CN207316070U - Rotary seal structure - Google Patents
Rotary seal structure Download PDFInfo
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- CN207316070U CN207316070U CN201721083433.3U CN201721083433U CN207316070U CN 207316070 U CN207316070 U CN 207316070U CN 201721083433 U CN201721083433 U CN 201721083433U CN 207316070 U CN207316070 U CN 207316070U
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- seal structure
- rotary seal
- axle sleeve
- sealing
- rotation axis
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Abstract
It the utility model is related to a kind of rotary seal structure.Rotary seal structure, including axle sleeve and rotate the rotation axis being plugged in axle sleeve, sealing ring is equipped between the axle sleeve and rotation axis, the inner wall of the axle sleeve is equipped with inner groove, self-lubricating slip ring is equipped with the inner groove, the self-lubricating slip ring includes being used for the main ring body for producing seal pressure between rotation axis under the action of the elastic contractile force of sealing ring, the sealing ring elastic cuffs, which are located at the radial outside of the main ring body and are sealed with the inner groove, to be coordinated, the radially inner side face of the main ring body is the sealing mating surface for coordinating with the sealing of the outer circumferential surface of rotation axis, the at least side of main ring body axial direction, which is equipped with, to be used for and the sealing ring outside edge that block coordinates vertically.Above-mentioned rotary seal structure solves the problems, such as existing rotary seal structure easy to wear, short life and rotation axis driving force is required high.
Description
Technical field
It the utility model is related to a kind of rotary seal structure.
Background technology
Existing rotary seal structure is usually labyrinth seal structure or O-ring seals sealing structure.Labyrinth seal knot
Structure is the seal groove that Vehicle Processing on the rotary shaft is similar to labyrinth, realizes and seals by labyrinth structure, but labyrinth seal structure
Sealing effect it is poor, reduce the Performance And Reliability of product.O-ring seals sealing structure is as shown in Figure 1, including rotation axis
2 and the axle sleeve 1 for rotation axis insertion, the inner wall of axle sleeve 1 is equipped with sealing ring mounting groove, O shapes is provided with sealing ring mounting groove
Sealing ring 7, realize rotatory sealing in use, coordinating at the same time with axle sleeve and rotation axis seal by sealing ring 7.
In order to ensure sealing effect, O-ring seals need the more tightly outer circumferential surface cooperation with rotation axis, thus frictional force compared with
Greatly, and due to the dynamic sealing that is sealed between O-ring seals and rotation axis, O shapes during rotation axis is rotated relative to axle sleeve
Relative motion can be produced between sealing ring and rotation axis, therefore directly reduces the service life of O-ring seals, so as to cause to produce
The service life and reliability of product reduce, it is necessary to which frequent maintenance, maintenance cost is high, and can influence manufacturing schedule.And due to O shapes
The frictional force that sealing ring produces is larger, it is necessary to the driving force of rotation axis be improved, to the more demanding of driving force.
Utility model content
The purpose of this utility model is to provide a kind of rotary seal structure, is easily ground with solving existing rotary seal structure
Damage, short life and to rotation axis driving force require it is high the problem of.
To achieve the above object, the technical solution used in the utility model is：
Scheme 1：Rotary seal structure, including axle sleeve and rotation are plugged in the rotation axis in axle sleeve, the axle sleeve and rotation
Sealing ring is equipped between axis, the inner wall of the axle sleeve is equipped with inner groove, is equipped with self-lubricating slip ring in the inner groove, it is described from
The main ring body that slip ring includes being used for producing seal pressure between rotation axis under the action of the elastic contractile force of sealing ring is lubricated,
The sealing ring elastic cuffs, which are located at the radial outside of the main ring body and are sealed with the inner groove, to be coordinated, the footpath of the main ring body
Inside side is the sealing mating surface for coordinating with the sealing of the outer circumferential surface of rotation axis, and at least side of main ring body axial direction, which is equipped with, to be used
In the outside edge with sealing ring block cooperation vertically.
Using the above scheme, sealing ring, which can be bound round, is located on the main ring body of self-lubricating slip ring, makes main ring body radially inner side
Seal pressure is produced between sealing mating surface and rotation axis, realizes the sealing between rotation axis and self-lubricating slip ring, simultaneously as
Sealing ring coordinates with the inner groove sealing on axle sleeve, therefore can ensure the sealing between rotation axis and axle sleeve, and due to close
Frictional force between seal and axle sleeve is more than the friction between self-lubricating slip ring and rotation axis, therefore between sealing ring and axle sleeve
Static seal is sealed into, is not in abrasion, and itself wear-resisting property of self-lubricating slip ring is good, frictional force is small, compared with prior art,
Sealing ring in the utility model is not easy to wear, long lifespan, and can reduce the requirement to rotation axis driving force.Meanwhile when
When pressure medium between rotation axis and axle sleeve increases, pressure medium can apply self-lubricating slip ring the effect towards rotation axis
Power, ensure that sealing performance.
Scheme 2：According to the rotary seal structure described in scheme 1, the axial both sides of the main ring body are equipped with described rolled over
Side, the sealing ring are folded between two outside edges.The axial both sides of main ring body, which are respectively provided with outside edge, can improve sealing
Frictional force between circle and self-lubricating slip ring, avoids occurring sliding relatively between the two, and can make the deformation quantity set of sealing ring
In to radially, improve seal pressure.
Scheme 3：According to the rotary seal structure described in scheme 2, the height of the outside edge is less than the depth of the inner groove
Degree.It can be easy to the installation of self-lubricating slip ring using the program.
Scheme 4：According to the rotary seal structure described in scheme 1 or 2 or 3, one end of the axle sleeve is equipped with stepped hole, described
Inner groove is formed by the major diameter section of stepped hole, is inserted with the major diameter section for self-lubricating slip ring top pressure to be arrived stepped hole
Top pressure set on ladder end face.Set top pressure set to better ensure that sealing ring produces radial deformation when being squeezed, carry
High sealing improves sealing effect than pressure.And the dismounting of self-lubricating slip ring can be conveniently realized.
Scheme 5：It is equipped with according to the rotary seal structure described in scheme 4, at the opening's edge of the major diameter section and is used to guide top pressure
Set enters the guiding chamfering in major diameter section.
Scheme 6：According to the rotary seal structure described in scheme 4, the major diameter section is arranged on the remote medium entrance of axle sleeve
Side.
Scheme 7：According to the rotary seal structure described in scheme 1 or 2 or 3, the main ring body intersects vertically with outside edge, institute
State in smoothing junction between the radial outer side of main ring body and the axially inner side face of outside edge.Using the program, sealing ring can be more
Self-lubricating slip ring coordinates well, ensures uniform force.
Scheme 8：According to the rotary seal structure described in scheme 1 or 2 or 3, the thickness of the main ring body is less than outside edge
Thickness.The thickness of main ring body advantageously ensures that the excellent sealing of sealing ring and axle sleeve less than the thickness of outside edge.
Scheme 9：According to the rotary seal structure described in scheme 1 or 2 or 3, the self-lubricating slip ring is cut by engineering plastics
Shaping, can better ensure that the machining accuracy of the sealing mating surface of self-lubricating slip ring, ensure sealing effect.
Brief description of the drawings
Fig. 1 is the schematic diagram of rotary seal structure in the prior art；
Fig. 2 is the schematic diagram of rotary seal structure in the utility model；
Fig. 3 is the structure diagram of self-lubricating slip ring in Fig. 2.
Each reference numeral is corresponding entitled in figure：1- axle sleeves, 2- rotation axis, 3- stepped holes, 4- self-lubricating slip rings, 5- master
Ring body, 6- outside edges, 7- sealing rings, 8- top pressure sets, 9- guiding chamferings.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
One embodiment of the utility model rotary seal structure is as shown in Fig. 2 ~ Fig. 3, including axle sleeve 1 and rotation are plugged in
Rotation axis 2 in axle sleeve 1, one end of the axle sleeve 1 are equipped with stepped hole 3, and the major diameter section of stepped hole 3 forms inner groove, inner groove
In be equipped with self-lubricating slip ring 4, the self-lubricating slip ring 4 is to be cut by the engineering plastics with self-lubricating property by mechanical cold working
Type is whittled into, dimensionally stable, precision is high, can better ensure that sealing effect.
Self-lubricating slip ring 4 includes being used to produce sealing between rotation axis 2 under the action of the elastic contractile force of sealing ring 7
Than the main ring body 5 of pressure, 7 elastic cuffs of sealing ring are located at the radial outside of the main ring body 5 and the footpath of sealing ring 7 is outside
Side, seals with the inner groove and coordinates, and the radially inner side face of the main ring body 5 is for matching somebody with somebody with the sealing of the outer circumferential surface of rotation axis 2
The sealing mating surface of conjunction, the axial axial both sides of main ring body 5 are equipped with for the outside edge with the block cooperation vertically of sealing ring 7
6, the height of the outside edge 6 is less than the depth of the inner groove, and main ring body 5 intersects vertically with outside edge 6, and main ring body 5
Radial outer side and outside edge 6 axially inner side face between it is in smoothing junction so that 4 Formation cross-section of self-lubricating slip ring is U-shaped
Structure, the sealing ring 7 are folded between two outside edges 6.
It is inserted with the major diameter section of stepped hole 3 for by the top on the ladder end face of 4 top pressure of self-lubricating slip ring to stepped hole 3
Pressing sleeve 8, is equipped with the opening's edge of the major diameter section and is used to guide top pressure set 8 to enter the guiding chamfering 9 in major diameter sections, easy to top pressure set
8 installation.Also, the thickness of the main ring body 5 is less than the thickness of outside edge 6, it can ensure the good of outside edge 6 and sealing ring 7
It is good to coordinate.The major diameter section of stepped hole 3 is arranged far from the side of the medium entrance of axle sleeve, i.e. the side away from arrow, arrow in Fig. 2
Head represents the flow direction of medium.
During assembling, according to the projected life of product and the difference of operating pressure, the conduct of corresponding engineering plastics is selected to moisten certainly
Sliding slip ring 4, self-lubricating slip ring 4 is installed in rotation axis 2, and sealing ring 7 is radially expanded back ferrule and is tightened to self-lubricating slip ring 4
On, then rotation axis 2 is inserted into axle sleeve 1, load top pressure set 8, will be positioned in 4 top pressure of self-lubricating slip ring to ladder end face, and
By top pressure set 8 be fixed to axle sleeve 1 on, you can complete assembling, it is simple for structure it is compact, manufacture it is of low cost, use simplicity.
In the other embodiment of the utility model, it can also only set and be used for and sealing ring 7 in the axial side of main ring body 5
The outside edge 6 that block coordinates vertically.In addition, in the other embodiment of the utility model, the self-lubricating slip ring 4 on axle sleeve 1
It can also be arranged on the end of axle sleeve 1, and in 1 end set end cap of axle sleeve, the positioning of self-lubricating slip ring 4 is realized by end cap,
Or realize the positioning of self-lubricating slip ring 4 using other structures, such as clamp spring is set.Furthermore in the above-described embodiments, sealing ring
7 be O-ring seals 7, and in other embodiment, sealing ring 7 can also replace with other forms, such as the rectangle of rectangular cross-section is close
Seal 7.
Finally it should be noted that：The above descriptions are merely preferred embodiments of the present invention, is not limited to this
Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, it can still carry out the technical solution described in foregoing embodiments being not required to the modification made the creative labor, or
Person carries out equivalent substitution to which part technical characteristic.Where within the spirit and principles of the present invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included within the scope of protection of this utility model.
Claims (9)
1. rotary seal structure, including axle sleeve and rotation are plugged in the rotation axis in axle sleeve, set between the axle sleeve and rotation axis
There is sealing ring, it is characterised in that：The inner wall of the axle sleeve is equipped with inner groove, and self-lubricating slip ring, institute are equipped with the inner groove
State the master that self-lubricating slip ring includes being used for producing seal pressure between rotation axis under the action of the elastic contractile force of sealing ring
Ring body, the sealing ring elastic cuffs, which are located at the radial outside of the main ring body and are sealed with the inner groove, to be coordinated, the main ring
The radially inner side face of body is for the sealing mating surface with the sealing cooperation of the outer circumferential surface of rotation axis, at least side of main ring body axial direction
Equipped with for the outside edge with sealing ring block cooperation vertically.
2. rotary seal structure according to claim 1, it is characterised in that：The axial both sides of the main ring body are all provided with
Outside edge is stated, the sealing ring is folded between two outside edges.
3. rotary seal structure according to claim 2, it is characterised in that：The height of the outside edge is less than the inner ring
The depth of groove.
4. according to the rotary seal structure described in claim 1 or 2 or 3, it is characterised in that：One end of the axle sleeve is equipped with ladder
Hole, the inner groove are formed by the major diameter section of stepped hole, are inserted with the major diameter section for self-lubricating slip ring top pressure to be arrived
Top pressure set on the ladder end face of stepped hole.
5. rotary seal structure according to claim 4, it is characterised in that：It is equipped with the opening's edge of the major diameter section and is used to draw
Top pressure set is led into the guiding chamfering in major diameter section.
6. rotary seal structure according to claim 4, it is characterised in that：The major diameter section is arranged on remote Jie of axle sleeve
The side of matter import.
7. according to the rotary seal structure described in claim 1 or 2 or 3, it is characterised in that：The main ring body is vertical with outside edge
It is intersecting, it is in smoothing junction between the radial outer side of the main ring body and the axially inner side face of outside edge.
8. according to the rotary seal structure described in claim 1 or 2 or 3, it is characterised in that：The thickness of the main ring body is less than outer
The thickness of flanging.
9. according to the rotary seal structure described in claim 1 or 2 or 3, it is characterised in that：The self-lubricating slip ring is by engineering plastic
Expect cutting forming.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720980981X | 2017-08-08 | ||
| CN201720980981 | 2017-08-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207316070U true CN207316070U (en) | 2018-05-04 |
Family
ID=62433282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721083433.3U Active CN207316070U (en) | 2017-08-08 | 2017-08-28 | Rotary seal structure |
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| Country | Link |
|---|---|
| CN (1) | CN207316070U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112524049A (en) * | 2019-09-19 | 2021-03-19 | 大众汽车股份公司 | Fluid pump with exposed axially fixed return path ring |
| CN113236782B (en) * | 2021-04-29 | 2023-11-17 | 西安航天精密机电研究所 | High-pressure-resistant low-friction dynamic sealing structure |
-
2017
- 2017-08-28 CN CN201721083433.3U patent/CN207316070U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112524049A (en) * | 2019-09-19 | 2021-03-19 | 大众汽车股份公司 | Fluid pump with exposed axially fixed return path ring |
| CN113236782B (en) * | 2021-04-29 | 2023-11-17 | 西安航天精密机电研究所 | High-pressure-resistant low-friction dynamic sealing structure |
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