CN201802873U - Lip-shaped sealing ring of rotating shaft - Google Patents
Lip-shaped sealing ring of rotating shaft Download PDFInfo
- Publication number
- CN201802873U CN201802873U CN2010201109210U CN201020110921U CN201802873U CN 201802873 U CN201802873 U CN 201802873U CN 2010201109210 U CN2010201109210 U CN 2010201109210U CN 201020110921 U CN201020110921 U CN 201020110921U CN 201802873 U CN201802873 U CN 201802873U
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- China
- Prior art keywords
- rotary shaft
- sealing
- lip seal
- lip
- supporting ring
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- Expired - Fee Related
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Abstract
The utility model belongs to the technical field of engineering, and particularly relates to a rotating shaft sealing technology. The utility model relates to a lip-shaped sealing ring of a rotating shaft. The sealing ring comprises a metal skeleton (1), a sealing rubber body (2), a spring (3) and a support ring (5); a backflow line (4) is arranged on the circumference of a lip opening; a thin waist design is adopted; the lower part of the support ring (5) is bonded with the rubber body (2); and a clearance is reserved between the upper part of the outer surface of the support ring and the waist (6) of the sealing rubber body. The sealing ring has the advantages of good following performance with the shaft, high anti-deformation ability, excellent pressure bearing performance, high designability, good sealing effect in a high-speed and high-pressure state, and wide application range, and is particularly suitable for high-speed and high-pressure rotating sealing; besides, in a state of 25m/s to 30m/s or a higher linear speed, the application pressure can be increased from 0.03MPa to 0.08MPa.
Description
One, affiliated technical field
The utility model belongs to field of engineering technology, relates to sealing technique, particularly the rotation axis seal technology.
Two, background technique
Vehicle motor mostly is the rubber-coated goods in metal frame surface with the oil sealing rotary shaft lip seal, is made up of metal frame, lock ring spring and rubbery sealed body, realizes the purpose of oil sealing by spring locking rubbery sealed body.Rotary shaft lip seal has formed the dimension series standard, and suitable sealing load is no more than 0.03MPa, not mentioned suitable linear velocity problem.Under axle high speed and high pressure rotary state, because rubber body produces distortion, non-deformability is little, withstand voltage properties is low, will cause phenomenons such as rotary shaft lip seal damages, extrudes in case internal pressure increases or operating temperature is too high, thereby cause the sealing failure, cause leakage.
" Sealing service manual " (China Machine Press, 1994,12, p176-177) introduce, for harsh occasions such as high linear speeds, adopt the reflow type rotary shaft lip seal, obtain the dynamic pressure return-flow effect, improve sealability by adopt regular decorative pattern such as screw thread, ripple, projection in the lip rear surface.
It is the High-pressure oil sealing of purpose to improve sealing load that ZL 02212591.4 has introduced a kind of, skeleton internal surface bottom at rotary shaft lip seal is provided with supporting ring, the bottom of supporting ring and skeleton internal surface hang down end in contact, the side contacts with rubber body, structure as shown in Figure 1, during the rubber body pressurized, produce the distortion of sliding, improve the bearing capacity of oil seal lip and waist, improve seal durability and bearing capacity, not mentioned suitable linear velocity problem.Simultaneously, the High-pressure oil sealing supporting ring side that this scheme relates to is wrapped up by rubber body, forms closely contact, and followability is relatively poor when axle moves, and can't bear the high speed rotating of axle, can't satisfy the high speed and high pressure usage requirement.
Three, summary of the invention
The purpose of this utility model is at the leakage problem of rotary shaft lip seal under the high speed and high pressure condition, for improving the reliability of Sealing under the high speed and high pressure condition, provides a kind of rotary shaft lip seal that uses under the high speed and high pressure state that is applicable to.
The purpose of this utility model is achieved in that and adopts thin waist design, improves the flexibility of rotary shaft lip seal waist, improves followability; Adopt the supporting ring structure, and between supporting ring and rotary shaft lip seal waist preset clearance, buffering, the pressure of decomposition on rotary shaft lip seal improve the non-deformability of rotary shaft lip seal, assurance followability; Lip is provided with return wire, adapts to the high speed rotating sealing.
The rotary shaft lip seal that the utility model relates to, form by metal frame 1, caulking gum body 2, spring 3 and supporting ring 5, return wire 4 is arranged on the lip circumference, it is characterized in that caulking gum body waist 6 thickness are between 0.8mm～1.8mm, supporting ring 5 bottoms and caulking gum body 2 bondings, supporting ring 5 outer surface tops and caulking gum body waist 6 internal surfaces leave the gap, and structure as shown in Figure 2.
The rotary shaft lip seal that the utility model relates to is made up of metal frame 1, caulking gum body 2, spring 3 and supporting ring 5, and return wire 4 is arranged on the lip circumference, and it is characterized in that: metal frame 1 is for exposing skeleton.
The rotary shaft lip seal that the utility model relates to is made up of metal frame 1, caulking gum body 2, spring 3 and supporting ring 5, and return wire 4 is arranged on the lip circumference, it is characterized in that: metal frame 1 is interior bag skeleton.
The rotary shaft lip seal that the utility model relates to, form by metal frame 1, caulking gum body 2, spring 3 and supporting ring 5, return wire 4 is arranged on the lip circumference, it is characterized in that: supporting ring 5 outer surface tops and caulking gum body 2 waist internal surface gaps are between 0.5mm～2mm.
The rotary shaft lip seal that the utility model relates to is made up of metal frame 1, caulking gum body 2, spring 3 and supporting ring 5, and return wire 4 is arranged on the lip circumference, it is characterized in that: lip return wire 4 is the variable cross section return wire.
The rotary shaft lip seal that the utility model relates to is made up of metal frame 1, caulking gum body 2, spring 3 and supporting ring 5, and return wire 4 is arranged on the lip circumference, it is characterized in that: secondary lip is arranged.
The rotary shaft lip seal that the utility model relates to, when the axle high speed and high pressure rotates, better with the followability of axle, and available buffer, the pressure of decomposition on rotary shaft lip seal, improve non-deformability, the load performance of rotary shaft lip seal, thereby prolong the working life of rotary shaft lip seal.
The rotary shaft lip seal that the utility model relates at 25m/s～30m/s or more under the high linear speed state, is suitable for pressure and brings up to 0.08MPa by 0.03MPa, realizes the effectively sealing down of high speed and high pressure state.
The rotary shaft lip seal that the utility model relates to, designability is strong, can be according to concrete usage requirement design.
Four, description of drawings
The oil seal structure schematic representation that Fig. 1 ZL 02212591.4 introduces
Bag matrix type rotary shaft lip seal structural representation in Fig. 2
Fig. 3 assembling type exposes matrix type rotary shaft lip seal structural representation
The secondary lip rotary shaft lip seal of Fig. 4 band structural representation
Wherein: 1-skeleton, 2-caulking gum body, 3-lock ring spring, 4-return wire, 5-supporting ring, 6-waist
Five, embodiment
Below in conjunction with accompanying drawing embodiment the technological scheme that the utility model relates to is described in further detail, but not as the restriction that model utility is related to the technological scheme intension.
Embodiment one
The skeleton rotary shaft lip seal of interior bag of a kind of diameter of axle 50mm, structure as shown in Figure 2, basic external diameter is 70mm, basic width is 8mm, and the thick 0.8mm of waist, lip have left-handed variable cross section return wire 4, modified Teflon supporting ring 5, outer lower portion and caulking gum body bonding, supporting ring 5 tops and waist gap 0.5mm, all the other parameters design by the GB requirement.
This routine rotary shaft lip seal satisfies 0.08MPa, the sealing of 25m/s high speed rotating, and sealing is reliable, does not have to leak.
Embodiment two
The mount type of a kind of diameter of axle 240mm exposes skeleton rotary shaft lip seal, structure as shown in Figure 3, basic external diameter is 270mm, basic width is 15mm, the thick 1.8mm of waist, lip have dextrorotation variable cross section return wire 4, " L " type supporting ring 5, supporting ring 5 outside and waist gap 2mm, all the other parameters design by the GB requirement.
This routine rotary shaft lip seal satisfies 0.08MPa, 25m/s～30m/s high speed rotating sealing, and sealing is reliable, does not have to leak.
Embodiment three
The skeleton rotary shaft lip seal of bag in the secondary lip of the band of a kind of diameter of axle 100mm, structure as shown in Figure 4, basic external diameter is 125mm, basic width is 12mm, the thick 1.4mm of waist, lip has two-way variable cross section return wire 4, and the supporting ring internal diameter is 102mm, between the diameter of axle and lip crown root portion diameter, the supporting ring height is that lip crown root portion is to secondary lip root distance, supporting ring bottom rounding off and with secondary lip root bonding, top rounding off and waist gap 1mm, all the other parameters design by the GB requirement.
This routine rotary shaft lip seal satisfies the high speed rotating sealing under 0.08MPa, 25m/s～30m/s, the more environment of dust, and sealing is reliable, does not have to leak.
Claims (6)
1. rotary shaft lip seal, form by metal frame (1), caulking gum body (2), spring (3) and supporting ring (5), return wire (4) is arranged on the lip circumference, it is characterized in that caulking gum body waist (6) thickness is between 0.8mm～1.8mm, supporting ring (5) bottom and caulking gum body (2) bonding, supporting ring (5) outer surface top and caulking gum body waist (6) internal surface leave the gap.
2. the rotary shaft lip seal that relates to of claim 1, it is characterized in that: metal frame (1) is for exposing skeleton.
3. the rotary shaft lip seal that relates to of claim 1, it is characterized in that: metal frame (1) is interior bag skeleton.
4. the rotary shaft lip seal that relates to of claim 1, it is characterized in that: supporting ring (5) outer surface top and caulking gum body (2) waist (6) internal surface gaps are between 0.5mm～2mm.
5. the rotary shaft lip seal that relates to of claim 1, it is characterized in that: lip return wire (4) is the variable cross section return wire.
6. arbitrary rotary shaft lip seal of relating to of claim 1～5 is characterized in that: secondary lip is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201109210U CN201802873U (en) | 2010-02-10 | 2010-02-10 | Lip-shaped sealing ring of rotating shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201109210U CN201802873U (en) | 2010-02-10 | 2010-02-10 | Lip-shaped sealing ring of rotating shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201802873U true CN201802873U (en) | 2011-04-20 |
Family
ID=43872372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201109210U Expired - Fee Related CN201802873U (en) | 2010-02-10 | 2010-02-10 | Lip-shaped sealing ring of rotating shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201802873U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537360A (en) * | 2012-01-20 | 2012-07-04 | 重庆杜克高压密封件有限公司 | Assembled half-exposed framework high-pressure seal ring |
| CN104832652A (en) * | 2015-04-15 | 2015-08-12 | 广州机械科学研究院有限公司 | High-pressure oil seal assembly |
| CN110770484A (en) * | 2017-06-27 | 2020-02-07 | Nok株式会社 | Sealing ring |
| CN112728095A (en) * | 2021-02-07 | 2021-04-30 | 青岛众力诚达智能科技有限公司 | Variable cross-section rotary sealing structure |
| CN115026602A (en) * | 2022-06-08 | 2022-09-09 | 国家石油天然气管网集团有限公司 | Main shaft double-seal structure suitable for tapping machine |
-
2010
- 2010-02-10 CN CN2010201109210U patent/CN201802873U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537360A (en) * | 2012-01-20 | 2012-07-04 | 重庆杜克高压密封件有限公司 | Assembled half-exposed framework high-pressure seal ring |
| CN102537360B (en) * | 2012-01-20 | 2015-02-04 | 重庆杜克高压密封件有限公司 | Assembled half-exposed framework high-pressure seal ring |
| CN104832652A (en) * | 2015-04-15 | 2015-08-12 | 广州机械科学研究院有限公司 | High-pressure oil seal assembly |
| CN104832652B (en) * | 2015-04-15 | 2018-01-23 | 广州机械科学研究院有限公司 | A kind of high pressure Oil sealing assembly |
| CN110770484A (en) * | 2017-06-27 | 2020-02-07 | Nok株式会社 | Sealing ring |
| CN112728095A (en) * | 2021-02-07 | 2021-04-30 | 青岛众力诚达智能科技有限公司 | Variable cross-section rotary sealing structure |
| CN115026602A (en) * | 2022-06-08 | 2022-09-09 | 国家石油天然气管网集团有限公司 | Main shaft double-seal structure suitable for tapping machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110420 Termination date: 20180210 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |