CN201714301U - Compound seal roller bit - Google Patents
Compound seal roller bit Download PDFInfo
- Publication number
- CN201714301U CN201714301U CN2010202532819U CN201020253281U CN201714301U CN 201714301 U CN201714301 U CN 201714301U CN 2010202532819 U CN2010202532819 U CN 2010202532819U CN 201020253281 U CN201020253281 U CN 201020253281U CN 201714301 U CN201714301 U CN 201714301U
- Authority
- CN
- China
- Prior art keywords
- seal
- rubber
- ring
- rubber seal
- roller
- Prior art date
- 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
Links
Images
Abstract
The utility model discloses a compound seal roller bit. The roller palm and the roller of the roller bit can be rotatablely matually matched through a roller palm shaft neck and a roller shaft hole, the opening of the roller shaft hole is provided with a seal slot, the seal slot is internally provided with a rubber seal ring, the rubber seal ring is internally embedded with a built-in wear-resisting ring, the seal slot is internally provided with a second metal ring and a second rubber ring, the second metal ring is fixed on the roller palm shaft neck through a thread or interference fit, the second metal ring presses the second rubber ring on the roller palm shaft neck, the contact surface of the outer side of the second metal ring and the rubber seal ring forms the sliding friction surface, the built-in wear-resisting ring is obliquely arranged at the middle position at one side of the sliding friction surface of the rubber seal ring, and for the rubber seal ring under the loosen state, the built-in wear-resisting ring is lightly protruded out of the rubber surface at one side of the sliding friction surface of the rubber seal ring. The utility model improves the seal effect of the roller bit bearing system and is beneficial to reduce the friction cost of the roller bit.
Description
Technical field
The utility model relates to geological prospecting and drilling tool technical field, especially relates to a kind of compound seal rock bit.
Background technology
Rock bit is to be widely used in oil drilling, the drilling tool in geological prospecting and engineering field.The applied environment of rock bit is quite complicated, and sliding bearing and rolling bearing all require the sealing system of suitable complex environment, because sealing system is to do relative motion, under the environment for use of mutual friction, so its application life is very short.At present, domestic and international widely used rock bit is divided into rubber seal and metallic seal dual mode, because drilling well need be at high rotating speed, and high the pressure of the drill, the operation down of HI high impact environment, so the sealing of bearing arrangement is very crucial.Now both at home and abroad in the drill bit that each big drilling tool manufacturing company produces, rubber seal is not suitable for high rotating speed drilling well, very fast inefficacy under high rotating speed, and metallic seal is fit to high rotating speed but complex manufacturing, the manufacturing cost height; Therefore, design and produce sealing effectiveness better and the hermetically-sealed construction of the lower rock bit of cost of manufacture be the emphasis that the technician pays close attention to always.
The utility model content
In view of this, the purpose of this utility model is to provide a kind of compound seal rock bit, improves the effect of cone bit bearing system sealing, and helps reducing the rock bit cost of manufacture.
For achieving the above object, the utility model is by the following technical solutions: this compound seal rock bit, comprise bit leg and gear wheel, bit leg, gear wheel rotatably cooperatively interacts by bit leg journel and gear wheel axis hole, gear wheel axis hole opening part is provided with seal groove, be provided with rubber seal in the described seal groove, also set a built-in wear-resisting ring in this rubber seal, also be provided with second quoit and second rubber ring in the described seal groove, second quoit is fixed in bit leg journel by screw thread or interference fit, second quoit is pressed in described second rubber ring on the bit leg journel, and the outside of second quoit and described rubber seal contact surface form described sliding friction surface; Described built-in wear-resisting ring is offset to the centre position of described rubber seal sliding friction surface one side; And for the rubber seal under relaxed state, built-in wear-resisting ring slightly protrudes in the rubber surface of rubber seal sliding friction surface one side.Further, described rubber seal cross sectional shape is square; Described built-in wear-resisting ring adopts quoit or polytetrafluoroethylene (PTFE) circle.
The beneficial effects of the utility model are: increased built-in wear-resisting ring in described rubber seal, the weakness of rubber seal maximum is afraid of fricting movement exactly, the heat that fricting movement produces makes the very fast inefficacy of rubber seal, after adding built-in wear-resisting ring, the area of rubber seal friction portion can reduce greatly on sliding friction surface; When built-in wear-resisting ring adopts quoit, this rubber seal has had both the advantage of rubber seal and metallic seal, before rubber seal is unassembled, wherein built-in wear-resisting ring is on the rubber plane of giving prominence to rubber seal near a side of sliding friction surface slightly, after rubber seal is seated like this, built-in wear-resisting ring is pressed into the body of rubber seal slightly, and the rubber phase of both sides is to outside bulging, so form rubber face, metal covering, three grades of reliable seal form of rubber face on sliding friction surface; Built-in wear-resisting ring can prolong life-span, the raising sealing effectiveness of rubber seal equally when adopting the polytetrafluoroethylene (PTFE) circle; Second quoit is by being threaded or the mode of interference fit is fixed on the bit leg journel rotation when avoiding sliding friction.
Other advantages of the present utility model, target and feature will be set forth to a certain extent in the following description, and to a certain extent, based on being conspicuous to those skilled in the art, perhaps can from practice of the present utility model, obtain instruction to investigating hereinafter.
Description of drawings
Fig. 1 is a structural representation of the present utility model; Fig. 2 is the partial enlarged drawing of seal groove of the present utility model position among Fig. 1.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further described.
In conjunction with illustrated in figures 1 and 2, rock bit of the present utility model comprises bit leg 7 and gear wheel 1, bit leg 7, gear wheel 1 rotatably cooperatively interact by bit leg journel and gear wheel axis hole, gear wheel axis hole opening part is provided with seal groove, containment member is set in the seal groove, described containment member comprises static seals and sliding seal, wherein, static seals is fixed in bit leg journel, sliding seal is arranged between the sidewall of static seals and seal groove, and sliding seal and static seals contact site form sliding friction surface; During concrete enforcement, described sliding seal is a rubber seal 4, and the cross sectional shape of rubber seal 4 is square, square or rectangular all can, also set a built-in metal circle 3 in this rubber seal 4; Described static seals comprises second quoit 5 and second rubber ring 6, second quoit 5 is " L " shape, on second quoit 5 screw thread 8 is set, be fixed on the axle journal of bit leg 7 by this screw thread 8, second quoit 5 is pressed in described second rubber ring 6 on the bit leg journel, the outside of second quoit 5 and described rubber seal 4 are in contact with one another, and its contact surface forms sliding friction surface 2; Described built-in metal circle 3 is offset to the centre position of sliding friction surface one side of described rubber seal 4; And for the rubber seal under relaxed state 4, built-in metal circle 3 slightly protrudes in the rubber surface of rubber seal sliding friction surface one side, is the rubber seal that is seated in the accompanying drawing.During enforcement, the surface of sliding friction surface one side of the antifriction metal (AFM) circle 3 and second quoit 5 needs to handle through mirror ultrafinish, through milled processed rear surface roughness Ra≤0.01um.Can play the better seal effect equally when clearly, the quoit in the present embodiment 3 changes the polytetrafluoroethylene (PTFE) circle into.
Explanation is at last, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, other modifications that those of ordinary skills make the technical solution of the utility model or be equal to replacement, only otherwise break away from the spirit and scope of technical solutions of the utility model, all should be encompassed in the middle of the claim scope of the present utility model.
Claims (2)
1. compound seal rock bit, comprise bit leg and gear wheel, bit leg, gear wheel rotatably cooperatively interacts by bit leg journel and gear wheel axis hole, gear wheel axis hole opening part is provided with seal groove, it is characterized in that: be provided with rubber seal in the described seal groove, also set a built-in wear-resisting ring in this rubber seal, also be provided with second quoit and second rubber ring in the described seal groove, second quoit is fixed in bit leg journel by screw thread or interference fit, second quoit is pressed in described second rubber ring on the bit leg journel, and the outside of second quoit and described rubber seal contact surface form described sliding friction surface; Described built-in wear-resisting ring is offset to the centre position of described rubber seal sliding friction surface one side; And for the rubber seal under relaxed state, built-in wear-resisting ring slightly protrudes in the rubber surface of rubber seal sliding friction surface one side.
2. compound seal rock bit according to claim 1 is characterized in that: described rubber seal cross sectional shape is square; Described built-in wear-resisting ring adopts quoit or polytetrafluoroethylene (PTFE) circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202532819U CN201714301U (en) | 2010-07-09 | 2010-07-09 | Compound seal roller bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202532819U CN201714301U (en) | 2010-07-09 | 2010-07-09 | Compound seal roller bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201714301U true CN201714301U (en) | 2011-01-19 |
Family
ID=43460300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202532819U Expired - Lifetime CN201714301U (en) | 2010-07-09 | 2010-07-09 | Compound seal roller bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201714301U (en) |
Cited By (3)
| 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 |
| CN102704850A (en) * | 2012-01-17 | 2012-10-03 | 苏州新锐工程工具有限公司 | Double-sealed structure for mining drill |
| EP2785949A4 (en) * | 2011-11-30 | 2015-11-04 | Halliburton Energy Services Inc | Drill bit with seal having spheres in a matrix seal material |
-
2010
- 2010-07-09 CN CN2010202532819U patent/CN201714301U/en not_active Expired - Lifetime
Cited By (3)
| 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 |
| EP2785949A4 (en) * | 2011-11-30 | 2015-11-04 | Halliburton Energy Services Inc | Drill bit with seal having spheres in a matrix seal material |
| CN102704850A (en) * | 2012-01-17 | 2012-10-03 | 苏州新锐工程工具有限公司 | Double-sealed structure for mining drill |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101881136A (en) | Compound seal roller bit | |
| CN201714301U (en) | Compound seal roller bit | |
| CN104948114B (en) | A kind of sealing ring with lubrication channel | |
| CN102287139A (en) | Cone bit metal floating-sealing device | |
| CN201391543Y (en) | Thread-type insert bearing | |
| CN204299461U (en) | Non-excavation pipe-laying drilling rig unit head floating installation | |
| CN201786262U (en) | Two-stage radial rubber seal roller bit | |
| CN201826754U (en) | Roller bit metal floating sealing device | |
| CN201747286U (en) | Ball abrasion-reducing torsion-decreasing joint | |
| CN202249191U (en) | Bearing lock | |
| CN201666126U (en) | Antifriction ball-bearing casing protecting device | |
| CN203515327U (en) | Double-sealing roller bit with sealing pressure adjusting device | |
| CN202690754U (en) | Shaft bush | |
| CN203783484U (en) | Pup joint used for reducing friction and twist of anti-eccentric drill string and provided with ceramic coating | |
| CN206072131U (en) | New deep groove ball bearing contact type sealing structure | |
| CN204299472U (en) | A kind of rock bit with toughness pottery mechanical seal | |
| CN204782776U (en) | Sealing washer with lubrication passage | |
| CN104315187A (en) | Ceramic ball core for ball valve | |
| CN204127376U (en) | A kind of ball valve ceramic ball core | |
| CN203717674U (en) | Standard contact sealing ring with shoulder pad and composite structure thereof | |
| CN201747275U (en) | Two-stage axial rubber seal roller bit | |
| CN103470188B (en) | Double containment rifler with seal pressure adjusting means | |
| CN202612631U (en) | Inserting structure combining rotary joint and transition ring | |
| CN103883264B (en) | The anti-bias abrasive drilling post of ceramic coating falls to rub to subtract turns round pipe nipple | |
| CN201786263U (en) | Roller bit adapted to high-speed and high-temperature drilling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110119 Effective date of abandoning: 20150121 |
|
| RGAV | Abandon patent right to avoid regrant |