CN107166040A - A kind of rotary shaft sealing of cylindrical self sealss - Google Patents
A kind of rotary shaft sealing of cylindrical self sealss Download PDFInfo
- Publication number
- CN107166040A CN107166040A CN201710401077.3A CN201710401077A CN107166040A CN 107166040 A CN107166040 A CN 107166040A CN 201710401077 A CN201710401077 A CN 201710401077A CN 107166040 A CN107166040 A CN 107166040A
- Authority
- CN
- China
- Prior art keywords
- shell
- rotary shaft
- self sealss
- ring
- cylindrical self
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 79
- 241000283216 Phocidae Species 0.000 title claims abstract description 69
- 230000003068 static effect Effects 0.000 claims abstract description 27
- 239000002184 metal Substances 0.000 claims description 16
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 11
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 11
- 229920000459 Nitrile rubber Polymers 0.000 claims description 8
- 229920002943 EPDM rubber Polymers 0.000 claims description 5
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 4
- 239000010962 carbon steel Substances 0.000 claims description 4
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 229920001971 elastomer Polymers 0.000 claims 1
- 239000012530 fluid Substances 0.000 abstract description 7
- 239000000565 sealant Substances 0.000 abstract description 7
- 230000008439 repair process Effects 0.000 abstract description 6
- 239000010687 lubricating oil Substances 0.000 description 8
- 239000000428 dust Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 206010046996 Varicose vein Diseases 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- HIHIPCDUFKZOSL-UHFFFAOYSA-N ethenyl(methyl)silicon Chemical compound C[Si]C=C HIHIPCDUFKZOSL-UHFFFAOYSA-N 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
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
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
-
- 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
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/38—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member sealed by a packing
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Abstract
The invention discloses a kind of rotary shaft sealing of cylindrical self sealss, including shell and stationary seal ring, the outer ring of shell is provided with static seal groove, stationary seal ring is sleeved on the outer ring of shell and in static seal groove, the cross-sectional width of stationary seal ring is more than the cross-sectional width of static seal groove, through hole is provided with shell, through hole is used to run through rotary shaft.In the present invention, due to forming static seal groove on the outer ring of shell, stationary seal ring is sleeved in static seal groove to be interference fitted with exterior channels bottom footpath again and installed, cylindrical self sealss can be achieved, also allows for installing and repairs, axle envelope shell on the market can be solved or exterior channels bottom footpath is excessively coarse, cause poor sealing, or when mounted, shell, which will apply fluid sealant, could realize sealing, the problem of being not easy to install and repair.
Description
Technical field
The present invention relates to axle envelope technical field, more particularly to a kind of rotary shaft sealing of cylindrical self sealss.
Background technology
Mechanical engineering field is such as：The transmission devices such as engineering machinery, building machinery, agricultural machinery, metallurgy, lathe and automobile
(gear-box) and hydraulic pump, the rotary shaft shaft end seal of hydraulic motor will use rotary shaft sealing, lead in these mechanical cylinder bodies
Often it is required for using lubricating oil or hydraulic oil, in order to prevent lubricating oil or hydraulic oil from leaking and preventing ambient atmosphere and dust from entering
In machine, often it is sealed using rotary shaft sealing.
Rotary shaft sealing on the market, the dynamic sealing lip internal diameter for being typically rotated axle envelope realizes sealing, rotation with respect to diameter of axle interference
Rotating shaft envelope shell is also to be press-fitted to exterior channels bottom footpath to realize sealing, often due to exterior channels bottom footpath or axle envelope shell are excessively
It is coarse, cause poor sealing, when mounted, shell, which will apply fluid sealant, could realize sealing, be not easy to install and repair, very
Trouble.
The content of the invention
In order to overcome the deficiencies in the prior art, it is an object of the invention to provide a kind of rotary shaft sealing of cylindrical self sealss,
Due to forming static seal groove on the outer ring of shell, by stationary seal ring be sleeved in static seal groove again with exterior channels bottom footpath
Interference fit is installed, you can is realized cylindrical self sealss, is also allowed for installing and repair, and can solve axle envelope shell or outer on the market
Portion trench bottom footpath is excessively coarse, causes poor sealing, or when mounted, shell, which will apply fluid sealant, could realize sealing, no
The problem of being easy for installation and maintenance.
The purpose of the present invention is realized using following technical scheme：
A kind of rotary shaft sealing of cylindrical self sealss, including shell and stationary seal ring, the outer ring of shell are provided with static seal ditch
Groove, stationary seal ring is sleeved on the outer ring of shell and in static seal groove, and the cross-sectional width of stationary seal ring is more than static seal
Through hole is provided with the cross-sectional width of groove, shell, through hole is used to run through rotary shaft.
Further, in addition to dynamic sealing lip, the inwall of shell is provided with concave station, and dynamic sealing lip one end is arranged on concave station
And be in contact with inwall, the dynamic sealing lip other end is extended to above through hole so that rotary shaft is through through hole and real with dynamic sealing lip
Now it is interference fitted.
Further, dynamic sealing lip is in circular arc bending.
Further, in addition to secondary seal pad, secondary seal pad is arranged on concave station and under dynamic sealing lip one end
Side.
Further, in addition to metal pressure ring, it is additionally provided with indent on the inwall of shell；Metal pressure ring side is arranged at indent
Interior, metal pressure ring opposite side is located above dynamic sealing lip and bear against dynamic sealing lip.
Further, the cross section of metal pressure ring is L-shaped.
Further, shell is stainless steel casing or carbon steel shell.
Further, stationary seal ring is that polyurethane stationary seal ring, NBR stationary seal rings, FKM stationary seal rings or VMQ are quiet close
Seal ring.
Further, dynamic sealing lip is PTFE dynamic sealing lips.
Further, secondary seal pad is nitrile rubber secondary seal pad, fluorubber secondary seal pad, e-PTFE second
Alkene secondary seal pad or ethylene propylene diene rubber secondary seal pad.
Compared with prior art, the beneficial effects of the present invention are：, will due to forming static seal groove on the outer ring of shell
Stationary seal ring is sleeved on the outer ring of shell and in static seal groove, and the cross-sectional width of stationary seal ring is more than static seal
The cross-sectional width of groove, after the rotary shaft sealing of the cylindrical self sealss and exterior channels bottom footpath interference fit are installed, stationary seal ring
Tightly it is squeezed between the outer ring of shell and exterior channels bottom footpath, you can realize cylindrical self sealss, it is to avoid lubricating oil leaks and prevented
Only ambient atmosphere and dust enter in machine, in addition, when mounted, it is not necessary to apply fluid sealant and can be achieved with sealing, are easily installed
And maintenance, axle envelope shell on the market can be solved or exterior channels bottom footpath is excessively coarse, cause poor sealing, or installing
When, shell, which will apply fluid sealant, could realize sealing, the problem of being not easy to install and repair.
Brief description of the drawings
Fig. 1 is a kind of structural representation of embodiment of the rotary shaft sealing of cylindrical self sealss of the invention；
Fig. 2 for cylindrical self sealss of the invention rotary shaft sealing in shell structural representation；
Fig. 3 is the mplifying structure schematic diagram in A portions shown in Fig. 1；
Fig. 4 is a kind of use state figure of the rotary shaft sealing of cylindrical self sealss of the invention.
In figure：1st, shell；11st, static seal groove；12nd, through hole；13rd, concave station；14th, indent；15th, thin segment；2nd, static seal
Ring；3rd, dynamic sealing lip；4th, secondary seal pad；5th, metal pressure ring；101st, rotary shaft.
Embodiment
Below, with reference to accompanying drawing and embodiment, the present invention is described further：
Refer to Fig. 1-Fig. 4, the present invention relates to a kind of rotary shaft sealing of cylindrical self sealss, including shell 1, stationary seal ring 2,
Dynamic sealing lip 3, secondary seal pad 4, metal pressure ring 5.
A circle static seal groove 11 is formed on the outer ring of shell 1, stationary seal ring 2 is sleeved on the outer ring of shell 1 and protected
The stationary seal ring 2 is demonstrate,proved in static seal groove 11, and section of the cross-sectional width more than static seal groove 11 of stationary seal ring 2
Width, after the rotary shaft sealing of the cylindrical self sealss and exterior channels bottom footpath interference fit are installed so that the stationary seal ring 2 is tightly
It is squeezed between the outer ring of shell 1 and exterior channels bottom footpath, you can to realize cylindrical self sealss, it is to avoid lubricating oil leaks and prevented outer
Boundary's air and dust enter in machine.And when mounted, it is not necessary to applying paste can just be realized on the outer ring of shell 1
Sealing, is easy for installation and maintenance.
In the present embodiment, shell 1 is that stainless steel is made (shell 1 is stainless steel casing).In other embodiments, outside
The material of shell 1 can be changed according to actual conditions, such as shell 1 can be carbon steel material be made (shell 1 is outside carbon steel
Shell).As long as ensureing to form a circle static seal groove 11 on the outer ring of shell 1, stationary seal ring 2 is sleeved on the outer ring of shell 1
And ensure that the stationary seal ring 2 is located in static seal groove 11.
In the present embodiment, stationary seal ring 2 is that polyurethane material is made (stationary seal ring 2 is polyurethane stationary seal ring).At it
In his embodiment, the material of stationary seal ring 2 can be changed according to actual conditions, and such as stationary seal ring 2 can be NBR (fourths
Nitrile rubber) (stationary seal ring 2 be NBR stationary seal rings) that is made, or, what stationary seal ring 2 can be made for FKM (fluorubber)
(stationary seal ring 2 is FKM stationary seal rings), or, it is (quiet close that stationary seal ring 2 can be made for VMQ (methyl vinyl silicone rubber)
Seal ring 2 is VMQ stationary seal rings)., can as long as ensureing that stationary seal ring 2 is tightly squeezed between the outer ring of shell 1 and exterior channels bottom footpath
Realize cylindrical self sealss, it is to avoid lubricating oil leaks and prevented ambient atmosphere and dust from entering in machine.
Through hole 12 is formed in shell 1, through hole 12 is used to run through rotary shaft 101, also formed on the inwall of shell 1 recessed
Platform 13, one end of dynamic sealing lip 3 is arranged on concave station 13 and is in contact with inwall, and secondary seal pad 4 is positioned on concave station 13 and position
Below the one end of dynamic sealing lip 3, the other end of dynamic sealing lip 3 extends to the top of through hole 12, and rotary shaft 101 is run through into the through hole 12 simultaneously
So that the rotary shaft 101 and interference fit (the dynamic sealing lip 3 be in circular arc bending) is realized with dynamic sealing lip 3, can be effectively
Realize sealing, it is to avoid lubricating oil leaks and prevented ambient atmosphere and dust from entering in machine.
Wherein dynamic sealing lip 3 is that (dynamic sealing lip 3 is PTFE dynamic sealings lip), the dynamic sealing lip that the PTFE is made is made in PTFE
3 have low-friction coefficient, chemical-resistance, from profit and resistance to abrasion characteristic, the characteristics of service life is long, and suitable for high temperature ring
Border and low temperature environment, its operating temperature range are [- 60 DEG C ,+200 DEG C].
In the present embodiment, secondary seal pad 4 is that nitrile rubber is made that (secondary seal pad 4 is nitrile rubber secondary seal
Pad).In other embodiments, the material of secondary seal pad 4 can be changed according to actual conditions, for example secondary seal pad 4
Can be (secondary seal pad 4 is fluorubber secondary seal pad) that fluorubber is made, or, secondary seal pad 4 can be varicosity
(secondary seal pad 4 is expanded PTFE secondary seal pad) that polytetrafluoroethylene (PTFE) (varicosity PTFE) is made, or, it is secondary close
Packing 4 can be ethylene propylene diene rubber (EPDM of food-grade) be made (secondary seal pad 4 is ethylene propylene diene rubber secondary seal
Pad).
Indent 14 is also formed on the inwall of shell 1, the side of metal pressure ring 5 is positioned in indent 14, metal pressure ring 5 is another
Side is located at the top of dynamic sealing lip 3 and bear against the dynamic sealing lip 3 (cross section of metal pressure ring 5 is L-shaped), the top of shell 1
A thin segment 15 is also formed, this thin segment 15 is bent to withhold metal pressure ring 5, metal pressure ring 5 can be avoided
There is situation about loosening, the compactness between increase metal pressure ring 5 and dynamic sealing lip 3 effectively realizes sealing, it is to avoid lubricating oil
Leak and prevent ambient atmosphere and dust from entering in machine.
During using the present invention, due to forming static seal groove 11 on the outer ring of shell 1, stationary seal ring 2 is sleeved on shell 1
On outer ring and in static seal groove 11, and cross-sectional width of the cross-sectional width more than static seal groove 11 of stationary seal ring 2,
After the rotary shaft sealing of the cylindrical self sealss and exterior channels bottom footpath interference fit are installed, stationary seal ring 2 is tightly squeezed in shell 1
Between outer ring and exterior channels bottom footpath, cylindrical self sealss can be achieved, it is to avoid lubricating oil leaks and prevented ambient atmosphere and dust from entering
Enter in machine.In addition, when mounted, it is not necessary to apply fluid sealant and can be achieved with sealing, be easy for installation and maintenance, can solve on the market
Axle envelope shell 1 it is cylindrical or exterior channels bottom footpath is excessively coarse, cause poor sealing, or when mounted, shell 1 will be applied
Fluid sealant could realize sealing, the problem of being not easy to install and repair.
It will be apparent to those skilled in the art that technical scheme that can be as described above and design, make other various
It is corresponding to change and deformation, and all these change and deformation should all belong to the protection domain of the claims in the present invention
Within.
Claims (10)
1. a kind of rotary shaft sealing of cylindrical self sealss, it is characterised in that：Including shell and stationary seal ring, on the outer ring of the shell
Provided with static seal groove, the stationary seal ring is sleeved on the outer ring of the shell and in the static seal groove, described
The cross-sectional width of stationary seal ring, which is more than in the cross-sectional width of the static seal groove, the shell, is provided with through hole, and the through hole is used
In through rotary shaft.
2. the rotary shaft sealing of cylindrical self sealss according to claim 1, it is characterised in that：Also include dynamic sealing lip, it is described
The inwall of shell is provided with concave station, and described dynamic sealing lip one end is arranged on concave station and is in contact with inwall, the dynamic sealing lip
The other end is extended to above the through hole so that rotary shaft through the through hole and realizes interference fit with dynamic sealing lip.
3. the rotary shaft sealing of cylindrical self sealss according to claim 2, it is characterised in that：The dynamic sealing lip is curved in circular arc
It is curved.
4. the rotary shaft sealing of cylindrical self sealss according to claim 2, it is characterised in that：Also include secondary seal pad, institute
Secondary seal pad is stated to be arranged on concave station and below described dynamic sealing lip one end.
5. the rotary shaft sealing of cylindrical self sealss according to claim 4, it is characterised in that：Also include metal pressure ring, it is described
Indent is additionally provided with the inwall of shell；
The metal pressure ring side is arranged in indent, and the metal pressure ring opposite side is located above the dynamic sealing lip and compressed
The dynamic sealing lip.
6. the rotary shaft sealing of cylindrical self sealss according to claim 5, it is characterised in that：The cross section of the metal pressure ring
It is L-shaped.
7. the rotary shaft sealing of the cylindrical self sealss according to any one of claim 1-6, it is characterised in that：The shell is
Stainless steel casing or carbon steel shell.
8. the rotary shaft sealing of the cylindrical self sealss according to any one of claim 1-6, it is characterised in that：The static seal
Ring is polyurethane stationary seal ring, NBR stationary seal rings, FKM stationary seal rings or VMQ stationary seal rings.
9. the rotary shaft sealing of cylindrical self sealss according to claim 2, it is characterised in that：The dynamic sealing lip is dynamic for PTFE
Sealing lip.
10. the rotary shaft sealing of cylindrical self sealss according to claim 4, it is characterised in that：The secondary seal pad is fourth
Fine rubber secondary seal pad, fluorubber secondary seal pad, expanded PTFE secondary seal pad or ethylene propylene diene rubber two
Secondary sealing gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710401077.3A CN107166040A (en) | 2017-05-31 | 2017-05-31 | A kind of rotary shaft sealing of cylindrical self sealss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710401077.3A CN107166040A (en) | 2017-05-31 | 2017-05-31 | A kind of rotary shaft sealing of cylindrical self sealss |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107166040A true CN107166040A (en) | 2017-09-15 |
Family
ID=59821235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710401077.3A Pending CN107166040A (en) | 2017-05-31 | 2017-05-31 | A kind of rotary shaft sealing of cylindrical self sealss |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107166040A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0828072A1 (en) * | 1996-09-06 | 1998-03-11 | RFT S.p.A. | Sheet metal cover for a mechanical, rotary seal for a drive shaft of a vehicle |
| JP2002364759A (en) * | 2001-06-06 | 2002-12-18 | Toyota Industries Corp | Lip seal |
| US20030230853A1 (en) * | 2002-06-17 | 2003-12-18 | Chu Henry C. | Changeable sealing assembly for compressor apparatus |
| CN201339716Y (en) * | 2008-12-29 | 2009-11-04 | 上海三电贝洱汽车空调有限公司 | Shaft seal |
| CN201436426U (en) * | 2009-06-30 | 2010-04-07 | 广州机械科学研究院 | Rockwell sealing ring |
| CN201437844U (en) * | 2009-06-30 | 2010-04-14 | 广州机械科学研究院 | Nesting sealing ring |
| CN202251978U (en) * | 2011-10-19 | 2012-05-30 | 湖州吉利美橡胶有限公司 | Shaft sealing device |
| CN203146822U (en) * | 2013-04-07 | 2013-08-21 | 艾志（南京）环保管接技术股份有限公司 | Multi-ring lip line sealed bearing protector |
| CN104583652A (en) * | 2012-08-23 | 2015-04-29 | 伊格尔工业股份有限公司 | Sealing means |
| CN204477313U (en) * | 2015-01-30 | 2015-07-15 | 凯氟隆（厦门）密封件有限公司 | The general plug sealing ring of a kind of rotation |
| CN204784218U (en) * | 2015-06-30 | 2015-11-18 | 国家电网公司 | Bearing seal |
| CN105782453A (en) * | 2008-05-15 | 2016-07-20 | 伊格尔工业股份有限公司 | Lip Type Seal |
-
2017
- 2017-05-31 CN CN201710401077.3A patent/CN107166040A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0828072A1 (en) * | 1996-09-06 | 1998-03-11 | RFT S.p.A. | Sheet metal cover for a mechanical, rotary seal for a drive shaft of a vehicle |
| JP2002364759A (en) * | 2001-06-06 | 2002-12-18 | Toyota Industries Corp | Lip seal |
| US20030230853A1 (en) * | 2002-06-17 | 2003-12-18 | Chu Henry C. | Changeable sealing assembly for compressor apparatus |
| CN105782453A (en) * | 2008-05-15 | 2016-07-20 | 伊格尔工业股份有限公司 | Lip Type Seal |
| CN201339716Y (en) * | 2008-12-29 | 2009-11-04 | 上海三电贝洱汽车空调有限公司 | Shaft seal |
| CN201436426U (en) * | 2009-06-30 | 2010-04-07 | 广州机械科学研究院 | Rockwell sealing ring |
| CN201437844U (en) * | 2009-06-30 | 2010-04-14 | 广州机械科学研究院 | Nesting sealing ring |
| CN202251978U (en) * | 2011-10-19 | 2012-05-30 | 湖州吉利美橡胶有限公司 | Shaft sealing device |
| CN104583652A (en) * | 2012-08-23 | 2015-04-29 | 伊格尔工业股份有限公司 | Sealing means |
| CN203146822U (en) * | 2013-04-07 | 2013-08-21 | 艾志（南京）环保管接技术股份有限公司 | Multi-ring lip line sealed bearing protector |
| CN204477313U (en) * | 2015-01-30 | 2015-07-15 | 凯氟隆（厦门）密封件有限公司 | The general plug sealing ring of a kind of rotation |
| CN204784218U (en) * | 2015-06-30 | 2015-11-18 | 国家电网公司 | Bearing seal |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170915 |