CN114183078B - Drilling tool capable of being cooled circularly and application method - Google Patents
Drilling tool capable of being cooled circularly and application method Download PDFInfo
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- CN114183078B CN114183078B CN202111470177.4A CN202111470177A CN114183078B CN 114183078 B CN114183078 B CN 114183078B CN 202111470177 A CN202111470177 A CN 202111470177A CN 114183078 B CN114183078 B CN 114183078B
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- inlet channel
- cooling
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- 238000005553 drilling Methods 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000001816 cooling Methods 0.000 claims abstract description 174
- 239000000126 substance Substances 0.000 claims abstract description 139
- 239000003245 coal Substances 0.000 claims abstract description 13
- 238000004891 communication Methods 0.000 claims abstract description 13
- 230000036346 tooth eruption Effects 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 41
- 239000000463 material Substances 0.000 claims description 35
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 7
- 239000010432 diamond Substances 0.000 claims description 7
- 229910003460 diamond Inorganic materials 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 230000004323 axial length Effects 0.000 claims description 3
- 239000002817 coal dust Substances 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000002893 slag Substances 0.000 abstract description 7
- 238000007599 discharging Methods 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 5
- 208000001408 Carbon monoxide poisoning Diseases 0.000 abstract description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- 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
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
- E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
-
- 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
- E21B10/61—Drill bits characterised by conduits or nozzles for drilling fluids characterised by the nozzle structure
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/16—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using gaseous fluids
-
- 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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The invention discloses a circulative cooling drilling tool, which comprises a drill bit and a drill rod; the drill bit comprises a drill bit body, blades, a drill bit air inlet channel, a first cooling substance outlet channel, a cooling substance circulation channel, a communication hole and a nozzle; the drill rod is provided with a rod body, a drill rod air inlet channel is axially arranged at the inner center of the rod body, and a second cooling substance inlet channel and a second cooling substance outlet channel are symmetrically arranged on two sides of the periphery of the drill rod air inlet channel. The invention also provides a using method of the circulatively cooled drilling tool. The invention can effectively control the temperature of the drilling tool, particularly reduce the temperature of the cutting teeth of the drill bit in the coal seam bedding drilling construction process, thereby avoiding the occurrence of accidents such as drilling ignition, carbon monoxide poisoning of personnel and the like. In addition, the drill rod in the drilling tool is provided with the helical blade, so that the slag discharging capacity of the drilling tool can be effectively improved.
Description
Technical Field
The invention relates to the technical field of drilling tools, in particular to a recyclable cooling drilling tool and a use method thereof, which are particularly suitable for the construction of bedding drilling of a coal seam, and belong to the technical field of coal mine safety.
Background
The bedding drilling pre-drainage coal seam gas is widely applied to various coal mine gas control, particularly to an outburst mine, and the method is an important area outburst prevention measure. At present, most of the methods for alternately wind deslagging and water deslagging are adopted when the coal seam is drilled along the seam, and the main reason is that the drill holes along the seam are longer, when only water deslagging is adopted, the drill cuttings and water are mixed to form a pasty mixture easily, so that the drill holes are blocked, the drill rod is locked when serious, and the drill rod and the drill bit are lost, so that larger economic loss is caused; when only adopting wind to remove slag, in the long-time drilling process of the drill bit, the coal bed in the drill hole is likely to be ignited due to friction and heating, carbon monoxide is generated, and the life and the health of staff are threatened; therefore, when the drilling is performed in the bedding direction, the carbon monoxide detection device is firstly placed at the hole opening of the drill hole, when carbon monoxide is generated, the temperature of the drill bit and the drill rod is reduced by rapidly changing into a water slag discharging mode, and the drill bit and the drill rod are changed into a wind slag discharging mode after a period of time, namely, a construction method that wind slag discharging and water slag discharging are mutually alternated is adopted, but the construction method still has the possibility of igniting a coal bed in the drill hole, meanwhile, the danger of losing a drilling tool is also existed, the operation is frequent, and the labor intensity of workers is increased. Therefore, there is a need for a drilling tool that reduces its temperature during drilling to eliminate the aforementioned safety hazards.
Disclosure of Invention
The invention aims to solve the problems and provide a recyclable cooling drilling tool and a using method thereof.
The above object of the present invention is achieved by the following technical solutions: a drilling tool capable of being cooled circularly comprises a drill bit and a drill rod; the drill bit comprises a drill bit body, blades, a drill bit air inlet channel, a first cooling substance outlet channel, a cooling substance circulation channel, a communication hole and a nozzle, wherein the drill bit body comprises a drill bit base body and a disc body which are integrally formed, the disc body is arranged at the top end of the drill bit base body, a plurality of blades are arranged on the upper end face of the disc body, the drill bit air inlet channel is arranged at the central position of the drill bit base body and the disc body in a penetrating manner along the vertical direction, the nozzle protruding upwards is arranged at the top end of the drill bit air inlet channel, the first cooling substance inlet channel and the first cooling substance outlet channel are symmetrically arranged at the two sides of the periphery of the drill bit air inlet channel along the vertical direction, a circular communication hole is formed in the disc body along the circumferential direction, the inside of each blade body is provided with a cooling substance circulation channel, the bottom end of each cooling substance circulation channel is communicated with the top end of the first cooling substance inlet channel or the first cooling substance outlet channel, the inside the bottom end of the drill bit base body is provided with a first internal thread and a second internal thread, the first internal thread is arranged at the bottom end of the drill bit air inlet channel, the second internal thread is arranged at the bottom end of the first internal thread and the first cooling substance inlet channel is arranged on the peripheral surface of the first cooling substance outlet channel;
the drill rod is provided with a rod body, a drill rod air inlet channel is axially formed in the inner central position of the rod body, a second cooling substance inlet channel and a second cooling substance outlet channel are symmetrically formed in the two sides of the outer periphery of the drill rod air inlet channel, a first annular boss and a second annular boss which are concentrically arranged are arranged at the front end of the drill rod, a central through hole of the first annular boss is coaxial with the drill rod air inlet channel, the second annular boss is positioned at the periphery of the second cooling substance inlet channel and the periphery of the second cooling substance outlet channel, a first external thread matched with the first internal thread is arranged on the periphery of the first annular boss, and a second external thread matched with the second internal thread is arranged on the periphery of the second annular boss;
the front end of the drill rod is matched with the first internal thread through the first external thread, the second external thread is matched and connected with the second internal thread, after the drill rod is connected in place, the first cooling substance inlet channel of the drill bit corresponds to the second cooling substance inlet channel of the drill rod, the first cooling substance outlet channel of the drill bit corresponds to the second cooling substance outlet channel of the drill rod, and the drill bit air inlet channel corresponds to the drill rod air inlet channel.
Further, the number of the blades is 3-5.
Further, 3-5 cutting teeth are arranged on each blade.
Further, the blade is made of alloy steel or diamond material.
Further, the cutting teeth are made of alloy steel or diamond material.
Further, a third internal thread matched with the first external thread and a fourth internal thread matched with the second external thread are arranged at the tail end of the rod body.
Further, the outer peripheral surface of the rod body is provided with a helical blade, the radial thickness D of the helical blade is 5-15mm, the axial length L is 15-30mm, the helical angle is 40-50 degrees, and the screw pitch is 0.8-1.2 times of the diameter of the drill rod.
The invention also provides a using method of the circulatively cooled drilling tool, which comprises the following steps:
step 1, firstly, a drill bit and a drill rod are matched and connected with a first internal thread and a second external thread through a first external thread; the drill rod is arranged on the drilling machine, and the drilling machine drives the drill rod to drill or retreat;
step 2, installing a water braid at the tail end of the drill rod, wherein the other end of the water braid is respectively connected with an air pipe, a cooling substance supply pipeline and a cooling substance discharge pipeline, the other end of the air pipe is connected with an underground compressed air pipeline, the cooling substance supply pipeline is connected with an outlet of a cooling substance circulation box through a booster pump, and an inlet of the cooling substance circulation box is connected with the cooling substance discharge pipeline; after the water braid is installed, the air pipe is communicated with the air inlet channel of the drill rod, the cooling substance supply pipeline is communicated with the second cooling substance inlet channel of the drill rod, and the cooling substance discharge pipeline is communicated with the second cooling substance discharge channel of the drill rod;
step 3, when the drill drives the drill rod to drill, the drill bit cuts and breaks the coal body by using the cutting teeth, generates heat, and the cooling substance sequentially enters the second cooling substance inlet channel and the first cooling substance inlet channel from the cooling substance circulation box through the booster pump, passes through the cooling substance supply pipeline and the water braid, flows into the communication hole through the cooling substance circulation channel, cools each blade and each cutting tooth, flows to the first cooling substance discharge channel, and finally enters the cooling substance circulation box through the second cooling substance discharge channel and the water braid and the cooling substance discharge pipeline;
simultaneously, air in the underground air pressure pipeline sequentially flows through the air pipe, the water braid, the drill rod air inlet channel, the drill bit air inlet channel and the nozzle to enter the bottom of a drill hole, and coal dust after the drill bit is broken is discharged out of the drill hole by means of the helical blades on the drill rod;
step 4, when the drilling machine drives the drill rod to withdraw the drill, firstly removing the cooling substance supply pipeline on the water braid, replacing the upper air pipe, and completely pressing cooling substances in the drill rod and the drill bit into the cooling substance circulation box by air in the underground air pressing pipeline; and then removing the cooling substance discharge pipeline on the water braid, reinstalling the air pipe on the water braid at the position communicated with the air inlet channel of the drill rod, and starting the normal drill withdrawal operation.
Further, the application method of the cooling drilling tool capable of circulating further comprises a step 5, wherein the step 5 specifically comprises the following steps:
when a drill rod is added, the booster pump is firstly closed, and a cooling material collecting container is placed below the water braid; then the water braid is dismantled, and at the moment, the cooling substances in the drill rod flow out of the drill rod into the cooling substance collecting container under the action of self gravity or external pressure; rapidly increasing a drill rod, installing a water braid, and restarting drilling; at this time, the cooling material in the cooling material collecting container is poured into the cooling material circulating box, and the operation is repeated until the drilling design depth is reached.
Compared with the prior art, the invention has the beneficial effects that:
the drill bit of the drilling tool is internally provided with the first cooling substance inlet channel and the first cooling substance outlet channel, and the drill rod is internally provided with the second cooling substance inlet channel and the second cooling substance outlet channel, so that the recycling of cooling substances can be effectively ensured. The temperature of the drilling tool can be effectively controlled in the coal seam bedding drilling construction process, particularly the temperature of the cutting teeth of the drill bit is reduced, and therefore accidents such as drilling ignition and carbon monoxide poisoning of personnel are avoided. In addition, the drill rod in the drilling tool is provided with the helical blade, so that the slag discharging capacity of the drilling tool can be effectively improved.
Drawings
The invention is further described below with reference to the drawings and the detailed description.
FIG. 1 is a schematic view of the drill bit and drill rod of the circulatively cooled drilling tool of the present invention;
FIG. 2 is a cross-sectional view of the drill rod of FIG. 1 taken along the A-A direction;
FIG. 3 is another schematic view of the drill bit and drill rod of the circulatively cooled drilling tool of the present invention;
FIG. 4 is a schematic view of the drill pipe bottom structure of the present invention;
FIG. 5 is a schematic illustration of a method of using the circulatively cooled drilling tool of the present invention;
in the figure: 1. drill bit, 11, bit body, 1101, bit base body, 1102, disk body, 12, blade, 13, bit intake passage, 14, first cooling substance intake passage, 15, first cooling substance discharge passage, 16, cooling substance flow passage, 17, communication hole, 18, nozzle, 19, first internal thread, 110, second internal thread, 111, cutting tooth, 2, drill stem, 21, shank, 22, drill stem intake passage, 23, second cooling substance intake passage, 24, second cooling substance discharge passage, 25, first annular boss, 26, second annular boss, 27, first external thread, 28, second external thread, 29, third internal thread, 210, fourth internal thread, 211, helical blade, 3, drill, 4, water braid, 5, air pipe, 6, cooling substance supply line, 7, cooling substance discharge line, 8, down-hole plenum line, 9, booster pump, 10, cooling substance circulation box, 20, coal body.
Detailed Description
The details of the invention and its embodiments are further described below with reference to the accompanying drawings and examples.
Example 1
Referring to fig. 1-4, a circulatively coolable drilling tool comprises a drill bit 1 and a drill rod 2; the drill bit 1 comprises a drill bit body 11, blades 12, a drill bit air inlet channel 13, a first cooling material inlet channel 14, a first cooling material outlet channel 15, a cooling material circulation channel 16, a communication hole 17 and a nozzle 18, wherein the drill bit body 11 comprises a drill bit base 1101 and a disc body 1102 which are integrally formed, the disc body 1102 is arranged at the top end of the drill bit base 1101, a plurality of blades 12 are arranged on the upper end face of the disc body 1102, the drill bit air inlet channel 13 (the cross section of the drill bit air inlet channel 13 is circular) is arranged at the central positions of the drill bit base 1101 and the disc body 1102 in a penetrating way along the vertical direction, the nozzle 18 which protrudes upwards is arranged at the top end of the drill bit air inlet channel 13, a first cooling material inlet channel 14 and a first cooling material outlet channel 15 are symmetrically arranged on two sides of the periphery of the drill bit air inlet channel 13 along the vertical direction (the cross sections of the first cooling material inlet channel 14 and the first cooling material outlet channel 15 are circular arc), a circular communication hole 17 is arranged in the circular disc body 1102 along the circumferential direction (the aperture of the communication hole 17 is 1/3-2/3 of the thickness of the circular disc body 1102), a cooling material circulation channel 16 is arranged in each blade 12, the bottom end of each cooling material circulation channel 16 is communicated with the top end of the first cooling material inlet channel 14 or the first cooling material outlet channel 15, the top end of each cooling material circulation channel 16 is communicated with the communication hole 17, a first internal thread 19 and a second internal thread 110 are arranged in the bottom end of the drill bit body 1101, the first internal thread 19 is positioned at the bottom end of the drill bit air inlet channel 13, the second internal thread 110 is located on the outer peripheral surface of the bottom end of the first cooling substance inlet passage 14 and the first cooling substance outlet passage 15;
the drill rod 2 is provided with a rod body 21, a drill rod air inlet channel 22 is axially arranged at the inner center position of the rod body 21 (the cross section of the drill rod air inlet channel 22 is circular), a second cooling substance inlet channel 23 and a second cooling substance outlet channel 24 are symmetrically arranged at two sides of the outer periphery of the drill rod air inlet channel 22 (the cross sections of the second cooling substance inlet channel 23 and the second cooling substance outlet channel 24 are circular arc), a first annular boss 25 and a second annular boss 26 which are concentrically arranged are arranged at the front end of the drill rod 2, a central through hole of the first annular boss 25 is coaxial with the drill rod air inlet channel 22, the second annular boss 26 is positioned at the periphery of the second cooling substance inlet channel 23 and the second cooling substance outlet channel 24, a first external thread 27 matched with the first internal thread 19 is arranged on the periphery of the first annular boss 25, and a second external thread 28 matched with the second internal thread 110 is arranged on the periphery of the second annular boss 26;
the front end of the drill rod 2 is matched with the first internal thread 19 through the first external thread 27, the second external thread 28 is matched and connected with the second internal thread 110, after the drill rod 2 is connected in place, the first cooling material inlet channel 14 of the drill bit 1 corresponds to the second cooling material inlet channel 23 of the drill rod 2, the first cooling material outlet channel 15 of the drill bit 1 corresponds to the second cooling material outlet channel 24 of the drill rod 2, and the drill bit air inlet channel 13 corresponds to the drill rod air inlet channel 22.
The number of blades 12 is 3-5.
3-5 cutting teeth 111 are provided on each of the blades 12.
The blade 12 is made of alloy steel or diamond material.
The cutting teeth 111 are made of alloy steel or diamond material.
The rod 21 is made of alloy steel or diamond material.
A third internal thread 29 matching with the first external thread 27 and a fourth internal thread 210 matching with the second external thread 28 are provided at the tail end of the rod body 21. When a plurality of drill rods 2 are connected in succession, the third and fourth internal threads 29, 210 are used to connect with the first and second external threads 27, 28 of the front drill rod 2.
The outer peripheral surface of the rod body 21 is provided with a helical blade 211, the radial thickness D of the helical blade 211 is 5-15mm, the axial length L is 15-30mm, the helical angle is 40-50 degrees, and the screw pitch is 0.8-1.2 times of the outer diameter of the drill rod 2.
Example two
Referring to fig. 5, a method for using a cooling tool with circulation is implemented by using the cooling tool with circulation according to the first embodiment, and specifically includes the following steps:
step 1, firstly, the drill bit 1 and the drill rod 2 are matched and connected with a first internal thread 19 and a second external thread 28 and a second internal thread 110 through a first external thread 27; the drill rod 2 is arranged on the drilling machine 3, and the drilling machine 3 drives the drill rod 2 to drill or retreat;
step 2, installing a water braid 4 at the tail end of the drill rod 2, wherein the other end of the water braid 4 is respectively connected with an air pipe 5, a cooling substance supply pipeline 6 and a cooling substance discharge pipeline 7, the other end of the air pipe 5 is connected with an underground compressed air pipeline 8, the cooling substance supply pipeline 6 is connected with an outlet of a cooling substance circulation box 10 through a booster pump 9, and an inlet of the cooling substance circulation box 10 is connected with the cooling substance discharge pipeline 7; after the water braid 4 is installed, the air pipe 5 is communicated with the drill rod air inlet channel 22, the cooling substance supply pipeline 6 is communicated with the second cooling substance inlet channel 23 of the drill rod 2, and the cooling substance discharge pipeline 7 is communicated with the second cooling substance discharge channel 24 of the drill rod 2;
step 3, when the drill 3 drives the drill rod 2 to drill, the drill bit 1 cuts and breaks the coal body 20 by utilizing the cutting teeth 111, generates heat, and the cooling substance sequentially enters the second cooling substance inlet channel 23 and the first cooling substance inlet channel 14 from the cooling substance circulation box 10 through the booster pump 9, passes through the cooling substance supply pipeline 6 and the water braid 4, flows into the communication hole 17 through the cooling substance circulation channel 16, cools each blade 12 and the cutting teeth 111, flows into the first cooling substance discharge channel 15, finally enters the cooling substance circulation box 10 through the second cooling substance discharge channel 24 and the cooling substance discharge pipeline 7;
simultaneously, air in the underground air pressure pipeline 8 sequentially flows through the air pipe 5, the water braid 4, the drill rod air inlet channel 22, the drill bit air inlet channel 13 and the nozzle 18 to enter the bottom of a drill hole, and coal dust after the drill bit 1 is broken is discharged out of the drill hole by means of the spiral blades 211 on the drill rod 2;
step 4, when the drilling machine 3 drives the drill rod 2 to withdraw the drill, firstly, the cooling substance supply pipeline 6 on the water braid 4 is removed, the air pipe 5 is replaced, and the air in the underground air pressure pipeline 8 presses the cooling substances in the drill rod 2 and the drill bit 1 into the cooling substance circulation box 10; and then removing the cooling substance discharge pipeline 7 on the water braid 4, reinstalling the air pipe 5 on the water braid 4 at the position communicated with the air inlet channel 22 of the drill rod, and starting the normal drill withdrawal operation.
Example III
The second difference from the embodiment is that: the application method of the recyclable cooling drilling tool further comprises a step 5, wherein the step 5 specifically comprises the following steps: when the drill rod 2 is added, the booster pump 9 is closed at first, and a cooling material collecting container is placed below the water braid 4; then the water braid 4 is dismantled, and at the moment, the cooling substances in the drill rod 2 flow out of the drill rod 2 to enter a cooling substance collecting container under the action of self gravity or external pressure; rapidly increasing the drill rod 2, installing the water braid 4 and restarting drilling; at this time, the cooling material in the cooling material collecting container is poured into the cooling material circulation box 10, and the above is repeated until the drilling depth is reached.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (9)
1. A circulatively cooled drilling tool, which is characterized by comprising a drill bit and a drill rod; the drill bit comprises a drill bit body, blades, a drill bit air inlet channel, a first cooling substance outlet channel, a cooling substance circulation channel, a communication hole and a nozzle, wherein the drill bit body comprises a drill bit base body and a disc body which are integrally formed, the disc body is arranged at the top end of the drill bit base body, a plurality of blades are arranged on the upper end face of the disc body, the drill bit air inlet channel is arranged at the central position of the drill bit base body and the disc body in a penetrating manner along the vertical direction, the nozzle protruding upwards is arranged at the top end of the drill bit air inlet channel, the first cooling substance inlet channel and the first cooling substance outlet channel are symmetrically arranged at the two sides of the periphery of the drill bit air inlet channel along the vertical direction, a circular communication hole is formed in the disc body along the circumferential direction, the inside of each blade body is provided with a cooling substance circulation channel, the bottom end of each cooling substance circulation channel is communicated with the top end of the first cooling substance inlet channel or the first cooling substance outlet channel, the inside the bottom end of the drill bit base body is provided with a first internal thread and a second internal thread, the first internal thread is arranged at the bottom end of the drill bit air inlet channel, the second internal thread is arranged at the bottom end of the first internal thread and the first cooling substance inlet channel is arranged on the peripheral surface of the first cooling substance outlet channel;
the drill rod is provided with a rod body, a drill rod air inlet channel is axially formed in the inner central position of the rod body, a second cooling substance inlet channel and a second cooling substance outlet channel are symmetrically formed in the two sides of the outer periphery of the drill rod air inlet channel, a first annular boss and a second annular boss which are concentrically arranged are arranged at the front end of the drill rod, a central through hole of the first annular boss is coaxial with the drill rod air inlet channel, the second annular boss is positioned at the periphery of the second cooling substance inlet channel and the periphery of the second cooling substance outlet channel, a first external thread matched with the first internal thread is arranged on the periphery of the first annular boss, and a second external thread matched with the second internal thread is arranged on the periphery of the second annular boss;
the front end of the drill rod is matched with the first internal thread through the first external thread, the second external thread is matched and connected with the second internal thread, after the drill rod is connected in place, the first cooling substance inlet channel of the drill bit corresponds to the second cooling substance inlet channel of the drill rod, the first cooling substance outlet channel of the drill bit corresponds to the second cooling substance outlet channel of the drill rod, and the drill bit air inlet channel corresponds to the drill rod air inlet channel.
2. A circulatively coolable drilling tool as in claim 1 wherein the number of blades is 3-5.
3. A circulatively cooled drilling tool as claimed in claim 1, wherein 3 to 5 cutting teeth are provided on each of the blades.
4. A circulatively coolable drilling tool as claimed in claim 1, 2 or 3, wherein the blades are made of alloy steel or diamond material.
5. A circulatively coolable drilling tool as in claim 3 wherein the cutting teeth are formed of alloy steel or diamond material.
6. A tool according to claim 1, wherein a third internal thread is provided on the tail end of the shank which mates with the first external thread, and a fourth internal thread is provided which mates with the second external thread.
7. A circulatively cooled drilling tool according to claim 1, wherein helical blades are provided on the outer periphery of the shank, the helical blades having a radial thickness D of 5-15mm, an axial length L of 15-30mm, a helix angle of 40-50 ° and a pitch of 0.8-1.2 times the diameter of the drill rod.
8. A method of using a circulatively cooled drilling tool according to any of claims 1 to 7, and comprising the steps of:
step 1, firstly, a drill bit and a drill rod are matched and connected with a first internal thread and a second external thread through a first external thread; the drill rod is arranged on the drilling machine, and the drilling machine drives the drill rod to drill or retreat;
step 2, installing a water braid at the tail end of the drill rod, wherein the other end of the water braid is respectively connected with an air pipe, a cooling substance supply pipeline and a cooling substance discharge pipeline, the other end of the air pipe is connected with an underground compressed air pipeline, the cooling substance supply pipeline is connected with an outlet of a cooling substance circulation box through a booster pump, and an inlet of the cooling substance circulation box is connected with the cooling substance discharge pipeline; after the water braid is installed, the air pipe is communicated with the air inlet channel of the drill rod, the cooling substance supply pipeline is communicated with the second cooling substance inlet channel of the drill rod, and the cooling substance discharge pipeline is communicated with the second cooling substance discharge channel of the drill rod;
step 3, when the drill drives the drill rod to drill, the drill bit cuts and breaks the coal body by using the cutting teeth, generates heat, and the cooling substance sequentially enters the second cooling substance inlet channel and the first cooling substance inlet channel from the cooling substance circulation box through the booster pump, passes through the cooling substance supply pipeline and the water braid, flows into the communication hole through the cooling substance circulation channel, cools each blade and each cutting tooth, flows to the first cooling substance discharge channel, and finally enters the cooling substance circulation box through the second cooling substance discharge channel and the water braid and the cooling substance discharge pipeline;
simultaneously, air in the underground air pressure pipeline sequentially flows through the air pipe, the water braid, the drill rod air inlet channel, the drill bit air inlet channel and the nozzle to enter the bottom of a drill hole, and coal dust after the drill bit is broken is discharged out of the drill hole by means of the helical blades on the drill rod;
step 4, when the drilling machine drives the drill rod to withdraw the drill, firstly removing the cooling substance supply pipeline on the water braid, replacing the upper air pipe, and completely pressing cooling substances in the drill rod and the drill bit into the cooling substance circulation box by air in the underground air pressing pipeline; and then removing the cooling substance discharge pipeline on the water braid, reinstalling the air pipe on the water braid at the position communicated with the air inlet channel of the drill rod, and starting the normal drill withdrawal operation.
9. The method of claim 8, further comprising step 5, wherein step 5 is specifically: when a drill rod is added, the booster pump is firstly closed, and a cooling material collecting container is placed below the water braid; then the water braid is dismantled, and at the moment, the cooling substances in the drill rod flow out of the drill rod into the cooling substance collecting container under the action of self gravity or external pressure; rapidly increasing a drill rod, installing a water braid, and restarting drilling; at this time, the cooling material in the cooling material collecting container is poured into the cooling material circulating box, and the operation is repeated until the drilling design depth is reached.
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| CN202111470177.4A CN114183078B (en) | 2021-12-03 | 2021-12-03 | Drilling tool capable of being cooled circularly and application method |
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| CN202111470177.4A CN114183078B (en) | 2021-12-03 | 2021-12-03 | Drilling tool capable of being cooled circularly and application method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999040291A1 (en) * | 1998-02-06 | 1999-08-12 | Dresser Industries, Inc. | Roller cone drill bit with improved thrust bearing assembly |
| CN1406309A (en) * | 2000-03-02 | 2003-03-26 | 桑德维克公司 | Rock drill bit and method for its manufacturing |
| CN203161286U (en) * | 2013-04-10 | 2013-08-28 | 曹召丹 | Air-pressing and cooling powder-discharging device by adopting nitrogen in down holes |
| CN108547604A (en) * | 2018-06-20 | 2018-09-18 | 河南理工大学 | A kind of brill punching press integrated apparatus and method |
| CN208845103U (en) * | 2018-08-20 | 2019-05-10 | 江苏华展石油机械有限公司 | A kind of oil bit self-cooling set |
-
2021
- 2021-12-03 CN CN202111470177.4A patent/CN114183078B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999040291A1 (en) * | 1998-02-06 | 1999-08-12 | Dresser Industries, Inc. | Roller cone drill bit with improved thrust bearing assembly |
| CN1406309A (en) * | 2000-03-02 | 2003-03-26 | 桑德维克公司 | Rock drill bit and method for its manufacturing |
| CN203161286U (en) * | 2013-04-10 | 2013-08-28 | 曹召丹 | Air-pressing and cooling powder-discharging device by adopting nitrogen in down holes |
| CN108547604A (en) * | 2018-06-20 | 2018-09-18 | 河南理工大学 | A kind of brill punching press integrated apparatus and method |
| CN208845103U (en) * | 2018-08-20 | 2019-05-10 | 江苏华展石油机械有限公司 | A kind of oil bit self-cooling set |
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