CN107587892B - A fine atomization foam dust collector for suppressing dust under mine - Google Patents
A fine atomization foam dust collector for suppressing dust under mine Download PDFInfo
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- CN107587892B CN107587892B CN201710991337.7A CN201710991337A CN107587892B CN 107587892 B CN107587892 B CN 107587892B CN 201710991337 A CN201710991337 A CN 201710991337A CN 107587892 B CN107587892 B CN 107587892B
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- fine atomization
- dust
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- 238000000889 atomisation Methods 0.000 title claims abstract description 50
- 239000000428 dust Substances 0.000 title claims abstract description 42
- 239000006260 foam Substances 0.000 title claims abstract description 41
- 239000007921 spray Substances 0.000 claims abstract description 31
- 238000002347 injection Methods 0.000 claims abstract description 20
- 239000007924 injection Substances 0.000 claims abstract description 20
- 239000003245 coal Substances 0.000 claims abstract description 18
- 238000005187 foaming Methods 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 230000001105 regulatory effect Effects 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 230000003068 static effect Effects 0.000 claims abstract description 8
- 230000002401 inhibitory effect Effects 0.000 claims abstract description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- 238000005507 spraying Methods 0.000 claims description 7
- 230000005641 tunneling Effects 0.000 claims description 5
- 230000001276 controlling effect Effects 0.000 claims description 3
- 230000000452 restraining effect Effects 0.000 claims description 3
- 239000003570 air Substances 0.000 description 12
- 239000007788 liquid Substances 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005065 mining Methods 0.000 description 4
- 230000002265 prevention Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 206010035653 pneumoconiosis Diseases 0.000 description 3
- 208000028571 Occupational disease Diseases 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000241 respiratory effect Effects 0.000 description 2
- 239000000080 wetting agent Substances 0.000 description 2
- 201000010001 Silicosis Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 230000004630 mental health Effects 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 210000005239 tubule Anatomy 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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- Nozzles (AREA)
Abstract
The invention aims to provide a fine atomization foam dust removing device for inhibiting underground dust of a coal mine, which comprises a fine atomization foam production device and a plurality of fine atomization spray heads, wherein the fine atomization foam production device comprises a foaming dust remover box, a compressed air supply pipeline, a static pressure water supply pipeline and a raw material mixing box, the fine atomization spray heads comprise spray head pipes and an injection cover, the injection cover is arranged at the front end of the spray head pipes, atomizing pipes are arranged in the spray head pipes, and the atomizing pipes are sequentially a reaming atomizing section, a mesoporous pressurizing section, a shrinkage cavity pressure regulating section and a foam mixing section from front to back.
Description
Technical Field
The invention belongs to the field of underground dust removal, and particularly relates to a fine atomization foam dust removal device for inhibiting underground dust of a coal mine.
Background
Along with the increase of the mechanization degree of the coal mine, a large amount of dust can be generated in various links such as coal mining, tunneling, transportation and lifting in the production process of the coal mine, so that the environment of each underground operation point is polluted, serious harm is brought to the physical health of operation workers, the underground workers operate in a high-concentration dust environment for a long time, respiratory dust can be inhaled, diseases such as coal and silicosis are caused, at present, the pneumoconiosis becomes the first occupational disease in China, and the coal industry directly and economically loses billions of yuan due to the pneumoconiosis every year, so that the detection and prevention work of the coal mine dust can be done with great effort to prevent the reoccurrence of similar accidents.
The mine dust prevention technology is a complex system engineering, in particular to a comprehensive dust prevention technology after extraction of a high-gas coal seam, most of mine dust in the high-gas coal seam which is easy to protrude belongs to hydrophobic property, water is difficult to moisten the mine dust prevention technology and is extracted for a long time, a large amount of water in the coal seam is lost, and the dry dust yield of the coal seam is increased. From the energy point of view, adding a wetting agent to water reduces the surface tension of the liquid, which is advantageous for improving the water absorption of coal dust, and the wetting agent should be capable of rapidly changing the solid-liquid interface properties to greatly improve the wetting degree of dust particles.
The common technology of spray dust fall at present is as follows: the automatic spraying device is widely applied in order to prevent and treat the diffusion of dust in places such as roadway transportation, transfer points and the like.
The foam dust removal technology mainly adopts a net type foamer, the working principle is that foam liquid is sprayed onto a foaming net by a spray head to form a liquid film, the liquid film is blown by compressed air to foam, if the pressure of the foam liquid is too high, the liquid film on the foaming net cannot form a liquid film, if the pressure of the compressed air is too high, the liquid film on the foaming net can be atomized, foam cannot be generated, and the pressure of underground water and the pressure of the compressed air of a coal mine are very high, so that the net type foamer is not beneficial to underground application.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides the fine atomization foam dust removal device for inhibiting the dust in the coal mine, which has the advantages of convenient connection, random integrated migration, high dust removal efficiency and good use effect, creates a good working environment for workers, and reduces the incidence rate of pneumoconiosis.
In order to achieve the above purpose, the technical scheme of the invention is as follows: a fine atomization foam dust removing device for restraining dust in a coal mine comprises a fine atomization foam production device and a plurality of fine atomization spray heads,
the fine atomization foam production device comprises a foaming dedusting agent box, a compressed air supply pipeline, a static pressure water supply pipeline, a raw material mixing box, wherein the foaming dedusting agent box, the compressed air supply pipeline and the static pressure water supply pipeline are connected with the raw material mixing box through pipelines, a valve and a flowmeter are arranged on the connecting pipeline and are used for controlling the inlet amount of air, water and foaming dedusting agent in the raw material mixing box,
the fine atomizing nozzle is connected with a raw material mixing box pipeline, the fine atomizing nozzle is fixed on a spraying frame, the spraying frame is installed on tunneling equipment, a plurality of universal bases used for connecting the fine atomizing nozzle are installed on the spraying frame, the fine atomizing nozzle comprises a nozzle pipe and an injection cover, the injection cover is installed at the front end of the nozzle pipe, the outer wall of the rear end of the nozzle pipe is provided with threads connected with the universal bases, an atomizing pipe is arranged inside the nozzle pipe, the atomizing pipe sequentially comprises a reaming atomizing section, a middle hole pressurizing section, a shrinkage cavity pressure regulating section and a foam mixing section from front to back, the reaming atomizing section is a large-mouth forward funnel pipe, the shrinkage cavity pressure regulating section is a large-mouth backward funnel pipe, the reaming atomizing section and the shrinkage cavity pressure regulating section are connected through the middle hole pressurizing section, the middle hole pressurizing section is a thin pipe, the two ends of the size of the thin pipe are consistent, the shrinkage cavity pressure regulating section is connected with the foam mixing section, the conical cover is provided with a plurality of spraying holes on the conical cover, and a plurality of secondary atomizing injection holes are formed in the side wall of the conical cover.
The section of the middle hole pressurizing section is round or oval.
The section of the middle hole pressurizing section is circular, and the diameter of the middle hole pressurizing section is 1.2mm.
The length of the mesoporous pressurizing section is 2.5-3.5 times of the diameter of the section.
The invention has the beneficial effects that: the fine atomization foam dust removal device can greatly improve the dust suppression efficiency of the mechanized mining working face of the coal mine, effectively solve the problem that the safety production and the physical and mental health of workers are seriously affected by high working flour dust, create a good working environment for the mining working face, improve the working efficiency of underground operators, and greatly reduce the probability of occupational diseases of first-line workers on the mining working face.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a physical diagram of a spray head according to the present invention.
Detailed Description
As shown in fig. 1 and 2, the fine atomization foam dust remover for restraining dust in coal mine comprises a fine atomization foam production device and a plurality of fine atomization spray heads,
the fine atomization foam production device comprises a foaming dedusting agent box 1, a compressed air supply pipeline 2, a static pressure water supply pipeline 3, a raw material mixing box 4, the foaming dedusting agent box 1, the compressed air supply pipeline 2 and the static pressure water supply pipeline 3 are connected with the raw material mixing box 4 through pipelines, a valve and a flowmeter are arranged on the connecting pipelines and are used for controlling the inlet amount of air, water and foaming dedusting agent in the raw material mixing box,
the foaming dedusting agent box is mainly used for storing solid-phase multielement ion dust suppressant and foaming agent, the foaming dedusting agent is automatically conveyed by utilizing pipeline negative pressure, the raw material mixing box is used for mixing compressed air, static pressure water and a foaming dedusting machine and forming fine atomization foam at a spray head, the fine atomization foam production device can control valves on all pipelines and read flow meter data through a computer system, thereby realizing automatic control,
the fine atomization nozzle 5 is connected with the pipeline of the raw material mixing box and is fixed on a spray frame which is arranged on the tunneling equipment, the spray frame is provided with a plurality of universal bases used for connecting the fine atomization nozzle, the nozzle can freely adjust the angle on the spray frame so that the sprayed foam can wrap the header or rocker arm of the tunneling machine to realize dust fall,
the fine atomization spray nozzle comprises a spray nozzle pipe 51 and an injection cover 52, the injection cover is arranged at the front end of the spray nozzle pipe, the outer wall of the rear end of the spray nozzle pipe 51 is provided with threads connected with a universal base, an atomization pipe is arranged in the spray nozzle pipe 51, the atomization pipe is sequentially provided with a reaming atomization section 53, a middle hole pressurization section 54, a shrinkage cavity pressure regulating section 55 and a foam mixing section 56 from front to back, the reaming atomization section 53 is a funnel-shaped pipe with a large opening forward, the shrinkage cavity pressure regulating section 55 is a funnel-shaped pipe with a large opening backward, the reaming atomization section 53 is connected with the shrinkage cavity pressure regulating section 55 through the middle hole pressurization section 54, the middle hole pressurization section 54 is a tubule with the length of 3.6mm, the cross section is round, the round diameter is 1.2mm, the two ends are consistent in size, the large opening end of the shrinkage cavity pressure regulating section 55 is connected with the foam mixing section 56,
the injection cover 52 is a conical cover, a plurality of spraying holes 57 are formed in the conical bottom side of the conical cover, and a plurality of secondary atomization injection holes 58 are formed in the side wall of the conical cover along the circumference.
The atomization reducing arrangement of the spray head mainly changes the atomization degree of foam by means of kinetic energy change, so that foam particles with smaller diameters are formed; the injection cover is mainly used for secondary atomization of foam to form optimal fine atomized foam particles. The secondary atomization injection hole on the injection cover is a cone angle area according to the Venturi effect principle, when the high-speed foam jet is ejected, air in the injection cover is taken away to form negative pressure, the secondary atomization injection hole on the injection cover automatically sucks ambient air to form low-speed injection air flow, the high-speed foam jet and the low-speed injection form composite vortex motion, secondary atomization of the foam jet is completed, atomization effect is improved, fine atomization foam ejection is formed, dust capturing efficiency is improved, optimal dust falling effect is achieved, and small-particle-size respiratory dust is better.
Claims (2)
1. A fine atomization foam dust collector for restraining colliery dust in pit, its characterized in that: comprises a fine atomization foam production device and a plurality of fine atomization spray heads, wherein the fine atomization foam production device comprises a foaming dedusting agent box, a compressed air supply pipeline, a static pressure water supply pipeline and a raw material mixing box, the foaming dedusting agent box, the compressed air supply pipeline and the static pressure water supply pipeline are connected with the raw material mixing box through pipelines, a valve and a flowmeter are arranged on the connecting pipeline and are used for controlling the inlet amount of air, water and foaming dedusting agent in the raw material mixing box, the fine atomization spray heads are connected with the raw material mixing box pipeline and are fixed on a spray frame, the spray frame is arranged on tunneling equipment, a plurality of universal bases used for connecting the fine atomization spray heads are arranged on the spray frame, the fine atomization spray heads comprise spray head pipes and injection covers, the injection covers are arranged at the front ends of the spray head pipes, the outer wall of the rear end of the spray head pipe is provided with threads connected with a universal base, an atomization pipe is arranged in the spray head pipe, the atomization pipe is sequentially provided with a reaming atomization section, a middle hole pressurization section, a shrinkage cavity pressure regulating section and a foam mixing section from front to back, the reaming atomization section is a large-mouth forward funnel-shaped pipe, the shrinkage cavity pressure regulating section is a large-mouth backward funnel-shaped pipe, the reaming atomization section and the shrinkage cavity pressure regulating section are connected through the middle hole pressurization section, the middle hole pressurization section is a thin pipe, the two ends are consistent in size, the large-mouth end of the shrinkage cavity pressure regulating section is connected with the foam mixing section, the section of the middle hole pressurization section is round or oval, the length of the middle hole pressurization section is 2.5-3.5 times of the diameter of the section, the injection perforation cover is a conical cover, a plurality of spraying holes are formed in the conical bottom side of the conical cover, and a plurality of secondary atomization guides are circumferentially arranged on the side wall of the conical cover.
2. The fine atomized foam dust removal device for inhibiting dust in a coal mine according to claim 1, wherein: the section of the middle hole pressurizing section is circular, and the diameter of the middle hole pressurizing section is 1.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710991337.7A CN107587892B (en) | 2017-10-23 | 2017-10-23 | A fine atomization foam dust collector for suppressing dust under mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710991337.7A CN107587892B (en) | 2017-10-23 | 2017-10-23 | A fine atomization foam dust collector for suppressing dust under mine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107587892A CN107587892A (en) | 2018-01-16 |
| CN107587892B true CN107587892B (en) | 2023-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710991337.7A Active CN107587892B (en) | 2017-10-23 | 2017-10-23 | A fine atomization foam dust collector for suppressing dust under mine |
Country Status (1)
| Country | Link |
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| CN (1) | CN107587892B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114272703B (en) * | 2021-11-10 | 2022-09-13 | 深圳市永鑫泰精密机械有限公司 | Foam dust remover |
| CN114607447A (en) * | 2022-04-12 | 2022-06-10 | 洛阳赛欧矿山设备有限公司 | Dust fall atomizer special for tunnel |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101251025A (en) * | 2008-04-08 | 2008-08-27 | 中国矿业大学 | Coal mine down-hole foam dedusting system |
| EP1985333A1 (en) * | 2007-04-27 | 2008-10-29 | Sogepi S.A. | Improved compressed air foam technology |
| CN201454327U (en) * | 2009-07-30 | 2010-05-12 | 张仁贵 | Foam dust inhibitor |
| CN102052085A (en) * | 2011-01-24 | 2011-05-11 | 中国矿业大学 | Mine dedusting system and method |
| RU2526692C1 (en) * | 2013-07-08 | 2014-08-27 | Олег Савельевич Кочетов | Deluge sprinkler of kochetov |
| DE202014105139U1 (en) * | 2013-11-04 | 2014-11-13 | Shang-Hua Wu | Foam fire fighting equipment |
| CN204532408U (en) * | 2015-03-04 | 2015-08-05 | 冀中能源峰峰集团有限公司 | The distinguished and admirable atomizing dust removing device of a kind of channel of coal mining working surface |
| CN105863720A (en) * | 2016-05-06 | 2016-08-17 | 太原理工大学 | Mining bubble atomization water mist dust settling device |
-
2017
- 2017-10-23 CN CN201710991337.7A patent/CN107587892B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1985333A1 (en) * | 2007-04-27 | 2008-10-29 | Sogepi S.A. | Improved compressed air foam technology |
| CN101251025A (en) * | 2008-04-08 | 2008-08-27 | 中国矿业大学 | Coal mine down-hole foam dedusting system |
| CN201454327U (en) * | 2009-07-30 | 2010-05-12 | 张仁贵 | Foam dust inhibitor |
| CN102052085A (en) * | 2011-01-24 | 2011-05-11 | 中国矿业大学 | Mine dedusting system and method |
| RU2526692C1 (en) * | 2013-07-08 | 2014-08-27 | Олег Савельевич Кочетов | Deluge sprinkler of kochetov |
| DE202014105139U1 (en) * | 2013-11-04 | 2014-11-13 | Shang-Hua Wu | Foam fire fighting equipment |
| CN204532408U (en) * | 2015-03-04 | 2015-08-05 | 冀中能源峰峰集团有限公司 | The distinguished and admirable atomizing dust removing device of a kind of channel of coal mining working surface |
| CN105863720A (en) * | 2016-05-06 | 2016-08-17 | 太原理工大学 | Mining bubble atomization water mist dust settling device |
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| Publication number | Publication date |
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| CN107587892A (en) | 2018-01-16 |
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