CN202832216U - Spring energy storage bearing double seal ring of roller bit - Google Patents
Spring energy storage bearing double seal ring of roller bit Download PDFInfo
- Publication number
- CN202832216U CN202832216U CN 201220133520 CN201220133520U CN202832216U CN 202832216 U CN202832216 U CN 202832216U CN 201220133520 CN201220133520 CN 201220133520 CN 201220133520 U CN201220133520 U CN 201220133520U CN 202832216 U CN202832216 U CN 202832216U
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- seal
- spring energy
- ring
- spring
- storage
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- Expired - Fee Related
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Abstract
The utility model belongs to the technical field of roller bit bearing seal, and particularly provides a spring energy storage bearing double seal ring of a roller bit. The spring energy storage bearing double seal ring mainly comprises a head section bearing, a roller bit inner hole, two elastic seal rings and a seal groove, and is characterized in that the two elastic seal rings are installed in the seal groove in a back to back mode. Each seal ring is a spring energy storage seal ring composed of a spring inner ring and a seal outer shell. The inner rings are metal springs made of stainless steel materials, and the outer shells are made of plastic. Filler can be filled in the sections of the seal rings and can be silicon gel with low hardness and high-temperature resistant performance. The front edge of each seal outer shell is provided with an inner flange, an inner seal lip and an outer seal lip. The inner flanges are used for fixing the spring inner rings. Tension force of the spring inner rings jacks the inner seal lips and the outer seal lips to enable the inner seal lips and the outer seal lips to be contacted with two seal faces of the bearing seal groove to achieve seal between the head section bearing and the roller bit inner hole. The seal outer shells are made of the macromolecule plastic with good wear-resistant performance and small friction coefficient. Ability of a seal piece to adapt to high-speed rotation and ability of the seal system to adapt to internal and external differential pressure are improved, and seal service life is prolonged.
Description
Technical field
The utility model belongs to the cone bit bearing technical field of sealing technology.Be applicable to the closed type rock bit that oil, geology, engineering are used.
Background technology
The life-span of rock bit depends primarily on bearing.And the life-span of bearing depends primarily on sealing.The task one of sealing is to prevent that the lubricating grease in the bearing from leaking, the 2nd, and the mud that stops bit exterior to have corrosivity and abrasiveness is invaded bearing.In a single day sealing lost efficacy, and bearing will be worn soon, thereby caused drill bit to lose efficacy.
At present, the sealing of rock bit employing mainly contains two kinds of forms: rubber seal and mechanical seal.
As, what patent US 5524718,5655611 adopted is a rubber o-ring sealing, and what US 3765495, US 4037673 adopted is a regular rubber ring sealing, and its advantage is that manufacturing is simple, shortcoming is that sealing life is short, does not mate with the life-span of other member of drill bit.
What patent CN 201080787Y, US 6033117, US 6254275 B1 adopted is two rubber seal, their advantage be than single rubber seal of routine Duoed a resealing, prolonged sealing life, still, complex structure, manufacture difficulty is large.
The sealing of another form is mechanical seal.Such as patent US 4516641, US 4666001, US4923020, employing by two rubber energy supply sealing rings and two mechanical seals that metallic packing ring forms.Its advantage is that movable sealing is born by metallic sealing section, has prolonged the life-span of sealing, and shortcoming is that manufacture difficulty is large.
When adopting metal spring accumulation of energy circle as static sealing ring, patent CN 101182756A provides sealing load for mechanical seal.Its shortcoming is identical with the conventional mechanical sealing, and manufacture difficulty is larger.
Above-mentioned sealing system all requires the pressure in the bearing arrangement to be in the state of balance, to avoid potted component to be extruded losing efficacy or break-off appears in sealing surface.
The utility model content
The utility model is for the deficiency in the above-mentioned sealing of rock bit, and the rock bit spring energy-storage bearing that a kind of abrasion resistance is fabulous, friction factor is extremely low Double seal ring is provided.
The technical solution of the utility model is: comprise that teeth palm bearing and gear wheel endoporus, two spring energy-storage sealing rings and seal groove form, its difference be described two back-to-back the spring energy-storage sealing ring be installed in the seal groove, consist of spring energy-storage bearing Double seal ring.
Press such scheme, described spring energy-storage sealing ring comprises spring inner ring, can, middle filler; The cross sectional shape of described spring inner ring is U-shaped, V-arrangement, zero shape or ellipse, is formed by strip or round wire coiling; Described spring inner ring is made by the stainless steel-like alloy; Described can comprises inward flange, outer seal lip, interior sealing lip; Described can is made by the plastic materials of macromolecule or supra polymer; Filler is made by soft, resistant to elevated temperatures silicon rubber in the middle of described.
A kind of rock bit spring energy-storage of the utility model bearing Double seal ring advantage compared with prior art: adopt the technology of in a bearing seal groove, two spring energy-storage sealing rings being installed back-to-back, rely on the mode that tension force is fabulous to abrasion resistance, plastic casing that friction factor is extremely low provides sealing force of spring inner ring, realize the rotatory sealing of bearing.Namely have the simple advantage of manufacturing, improved again bearing seal and adapted to high-revolving ability and the ability that adapts to the sealing system inside and outside differential pressure, prolonged the life-span of seal and the life-span of rock bit.
Description of drawings
Fig. 1 is a kind of exemplary block diagram of the present utility model.
Fig. 2 is the typical section schematic diagram of spring energy-storage sealing ring.
Fig. 3 is one of structural representation of spring inner ring.
Fig. 4 is the second spring energy-storage sealing ring typical section figure.
Fig. 5 is U-shaped spring inner ring structure schematic diagram.
Fig. 6 is the third spring energy-storage sealing ring typical section figure.
Fig. 7 is the 4th kind of spring energy-storage sealing ring typical section figure.
Fig. 8 rolls the zero shape spring that forms by round wire.
Fig. 9 rolls the zero shape spring that forms by the strip steel wire.
Figure 10 is the second exemplary block diagram of the present utility model.
Figure 11 is the third exemplary block diagram of the present invention.
Figure 12 is the 4th kind of exemplary block diagram of the present invention.
The specific embodiment
Fig. 1 is a kind of exemplary block diagram of the present utility model.Teeth palm bearing 1 cooperates with gear wheel endoporus 2, forms the bearing of rock bit.Root at bearing has seal groove 3, and exterior seal ring 4 and inner seal ring 5 are housed in the groove 3. Sealing ring 4 and 5 all is the spring energy-storage sealing ring in V-arrangement cross section, and the properity of two sealing rings is identical, and difference is installation direction.The opening 7 of exterior seal ring 4 is towards the outside direction of bearing, and the opening direction 6 of inner seal ring 5 is towards the internal direction of bearing.Two sealing rings are installed together back-to-back.
Fig. 2 is the schematic cross-section of V-arrangement spring energy-storage sealing ring.The spring energy-storage sealing ring is comprised of spring inner ring 8 and can 9.At shell 9 inward flange 10, outer seal lip 11, interior sealing lip 12 are arranged.Inward flange 10 is used for fixing spring inner ring 8.Spring inner ring 8 makes outer seal lip 11 contact with the inside and outside footpath sealing surface of seal groove respectively with interior sealing lip 12 for can 9 provides tension force, realizes the sealing between teeth palm bearing and the gear wheel endoporus.
When the grease pressure in the bearing arrangement raise, the inside and outside sealing lip of inner seal ring 5 more closely contacted with the sealing surface of seal groove, has strengthened the sealability of sealing system.
When the mud pressure outside the bearing arrangement raise, the inside and outside sealing lip of exterior seal ring 4 more closely contacted with the sealing surface of seal groove, has also strengthened the sealability of sealing system.
Can 9 is made by the Plastic material high temperature resistant, wear-resistant, that friction factor is low.Such as the polytetrafluoroethylene (PTFE) of macromolecule or supra polymer, and in polytetrafluoroethylene (PTFE), fill some and can bear the additive of sintering polytetrafluoroethylene temperature, such as glass fiber, metal, metallization oxide, graphite, molybdenum bisuphide, carbon fiber etc.And for example by plastic production cans such as polyether-ether-ketone, polyimides.Low-friction coefficient has improved sealing system and has adapted to high-revolving ability.
Fig. 3 is one of structural representation of spring inner ring.Spring inner ring among Fig. 3 is V-arrangement.The spring inner ring is made by other steel of sheet stainless steel-like.Such as stainless steels such as 1Cr17Ni7, NiMo16Cr15W, CoCr20Ni15Mo.
Fig. 4 is the second spring energy-storage sealing ring typical section figure.Be that with the main difference part of Fig. 2 the spring inner ring is the U-shaped structure.
Fig. 5 is U-shaped spring inner ring structure schematic diagram.Formed by butt welding after the stainless steel-like strip material coiling moulding.
Fig. 6 is the third spring energy-storage sealing ring typical section figure.Be that with the main difference part of Fig. 2 the spring inner ring is zero shape structure.
Fig. 7 is the 4th kind of spring energy-storage sealing ring typical section figure.Be that with the main difference part of Fig. 2 the spring inner ring is ellipsoidal structure.
Fig. 8 rolls the zero shape spring that forms by round wire, and two butt welding namely gets zero shape spring inner ring.
Fig. 9 rolls the zero shape spring that forms by the strip steel wire, and two butt welding namely gets zero shape spring inner ring.
Figure 10 is the second exemplary block diagram of the present utility model.Identical among teeth palm bearing 1 among the figure, gear wheel endoporus 2, seal groove 3, inner seal ring 5 and Fig. 1.Difference is, in the exterior seal ring 13 of inner seal ring 5 back-to-back installations, filler 14 is housed.Filler 14 is made by soft, resistant to elevated temperatures silicon rubber, is used for preventing that outside mud from entering the sealing ring internal cavities, affects the elasticity of spring inner ring.
Figure 11 is the third exemplary block diagram of the present invention.Two sealing rings 4 among the figure and 5, identical with among Fig. 1.The difference of this figure and Fig. 1 is, teeth palm bearing 15 has adopted the patented technology in " the eccentric wide bearing seal groove of rock bit ", and 17 of its pressure-bearing cylinder 18 and O-ring cylinders have the difference of off-centre and diameter." off-centre " of this patented technology and " difference of diameter ", guarantee that seal groove 16 is to wait width at circumferencial direction, thereby for sealing ring 4 and 5 provides a working environment in compressions such as circumferencial directions, reduce the design compression ratio of sealing ring, improved the life-span that sealing ring adapts to high-revolving ability and sealing.
Figure 12 is the 4th kind of exemplary block diagram of the present invention.Adopted " the eccentric wide bearing seal groove of rock bit " Patent technology teeth palm bearing 15, form the wide seal groove 16 of patented technologies with gear wheel endoporus 2.Inner seal ring 5 and exterior seal ring 13 back-to-back being installed in the seal groove 16.Filler 14 is housed in the exterior seal ring 13.
Claims (8)
1. rock bit spring energy-storage bearing Double seal ring, comprise that teeth palm bearing and gear wheel endoporus, two spring energy-storage sealing rings and seal groove form, it is characterized in that described two back-to-back the spring energy-storage sealing ring be installed in the seal groove, consist of spring energy-storage bearing Double seal ring.
2. rock bit spring energy-storage bearing Double seal ring according to claim 1 is characterized in that described spring energy-storage sealing ring comprises spring inner ring and can.
3. rock bit spring energy-storage bearing Double seal ring according to claim 1 is characterized in that described spring energy-storage sealing ring comprises spring inner ring, can, middle filler.
4. according to claim 2 or 3 described rock bit spring energy-storage bearing Double seal rings, the cross sectional shape that it is characterized in that described spring inner ring is U-shaped, V-arrangement, zero shape or ellipse, is formed by strip or round wire coiling.
5. rock bit spring energy-storage bearing Double seal ring according to claim 4 is characterized in that described spring inner ring made by the stainless steel-like alloy.
6. according to claim 2 or 3 described rock bit spring energy-storage bearing Double seal rings, it is characterized in that described can comprises inward flange, outer seal lip, interior sealing lip.
7. rock bit spring energy-storage bearing Double seal ring according to claim 6 is characterized in that described can is made by the plastic materials of macromolecule or supra polymer.
8. rock bit spring energy-storage bearing Double seal ring according to claim 3 is characterized in that described middle filler is made by soft, resistant to elevated temperatures silicon rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220133520 CN202832216U (en) | 2012-04-01 | 2012-04-01 | Spring energy storage bearing double seal ring of roller bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220133520 CN202832216U (en) | 2012-04-01 | 2012-04-01 | Spring energy storage bearing double seal ring of roller bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202832216U true CN202832216U (en) | 2013-03-27 |
Family
ID=47943948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220133520 Expired - Fee Related CN202832216U (en) | 2012-04-01 | 2012-04-01 | Spring energy storage bearing double seal ring of roller bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202832216U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720433A (en) * | 2012-04-01 | 2012-10-10 | 幸发芬 | Cone bit spring energy storage bearing double sealing rings |
| CN103195368A (en) * | 2013-04-16 | 2013-07-10 | 上海神开石油化工装备股份有限公司 | Cone bit double-elastic-piece sealing device |
-
2012
- 2012-04-01 CN CN 201220133520 patent/CN202832216U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720433A (en) * | 2012-04-01 | 2012-10-10 | 幸发芬 | Cone bit spring energy storage bearing double sealing rings |
| CN103195368A (en) * | 2013-04-16 | 2013-07-10 | 上海神开石油化工装备股份有限公司 | Cone bit double-elastic-piece sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Xing Fafen Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: Xing Fafen Document name: Notification of Termination of Patent Right |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20150401 |
|
| EXPY | Termination of patent right or utility model |