CN206571429U - A kind of mining machinery mining drill bit - Google Patents
A kind of mining machinery mining drill bit Download PDFInfo
- Publication number
- CN206571429U CN206571429U CN201720231717.6U CN201720231717U CN206571429U CN 206571429 U CN206571429 U CN 206571429U CN 201720231717 U CN201720231717 U CN 201720231717U CN 206571429 U CN206571429 U CN 206571429U
- Authority
- CN
- China
- Prior art keywords
- pipe
- mining
- drill bit
- curved pipe
- mining machinery
- 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)
Abstract
The utility model is related to a kind of mining machinery mining drill bit, belongs to mining machinery field；Described mining machinery includes drill body, bottom pipe, curved pipe, heart pipe with mining drill bit, the utility model cooperatively forms annular nozzle structure using curved pipe and bottom ligament, curved pipe is coordinated to use, existing reverse circulation drill bit can largely be solved in cranny development, leakage stratum drilling, it is not thorough enough that reacting cycle is formed sometimes, and quite a few gas carries rock dust from outer annular space escape discharge earth's surface.And, the utility model is connected using bottom pipe, curved pipe and heart pipe and replaces single built-in pipe, it is not only easy to process, and reacting cycle deslagging effect is good, air quantity consumption is small, furthermore it is possible to avoid annular space miss and long term accumulation cause a large amount of landwaste, rock dust to be deposited in the outer czermak space between drilling tool and hole wall so as to cause, to carry brill difficult, it is to avoid burying, bit freezing, the generation for the drilling accident such as even there is drilling tool to fracture.
Description
Technical field
The utility model belongs to mining machinery field, specifically, is related to a kind of mining machinery mining drill bit.
Background technology
Miner's industry is the important foundation industry of relation economic life line of the country and energy security, particularly coal industry, although
China was adjusted to energy resource structure always in the last few years, cut down proportion of the coal in energy consumption.But, coal exists
Ratio in primary energy structure is still maintained at more than 60%, considerably long from now in the period of in, coal will be used as China's main body
The status of the energy will not shake.Because China Mine Geological complicated condition is changeable, coal production general technical level is relatively low, except
China Mine Geological complicated condition, exploitation difficulty is big, outside mining mechanization degree and the national gap of advanced producing coal are larger, exploitation
Technology and equipment level also lags far behind other advanced producing coal countries.In the prior art, air Reverse Circulation DTH Hammer Drilling Technique
Progressively obtained extensively in fields such as Exploration of solid mineral resources, hydrological well Drilling, oil and gas well drilling, engineering investigations
Application.
In the prior art, from the point of view of direct circulation Drilling Technology Practice, when drilling strata crack, fracture development, extremely crush
Or when having solution cavity, the gas sprayed from bottom spray orifice is largely missed among the crack of stratum, into the gas of bit central passage
It is greatly reduced.So as to which the uplift force for causing rock core or rock sample to be subject to during upper return is inadequate, easily occurs rock core blocking
Phenomenon, reacting cycle formation effect is poor, sometimes or even at all can not form reacting cycle, thus causes deslagging in drilling process
Difficulty, air quantity consumption is big, or even drilling can not be carried out.And the characteristics of air down-hole hammer reverse circulation drilling visits technology and advantage are based on,
By its popularization and application into mine drilling mining from now on, the difficulty that direct circulation can not be crept under some operating modes can be effectively solved
Topic, the technology and equipment to raising China mining rapid drilling is significant.Existing reverse circulation drill bit exists
When cranny development, leakage stratum drilling, it is not thorough enough that reacting cycle is formed sometimes, and quite a few gas carries rock dust from outer shroud
Sky, which is escaped, discharges earth's surface, that is, aperture occurs and return wind phenomenon.Annular space is missed and long term accumulation causes a large amount of landwaste, rock dust to be deposited in
Outer czermak space between drilling tool and hole wall puies forward brill difficulty so as to cause.If the now wet water-yielding stratum of wet, the rock dust of outer annular space meets water
On the drilling rod that can be bonded in, the generation of drilling accident such as burying, bit freezing are easily caused, even have drilling tool to fracture.
Therefore, it is badly in need of retrofiting to existing reverse circulation drill bit structure, innovative design goes out with strong pumping performance
New reverse circulation drill bit, to meet the boring work of complex condition.
The content of the invention
In order to overcome problem present in background technology, the utility model provides a kind of mining machinery mining drill bit,
Gas can be avoided to carry rock dust from outer annular space escape discharge earth's surface, prevent a large amount of landwaste, rock dust to be deposited between drilling tool and hole wall
Outer czermak space carry that brill is difficult so as to cause, moreover, the drilling accident such as do not easily cause burying, bit freezing, even there is drilling tool to fracture
Occur, and the utility model has good reacting cycle sediment outflow effect.
To reach above-mentioned purpose, the utility model is implemented by following technical scheme：
Described mining machinery includes drill body, bottom pipe, curved pipe, heart pipe with mining drill bit, wherein, described drill bit
The interior spray-hole and bottom spray orifice for offering and being connected respectively with air slot on air slot, side wall are offered on body, drill body
Intracavity bottom, which is provided with shoulder, shoulder, is welded with bottom pipe, and curved pipe is connected with bottom ligament, and the madial wall of curved pipe is
Arcwall face, heart pipe is threadedly coupled with curved pipe, and the top of heart pipe is fixedly connected with drill body, bottom pipe, curved pipe and heart pipe
Inner chamber connects to form central passage.
Further, the supporting table for supporting core pipe is provided with the top of described drill body.
Further, described drill body bottom offers diffusion groove, and diffusion groove connects with bottom spray orifice and central passage respectively
It is logical.
Further, described drill body bottom is provided with hard alloy spherical-teeth.
Further, described curved pipe and bottom ligament are 1mm.
Further, the quantity of described interior spray-hole is 10~12, and spurting is set in a ring.
The beneficial effects of the utility model：
The utility model cooperatively forms annular nozzle structure using curved pipe and bottom ligament, and compressed air is flowing through arc
Guan Shi, because wall attachment effect can not only change the flow direction of gas, and can form inside it larger negative pressuren zone,
Stronger swabbing action can be produced by gas to external world.Therefore, traditional interior spray-hole is set to ring-type spurting, coordinates arc
Pipe is used, and can largely solve existing reverse circulation drill bit in cranny development, leakage stratum drilling, reacting cycle is sometimes
Formed not enough thoroughly, quite a few gas carry rock dust from outer annular space escape discharge earth's surface, prevent aperture return wind show
As.Meanwhile, traditional reverse circulation drill bit carries out deslagging, still, such built-in pipe using single built-in pipe more for the ease of installing
Reacting cycle effect is poor, and is not easy to processing, and the processing especially for arcwall face is extremely difficult, and the utility model uses bottom
Pipe, curved pipe and heart pipe, which are connected, replaces single built-in pipe, not only easy to process, and reacting cycle deslagging effect is good, air quantity
Consumption is small, meanwhile, it is capable to avoid annular space leakage and long term accumulation from causing a large amount of landwaste, rock dust to be deposited between drilling tool and hole wall
Outer czermak space puies forward brill difficulty so as to cause.Due to producing larger negative pressuren zone in curved pipe, suction force is larger, therefore, it is possible to ensure
The rock dust of outer annular space is met on the drilling rod that water will not be bonded in, it is to avoid the drilling accident such as cause burying, bit freezing, even have drilling tool to fracture
Generation.
Brief description of the drawings
Fig. 1 is the utility model structural representation.
In figure, 1- drill bodies, 2- air slots, spray-hole in 3-, 4- bottoms spray orifice, 5- bottoms pipe, 6- curved pipes, 7- hearts pipe,
8- central passages, 9- supporting tables, 10- diffusions groove, 11- hard alloy spherical-teeths.
Embodiment
In order that the purpose of this utility model, technical scheme and beneficial effect are clearer, below in conjunction with accompanying drawing, to this
The preferred embodiment of utility model is described in detail, to facilitate the technical staff to understand.
As shown in figure 1, described mining machinery includes drill body 1, bottom pipe 5, curved pipe 6, heart pipe 7 with mining drill bit,
Wherein, the interior spray-hole 3 for offering and being connected respectively with air slot 2 on air slot 2, side wall is offered on described drill body 1
With bottom spray orifice 4, the intracavity bottom of drill body 1, which is provided with shoulder, shoulder, is welded with bottom pipe 5, curved pipe 6 and the gap of bottom pipe 5
It is connected, the madial wall of curved pipe 6 is arcwall face, and heart pipe 7 is threadedly coupled with curved pipe 6, the top of heart pipe 7 and drill body
1 is fixedly connected, and bottom pipe 5, curved pipe 6 connect to form central passage 8 with the inner chamber of heart pipe 7, and traditional reverse circulation drill bit is in order to just
In installation, deslagging is carried out using single built-in pipe more, still, such built-in pipe reacting cycle effect is poor, and be not easy to processing, it is special
Processing not for arcwall face is extremely difficult, and the utility model is connected using bottom pipe 5, curved pipe 6 and heart pipe 7 and replaces single
Root built-in pipe, not only easy to process, and reacting cycle deslagging effect is good, air quantity consumption is small, meanwhile, it is capable to avoid annular space leakage with
And long term accumulation cause a large amount of landwaste, rock dust to be deposited in the outer czermak space between drilling tool and hole wall so as to cause, to carry brill difficult.Arc
Pipe 6 cooperatively forms annular nozzle structure with the gap of bottom pipe 5, and compressed air is when flowing through curved pipe 6, because wall attachment effect not only may be used
To change the flow direction of gas, and larger negative pressuren zone can be formed inside it, can to external world gas produce it is stronger
Swabbing action.Therefore, traditional interior spray-hole 3 is set to ring-type spurting, coordinates curved pipe 6 to use, can be largely
Upper to solve existing reverse circulation drill bit in cranny development, leakage stratum drilling, it is not thorough enough that reacting cycle is formed sometimes, quite
A part of gas carries rock dust and returns wind phenomenon from the aperture that the escape of outer annular space is discharged earth's surface and occurred.Due to being produced in curved pipe 6
Larger negative pressuren zone, suction force is larger, therefore, it is possible to ensure that the rock dust of outer annular space is met on the drilling rod that water will not be bonded in, it is to avoid make
Into burying, bit freezing, the generation for the drilling accident such as even there is drilling tool to fracture.
Preferably, the described top of drill body 1 is provided with the supporting table 9 for supporting core pipe 7, prevents heart pipe 7 from coming off.
Preferably, the described bottom of drill body 1 offers diffusion groove 10, diffusion groove 10 respectively with bottom spray orifice 4 and center
Passage 8 is connected, and diffusion groove 10 can avoid landwaste from being blocked in the bottom of central passage 8, it is to avoid deslagging is not smooth.
Preferably, the described bottom of drill body 1 is provided with hard alloy spherical-teeth 11, strengthens the drilling energy of drill body 1
Power, while mitigating the abrasion of drill body 1.
Preferably, described curved pipe 6 and the gap of bottom pipe 5 are 1mm, and gap location forms nozzle ring structure, nozzle knot
Structure is lower apart from bottom hole, and spray angle is smaller, and suction properties and reacting cycle effect are better, still, if nozzle arrangements are apart from hole
Bottom is too low, airflow can be caused not smooth again, and curved pipe 6 is 1mm with the gap optimum width of bottom pipe 5.
Preferably, the quantity of described interior spray-hole 3 is 10~12, and spurting is set in a ring, it is ensured that Neng Gougao
Fast compressed air can form ring-type jet-stream wind.
The course of work of the present utility model：
When down-hole hammer normal impact is crept into, a part of gas after the piston acting of driving down-hole hammer is by the bottom of drill body 1
Spray orifice 4 sprays at a high speed, and then cutting carring enters central passage 8 through diffusion groove 10, and another part gas enters the side of drill body 1
Interior spray-hole 3 on wall, then comes downwards to the annular nozzle structure that curved pipe 6 is cooperatively formed with the gap of bottom pipe 5 along annular space,
Due to the wall attachment effect of gas, high velocity air is by the arcwall face madial wall jet attached flow of arcuately pipe 6.Inhaled in the volume of high velocity air
Under effect, the gas of surrounding constantly flows to the arcwall face of curved pipe 6, and produces larger negative pressuren zone in its vicinity, in pressure
In the presence of power difference, the gas and the gas of annular space come in from diffusion groove 10 carry out cooling down and cutting carring edge to drill body 1
The bottom flow passage of drill body 1 enters central passage 8, reacting cycle to earth's surface.
Finally illustrate, preferred embodiment above is only unrestricted to illustrate the technical solution of the utility model, to the greatest extent
The utility model is described in detail by above preferred embodiment for pipe, but those skilled in the art should manage
Solution, can make various changes, without departing from the utility model claims institute to it in the form and details
The scope of restriction.
Claims (6)
1. a kind of mining machinery mining drill bit, it is characterised in that：Described mining machinery mining drill bit include drill body,
Bottom pipe, curved pipe, heart pipe, wherein, offered on described drill body offered on air slot, side wall respectively with air slot connect
Logical interior spray-hole and bottom spray orifice, the intracavity bottom of drill body, which is provided with shoulder, shoulder, is welded with bottom pipe, curved pipe and bottom
Ligament is connected, and the madial wall of curved pipe is arcwall face, and heart pipe is threadedly coupled with curved pipe, top and the drill bit sheet of heart pipe
Body is fixedly connected, and bottom pipe, curved pipe connect to form central passage with the inner chamber of heart pipe.
2. a kind of mining machinery according to claim 1 mining drill bit, it is characterised in that：At the top of described drill body
It is provided with the supporting table for supporting core pipe.
3. a kind of mining machinery according to claim 1 mining drill bit, it is characterised in that：Described drill body bottom
Diffusion groove is offered, diffusion groove is connected with bottom spray orifice and central passage respectively.
4. a kind of mining machinery according to claim 1 mining drill bit, it is characterised in that：Described drill body bottom
It is provided with hard alloy spherical-teeth.
5. a kind of mining machinery according to claim 1 mining drill bit, it is characterised in that：Described curved pipe is managed the bottom of with
Gap is 1mm.
6. a kind of mining machinery according to claim 1 mining drill bit, it is characterised in that：The number of described interior spray-hole
Measure as 10~12, and spurting is set in a ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720231717.6U CN206571429U (en) | 2017-03-10 | 2017-03-10 | A kind of mining machinery mining drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720231717.6U CN206571429U (en) | 2017-03-10 | 2017-03-10 | A kind of mining machinery mining drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206571429U true CN206571429U (en) | 2017-10-20 |
Family
ID=60057675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720231717.6U Active CN206571429U (en) | 2017-03-10 | 2017-03-10 | A kind of mining machinery mining drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206571429U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110924872A (en) * | 2018-09-20 | 2020-03-27 | 中国石油天然气股份有限公司 | Drill bit for reverse circulation drilling |
| CN111535749A (en) * | 2020-06-23 | 2020-08-14 | 西南石油大学 | High-efficient suction drainage type reverse circulation PDC drill bit |
| CN111677440A (en) * | 2020-07-15 | 2020-09-18 | 北京光大锐拓工程技术有限公司 | Drilling tool and method for drilling and deslagging simultaneously |
| CN114482886A (en) * | 2019-12-19 | 2022-05-13 | 中化地质矿山总局河北地质勘查院 | Pneumatic processing method for buried drilling accident in drilling hole |
-
2017
- 2017-03-10 CN CN201720231717.6U patent/CN206571429U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110924872A (en) * | 2018-09-20 | 2020-03-27 | 中国石油天然气股份有限公司 | Drill bit for reverse circulation drilling |
| CN114482886A (en) * | 2019-12-19 | 2022-05-13 | 中化地质矿山总局河北地质勘查院 | Pneumatic processing method for buried drilling accident in drilling hole |
| CN114482886B (en) * | 2019-12-19 | 2023-12-15 | 中化地质矿山总局河北地质勘查院 | Pneumatic treatment method for drill hole embedded drilling accident |
| CN111535749A (en) * | 2020-06-23 | 2020-08-14 | 西南石油大学 | High-efficient suction drainage type reverse circulation PDC drill bit |
| CN111677440A (en) * | 2020-07-15 | 2020-09-18 | 北京光大锐拓工程技术有限公司 | Drilling tool and method for drilling and deslagging simultaneously |
| CN111677440B (en) * | 2020-07-15 | 2024-05-17 | 北京光大锐拓工程技术有限公司 | Drilling tool and method for drilling and deslagging simultaneously |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206571429U (en) | A kind of mining machinery mining drill bit | |
| CN101446178B (en) | Wind pressure air drilling equipment in downhole soft outbursting coal bed and process matched therewith | |
| CN100557185C (en) | Hollow hammer hole bottom strong suction apparatus | |
| CN204782970U (en) | Low permeability coal seam water conservancy slot system | |
| CN109025825B (en) | Underground self-suction particle jet drilling device based on Venturi effect | |
| CN103527092B (en) | Suction bits expanding method is penetrated in horizontal orientation boring | |
| CN204457418U (en) | Transient state low pressure cavitation corrosion pulsing jet drill motor | |
| CN102852506A (en) | High-pressure pneumatic blasting pressure relieving and transmission increasing method | |
| CN102493831B (en) | Method for extracting coal seam gas through ground fracturing and underground horizontal drill holes | |
| CN108316907A (en) | It is a kind of to take abrasive material formula hydraulic slotted liner technique drill bit certainly | |
| CN103967421B (en) | A kind of strong pumping formula reverse cycle coring drill bit | |
| CN106368608A (en) | Novel method for conducting hot dry rock drilling through liquid nitrogen | |
| CN105298391A (en) | Drilling-punching integral construction method for gas extraction drill hole | |
| CN105178897B (en) | A kind of gas drilling manifold of ground attachment structure | |
| CN108301802A (en) | Core plugging notifying mechanism of rope core drilling assembly | |
| CN208267805U (en) | Core plugging notifying mechanism of rope core drilling assembly | |
| CN105317380B (en) | A kind of variable-flow bores and rushes unitary nozzle | |
| CN201560795U (en) | Apparatus for controlling dust with wind as medium during boring construction for gas drainage | |
| CN203961805U (en) | A kind of drawing-in type reverse circulation sampling bit | |
| CN204002578U (en) | A kind of strong pumping formula reverse cycle coring drill bit | |
| CN105328574A (en) | High-pressure rotating grinding material jet flow pore drilling and broadening device | |
| CN201334869Y (en) | Pressured air drilling equipment used in downhole loose and soft coal seam with potential gas outburst | |
| CN201087695Y (en) | High wind pressure downhole air hammer | |
| CN204200163U (en) | A kind of with the auxiliary leak stoppage tool of brill | |
| CN201857895U (en) | Single large-diameter pneumatic DTH (down the hole) hammer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |