CN207879263U - A kind of hydraulic structure of single-cone rotary drill bit - Google Patents
A kind of hydraulic structure of single-cone rotary drill bit Download PDFInfo
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- CN207879263U CN207879263U CN201820004491.0U CN201820004491U CN207879263U CN 207879263 U CN207879263 U CN 207879263U CN 201820004491 U CN201820004491 U CN 201820004491U CN 207879263 U CN207879263 U CN 207879263U
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- hydrophthalmia
- runner
- bit body
- drill bit
- plane
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Abstract
The utility model discloses a kind of hydraulic structures of single-cone rotary drill bit, are related to boring means technical field.The utility model includes bit body and gear wheel, the gear wheel that bit body is inlaid with cutting tooth by the axle journal of its lower end with outer surface is matched, the bit body inclined-plane opposite with gear wheel is equipped with the first hydrophthalmia runner and the second hydrophthalmia runner, and the diameter of the first hydrophthalmia runner is more than the diameter of the second hydrophthalmia runner；Inclined-plane side when the water outlet of first hydrophthalmia runner is rotated down positioned at cutting tooth, the side on the inclined-plane when water outlet of the second hydrophthalmia is rotated up positioned at cutting tooth, and the first hydrophthalmia runner center line is more than the angle of the second hydrophthalmia runner center line and bit body ymmetry center plane with the angle of bit body ymmetry center plane.The utility model solve single-cone rotary drill bit rinse and on return during can form mixed and disorderly vortex, the chip removal ability of drill bit is caused to reduce the problem of, have the advantages that sweep that ability is strong, drilling speed is fast, with long service life.
Description
Technical field
The utility model is related to drilling tool technical fields, more particularly to a kind of waterpower knot of single-cone rotary drill bit
Structure.
Background technology
Single-cone rotary drill bit is one kind in rock bit, is one of the main rock crushing tool used in drilling engineering, especially
It is to play an important role in the slimhole drilling of deep ＆ ultra-deep well.
Existing single-cone rotary drill bit is made of bit body and gear wheel, and bit body is equipped with hydraulic structure, and hydraulic structure is by boring
The hydrophthalmia runner that head opens up in vivo is constituted, for circulating and spraying cleaner for high-pressure drilling fluid, to be carried out timely to shaft bottom and gear wheel
Cleaning and cooling, while removing shaft bottom landwaste and being taken ground return face.The waterpower part of existing single-cone rotary drill bit is mostly upper and lower water
Eye flow passage structure, and the center line of upper and lower hydrophthalmia runner is respectively positioned in bit body ymmetry center plane, when rock bit works,
It due to the fluid intersection of two hydrophthalmias, interferes with each other, this not only makes part water impact energy impaired, but also has an effect on shaft bottom
Performance is swept, causes bottom rock to repeat broken, to influence the Drilling performance and efficiency of rock bit.In addition to this, existing
A kind of left and right hydrophthalmia of the both sides setting of opposite bit body ymmetry center plane is referred in technology, double hydrophthalmias isometrical at this time go out
In the middle separated time of two hydrophthalmias, and herein just in the underface of cone shell, this will make two for the cross flow intersection at the mouth of a river
Stock cross flow cutting carring, mutually converges immediately below gear wheel and hits into and backflow, the resistance of cone shell is backflowed and just received on this
Hinder, above backflow into mixed and disorderly vortex, above returns landwaste and be returned to shaft bottom and be crushed again, so cycle reduces drill bit chip removal ability,
Chip removal ability reduces the accumulation that can cause landwaste, to influence the drilling rate of drill bit；The landwaste returned in addition, can be to bit body
It constantly causes to impact, exacerbates the abrasion of bit body, the service life of drill bit reduces.
Utility model content
The purpose of this utility model is that：In order to solve single-cone rotary drill bit rinse and on return during can be formed it is mixed and disorderly
The problem of being vortexed, the chip removal ability of drill bit is caused to reduce, the utility model provides a kind of hydraulic structure of single-cone rotary drill bit.
The utility model specifically uses following technical scheme to achieve the goals above：
A kind of hydraulic structure of single-cone rotary drill bit, including bit body and gear wheel, bit body by the axle journal of its lower end with it is outer
Surface inserting has the gear wheel of cutting tooth matched, and the bit body inclined-plane opposite with gear wheel is equipped with the first hydrophthalmia runner and the second water
Eye runner, the diameter of the first hydrophthalmia runner are more than the diameter of the second hydrophthalmia runner, and the water outlet of the first hydrophthalmia runner is located at cutting
Inclined-plane side when tooth rotates down, the side on the inclined-plane when water outlet of the second hydrophthalmia is rotated up positioned at cutting tooth, and the
One hydrophthalmia runner center and the angle of bit body ymmetry center plane are less than the second hydrophthalmia runner center and bit body symmetrical centre
The angle of plane.
In the utility model preferred embodiment, the first hydrophthalmia runner center and the angle of bit body symmetrical centre are
10 °~40 °, the second hydrophthalmia runner center and the angle of bit body symmetrical centre are 15 °~45 °.
In the utility model preferred embodiment, third hydrophthalmia runner, third are offered in the axle journal of bit body lower part
The water outlet of hydrophthalmia runner is located at the end of the bottom of axle journal.
In the utility model preferred embodiment, the water outlet of the water outlet of the first hydrophthalmia runner, the second hydrophthalmia runner
At mouthful and the water outlet of third hydrophthalmia runner is respectively equipped with first jet, second nozzle and third nozzle.
In the utility model preferred embodiment, the bore of first jet is more than the bore of second nozzle, and the first spray
Side when mouth is rotated down positioned at cutting tooth, side when second nozzle is rotated up positioned at cutting tooth.
In the utility model preferred embodiment, first jet, second nozzle and third nozzle are the spray of rheology shape
Mouth or iso-variable velocity shape nozzle.
The beneficial effects of the utility model are as follows：A kind of hydraulic structure of single-cone rotary drill bit provided by the utility model is in work
When making, fluid is flowed out by asymmetric and different diameter the first hydrophthalmia runner water outlet and the second hydrophthalmia runner water outlet, shape
At small one and large one flow, the Xiang Huiqu of two bursts of cross flows can deviate the symmetrical centre of bit body and move to the second smaller water of bore
The side of eye, to make cross flow mutually hit formation on backflow the blocking for avoiding bit body to it, be convenient for the discharge of landwaste；The
The water outlet of inclined-plane side when the water outlet of one hydrophthalmia runner is rotated down positioned at cutting tooth, the second hydrophthalmia is located at cutting teeth directional
When the side on inclined-plane when upper rotation, liquid stream and upward tangent line flow field superposition in the same direction are above returned, cutting tooth is rotated up on landwaste
It returns and plays facilitation, enhance the chip removal ability of drill bit, also reduce loss caused by due to landwaste is impacted bit body, extend and bore
The service life of head.
Description of the drawings
It, below will be to required use in embodiment in order to illustrate more clearly of the technical solution of the use of the new type embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is a kind of structural schematic diagram of the hydraulic structure of single-cone rotary drill bit provided by the utility model；
Fig. 2 is a kind of sectional view of the hydraulic structure of single-cone rotary drill bit provided by the utility model；
Fig. 3 is the sectional view of rheology speed shape nozzle provided by the utility model；
Fig. 4 is the sectional view of iso-variable velocity shape nozzle provided by the utility model；
Reference numeral：1- bit bodys；2- gear wheels；11- sprues；13a- the first hydrophthalmia runners；13b- the second hydrophthalmia runners；
15- axle journals；130a- first jets；130b- second nozzles；150- third nozzles；3a- rheology speed shape nozzles；3b- iso-variable velocity shapes
Nozzle.
Specific implementation mode
It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here described in attached drawing and
The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.
Incorporated by reference to Fig. 1 and Fig. 2, the present embodiment provides a kind of hydraulic structures of single-cone rotary drill bit, including bit body 1 and gear wheel
2, the gear wheel 2 that bit body 1 is inlaid with cutting tooth by the axle journal 15 of its lower end with outer surface is matched, bit body 1 and 2 phase of gear wheel
To inclined-plane equipped with the first hydrophthalmia runner 13a and the second hydrophthalmia runner 13b, the first hydrophthalmia runner 13a diameter be more than second
Inclined-plane side when the water outlet of the diameter of hydrophthalmia runner 13b, the first hydrophthalmia runner 13a is rotated down positioned at cutting tooth, second
The side on the inclined-plane when water outlet of hydrophthalmia is rotated up positioned at cutting tooth, and the first hydrophthalmia centers runner 13a and bit body 1 are right
The angle for claiming the angle of central plane to be less than the second hydrophthalmia centers runner 13b and 1 ymmetry center plane of bit body.
Specifically, the first hydrophthalmia runner 13a is connected to the sprue of bit body 1 11 with the second hydrophthalmia runner 13b.Fluid
Sprue 11 is first passed through, the first hydrophthalmia runner 13a and the second hydrophthalmia runner 13b are entered back into, it is different by asymmetric and diameter
First hydrophthalmia runner 13a water outlets and the outflow of the second hydrophthalmia runner 13b water outlets, form small one and large one flow, two bursts of cross flows
Xiang Huiqu can deviate the symmetrical centre of bit body 1 and move to the side of the second smaller hydrophthalmia of bore, to make cross flow bump against
Hit to be formed on backflow the blocking for avoiding bit body 1 to it, be convenient for the discharge of landwaste；The water outlet of first hydrophthalmia runner 13a
Inclined-plane side when being rotated down positioned at cutting tooth, one of inclined-plane when the water outlet of the second hydrophthalmia is rotated up positioned at cutting tooth
When side, liquid stream and upward tangent line flow field superposition in the same direction are above returned, cutting tooth is rotated up plays facilitation to being returned on landwaste, enhancing
The chip removal ability of drill bit also reduces loss caused by due to landwaste is impacted bit body 1, extends the service life of drill bit.
Further, the first hydrophthalmia runner 13a center lines and the angle in 1 symmetrical centre face of bit body are 10 °~40 °, the
Two hydrophthalmia runner 13b center lines and the angle in 1 symmetrical centre face of bit body are 15 °~45 °.Specifically, the first hydrophthalmia runner 13a
Liquid of the liquid relative to the second hydrophthalmia runner 13b, pressure is higher, can be by high pressure by the aggregate chips and mud on gear wheel 2
Dirt is cleaned and is formed and backflowed, and smaller with the angle of 1 median plane of bit body, the contact area of liquid and gear wheel 2 is bigger,
To reach better flushing effect.It should be noted that the second hydrophthalmia runner 13b center lines and 1 symmetrical centre face of bit body
Angle be consistently greater than the angle of the first hydrophthalmia runner 13a center lines and 1 symmetrical centre face of bit body, advantageously reduce and backflow
With the collision of bit body 1, reach better chip removal effect.
Further, third hydrophthalmia runner, the water outlet of third hydrophthalmia runner are offered in the axle journal 15 of 1 lower part of bit body
End positioned at the bottom of axle journal 15.Third hydrophthalmia runner is connected to sprue 11, and third hydrophthalmia runner can coordinate the first hydrophthalmia
Runner 13a and the second hydrophthalmia runner 13b removes the aggregate chips of bottommost in drilling process, auxiliary drill bit broken rock and cooling tooth
Wheel 2.
In the utility model preferred embodiment, the water outlet of the first hydrophthalmia runner 13a, the second hydrophthalmia runner 13b
Water outlet and third hydrophthalmia runner water outlet be respectively equipped with first jet 130a, second nozzle 130b and third spray
Mouth 150.Liquid will produce jet stream under the action of certain pressure by nozzle ejection, and high-pressure jet can assist drill bit to be broken
Rock, to improve broken rock speed；The high-pressure jet being additionally formed can be cleaned and cooled down to gear wheel 2, and the use of drill bit is extended
Service life.Fig. 3 and Fig. 4 are specifically please referred to, first jet 130a, second nozzle 130b and third nozzle 150 are rheology shape
Nozzle or iso-variable velocity shape nozzle 3b.Stream texturing jet or iso-variable velocity shape nozzle 3b are high with discharge coefficient, jet diffusion is small, constant speed
The advantage of core length, the effect of injection are preferable.
Further, the bore of first jet 130a is more than the bore of second nozzle 130b, and first jet 130a is located at
Side when cutting tooth rotates down, side when second nozzle 130b is rotated up positioned at cutting tooth, principle is the same as the first water
The setting principle of eye runner 13a water outlets and the second hydrophthalmia runner 13b water outlets.
The above, the only preferred embodiment of the utility model, are not intended to limit the utility model, the utility model
Scope of patent protection be subject to claims, it is equivalent made by every specification and accompanying drawing content with the utility model
Structure change similarly should be included in the scope of protection of the utility model.
Claims (6)
1. a kind of hydraulic structure of single-cone rotary drill bit, which is characterized in that including bit body and gear wheel, the bit body passes through under it
The gear wheel that the axle journal at end is inlaid with cutting tooth with outer surface is matched, and the bit body inclined-plane opposite with gear wheel is equipped with first
Hydrophthalmia runner and the second hydrophthalmia runner, the diameter of the first hydrophthalmia runner are more than the diameter of the second hydrophthalmia runner；Described first
The water outlet of inclined-plane side when the water outlet of hydrophthalmia runner is rotated down positioned at cutting tooth, second hydrophthalmia is located at cutting tooth
The side on inclined-plane when being rotated up, and the angle of the first hydrophthalmia runner center line and bit body ymmetry center plane is more than
The angle of second hydrophthalmia runner center line and bit body ymmetry center plane.
2. a kind of hydraulic structure of single-cone rotary drill bit according to claim 1, which is characterized in that the first hydrophthalmia runner
The angle in center line and bit body symmetrical centre face is 15 °~45 °, during the second hydrophthalmia runner center line and bit body are symmetrical
The angle in heart face is 10 °~40 °.
3. a kind of hydraulic structure of single-cone rotary drill bit according to claim 1, which is characterized in that the bit body lower part
Third hydrophthalmia runner is offered in axle journal, the water outlet of the third hydrophthalmia runner is located at the end of the bottom of axle journal.
4. a kind of hydraulic structure of single-cone rotary drill bit according to claim 1, which is characterized in that the first hydrophthalmia runner
Water outlet, the water outlet of the second hydrophthalmia runner and the water outlet of third hydrophthalmia runner be respectively equipped with first jet,
Second nozzle and third nozzle.
5. a kind of hydraulic structure of single-cone rotary drill bit according to claim 4, which is characterized in that the mouth of the first jet
Diameter is more than the bore of second nozzle, and the side when first jet is rotated down positioned at cutting tooth, the second nozzle position
Side when cutting tooth is rotated up.
6. a kind of hydraulic structure of single-cone rotary drill bit according to claim 4, which is characterized in that the first jet,
Two nozzles and third nozzle are stream texturing jet or iso-variable velocity shape nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820004491.0U CN207879263U (en) | 2018-01-02 | 2018-01-02 | A kind of hydraulic structure of single-cone rotary drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820004491.0U CN207879263U (en) | 2018-01-02 | 2018-01-02 | A kind of hydraulic structure of single-cone rotary drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207879263U true CN207879263U (en) | 2018-09-18 |
Family
ID=63506392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820004491.0U Expired - Fee Related CN207879263U (en) | 2018-01-02 | 2018-01-02 | A kind of hydraulic structure of single-cone rotary drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207879263U (en) |
-
2018
- 2018-01-02 CN CN201820004491.0U patent/CN207879263U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180918 Termination date: 20200102 |