CN210484609U - Novel rotary shaft lip-shaped sealing ring - Google Patents
Novel rotary shaft lip-shaped sealing ring Download PDFInfo
- Publication number
- CN210484609U CN210484609U CN201921256930.8U CN201921256930U CN210484609U CN 210484609 U CN210484609 U CN 210484609U CN 201921256930 U CN201921256930 U CN 201921256930U CN 210484609 U CN210484609 U CN 210484609U
- Authority
- CN
- China
- Prior art keywords
- lip
- rotary shaft
- main lip
- steel wire
- main
- 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.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 34
- 229920001971 elastomer Polymers 0.000 claims abstract description 37
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 20
- 239000010959 steel Substances 0.000 claims abstract description 20
- 239000012528 membrane Substances 0.000 claims abstract description 13
- 239000000428 dust Substances 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 10
- 230000006835 compression Effects 0.000 claims abstract description 5
- 238000007906 compression Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 6
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 2
- 244000043261 Hevea brasiliensis Species 0.000 claims description 2
- 229910000639 Spring steel Inorganic materials 0.000 claims description 2
- 239000010962 carbon steel Substances 0.000 claims description 2
- PYLLWONICXJARP-UHFFFAOYSA-N manganese silicon Chemical compound [Si].[Mn] PYLLWONICXJARP-UHFFFAOYSA-N 0.000 claims description 2
- 229920003052 natural elastomer Polymers 0.000 claims description 2
- 229920001194 natural rubber Polymers 0.000 claims description 2
- 229920001195 polyisoprene Polymers 0.000 claims description 2
- 229920002379 silicone rubber Polymers 0.000 claims description 2
- 230000003746 surface roughness Effects 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 210000001503 joint Anatomy 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000002028 premature Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
Abstract
The utility model discloses a novel rotary shaft lip-shaped sealing ring, which supports a sealing rubber body through a metal framework, prevents the sealing rubber body from deforming and extruding, increases the anti-deformation capacity of a main lip through a steel wire, reduces the deformation amount of the main lip when the main lip is pressed by oil pressure, increases the sealing performance, has better axial and radial buffer performance through an inner hub and a rubber membrane, can adapt to larger different axial degrees of a rotary shaft, enables the main lip and the rubber membrane to be tightly attached through the matching of a groove and a compression spring, changes the generated oil seal originally positioned between the main lip and the rotary shaft into the oil seal positioned between the main lip and the rubber membrane through the matching of the main lip and the rubber membrane, has low requirements on the non-roundness and the surface roughness of the rotary shaft, is insensitive to the slight damage of the surface of the shaft, reduces the requirements on the rotary shaft, and forms an irregular-shaped channel through an upper dust lip and a lower dust, external dust and water are more difficult to enter the cavity, and the service life of the sealing ring is prolonged.
Description
Technical Field
The utility model relates to a rotation axis lip seal technical field, concrete field is a novel rotation axis lip seal.
Background
The rotary shaft lip seal ring prevents the leakage of bearing lubricating oil through the interference contact of flexible seal lip and axle, and on the structural design, because the oil blanket that adopts at present in a large number is directly carried out interference fit with the rotation axis and is realized the movive seal, it all has very strict requirements to the eccentricity, dimensional deviation, out-of-roundness, surface roughness etc. of rotation axis:
(1) the eccentricity of the shaft, the magnitude of which directly affects the distribution state of the contact stress of the lip of the oil seal, is usually required to be within 0.3mm, but is difficult to achieve in many cases. Eccentricity occurs, and leakage of a sealing medium easily occurs as the thickness of an oil film between the lip portion forming the elliptical sealing surface lip and the shaft increases with eccentric rotation of the rotating shaft.
(2) Dimensional deviation of shaft: a good sealing effect is only possible if the dimensional deviations of the shafts are chosen correctly. An excessively large shaft increases lip contact load, while an excessively small shaft may cause insufficient sealing pressure at the lip contact surface. Excessive pressure can cause premature seal failure, while too low a contact pressure can cause leakage.
(3) Out-of-roundness of the shaft: shaft out-of-roundness is likely to cause the elastomeric sealing lip to deform or lose elasticity following irregular movement of the shaft, thereby causing fatigue failure.
(4) The roughness of the surface of the shaft is generally specified to be Ra1.6-3.2 mu m, the surface is too smooth, the formation and the maintenance of an oil film are not facilitated, a sealing ring is subjected to dry friction, and the shaft is easy to burn and cause leakage; too coarse, frictional wear is exacerbated, and can also cause premature failure of the seal.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a novel rotation axis lip seal to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a novel rotary shaft lip-shaped sealing ring comprises an inner hub, a metal framework, a sealing rubber body and a compression spring, wherein the sealing rubber body is sleeved on the outer wall of the inner hub in a sliding manner and consists of an outer ring, a main lip, an upper dustproof lip and a waist, one end of the waist is fixedly connected with the upper part of the side wall of the main lip, the other end of the waist is fixedly connected with the upper part of the side wall of the upper dustproof lip, the outer ring is positioned on the upper surface of the waist, the metal framework is positioned in the outer ring, a groove is arranged at the top of the main lip, the compression spring is fixed in the groove, the lower dustproof lip is fixedly connected with the right side end of the inner hub, the shapes of the upper dustproof lip and the lower dustproof lip are both in abnormal shapes, the bottom end of the main lip is tightly attached to the upper surface of the inner hub, and the left and right ends of the upper dustproof lip, go up between the lower surface of dustproof lip and the upper surface of lower dustproof lip and form the passageway, the surface of interior hub is equipped with the rubber membrane, the inside of owner lip is equipped with the steel wire, steel wire and owner lip integrated into one piece, the shape of steel wire is positive and negative alternative arch.
Preferably, the left side surface of the main lip is provided with a backflow line, and the backflow line is one of regular patterns such as threads, ripples or bumps.
Preferably, the diameter of the steel wire is 0.5mm-1.5mm, and the material of the steel wire is one of carbon steel or silicon-manganese spring steel.
Preferably, the thickness of the rubber membrane is 0.2mm-0.7mm, and the material of the rubber membrane is one of polyisoprene natural rubber or silicon rubber.
Compared with the prior art, the beneficial effects of the utility model are that: a novel rotary shaft lip-shaped sealing ring supports a sealing rubber body through a metal framework, prevents the sealing rubber body from deforming and extruding, increases the deformation resistance of a main lip through a steel wire, reduces the deformation amount of the main lip when the main lip is subjected to oil pressure, increases the sealing performance, has better axial and radial buffer performance through an inner hub and a rubber film, can adapt to larger different axial degrees of a rotary shaft, enables the main lip and the rubber film to be tightly attached through the matching of a groove and a compression spring, changes the generated oil seal originally positioned between the main lip and the rotary shaft into the oil seal positioned between the main lip and the rubber film through the matching of the main lip and the rubber film, has low requirements on the non-roundness and the surface roughness of the rotary shaft, is insensitive to slight damage on the surface of the shaft, reduces the requirements on the rotary shaft, and forms an irregular-shaped channel between the upper dustproof lip and the lower dustproof lip through the butt joint of the upper dustproof lip, external dust and water are more difficult to enter the cavity, and the service life of the sealing ring is prolonged.
Drawings
Fig. 1 is a schematic cross-sectional structure of the present invention;
fig. 2 is a schematic structural view of the main lip and the steel wire of the present invention.
In the figure: 1-inner hub, 2-metal framework, 3-sealing rubber body, 31-outer ring, 32-main lip, 33-upper dustproof lip, 34-waist, 4-contraction spring, 5-groove, 6-lower dustproof lip, 7-channel, 8-rubber film, 9-steel wire and 10-return line.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 and fig. 2, the present invention provides a technical solution: a novel rotary shaft lip-shaped sealing ring comprises an inner hub 1, a metal framework 2, a sealing rubber body 3 and a tightening spring 4, wherein the sealing rubber body 3 is sleeved on the outer wall of the inner hub 1 in a sliding manner, the sealing rubber body 3 consists of an outer ring 31, a main lip 32, an upper dustproof lip 33 and a waist 34, one end of the waist 34 is fixedly connected with the upper part of the side wall of the main lip 32, the other end of the waist 34 is fixedly connected with the upper part of the side wall of the upper dustproof lip 33, the outer ring 31 is positioned on the upper surface of the waist 34, the metal framework 2 is positioned inside the outer ring 31, a groove 5 is arranged at the top of the main lip 32, the tightening spring 4 is fixed in the groove 5, the lower dustproof lip 6 is fixedly connected with the right side end of the inner hub 1, the upper dustproof lip 33 and the lower dustproof lip 6 are both in special shapes, the bottom end of the main lip 32 is tightly attached to the upper, the left end and the right end of the upper dustproof lip 33 are respectively tightly attached to the left end and the right end of the lower dustproof lip 6, a channel 7 is formed between the lower surface of the upper dustproof lip 33 and the upper surface of the lower dustproof lip 6, an irregular-shaped channel 7 is formed between the upper dustproof lip 33 and the lower dustproof lip 6 through butt joint of the upper dustproof lip 33 and the lower dustproof lip 6, external dust and impurities are prevented from entering the sealing ring, a rubber film 8 is arranged on the surface of the inner hub 1, the inner hub 1 and the rubber film 8 have good axial and radial buffering performance and can adapt to large different axial degrees of a rotating shaft, an original oil seal generated between the main lip 32 and the rotating shaft is changed to be between the main lip 32 and the rubber film 8 through matching of the main lip 32 and the rubber film 8, so that the requirement on the roundness and the surface roughness of the rotating shaft is not high, the slight damage to the surface of the shaft is not, the steel wire 9 is arranged inside the main lip 32, the steel wire 9 and the main lip 32 are integrally formed, the steel wire 9 is in an arch shape with the front and the back alternately, the deformation resistance of the main lip 32 is improved through the steel wire 9, and the deformation amount of the main lip 32 under the condition of oil pressure is reduced.
Specifically, the return line 10 is provided on the left side surface of the main lip 32, the return line 10 is one of regular patterns such as a thread, a ripple, or a bump, the main lip 32 can obtain a dynamic pressure return effect through the return line 10, the sealing effect can be effectively increased, the pattern shape of the return line 10 is not related to the sealing effect, and different patterns can be selected according to the processing conditions in the processing return line 10 only for facilitating the processing.
The working principle is as follows: the hub 1 cover is on the rotation axis in the surface is equipped with rubber membrane 8, overlaps the sealing rubber body 3 cover and establishes on hub 1 outer wall in, and sealing rubber body 3 is including outer lane 31 that is equipped with metal framework 2, the main lip 32 of built-in steel wire 9, the last dust lip 33 that is used for waist 34 and the waist 34 right side end of connecting, with the bottom of main lip 32 and the surface laminating of rubber membrane 8, will go up the lower dust lip 6 butt joint of dust lip 33 and the hub 1 right side end in.
Through actual test, survey the rubber membrane 8 of different thickness and material and the sealed effect of the novel rotation axis lip seal circle of assembling of the steel wire 9 of different diameters and material as follows:
although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a novel rotation axis lip seal circle, includes interior hub (1), metal framework (2), the sealing rubber body (3), reduces spring (4), its characterized in that: the sealing rubber body (3) is sleeved on the outer wall of the inner hub (1) in a sliding manner, the sealing rubber body (3) is composed of an outer ring (31), a main lip (32), an upper dustproof lip (33) and a waist (34), one end of the waist (34) is fixedly connected with the upper portion of the side wall of the main lip (32), the other end of the waist (34) is fixedly connected with the upper portion of the side wall of the upper dustproof lip (33), the outer ring (31) is positioned on the upper surface of the waist (34), the metal framework (2) is positioned inside the outer ring (31), the top of the main lip (32) is provided with a groove (5), a compression spring (4) is fixed in the groove (5), the right side end of the inner hub (1) is fixedly connected with the lower dustproof lip (6), the upper dustproof lip (33) and the lower dustproof lip (6) are both in special-shaped shapes, the bottom of the main lip (32) is tightly attached to the upper surface of the inner hub (1), go up about both ends of dust lip (33) and closely laminate with the left and right sides both ends of lower dust lip (6) respectively, form passageway (7) between the lower surface of going up dust lip (33) and the upper surface of lower dust lip (6), the surface of interior hub (1) is equipped with rubber membrane (8), the inside of owner lip (32) is equipped with steel wire (9), steel wire (9) and owner lip (32) integrated into one piece, the shape of steel wire (9) is positive and negative arch in turn.
2. The novel rotary shaft lip seal according to claim 1, wherein: the left side surface of main lip (32) is equipped with return line (10), return line (10) are one of regular decorative pattern such as screw thread, ripple or lug.
3. The novel rotary shaft lip seal according to claim 1, wherein: the diameter of the steel wire (9) is 0.5mm-1.5mm, and the material of the steel wire (9) is one of carbon steel or silicon-manganese spring steel.
4. The novel rotary shaft lip seal according to claim 1, wherein: the thickness of the rubber membrane (8) is 0.2mm-0.7mm, and the material of the rubber membrane (8) is one of polyisoprene natural rubber or silicon rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921256930.8U CN210484609U (en) | 2019-08-06 | 2019-08-06 | Novel rotary shaft lip-shaped sealing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921256930.8U CN210484609U (en) | 2019-08-06 | 2019-08-06 | Novel rotary shaft lip-shaped sealing ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210484609U true CN210484609U (en) | 2020-05-08 |
Family
ID=70534377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921256930.8U Expired - Fee Related CN210484609U (en) | 2019-08-06 | 2019-08-06 | Novel rotary shaft lip-shaped sealing ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210484609U (en) |
-
2019
- 2019-08-06 CN CN201921256930.8U patent/CN210484609U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110486473B (en) | Novel rotary shaft lip-shaped sealing ring | |
| CN211874942U (en) | Self-lubricating wear-resistant bearing | |
| CN210484609U (en) | Novel rotary shaft lip-shaped sealing ring | |
| CN201802873U (en) | Lip-shaped sealing ring of rotating shaft | |
| CN212959552U (en) | Sealing structure of bearing for belt pulley of decoupler built in automobile generator | |
| CN201106630Y (en) | Composite joint dual-column cylindrical roller bearing | |
| CN208474321U (en) | A kind of automobile bearing of low wear rate | |
| CN201588936U (en) | Energy saving environmental protection oil seal | |
| CN202188034U (en) | Maintenance-free cross axle universal joint | |
| CN214036510U (en) | Self-aligning roller bearing with enhanced sealing and lubricating effects | |
| CN214534495U (en) | Integrated labyrinth floating carbon ring sealing system | |
| CN212106616U (en) | Labyrinth type sealing ball bearing | |
| CN201651326U (en) | Assembled rotary shaft seal ring | |
| CN201031764Y (en) | Hydroturbine chief axis non-contact type metallic sealing structure | |
| CN206419340U (en) | A kind of hub bearing being easily installed | |
| CN210440434U (en) | Bearing with built-in high-load capacity rolling body | |
| CN209228871U (en) | Nonstandard four point contacts roller bearing units | |
| CN207701609U (en) | A kind of sustainable lubrication bearing | |
| CN217873772U (en) | Closed deep groove ball bearing | |
| CN218325805U (en) | Angular contact radial spherical plain bearing | |
| CN210218685U (en) | Rotary sealing ring with spiral structure | |
| CN207485848U (en) | A kind of ball bearing | |
| CN207246231U (en) | Bearing with seal | |
| CN205173240U (en) | Ball bearing | |
| CN204878380U (en) | Pedestal seat with special sealing washer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200508 |