CN207553967U - Multidirectional injection aeratic hidden hole hammer bit - Google Patents
Multidirectional injection aeratic hidden hole hammer bit Download PDFInfo
- Publication number
- CN207553967U CN207553967U CN201721562048.7U CN201721562048U CN207553967U CN 207553967 U CN207553967 U CN 207553967U CN 201721562048 U CN201721562048 U CN 201721562048U CN 207553967 U CN207553967 U CN 207553967U
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- CN
- China
- Prior art keywords
- ring cavity
- monostable
- fluidic
- nozzle
- bit body
- Prior art date
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Abstract
A kind of multidirectional injection aeratic hidden hole hammer bit, the utility model includes pressure head, the monostable fluidic of ring cavity, bit body and nozzle, the monostable fluidic of ring cavity is enclosed in bit body by pressure head, the access that fluidic nozzle monostable with ring cavity and the monostable fluidic control road of ring cavity communicate is offered inside pressure head respectively, the monostable fluidic of ring cavity is built in bit body, using the asymmetric design in single control road, shoulder length positioned at the monostable fluidic nozzle both sides of ring cavity is different, it is less than the length of other side shoulder close to the length of control road side shoulder, compressed air is enable to stablize attached wall side, control road is cyclic structure, the splitter of the monostable fluidic lower end of ring cavity is welded on bit body, oblique spraying nozzle and radial nozzles are connected respectively to two outlets of the monostable fluidic of ring cavity.The fluid of the utility model down-hole hammer drilling nozzle injection is good to the elimination effect of landwaste, improves brill efficiency.
Description
Technical field
The utility model is related to a kind of drilling tools, and in particular to a kind of multidirectional injecting type aeratic hidden hole hammer bit.
Background technology
In order to ensure that block stamp ballistic work is able to be transferred to shaft bottom, the pressure of aeratic hidden hole hammer bit inlet often it is relatively low with
Avoid fluid back pressure liquidate hammering blow movement adversely affect.Relatively low nozzle inlet pressure exists plus drill bit spline with place
Leakage so that the fluid of down-hole hammer drilling nozzle injection is poor to the elimination effect of landwaste, is suspended with greatly in hole when creeping into too fast
Landwaste is measured, the drilling accidents such as bit freezing, burying often occurs.On aqueous moist stratum, down-hole hammer drilling is also usually because of debris cone
Product leads to bit balling.The removing of landwaste needs two processes that suspend and migrate, and conventional tiltedly nozzle can preferably suspend landwaste,
But radial fluid speed is relatively low, is unfavorable for Cutting movement；Radial nozzles bottom hole cross flow rate is high, is conducive to Cutting movement, but open
Dynamic and suspension landwaste ability is weaker.
Invention content
The purpose of this utility model is a kind of multidirectional injection aeratic hidden hole hammer bit of design.The drill bit utilizes block stamp and drill bit
Between reciprocating impact, control compressed air in the monostable fluidic of ring cavity high frequency switch, bottom hole formed multiple directions height
Frequency concussion jet stream strength cleaning hole bottom had not only been avoided that porous shunting reduced fluid energy, but also be avoided that high back pressure to detritus not
Profit influences.
By solution, its technical problem adopts the technical scheme that the utility model：
The multidirectional injection aeratic hidden hole hammer bit of the utility model, including pressure head, the monostable fluidic of ring cavity, bit body with
And nozzle.Pressure head is used for the monostable fluidic of ring cavity being enclosed in bit body, is offered respectively inside pressure head and ring cavity is monostable penetrates
The access that fluid element nozzle and the monostable fluidic control road of ring cavity communicate；The monostable fluidic of ring cavity employs single control road
Asymmetric design, and the shoulder length positioned at the monostable fluidic nozzle both sides of ring cavity is different, close to control road side shoulder
Length is less than the length of other side shoulder, and compressed air is enable to stablize attached wall side；The control of the monostable fluidic of ring cavity
Road is cyclic structure, and the splitter positioned at lower end is fixed on bit body in a welding manner；Multiple oblique spray sprays are provided in bit body
Mouth and radial nozzles, two kinds of nozzles are respectively connected to two outlets of the monostable fluidic of ring cavity.
Block stamp lower face for hitting multidirectional injection aeratic hidden hole hammer bit offers diversion trench, is connected with header inlet
Logical, compressed air enters the monostable jet stream of ring cavity via block stamp lower face diversion trench, header inlet, the monostable fluidic nozzle of ring cavity
Inside element, before block stamp is collided with drill bit, by fluid of the compressed air that the monostable fluidic nozzle of ring cavity enters in control road
Attached wall sprays, volume takes cleaning hole bottom to the peripheral wall far from control road via the oblique spraying nozzle of bottom of drill bit under thrust
Landwaste；After block stamp and drill bit making contact, block stamp lower face will control road to block, and instantaneous negative pressure is formed in road controlling, and by
It is less than the length of other side shoulder in the length close to control road side shoulder, is entered by the monostable fluidic nozzle of ring cavity
Instantaneously switching and attached wall are to another side wall surface for compressed air inside fluidic, radially nozzle strength cleaning hole bottom.
The multidirectional oblique spraying nozzle of aeratic hidden hole hammer bit and the quantity of radial nozzles of spraying is multiple.
The beneficial effects of the utility model are：
The fluidic of ring cavity structure has larger fluid inflow-rate of water turbine area, ensure that drill bit inlet always in low
Pressure condition；Compressed air is returned on suspension landwaste and portable hole bed rock bits by the conventional tiltedly spray orifice spray-hole bottom of drill bit before shock；
Fluid is sprayed after shock and is instantaneously switched to radial nozzles, the effect of similar " strong aperture blowing " is generated in bottom hole, will be suspended in it is in hole,
The rock debris do not removed in time is further blown into outer annular space gap and migrates to earth's surface.By block stamp and bit hits moment,
It completes compressed air high frequency between the fluid channel that diameter is different, injection direction is different to cut, makes up oblique spraying nozzle and radial nozzles
Respective deficiency, being capable of landwaste in more efficient cleaning hole.Due to the unexpected increase of pressure after shock, block stamp backhaul response
Accelerate therewith, improve frequency of impact to a certain extent, improve drilling efficiency.
Description of the drawings
Fig. 1 is the multidirectional injection pneumatic down-hole hammer drill bit structure schematic diagram of the utility model；
Fig. 2 is the cross-sectional view at the utility model pressure head；
Fig. 3 is the cross-sectional view at the monostable fluidic of the utility model ring cavity.
In figure：Ith, pressure head, II, the monostable fluidic of ring cavity, III, bit body, 1, header inlet, 2, control road, 3, ring cavity
Monostable fluidic nozzle, 4, first shoulder, the 5, second shoulder, 6, oblique spraying nozzle, 7, radial nozzles, 8, splitter.
Specific embodiment
The utility model is described further with reference to the accompanying drawings and examples
Embodiment 1
As shown in Fig. 1, Fig. 2 and Fig. 3, multinomial injection down-hole hammer drilling described in the present embodiment mainly includes pressure head I, ring cavity
Monostable fluidic II and bit body III.Pressure head I uses 35CrMo materials, and inside is provided with fluidic II monostable with ring cavity and connects
Header inlet 1 and control road 2, fluidic II monostable with ring cavity by pin connect be placed in bit body III in, then with periphery
Bit body III be welded into an entirety；Since fluid media (medium) is gas and drill bit is direct circulation drill bit, without considering that erosion is asked
Topic, the monostable fluidic II of ring cavity use 3D printing high-strength aluminum alloy, it is ensured that the permanent use of drill bit.In bit body III
Two oblique spraying nozzles 6 and two radial nozzles 7 are had, are connected respectively to two outlets of the monostable fluidic II of ring cavity.
The diversion trench of conventional bit tail portion is set to block stamp lower face further to strengthen drill bit intensity.
During work, block stamp and drill bit collision before, into the monostable fluidic of ring cavity compressed air control road 2 sky
Attached wall is to the peripheral wall close to the second shoulder 5 under gas thrust, by the suspension of oblique 6 access aperture bottom of spraying nozzle and cleaning hole bottom
Landwaste；After block stamp and bit hits, the diversion trench of block stamp lower face due to 1 face of header inlet, still maintaining overcurrent always
Unobstructed, control road is then blocked by block stamp, and negative pressure is formed at control road, simultaneously because the length of the second shoulder 5 is more than First
The length of shoulder 4, the compressed air attached wall unstability moment of attached wall to peripheral wall switch to the wall surface close to first shoulder 4, enter
Radial nozzles flushing hole bottom generates the effect of similar " strong aperture blowing " in bottom hole, being suspended in rock slag in hole, not removing in time
Bits are further blown into outer annular space gap and migrate to earth's surface.Due to the unexpected increase of pressure after shock, block stamp backhaul response
Accelerate therewith, improve frequency of impact to a certain extent, improve drilling efficiency.
Claims (2)
1. multidirectional injection aeratic hidden hole hammer bit, it is characterised in that：Including pressure head, the monostable fluidic of ring cavity, bit body and
The monostable fluidic of ring cavity is enclosed in bit body by nozzle, pressure head, is offered respectively inside pressure head and the monostable fluidic of ring cavity
The access that nozzle and the monostable fluidic control road of ring cavity communicate, the monostable fluidic of ring cavity is built in bit body, using list
The asymmetric design in road is controlled, the shoulder length positioned at the monostable fluidic nozzle both sides of ring cavity is different, close to control road side
The length of shoulder is less than the length of other side shoulder, and compressed air is enable to stablize attached wall side, and control road is cyclic structure,
The splitter of the monostable fluidic lower end of ring cavity is welded on bit body, and it is monostable that oblique spraying nozzle and radial nozzles are connected respectively to ring cavity
Two outlets of fluidic.
2. multidirectional injection aeratic hidden hole hammer bit as described in claim 1, it is characterised in that：The oblique spraying nozzle and radially spray
The quantity of mouth is multiple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721562048.7U CN207553967U (en) | 2017-11-21 | 2017-11-21 | Multidirectional injection aeratic hidden hole hammer bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721562048.7U CN207553967U (en) | 2017-11-21 | 2017-11-21 | Multidirectional injection aeratic hidden hole hammer bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207553967U true CN207553967U (en) | 2018-06-29 |
Family
ID=62680673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721562048.7U Expired - Fee Related CN207553967U (en) | 2017-11-21 | 2017-11-21 | Multidirectional injection aeratic hidden hole hammer bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207553967U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107829689A (en) * | 2017-11-21 | 2018-03-23 | 中南大学 | Multidirectional injection aeratic hidden hole hammer bit |
| CN109723376A (en) * | 2019-02-02 | 2019-05-07 | 吉林大学 | A kind of compression-ignited positive interaction power hammer drilling tool and catalase method |
| CN110043207A (en) * | 2019-05-13 | 2019-07-23 | 河南理工大学 | A kind of underground is adjustable self-advancing type carbon dioxide jet drilling prosthetic device and method |
-
2017
- 2017-11-21 CN CN201721562048.7U patent/CN207553967U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107829689A (en) * | 2017-11-21 | 2018-03-23 | 中南大学 | Multidirectional injection aeratic hidden hole hammer bit |
| CN107829689B (en) * | 2017-11-21 | 2023-10-31 | 中南大学 | Multidirectional jet pneumatic down-the-hole hammer drill bit |
| CN109723376A (en) * | 2019-02-02 | 2019-05-07 | 吉林大学 | A kind of compression-ignited positive interaction power hammer drilling tool and catalase method |
| CN109723376B (en) * | 2019-02-02 | 2024-04-19 | 吉林大学 | Compression ignition type positive power hammer drilling tool and rock breaking method |
| CN110043207A (en) * | 2019-05-13 | 2019-07-23 | 河南理工大学 | A kind of underground is adjustable self-advancing type carbon dioxide jet drilling prosthetic device and method |
| CN110043207B (en) * | 2019-05-13 | 2024-04-05 | 河南理工大学 | Underground adjustable self-advancing carbon dioxide jet drilling repairing device and method |
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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 |
Granted publication date: 20180629 Termination date: 20211121 |
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| CF01 | Termination of patent right due to non-payment of annual fee |