CN110761727A - Coal mine wall drilling chip collecting device - Google Patents
Coal mine wall drilling chip collecting device Download PDFInfo
- Publication number
- CN110761727A CN110761727A CN201911210396.1A CN201911210396A CN110761727A CN 110761727 A CN110761727 A CN 110761727A CN 201911210396 A CN201911210396 A CN 201911210396A CN 110761727 A CN110761727 A CN 110761727A
- Authority
- CN
- China
- Prior art keywords
- dust collecting
- dust
- collecting device
- funnel
- coal mine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003245 coal Substances 0.000 title claims abstract description 25
- 238000005553 drilling Methods 0.000 title claims abstract description 23
- 239000000428 dust Substances 0.000 claims abstract description 71
- 238000005520 cutting process Methods 0.000 claims abstract description 20
- 238000000926 separation method Methods 0.000 claims description 3
- 229920002379 silicone rubber Polymers 0.000 claims 2
- 239000004945 silicone rubber Substances 0.000 claims 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 12
- 239000000741 silica gel Substances 0.000 abstract description 12
- 229910002027 silica gel Inorganic materials 0.000 abstract description 12
- 230000000903 blocking effect Effects 0.000 abstract description 5
- 239000002817 coal dust Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 239000011435 rock Substances 0.000 description 3
- 239000003818 cinder Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Images
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
- E21B21/015—Means engaging the bore entrance, e.g. hoods for collecting dust
-
- 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
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/005—Testing the nature of borehole walls or the formation by using drilling mud or cutting data
Landscapes
- 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)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The invention discloses a drilling cutting collecting device on a coal mine wall surface, which comprises a soft silica gel sheet, a dust collecting device, an exhaust pipe and a dust collecting funnel, wherein one side of the dust collecting device is connected with the soft silica gel sheet with a drilled hole, the other side of the dust collecting device is provided with a ball bearing which is concentric with the drilled hole, and the inner wall of the ball bearing is provided with a brush; the exhaust pipe is obliquely arranged at the top of the dust collecting device, a plurality of blocking pieces in an inclined state are arranged in the exhaust pipe in a staggered manner, and the blocking pieces are of an outwards bent arc-shaped structure; the bottom of the dust collecting device is connected with a dust collecting funnel with a wide upper part and a narrow lower part; the dust collecting device comprises a dust collecting cover and a dust collecting bag connected with the dust collecting cover through a dynamic ring; the bottom of the dust collecting bag is connected with the dust collecting funnel; the upper section of the dust collecting funnel is in an inverted frustum shape, the lower section of the dust collecting funnel is in a cylindrical shape, and the diameter of the lower section of the dust collecting funnel is the same as that of the lower surface of the upper section; the invention has the advantages of simple structure, reasonable design, light weight, convenient carrying, flexible use and low cost, and greatly improves the collection rate of drilling cuttings.
Description
Technical Field
The invention belongs to the technical field of coal mine safety, and particularly relates to a coal mine wall drilling cutting collecting device which is carried out in the prevention work of rock burst and gas outburst.
Background
The drilling cutting method is a method commonly used in mine rock burst and coal mine gas outburst prediction work. The method is an effective monitoring and early warning method in mines threatened by gas outburst disasters and rock burst disasters. In practice, the drilled coal dust must be collected. However, due to the reasons of roadway ventilation and the like, coal dust can fly everywhere, so that the coal dust is difficult to capture and cannot be completely collected, and the error of later prediction data is large.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a drilling cutting collecting device on the wall surface of a coal mine, which has the advantages of simple structure, reasonable design, light weight, convenience in carrying, flexibility in use and low cost, and the drilling cutting collecting rate is greatly improved.
In order to achieve the purpose, the invention provides a coal mine wall drilling cutting collecting device which comprises a soft silica gel sheet, a dust collecting device, an exhaust pipe and a dust collecting funnel, wherein one side of the dust collecting device is connected with the soft silica gel sheet with a drilled hole, the other side of the dust collecting device is provided with a ball bearing which is concentric with the drilled hole, the exhaust pipe is obliquely arranged at the top of the dust collecting device, a plurality of blocking pieces in an inclined state are arranged in the exhaust pipe in a staggered mode, and the bottom of the dust collecting device is connected with the dust collecting funnel which is wide at the top and narrow at the.
Preferably, the dust collecting device comprises a dust collecting cover and a dust collecting bag connected with the dust collecting cover through a dynamic ring;
preferably, the exhaust duct is obliquely arranged at the top of the dust hood;
preferably, the bottom of the dust bag is connected with a dust collecting funnel;
preferably, the upper section of the dust collecting funnel is in an inverted frustum shape, the lower section of the dust collecting funnel is in a cylindrical shape, and the diameter of the lower section of the dust collecting funnel is the same as that of the lower surface of the upper section;
preferably, the inner wall of the ball bearing is provided with a brush;
preferably, the blocking sheet is an arc-shaped structure which is bent outwards.
The invention provides a coal mine wall drilling cutting collecting device which has the following beneficial effects:
the invention effectively solves the technical problems that coal scraps can fly everywhere and can not be completely collected due to external factors such as ventilation and the like in the prior art, and the soft silica gel sheet, the dust collection cover, the dust collection bag and the dust collection funnel are combined together according to the specific connection relation to form the drilling cuttings collecting device on the wall surface of the coal mine. In addition, a small part of wind current is discharged from the ball bearing with the brush, the brush on the inner side of the ball bearing plays a role in dynamic sealing, the escape of coal dust carried by the wind current is prevented, the exhaust pipe is combined with the ball bearing, drilling cuttings are effectively prevented from overflowing, and the overall collection rate of the collection device is improved to a great extent.
Drawings
Fig. 1 is a schematic structural diagram of a coal mine wall drilling cutting collecting device provided by the invention.
In the figure:
1. soft silica gel sheet 11, drill hole 2, exhaust pipe 3, dust collecting cover 4, dust collecting bag 5, dust collecting funnel 6, ball bearing 7 and blocking piece.
Detailed Description
The present invention will be further described with reference to the following specific embodiments and accompanying drawings to assist in understanding the contents of the invention.
As shown in fig. 1, the device for collecting drill cuttings on the wall surface of a coal mine provided by the invention comprises a soft silica gel sheet 1, a dust collecting device, an exhaust pipe 2 and a dust collecting funnel 5. Dust collecting device one side is connected with the soft silica gel piece 1 that has drilling 11, the drilling 11 of soft silica gel piece 1 makes the rig pass through, use soft silica gel piece 1 can ensure that the coal wall of unevenness does not have the gap rather than the junction and hug closely the coal wall, guarantee that the coal cinder does not scatter, prevent to omit, the opposite side is equipped with the ball bearing 6 with the concentric setting of drilling, the 6 inner walls of ball bearing are equipped with the brush, realize dynamic seal, when not hindering the drilling rod pivoted, block the coal cinder with the brush and do not escape along with the air current. The exhaust pipe 22 is obliquely arranged at the top of the dust collecting device, a plurality of baffle sheets 7 in an inclined state are arranged in the exhaust pipe 2 in a staggered mode, and the baffle sheets 7 are of an outwards bent arc-shaped structure, so that coal dust is effectively prevented from being sprayed out from an exhaust outlet along with airflow. The bottom of the dust collecting device is connected with a dust collecting funnel 5 with a wide upper part and a narrow lower part. The dust collecting device comprises a dust collecting cover 3 and a dust collecting bag 4 connected with the dust collecting cover 3 through a dynamic ring, the exhaust pipe 2 is obliquely arranged at the top of the dust collecting cover 3, and the bottom of the dust collecting bag 4 is tightly connected with a dust collecting funnel 5. The upper section of the dust collecting funnel 5 is in an inverted circular truncated cone shape, the lower section is in a cylindrical shape, and the diameter of the lower section of the dust collecting funnel 5 is the same as that of the lower surface of the upper section.
The working principle of the invention is as follows: firstly, a drilling hole opening position is selected in a roadway, then a drill rod of a drilling machine is inserted from a ball bearing 6 with a brush, a drilling hole 11 is inserted from a soft silica gel sheet 1, the soft silica gel sheet 1 is tightly attached to the coal wall, so that coal powder has no gap and falls outside a dust collection bag 4, and a collection container for sampling drilling cuttings can be sleeved at the lower end of a dust collection funnel 5. When the drill bit begins to drill, partial wind current is discharged from exhaust pipe 2, and the separation blade 7 of outwards buckling intercepts partial coal dust that the wind current carried, because exhaust pipe 2 downward sloping inserts dust cover 3 and separation blade slope sets up in exhaust pipe 2, effectively prevents that the buggy from upwards flying out exhaust pipe 2 because of the air current effect for the coal dust of interception slides down along inclination, falls into collection funnel 5. In addition, a small part of wind current is discharged from the ball bearing 6 with the brush, the brush on the inner side of the ball bearing 6 plays a role in dynamic sealing, the escape of coal dust carried by the wind current is prevented, the exhaust pipe 2 is combined with the ball bearing 6, the drill cuttings are effectively prevented from overflowing, and the overall collection rate of the collection device is greatly improved.
The inventive concept is explained in detail herein using specific examples, which are given only to aid in understanding the core concepts of the invention. It should be understood that any obvious modifications, equivalents and other improvements made by those skilled in the art without departing from the spirit of the present invention are included in the scope of the present invention.
Claims (7)
1. The utility model provides a colliery wall drill chip collection system, its characterized in that includes soft silicone rubber piece, dust collecting device, exhaust pipe and collection dirt funnel, dust collecting device one side is connected with the soft silicone rubber piece that has drilling, the opposite side be equipped with the ball bearing of the concentric setting of drilling, the exhaust pipe slope sets up in the dust collecting device top, be provided with a plurality of separation blades that are the tilt state mutually in the exhaust pipe, the narrow collection dirt funnel is connected under dust collecting device bottom and the last width.
2. The device for collecting drill cuttings on the wall surface of a coal mine according to claim 1, wherein the dust collecting device comprises a dust hood and a dust bag connected with the dust hood through a dynamic ring.
3. The device for collecting cuttings on the wall surface of a coal mine according to claim 2, wherein the exhaust duct is obliquely arranged at the top of the dust hood.
4. The device for collecting cuttings on the wall surface of a coal mine according to claim 2, wherein the bottom of the dust bag is connected with a dust collecting funnel.
5. The device for collecting cuttings on the wall surface of a coal mine according to claim 4, wherein the upper section of the dust collecting funnel is in an inverted frustum shape, the lower section of the dust collecting funnel is in a cylindrical shape, and the diameter of the lower section of the dust collecting funnel is the same as that of the lower surface of the upper section.
6. The device for collecting cuttings on the wall surface of a coal mine according to claim 1, wherein a brush is arranged on the inner wall of the ball bearing.
7. The device for collecting cuttings from the wall of a coal mine according to claim 1, wherein the baffle is an outwardly bent arc-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911210396.1A CN110761727A (en) | 2019-11-29 | 2019-11-29 | Coal mine wall drilling chip collecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911210396.1A CN110761727A (en) | 2019-11-29 | 2019-11-29 | Coal mine wall drilling chip collecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110761727A true CN110761727A (en) | 2020-02-07 |
Family
ID=69340542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911210396.1A Pending CN110761727A (en) | 2019-11-29 | 2019-11-29 | Coal mine wall drilling chip collecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110761727A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114235480A (en) * | 2021-12-21 | 2022-03-25 | 上海应用技术大学 | Coal seam gas content negative pressure fixed point sampling method |
-
2019
- 2019-11-29 CN CN201911210396.1A patent/CN110761727A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114235480A (en) * | 2021-12-21 | 2022-03-25 | 上海应用技术大学 | Coal seam gas content negative pressure fixed point sampling method |
| CN114235480B (en) * | 2021-12-21 | 2023-12-22 | 上海应用技术大学 | Negative pressure fixed-point sampling method for gas content in coal bed |
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