in as shown in figure 5, guard member 50 from first is close for second embodiment
Envelope lip 20 extends to the second sealing lip 30, and guard member 50 covers the second procheilon 31 simultaneously.When lippacking is set in rotary shaft
When upper, guard member 50 is contacted instead of the second procheilon 31 with rotary shaft, to protect the second sealing lip 30 from the abrasion of friction.
Such as Fig. 5, guard member 50 vulcanizes on the first sealing lip 20 and the second sealing lip 30 simultaneously.
In other embodiments, can also be respectively set on the first sealing lip, the second sealing lip it is separate (i.e. each other
Between independently of each other) guard member, and formed and be covered each by the protective layer of the first procheilon, the second procheilon.Wherein, correspond to first
Procheilon, the second procheilon the end face of free end of protective layer all can be planar, or be equipped with groove.
Although present disclosure is as above, present invention is not limited to this.Any those skilled in the art are not departing from this
It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
Subject to the range of restriction.
Claims (10)
1. a kind of lippacking includes the main body of annular, and around the sealing lip of the main body, the sealing lip, which has, to be used
In the procheilon of contact sealing and towards the lip of axial one end open；
It is characterized in that, being installed with guard member on the sealing lip, the guard member has the protective layer for covering the procheilon, institute
It states protective layer in an axial direction to extend from the procheilon to the opening direction of the lip, and is in the annular coaxial with the sealing lip.
2. lippacking as described in claim 1, which is characterized in that the sealing lip further includes being located at the procheilon
Axial both sides first surface, second surface, the first surface, second surface intersection position form the procheilon；
Compared to the first surface, for the second surface in an axial direction closer to the lip of the sealing lip, the guard member is solid
Due to the first surface.
3. lippacking as described in claim 1, which is characterized in that the protective layer is at the end far from described procheilon one end
Face is equipped with groove.
4. lippacking as claimed in claim 3, which is characterized in that the groove is multiple with circumferentially arranging.
5. lippacking as claimed in claim 4, which is characterized in that multiple grooves circumferentially connect in wave shape.
6. the lippacking as described in any one of claim 1-5, which is characterized in that the sealing lip have it is multiple, one
A sealing lip corresponds to a protective layer.
7. lippacking as claimed in claim 6, which is characterized in that in multiple sealing lips, a part of sealing lip
Axial one end of opening direction of lip, the axial other end of opening direction of the lip of another part sealing lip.
8. lippacking as claimed in claim 6, which is characterized in that the protective layer one on each sealing lip
It is formed in the same guard member.
9. lippacking as described in claim 1, which is characterized in that the friction coefficient of the guard member is less than rubber.
10. lippacking as described in claim 1, which is characterized in that the guard member is polytetrafluoroethylene (PTFE).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710079885.2A CN108426033A (en) | 2017-02-14 | 2017-02-14 | Lippacking |
| PCT/CN2018/073771 WO2018149274A1 (en) | 2017-02-14 | 2018-01-23 | Lip seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710079885.2A CN108426033A (en) | 2017-02-14 | 2017-02-14 | Lippacking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108426033A true CN108426033A (en) | 2018-08-21 |
Family
ID=63155172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710079885.2A Pending CN108426033A (en) | 2017-02-14 | 2017-02-14 | Lippacking |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108426033A (en) |
| WO (1) | WO2018149274A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113883275A (en) * | 2021-09-30 | 2022-01-04 | 中铁工程装备集团有限公司 | Combined sealing ring and manufacturing method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1106878A2 (en) * | 1999-12-10 | 2001-06-13 | RFT S.p.A. | A low-friction seal assembly, in particular for a rolling-element bearing, and a manufacturing method therefor |
| CN2755362Y (en) * | 2004-11-11 | 2006-02-01 | 张国林 | Oil sealer of slinger |
| CN201992070U (en) * | 2011-01-27 | 2011-09-28 | 青岛开世密封工业有限公司 | Combined shaft sleeve oil seal |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11159629A (en) * | 1997-11-28 | 1999-06-15 | Nok Corp | Oil seal |
| CN200943705Y (en) * | 2006-07-31 | 2007-09-05 | 青岛海力威密封有限公司 | Double lip oil seal |
| CN206054738U (en) * | 2016-06-21 | 2017-03-29 | 浙江通驰油封科技有限公司 | Politef combined seal |
-
2017
- 2017-02-14 CN CN201710079885.2A patent/CN108426033A/en active Pending
-
2018
- 2018-01-23 WO PCT/CN2018/073771 patent/WO2018149274A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1106878A2 (en) * | 1999-12-10 | 2001-06-13 | RFT S.p.A. | A low-friction seal assembly, in particular for a rolling-element bearing, and a manufacturing method therefor |
| CN2755362Y (en) * | 2004-11-11 | 2006-02-01 | 张国林 | Oil sealer of slinger |
| CN201992070U (en) * | 2011-01-27 | 2011-09-28 | 青岛开世密封工业有限公司 | Combined shaft sleeve oil seal |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113883275A (en) * | 2021-09-30 | 2022-01-04 | 中铁工程装备集团有限公司 | Combined sealing ring and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018149274A1 (en) | 2018-08-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180821 |