CN113775305A - Coal mine gas extraction drilling dust falling device and using method thereof - Google Patents
Coal mine gas extraction drilling dust falling device and using method thereof Download PDFInfo
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- CN113775305A CN113775305A CN202111161257.1A CN202111161257A CN113775305A CN 113775305 A CN113775305 A CN 113775305A CN 202111161257 A CN202111161257 A CN 202111161257A CN 113775305 A CN113775305 A CN 113775305A
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- 239000000428 dust Substances 0.000 title claims abstract description 185
- 238000000605 extraction Methods 0.000 title claims abstract description 74
- 238000005553 drilling Methods 0.000 title claims abstract description 56
- 239000003245 coal Substances 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000010521 absorption reaction Methods 0.000 claims abstract description 16
- 239000002893 slag Substances 0.000 claims description 13
- 238000007664 blowing Methods 0.000 claims description 12
- 238000003780 insertion Methods 0.000 claims description 7
- 230000037431 insertion Effects 0.000 claims description 7
- 238000001179 sorption measurement Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 11
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000005507 spraying Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000002817 coal dust Substances 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 239000003818 cinder Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/01—Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
- E21B21/011—Dust eliminating or dust removing while drilling
-
- 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
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The invention discloses a dust falling device for coal mine gas extraction drill holes and a using method thereof, and discloses a dust falling device for sucking dust generated by drill holes and adsorbing the dust through dust suction balls and a using method thereof. Can avoid increasing the humid humidity and the pollution degree of operation environment, reduce the waste to the water resource, its characterized in that exhaust hood is rear side open structure, the opening part is arranged in to the ripple rubber sleeve cover, a plurality of fixed ear equidistance are arranged in on the exhaust hood outer wall, and be close to the exhaust hood rear side, the lateral wall is opened there is the drill bit patchhole before the exhaust hood, the lateral wall is opened before the exhaust hood has the drilling observation window, exhaust hood bottom and scum pipe are linked together, the filter bag is arranged in on the scum pipe through the staple bolt, exhaust hood top and dust absorption pipe one end are linked together, the exhaust hood top is arranged in to the air exhauster, and be linked together with the dust absorption pipe.
Description
Technical Field
The invention discloses a dust falling device for a coal mine gas extraction drill hole and a using method thereof, relates to a dust falling device for coal mine gas extraction drill holes, and belongs to the field of coal mine equipment. In particular to a dust falling device for sucking dust generated by drilling and adsorbing the dust through a dust sucking ball and a using method thereof.
Background
In a high gas mine and a coal and gas outburst mine, before coal mining, gas in coal bodies to be mined needs to be pre-extracted, usually, a drill is used for drilling a hole to a gas pre-extraction position on a working face, then the drill is extracted, a gas extraction pipe is inserted into the gas pre-extraction position along the drilled hole to extract the gas, in the drilling construction process, because the working face is usually hard, when the drill rotating at a high speed acts on the hard working face, a large amount of fragments are generated and a large amount of coal dust and dust are accompanied, when drilling, because the drilling condition needs to be observed by tightly focusing on the hole, usually, an operator is closer to the drilled hole, a large amount of dust affects the health of the operator and also affects the sight of the operator, the existing drilling dust-settling device usually performs dust-settling treatment on the dust generated by drilling through water spraying, but this kind of dust fall mode makes the coal dust that produces, dust and water smoke combine direct unrestrained in the operational environment of coal mining, lead to operational environment more moist abominable to because the dust that the drilling produced can unrestricted direction the diffusion, need be on a large scale, long-time continuous spraying dust fall, waste water resource and the humidity degree of the regional environment of heavier operation relatively, the sediment stone that still produces the drilling scatters on ground, also can carry out the operation of other operations to the staff and cause certain influence.
The publication No. CN112647875A discloses a device for dust fall and gas collection at a drill hole orifice, which comprises a water injection pipeline, a dust fall device, a gas collection tank and an air extraction pipeline, wherein a drilling machine, a drill rod mechanism and the air collection tank are matched, the air extraction pipeline is connected with the gas collection tank, the bottom of the gas collection tank is also provided with a slag discharge mechanism, the air extraction pipeline comprises a connecting pipe and an air extraction pipe, the connecting pipe is connected with the upper end of the gas collection tank and a filter water tank, the air extraction pipe is connected with the upper cover of the filter water tank and the gas extraction pipeline, a sealed capsule is also arranged at the drill hole orifice drilled by the drilling machine and the drill rod mechanism, the dust fall of the device for drilling construction is realized by spraying dust fall, the dust fall is realized by combining coal dust, dust and water mist, the generated by the dust fall mode is directly sprayed into the working environment of coal mining, the working environment is more humid and severe, the dust fall and the dust fall are required to be continuously sprayed for a long time, the waste is realized, and the generated coal slag and the sewage water resource is directly discharged on the ground, the operation of other operations performed by the staff is influenced to a certain extent.
Notice No. CN210105912U discloses a gas drainage drilling drill way dust fall system in pit, includes: the dust collector is a container without a cover, one side of the dust collector is horizontally provided with a through hole in a horizontal manner and is attached to a front holder of the drilling machine, the other side of the dust collector is provided with a dust suction port and is attached to a coal wall, a drill bit penetrates through the through hole to drill a hole in the coal wall, and the dust collector is used for collecting dust generated in drilling; axial fan passes through the pipeline and gathers dirt ware intercommunication, the dust suppression case communicates with axial fan each other through the pipeline, the dust suppression case is used for carrying out the dust fall to the dust of coming from axial fan and handles, this drilling dust fall system carries out the dust fall through the spraying through gathering the dust, sewage and cinder direct discharge after the dust fall of this kind of mode, can lead to operational environment more moist abominable, certain influence is caused in the operation that other operations also can be carried out to the staff to exhaust cinder, and need long-time lasting the dust fall of spraying, the water resource is wasted to the comparison.
Disclosure of Invention
In order to improve the situation, the invention provides a coal mine gas extraction drilling dust-settling device and a using method thereof, and provides the dust-settling device for sucking dust generated by drilling and adsorbing the dust through a dust-absorbing ball and the using method thereof. The humidity and the pollution degree of the operation environment can be avoided being increased, and the waste of water resources is reduced.
The invention relates to a coal mine gas extraction drilling dust fall device, which is realized as follows: the invention relates to a dust-settling device for a coal mine gas extraction drill hole, which consists of a suction device and an adsorption device, wherein the suction device consists of an air extractor, a dust absorption pipe, a filter bag, a hoop, an air extraction cover, a drill bit insertion hole, fixing lugs, a corrugated rubber sleeve, a drill hole observation window and a deslagging pipe, the air extraction cover is of a rear-side opening structure, the corrugated rubber sleeve is sleeved at an opening, the fixing lugs are equidistantly arranged on the outer wall of the air extraction cover and are close to the rear side of the air extraction cover, the front side wall of the air extraction cover is provided with the drill bit insertion hole, the front side wall of the air extraction cover is provided with the drill hole observation window, the bottom of the air extraction cover is communicated with the deslagging pipe, the filter bag is arranged on the deslagging pipe through the hoop, the top of the air extraction cover is communicated with one end of the dust absorption pipe, the air extractor is arranged at the top of the air extraction cover and is communicated with the dust absorption pipe, and the adsorption device consists of an upper air outlet pipe, a dust-settling channel, a ball placing cover plate, a dust-settling observation window, a filter screen, a dust-settling filter screen and an adsorption device, The dust collection device comprises a dust collection ball and a blowing pipe, wherein the other end of the dust collection pipe is communicated with the left side of a dust falling channel, the communicated part is close to the top of the dust falling channel, the height of the dust falling channel is lower than that of an air exhaust cover, the top of the dust falling channel is communicated with an air outlet pipe, a filter screen is arranged in the air outlet pipe, a ball placing through groove is formed in the right side of the dust falling channel, the ball placing through groove is close to the top of the dust falling channel, one end of a ball placing cover plate is hinged to one side wall of the ball placing through groove, the other end of the ball placing cover plate is provided with a rubber pad, a handle is arranged on the ball placing cover plate, a volleyball through groove is formed in the right side of the dust falling channel, the volleyball through groove is close to the bottom of the dust falling channel, one end of the volleyball cover plate is hinged to one side wall of the volleyball through groove, the other end of the volleyball cover plate is provided with the rubber pad, the handle is arranged on the volleyball cover plate, the dust falling channel is provided with a dust falling observation window, the blower is arranged on the outer wall of the left side of the dust falling channel and is close to the bottom of the dust falling channel, one end of the blowpipe is communicated with the blower, the other end of the blowpipe extends into the dust falling channel, the other end of the blowpipe is parallel to the bottom of the dust falling channel, the inner diameter of the blowpipe is gradually increased from one end to the other end, a sealing gasket is arranged between the blowpipe and the dust falling channel, the dust suction balls are arranged in the dust falling channel, and the surface of the inner wall of the dust falling channel is a smooth surface;
furthermore, a guide plate is communicated with the dust collection pipe in the dust fall channel, the guide plate is an arc-shaped plate, and the surface of the guide plate is a smooth surface;
the invention also relates to a use method of the coal mine gas extraction drilling dust-settling device, which is characterized by comprising the following steps of:
1) the air exhaust cover is fixed at the drilling positioning position in the coal mine tunnel through the fixing lugs;
2) opening a ball placing cover plate, and placing a plurality of dust collection balls into the dust falling channel;
3) then the drill bit is inserted into the drill bit insertion hole and inserted at the drilling positioning position;
4) the air extractor is powered on, the drilling machine and the air extractor are started simultaneously, large gravels and the like generated by drilling enter the filter bag through the slag discharge pipe at the bottom of the air extraction cover, and light dust enters the dust fall channel through the dust suction pipe under the action of the air extractor;
5) the blower is switched on, the blower is started, works, blows the dust absorption ball through the blowing pipe to circularly roll in the dust fall channel, and fully absorbs dust;
6) observing the dust-falling condition through a dust-falling observation window;
7) after the dust absorption balls completely absorb dust in the dust falling channel, opening a volleyball cover plate, and taking out the dust absorption balls;
it should be noted that, the terms "upper", "lower", "left" and "right" in the present invention are based on the terms "upper", "lower", "left" and "right" in fig. 1.
Has the beneficial effects.
Firstly, the humidity and the pollution degree of the working environment can be prevented from being increased.
And secondly, the waste of water resources can be reduced.
And thirdly, the dust absorption ball after dust fall can be cleaned and reused.
And fourthly, through the arrangement of the filter bag, the coal slag or the slag stone generated by drilling is prevented from scattering on the ground to influence the normal work of the operating personnel.
Fifthly, the structure is simple, and the device is convenient and practical.
Sixthly, the cost is low, and the popularization is convenient.
Drawings
FIG. 1 is a three-dimensional structure diagram of a coal mine gas extraction borehole dust-settling device of the invention;
fig. 2 is a three-dimensional structure diagram of the coal mine gas extraction borehole dust-settling device, which only shows the internal structure of the extraction hood;
FIG. 3 is a schematic structural diagram of a dust fall channel of the coal mine gas extraction drilling dust fall device;
fig. 4 is a schematic structural diagram of an embodiment 2 of the coal mine gas extraction borehole dust settling device.
In the attached drawings
Wherein the method comprises the following steps: the dust-removing dust-collecting device comprises an air extractor (1), a dust-collecting pipe (2), an upper air outlet pipe (3), a dust-collecting channel (4), a ball-placing cover plate (5), a volleyball cover plate (6), a dust-collecting observation window (7), a blower (8), a filter bag (9), a hoop (10), an air extracting cover (11), a drill bit inserting hole (12), a fixing lug (13), a corrugated rubber sleeve (14), a drilling observation window (15), a slag-discharging pipe (16), a filter screen (17), a dust-collecting ball (18), a blowing pipe (19) and a guide plate (20).
The specific implementation mode is as follows:
example 1
The invention relates to a coal mine gas extraction drilling dust fall device, which is realized as follows: the invention relates to a dust falling device for a coal mine gas extraction drill hole, which consists of a suction device and an adsorption device, wherein the suction device consists of an air extractor (1), a dust absorption pipe (2), a filter bag (9), a hoop (10), an air extraction cover (11), a drill bit inserting hole (12), fixing lugs (13), a corrugated rubber sleeve (14), a drill hole observation window (15) and a slag discharge pipe (16), the air extraction cover (11) is of a rear side open structure, the corrugated rubber sleeve (14) is sleeved at the opening, a plurality of fixing lugs (13) are equidistantly arranged on the outer wall of the air extraction cover (11) and are close to the rear side of the air extraction cover (11), the drill bit inserting hole (12) is arranged on the front side wall of the air extraction cover (11), the drill hole observation window (15) is arranged on the front side wall of the air extraction cover (11), the bottom of the air extraction cover (11) is communicated with the slag discharge pipe (16), the filter bag (9) is arranged on the slag discharge pipe (16) through the hoop (10), the top of the air exhaust cover (11) is communicated with one end of a dust suction pipe (2), the top of the air exhaust cover (11) is arranged in the air exhauster (1) and is communicated with the dust suction pipe (2), the adsorption device consists of an upper air outlet pipe (3), a dust fall channel (4), a ball placing cover plate (5), a volleyball cover plate (6), a dust fall observation window (7), a blower (8), a filter screen (17), a dust suction ball (18) and a blowing pipe (19), the other end of the dust suction pipe (2) is communicated with the left side of the dust fall channel (4), the communicated part is close to the top of the dust fall channel (4), the height of the dust fall channel (4) is lower than that of the air exhaust cover (11), the top of the dust fall channel (4) is communicated with the air outlet pipe, the filter screen (17) is arranged in the air outlet pipe, a ball placing through groove is formed in the right side of the dust fall channel (4), the ball placing through groove is close to the top of the dust fall channel (4), one end of the ball placing cover plate (5) is hinged to one side of the ball placing through groove, the other end and put ball and lead to groove other side wall joint, put ball apron (5) other end and put the rubber pad, put ball apron (5) overhead has the handle, dust fall passageway (4) right side is opened there is volleyball logical groove, volleyball logical groove is close to dust fall passageway (4) bottom, volleyball apron (6) one end and volleyball logical groove side wall are articulated, the other end and the joint of exhaust logical groove other side wall, volleyball apron (6) other end has the rubber pad, volleyball apron (6) overhead has the handle, and dust fall passageway (4) are gone up and are opened dust fall observation window (7), and on dust fall passageway (4) left side outer wall was placed in to hair-blower (8), and be close to dust fall passageway (4) bottom, and blow pipe (19) one end and hair-blower (8) are linked together, and the other end extends to in dust fall passageway (4), blow pipe (19) other end and dust fall passageway (4) bottom are parallel, the inner diameter of the blowpipe (19) is gradually increased from one end to the other end, a sealing gasket is arranged between the blowpipe (19) and the dust falling channel (4), a plurality of dust suction balls (18) are arranged in the dust falling channel (4), and the inner wall surface of the dust falling channel (4) is a smooth surface;
the dust suction ball (18) is preferably a soaked sponge ball;
the application method of the coal mine gas extraction drilling dust-settling device comprises the following steps:
1) the air extraction cover (11) is fixed at the drilling position in the coal mine roadway through the fixing lug (13);
2) opening a ball placing cover plate (5), and placing a plurality of dust suction balls (18) into the dust falling channel (4);
3) then, the drill bit is inserted into the drill bit insertion hole (12) and inserted at the drilling positioning position;
4) the air extractor (1) is powered on, the drilling machine and the air extractor (1) are started simultaneously, large gravels and the like generated by drilling enter the filter bag (9) through the slag discharge pipe (16) at the bottom of the air extraction cover (11), and light dust enters the dust fall channel (4) through the dust collection pipe (2) under the action of the air extractor (1);
5) the blower (8) is powered on, the blower (8) is started, the blower (8) works, and the dust suction ball (18) is blown by the blowing pipe (19) to circularly roll in the dust falling channel (4) so as to fully adsorb dust;
6) the dust fall condition is observed through a dust fall observation window (7);
7) after the dust absorption balls (18) absorb the dust in the dust falling channel (4), the volleyball cover plate (6) is opened, and the dust absorption balls (18) are taken out;
example 2
This example differs from example 1 in that: a guide plate (20) is communicated with the dust collection pipe (2) in the dust fall channel (4), the guide plate (20) is an arc-shaped plate, and the surface of the guide plate (20) is a smooth surface; when in use, the air flow in the dust collection pipe (2) can be prevented from influencing the circular motion of the dust collection ball (18);
the design of the corrugated rubber sleeve (14) can enable the air extraction cover (11) to adapt to the uneven inner wall of the roadway, so that the air extraction cover (11) is attached to the inner wall of the roadway more tightly;
the design that the front side wall of the air extraction cover (11) is provided with a drilling observation window (15) enables an operator to observe the working condition of the drill bit through the observation window;
the dust falling channel (4) is lower than the air extraction cover (11), so that dust can conveniently enter the dust falling channel (4);
the upper air outlet pipe (3) is internally provided with a filter screen (17), so that dust in the dust falling channel (4) can be prevented from overflowing through the air outlet pipe;
the design that the rubber pad is arranged at the other end of the ball placing cover plate (5) can increase the friction force between the ball placing cover plate (5) and the ball placing through groove and increase the connection stability of the ball placing cover plate (5);
the rubber pad is arranged at the other end of the volleyball cover plate (6), so that the friction force between the volleyball cover plate (6) and the volleyball channel can be increased, and the connection stability of the volleyball cover plate (6) is improved;
the other end of the blowing pipe (19) is parallel to the bottom of the dust falling channel (4), so that the dust suction ball (18) can circularly roll along the dust falling channel (4);
the inner diameter of the blowing pipe (19) is gradually increased from one end to the other end, so that the blowing area of the airflow can be increased, and a dead angle area is avoided;
the inner wall surface of the dust falling channel (4) is designed to be a smooth surface, so that the dust suction balls (18) can roll more smoothly;
the purposes of sucking the dust generated by drilling and adsorbing the dust through the dust suction ball (18) are achieved.
Claims (10)
1. The application method of the coal mine gas extraction drilling dust settling device is characterized by comprising the following steps
1) The air exhaust cover is fixed at the drilling positioning position in the coal mine tunnel through the fixing lugs;
2) opening a ball placing cover plate, and placing a plurality of dust collection balls into the dust falling channel;
3) then the drill bit is inserted into the drill bit insertion hole and inserted at the drilling positioning position;
4) the air extractor is powered on, the drilling machine and the air extractor are started simultaneously, large gravels and the like generated by drilling enter the filter bag through the slag discharge pipe at the bottom of the air extraction cover, and light dust enters the dust fall channel through the dust suction pipe under the action of the air extractor;
5) the blower is switched on, the blower is started, works, blows the dust absorption ball through the blowing pipe to circularly roll in the dust fall channel, and fully absorbs dust;
6) observing the dust-falling condition through a dust-falling observation window;
7) and after the dust absorption balls completely absorb the dust in the dust falling channel, opening the volleyball cover plate and taking out the dust absorption balls.
2. The use method of the coal mine gas extraction drilling dust-settling device according to claim 1, wherein the coal mine gas extraction drilling dust-settling device comprises a suction device and an adsorption device, the suction device comprises an air extractor, a dust suction pipe, a filter bag, a hoop, an air extraction cover, a drill bit insertion hole, fixing lugs, a corrugated rubber sleeve, a drilling observation window and a slag discharge pipe, the air extraction cover is of a rear-side open structure, the corrugated rubber sleeve is sleeved at the opening, the fixing lugs are equidistantly arranged on the outer wall of the air extraction cover and close to the rear side of the air extraction cover, the drill bit insertion hole is formed in the front side wall of the air extraction cover, the drilling observation window is formed in the front side wall of the air extraction cover, the bottom of the air extraction cover is communicated with the slag discharge pipe, the filter bag is arranged on the slag discharge pipe through the hoop, the top of the air extraction cover is communicated with one end of the dust suction pipe, the air extractor is arranged at the top of the air extraction cover and is communicated with the dust suction pipe, and the adsorption device comprises an upper air outlet pipe, The dust-settling device comprises a dust-settling channel, a ball-placing cover plate, a volleyball cover plate, a dust-settling observation window, a blower, a filter screen, a dust-absorbing ball and a blowing pipe, wherein the other end of the dust-absorbing pipe is communicated with the left side of the dust-settling channel, the communicated part is close to the top of the dust-settling channel, the top of the dust-settling channel is communicated with the outlet pipe, the outlet pipe is internally provided with the filter screen, the right side of the dust-settling channel is provided with a ball-placing through groove, the ball-placing through groove is close to the top of the dust-settling channel, one end of the ball-placing cover plate is hinged with one side wall of the ball-placing through groove, the other end of the ball-placing cover plate is clamped with the other side wall of the ball-placing through groove, the right side of the dust-settling channel is provided with a volleyball through groove, the volleyball through groove is close to the bottom of the dust-settling channel, one end of the volleyball cover plate is hinged with one side wall of the volleyball through groove, the other end of the exhaust through groove is clamped with the other side wall of the air-discharging through groove, the volleyball cover plate is provided with a rubber pad, the volleyball cover plate, the handle is provided with the dust-settling observation window, on dust fall passageway left side outer wall was arranged in to the hair-dryer, and was close to dust fall passageway bottom, blow pipe one end and hair-dryer were linked together, and in the other end extended to the dust fall passageway, a plurality of dust absorption balls were arranged in the dust fall passageway.
3. The use method of the coal mine gas extraction drilling dust falling device according to claim 2, characterized in that a guide plate is arranged in the dust falling channel and communicated with the dust collection pipe, the guide plate is an arc-shaped plate, the surface of the guide plate is a smooth surface, and when the device is used, the air flow in the dust collection pipe can be prevented from influencing the circular motion of the dust collection ball.
4. The use method of the coal mine gas extraction drilling dust-settling device according to claim 2 or 3, wherein the inner wall surface of the dust-settling channel is a smooth surface.
5. The use method of the coal mine gas extraction drilling dust settling device according to claim 4, wherein the height of the dust settling channel is lower than that of the extraction hood.
6. The use method of the coal mine gas extraction drilling dust-settling device according to claim 2, characterized in that the other end of the blowing pipe is parallel to the bottom of the dust-settling channel, and the inner diameter of the blowing pipe gradually increases from one end to the other end.
7. The use method of the coal mine gas extraction drilling dust settling device according to claim 2, wherein the dust suction ball is a soaked sponge ball.
8. The use method of the coal mine gas extraction drilling dust reduction device according to claim 2, characterized in that the design of the corrugated rubber sleeve enables the extraction hood to adapt to the rugged tunnel inner wall, so that the extraction hood and the tunnel inner wall are attached more tightly.
9. The use method of the coal mine gas extraction drilling dust reduction device according to claim 2, characterized in that a drilling observation window is arranged on the front side wall of the extraction hood, so that an operator can observe the working condition of a drill through the observation window.
10. The use method of the coal mine gas extraction drilling dust reduction device according to claim 2, characterized in that a rubber pad is arranged at the other end of the ball placing cover plate, so that friction between the ball placing cover plate and the ball placing through groove can be increased, and the connection stability of the ball placing cover plate is increased.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111161257.1A CN113775305A (en) | 2021-09-30 | 2021-09-30 | Coal mine gas extraction drilling dust falling device and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111161257.1A CN113775305A (en) | 2021-09-30 | 2021-09-30 | Coal mine gas extraction drilling dust falling device and using method thereof |
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| CN113775305A true CN113775305A (en) | 2021-12-10 |
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| CN202111161257.1A Pending CN113775305A (en) | 2021-09-30 | 2021-09-30 | Coal mine gas extraction drilling dust falling device and using method thereof |
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