CN201531216U - Multistage cutting block-resistant guiding control drill bit - Google Patents

Multistage cutting block-resistant guiding control drill bit Download PDF

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Publication number
CN201531216U
CN201531216U CN2009200489949U CN200920048994U CN201531216U CN 201531216 U CN201531216 U CN 201531216U CN 2009200489949 U CN2009200489949 U CN 2009200489949U CN 200920048994 U CN200920048994 U CN 200920048994U CN 201531216 U CN201531216 U CN 201531216U
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CN
China
Prior art keywords
drill bit
screw thread
drill
bit
core
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.)
Expired - Fee Related
Application number
CN2009200489949U
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Chinese (zh)
Inventor
黄梅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NANJING JIEJIA TECHNOLOGY Co Ltd
Original Assignee
NANJING JIEJIA TECHNOLOGY Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NANJING JIEJIA TECHNOLOGY Co Ltd filed Critical NANJING JIEJIA TECHNOLOGY Co Ltd
Priority to CN2009200489949U priority Critical patent/CN201531216U/en
Application granted granted Critical
Publication of CN201531216U publication Critical patent/CN201531216U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model provides a multistage cutting block-resistant guiding control drill bit, which is characterized by comprising a rock core drill bit, a drill body, a front three-wing drill bit and a ventilation pipe, wherein the front three-wing drill bit is positioned on the rock core drill bit, the rock core drill bit is fixed on the drill body by a screw thread, the drill body is welded with three pieces of hole-enlarged cutting sheets, wind-guide powder-discharge holes are arranged among the hole-enlarged cutting sheets, the ventilation pipe is arranged on a base of the drill body by a screw thread, a cone wind-guide powder-discharge baffle plate is fixed on the ventilation pipe by a screw thread, three ventilation openings on the drill bit are provided with a ventilation stop valve, and the block-resistant guiding control drill bit is connected with an external drill rod by a screw thread. The multistage cutting block-resistant guiding control drill bit has the advantages of having safety, reliability, good guide performance, high pore-forming rate and fast drilling speed, being capable of being widely used for underground drilling of an anthraxylon layer in a coal mine, being particularly suitable for drilling operation in a soft coal layer and a middle thin coal layer, having simple structure and convenient use operation, ,greatly improving the production efficiency and the productivity, and obviously improving the social benefits and the economic benefits.

Description

The anti-blocking guide and control drill bit of multistage cutting
Technical field
The utility model relates to a kind of guiding drilling apparatus, this coal seam anti-blocking guide and control drill bit of multistage cutting of drilling under particularly a kind of coal mine.Belong to the coal mine machinery technical field.
Background technology
Coal and gas are given prominence to or gas explosion accident is that colliery harm is the most serious, the accident that the most easily causes casualties.Particularly coal and gas are outstanding, not only cause a tremendous loss of lives, and hindered the performance of development of productivity and mechanization level, for guaranteeing mine safety, according to the rules, when projecting coal bed operation, must drill earlier and take out coal-bed gas in advance, be no core drill bit and core drill bit is arranged because at present the drill bit that uses adopts.When no core drill bit crept into, guidance quality was poor, and inclined to one side hole phenomenon easily takes place, and can not get to the design attitude and the degree of depth, and it is lower to drill into porosity.Though and have core drill bit to have certain guidance quality, whenever creep into one section need and get the coal core, seriously restricting rate of penetration, workload is big, it is slow to creep into speed, efficient is low.Simultaneously, when drill hole spray, the coal dust of ejection easily stops up the air outlet of drill bit, causes hole not powder delivery and stick of tool phenomenon.Cause a large amount of working time human and material resources wastes, increase to produce and generate this, restricting seriously that mine gas is administered and safety in production, so its innovation, improvement are imperative.
Summary of the invention
The utility model provide a kind of safe, reliable, guidance quality is good, become porosity height, the fast anti-blocking guide and control drill bit of multistage cutting of rate of penetration, its purpose is intended to overcome the prior art defective, can effectively solve drilling difficulty poor with guidance quality, become that porosity is low, problem such as stick of tool and workload are big.
Technical solution of the present utility model: it is characterized in that comprising core drill bit, drill body, preposition three-wing bit, air chimney, wherein preposition three-wing bit is positioned on the core drill bit, core drill bit is fixed on the drill body by screw thread, be welded with three reaming cutting blades on the drill body, be provided with the wind-guiding powder outlet between the reaming cutting blade, air chimney is positioned on the drill body base by screw thread, cone wind-guiding row powder baffle plate is fixed on the air chimney by screw thread, and three ventilation openings on the drill bit are provided with the ventilation non retern valve, and anti-blocking guide and control drill bit joins by screw thread and outer drill rod.
Advantage of the present utility model: safety, reliable, guidance quality is good, become porosity height, rate of penetration to be applicable to that soon under the coal mine drill in this coal seam, particularly soft seam, middle girdle are drilled already, simple in structure, use easy to operate, enhance productivity greatly and productivity, improve society and remarkable in economical benefits.
Description of drawings
Accompanying drawing 1 is the structural upright structural representation of the anti-blocking guide and control drill bit of multistage cutting.
Among the figure 1 is core drill bit, the 2nd, drill body, the 3rd, preposition three-wing bit, the 4th, reaming cutting blade, the 5th, air chimney, the 6th, ventilation non retern valve, the 7th, cone wind-guiding row powder baffle plate, the 8th, wind-guiding powder outlet, the 9th, screw thread.
The specific embodiment
Contrast accompanying drawing 1, its structure is to comprise core drill bit 1, drill body 2, preposition three-wing bit 3, air chimney 5, wherein preposition three-wing bit 3 is positioned on the core drill bit 1, core drill bit 1 is fixed on the drill body 2 by screw thread 9, be welded with three reaming cutting blades 4 on the drill body 2, be provided with wind-guiding powder outlet 8 between the reaming cutting blade 4, the drill body bottom is provided with screw thread, be used for Allianz knot air chimney 5, air chimney 5 is positioned on the drill body base by screw thread, and cone wind-guiding row powder baffle plate 7 is fixed on the air chimney 5 by screw thread 9, and three ventilation openings on the drill bit 3 are provided with ventilation non retern valve 6.Anti-blocking guide and control drill bit joins by screw thread 9 and outer drill rod.
Said core drill bit 1 is to make parent by the hollow round steel, in the above the core drill bit body made of welding-on alloy cutting blade; Three-wing bit 3 is alloy bits, air chimney 5 be by seamless steel pipe make, reaming cutting blade 4 is made of alloy sheet and three angle steel welding-ons, and drill body 2 is to make or use the round steel processing and fabricating with seamless steel pipe and steel plate, and cone wind-guiding row powder baffle plate 7 can be made by round steel.
In order to guarantee result of use, three-wing bit 3 and firm with core drill bit 1 welding.
During making, add three wings on the core drill bit and do not have the little drill bit of core having, when creeping into, coal body is earlier by bradawl head cutting coal body, cut by core drill bit then and lead, the coal body that cuts away is discharged bit drills by the wind-guiding powder outlet on the drill body, and the outside of drill body adds peace three wings reaming section, be responsible for reaming, its big I is adjusted.Simultaneously, the drill bit air outlet is provided with non retern valve, stops up the ventilation opening of drill bit to prevent spray orifice, to prevent stick of tool.
During work, the air outlet on the drill bit is by ventilation non retern valve 6 air feeds, and non retern valve is opened under the style of blast during ventilation, and when the big generation spray orifice of coal-bed gas, non retern valve is closed under the effect of gas pressure.After spray orifice stopped, non retern valve was opened using of blast again.When drilling, three-wing bit 3 is the cutting coal bodies earlier, are cut by core drill bit then and lead, and the coal body of cutting enters core drill bit 1 and drill body, under the effect of blast, discharges outside drill bit and the drill body by the wind-guiding powder outlet.Core drill bit 1 is with annular contact and cutting coal body, and the cutting back forms a cylinder, and cylinder can play the guiding role in coal body.Reaming cutting blade 4 can make boring expand needed requirement to.This utility model guidance quality is good, creeps into soon, becomes the porosity height, creeps into deeply, a large amount of time and workload have been saved, improved production efficiency and security reliability, simple in structure, easy to operate, safe and reliable, be the innovation greatly that this coal seam deep hole is drilled under the coal mine.

Claims (5)

1. the anti-blocking guide and control drill bit of multistage cutting, it is characterized in that comprising core drill bit, drill body, preposition three-wing bit (3), air chimney, wherein preposition three-wing bit is positioned on the core drill bit, core drill bit is fixed on the drill body by screw thread, be welded with three reaming cutting blades on the drill body, be provided with the wind-guiding powder outlet between the reaming cutting blade, air chimney is positioned on the drill body base by screw thread, and cone wind-guiding row powder baffle plate is fixed on the air chimney by screw thread, three ventilation openings on the drill bit are provided with the ventilation non retern valve, and anti-blocking guide and control drill bit joins by screw thread and outer drill rod.
2. the anti-blocking guide and control drill bit of multistage cutting according to claim 1 is characterized in that screw thread is located at the drill body bottom.
3. the anti-blocking guide and control drill bit of multistage cutting according to claim 1 is characterized in that said core drill bit is to make parent by the hollow round steel, the core drill bit body that welding-on alloy cutting blade is made on core drill bit.
4. the anti-blocking guide and control drill bit of multistage cutting according to claim 1 is characterized in that the reaming cutting blade is to be made of alloy sheet and three angle steel welding-ons.
5. the anti-blocking guide and control drill bit of multistage cutting according to claim 1 is characterized in that three-wing bit and core drill bit firmly weld.
CN2009200489949U 2009-11-02 2009-11-02 Multistage cutting block-resistant guiding control drill bit Expired - Fee Related CN201531216U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009200489949U CN201531216U (en) 2009-11-02 2009-11-02 Multistage cutting block-resistant guiding control drill bit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009200489949U CN201531216U (en) 2009-11-02 2009-11-02 Multistage cutting block-resistant guiding control drill bit

Publications (1)

Publication Number Publication Date
CN201531216U true CN201531216U (en) 2010-07-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009200489949U Expired - Fee Related CN201531216U (en) 2009-11-02 2009-11-02 Multistage cutting block-resistant guiding control drill bit

Country Status (1)

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CN (1) CN201531216U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102966310A (en) * 2012-12-17 2013-03-13 中国矿业大学 Induced flow device and method for water jet kerf in drilled hole
CN104234634A (en) * 2013-06-14 2014-12-24 朱宝顺 Assembling type core-less drill bit
CN104405290A (en) * 2014-11-28 2015-03-11 淮南宏昌科技有限责任公司 Reamer bit for drilling through coal seam to pre-extract gas
CN106050156A (en) * 2016-08-12 2016-10-26 上海山顺土木工程技术有限公司 Drill rod blockage preventer for drilling type hole forming process
CN108678678A (en) * 2018-06-06 2018-10-19 中国矿业大学 A kind of mine double-layer dry type dust suction drill bit

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102966310A (en) * 2012-12-17 2013-03-13 中国矿业大学 Induced flow device and method for water jet kerf in drilled hole
CN102966310B (en) * 2012-12-17 2015-08-19 中国矿业大学 Water jet slot induced flow device and method in a kind of boring
CN104234634A (en) * 2013-06-14 2014-12-24 朱宝顺 Assembling type core-less drill bit
CN104405290A (en) * 2014-11-28 2015-03-11 淮南宏昌科技有限责任公司 Reamer bit for drilling through coal seam to pre-extract gas
CN106050156A (en) * 2016-08-12 2016-10-26 上海山顺土木工程技术有限公司 Drill rod blockage preventer for drilling type hole forming process
CN108678678A (en) * 2018-06-06 2018-10-19 中国矿业大学 A kind of mine double-layer dry type dust suction drill bit
CN108678678B (en) * 2018-06-06 2024-04-02 中国矿业大学 Mining double-layer dry dust collection drill bit

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100721

Termination date: 20121102