CN2906030Y - Mechanical sealing device for small-sized roller bit which is no more than 6'' - Google Patents
Mechanical sealing device for small-sized roller bit which is no more than 6'' Download PDFInfo
- Publication number
- CN2906030Y CN2906030Y CN 200620026098 CN200620026098U CN2906030Y CN 2906030 Y CN2906030 Y CN 2906030Y CN 200620026098 CN200620026098 CN 200620026098 CN 200620026098 U CN200620026098 U CN 200620026098U CN 2906030 Y CN2906030 Y CN 2906030Y
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- China
- Prior art keywords
- ring
- shape circle
- hole
- gear wheel
- bit
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- 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 - Lifetime
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Abstract
Disclosed is a minitype seal device for roller bit engine with 6 and below, wherein the engine seal device is installed on the upper part of the roller cone hole. The seal device comprises an O-ring matching with the roller cone hole; the inside track of the O-ring is linked with the pore ring of the roller cone; a O-ring shaft is installed on the palm shaft neck; a palm collapsible is arranged on the outside track of the O-ring shaft, the lower surface of which and the upper surface of roller cone hole are round surface are attached to each other, thus forming a relatively rotary sealed end. The utility model has the advantages of reducing friction coefficient, flexible rotation, thus effectively increasing the period of usage and prolonging the service period of the roller bit. The roller bit of the sealed device works together with the downhole driving screw drill and meets the demand of high rotate speed reaching the level of complex drilling and improves the overall drilling efficiency.
Description
Technical field
The utility model belongs to mechanically-sealing apparatus, particularly relates to a kind of 6 " and following small-sized rock bit mechanically-sealing apparatus.
Background technology
Aspect oil drilling; 6 " be that 152.4mm and following slim-hole are widely used, traditional small-sized rock bit adopts rubber seal mostly, because rubber and intermetallic direct friction, the heat of generation is bigger, wearing and tearing are very fast, rock bit can only low-speed running, and service time is short, sealing initial failure, and then whole rock bit is scrapped too early, restricting the raising of drilling efficiency.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned defective, provides a kind of 6 " and following small-sized rock bit mechanically-sealing apparatus, it can prolong the application life of drill bit, improves comprehensive drilling efficiency.
The technical solution of the utility model is: a kind of 6 " and following small-sized rock bit mechanically-sealing apparatus; it comprises that bit leg and gear wheel, the bit leg axle collar, gear wheel orifice ring, axle O shape circle, hole O shape are enclosed; the orifice ring end face phase configuration of the bit leg axle collar and gear wheel; it is characterized in that: the upper end in the gear wheel hole is equipped with sealing device; the sealing device includes the hole O shape circle with gear wheel hole phase configuration, hole O shape circle inner ring suit gear wheel orifice ring; On the neck of bit leg axle, be installed on bit leg axle O shape circle, the suit bit leg axle collar outside axle O shape circle, the upper end of the lower surface of the bit leg axle collar and gear wheel orifice ring is the plane of going in ring and fits mutually, constitutes seal face in relative rotation.
Above-mentioned axle O shape circle, hole O shape circle are acrylonitrile-butadiene rubber or hydrogenated nitrile-butadiene rubber sealing ring.
Above-mentioned axle O shape circle, hole O shape ring cross-section are to circular, square or oval.
The above-mentioned axle collar is that hard materials such as alloy tool steel, carbide alloy, pottery are made.
Above-mentioned orifice ring is made with soft materials such as filled polytetrafluoroethylenes, or makes with hard materials such as alloy tool steels.
Above-mentioned orifice ring can be made off-centre or other geometries.
The utlity model has following advantage: 1, replace traditional rubber seal, coefficient of friction reduces, and rotates flexibly, can effectively extend working time, and then improve the application life of rock bit.2, mechanical seal adapts to higher rotation speed, uses the rock bit of sealing device to cooperate with the well dynamic helicoid hydraulic motor, realizes compound creeping into, and improves comprehensive drilling efficiency.
Description of drawings
Fig. 1 is the utility model cone bit palm and gear wheel assembly structure figure.
Fig. 2 is the I portion sectional structure chart of Fig. 1 of the present utility model.
Fig. 3 is axle, hole O shape circle and profile geometric shape figure thereof.
The specific embodiment
Embodiment: as shown in the figure, a kind of 6 " reach following small-sized rock bit mechanically-sealing apparatus; it comprises bit leg 5 and gear wheel 6; the bit leg axle collar 1; gear wheel orifice ring 2; axle O shape circle 3; hole O shape circle 4, upper end in gear wheel 6 holes is equipped with sealing device, the sealing device includes the hole O shape circle 4 with gear wheel 6 hole phase configuration, hole O shape circle 4 is strong acrylonitrile-butadiene rubber of elasticity or hydrogenated nitrile-butadiene rubber sealing ring, this rubber seal possesses oil resistant and resistance to elevated temperatures simultaneously, hole O shape is enclosed 4 inner ring suit gear wheel orifice rings 2, and the outside of the orifice ring 2 of gear wheel is provided with the cannelure with 4 configurations of hole O shape circle; An O shape circle 3 is installed on bit leg 5 axle journals, axle O shape circle 3 also is strong acrylonitrile-butadiene rubber of elasticity or hydrogenated nitrile-butadiene rubber sealing ring, this rubber seal possesses oil resistant and resistance to elevated temperatures simultaneously, and axle O shape circle 3, hole O shape are enclosed 4 cross sections and all be can be circle, square or oval; The suit bit leg axle collar 1 outside axle O shape circle 3, the bit leg axle collar 1 inboard is provided with the cannelure with 3 configurations of axle O shape circle, the bit leg axle collar 1 is an alloy tool steel, carbide alloy, hard materials such as pottery are made, soft materials such as gear wheel orifice ring 2 usefulness filled polytetrafluoroethylenes are made, or make with hard materials such as alloy tool steels, the upper end of the lower surface of the bit leg axle collar 1 and gear wheel orifice ring 2 is the plane of going in ring and fits mutually, constitute seal face in relative rotation, under the effect of external force, make O shape circle pressurized geometry deformation, make it produce bounce, substitute the spring that standard machinery seals, played the effect of static seal in the standard machinery sealing in the time of O shape circle pressurized with this bounce; Impeller-hub ring behind the axle O shape circle pressurized, hole O shape circle promotes orifice ring, the work plane of the axle collar and orifice ring is fitted tightly, form pair of friction components, these pair of friction components are by to making of orifice ring eccentric 8 or other geometries, can effectively form lubricating resin film in order to ensure between above-mentioned pair of friction components two work planes, make its work plane remain as thin as a wafer lubricating resin film, reduce coefficient of friction, prolong drilling life of bit, O shape circle is depressed into the limit, the locking ball of packing into, the relative position of locking gear wheel and bit leg, the rebound effect of O shape circle is attempted to restore to the original state, and the active force that is produced is added on the work plane of the axle collar and/or orifice ring, make pair of friction components remain certain moment scope, isolation bearing inner chamber and space outerpace, when gear wheel rotates, the axle collar and orifice ring relative motion, form movable sealing, prevent to soak in the excessive and outside drilling fluid of lubricant grease in the bearing bore.
Claims (6)
1, a kind of 6 " and following small-sized rock bit mechanically-sealing apparatus; it comprises bit leg and gear wheel, the bit leg axle collar, gear wheel orifice ring, axle O shape circle, hole O shape circle; the bit leg axle collar and gear wheel orifice ring end face phase configuration; it is characterized in that: mechanically-sealing apparatus is installed in the upper end in the gear wheel hole; include the hole O shape circle with gear wheel hole phase configuration, hole O shape circle inner ring suit gear wheel orifice ring; An O shape circle is installed on bit leg journel, the suit bit leg axle collar outside axle O shape circle, the upper end of the lower surface of the bit leg axle collar and gear wheel orifice ring is the plane of going in ring and fits mutually, constitutes seal face in relative rotation.
2, according to claim 1 a kind of 6 " reach following small-sized rock bit mechanically-sealing apparatus, it is characterized in that: above-mentioned axle O shape circle, hole O shape circle are acrylonitrile-butadiene rubber or hydrogenated nitrile-butadiene rubber sealing ring.
3, according to claim 1 a kind of 6 " reach following small-sized rock bit mechanically-sealing apparatus, it is characterized in that: above-mentioned axle O shape circle, hole O shape ring cross-section are to circular, square or oval.
4, according to claim 1 a kind of 6 " reach following small-sized rock bit mechanically-sealing apparatus, it is characterized in that: the above-mentioned axle collar is that hard materials such as alloy tool steel, carbide alloy, pottery are made.
5, according to claim 1 a kind of 6 " reach following small-sized rock bit mechanically-sealing apparatus, it is characterized in that: above-mentioned orifice ring is made with soft materials such as filled polytetrafluoroethylenes, or makes with hard materials such as alloy tool steels.
6, according to claim 1 a kind of 6 " reach following small-sized rock bit mechanically-sealing apparatus, it is characterized in that: above-mentioned orifice ring can be made off-centre or other geometries.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620026098 CN2906030Y (en) | 2006-05-22 | 2006-05-22 | Mechanical sealing device for small-sized roller bit which is no more than 6'' |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620026098 CN2906030Y (en) | 2006-05-22 | 2006-05-22 | Mechanical sealing device for small-sized roller bit which is no more than 6'' |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2906030Y true CN2906030Y (en) | 2007-05-30 |
Family
ID=38114664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620026098 Expired - Lifetime CN2906030Y (en) | 2006-05-22 | 2006-05-22 | Mechanical sealing device for small-sized roller bit which is no more than 6'' |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2906030Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101881136A (en) * | 2010-07-09 | 2010-11-10 | 天津立林钻头有限公司 | Compound seal roller bit |
| CN104650512A (en) * | 2014-11-28 | 2015-05-27 | 浙江歌瑞新材料有限公司 | Positive displacement motor (PDM) drill stator manufactured by PTFE and PFA blend and fluorine-containing material applying PDM drill stator |
| CN105545210A (en) * | 2016-01-12 | 2016-05-04 | 西南石油大学 | Double-row dovetail composite seal structure with roller bit inlaid with O-type rubber rings |
| CN110359850A (en) * | 2018-04-03 | 2019-10-22 | 西南石油大学 | Rock bit novel sealing structure |
-
2006
- 2006-05-22 CN CN 200620026098 patent/CN2906030Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101881136A (en) * | 2010-07-09 | 2010-11-10 | 天津立林钻头有限公司 | Compound seal roller bit |
| CN104650512A (en) * | 2014-11-28 | 2015-05-27 | 浙江歌瑞新材料有限公司 | Positive displacement motor (PDM) drill stator manufactured by PTFE and PFA blend and fluorine-containing material applying PDM drill stator |
| CN104650512B (en) * | 2014-11-28 | 2018-01-09 | 浙江歌瑞新材料有限公司 | A kind of screw drilling tool stator made using PTFE and PFA blends and the fluorine material applied to the stator |
| CN105545210A (en) * | 2016-01-12 | 2016-05-04 | 西南石油大学 | Double-row dovetail composite seal structure with roller bit inlaid with O-type rubber rings |
| CN105545210B (en) * | 2016-01-12 | 2018-01-30 | 西南石油大学 | A kind of rock bit inlays the double dovetail compound sealing structure of O-shaped rubber ring |
| CN110359850A (en) * | 2018-04-03 | 2019-10-22 | 西南石油大学 | Rock bit novel sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070530 |
|
| EXPY | Termination of patent right or utility model |