CN102828694A - Roller cone bit framework type lip bearing sealing structure - Google Patents
Roller cone bit framework type lip bearing sealing structure Download PDFInfo
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- CN102828694A CN102828694A CN2012103718486A CN201210371848A CN102828694A CN 102828694 A CN102828694 A CN 102828694A CN 2012103718486 A CN2012103718486 A CN 2012103718486A CN 201210371848 A CN201210371848 A CN 201210371848A CN 102828694 A CN102828694 A CN 102828694A
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Abstract
The invention discloses a roller cone bit framework type lip bearing sealing structure which is mounted on a roller cone bit bearing. The roller cone bit bearing comprises a palm bearing and a roller cone, wherein the roller cone is sheathed on the palm bearing for forming a bearing cavity; the roller cone bit framework type lip bearing sealing structure comprises a sealing groove and a sealing component, wherein the sealing groove is arranged at the bottom of the palm bearing, and the sealing component is arranged in the sealing groove; the sealing component comprises a framework, an adjusting ring and a lip sealing ring component, wherein a groove is formed on the framework; the adjusting ring is arranged in the groove of the framework; and the lip sealing ring component is arranged in the groove of the framework and positioned between the adjusting ring and the framework. The roller cone bit framework type lip bearing sealing structure disclosed by the invention has the advantages of simple structure and convenience in mounting, and can effectively improve the abrasion resistance and temperature resistance of the sealing component, and greatly prolong the effective service life of the sealing component of the roller cone bit; and furthermore, lip sealing rings with different structures and elasticity can be flexibly used according to different working conditions, and the effectiveness of sealing can be ensured.
Description
Technical field
The present invention relates to a kind of bearing sealing structure for rotary drill bit, be meant that specifically the skeleton lip profile shaft of a kind of rock bit holds hermetically-sealed construction, is 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.Whether the life-span of bearing then depends primarily on sealing performance good.One of function of hermetically-sealed construction 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.If in a single day hermetically-sealed construction lost efficacy, bearing will be worn soon, thereby causes drill bit to lose efficacy.
In the prior art, the hermetically-sealed construction that rock bit adopts mainly contains two kinds of forms: rubber sealing structure and mechanical seal structure.
Like disclosed bearing sealing structure for rotary drill bit among, patent US 5524718 and the US 5655611, employing be an O shape rubber seal, what then adopt among patent US 3765495 and the US 4037673 is a rubber rectangular ring.The advantage of this rubber sealing structure is to make simply, but shortcoming is that the hermetically-sealed construction life-span is short, does not match with application life of other member of rock bit.
A kind of in addition seal form is a mechanical seal structure.Like disclosed bearing sealing structure for rotary drill bit among patent US 4516641, US 4666001 and the US4923020, employing by two rubber seal and two mechanical seal structures that metallic packing ring is formed.Its advantage is that movable sealing is born by metallic sealing section, has prolonged the application life of hermetically-sealed construction, and shortcoming is that manufacture difficulty is big, and cost is high.
Summary of the invention
The purpose of this invention is to provide the skeleton lip profile shaft of a kind of rock bit and hold hermetically-sealed construction, simple in structure, be convenient to install; Can effectively improve the anti-wear performance and the heat resistance of black box, significantly promote the Acceptable life of the black box of rock bit; And can use different structure and flexible lip-type packing flexibly according to the different working conditions condition, guarantee the validity that seals.
For realizing above-mentioned purpose, the present invention provides the skeleton lip profile shaft of a kind of rock bit to hold hermetically-sealed construction, is installed on the cone bit bearing; This cone bit bearing comprises teeth palm bearing and gear wheel, and said gear wheel is socketed in and forms bearing bore on the teeth palm bearing; The skeleton lip profile shaft of this rock bit holds hermetically-sealed construction and comprises: seal groove, and it is arranged on the bottom of said teeth palm bearing; Black box: it is arranged in the said seal groove; Wherein, said black box comprises: skeleton, offer a groove on this skeleton; The adjustment circle, it is arranged in the groove of said skeleton; The lip packing coil assembly, it is arranged in the groove of said skeleton, and between said adjustment circle and skeleton.
Said skeleton adopts stainless steel insert.
In a preferred embodiment of the present invention, said lip packing coil assembly comprises: first lip-type packing, and it is arranged in the groove of said skeleton, and is positioned at the upside of said adjustment circle; This first lip-type packing have one be arcuation the first lip position; Second lip-type packing, it is arranged in the groove of said skeleton, and is positioned at the downside of said adjustment circle; This second lip-type packing have one be arcuation the second lip position.
First lip position of said first lip-type packing and the second lip position of said second lip-type packing oppositely are provided with, and simultaneously to the outside bending of groove.
First lip position of said first lip-type packing and the second lip position of said second lip-type packing are provided with in the same way, and the said first lip position bends to inside grooves, and the said second lip position is to the outside bending of groove.
Said black box also comprises first packing ring and second packing ring; Said first packing ring is arranged between first lip-type packing and the skeleton, and said second packing ring is arranged between second lip-type packing and the skeleton.
Said first lip-type packing and second lip-type packing are processed by the modified Teflon material, and described modified Teflon material is by graphite, or glass microballoon, or the molybdenum bisuphide material modification is processed.
Described first packing ring, second packing ring and adjustment circle are processed by resistant to elevated temperatures fluorubber material, are perhaps processed by the modified Teflon material; Described modified Teflon material is by graphite, or glass microballoon, or the molybdenum bisuphide material modification is processed.
In another preferred embodiment of the present invention, said lip packing coil assembly comprises first lip-type packing, and it is arranged in the groove of said skeleton, and is positioned at the upside of said adjustment circle; This first lip-type packing have one be arcuation the first lip position; This first lip position is to the outside bending of groove.
Said black box also comprises first packing ring and second packing ring; Said first packing ring is arranged between first lip-type packing and the skeleton, and said second packing ring is arranged between the downside and skeleton of adjustment circle.
Said first lip-type packing is processed by the modified Teflon material, and described modified Teflon material is by graphite, or glass microballoon, or the molybdenum bisuphide material modification is processed.
In another preferred embodiment of the present invention, said lip packing coil assembly comprises second lip-type packing, and it is arranged in the groove of said skeleton, and is positioned at the downside of said adjustment circle; This second lip-type packing have one be arcuation the second lip position; This second lip position is to the outside bending of groove.
Said black box also comprises first packing ring and second packing ring; Said first packing ring is arranged between the upside and skeleton of adjustment circle, and said second packing ring is arranged between second lip-type packing and the skeleton.
Said second lip-type packing is processed by the modified Teflon material, and described modified Teflon material is by graphite, or glass microballoon, or the molybdenum bisuphide material modification is processed.
Described first packing ring, second packing ring and adjustment circle are processed by resistant to elevated temperatures fluorubber material, are perhaps processed by the modified Teflon material; Described modified Teflon material is by graphite, or glass microballoon, or the molybdenum bisuphide material modification is processed.
The skeleton lip profile shaft of rock bit provided by the present invention holds hermetically-sealed construction; The anti-wear performance and the heat resistance of its black box effectively improve; Under high the pressure of the drill, high-revolving operating mode, can keep the good stable performance, the Acceptable life of the black box of rock bit is increased substantially.
The skeleton lip profile shaft of rock bit provided by the present invention holds hermetically-sealed construction; The lip position of the lip-type packing in its black box can be designed to single procheilon structure or lips structure according to the different working conditions condition; Make lip-type packing possess different elasticity; At different pressure conditions, keep fitting tightly between lip position and the teeth palm bearing, simultaneously again can be because of the excessive extra heat that produces that rubs.
The skeleton lip profile shaft of rock bit provided by the present invention holds hermetically-sealed construction, and is simple in structure, is convenient to install, and easy to operate, maintenance cost is lower.
Description of drawings
Fig. 1 holds the sketch map of hermetically-sealed construction for the skeleton lip profile shaft of rock bit among the present invention;
Fig. 2 is the structural representation of the embodiment one of the black box among the present invention;
Fig. 3 is the structural representation of the embodiment two of the black box among the present invention;
Fig. 4 is the structural representation of the embodiment three of the black box among the present invention;
Fig. 5 is the structural representation of the embodiment four of the black box among the present invention.
The specific embodiment
Below in conjunction with Fig. 1～Fig. 5, specify a preferred embodiment of the present invention.
As shown in Figure 1, the skeleton lip profile shaft of rock bit provided by the present invention holds hermetically-sealed construction, is installed on the cone bit bearing; This cone bit bearing comprises teeth palm bearing 1 and gear wheel 2, and said gear wheel 2 is socketed on the teeth palm bearing 1 and forms bearing bore; The skeleton lip profile shaft of this rock bit holds hermetically-sealed construction and comprises: seal groove 5, and it is arranged on the bottom of said teeth palm bearing 1; Black box 4: it is arranged in the said seal groove 5.
Said cone bit bearing also comprises steel ball 3 and plug pin 6, and said steel ball 3 is put into bearing bore via the plug pin hole, and the self-locking through steel ball 3 makes gear wheel 2 fixedly sleeved on teeth palm bearing 1; After steel ball 3 was placed into bearing bore, said plug pin 6 was fixedly connected with said teeth palm bearing 1 through welding.
As shown in Figure 2, in embodiments of the invention one, said black box 4 comprises: skeleton 7, offer a groove on this skeleton 7; Adjustment circle 10, it is arranged in the groove of said skeleton 7; First lip-type packing 8, it is arranged in the groove of said skeleton 7, and is positioned at the upside of said adjustment circle 10; Second lip-type packing 11, it is arranged in the groove of said skeleton 7, and is positioned at the downside of said adjustment circle 10.
Said first lip-type packing 8 have one be arcuation the first lip position 81; Said second lip-type packing 11 have one be arcuation the second lip position 111; The said first lip position 81 and the second lip position 111 oppositely are provided with and bend to the groove outside simultaneously.
Said first lip-type packing 8 and second lip-type packing 11 are processed by the modified Teflon material, and described modified Teflon material is by graphite, or glass microballoon, or material modification such as molybdenum bisuphide is processed.It can make the anti-wear performance of black box 4 and heat resistance effectively improve.Described lip-type packing can keep the good stable performance under high the pressure of the drill, high-revolving operating mode, the Acceptable life of the black box of rock bit is increased substantially.
Said black box 4 also comprises first packing ring 9 and second packing ring 12, and said first packing ring 9 is arranged between first lip-type packing 8 and the skeleton 7, and said second packing ring 12 is arranged between second lip-type packing 11 and the skeleton 7.
Described first packing ring 9, second packing ring 12 and adjustment circle 10 are processed by resistant to elevated temperatures fluorubber material; Perhaps process by the modified Teflon material; Described modified Teflon material is by graphite, or glass microballoon, or material modification such as molybdenum bisuphide is processed.
Said skeleton 7 adopts stainless steel insert.
The skeleton lip profile shaft of the rock bit that present embodiment one is provided holds hermetically-sealed construction, and when the grease pressure in the bearing raise, first lip-type packing 8 will contact with teeth palm bearing 1 more closely, thereby has strengthened the sealability of black box.
And when the outer mud pressure of bearing raise, second lip-type packing 11 will contact with teeth palm bearing 1 more closely, thereby has also strengthened the sealability of black box.
As shown in Figure 3; In embodiments of the invention two, similar basically described in the structure of said black box 4 and the foregoing description one, unique difference is; In the present embodiment two; The first lip position 81 of said first lip-type packing 8 is provided with the second lip position 111 of said second lip-type packing 11 in the same way, and the said first lip position 81 is to the inside grooves bending, and the said second lip position 111 bends to groove is outside.
The skeleton lip profile shaft of the rock bit that present embodiment two is provided holds hermetically-sealed construction; Mainly be applicable to the higher drilling condition of the outside long-term pressure of mud of bearing; First lip-type packing 8 and second lip-type packing, 11 two seals defence lines are set, and it is inner to be used to prevent that the outside mud of bearing from getting into bearing.
As shown in Figure 4; In embodiments of the invention three, similar basically described in the structure of said black box 4 and the foregoing description one, unique difference is; In the present embodiment three; Black box 4 only comprises first lip-type packing 8, and it is arranged in the groove of said skeleton 7, and is positioned at the upside of said adjustment circle 10; And the first lip position 81 of said first lip-type packing 8 is to the outside bending of groove.Said first packing ring 9 still is arranged between first lip-type packing 8 and the skeleton 7, and said second packing ring 12 then is arranged between the downside and skeleton 7 of adjustment circle 10.
The skeleton lip profile shaft of the rock bit that present embodiment three is provided holds hermetically-sealed construction, mainly is applicable to the grease pressure condition with higher in the bearing, utilizes the sealing effectiveness between first lip-type packing, 8 reinforcements and the teeth palm bearing 1.
As shown in Figure 5; In embodiments of the invention four, similar basically described in the structure of said black box 4 and the foregoing description one, unique difference is; In the present embodiment four; Black box 4 only comprises second lip-type packing 11, and it is arranged in the groove of said skeleton 7, and is positioned at the downside of said adjustment circle 10; And the second lip position 111 of said second lip-type packing 11 is to the outside bending of groove.Said second packing ring 12 still is arranged between second lip-type packing 11 and the skeleton 7, and said first packing ring 9 then is arranged between the upside and skeleton 7 of adjustment circle 10.
The skeleton lip profile shaft of the rock bit that present embodiment four is provided holds hermetically-sealed construction, mainly is applicable to the outside mud pressure condition with higher of bearing, utilizes the sealing effectiveness between second lip-type packing, 11 reinforcements and the teeth palm bearing 1.
In sum; Compared with prior art; The skeleton lip profile shaft of rock bit provided by the present invention holds hermetically-sealed construction; It has the following advantages and beneficial effect: 1, black box is processed by stainless steel insert, packing ring, adjustment circle with by the lip-type packing that the modified Teflon material is processed; The anti-wear performance and the heat resistance of black box are effectively improved, under high the pressure of the drill, high-revolving operating mode, can keep the good stable performance, the Acceptable life of the black box of rock bit is increased substantially.2, the lip position of lip-type packing can be designed to single procheilon structure or lips structure according to the different working conditions condition; Make lip-type packing possess different elasticity; At different pressure conditions; Keep fitting tightly between lip position and the teeth palm bearing, simultaneously again can be because of the excessive extra heat that produces that rubs.3, simple in structure, be convenient to install, easy to operate, maintenance cost is lower.
Although content of the present invention has been done detailed introduction through above-mentioned preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple modification of the present invention with to substitute all will be conspicuous.Therefore, protection scope of the present invention should be limited appended claim.
Claims (15)
1. the skeleton lip profile shaft of rock bit holds hermetically-sealed construction, is installed on the cone bit bearing; This cone bit bearing comprises teeth palm bearing (1) and gear wheel (2), and said gear wheel (2) is socketed in teeth palm bearing (1) and goes up the formation bearing bore; It is characterized in that the skeleton lip profile shaft of said rock bit holds hermetically-sealed construction and comprises:
Seal groove (5), it is arranged on the bottom of said teeth palm bearing (1);
Black box (4): it is arranged in the said seal groove (5);
Wherein, said black box (4) comprises:
Skeleton (7), this skeleton is offered a groove on (7);
Adjustment circle (10), it is arranged in the groove of said skeleton (7);
The lip packing coil assembly, it is arranged in the groove of said skeleton (7), and is positioned between said adjustment circle (10) and the skeleton (7).
2. the skeleton lip profile shaft of rock bit as claimed in claim 1 holds hermetically-sealed construction, it is characterized in that, said skeleton (7) adopts stainless steel insert.
3. the skeleton lip profile shaft of rock bit as claimed in claim 1 holds hermetically-sealed construction, it is characterized in that, said lip packing coil assembly comprises:
First lip-type packing (8), it is arranged in the groove of said skeleton (7), and is positioned at the upside of said adjustment circle (10); This first lip-type packing (8) have one be arcuation the first lip position (81);
Second lip-type packing (11), it is arranged in the groove of said skeleton (7), and is positioned at the downside of said adjustment circle (10); This second lip-type packing (11) have one be arcuation the second lip position (111).
4. the skeleton lip profile shaft of rock bit as claimed in claim 3 holds hermetically-sealed construction; It is characterized in that; First lip position (81) of said first lip-type packing (8) and the second lip position (111) of said second lip-type packing (11) are reverse to be provided with, and simultaneously to the outside bending of groove.
5. the skeleton lip profile shaft of rock bit as claimed in claim 3 holds hermetically-sealed construction; It is characterized in that; The first lip position (81) of said first lip-type packing (8) is provided with the second lip position (111) of said second lip-type packing (11) in the same way; And the said first lip position (81) is to the inside grooves bending, and the said second lip position (111) is to the outside bending of groove.
6. hold hermetically-sealed construction like claim 4 or the skeleton lip profile shaft of 5 described rock bit, it is characterized in that, said black box (4) also comprises first packing ring (9) and second packing ring (12);
Said first packing ring (9) is arranged between first lip-type packing (8) and the skeleton (7);
Said second packing ring (12) is arranged between second lip-type packing (11) and the skeleton (7).
7. the skeleton lip profile shaft of rock bit as claimed in claim 3 holds hermetically-sealed construction; It is characterized in that; Said first lip-type packing (8) and second lip-type packing (11) are processed by the modified Teflon material; Described modified Teflon material is by graphite, or glass microballoon, or the molybdenum bisuphide material modification is processed.
8. the skeleton lip profile shaft of rock bit as claimed in claim 6 holds hermetically-sealed construction; It is characterized in that; Described first packing ring (9), second packing ring (12) and adjustment circle (10) are processed by resistant to elevated temperatures fluorubber material, are perhaps processed by the modified Teflon material; Described modified Teflon material is by graphite, or glass microballoon, or the molybdenum bisuphide material modification is processed.
9. the skeleton lip profile shaft of rock bit as claimed in claim 1 holds hermetically-sealed construction; It is characterized in that; Said lip packing coil assembly comprises first lip-type packing (8), and it is arranged in the groove of said skeleton (7), and is positioned at the upside of said adjustment circle (10); This first lip-type packing (8) have one be arcuation the first lip position (81); This first lip position (81) is to the outside bending of groove.
10. the skeleton lip profile shaft of rock bit as claimed in claim 9 holds hermetically-sealed construction, it is characterized in that, said black box (4) also comprises first packing ring (9) and second packing ring (12);
Said first packing ring (9) is arranged between first lip-type packing (8) and the skeleton (7);
Said second packing ring (12) is arranged between the downside and skeleton (7) of adjustment circle (10).
11. the skeleton lip profile shaft of rock bit as claimed in claim 9 holds hermetically-sealed construction; It is characterized in that said first lip-type packing (8) is processed by the modified Teflon material, described modified Teflon material is by graphite; Or glass microballoon, or the molybdenum bisuphide material modification is processed.
12. the skeleton lip profile shaft of rock bit as claimed in claim 1 holds hermetically-sealed construction; It is characterized in that; Said lip packing coil assembly comprises second lip-type packing (11), and it is arranged in the groove of said skeleton (7), and is positioned at the downside of said adjustment circle (10); This second lip-type packing (11) have one be arcuation the second lip position (111); And this said second lip position (111) is to the outside bending of groove.
13. the skeleton lip profile shaft of rock bit as claimed in claim 12 holds hermetically-sealed construction, it is characterized in that, said black box (4) also comprises first packing ring (9) and second packing ring (12);
Said first packing ring (9) is arranged between the upside and skeleton (7) of adjustment circle (10);
Said second packing ring (12) is arranged between second lip-type packing (11) and the skeleton (7).
14. the skeleton lip profile shaft of rock bit as claimed in claim 12 holds hermetically-sealed construction; It is characterized in that; Said second lip-type packing (11) is processed by the modified Teflon material; Described modified Teflon material is by graphite, or glass microballoon, or the molybdenum bisuphide material modification is processed.
15. hold hermetically-sealed construction like claim 10 or the skeleton lip profile shaft of 13 described rock bit; It is characterized in that; Described first packing ring (9), second packing ring (12) and adjustment circle (10) are processed by resistant to elevated temperatures fluorubber material, are perhaps processed by the modified Teflon material; Described modified Teflon material is by graphite, or glass microballoon, or the molybdenum bisuphide material modification is processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103718486A CN102828694A (en) | 2012-09-29 | 2012-09-29 | Roller cone bit framework type lip bearing sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103718486A CN102828694A (en) | 2012-09-29 | 2012-09-29 | Roller cone bit framework type lip bearing sealing structure |
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| Publication Number | Publication Date |
|---|---|
| CN102828694A true CN102828694A (en) | 2012-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103718486A Pending CN102828694A (en) | 2012-09-29 | 2012-09-29 | Roller cone bit framework type lip bearing sealing structure |
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| Country | Link |
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| CN (1) | CN102828694A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111237464A (en) * | 2020-01-16 | 2020-06-05 | 中国科学院近代物理研究所 | Rotary dynamic sealing structure and rotary electrolytic polishing device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4253710A (en) * | 1979-10-09 | 1981-03-03 | Dresser Industries, Inc. | High temperature sealing system for a rotary rock bit |
| CN1298057A (en) * | 2000-12-13 | 2001-06-06 | 江汉石油钻头股份有限公司 | Bearing sealing structure for rotary drill bit |
| CN202249772U (en) * | 2011-06-20 | 2012-05-30 | 成都盛帮密封件股份有限公司 | Novel roller bit sealing structure |
| CN202882765U (en) * | 2012-09-29 | 2013-04-17 | 上海神开石油化工装备股份有限公司 | Skeleton type lip-shaped bearing seal structure for roller cutter bit |
-
2012
- 2012-09-29 CN CN2012103718486A patent/CN102828694A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4253710A (en) * | 1979-10-09 | 1981-03-03 | Dresser Industries, Inc. | High temperature sealing system for a rotary rock bit |
| CN1298057A (en) * | 2000-12-13 | 2001-06-06 | 江汉石油钻头股份有限公司 | Bearing sealing structure for rotary drill bit |
| CN202249772U (en) * | 2011-06-20 | 2012-05-30 | 成都盛帮密封件股份有限公司 | Novel roller bit sealing structure |
| CN202882765U (en) * | 2012-09-29 | 2013-04-17 | 上海神开石油化工装备股份有限公司 | Skeleton type lip-shaped bearing seal structure for roller cutter bit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111237464A (en) * | 2020-01-16 | 2020-06-05 | 中国科学院近代物理研究所 | Rotary dynamic sealing structure and rotary electrolytic polishing device |
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Application publication date: 20121219 |