CN104763346A - Hollow-out inner cutting discharge alloy drill bit - Google Patents
Hollow-out inner cutting discharge alloy drill bit Download PDFInfo
- Publication number
- CN104763346A CN104763346A CN201510106977.6A CN201510106977A CN104763346A CN 104763346 A CN104763346 A CN 104763346A CN 201510106977 A CN201510106977 A CN 201510106977A CN 104763346 A CN104763346 A CN 104763346A
- Authority
- CN
- China
- Prior art keywords
- drill bit
- hollow
- flow guide
- alloy
- alloy sheet
- 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.)
- Pending
Links
- 239000000956 alloy Substances 0.000 title claims abstract description 32
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 32
- 238000005520 cutting process Methods 0.000 title claims abstract description 31
- 238000005553 drilling Methods 0.000 claims abstract description 41
- 239000003245 coal Substances 0.000 claims abstract description 14
- 238000010276 construction Methods 0.000 claims abstract description 14
- 238000000605 extraction Methods 0.000 claims abstract description 7
- 239000011159 matrix material Substances 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000005275 alloying Methods 0.000 claims description 7
- 240000007594 Oryza sativa Species 0.000 claims 1
- 235000007164 Oryza sativa Nutrition 0.000 claims 1
- 235000009566 rice Nutrition 0.000 claims 1
- 238000005070 sampling Methods 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 5
- 230000002265 prevention Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 abstract 1
- 238000005086 pumping Methods 0.000 description 4
- 239000011435 rock Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention belongs to the coal mine gas extraction technical field and relates to a hollow-out inner cutting discharge alloy drill bit for underground coal mine gas extraction drilling construction. The hollow-out inner cutting discharge alloy drill bit comprises a drill bit matrix, a main alloy sheet group, an auxiliary alloy sheet group, lateral side alloy sheet groups, lateral side main flow guide grooves, lateral side auxiliary flow guide grooves, a front portion flow guide groove, a drill bit hollow-out inner chamber, a flow guide opening and drill bit internal threads; the front end of the drill bit is formed by the main alloy sheet group, the auxiliary alloy sheet group and the front portion flow guide groove and is of a hollow-out structure with the hollow middle; the lateral side main flow guide grooves, the lateral side auxiliary flow guide grooves, the front portion flow guide groove, the flow guide opening and the drill bit hollow-out inner chamber form a discharge channel of the gas and drilling cuttings. According to the hollow-out inner cutting discharge alloy drill bit, the current cutting discharge way is changed, the negative pressure air is utilized as a fluid medium, the outer drilling cutting discharge is changed into the inner discharge to enable the drilling cuttings to be discharged from the inside of a closed drill pipe, and accordingly the dust-free construction is implemented and the fixed-point sampling can be performed at any time during drilling construction; the ultra-limit prevention and blowout prevention effect is achieved; the significant innovation is brought to the gas treatment process.
Description
Technical field
The present invention relates to coal mine gas extraction technical field, particularly chip removal alloy bit in a kind of coal mine gas extraction construction drill hollow out.
Background technology
Current gas control technology mainly adopts coal seam Gas pre-drainage, and the construction of mash gas pumping drilling is the key link of gas control.The hardness factor of high gas and outburst mine institute mining coal seam is many 0.5 once, and the three-soft seam affected by sliding structure especially, hardness factor is less than 0.3.The construction method of existing mash gas pumping drilling adopts external chip discharging formula drill bit to coordinate Rhizoma Sparganii circular arc rod boring, the chip removal of pressure wind.This construction method bits dirt is large, affects operating environment; In boring, residual a large amount of ickings, affects gas drainage results; To hole wall impact failure in Rhizoma Sparganii circular arc drilling rod rotary course, cause that to be constructed into porosity low; Can not determine that drilling cuttings is originated during prior art drill hole sampling, cannot spot sampling be realized, make appraisal report reliability decrease; In work progress, Gas is wayward, causes gas spray orifice, transfinites.
Summary of the invention
The object of the invention is to overcome above-mentioned technical deficiency, there is provided a kind of facility simple, adopt hollow out to be structure, interior chip removal mode, drilling cuttings is discharged in drill bit, drilling rod internal closed space, make job site sanitation and hygiene, can spot sampling at any time, chip removal alloy bit in the coal mine gas extraction construction drill hollow out improving extracting result.
The technical solution adopted in the present invention is: adopt a kind of hollow out chip removal alloy bit, chisel edge is made up of two groups of master alloying sheets, two groups of assistant alloy sheets and four groups of anterior guiding gutters, four groups of flow-guiding mouths, two groups of master alloying sheets, two groups of assistant alloy sheets adopt the engraved structure of the symmetrical cross distribution in axle center, drill bit central hollow; Drill bit outer wall four groups of side alloy sheets are corresponding with alloy sheet before drill bit to distribute, four groups of side major flow grooves, four groups of sides assist water conservancy diversion groove to form gas passage in four groups of anterior water conservancy diversion grooves, four groups of flow-guiding mouths, and in the drill bit of rear end, screw thread and 88.9mm round bur pole pair connect.
In sum, the present invention has following beneficial effect: the negative pressure utilizing the existing gas drainage system of mine to provide is power, by drill bit, drilling rod and connecting line, the mist containing drilling cuttings, gas is made to be enclosed in confined space, achieve in boring and there is no drilling cuttings residual packing, this drill bit is used to have construction site clean without dust, have the advantages that blowout prevention prevents surpassing, achieving spot sampling at any time, can use under soft, fractured rock and solid rock environment, can construct down to, on to etc. coal, rock boring; In hollow out, chip removal alloy bit coordinates φ 88.9 round bur bar to use, impact failure to hole wall when having exempted to use Three-edged drill stem running, promote drill capacity and drilling construction speed is accelerated, drillable length increases, hole pumping and mining life is the major reform of gas control technique.
Accompanying drawing explanation
Illustrate with embodiment below in conjunction with accompanying drawing.
Accompanying drawing 1 is the anterior schematic diagram of drill bit of the present invention.
Accompanying drawing 2 is one of the side four of drill bit of the present invention generalized section.
In Fig. 1, Fig. 2,1-bit matrix 2-master alloying sheet group, 3-assistant alloy sheet group, 4-side alloy sheet group, 5-side assist the anterior guiding gutter of water conservancy diversion groove, 6-side major flow groove, 7-, 8-drill bit hollow out inner chamber, 9-flow-guiding mouth, 10-drill bit internal thread.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further elaborated.
As shown in Figure 1, Figure 2, adopt chip removal alloy bit in a kind of hollow out, it comprises bit matrix 1, water conservancy diversion groove 5, anterior guiding gutter 7 are assisted in master alloying sheet group 2, assistant alloy sheet group 3, side alloy sheet group 4, side major flow groove 6, side, drill bit hollow out inner chamber 8, flow-guiding mouth 9, drill bit internal thread 10, it is characterized in that: drill bit adopts chip removal mode in engraved structure, in drilling process, drilling cuttings is discharged in drill bit inner chamber, avoids drill bit blocking occurs in drilling process.Water conservancy diversion groove 6, flow-guiding mouth 9 and anterior guiding gutter 7 is assisted by side major flow groove 5, side, the negative pressure wind utilizing the special gas exhaust pipeline of underground coal mine to provide is chip removal power source, and the drilling cuttings that drill bit master alloying sheet group 2, assistant alloy sheet group 3 and side alloy sheet group 4 are produced enters drill bit inner chamber smoothly.The round bur bar being 60mm--70mm by drill bit and an internal diameter is connected, round bur bar connects a wired hose, wired hose is connected on a drilling cuttings separator, drilling cuttings separator connects the special gas exhaust pipeline of underground coal mine through wired hose, and the negative pressure provided using gas suction pump is as power source.First open drilling cuttings separator outlet side control valve during construction drill, then start rig.Drilling cuttings is sucked in drilling rod from hollow out chip removal alloy bit by negative pressure wind, and enters drilling cuttings separator, and after drilling cuttings is separated, closed control valve drilling cuttings is automatically discharged from drilling cuttings separator, and gas bleeding enters the special gas exhaust pipeline of underground coal mine.When needs sample, pull sampling to control hand handle, sampling is filled with upper end protective cover and is opened, and after sampling filling fully-jewelled bits, closed control valve is opened sampling valve and taken out sampling hot-metal carburized steel bottle.Realize drilling cuttings separated from the gas, and realize sampling at any time; The isolated gas containing gas is discharged to Special back air way by the special gas exhaust pipeline of underground coal mine.
In mash gas pumping drilling, chip removal construction method and the other patent applied for of drilling cuttings separator, be not described further at this.
Be characterized in: hollow out chip removal alloy bit, can discharged smoothly by drilling cuttings under the effect of negative-pressure air power and not block, it is inner that drilling cuttings sucks drilling rod from chisel edge water conservancy diversion groove, guarantees that there is not drilling cuttings in boring piles up; Adopting the round bur bar through being 60mm--70mm in drilling rod, ensureing drilling cuttings smoothly by discharging in drilling rod under suction function, drill hole inner wall is not produced in round bur bar operation process and impact; Drilling cuttings separator in normal operation, can realize drilling cuttings and is separated, considers dirt separation and gas-water separation to be worth doing, and under the manipulation of constructor, when the different depth of holing, realizes automatically sampling at any time.
Claims (2)
1. chip removal alloy bit in the hollow out of a coal mine gas extraction construction drill, it is characterized in that: it comprises bit matrix, water conservancy diversion groove, anterior guiding gutter are assisted in master alloying sheet group, assistant alloy sheet group, side alloy sheet group, side major flow groove, side, drill bit hollow out inner chamber, flow-guiding mouth, drill bit internal thread, it is characterized in that: adopt the symmetrical cross distribution in axle center, be made up of the engraved structure of hollow two master alloying sheet groups, two assistant alloy sheet groups and four anterior water conservancy diversion grooves.
2. chip removal alloy bit in the hollow out of coal mine gas extraction construction drill according to claim 1, it is characterized in that: adopt the symmetrical rice font distribution in axle center, by the passing away that water conservancy diversion groove, four flow-guiding mouths and four anterior water conservancy diversion grooves are assisted in four side major flow grooves, four sides, drill bit hollow out inner chamber forms gas and drilling cuttings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510106977.6A CN104763346A (en) | 2015-03-12 | 2015-03-12 | Hollow-out inner cutting discharge alloy drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510106977.6A CN104763346A (en) | 2015-03-12 | 2015-03-12 | Hollow-out inner cutting discharge alloy drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104763346A true CN104763346A (en) | 2015-07-08 |
Family
ID=53645403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510106977.6A Pending CN104763346A (en) | 2015-03-12 | 2015-03-12 | Hollow-out inner cutting discharge alloy drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104763346A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105370217A (en) * | 2015-11-12 | 2016-03-02 | 太原理工大学 | Drill stem with internal powder discharging function |
| CN110799298A (en) * | 2017-06-27 | 2020-02-14 | 喜利得股份公司 | Drill bit for working rock by drilling |
| CN110799297A (en) * | 2017-06-27 | 2020-02-14 | 喜利得股份公司 | Drill bit for working rock by drilling |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1829850A (en) * | 2003-06-30 | 2006-09-06 | 钴碳化钨硬质合金公司 | Earth penetrating rotary drill bit with helical ports |
| JP2010229722A (en) * | 2009-03-27 | 2010-10-14 | Nittoku Kikai Kogyo Kk | Excavating bit |
| CN102430781A (en) * | 2011-10-27 | 2012-05-02 | 成都工具研究所有限公司 | Inner chip removal deep hole drilling tool for hard alloys |
| CN103556947A (en) * | 2013-11-15 | 2014-02-05 | 重庆大学 | Coal mine underground self-suction abrasive jet flow drill bit and drilling method |
| CN104070207A (en) * | 2014-06-20 | 2014-10-01 | 乐山斯堪纳机械制造有限公司 | Drill bit and method for processing deep hole of shaft type product |
-
2015
- 2015-03-12 CN CN201510106977.6A patent/CN104763346A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1829850A (en) * | 2003-06-30 | 2006-09-06 | 钴碳化钨硬质合金公司 | Earth penetrating rotary drill bit with helical ports |
| JP2010229722A (en) * | 2009-03-27 | 2010-10-14 | Nittoku Kikai Kogyo Kk | Excavating bit |
| CN102430781A (en) * | 2011-10-27 | 2012-05-02 | 成都工具研究所有限公司 | Inner chip removal deep hole drilling tool for hard alloys |
| CN103556947A (en) * | 2013-11-15 | 2014-02-05 | 重庆大学 | Coal mine underground self-suction abrasive jet flow drill bit and drilling method |
| CN104070207A (en) * | 2014-06-20 | 2014-10-01 | 乐山斯堪纳机械制造有限公司 | Drill bit and method for processing deep hole of shaft type product |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105370217A (en) * | 2015-11-12 | 2016-03-02 | 太原理工大学 | Drill stem with internal powder discharging function |
| CN105370217B (en) * | 2015-11-12 | 2018-01-09 | 太原理工大学 | Row's powder formula drilling rod in a kind of |
| CN110799298A (en) * | 2017-06-27 | 2020-02-14 | 喜利得股份公司 | Drill bit for working rock by drilling |
| CN110799297A (en) * | 2017-06-27 | 2020-02-14 | 喜利得股份公司 | Drill bit for working rock by drilling |
| US11125019B2 (en) | 2017-06-27 | 2021-09-21 | Hilti Aktiengesellschaft | Drill bit for chiselling rock |
| US11691204B2 (en) | 2017-06-27 | 2023-07-04 | Hilti Aktlengesellschaft | Drill for chiseling stone |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150708 |
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| WD01 | Invention patent application deemed withdrawn after publication |