CN207018540U - 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
- CN207018540U CN207018540U CN201720621211.6U CN201720621211U CN207018540U CN 207018540 U CN207018540 U CN 207018540U CN 201720621211 U CN201720621211 U CN 201720621211U CN 207018540 U CN207018540 U CN 207018540U
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- shell
- rotary shaft
- self sealss
- ring
- cylindrical self
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Abstract
The utility model 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 utility model, 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 allow for installing and repair, can solve axle envelope shell on the market 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
Axle envelope technical field is the utility model is related to, 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 realize 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.
Utility model content
For overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of rotary shaft of cylindrical self sealss
Envelope, 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
The interference fit installation of bottom footpath, you can realize cylindrical self sealss, also allow for installing and repair, can solve axle envelope shell on the market or
Person's exterior channels bottom footpath is excessively coarse, causes poor sealing, or when mounted, shell will apply fluid sealant could realize it is close
Envelope, the problem of being not easy to install and repair.
The purpose of this utility model 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, the cross-sectional width of stationary seal ring is more than static seal
The cross-sectional width of groove, shell is interior to be provided with through hole, and through hole is used to run through rotary shaft.
Further, in addition to dynamic sealing lip, the inwall of shell are 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 are 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 utility model are：Due to forming static seal ditch on the outer ring of shell
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
The cross-sectional width of static seal groove, it is quiet after the rotary shaft sealing of the cylindrical self sealss and the interference fit installation of exterior channels bottom footpath
Sealing ring is tightly squeezed between the outer ring of shell and exterior channels bottom footpath, you can is realized cylindrical self sealss, is avoided outside lubricating oil
Let out and prevent ambient atmosphere and dust from entering in machine, in addition, when mounted, it is not necessary to apply fluid sealant and can be achieved with sealing, just
In installation and maintenance, can solve axle envelope shell on the market 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.
Brief description of the drawings
Fig. 1 is a kind of structural representation of embodiment of the rotary shaft sealing of the cylindrical self sealss of the utility model；
Fig. 2 be the cylindrical self sealss of the utility model 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 the cylindrical self sealss of the utility model.
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 utility model is described further：
Fig. 1-Fig. 4 is referred to, the utility model is related to a kind of rotary shaft sealing of cylindrical self sealss, including shell 1, static 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
Demonstrate,prove the stationary seal ring 2 to be located in static seal groove 11, and the cross-sectional width of stationary seal ring 2 is more than the section of static seal groove 11
Width, after the rotary shaft sealing of the cylindrical self sealss and the interference fit installation of exterior channels bottom footpath 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, avoid lubricating oil from leaking and prevent outside
Boundary's air and dust enter in machine.And when mounted, it is not necessary to which applying paste can is 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 that (shell 1 is outside carbon steel made of carbon steel material
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, such as stationary seal ring 2 can be NBR (fourths
Nitrile rubber) manufactured (stationary seal ring 2 is NBR stationary seal rings), or, stationary seal ring 2 can be made of FKM (fluorubber)
(stationary seal ring 2 is FKM stationary seal rings), or, stationary seal ring 2 can be (quiet close made of 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
Cylindrical self sealss are realized, avoid lubricating oil from leaking and prevent 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, the one end of dynamic sealing lip 3 are arranged on concave station 13 and are 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 with dynamic sealing lip 3 realize interference fit (the dynamic sealing lip 3 is in circular arc bending), can be effectively
Sealing is realized, avoids lubricating oil from leaking and prevent ambient atmosphere and dust from entering in machine.
Wherein dynamic sealing lip 3 is that (dynamic sealing lip 3 is PTFE dynamic sealings lip), dynamic sealing lip made of the PTFE is made in PTFE
The characteristics of 3 have low-friction coefficient, certainly chemical-resistance, profit and resistance to abrasion characteristic, and service life is long, and it is applied to 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, such as secondary seal pad 4
Can be (secondary seal pad 4 is fluorubber secondary seal pad) made of fluorubber, or, secondary seal pad 4 can be varicosity
Made of polytetrafluoroethylene (PTFE) (varicosity PTFE) (secondary seal pad 4 is expanded PTFE secondary seal pad), or, it is secondary close
Packing 4 can be that (secondary seal pad 4 is ethylene propylene diene rubber secondary seal made of ethylene propylene diene rubber (EPDM of food-grade)
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 realize sealing, avoid lubricating oil
Leak and prevent ambient atmosphere and dust from entering in machine.
During using the utility model, due to forming static seal groove 11 on the outer ring of shell 1, stationary seal ring 2 is sleeved on
On the outer ring of shell 1 and in static seal groove 11, and the cross-sectional width of stationary seal ring 2 is more than the section of static seal groove 11
Width, after the rotary shaft sealing of the cylindrical self sealss and the interference fit installation of exterior channels bottom footpath, stationary seal ring 2 is tightly squeezed in
Between the outer ring of shell 1 and exterior channels bottom footpath, cylindrical self sealss can be achieved, avoid lubricating oil from leaking and prevent ambient atmosphere and powder
Dirt enters 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 city
Axle envelope shell 1 on face is cylindrical or exterior channels bottom footpath is excessively coarse, causes poor sealing, or when mounted, shell 1 is all
Sealing could be realized by applying fluid sealant, 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
Corresponding change and deformation, and all these changes and deformation should all belong to the protection of the utility model claims
Within the scope of.
Claims (10)
- A kind of 1. 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 is more than the cross-sectional width of the static seal groove, and through hole is provided with the shell, 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 realizes interference fit through the through hole and 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 moves 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 |
|---|---|---|---|
| CN201720621211.6U CN207018540U (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 |
|---|---|---|---|
| CN201720621211.6U CN207018540U (en) | 2017-05-31 | 2017-05-31 | A kind of rotary shaft sealing of cylindrical self sealss |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207018540U true CN207018540U (en) | 2018-02-16 |
Family
ID=61476209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720621211.6U Active CN207018540U (en) | 2017-05-31 | 2017-05-31 | A kind of rotary shaft sealing of cylindrical self sealss |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207018540U (en) |
-
2017
- 2017-05-31 CN CN201720621211.6U patent/CN207018540U/en active Active
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