CN209653972U - A kind of rock bit being able to achieve sealing non-tight conversion - Google Patents
A kind of rock bit being able to achieve sealing non-tight conversion Download PDFInfo
- Publication number
- CN209653972U CN209653972U CN201822233749.7U CN201822233749U CN209653972U CN 209653972 U CN209653972 U CN 209653972U CN 201822233749 U CN201822233749 U CN 201822233749U CN 209653972 U CN209653972 U CN 209653972U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- slide
- bit
- gear wheel
- 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.)
- Active
Links
Landscapes
- Earth Drilling (AREA)
- Percussive Tools And Related Accessories (AREA)
Abstract
The utility model discloses a kind of rock bit for being able to achieve sealing non-tight conversion, including bit leg and gear wheel, bit leg to be connected by axle journal with gear wheel, and gear wheel inner hole port is provided with bearing sealed ring, and bearing sealed ring matches to form bearing bore with axle journal；Valve chamber is provided on bit leg, valve chamber is connected by oilhole with bearing bore；Valve chamber is built-in with switching valve, and switching valve includes valve body, and valve body upper port is equipped with baffle, and baffle and valve body lower end offer through-hole；Valve body upper and lower end is interspersed several ventholes；Body cavity is equipped with can be under gas pressure to the slide valve of valve body lower end movement；Slide valve is connected and composed by upper end slide plate and lower end slide plate by connecting rod in I-shaped；When slide valve is located at inner cavity the top of valve body, several ventholes of valve body upper end are respectively positioned on above the lower end slide plate of slide valve.The utility model rock bit can realize the hermetically sealed of bearing bore during the work time, so that moisture and impurity be avoided to enter bearing bore.
Description
Technical field
The utility model belongs to Oil-Gas Well Engineering and mining technical field more particularly to one kind to be able to achieve sealing non-close
Seal the rock bit of conversion.
Background technique
Rock bit is a kind of most popular drilling bit, cutting tooth alternately contact shaft bottom, cutting tooth when work
It is small with shaft bottom contact area, it is higher than pressing, it is easy to wedging stratum；Its work edge total length is big, thus opposite reduce is worn.Rotary drill
Head can adapt to a variety of stratum from soft to hard.
Currently, needing to be lubricated the bearing of rock bit, protecting to improve the service life of mining cone bit
Good lubrication is held, then to avoid moisture and impurity from entering bearing cavity, causes the rotten of oil product.For avoid moisture and impurity into
Enter bearing cavity, there is a leakproofness mining cone bit, but its it is practical be Semi-seal structure rock bit.For environmental protection need and
The working environment for improving rig personnel, in mining, in order to dust-proof, habit is in boring procedure plus water dedusting.Moreover,
Underground water is frequently encountered in recovery process causes water hole.Exactly these states, water enter bearing cavity by oil fuel tube, cause to moisten
Lubricating oil is rotten, influences bearing lubrication, accelerates the abrasion and fever of bearing, causes the rapid failure of bearing sealed ring 8, reduces gear wheel
Drilling life of bit.It data show, the actual life in relative theory service life, rock bit reduces 30%.
Utility model content
The purpose of the utility model is to provide a kind of rock bit for being able to achieve sealing non-tight conversion, which can
Moisture and impurity is avoided to enter bearing cavity, to can further improve service life.
The utility model have the characteristics that and the utility model has the advantages that
A kind of rock bit being able to achieve sealing non-tight conversion, including bit leg (1) and gear wheel (2), the bit leg (1)
It is connected by axle journal (3) with the gear wheel (2), gear wheel (2) inner hole port is provided with bearing sealed ring (4), bearing sealed ring (4)
It matches to form bearing bore with axle journal (3)；
Valve chamber is provided on the bit leg (1), valve chamber is connected by oilhole (5) with bearing bore；
Valve chamber is built-in with switching valve, and the switching valve includes valve body (6), and valve body (6) upper port is equipped with baffle (7), baffle
(7) and valve body (6) lower end offers through-hole；Valve body (6) upper and lower end is interspersed several ventholes (10)；
Valve body (6) inner cavity be equipped with can the slide valve (8) mobile to valve body (6) lower end under gas pressure, baffle (7) is used to pair
Slide valve (8) is limited；
The slide valve (8) passes through connecting rod (8c) connection structure in I-shaped, by upper end slide plate (8a) and lower end slide plate (8b)
At；When slide valve (8) is located at inner cavity the top of valve body (6), several ventholes (10) of valve body (6) upper end are respectively positioned on cunning
Above the lower end slide plate (8b) of valve (8).
Further, groove is enclosed in valve body (6) the lower end outer wall setting one, sets valve seals (11) in groove.
Further, groove is enclosed in lower end slide plate (8b) the outer wall setting one of the slide valve (8), and slide valve sealing is set in the groove
It encloses (12).
The utility model is had the following advantages and beneficial effects:
The utility model devises a kind of switching valve for rock bit, which can be in the rock bit course of work
It is middle to realize the hermetically sealed of bearing bore, to avoid moisture and impurity from entering bearing bore, to can further improve rock bit
Service life.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of rock bit under whole sealing status in embodiment；
Fig. 2 is the structural schematic diagram of rock bit under semitight state in embodiment；
Fig. 3 is the structural schematic diagram of rock bit under non-tight state in embodiment；
Fig. 4 is the structural schematic diagram of valve body in embodiment；
Fig. 5 is the A-A section left view of valve body shown in Fig. 4；
Fig. 6 is the B-B section left view of valve body shown in Fig. 4；
Fig. 7 is the structural schematic diagram of slide valve in embodiment；
Fig. 8 is the top view of slide valve shown in Fig. 7；
Fig. 9 is the structural schematic diagram of baffle in embodiment.
In figure: 1- bit leg, 2- gear wheel, 3- axle journal, 4- bearing sealed ring, 5- oilhole, 6- valve body, 7- baffle, 8- slide valve,
The upper end 8a- slide plate, the lower end 8b- slide plate, 8c- connecting rod, 9a- first through hole, the second through-hole of 9b-, 10- venthole, 11- valve body
Sealing ring, 12- slide valve sealing ring.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
Embodiment
Referring to Fig. 1-3, rock bit includes bit leg 1 and gear wheel 2, and bit leg 1 is connected by axle journal 3 with gear wheel 2, in gear wheel 2
Hole port is provided with bearing sealed ring 4, and bearing sealed ring 4 matches to form bearing bore with axle journal 3.It is provided on the bit leg 1
Valve chamber, valve chamber are connected by oilhole 5 with bearing bore.Switching valve is provided in valve chamber.The switching valve includes valve body 6, on valve body 6
Port is equipped with baffle 7, and 6 inner cavity of valve body is equipped with the slide valve 8 that can be slided along inner cavity, and baffle 7 is used to limit slide valve 8.Baffle 7
And 6 lower end of valve body offers through-hole, is denoted as first through hole 9a, the second through-hole 9b respectively, i.e., 6 inner cavity of valve body also with bearing bore
Conducting.The structural schematic diagram of baffle 7 is as shown in Figure 9.
Referring to fig. 4, it show the structural schematic diagram of valve body, wherein Fig. 5 is the A-A section left view of valve body shown in Fig. 4,
Fig. 6 is the B-B section right view of valve body shown in Fig. 4.6 upper and lower end of valve body is interspersed several ventholes 10.Valve
Groove is enclosed in 6 lower end outer wall of body setting one, sets valve seals 11 in groove.
Referring to Fig. 7, it show the structural schematic diagram of slide valve 8, wherein Fig. 8 is the top view of Fig. 7.The slide valve 8 is in I-shaped
Type, lower end slide plate 8b outer wall are provided with a circle groove, set slide valve sealing ring 12 in the groove.
The switching valve can realize the conversion of rock bit sealing state to non-tight state, working principle are as follows:
When rock bit is just started to work, slide valve 8 is located at the inner cavity of valve body 6 topmost, and 6 upper end of valve body is several at this time
Venthole 10 is corresponding with 8 position of slide valve, and specifically, the lower end that several ventholes 10 of 6 upper end of valve body are respectively positioned on slide valve 8 is sliding
Above plate 8a.At this time full of oil, slide valve sealing ring 12 and bearing seal in the body cavity of bearing bore, valve chamber and slide valve lower end
Circle 4 separates bearing bore and the external world, forms all-sealed structure, and as shown in Figure 1, rock bit is hermetically sealed drill bit at this time.
In the work operational process of rock bit, oil loss in bearing bore gradually forms vacuum chamber, at this point, drilling machine mentions
The compressed air for being 0.2MPa~0.4MPa for pressure, compressed air pass through valve body 6 after drill pipe bore, bit adapter inner hole
Several ventholes 10 of upper end enter 6 inner cavity of valve body, and act on slide valve 8.Under compressed air promotion, slide valve 8 is along valve
6 inner cavity of body slowly moves down.When slide valve 8 is moved to 6 bottom of valve body, the venthole 10 that is interspersed by 6 lower end of valve body
It communicates with the outside world, switching valve is in non-tight working condition at this time, but valve chamber and bearing bore are full of lubricating oil, and 2 inner hole of gear wheel
The bearing sealed ring 4 of port setting does not fail, and switching valve is converted into Semi-seal structure at this time, and rock bit is in semitight work
Make state, as shown in Figure 2.With the failure of oil loss and bearing sealed ring 4 in bearing bore, it is converted into non-tight knot at this time
Structure, bearing are in non-tight working condition, and rock bit is in non-tight working condition, sees Fig. 3.
Above-described embodiment is only one of various embodiments, for those skilled in the art, in above description base
Other various forms of variations or variation can also be made on plinth, and these belong to the utility model in essence spirit and derive
Other variations or variation still fall within scope of protection of the utility model.
Claims (3)
1. a kind of rock bit for being able to achieve sealing non-tight conversion, including bit leg (1) and gear wheel (2), the bit leg (1) pass through
Axle journal (3) is connected with the gear wheel (2), and gear wheel (2) inner hole port is provided with bearing sealed ring (4), bearing sealed ring (4) and axis
Neck (3) matches to form bearing bore；It is characterized in that:
Valve chamber is provided on the bit leg (1), valve chamber is connected by oilhole (5) with bearing bore；
Valve chamber is built-in with switching valve, and the switching valve includes valve body (6), and valve body (6) upper port is equipped with baffle (7), baffle (7) and
Valve body (6) lower end offers through-hole；Valve body (6) upper and lower end is interspersed several ventholes (10)；
Valve body (6) inner cavity is equipped with can be under gas pressure to the slide valve (8) of valve body (6) lower end movement, and baffle (7) is used to slide valve
(8) it is limited；The slide valve (8) passes through connecting rod (8c) company in I-shaped, by upper end slide plate (8a) and lower end slide plate (8b)
Connect composition；When slide valve (8) is located at inner cavity the top of valve body (6), several ventholes (10) of valve body (6) upper end are respectively positioned on
Above the lower end slide plate (8b) of slide valve (8).
2. it is able to achieve the rock bit of sealing non-tight conversion as described in claim 1, it is characterized in that:
Groove is enclosed in valve body (6) the lower end outer wall setting one, sets valve seals (11) in groove.
3. it is able to achieve the rock bit of sealing non-tight conversion as described in claim 1, it is characterized in that:
Groove is enclosed in lower end slide plate (8b) the outer wall setting one of the slide valve (8), sets slide valve sealing ring (12) in the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822233749.7U CN209653972U (en) | 2018-12-28 | 2018-12-28 | A kind of rock bit being able to achieve sealing non-tight conversion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822233749.7U CN209653972U (en) | 2018-12-28 | 2018-12-28 | A kind of rock bit being able to achieve sealing non-tight conversion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209653972U true CN209653972U (en) | 2019-11-19 |
Family
ID=68519343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822233749.7U Active CN209653972U (en) | 2018-12-28 | 2018-12-28 | A kind of rock bit being able to achieve sealing non-tight conversion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209653972U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109372436A (en) * | 2018-12-28 | 2019-02-22 | 湖北鸣利来冶金机械股份有限公司 | A kind of rock bit and conversion method being able to achieve sealing non-tight conversion |
-
2018
- 2018-12-28 CN CN201822233749.7U patent/CN209653972U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109372436A (en) * | 2018-12-28 | 2019-02-22 | 湖北鸣利来冶金机械股份有限公司 | A kind of rock bit and conversion method being able to achieve sealing non-tight conversion |
| WO2020134912A1 (en) * | 2018-12-28 | 2020-07-02 | 湖北鸣利来合金钻具股份有限公司 | Roller-cone bit capable of switching between sealed and unsealed state and switching method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207194873U (en) | A kind of high-strength shock absorber | |
| CN209653972U (en) | A kind of rock bit being able to achieve sealing non-tight conversion | |
| CN109372436A (en) | A kind of rock bit and conversion method being able to achieve sealing non-tight conversion | |
| CN204960827U (en) | Oil drilling is with airtight tool joint of little external diameter high strength | |
| CN110206495B (en) | Oil casing pipe thread-buckle connection air tightness detection packer | |
| CN201779318U (en) | Hydraulic balancing seal valve | |
| CN201496025U (en) | Hydraulic rotary well plugging device | |
| CN208347692U (en) | Rock bit pressure oil storage compensating device and its rock bit | |
| CN207673285U (en) | Sealing tricone bit with pressure oil storage compensating device | |
| CN206144512U (en) | High -temperature and high -pressure packer | |
| CN204703767U (en) | The compensation mining cone bit of bearing lubrication | |
| CN212296289U (en) | Polished rod lubricating arrangement for gas production wellhead assembly | |
| CN108678702A (en) | A kind of double sealing high pressure polished rod sealer | |
| CN207944888U (en) | A kind of setting at the top of gear wheel vacuumizes the engineering monolithic of oil injection structure | |
| CN205314951U (en) | Take temperature compensated equipment's high temperature resistant hydraulic pressure formula drilling jar | |
| CN102747962A (en) | High-sealing roller bit | |
| CN207004470U (en) | A kind of preventer of eccentric abrasion prevention formula | |
| CN2558752Y (en) | Tricone bit | |
| CN202441892U (en) | Sealing structure for underground hydraulic cylinder | |
| CN202673234U (en) | Drilling tool back-pressure valve with improved structure | |
| CN205314955U (en) | Hole sealing device for improving gas extraction concentration | |
| CN205955642U (en) | Foam screw rod well drilling underground device | |
| CN201474653U (en) | Oil well double ball-joint deflection regulating automatic blowout preventer | |
| CN101109270A (en) | Three teeth roller bit for mining | |
| CN207673284U (en) | Rock bit pressure oil storage compensation structure and its rock bit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |