CN112282677B - Outburst-prevention drilling ring type orifice spray dust removal device - Google Patents
Outburst-prevention drilling ring type orifice spray dust removal device Download PDFInfo
- Publication number
- CN112282677B CN112282677B CN202011296198.4A CN202011296198A CN112282677B CN 112282677 B CN112282677 B CN 112282677B CN 202011296198 A CN202011296198 A CN 202011296198A CN 112282677 B CN112282677 B CN 112282677B
- Authority
- CN
- China
- Prior art keywords
- ring
- water inlet
- spraying
- inlet pipe
- spray
- 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.)
- Active
Links
- 239000007921 spray Substances 0.000 title claims abstract description 63
- 238000005553 drilling Methods 0.000 title claims abstract description 33
- 239000000428 dust Substances 0.000 title claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 72
- 238000005507 spraying Methods 0.000 claims abstract description 68
- 230000001681 protective effect Effects 0.000 claims abstract description 11
- 230000002265 prevention Effects 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims 2
- 239000003245 coal Substances 0.000 description 24
- 238000005065 mining Methods 0.000 description 19
- 239000002817 coal dust Substances 0.000 description 14
- 230000000694 effects Effects 0.000 description 10
- 239000003595 mist Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 210000001503 joint Anatomy 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Nozzles (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses an outburst-prevention drilling ring type orifice spray dust removal device which comprises a fixed rod, a water inlet pipe, a protection ring and a spray ring, wherein the spray ring is in a ring pipe shape, and a plurality of spray holes are formed in the inner side surface of the spray ring at equal intervals along the circumferential direction of the spray ring; a water inlet pipe and a fixed rod are arranged on one side of the spraying ring, the spraying ring is communicated with one end of the water inlet pipe, and the other end of the water inlet pipe is communicated with a water inlet pipeline; the fixed rods are provided with a plurality of fixed rods arranged along the circumferential direction of the spraying ring, one end of each fixed rod is fixedly connected with the side surface of the spraying ring, the fixed rods are provided with a plurality of protective rings for preventing the drill rods from being contacted with the water inlet pipe and the spraying ring, and the fixed rods are fixedly connected with the outer side surface of the protective rings; when the drill rod is used, one end of the drill rod sequentially penetrates through the protective ring and the spraying ring to perform drilling operation.
Description
Technical Field
The invention relates to the field of coal mining, in particular to an outburst-prevention drilling ring type orifice spray dust removal device.
Background
At present, before underground coal mine excavation, outburst-prevention drill holes need to be drilled for gas drainage operation; when the outburst prevention drill hole is drilled, a large amount of coal dust can be generated along with the continuous penetration of the drill rod, the working environment of workers can be deteriorated due to the coal dust, and the body health of coal mine workers is seriously damaged; the drilling dust removal equipment in the prior art mainly adsorbs coal dust and falls dust outside the drill hole, has a relatively poor dust removal effect, cannot meet the dust removal requirement of coal mining, has a relatively high cost, and seriously increases the economic cost of coal mining, so that a drilling dust removal device which improves the dust removal effect and reduces the economic cost is required to be developed to solve the problems.
Disclosure of Invention
The invention aims to solve the problems and provides the outburst-prevention drilling ring type orifice spray dust removal device which is simple in structure and improves the dust removal effect.
In order to achieve the purpose, the technical scheme of the invention is as follows:
an outburst-prevention drilling ring type orifice spray dust removal device comprises a fixed rod, a water inlet pipe, a protection ring and a spray ring, wherein the spray ring is in an annular tubular shape, and a plurality of spray holes are formed in the inner side surface of the spray ring at equal intervals along the circumferential direction of the spray ring; a water inlet pipe and a fixed rod are arranged on one side of the spraying ring, the spraying ring is communicated with one end of the water inlet pipe, and the other end of the water inlet pipe is communicated with a water inlet pipeline; the fixed rods are provided with a plurality of fixed rods arranged along the circumferential direction of the spraying ring, one end of each fixed rod is fixedly connected with the side surface of the spraying ring, the fixed rods are provided with a plurality of protective rings for preventing the drill rods from being contacted with the water inlet pipe and the spraying ring, and the fixed rods are fixedly connected with the outer side surface of the protective rings; when the drill rod is used, one end of the drill rod sequentially penetrates through the protective ring and the spraying ring to perform drilling operation.
Furthermore, the spraying ring and the water inlet pipe are made of metal, one side of the spraying ring is fixedly connected with one end of the water inlet pipe, and the spraying ring is communicated with the water inlet pipe.
Furthermore, one end of the water inlet pipe, which is far away from the spraying ring, is provided with a water pipe joint and is detachably connected with the water inlet pipeline through the water pipe joint; one side of the water inlet pipe close to the guard ring is fixedly connected with the outer side surface of the guard ring.
Furthermore, the number of the protection rings is two, the two protection rings are respectively a first protection ring and a second protection ring, the first protection ring is sleeved on the inner side of the spraying ring, the outer side surface of the first protection ring is fixedly connected with the inner side surface of the spraying ring, a plurality of through holes are arranged on the inner side surface of the first protection ring at equal intervals along the circumferential direction of the first protection ring, and the through holes are arranged corresponding to the spraying holes arranged on the inner side surface of the spraying ring; the second guard ring sets up between dead lever and inlet tube, the middle part side fixed connection of second guard ring lateral wall and dead lever, inlet tube.
Furthermore, the fixed rod is one, and the fixed rod and the water inlet pipe are correspondingly arranged at two ends of the spraying ring.
Further, the guard ring is made of copper metal.
Further, the axial direction of the plurality of spray holes is consistent with the radial direction of the spray ring.
Further, one side of spraying ring is provided with connection gap, and the both ends that spraying ring lies in connection gap all seal, be provided with the installed part in the connection gap and through installed part and dead lever fixed connection.
Furthermore, the front side surface and the rear side surface of the mounting piece are respectively provided with a connecting groove and are in scarf joint with the two ends of the spraying ring positioned in the connecting notch through the connecting grooves, and one side of the mounting piece is provided with a mounting groove and is in scarf joint with one end of the fixing rod through the mounting groove; the outer side surface of the mounting piece is arc-shaped, and the bending radian of the outer side surface of the mounting piece is consistent with that of the outer side surface of the spraying ring.
Furthermore, an atomizing nozzle is fixedly connected in the spraying hole.
Compared with the prior art, the invention has the advantages and positive effects that:
when the coal mine dust removal device is used, firstly, a placing drill hole with the outer diameter matched with that of the spray ring is drilled in a drill hole area by using drilling equipment, then the spray ring, the fixing rod and the water inlet pipe are all inserted into the placing drill hole, finally, the water supply pipeline is communicated with the water inlet pipe, and then the drilling operation can be carried out, when the hole is drilled, one end of the drill rod sequentially penetrates through the protection ring and the spray ring to carry out the drilling operation, at the moment, the spray hole in the inner side surface of the spray ring can spray water in the water supply pipeline, covering type water mist is formed on the outer side of the drill rod, the water mist can block coal dust generated in the drill hole and realize the coal dust settling operation, the coal dust is prevented from overflowing from the drill hole, the dust removal operation in the drill hole is realized, the situation that the coal dust is dispersed from the drill hole and is difficult to remove dust is caused is avoided, the dust removal effect of the coal mining operation is effectively improved, meanwhile, the coal mine dust removal device is simple in structure and low in production cost, the economic cost is reduced to a certain extent, the use requirement of the coal mining operation can be completely met, and the coal mining operation has excellent market popularization value.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a view showing a construction of the connection of the present invention to a drill pipe;
FIG. 3 is an assembled block diagram of the present invention;
FIG. 4 is a block diagram of the spray ring and mounting assembly;
FIG. 5 is a schematic view of a first guard ring;
fig. 6 is a diagram illustrating the effect of the present invention in performing a drilling operation.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments of the present invention, should be included in the protection scope of the present invention.
As shown in fig. 1 to 6, the embodiment discloses an outburst-prevention drilling ring type orifice spray dust removal device, which includes a fixing rod 3, a water inlet pipe 2, a first protection ring 7, a second protection ring 4 and a spray ring 1, wherein the spray ring 1 is in a ring pipe shape, and a plurality of spray holes 101 are arranged on the inner side surface of the spray ring 1 at equal intervals along the circumferential direction of the spray ring 1; a water inlet pipe 2 and a fixing rod 3 are arranged on one side of the spraying ring 1, the spraying ring 1 and the water inlet pipe 2 are both made of metal, one side of the spraying ring 1 is welded with one end of the water inlet pipe 2, and the spraying ring 1 is communicated with the water inlet pipe 2; one end of the water inlet pipe 2, which is far away from the spraying ring 1, is provided with a water pipe connector 201 and is detachably connected with a water inlet pipeline through the water pipe connector 201;
the water curtain can be formed on the inner side surface of the spray ring by simultaneously spraying water from the plurality of spray holes, so that coal dust can be effectively prevented from overflowing from the drill holes, and a good dust removal effect is achieved;
the fixed rod 3 is arranged corresponding to the water inlet pipe 2, and one end of the fixed rod 3 is fixedly connected with one side of the spraying ring 1;
one side of spraying ring 1 is provided with connection gap, and spraying ring 1 is located connection gap's both ends and all seals, be provided with installed part 8 in the connection gap and through installed part 8 and 3 fixed connection of dead lever.
The front side and the rear side of the mounting piece 8 are both provided with a connecting groove 801 and are embedded with the two ends of the spraying ring 1 positioned in the connecting gap through the connecting grooves 801, and one side of the mounting piece 8 is provided with a mounting groove 802 and is embedded with one end of the fixed rod 3 through the mounting groove 802; the inner side and the outer side of the mounting part 8 are arc-shaped, and the bending radians of the inner side and the outer side of the mounting part 8 are consistent with those of the inner side and the outer side of the spray ring 1.
The design of installed part has made things convenient for being connected between spraying ring and the dead lever, has improved the assembly efficiency between spraying ring and the dead lever simultaneously to it can make and form stable bearing structure between spraying ring and the dead lever, has guaranteed that the fixed lever has stable support effect to spraying ring.
A first protection ring 7 and a second protection ring 4 which are used for preventing a drill rod 5 from touching the water inlet pipe 2 and the spray ring 1 are arranged between the fixing rod 3 and the water inlet pipe 2, the first protection ring 7 is sleeved on the inner side of the spray ring 1, the outer side surface of the first protection ring 7 is welded with the inner side surface of the spray ring 1, a plurality of through holes 701 are arranged on the inner side surface of the first protection ring 7 at equal intervals along the circumferential direction of the first protection ring 7, and the through holes 701 are arranged corresponding to the spray holes 101 arranged on the inner side surface of the spray ring 1;
the second guard ring 4 sets up between dead lever 3 and inlet tube 2, and 4 lateral walls of second guard ring are connected with dead lever 3, the middle part side fixed connection of inlet tube 2. When the drill rod is used, one end of the drill rod 5 sequentially passes through the second protective ring 4 and the first protective ring 7 to perform drilling operation.
The first protection ring and the second protection ring mainly play a role in protecting the spray ring and the water inlet pipe, so that the condition that the spray ring and the water inlet pipe are damaged due to collision of the drill rod with the spray ring and the water inlet pipe during drilling operation is avoided, and the service life of the drilling machine is prolonged.
The first guard ring 7 and the second guard ring 4 are both made of copper. The design ensures that sparks cannot be generated when the drill rod collides with the first protection ring and the second protection ring, avoids the condition of gas explosion caused by sparks generated when the drill rod collides with the first protection ring and the second protection ring during drilling, and improves the using effect of the invention.
Eight spraying holes 101 are formed, eight penetrating through holes 701 are correspondingly formed, the axis of each spraying hole 101 is coincided with the axis of each penetrating through hole 701, and the directions of the axes of the eight spraying holes 101 are consistent with the radial direction of the spraying ring 1; that is, the axes of the eight spray holes 101 are all perpendicular to the axis of the spray ring 1; and an atomizing nozzle is fixedly connected in the spraying hole 101. Through the design of arranging the atomizing nozzles in the atomizing holes, the water mist is denser, the spraying effect of water flow sprayed from the atomizing holes is improved, and the blocking effect of the water mist on coal dust is further improved.
When the coal mine dust removal device is used, firstly, a placing drill hole 6 with the outer diameter matched with that of the spray ring 1 is drilled in a drill hole area by using drilling equipment, then the spray ring 1, the fixing rod 3 and the water inlet pipe 2 are inserted into the placing drill hole 6, finally, a water supply pipeline is communicated with the water inlet pipe 2, and then drilling operation can be carried out, when drilling is carried out, one end of a drill rod 5 sequentially penetrates through the second protection ring 4 and the first protection ring 7, and then drilling operation is carried out, at the moment, the spray holes 101 in the inner side face of the spray ring 1 can spray water in the water supply pipeline, covering water mist is formed on the outer side of the drill rod 5, the water mist can block coal dust generated in the drill hole and realize coal dust settling operation, coal dust overflow from the drill hole is prevented, dust removal operation in the drill hole is realized, the situation that the coal dust is scattered and difficult to remove dust after the coal dust comes out from the drill hole is avoided, the dust removal effect of coal mine mining operation is effectively improved, along with the continuous increase of the drilling depth, the spray ring 1 and the fixing rod 3 can extend into the drill hole 6 by about 1 meter, the placing length of the coal mine dust removal device, the placing device is ensured, the placing device, the placing drill hole placement device has low economic efficiency, the production cost and the economic production cost of coal mine mining operation, the coal mine mining operation, and the coal mining cost of the coal mining operation can be completely reduced, and the coal mining cost of the coal mining operation, and the coal mining cost of the coal mine mining operation, and the coal mining cost of the coal mining operation is high mining cost of the coal mining operation.
Claims (7)
1. The utility model provides a prevent abrupt drilling ring type drill way spray dust collector which characterized in that: the outburst-prevention drilling ring type orifice spray dust removal device comprises a fixed rod, a water inlet pipe, a protection ring and a spray ring, wherein the spray ring is in an annular tubular shape, and a plurality of spray holes are formed in the inner side surface of the spray ring at equal intervals along the circumferential direction of the spray ring; a water inlet pipe and a fixed rod are arranged on one side of the spraying ring, the spraying ring is communicated with one end of the water inlet pipe, and the other end of the water inlet pipe is communicated with a water inlet pipeline; the fixed rods are provided with a plurality of fixed rods which are arranged along the circumferential direction of the spraying ring, one end of each fixed rod is fixedly connected with the side surface of the spraying ring, the fixed rods are provided with a plurality of protective rings for preventing the drill rods from being contacted with the water inlet pipe and the spraying ring, and the fixed rods are fixedly connected with the outer side surface of the protective rings; when the drill rod is used, one end of the drill rod sequentially penetrates through the protective ring and the spraying ring to perform drilling operation; the device comprises a spraying ring, a plurality of first protection rings and a plurality of second protection rings, wherein the two protection rings are respectively a first protection ring and a second protection ring, the first protection ring is sleeved on the inner side of the spraying ring, the outer side surface of the first protection ring is fixedly connected with the inner side surface of the spraying ring, a plurality of through holes are arranged on the inner side surface of the first protection ring at equal intervals along the circumferential direction of the first protection ring, and the through holes are arranged corresponding to the spraying holes arranged on the inner side surface of the spraying ring; the second protection ring is arranged between the fixed rod and the water inlet pipe, and the outer side wall of the second protection ring is fixedly connected with the fixed rod and the middle side surface of the water inlet pipe; a connecting gap is formed in one side of the spraying ring, two ends of the spraying ring, which are positioned in the connecting gap, are sealed, and an installation piece is arranged in the connecting gap and is fixedly connected with the fixed rod through the installation piece; the front side and the rear side of the mounting piece are both provided with connecting grooves and are embedded with the two ends of the spraying ring positioned in the connecting gap through the connecting grooves, and one side of the mounting piece is provided with a mounting groove and is embedded with one end of the fixed rod through the mounting groove; the outer side surface of the mounting piece is arc-shaped, and the bending radian of the outer side surface of the mounting piece is consistent with that of the outer side surface of the spraying ring.
2. The outburst prevention drilling ring type orifice spray dust removal device of claim 1, wherein: the spraying ring and the water inlet pipe are made of metal, one side of the spraying ring is fixedly connected with one end of the water inlet pipe, and the spraying ring is communicated with the water inlet pipe.
3. The outburst prevention drilling ring type orifice spray dust removal device of claim 2, wherein: one end of the water inlet pipe, which is far away from the spraying ring, is provided with a water pipe joint and is detachably connected with a water inlet pipeline through the water pipe joint; one side of the water inlet pipe close to the guard ring is fixedly connected with the outer side surface of the guard ring.
4. The outburst prevention drilling ring type orifice spray dust removal device of claim 3, wherein: the fixed rod is one, and the fixed rod and the water inlet pipe are correspondingly arranged at two ends of the spraying ring.
5. The outburst prevention drilling ring type orifice spray dust removal device of claim 4, wherein: the guard ring is made of copper metal.
6. The outburst prevention drilling ring type orifice spray dust removal device of claim 1, wherein: the axial directions of the plurality of spraying holes are consistent with the radial direction of the spraying ring.
7. The outburst prevention drilling ring type orifice spray dust removal device of claim 1, wherein: and an atomizing nozzle is fixedly connected in the atomizing hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011296198.4A CN112282677B (en) | 2020-11-18 | 2020-11-18 | Outburst-prevention drilling ring type orifice spray dust removal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011296198.4A CN112282677B (en) | 2020-11-18 | 2020-11-18 | Outburst-prevention drilling ring type orifice spray dust removal device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112282677A CN112282677A (en) | 2021-01-29 |
| CN112282677B true CN112282677B (en) | 2023-02-17 |
Family
ID=74398396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011296198.4A Active CN112282677B (en) | 2020-11-18 | 2020-11-18 | Outburst-prevention drilling ring type orifice spray dust removal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112282677B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201265377Y (en) * | 2008-10-08 | 2009-07-01 | 淮南矿业(集团)有限责任公司 | Fast dust laying apparatus in hole |
| CN203816816U (en) * | 2014-03-04 | 2014-09-10 | 湖南九九矿安装备有限公司 | Double-layer spraying device |
| CN203978343U (en) * | 2014-08-14 | 2014-12-03 | 淮南矿业(集团)有限责任公司 | The simple and easy drilling hole dust collector device that drilling construction is used |
| CN208137885U (en) * | 2018-05-11 | 2018-11-23 | 吴书宝 | A kind of concordant drilling dust-removing apparatus |
| CN109915050A (en) * | 2019-03-26 | 2019-06-21 | 河南理工大学 | Underground coal mine dry drilling drilling hole dust collector apparatus and method |
| CN210289673U (en) * | 2019-07-29 | 2020-04-10 | 中国电建集团中南勘测设计研究院有限公司 | Dust remover in percussion drilling |
-
2020
- 2020-11-18 CN CN202011296198.4A patent/CN112282677B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201265377Y (en) * | 2008-10-08 | 2009-07-01 | 淮南矿业(集团)有限责任公司 | Fast dust laying apparatus in hole |
| CN203816816U (en) * | 2014-03-04 | 2014-09-10 | 湖南九九矿安装备有限公司 | Double-layer spraying device |
| CN203978343U (en) * | 2014-08-14 | 2014-12-03 | 淮南矿业(集团)有限责任公司 | The simple and easy drilling hole dust collector device that drilling construction is used |
| CN208137885U (en) * | 2018-05-11 | 2018-11-23 | 吴书宝 | A kind of concordant drilling dust-removing apparatus |
| CN109915050A (en) * | 2019-03-26 | 2019-06-21 | 河南理工大学 | Underground coal mine dry drilling drilling hole dust collector apparatus and method |
| CN210289673U (en) * | 2019-07-29 | 2020-04-10 | 中国电建集团中南勘测设计研究院有限公司 | Dust remover in percussion drilling |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112282677A (en) | 2021-01-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103277129A (en) | Technology preventing gas on upper corner of coal mining working face from exceeding limit | |
| CN202073497U (en) | Three-dimensional rotating water jet chambering system for coal bed | |
| CN112282677B (en) | Outburst-prevention drilling ring type orifice spray dust removal device | |
| CN210564520U (en) | Inner spray sealing device of cantilever type tunneling machine | |
| CN213743306U (en) | Outburst-prevention drilling ring type orifice spray dust removal device | |
| CN207934841U (en) | Underground coal mine is drilled and the blowout prevention device for reducing dust in punch process | |
| CN114412407B (en) | Underground coal mine drilling sealing dust-falling blowout preventer | |
| CN110925013A (en) | Annular spraying dust removal device | |
| CN114033315B (en) | Protruding coal seam shield pressure relief hole inner drilling tool and hole outer sealing system thereof | |
| CN212642642U (en) | Spraying dust fall drilling rod | |
| CN210585439U (en) | Spray head for atomization system of coal mining machine | |
| CN202690050U (en) | Cutting part of heading machine | |
| CN214944404U (en) | Semi-open type blowout prevention hole assembly and gas control collection and discharge device | |
| CN209430116U (en) | A kind of environment-friendly dustless type water conservancy cutting drilling device | |
| CN213574199U (en) | Dust keeper in working face pressure relief vent is excavated | |
| CN219119303U (en) | Spraying dust device for coal mine | |
| CN205277481U (en) | A shower nozzle for dashing dirt pipeline | |
| CN220451807U (en) | Drilling shutoff dust collector | |
| CN206830222U (en) | A kind of waterfall type dust suppression device by water spray of high cut slope excavation slag | |
| CN210798890U (en) | Slurry supplementing short joint for trenchless directional drilling | |
| CN209761489U (en) | Dust fall blowout prevention integrated device | |
| CN201006509Y (en) | Dust removing showerhead | |
| CN203701964U (en) | Multifunctional water jet sprayer | |
| CN217080397U (en) | Gas anti-spraying hole device | |
| CN217206404U (en) | Equipment for preventing gas extraction drill hole collapse |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |