CN202301953U - Seal ring provided with active heat-dissipating function - Google Patents
Seal ring provided with active heat-dissipating function Download PDFInfo
- Publication number
- CN202301953U CN202301953U CN2011202815329U CN201120281532U CN202301953U CN 202301953 U CN202301953 U CN 202301953U CN 2011202815329 U CN2011202815329 U CN 2011202815329U CN 201120281532 U CN201120281532 U CN 201120281532U CN 202301953 U CN202301953 U CN 202301953U
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- rubber
- seal
- lip
- support ring
- connecting body
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Abstract
The utility model relates to a seal piece, in particular to a seal ring provided with an active heat-dissipating function. The seal ring comprises a rubber seal ring and an auxiliary heat-dissipating part, wherein the rubber seal ring comprises a spring and a main seal lip, and the auxiliary heat-dissipating part comprises a support ring, a rubber connecting body, a polytetrafluoroethylene (PTFE) lip, through holes and a spiral groove. The rubber seal ring is arranged on the inner side of the auxiliary heat-dissipating part, the annular outer surface of the rubber seal ring is in interference fit with the inner surface of the support ring, the section shape of the support ring is L-shaped, and the rubber connecting body is arranged on the inner side of the bottom of the support ring and located between the end face of the rubber seal ring and the support ring. One end of the rubber connecting body facing a rotating shaft is in vulcanizing connection with the PTFE lip, the other end of the PTFE lip is a trumpet-shaped structure in interference fit with the rotating shaft, at least one spiral groove is arranged on the contacting face of the PTFE lip and the rotating shaft, and the through holes are arranged on the annular bottom end face of the PTFE lip at intervals.
Description
Technical field
The utility model relates to a kind of Sealing, especially a kind of seal ring with active heat removal function.
Background technique
Rotary shaft lip seal is mainly used in the sealing between the parts that rotate relatively, prevents that the inner lubricant oil of machinery from leaking.Rotary shaft lip seal is generally made by the rubber material, because rubber has better elastic, wear resistance and medium-resistance, can guarantee that seal ring has excellent sealing performance and stability.In use, because the rubbing action that rotation produces can produce great amount of heat, especially in the primary seal lip oral area position that seal ring contacts with running shaft, the temperature at general lip position is than the high 20-30 of oil temperature ℃.When the permission serviceability temperature of temperature above the rubber material, rubber will wear out, and causes the rubber hardening until generation of cracks, breakage, causes the sealability of seal ring to reduce or forfeiture.The seal ring of existing structure as shown in Figure 1 only can rely on transmission of heat between the machinery parts to dissipate because fricative heat in use, but the dissipation mode of this passive heat acts on very little with respect to the heat that produces.Therefore in higher line speed or have under the situation of pressure, existing seal ring tends to cause ageing of rubber because temperature is too high, seriously reduces the working life of seal ring.
The model utility content
The purpose of the utility model has been to propose a kind of seal ring with active heat removal function; It has improved the heat dispersion of seal ring; It is aging to prevent effectively that rubber from taking place, and makes rubber seal can be applicable to high speed rotating and the working environment that has pressure.
The utility model is that the technological scheme below adopting realizes: a kind of seal ring with active heat removal function; Comprise rubber seal and auxiliary heat dissipation parts; Rubber seal comprise spring and with the primary seal lip of running shaft interference fit, wherein, described auxiliary heat dissipation parts comprise support ring, rubber connecting body, PTFE lip, through hole and spiral grooves; Rubber seal is arranged on the inboard of auxiliary heat dissipation parts; Be interference fit between the annular outer surface of rubber seal and the support ring internal surface, the sectional shape of support ring is L-shaped, and the bottom inside of support ring is provided with the rubber connecting body; The rubber connecting body is between the end face and support ring of rubber seal; The rubber connecting body is connected with the PTFE lip towards the end sulfuration of running shaft, and an end of PTFE lip is connected with the rubber connecting body, and the other end is the horn-like structure that is interference fit with running shaft; The surface of contact of PTFE lip and running shaft is provided with at least one spiral grooves, and the circular bottom part end face of PTFE lip is interval with through hole.
In the present embodiment, all be interval with through hole on the circular bottom part of said support ring and the rubber connecting body, the through hole of through hole on the support ring and rubber connecting body, the through hole of PTFE lip are interconnected.
The edge of the bottom margin of said support ring and rubber connecting body lays respectively at the outside of the through hole on the PTFE lip.
The shape of said through hole can be circle, ellipse, quadrilateral, polygonal or other shape.
Magnitude of interference between said PTFE lip and the running shaft is 0.2-0.5mm, has good cooperating to guarantee the PTFE lip with running shaft, simultaneously again can be owing to the too much heat of friction-produced.
The Hand of spiral of said spiral grooves can be left-handed or dextrorotation, and its Hand of spiral will be confirmed according to the moving direction of running shaft.The sectional shape of spiral grooves can or have other shape of certain space size for rectangle, trapezoidal, triangle, semicircle, arc.Spiral grooves can play pump-absorb action to the air between PTFE lip and the running shaft.
The beneficial effect of the utility model is: through the auxiliary heat dissipation parts are set; Make the primary seal lip place can active heat removal; Improved the heat dispersion of rubber seal greatly, made the primary seal lip be in high speed rotating and perhaps exist the situation of pressure still can remain in the rational temperature scope, thereby can prevent ageing of rubber; Make rubber seal have better seal property and stability, and prolonged the working life of rubber seal.
Description of drawings
Fig. 1 is the half sectional view of existing rotary shaft lip seal;
Fig. 2 is the half sectional view that has the seal ring of active heat removal function among the embodiment 1;
Fig. 3 is the half sectional view that has the seal ring of active heat removal function among the embodiment 2.
Among the figure: the 1-rubber seal; 11-primary seal lip; 2-auxiliary heat dissipation parts; The 21-support ring; 22-rubber connecting body; The 23-PTFE lip; The 24-through hole; The 25-spiral grooves.
Embodiment
Below in conjunction with accompanying drawing the utility model is further specified.
Fig. 2 is embodiment's 1 described seal ring with active heat removal function.The sealing circle comprises rubber seal 1 and auxiliary heat dissipation parts 2; Rubber seal 1 comprises spring and primary seal lip 11; Spring is positioned at the outside of primary seal lip 11; Elastic force in the spring makes between primary seal lip 11 and the running shaft and is interference fit, thereby makes primary seal lip 11 play seal action.Auxiliary heat dissipation parts 2 comprise support ring 21, rubber connecting body 22, PTFE lip 23, through hole 24 and spiral grooves 25.Rubber seal 1 is arranged on the inboard of auxiliary heat dissipation parts 2, and is interference fit between the annular outer surface of rubber seal 1 and support ring 21 internal surfaces, is connected to an integral body through interference fit between rubber seal 1 and the auxiliary heat dissipation parts 2.The sectional shape of support ring 21 is L-shaped, and the bottom inside of support ring 21 is provided with rubber connecting body 22, and rubber connecting body 22 is between the end face and support ring 21 of rubber seal 1.
The bottom of support ring 21 is provided with a plurality of through holes 24, and through hole 24 is provided with along the ring surface of support ring 21 bottoms at interval, and the shape of through hole 24 can be circle, ellipse, quadrilateral, polygonal or other shape, and through hole 24 is of a size of 1-3mm.Corresponding also is provided with through hole on the bottom end face of rubber connecting body 22 and PTFE lip 23; Through hole on through hole on the support ring 21 and rubber connecting body 22 and the PTFE lip 23 is interconnected, thereby has realized the air at primary seal lip 11 places and being communicated with of ambient air.
When the sealing circle uses, because the turning effort of running shaft, the spiral grooves 25 of running shaft and PTFE lip 23 matching parts will produce pump-absorb action to air therebetween; Thereby make a large amount of air get into auxiliary heat dissipation parts 2 inside through spiral grooves 25; And primary seal lip 11 positions of arrival seal ring 1, producing heat exchange at primary seal lip 11 places, air is turned back then; Be discharged outside to through through hole 24, thereby realize radiating and cooling primary seal lip 11.Because the continuous running of running shaft; Therefore the above-mentioned heat exchanging process radiating and cooling that can continue primary seal lip 11; Even thereby having guaranteed running up or pressure is arranged and causing under the situation more than the frictional heat, the temperature at primary seal lip 11 places still can remain in the rational temperature scope, thus the rubber that prevents primary seal lip 11 takes place aging; Guarantee that seal ring has excellent sealing performance and stability, and prolonged the working life of seal ring.
Fig. 3 is embodiment's 2 described seal rings with active heat removal function.Different with embodiment 1 is: through hole is set on the bottom end face of PTFE lip 23 at interval.Because the bottom margin of support ring 21 and the edge of rubber connecting body 22 all are positioned at the outside of through hole, need not to be provided with through hole on support ring 21 and the rubber connecting body 22.
Other is with embodiment 1.
Claims (6)
1. seal ring with active heat removal function; Comprise rubber seal (1) and auxiliary heat dissipation parts (2); Rubber seal (1) comprise spring and with the primary seal lip (11) of running shaft interference fit; It is characterized in that: described auxiliary heat dissipation parts (2) comprise support ring (21), rubber connecting body (22), PTFE lip (23), through hole (24) and spiral grooves (25), and rubber seal (1) is arranged on the inboard of auxiliary heat dissipation parts (2), are interference fit between the annular outer surface of rubber seal (1) and support ring (21) internal surface; The sectional shape of support ring (21) is L-shaped; The bottom inside of support ring (21) is provided with rubber connecting body (22), and rubber connecting body (22) is positioned between the end face and support ring (21) of rubber seal (10), and rubber connecting body (22) is connected with PTFE lip (23) towards the end sulfuration of running shaft; One end of PTFE lip (23) is connected with rubber connecting body (22); The other end is the horn-like structure that is interference fit with running shaft, and PTFE lip (23) is provided with at least one spiral grooves (25) with the surface of contact of running shaft, and the circular bottom part end face of PTFE lip (23) is interval with through hole.
2. the seal ring with active heat removal function according to claim 1; It is characterized in that: all be interval with through hole on the circular bottom part of said support ring (21) and the rubber connecting body (22), the through hole (24) on the support ring (21) is interconnected with the through hole of the through hole of rubber connecting body (22), PTFE lip (23).
3. the seal ring with active heat removal function according to claim 1 is characterized in that: the edge of the bottom margin of said support ring (21) and rubber connecting body (22) lays respectively at the outside of the through hole of PTFE lip (23).
4. according to claim 1,2 or 3 described seal rings, it is characterized in that with active heat removal function: through hole (24) be shaped as circle, ellipse, quadrilateral or polygonal.
5. the seal ring with active heat removal function according to claim 1 is characterized in that: the magnitude of interference between said PTFE lip (23) and the running shaft is 0.2-0.5mm.
6. the seal ring with active heat removal function according to claim 1 is characterized in that: the sectional shape of said spiral grooves (25) is rectangle, trapezoidal, triangle, semicircle or arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202815329U CN202301953U (en) | 2011-08-04 | 2011-08-04 | Seal ring provided with active heat-dissipating function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202815329U CN202301953U (en) | 2011-08-04 | 2011-08-04 | Seal ring provided with active heat-dissipating function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202301953U true CN202301953U (en) | 2012-07-04 |
Family
ID=46370851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202815329U Expired - Fee Related CN202301953U (en) | 2011-08-04 | 2011-08-04 | Seal ring provided with active heat-dissipating function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202301953U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105008775A (en) * | 2013-02-27 | 2015-10-28 | 株式会社小松制作所 | Oil seal |
| CN107076306A (en) * | 2015-01-08 | 2017-08-18 | Nok株式会社 | Sealing device |
| CN107687516A (en) * | 2014-06-10 | 2018-02-13 | Nok株式会社 | Sealing device |
| CN110397742A (en) * | 2012-08-23 | 2019-11-01 | 伊格尔工业股份有限公司 | Sealing device |
| CN110914580A (en) * | 2017-07-21 | 2020-03-24 | 尼得科Gpm有限公司 | Sealing device with chamber |
| CN112963540A (en) * | 2021-02-07 | 2021-06-15 | 青岛众力诚达智能科技有限公司 | Rotary sealing structure with supporting lip |
-
2011
- 2011-08-04 CN CN2011202815329U patent/CN202301953U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110397742A (en) * | 2012-08-23 | 2019-11-01 | 伊格尔工业股份有限公司 | Sealing device |
| CN105008775A (en) * | 2013-02-27 | 2015-10-28 | 株式会社小松制作所 | Oil seal |
| CN105008775B (en) * | 2013-02-27 | 2017-09-29 | 株式会社小松制作所 | Oil sealing |
| US10060532B2 (en) | 2013-02-27 | 2018-08-28 | Komatsu Ltd. | Oil seal |
| CN107687516A (en) * | 2014-06-10 | 2018-02-13 | Nok株式会社 | Sealing device |
| US10352450B2 (en) | 2014-06-10 | 2019-07-16 | Nok Corporation | Sealing device |
| US10683935B2 (en) | 2014-06-10 | 2020-06-16 | Nok Corporation | Sealing device |
| CN107076306A (en) * | 2015-01-08 | 2017-08-18 | Nok株式会社 | Sealing device |
| CN107076306B (en) * | 2015-01-08 | 2019-01-11 | Nok株式会社 | sealing device |
| US10267422B2 (en) | 2015-01-08 | 2019-04-23 | Nok Corporation | Sealing device |
| CN110914580A (en) * | 2017-07-21 | 2020-03-24 | 尼得科Gpm有限公司 | Sealing device with chamber |
| CN112963540A (en) * | 2021-02-07 | 2021-06-15 | 青岛众力诚达智能科技有限公司 | Rotary sealing structure with supporting lip |
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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: 20120704 Termination date: 20140804 |
|
| EXPY | Termination of patent right or utility model |