CN112943133A - Core drill bit using compressed air as conveying medium and scouring medium - Google Patents
Core drill bit using compressed air as conveying medium and scouring medium Download PDFInfo
- Publication number
- CN112943133A CN112943133A CN202110194467.4A CN202110194467A CN112943133A CN 112943133 A CN112943133 A CN 112943133A CN 202110194467 A CN202110194467 A CN 202110194467A CN 112943133 A CN112943133 A CN 112943133A
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- rod body
- medium
- rod
- compressed air
- core
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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
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
-
- 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
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention provides a core drill bit taking compressed air as a conveying medium and scouring the medium, which comprises a core taking device and an auxiliary device, wherein the core taking device comprises a core taking device body and a core taking device body; the auxiliary device comprises a drill rod and a positioning ring arranged in the drill rod; the coring device comprises a rod body, a penetrating mechanism, a sealing ring and a suspension ring; the rod body is sleeved in the drill rod; the rod body is internally provided with a gas circulation channel, and the side wall of the middle part of the rod body is provided with a gas hole which is communicated with the gas circulation channel; the penetrating mechanism is arranged in the rod body and used for controlling the opening and closing of the air hole and the air circulation channel; the sealing ring is sleeved on the rod body and used for ensuring the sealing property of the rod body and the drill rod; the hanging ring is connected at the end part of the rod body, and the hanging ring is propped against the positioning ring in the propelling process of the coring device. The invention realizes that compressed air is used as a conveying medium and a scouring medium, thereby protecting the rock core and the core tube, preventing the waste gas of the down-the-hole hammer from blowing off the rock core, and preventing powder slag from accumulating between the hammer head and the core tube; compressed air is used as a scouring medium, so that water resources are saved, and the environment is protected.
Description
Technical Field
The invention relates to the technical field of rope coring in geological exploration, in particular to a core drill bit taking compressed air as a conveying medium and a scouring medium.
Background
The rope that present extensively adopted is got and is adopted diamond bit grinding more + flush fluid to carry coring device + flush fluid mode of erodeing, and drilling fluid runs off easily when the horizontal drilling, leads to sticking a drill, burns out to bore, sealed quick wearing and tearing scheduling problem, and drilling fluid is easily broken away and pollutes the rock core simultaneously, influences coring rate and lithology and judges. In addition, in water-deficient and high-cold areas, the drilling fluid is difficult to prepare and has high cost.
A small amount of pneumatic down-the-hole hammers impact the wire line to core in the market, mostly vertical coring is carried out, the drilling distance is short, and the integrality of the rock core cannot be ensured.
In view of the above, there is a need for a core drill using compressed air as a conveying medium and a scouring medium to solve the problems in the prior art.
Disclosure of Invention
The invention aims to provide a core drill using compressed air as a conveying medium and a scouring medium, so as to solve the problem of coring of rock mass.
In order to achieve the purpose, the invention provides a core drill using compressed air as a conveying medium and a scouring medium, which comprises a coring device and an auxiliary device;
the auxiliary device comprises a drill rod and a positioning ring arranged in the drill rod;
the coring device comprises a rod body, a penetrating mechanism, a sealing ring and a suspension ring; the rod body is sleeved in the drill rod; a gas circulation channel is arranged in the rod body, and the side wall of the middle part of the rod body is provided with a gas hole which is communicated with the gas circulation channel; the penetrating mechanism is arranged in the rod body and used for controlling the opening and closing of the air hole and the air circulation channel; the sealing ring is sleeved on the rod body and used for ensuring the sealing property of the rod body and the drill rod; the hanging ring is connected at the end part of the rod body, and the hanging ring is propped against the positioning ring in the propelling process of the coring device.
Further, the rod body is sleeved with a guide mechanism for ensuring the propelling track of the coring device.
Furthermore, guiding mechanism includes a plurality of guide wheel subassemblies along body of rod circumferencial direction evenly distributed, and it has a plurality of mounting holes with guide wheel subassembly assorted to open on the axial plane of the body of rod, guide wheel subassembly sliding connection in the mounting hole.
Further, the guide wheel assembly comprises a guide wheel, a mounting seat and a spring; the leading wheel is installed on the mount pad, and in the mount pad slided the mounting hole of embedding body of rod, the spring both ends were contradicted in mount pad and mounting hole respectively.
Furthermore, an oil pot is arranged in the rod body and used for oil dripping lubrication in the advancing process of the coring device.
Further, be equipped with bullet card subassembly on the body of rod, bullet card subassembly includes along a plurality of bullet cards of body of rod circumferencial direction evenly distributed, is the umbelliform when bullet card subassembly is opened, is equipped with in the drilling rod with bullet card assorted bullet card room.
Furthermore, a centralizing ring is arranged in the drill rod to ensure the coaxiality of the drill rod.
Furthermore, the elastic clamping chamber, the positioning ring and the righting ring are sequentially arranged in the drill rod along the advancing direction of the coring device.
Further, the sealing ring is a lip seal.
Further, the pass-through mechanism comprises a ball valve core and a spring; one end of the spring is fixed in the rod body, the other end of the spring is connected with the spherical valve core, and the opening and the closing of the penetrating mechanism are controlled by the compression spring.
The technical scheme of the invention has the following beneficial effects:
(1) according to the invention, the lip seal is designed between the drill rod and the coring device, and the air pressure difference is formed between the front and the back of the coring device, so that the driving force is provided for the coring device, compressed air is used as a conveying medium and a scouring medium, the rock core and the core tube are protected, the waste gas of the down-the-hole hammer is prevented from blowing off the rock core, and powder slag is prevented from being accumulated between the hammer head and the core tube, so that the coring device cannot be pulled out. Compared with a flushing liquid as a flushing medium, the flushing liquid saves water resources and protects the environment.
(2) According to the invention, the penetrating mechanism is designed, the penetrating mechanism is opened through compressed air, so that the compressed air in the rod body reaches the rock breaking surface through the annular cavity gap between the outer wall of the coring device and the inner wall of the drill rod, and powder slag between the annular cavities is flushed, so that the compressed air is used as a flushing medium.
(3) According to the coring device, the guide mechanism is designed, the guide mechanism adopts a combination form of a plurality of springs and guide wheels, and the coring device can be effectively prevented from being blocked due to the deformation of the drill rod during the advancing process.
(4) In the invention, the oil pot is designed on the coring device and is used for oil dripping lubrication in the advancing process of the coring device, so that the advancing resistance is reduced, and the service life and the working efficiency of the coring device are improved.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of a core drill configuration;
the device comprises a drill rod 1, a drill rod 2, a positioning ring 3, a rod body 4, a penetrating mechanism 5, a sealing ring 6, a suspension ring 7, a guide mechanism 8, an oil pot 9, an elastic clamping component 10, an elastic clamping chamber 11, a centering ring 12 and a slag discharge channel.
Detailed Description
Embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways, which are defined and covered by the claims.
Example 1:
referring to fig. 1, a core drill using compressed air as a conveying medium and a scouring medium comprises a coring device and an auxiliary device; the auxiliary device comprises a drill rod 1 and a positioning ring 2 arranged in the drill rod 1; the coring device comprises a rod body 3, a penetrating mechanism 4, a sealing ring 5 and a suspension ring 6; the rod body 3 is sleeved in the drill rod 1; a gas circulation channel is arranged in the rod body 3, and the side wall of the middle part of the rod body 3 is provided with a gas hole which is communicated with the gas circulation channel; the penetrating mechanism 4 is arranged in the rod body 3 and used for controlling the opening and closing of the air hole and the air circulation channel; the sealing ring 5 is sleeved on the rod body 3 and used for ensuring the sealing property of the rod body 3 and the drill rod 1; hang ring 6 and connect at body of rod 3 tip, among the coring device propulsion process, hang ring 6 and holding ring 2 inconsistent.
The rod body 3 is sleeved with a guide mechanism 7 for ensuring the propelling track of the coring device; the coring device is prevented from being blocked due to the deformation of the drill rod in the advancing process. The guide mechanism 7 comprises a plurality of guide wheel assemblies which are uniformly distributed along the circumferential direction of the rod body 3, a plurality of mounting holes matched with the guide wheel assemblies are formed in the axial surface of the rod body 3, and the guide wheel assemblies are connected in the mounting holes in a sliding manner; the guide wheel assembly comprises a guide wheel, a mounting seat and a spring; the leading wheel is installed on the mount pad, and in the mount pad slided the mounting hole of embedding body of rod 3, the spring both ends were contradicted in mount pad and mounting hole respectively.
The penetrating mechanism 4 comprises a spherical valve core and a spring; one end of the spring is fixed in the rod body 3, the other end of the spring is connected with the spherical valve core, and the opening and the closing of the mechanism 4 are controlled by the compression spring.
An oil pot 8 is arranged in the rod body 3 and used for oil dripping lubrication in the propelling process of the coring device and reducing the advancing resistance. The improved drill rod is characterized in that an elastic clamping component 9 is arranged on the rod body 3, the elastic clamping component 9 comprises a plurality of elastic clamps which are uniformly distributed along the circumferential direction of the rod body 3, the elastic clamping component 9 is umbrella-shaped when opened, and an elastic clamping chamber 10 matched with the elastic clamps is arranged in the drill rod 1.
The drill rod 1 is internally provided with a righting ring 11, and the elastic clamping chamber 10, the positioning ring 2 and the righting ring 11 are sequentially arranged in the drill rod 1 along the advancing direction of the coring device.
The sealing ring 5 in this embodiment is preferably a lip seal.
The working principle of the core drill using compressed air as a conveying medium and scouring the medium is as follows:
when the coring device sent into, compressed air lasted to get into drilling rod 1, because the lip seal effect forms the atmospheric pressure difference around the coring device this moment, when gaseous effort was greater than the resistance, the coring device gos forward, and after the coring device hung ring 6 and touch holding ring 2 on the drilling rod, the card subassembly 9 that stops gos forward stops playing card room 10 automatic opening to the coring device hangs in the drilling rod. The air pressure will rise significantly at this point until the compressed air is turned on through the mechanism 4, the air pressure being constant, and the coring device being in place as determined by the change in air pressure.
During coring, compressed air passes through the mechanism 4 and reaches the rock breaking surface through the annular cavity gap between the outer wall of the coring device and the inner wall of the drill rod 1, powder slag between the annular cavities is washed, and the compressed air, the waste gas of the down-the-hole hammer and the powder slag are discharged from the slag discharge channel 12.
Above-mentioned one kind uses compressed air as the transport medium, erodees in the core drill tool of medium, has designed the lip between drilling rod and the coring device and has sealed, and coring device forms the atmospheric pressure difference around the front and back, provides drive power for coring device, realizes regard as transport medium and erode the medium with compressed air, has protected rock core and core barrel, prevents that down-the-hole hammer waste gas from blowing off the rock core, prevents that the dregs of powder from piling up between tup and core barrel, leads to coring device can't extract. Compared with a flushing liquid as a flushing medium, the flushing liquid saves water resources and protects the environment.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A core drill bit taking compressed air as a conveying medium and scouring the medium is characterized by comprising a core device and an auxiliary device;
the auxiliary device comprises a drill rod (1) and a positioning ring (2) arranged in the drill rod (1);
the coring device comprises a rod body (3), a penetrating mechanism (4), a sealing ring (5) and a suspension ring (6); the rod body (3) is sleeved in the drill rod (1); a gas circulation channel is arranged in the rod body (3), and a gas hole is formed in the side wall of the middle part of the rod body (3) and communicated with the gas circulation channel; the penetrating mechanism (4) is arranged in the rod body (3) and is used for controlling the opening and closing of the air hole and the air circulation channel; the sealing ring (5) is sleeved on the rod body (3) and used for ensuring the sealing property of the rod body (3) and the drill rod (1); the hanging ring (6) is connected at the end part of the rod body (3), and the hanging ring (6) is propped against the positioning ring (2) in the propelling process of the coring device.
2. Core drill with compressed air as the conveying medium and the flushing medium according to claim 1, characterized in that the rod body (3) is sleeved with a guide mechanism (7) for ensuring the advancing track of the coring device.
3. The core drill using compressed air as a conveying medium and a scouring medium as claimed in claim 2, wherein the guide mechanism (7) comprises a plurality of guide wheel assemblies uniformly distributed along the circumferential direction of the rod body (3), a plurality of mounting holes matched with the guide wheel assemblies are formed in the axial surface of the rod body (3), and the guide wheel assemblies are slidably connected in the mounting holes.
4. A core drill using compressed air as a conveying medium and a scouring medium as claimed in claim 3, wherein said guide wheel assembly comprises a guide wheel, a mounting seat and a spring; the leading wheel is installed on the mount pad, and in the mounting hole of the mount pad slip embedding body of rod (3), the spring both ends were contradicted in mount pad and mounting hole respectively.
5. The core drill using compressed air as a conveying medium and a scouring medium as claimed in any one of claims 1 to 4, characterized in that an oil can (8) is arranged in the rod body (3) and used for oil dripping lubrication in the advancing process of the coring device.
6. The core drill tool taking compressed air as a conveying medium and flushing the medium as claimed in claim 5, characterized in that the rod body (3) is provided with a spring clip assembly (9), the spring clip assembly (9) comprises a plurality of spring clips uniformly distributed along the circumferential direction of the rod body (3), the spring clip assembly (9) is umbrella-shaped when opened, and a spring clip chamber (10) matched with the spring clips is arranged in the drill rod (1).
7. Core drill with compressed air as the conveying medium and flushing medium according to claim 6, characterized in that a centralizing ring (11) is arranged in the drill rod (1).
8. Core drill tool with compressed air as the transport medium and flushing medium according to claim 7, characterized in that the snapping chamber (10), the positioning ring (2) and the righting ring (11) are arranged in the drill rod (1) in the advancing direction of the coring device.
9. A core drill with compressed air as the transport medium and flushing medium according to any of claims 6 to 8, characterized in that the sealing ring (5) is a lip seal.
10. Core drill with compressed air as the transport medium and flushing medium according to claim 9, characterized in that the passing means (4) comprise a ball valve core and a spring; one end of the spring is fixed in the rod body (3), the other end of the spring is connected with the spherical valve core, and the opening and the closing of the penetrating mechanism (4) are controlled by the compression spring.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202110194467.4A CN112943133B (en) | 2021-02-20 | 2021-02-20 | Core drill bit using compressed air as conveying medium and scouring medium |
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Application Number | Priority Date | Filing Date | Title |
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CN202110194467.4A CN112943133B (en) | 2021-02-20 | 2021-02-20 | Core drill bit using compressed air as conveying medium and scouring medium |
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CN112943133A true CN112943133A (en) | 2021-06-11 |
CN112943133B CN112943133B (en) | 2022-11-25 |
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CN202110194467.4A Active CN112943133B (en) | 2021-02-20 | 2021-02-20 | Core drill bit using compressed air as conveying medium and scouring medium |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113565431A (en) * | 2021-08-27 | 2021-10-29 | 中国铁建重工集团股份有限公司 | Pressure control method of air compressor for pneumatic down-the-hole hammer |
CN114562226A (en) * | 2022-02-28 | 2022-05-31 | 中国铁建重工集团股份有限公司 | Coring inner tube |
CN115234186A (en) * | 2022-08-12 | 2022-10-25 | 中国铁建重工集团股份有限公司 | Combined core drilling machine and working method thereof |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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US5494119A (en) * | 1994-07-12 | 1996-02-27 | Tully; Francis X. | Core sampling device |
CN104632073A (en) * | 2013-11-07 | 2015-05-20 | 大连市勘察测绘研究院有限公司 | Reverse circulation drilling method of hollow down-hole hammer |
CN110671067A (en) * | 2019-11-13 | 2020-01-10 | 吉林大学 | A device for detecting the dielectric properties of ice cores while drilling with polar air drilling |
CN111894502A (en) * | 2020-07-28 | 2020-11-06 | 四川大学 | Coring method in tunnel with gas as fluid medium |
CN112324334A (en) * | 2020-10-30 | 2021-02-05 | 中国地质大学(武汉) | Sealed pressure-feed type horizontal directional drilling engineering geological exploration continuous coring device |
-
2021
- 2021-02-20 CN CN202110194467.4A patent/CN112943133B/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5494119A (en) * | 1994-07-12 | 1996-02-27 | Tully; Francis X. | Core sampling device |
CN104632073A (en) * | 2013-11-07 | 2015-05-20 | 大连市勘察测绘研究院有限公司 | Reverse circulation drilling method of hollow down-hole hammer |
CN110671067A (en) * | 2019-11-13 | 2020-01-10 | 吉林大学 | A device for detecting the dielectric properties of ice cores while drilling with polar air drilling |
CN111894502A (en) * | 2020-07-28 | 2020-11-06 | 四川大学 | Coring method in tunnel with gas as fluid medium |
CN112324334A (en) * | 2020-10-30 | 2021-02-05 | 中国地质大学(武汉) | Sealed pressure-feed type horizontal directional drilling engineering geological exploration continuous coring device |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113565431A (en) * | 2021-08-27 | 2021-10-29 | 中国铁建重工集团股份有限公司 | Pressure control method of air compressor for pneumatic down-the-hole hammer |
CN114562226A (en) * | 2022-02-28 | 2022-05-31 | 中国铁建重工集团股份有限公司 | Coring inner tube |
CN114562226B (en) * | 2022-02-28 | 2024-03-12 | 中国铁建重工集团股份有限公司 | Coring inner tube |
CN115234186A (en) * | 2022-08-12 | 2022-10-25 | 中国铁建重工集团股份有限公司 | Combined core drilling machine and working method thereof |
CN115234186B (en) * | 2022-08-12 | 2024-02-27 | 中国铁建重工集团股份有限公司 | Combined coring drilling machine and working method thereof |
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CN112943133B (en) | 2022-11-25 |
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