CN111255505A - Portable dry fog generating device based on underground compressed air water supply pipeline - Google Patents
Portable dry fog generating device based on underground compressed air water supply pipeline Download PDFInfo
- Publication number
- CN111255505A CN111255505A CN202010194136.6A CN202010194136A CN111255505A CN 111255505 A CN111255505 A CN 111255505A CN 202010194136 A CN202010194136 A CN 202010194136A CN 111255505 A CN111255505 A CN 111255505A
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- water
- gas circuit
- pipe
- generating device
- dry fog
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 71
- 239000007921 spray Substances 0.000 claims abstract description 14
- 230000001012 protector Effects 0.000 claims abstract description 6
- 238000005452 bending Methods 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 5
- 239000010963 304 stainless steel Substances 0.000 claims description 3
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000000428 dust Substances 0.000 abstract description 20
- 230000001629 suppression Effects 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 4
- 238000000889 atomisation Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 238000001914 filtration Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000003595 mist Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000036541 health Effects 0.000 description 3
- 238000005422 blasting Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
-
- 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
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/02—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying
- E21F5/04—Spraying barriers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
- B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
- B05B7/0884—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point the outlet orifices for jets constituted by a liquid or a mixture containing a liquid being aligned
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Nozzles (AREA)
Abstract
The invention provides a portable dry fog generating device based on an underground compressed air water supply pipeline, and belongs to the technical field of dry fog dust suppression for underground mines. The device includes casing, shower nozzle and pipe-line system, and the casing includes casing and lower casing, goes up the casing and is equipped with shower nozzle export and shower nozzle protector, and the casing is equipped with the hanger down, and pipe-line system includes that gas circuit nest of tubes and water route nest of tubes, and gas circuit nest of tubes includes that the gas circuit is responsible for, gas circuit branch pipe and T type quick-operation joint A, and the water route nest of tubes is responsible for, water route branch pipe, T type quick-operation joint B and L type quick-operation joint including the water. The device chooses the pressurized air and pressurized water in the pit as the gas and water source, and the power source is provided by the pressurized air, thus ensuring the micron-sized atomization effect of the device, having assemblability in structure, reducing the maintenance cost, reducing the spray dead angle, and being capable of being hung and used in any underground area.
Description
Technical Field
The invention relates to the technical field of dry fog dust suppression for underground mines, in particular to a portable dry fog generating device based on an underground compressed air water supply pipeline.
Background
In recent years, with the continuous development of mining technology, the popularization of large mechanized mining equipment leads to the continuous increase of underground productive dust concentration, and the physical health of underground workers is seriously harmed. Therefore, the research and development of efficient dust falling technology and equipment have important significance for controlling the underground dust concentration and protecting the occupational health of workers.
At present, two methods of ventilation dust discharge and spray dust reduction are mainly applied to underground dust suppression measures. Practice shows that the requirement of on-site dust removal cannot be met by only ventilating and discharging dust. In addition, the water mist generated by the common spray dust-settling device has large particles and small specific surface area, and the hydrophobicity of coal dust causes that the dust suppression rate is limited, especially for respiratory dust. In recent years, dry mist dust suppression technology has been applied to underground mines due to its excellent atomization effect and small droplet size. However, common dry fog dust suppression equipment is bulky, has numerous pipe valves, and requires an external power source. This not only makes its running cost increase, and the installation, remove and maintain the degree of difficulty height moreover, this greatly reduced spraying dust device in the result of use in the pit, restricted its in the pit widely used.
Based on this, the development of the dry fog generating device which is convenient to use, can be combined, is low in cost and daily maintenance difficulty and has important significance for improving the underground dust suppression rate, improving the working environment of workers and guaranteeing the health of the workers.
Disclosure of Invention
The invention provides a portable dry fog generating device based on an underground compressed air water conveying pipeline, which aims to solve various problems and limitations in the underground use process of the existing dry fog dust suppression technology in a mine.
The device includes casing, shower nozzle and pipe-line system, and the casing includes casing and lower casing, goes up and sets up nozzle outlet and nozzle protector on the casing, and nozzle protector is fixed in casing both sides for prevent to damage the nozzle in transport, installation. The lower casing is used for supporting all the other device parts, the hanger is equipped with to casing both sides down, be used for linkage, the shower nozzle has air supply entry and water source entry, the shower nozzle is fixed in on the nozzle outlet, pipe-line system includes that gas circuit nest of tubes and water route nest of tubes, gas circuit nest of tubes includes that the gas circuit is responsible for, gas circuit branch pipe and T type quick-operation joint A, the gas circuit is responsible for and is connected through T type quick-operation joint A with the gas circuit branch pipe, gas circuit branch pipe export connects in shower nozzle bottom air supply entry, the water route nest of tubes is responsible for including the water route, the water route branch pipe, T type quick-operation joint B and L type quick-operation joint, the water route is responsible for and is connected through T type quick-operation.
The shell is made of 304 galvanized stainless steel and has the thickness of 2 mm.
The upper shell is bent in a trapezoidal shape, the included angle of the bending is 120 degrees, in the three bending processes, each bending process is 180cm long and 15cm wide, and 3 circular holes which are 60cm apart and have the diameter of 3cm are arranged in the middle of each bending process and serve as nozzle outlets.
The lower shell is bent in a U shape, and the length of the lower shell is 180 cm. The hanger 121 is a hook type.
The nozzle is a 304 stainless steel gas and water combined nozzle with 8mm nozzle diameter, the number of the nozzles is 9, each nozzle requires 1-3Mpa of air inlet pressure and 0.1-0.5Mpa of water inlet pressure, the diameters of particles in used air sources and water sources are not more than 8mm, and the nozzles are matched with a high-precision gas and water combined type filtering device when in use.
The T-shaped quick joint A and the T-shaped quick joint B are T-shaped reducing tee joints, and the diameter of each joint is 12mm and 8 mm; the L-shaped quick joint uses a right-angle two-way joint, and the diameters of the two joints are both 8 mm. Both quick connectors can be used to quickly connect and disconnect pipes using a press on interface.
The gas circuit pipe group uses underground compressed air as a gas source and a power source; the main gas circuit pipe and the branch gas circuit pipe are connected by a T-shaped quick joint A, the diameter of the main gas circuit pipe is 12mm, and the diameter of the branch gas circuit pipe is 8 mm; the inlet of the gas path main pipe is connected with the gas outlet of a self-made high-precision gas and water shared filtering device, the tail end of the gas path main pipe is blocked, and the thicker gas path main pipe can reduce the pressure loss of gas before reaching the spray head; the outlet of the gas path branch pipe is connected with the gas source inlet at the bottom end of the spray head; in order to deal with environments such as stope blasting and the like, the gas circuit pipe group is made of high-temperature and high-pressure resistant PU pipes.
The waterway pipe group uses underground pressurized water as a water source and a power source; the waterway main pipe and the waterway branch pipe are connected by a T-shaped quick joint B, the diameter of the waterway main pipe is 12mm, and the diameter of the waterway branch pipe is 8 mm; the outlet of the branch pipe of the waterway is connected with an L-shaped quick joint, and the other end of the L-shaped quick joint is connected with the water source inlet on the side surface of the spray head; in order to deal with environments such as stope blasting and the like, the water channel pipe group is made of a high-temperature and high-pressure resistant PU pipe.
The technical scheme of the invention has the following beneficial effects:
the invention utilizes the underground compressed air system as a power source, designs the generating device corresponding to the dry fog according to the underground conventional compressed air pressure value, effectively solves the problem of insufficient power of the dry fog dust suppression equipment under the well while ensuring the atomization effect, and greatly reduces the use cost. Secondly, the device can be used in combination, so that the requirements of dust suppression on different underground sections are met. In addition, the device has the remarkable characteristics of convenience in use, simplicity in maintenance and the like.
Drawings
FIG. 1 is a schematic structural diagram of a portable dry fog generating device based on a down-hole compressed air water supply pipeline according to the present invention;
FIG. 2 is a schematic structural diagram of a housing of the portable dry fog generating device based on a down-hole compressed air water supply pipeline;
FIG. 3 is a schematic view of a nozzle structure of the portable dry fog generating device based on the down-hole compressed air water supply pipeline;
FIG. 4 is a schematic view showing the flow direction of air and water in the portable dry fog generating device based on the underground compressed air water supply pipeline according to the present invention;
FIG. 5 is a schematic view of the nozzle connection of the portable dry fog generating device based on the down-hole compressed air water supply pipeline.
Wherein: the device comprises a shell 1, a spray head 2, a pipeline system 3, an upper shell 11, a lower shell 12, a nozzle outlet 111, a nozzle protector 112, a hanger 121, a gas source inlet 21, a water source inlet 22, a gas circuit pipe group 31, a water circuit pipe group 32, a gas circuit main pipe 311, a gas circuit branch pipe 312, a T-shaped quick joint A, a water circuit main pipe 321, a water circuit branch pipe 322, a T-shaped quick joint B323 and a L-shaped quick joint 324.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
The invention provides a portable dry fog generating device based on an underground compressed air water supply pipeline.
As shown in fig. 1 and fig. 2, the device includes a housing 1, a nozzle 2 and a piping system 3, the housing 1 includes an upper housing 11 and a lower housing 12, the upper housing 11 is provided with a nozzle outlet 111 and a nozzle protector 112, two sides of the lower housing 12 are provided with a hanger 121, the nozzle 2 has an air source inlet 21 and a water source inlet 22, the nozzle 2 is fixed on the nozzle outlet 111, the piping system 3 includes an air channel pipe set 31 and a water channel pipe set 32, the air channel pipe set 31 includes an air channel main pipe 311, an air channel branch pipe 312 and a T-shaped quick coupling a313, the air channel main pipe 311 and the air channel branch pipe 312 are connected by the T-shaped quick coupling a313, the air channel branch pipe 312 is connected to the air source inlet 21 at the bottom end of the nozzle 2, the water channel pipe set 32 includes a water channel main pipe 321, a water channel branch pipe 322, a T-shaped quick coupling B323 and an L-shaped quick coupling 324, the, the other end of the L-shaped quick coupling 324 is connected with the water source inlet 22 on the side of the spray head 2.
The shell 1 is made of 304 galvanized stainless steel and has a thickness of 2 mm.
The upper shell 11 is a trapezoid bend with a bend included angle of 120 degrees, in the three bends, each bend is 180cm long and 15cm wide, and 3 circular holes with the diameter of 3cm and the distance of 60cm are arranged in the middle of each bend and serve as nozzle outlets 111.
The lower shell 12 is bent in a U shape, and the length is 180 cm. The hanger 121 is a hook type.
As shown in figure 3, the nozzles 2 are 304 stainless steel nozzles with 8mm nozzle diameter and used for gas and water, the number of the nozzles 2 is 9, each nozzle requires 1-3Mpa of gas inlet pressure and 0.1-0.5Mpa of water inlet pressure, and the diameters of particles in the used gas source and water source are 0-8 mm.
The T-shaped quick joint A313 and the T-shaped quick joint B323 are T-shaped variable-diameter tee joints, and the diameter of each joint is 12mm and 8 mm; the L-shaped quick connector 324 uses a right-angle two-way connector, and the diameters of the two connectors are both 8 mm.
The main gas circuit pipe 311 and the branch gas circuit pipe 312 are high-pressure PU pipes, the diameter of the main gas circuit pipe 311 is 12mm, and the diameter of the branch gas circuit pipe 312 is 8 mm.
The waterway main pipe 321 and the waterway branch pipe 322 are high-pressure PU pipes, the diameter of the waterway main pipe 321 is 12mm, and the diameter of the waterway branch pipe 322 is 8 mm.
In actual use, the device is first assembled on the ground: (1) the spray head 2 and the pipe system 3 are assembled. As shown in fig. 5, a T-shaped quick coupling a313 is used to connect the main gas path pipe 311 and the branch gas path pipe 312, and then the outlet of the branch gas path pipe 312 is connected to the gas source inlet 21 at the bottom end of the nozzle; the T-shaped quick connector B323 is used for connecting the waterway main pipe 321 and the waterway branch pipe 322, one end of the L-shaped quick connector 324 is connected with the outlet of the waterway branch pipe 322, and the other end is connected with the water source inlet 22 on the side surface of the spray head 2. (2) The spray head 2 and the piping system 3 are assembled to the upper case 11. The head 2 is fixed to the head outlet 111 of the upper case 11. (3) The assembled upper case 11 is assembled to the lower case, and the assembly of the present apparatus is completed. Hook type hangers 121 may be used to hang the device if necessary.
After the device is assembled, the device is transported to a place needing to suppress dust underground, and compressed air and compressed water are connected into the device: the inlet of the main pipe 311 of the air channel of the device is connected with the gas outlet of a self-made high-precision gas and water shared filter device, the inlet of the main pipe 321 of the water channel is connected with the water outlet of the self-made high-precision gas and water shared filter device, and then the self-made high-precision gas and water shared filter device is connected with the compressed air and compressed water pipeline.
Opening a valve of a high-precision gas and water shared type filtering device, filtering impurities with the particle size larger than 8mm from gas and water in a compressed air and compressed water pipe through the filtering device, and introducing the gas and the water into a pipeline system 3; as shown in fig. 4, the filtered gas and water enter the spray head 2 through the pipeline system 3 to be mixed, and finally are atomized by the spray head to form dry mist, so that the dry mist dust-settling effect is achieved.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. The utility model provides a portable dry fog generating device based on in pit forced air water supply pipeline which characterized in that: including casing (1), shower nozzle (2) and pipe-line system (3), casing (1) is including last casing (11) and lower casing (12), it sets up nozzle outlet (111) and nozzle protector (112) on casing (11) to go up, hanger (121) are equipped with to casing (12) both sides down, shower nozzle (2) have air supply entry (21) and water source entry (22), shower nozzle (2) are fixed in on nozzle outlet (111), pipe-line system (3) are including gas circuit nest of tubes (31) and water route nest of tubes (32), gas circuit nest of tubes (31) are including gas circuit person in charge (311), gas circuit branch pipe (312) and T type quick-operation joint A (313), gas circuit person in charge (311) and gas circuit branch pipe (312) are connected through T type quick-operation joint A (313), gas circuit branch pipe (312) export is in shower nozzle (2) bottom entry (21), water route nest of tubes (32) is including water route person in charge (321, The water channel branch pipe (322), the T-shaped quick joint B (323) and the L-shaped quick joint (324), the water channel main pipe (321) is connected with the water channel branch pipe (322) through the T-shaped quick joint B (323), the outlet of the water channel branch pipe (322) is connected with the L-shaped quick joint (324), and the other end of the L-shaped quick joint (324) is connected with the water source inlet (22) on the side surface of the spray head (2).
2. The portable dry fog generating device based on the down-hole compressed air water conveying pipeline as claimed in claim 1, wherein: the shell (1) is made of 304 galvanized stainless steel and has the thickness of 2 mm.
3. The portable dry fog generating device based on the down-hole compressed air water conveying pipeline as claimed in claim 1, wherein: the upper shell (11) is in a trapezoidal bending shape, the bending included angle is 120 degrees, in three bending directions, each bending direction is 180cm in length and 15cm in width, and 3 circular holes which are 60cm away from each other and 3cm in diameter are arranged in the middle of each bending direction and serve as nozzle outlets (111).
4. The portable dry fog generating device based on the down-hole compressed air water conveying pipeline as claimed in claim 1, wherein: the lower shell (12) is U-shaped bent, and the length of the lower shell is 180 cm.
5. The portable dry fog generating device based on the down-hole compressed air water conveying pipeline as claimed in claim 1, wherein: the hanger (121) is of a hook type.
6. The portable dry fog generating device based on the down-hole compressed air water conveying pipeline as claimed in claim 1, wherein: the nozzle (2) selects 304 stainless steel gas and water combined nozzles with nozzle diameter of 8mm, the number of the nozzles (2) is 9, each nozzle requires air inlet pressure of 1-3Mpa and water inlet pressure of 0.1-0.5Mpa, and the diameters of particles in used air sources and water sources are not more than 8 mm.
7. The portable dry fog generating device based on the down-hole compressed air water conveying pipeline as claimed in claim 1, wherein: the T-shaped quick joint A (313) and the T-shaped quick joint B (323) are T-shaped variable-diameter tee joints, and the diameter of each joint is 12mm to 8 mm; the L-shaped quick joint (324) uses a right-angle two-way joint, and the diameters of the two joints are both 8 mm.
8. The portable dry fog generating device based on the down-hole compressed air water conveying pipeline as claimed in claim 1, wherein: the gas circuit main pipe (311) and the gas circuit branch pipes (312) are high-pressure PU pipes, the diameter of the gas circuit main pipe (311) is 12mm, and the diameter of the gas circuit branch pipes (312) is 8 mm.
9. The portable dry fog generating device based on the down-hole compressed air water conveying pipeline as claimed in claim 1, wherein: the water channel main pipe (321) and the water channel branch pipe (322) are high-pressure PU pipes, the diameter of the water channel main pipe (321) is 12mm, and the diameter of the water channel branch pipe (322) is 8 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010194136.6A CN111255505B (en) | 2020-03-19 | 2020-03-19 | Portable dry fog generating device based on underground compressed air water supply pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010194136.6A CN111255505B (en) | 2020-03-19 | 2020-03-19 | Portable dry fog generating device based on underground compressed air water supply pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111255505A true CN111255505A (en) | 2020-06-09 |
| CN111255505B CN111255505B (en) | 2021-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010194136.6A Active CN111255505B (en) | 2020-03-19 | 2020-03-19 | Portable dry fog generating device based on underground compressed air water supply pipeline |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101122237A (en) * | 2007-07-11 | 2008-02-13 | 曲阜市九龙山科工贸有限责任公司 | Inter-frame dust-cleaning equipment |
| CN102052085A (en) * | 2011-01-24 | 2011-05-11 | 中国矿业大学 | Mine dedusting system and method |
| CN203769837U (en) * | 2014-04-02 | 2014-08-13 | 安阳市思菲特矿用设备有限公司 | Multifunctional combined spraying device |
| CN204552804U (en) * | 2015-03-31 | 2015-08-12 | 洛阳龙门煤业有限公司 | Roadway full-fracture-surfacanchoring-rod atomization mechanism |
| CN205955768U (en) * | 2016-08-30 | 2017-02-15 | 永煤集团股份有限公司顺和煤矿 | Novel air water mixes spraying dust fall device |
| AU2018220007A1 (en) * | 2017-09-08 | 2019-03-28 | Vitold Ronda | Spray apparatus |
| CN208870633U (en) * | 2018-08-22 | 2019-05-17 | 安阳市思菲特矿用设备有限公司 | Multifunctional automatic spray device |
| CN109779674A (en) * | 2019-02-21 | 2019-05-21 | 华北科技学院 | A kind of cloud and mist dust-extraction unit for metal mine tunnel |
-
2020
- 2020-03-19 CN CN202010194136.6A patent/CN111255505B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101122237A (en) * | 2007-07-11 | 2008-02-13 | 曲阜市九龙山科工贸有限责任公司 | Inter-frame dust-cleaning equipment |
| CN102052085A (en) * | 2011-01-24 | 2011-05-11 | 中国矿业大学 | Mine dedusting system and method |
| CN203769837U (en) * | 2014-04-02 | 2014-08-13 | 安阳市思菲特矿用设备有限公司 | Multifunctional combined spraying device |
| CN204552804U (en) * | 2015-03-31 | 2015-08-12 | 洛阳龙门煤业有限公司 | Roadway full-fracture-surfacanchoring-rod atomization mechanism |
| CN205955768U (en) * | 2016-08-30 | 2017-02-15 | 永煤集团股份有限公司顺和煤矿 | Novel air water mixes spraying dust fall device |
| AU2018220007A1 (en) * | 2017-09-08 | 2019-03-28 | Vitold Ronda | Spray apparatus |
| CN208870633U (en) * | 2018-08-22 | 2019-05-17 | 安阳市思菲特矿用设备有限公司 | Multifunctional automatic spray device |
| CN109779674A (en) * | 2019-02-21 | 2019-05-21 | 华北科技学院 | A kind of cloud and mist dust-extraction unit for metal mine tunnel |
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| Publication number | Publication date |
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| CN111255505B (en) | 2021-03-23 |
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