CN204782776U - Sealing washer with lubrication passage - Google Patents
Sealing washer with lubrication passage Download PDFInfo
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- CN204782776U CN204782776U CN201520532734.4U CN201520532734U CN204782776U CN 204782776 U CN204782776 U CN 204782776U CN 201520532734 U CN201520532734 U CN 201520532734U CN 204782776 U CN204782776 U CN 204782776U
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- circle body
- sealing ring
- groove
- sealing
- annular
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Abstract
The utility model relates to an including sealed circle body, the rotary cross -section of sealed circle body is the rectangle, its characterized in that the inner peripheral surface of sealed circle body be provided with annular oil groove, the up end of sealed circle body be provided with the terminal surface annular, offered radial inclined hole between annular oil groove and terminal surface annular for the annular oil groove is linked together with the terminal surface annular groove. The utility model discloses beneficial effect lies in: 1, it can the reinforce to adapt to high rotational speed. The sealing washer has sufficient lubricating grease with the movive seal district of bit leg axle journal contact, is in lubricated state, can reduce sealing washer frictional force, adapts to high rotational speed. 2, seal life is long under high rotational speed operating mode. Owing to have lubrication passage to supply lubricating grease, have sufficient lubricating grease all the time in sealed district to reduce the sealing washer and generate heat and wear and tear, be favorable to improving seal life. 3, adaptation large deflection well drilling operating mode. The metal seal drill bit of relative end face seal ring can better adapt to if the large deflection well drilling operating mode of direction well drilling improves bit life.
Description
Technical field
The utility model relates to the bearing seal structure of a kind of oil, geological drilling rock bit, and be specifically related to a kind of sealing ring with lubrication channel, sealing circle also can be used for the bearing seal of other similar mechanical device.
Background technology
Rock bit is a kind of rock crushing tool, is mainly used in the fields such as oil, gas drilling and mining drilling well.Along with the development of drilling technology, it is more and more extensive that drill bit coordinates mud motor to use, and is characterized in that drill speed is higher, drill bit in directional well and steerable drilling because large lateral force causes bearing seal to perturb greatly.Existing metal sealing drill bit adapts to high rotating speed, but belongs to end face seal due to metal sealing, and may wear to metal sealing to a certain degree and easily lost efficacy perturbing large drilling condition lower bearing, reliability is not high.Existing rubber seal belongs to the drilling condition that radial seal can adapt to large deflection, but because frictional force is large, calorific value is large, can not adapt to run up, and seals easy initial failure.
High-revolving situation is not suitable with for solving rubber seal, Chinese patent CN103670282 proposes a kind of rock bit special sealing ring, its technical scheme taked is provided with oil storage tank at rubber matrix internal diameter, and object ensures sealing area good lubrication, thus raising seals application life.Chinese patent CN102046913A proposes and constructs dimpled surface at journal packing position by shot-peening, and dimpled surface can oil storage thus reduce seal friction and heat-dissipating.
Above-mentioned two patents improve the lubrication state of sealing ring to a certain extent, but all there is the few shortcoming without subsequent compensation of oil reserve in this two schemes, drill bit sealing is outer is mostly severe mud medium, oil storage is easily consumed with perturbing in the lower short period at bit bearing sealing play, seal is just without lubrication, and seal is easy premature failure at high speed.
Summary of the invention
Technical problem to be solved in the utility model is the deficiency overcoming the existence of above-mentioned prior art, provides a kind of rock bit sealing ring with lubrication channel, to keep the good lubrication in sealing ring movable sealing region, improves application life and the reliability of sealing ring.
The technical scheme that the problem that the utility model is the above-mentioned proposition of solution adopts is: comprise sealing circle body, the revolution section of sealing circle body is rectangular, it is characterized in that the inner peripheral surface of described sealing circle body is provided with annular oil groove, the upper surface of described sealing circle body is provided with end face annular groove, between annular oil groove and end face annular groove, offer radial inclined hole, annular oil groove is connected with end face ring connected in star.
By such scheme, described annular oil groove is arranged on the middle part of sealing circle body inner peripheral surface, and described end face annular groove is arranged on the middle part of sealing circle body upper surface.
By such scheme, the upper surface of described sealing circle body is provided with the radial groove be connected with end face annular groove.
By such scheme, the lower surface of described sealing circle body is provided with lower surface annular groove, and lower surface annular groove is arranged on the middle part of sealing circle body lower surface.
By such scheme, the lower surface of described sealing circle body is provided with the radial groove be connected with lower surface annular groove.
By such scheme, the outer peripheral face of described sealing circle body is provided with outer annular groove, and described outer annular groove is positioned at sealing ring external week middle part.
By such scheme, described radial inclined hole circumferentially arranges 1 ~ 20.
By such scheme, described sealing ring is made up of rubber or flexible elastic force plastics, or other wear-resistant flexible elasticity material is made.
Installed in the seal groove of roller axle bearing bore outer end when the utility model uses, the inner peripheral surface of sealing ring and bit leg journel phase configuration, roller axle bearing bore and teeth palm bearing form sliding bearing structure, and sealing ring inner peripheral surface and bit leg journel form the movable sealing region of sealing ring.During work, the annular oil groove of sealing ring inner peripheral surface contains certain lubricating grease, the lubricating grease in gear wheel bearing can be entered annular oil groove through end face ring connected in star simultaneously carry out subsequent compensation, to keep the good lubrication in sealing ring movable sealing region by radial inclined hole.
The utility model beneficial effect is: 1, adapt to high speed capability strong.There is sufficient lubricant grease in the movable sealing district that sealing ring contacts with bit leg journel, is in lubricating status, can reduces sealing ring frictional force, adapt to high rotating speed.2, long in the high speed conditions lower seal life-span.Owing to there being lubrication channel supplemental lubrication fat, there is sufficient lubricant grease all the time in seal area, thus reduce sealing ring heating and wearing and tearing, be conducive to improving sealing life.3, large deflection drilling condition is adapted to.The metal sealing drill bit of opposing end surface joint ring, better can adapt to the large deflection drilling condition as steerable drilling, improves bit life.
Accompanying drawing explanation
Fig. 1 is the part sectioned view of the utility model for rock bit.
Fig. 2 is the partial enlarged drawing of the utility model embodiment for cone bit bearing sealing position.
Fig. 3 is the axial section structure chart of the utility model embodiment.
Fig. 4 is the top view of the utility model embodiment.
Detailed description of the invention
Embodiment of the present utility model is further illustrated below in conjunction with drawings and Examples.
An embodiment of the present utility model as shown in Figure 1, Figure 2 and Figure 3.Include gear wheel 3 and bit leg 1, gear wheel is socket-connected by dead eye and bit leg journel 2, forms cone bit bearing, steel ball 4 puts into bearing from plug pin hole, thereafter be welded and fixed by plug pin 6, axially remain on bit leg journel 2 by steel ball 4 by gear wheel 3, lubricating grease hole 5 provides lubricating grease to bit bearing.Roller axle bearing bore outer end place is provided with seal groove 8, is installed on sealing ring 9 at seal groove 8, and sealing ring 9 and bit leg journel 7 phase configuration form bearing dynamic sealing.The revolution section of sealing circle body is rectangular, annular oil groove 14 is provided with in the middle part of the inner peripheral surface of sealing circle body, end face annular groove 11 is provided with in the middle part of the upper surface of described sealing circle body, open between annular oil groove and end face annular groove and offer radial inclined hole 10 through sealing circle body, radial inclined hole can circumferentially arrange 2 ~ 6, annular oil groove is connected with end face ring connected in star, forms lubrication channel, the upper surface of sealing circle body is provided with the radial groove 16 be connected with end face annular groove.In addition, be provided with lower surface annular groove 13 and coupled logical radial groove 15 in the middle part of the lower surface of described sealing circle body, the external all Middle face of described sealing ring are provided with outer annular groove 12.Sealing circle body is made up of acrylonitrile-butadiene rubber, hydrogenated nitrile-butadiene rubber, fluorubber, polytetrafluoroethylene (PTFE) or aramid fiber, or is composited by above-mentioned multiple material.
During work, in bearing bore, lubricating grease adds to sealing ring annular oil groove 14 by radial groove 16, end face annular groove 11 and radial inclined hole 10, all the time there is sufficient lubricant grease in high speed conditions lower seal region, reduce sealing ring 9 and the frictional force and the wearing and tearing that seal axle journal 7.Sealing ring outer annular groove 12 can reduce sealing ring 9 owing to compressing the volumetric change causing sealing ring annular oil groove 14, ensures that sealing ring annular oil groove has sufficient space to store lubricant grease.Sealing ring lower surface annular groove 13, radial groove 15 communicate with extraneous drilling mud, sealing ring upper surface annular groove 11, radial groove 16 are communicated with bearing bore lubricating grease, bit bearing lubricating cavity is connected with pressure equaliser, and such sealing ring only bears pressure differential less inside and outside bearing bore in high-pressure well.
Claims (8)
1. one kind has the sealing ring of lubrication channel, comprise sealing circle body, the revolution section of sealing circle body is rectangular, it is characterized in that the inner peripheral surface of described sealing circle body is provided with annular oil groove, the upper surface of described sealing circle body is provided with end face annular groove, between annular oil groove and end face annular groove, offer radial inclined hole, annular oil groove is connected with end face ring connected in star.
2. the sealing ring with lubrication channel according to claim 1, it is characterized in that described annular oil groove is arranged on the middle part of sealing circle body inner peripheral surface, described end face annular groove is arranged on the middle part of sealing circle body upper surface.
3. the sealing ring with lubrication channel according to claim 1 and 2, is characterized in that the upper surface of described sealing circle body is provided with the radial groove be connected with end face annular groove.
4. the sealing ring with lubrication channel according to claim 1 and 2, is characterized in that the lower surface of described sealing circle body is provided with lower surface annular groove, and lower surface annular groove is arranged on the middle part of sealing circle body lower surface.
5. the sealing ring with lubrication channel according to claim 4, is characterized in that the lower surface of described sealing circle body is provided with the radial groove be connected with lower surface annular groove.
6. the sealing ring with lubrication channel according to claim 1 and 2, is characterized in that the outer peripheral face of described sealing circle body is provided with outer annular groove, and described outer annular groove is positioned at sealing ring external week middle part.
7. the sealing ring with lubrication channel according to claim 1 and 2, is characterized in that described radial inclined hole circumferentially arranges 1 ~ 20.
8. the sealing ring with lubrication channel according to claim 1 and 2, is characterized in that described sealing ring is made up of rubber or flexible elastic force plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520532734.4U CN204782776U (en) | 2015-07-22 | 2015-07-22 | Sealing washer with lubrication passage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520532734.4U CN204782776U (en) | 2015-07-22 | 2015-07-22 | Sealing washer with lubrication passage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204782776U true CN204782776U (en) | 2015-11-18 |
Family
ID=54522845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520532734.4U Expired - Fee Related CN204782776U (en) | 2015-07-22 | 2015-07-22 | Sealing washer with lubrication passage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204782776U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948114A (en) * | 2015-07-22 | 2015-09-30 | 江汉石油钻头股份有限公司 | Seal ring with lubricating channel |
-
2015
- 2015-07-22 CN CN201520532734.4U patent/CN204782776U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948114A (en) * | 2015-07-22 | 2015-09-30 | 江汉石油钻头股份有限公司 | Seal ring with lubricating channel |
| CN104948114B (en) * | 2015-07-22 | 2018-01-02 | 江汉石油钻头股份有限公司 | A kind of sealing ring with lubrication channel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 430223 Hubei city of Wuhan province science and Technology Park East Lake New Technology Development Zone, Road No. five Patentee after: SINOPEC OILFIELD EQUIPMENT CORPORATION Address before: 430223 Hubei city of Wuhan province science and Technology Park East Lake New Technology Development Zone, Road No. five Patentee before: Jianghan Petroleum Drilling Bit Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20190722 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |