CN110107337B - Underground dust removal method - Google Patents

Underground dust removal method Download PDF

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Publication number
CN110107337B
CN110107337B CN201810100227.1A CN201810100227A CN110107337B CN 110107337 B CN110107337 B CN 110107337B CN 201810100227 A CN201810100227 A CN 201810100227A CN 110107337 B CN110107337 B CN 110107337B
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China
Prior art keywords
bubbles
bubble
water tank
plate
foaming
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CN201810100227.1A
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CN110107337A (en
Inventor
李洋
隋晓峰
赵岩
贾向东
张志平
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Beijing Jingneng Technology Co Ltd
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Beijing Jingneng Technology Co Ltd
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Priority to CN201810100227.1A priority Critical patent/CN110107337B/en
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F5/00Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
    • E21F5/02Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F5/00Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
    • E21F5/02Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying
    • E21F5/06Fluids used for spraying

Abstract

The invention provides an underground dust removal method, which comprises the following steps: step A: continuously generating bubbles downhole with a foaming device; and B: drawing air for blowing bubbles from a downhole ventilated blower; and C: the air for blowing bubbles blows and diffuses bubbles continuously generated by the foaming device, and the blown bubbles are used for dedusting underground. The invention has simple structure and flexible rotation, can ensure that a large amount of bubbles continuously appear to form bubble waterfalls, and achieves better dust removal effect.

Description

Underground dust removal method
Technical Field
The invention relates to the field of dust removal, in particular to an underground dust removal method which can be used for working conditions of mines, construction sites, indoor decoration and the like.
Background
At present, coal dust hazard is one of five major disasters of a mine, and the hazard is mainly shown in two aspects: one is occupational disease (such as pneumoconiosis) which causes multiple occurrences in the coal industry; secondly, the potential safety hazard of coal dust explosion. According to the determination, under the condition that no dustproof measure is adopted, the dust concentration of the coal mine fully mechanized mining face in China is as high as 4000-6000 mg/m3, and even if the spray dustproof measure is adopted, most of mine dust still has serious harm. Therefore, how to more effectively reduce the concentration of coal dust is an important and urgent technical problem to be solved in order to ensure safe and efficient mining of a working face. Spray dust settling is one of dust settling measures commonly used in underground coal mines at present, but the dust settling effect on micro particles is not ideal.
In summary, the following problems exist in the prior art: the existing underground dust removal technology has poor dust removal effect.
Disclosure of Invention
The invention provides an underground dust removal method, which aims to solve the problem of poor dust removal effect of the existing underground dust removal technology.
Therefore, the invention provides a downhole dust removal method, which comprises the following steps:
step A: continuously generating bubbles downhole with a foaming device;
and B: drawing air for blowing bubbles from a downhole ventilated blower;
and C: the air for blowing bubbles blows and diffuses bubbles continuously generated by the foaming device, and the blown bubbles are used for dedusting underground.
Further, wind for blowing bubbles is led out from the side of the blower.
Further, in step a, wind power is used as the power of the bubbling device, and the bubbling device comprises: the water tank comprises a water tank for containing foaming liquid, the top of the water tank is provided with an opening, the bubble plate is arranged on the water tank through a rotating shaft and can rotate in the water tank, the bubble plate comprises a plurality of foaming rings surrounding the rotating shaft, and the plane where the foaming rings are located is a vertical plane.
Further, wind for driving the bubble plate to rotate is additionally drawn from a blower for down-hole ventilation.
Further, the foaming device can generate rows of bubbles at a time, and can generate waterfall type bubbles or bubble walls in succession.
Further, a partition is used to separate the wind for blowing the bubbles from the wind for driving the bubble plate to rotate.
Further, the baffle is made into a bent plate, so that the baffle guides the blown bubbles upwards and disperses the bubbles.
Further, in the step a, the bubble plate is placed in a water tank, the water tank contains foaming liquid for generating bubbles, 1/3 of the bubble plate is immersed in the foaming liquid, and wind for driving the bubble plate to rotate is blown to the bubble plate, and the bubble plate continuously generates bubbles during the rotation.
Further, a water tank is provided between the wind for blowing the bubbles and the wind for driving the bubble plate to rotate.
The action mechanism of the invention is as follows: in the research of the applicant, the main reasons of poor dust settling effect of spraying are short contact time of water mist and dust, high relative speed and weak dust catching capacity, so that the applicant is motivated by blowing bubbles by children to firstly generate bubbles which flutter along with wind, the flowing speed of the bubbles is close to that of dust in the air, the contact time of the bubbles and the dust is prolonged, and meanwhile, the foaming agent in the bubble liquid has an adsorption effect on the dust. On one hand, the micro dust in the slow flowing gas in the mine tunnel can be adhered to the surface of the bubble, and the dust in the air falls to the ground along with the falling or breaking of the bubble; on the other hand, bubble-wrapped contaminated dust also settles.
The invention uses the foaming device to continuously generate bubbles in the underground; drawing air for blowing bubbles from a downhole ventilated blower; the air for blowing bubbles blows and diffuses bubbles continuously generated by the machine, and the blown bubbles are used for dedusting the underground. Therefore, a large amount of bubbles continuously appear to form a bubble waterfall, thereby achieving a better dust removal effect.
Furthermore, the air blower is connected with the air supply device, an air supply pipe behind the air supply device blows the fan to rotate, and the bubble plate is coaxially connected with the fan so as to drive the bubble plate to rotate along with the fan; the bubble plate is placed in the middle water tank, and liquid for making bubbles is contained in the bubble plate, (1/3 of the bubble plate is immersed in the liquid for making bubbles); the air supply pipe in front of the air supply device is aligned with the position of the bubble ring in the bubble plate. After the power is on, the blower is started to drive the fan and the bubble plate to rotate. Because the circular ring position of the bubble plate is stained with liquid, wind blows out in front, so that a large number of bubbles continuously appear to form a bubble waterfall, and a better dust removal effect is achieved.
Drawings
FIG. 1 is a schematic perspective view of a first angle of a bubble dust collector used in the dust collection method of the present invention;
FIG. 2 is a schematic perspective view of a second angle of the bubble dust collector used in the dust removing method of the present invention;
FIG. 3 is a schematic front view of a bubble dust collector used in the dust removing method of the present invention;
FIG. 4 is a schematic top view of a bubble dust collector used in the dust removing method of the present invention;
FIG. 5 is a schematic left-view structural diagram of a bubble dust collector used in the dust removing method of the present invention;
FIG. 6 is a schematic structural diagram of a fan used in the dust removal method of the present invention;
FIG. 7 is a schematic structural diagram of a bubble plate used in the dust removing method of the present invention.
The reference numbers illustrate:
1. an air supply device; 2. a blower; 3. a foaming device; 4. a water tank; 5. a first blast pipe; 6. a second blast pipe; 7. a first air supply nozzle; 8. a second air supply nozzle; 9. a fan; 10. a bubble plate; 11. a rotating shaft; 15. a bubbling ring; 21. an air outlet channel; 41. a separator.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, the present invention will now be described with reference to the accompanying drawings.
As shown in fig. 1, 2, 3, 4 and 5, the downhole dust removing method of the present invention includes:
step A: continuously generating bubbles downhole with a foaming device;
and B: the wind for blowing bubbles is led out from the blower 2 for down-hole ventilation;
and C: the air for blowing bubbles blows and diffuses bubbles continuously generated by the foaming device, and the blown bubbles are used for dedusting underground.
Further, the wind for blowing bubbles is led out from the lateral side of the blower 2, so that the normal ventilation function of the blower is not affected.
Further, in the step A, wind power is used as power of the foaming device, so that the power consumption is reduced, and the power and related circuit facilities are saved.
Further, wind for driving the bubble plate 10 to rotate is additionally drawn from the blower 2 for down-hole ventilation. The blower 2 is a common device for underground ventilation, even if the dust removing device of the invention is not used, the blower is needed underground, and bubbles can be generated by using the blower without adding an additional power supply.
Further, the foaming device can generate rows of bubbles at a time, and can generate waterfall type bubbles or bubble walls in succession.
Further, a partition plate 41 is used to separate the wind for blowing the bubbles from the wind for driving the bubble plate to rotate, so as to avoid mutual interference.
Further, the partition plate 41 is formed as a bent plate, so that the partition plate 41 guides the bubbles blown out upward and disperses the bubbles, for example, the distance between the top of the partition plate 41 and the bubble plate 10 is larger than the distance between the bottom of the partition plate 41 and the bubble plate 10, which facilitates the bubbles to be dispersed obliquely upward.
Further, in the step a, the bubble plate 10 is placed in the water tank 4, the water tank 4 contains foaming liquid for generating bubbles, 1/3 of the bubble plate 10 is immersed in the foaming liquid, and air for driving the bubble plate to rotate is blown to the bubble plate, and the bubble plate 10 continuously generates bubbles during the rotation.
Further, the water tank 4 is arranged between the air for blowing bubbles and the air for driving the bubble plate to rotate, so that the structure is compact, and the occupied area is reduced.
The dust removing method of the present invention can be implemented by any suitable method or device, and the following is an example of a bubble dust remover used in the present invention.
As shown in fig. 1, 2, 3, 4 and 5, the bubble dust collector adopted in the embodiment of the present invention includes:
a blower 2 having an air outlet passage 21; the side wall of the air outlet channel 21 is made of metal, for example, steel;
the air blowing device 1 includes: the first air supply pipe 5 and the second air supply pipe 6 are separated from each other, and the first air supply pipe 5 and the second air supply pipe 6 are both connected with an air outlet channel 21 of the blower;
frothing device 3, comprising: water tank 4, papaw board 10 and fan 9, wherein, water tank 4 includes the basin that holds the foaming liquid, the top of basin is the opening, the water tank still includes: a partition plate 41 protruding upward or obliquely upward from the side wall of the water tub; the water tank 4 may be made of steel plate;
as shown in fig. 6 and 7, the bubble plate 10 and the fan 9 are coaxially connected by a rotating shaft 11, and the rotating shaft 11 is disposed on the partition plate 41; the bubble plate 10 and the fan 9 are respectively positioned at two sides of the partition plate 41, and the partition plate separates the bubble plate 10 and the fan 9 from each other so that the bubble plate and the fan do not interfere with each other; the partition plate 41 is, for example, circular arc-shaped, and is bent towards the fan 9 to enclose the fan 9 in half, so that a better air return effect is achieved, and the wind receiving effect of the fan is better; the side of the partition plate 41 facing the bubble plate 10 is in an upward arc shape, which plays a role of a wind deflector, and has a gentle guiding effect on the wind blown from the second air supply pipe 6, so that the bubbles can rise smoothly; and the partition plate 41 is convenient to guide the blown bubbles upwards and disperse the bubbles, for example, the distance between the top of the partition plate 41 and the bubble plate 10 is larger than the distance between the bottom of the partition plate 41 and the bubble plate 10, which is beneficial to the bubbles to be dispersed obliquely upwards.
As shown in fig. 7, the bubble plate 10 includes a plurality of bubble rings 15 surrounding the rotating shaft, the bubble rings 15 are circular rings, the material of the bubble rings 15 can be stainless steel, and the plane where the plurality of bubble rings 15 are located is a vertical plane;
the first air supply pipe 5 supplies air to the fan 9, and the second air supply pipe 6 blows out bubbles generated by bubble rings on the bubble plate.
Furthermore, the first air supply pipe 5 and the second air supply pipe 6 are respectively located on two sides of the partition plate 41, and both materials can be stainless steel, so that the arrangement is convenient, the interference is reduced, and the space is compact.
Further, the number of the bubble plates 10 and the number of the fans 9 are plural, and the number of the rotating shafts 11 is plural, so that the bubble generating device can generate rows of bubbles at a time, and can generate waterfall type bubbles or bubble walls in succession. Therefore, more bubbles can be generated, and the dust removal area is larger.
Further, the first air supply pipe 5 is provided with a plurality of first air supply nozzles 7 facing the fan, and the caliber of the first air supply nozzles 7 is smaller than that of the first air supply pipe 5, so that the fan can bear a larger wind speed.
Further, a plurality of the bubble rings 15 are arranged in an annular matrix around the rotating shaft to form circumferentially continuous bubbles.
Further, the second air supply duct 6 is provided with a plurality of second air supply nozzles 8 facing the bubble ring to blow out bubbles generated from the bubble ring. The caliber of the second air supply nozzle 8 is smaller than that of the second air supply pipe 6.
Furthermore, the first air supply pipe 5 and the second air supply pipe 6 are, for example, round pipes, parallel to each other and perpendicular to the air outlet channel 21, so that the lateral space of the blower can be fully utilized, and the normal air discharge of the blower is not affected.
Further, the axis of the rotating shaft 11 is perpendicular to the center lines of the first air supply pipe and the second air supply pipe, so that the fan and the bubble plate can be subjected to sufficient wind force.
Furthermore, the air supply direction of the first air supply nozzle 7 is parallel to the axis of the rotating shaft 11, and the wind power loss is small.
Furthermore, first blast pipe 5 and second blast pipe 6 are the straight tube, the preparation of being convenient for, and are a plurality of pivot 11 is linear array, and is a plurality of first tuyere 7 is linear array, and second tuyere 8 is also linear array, the air supply of being convenient for and installation preparation.
Further, the diameter of the bubble is 20mm to 40mm, for example, the diameter of the bubble ring 15 is controlled so that the diameter of the bubble ring 15 is 20mm to 40mm, thereby controlling the diameter of the bubble to be 20mm to 40mm, preferably 30mm, to be suitable for downhole dust removal.
Furthermore, the wind speeds of the two wind pipes are 1-2 m/s, the wind speeds are too large, bubbles are easy to blow up, the wind speeds are too small, the fan 9 rotates too slowly, the bubbles are not easy to diffuse, the wind speeds of the two wind pipes are 1-2 m/s, the effect is good, and the applicant selects the wind speeds of the two wind pipes to be 1.5m/s through repeated experiments, so that the density of the bubbles is reasonable, the diffusivity is good, and the shape is complete.
The implementation process of the invention is as follows:
the first air supply pipe 5 is provided with a plurality of (for example, 7) first air supply nozzles 7 facing the fan, the second air supply pipe 6 is provided with a plurality of (for example, 7) second air supply nozzles 8 facing the bubbling ring, the fan 9 and the water tank 4 are connected by a bearing, the fan 9 is provided with a rotating shaft 11 arranged in the bearing, and the bubble plate 10 is directly installed on the rotating shaft 11 of the fan 9, so that the bubble plate 10 is driven to move when the fan 9 rotates.
The blower can be a GXF-II type blower and is fixed on the ground through foundation bolts, the blower is connected with an air supply device, a first air supply pipe 5 blows a fan to rotate, and a bubble plate 10 is coaxially connected with the fan 9 so as to drive the bubble plate to rotate along with the fan; the bubble plate is placed in the middle water tank, and liquid for making bubbles (foaming liquid) is contained in the bubble plate, (1/3 of the bubble plate is to be immersed in the foaming liquid); the second air supply pipe 6 in front of the air supply device is aligned with a hollow bubble ring 15 of the bubble plate, the bubble ring 15 is a circular ring, and the bubble ring 15 takes out the bubble-forming liquid to form a film capable of foaming during the rotation of the bubble plate. After the power is on, the blower is started to drive the fan and the bubble plate to rotate. Because the bubble ring 15 of the bubble plate is stained with liquid, wind blows out in the front, so that a large number of bubbles continuously appear, and a bubble waterfall can be formed by the continuous appearance.
The invention has simple structure and flexible rotation, and can ensure that a large amount of bubbles continuously appear to form bubble waterfalls. The underground dust remover is provided with 2 to 3 dust removers, so that the tiny dust in the roadway can be effectively removed, and the purpose of dust removal is achieved. Wherein, the blower is the common equipment for underground ventilation, even if the dust removal equipment of the invention is not used, the blower is needed underground. The invention fully saves investment, reduces the occupied area of new equipment, achieves two purposes by one stroke, and is energy-saving and environment-friendly on the basis of utilizing the existing underground blower.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. In order that the components of the present invention may be combined without conflict, it is intended that all equivalent changes and modifications made by those skilled in the art without departing from the spirit and principles of the present invention shall fall within the protection scope of the present invention.

Claims (9)

1. A downhole dust removal method, comprising:
step A: continuously generating bubbles downhole with a foaming device;
and B: drawing air for blowing bubbles from a downhole ventilated blower;
and C: blowing out and diffusing the bubbles continuously generated by the foaming device by using the air for blowing the bubbles, and removing dust underground by using the blown bubbles;
the foaming device can generate rows of bubbles at a time and generate waterfall type bubbles or bubble walls in succession;
the bubble dust remover adopted by the underground dust removing method comprises the following steps:
the air blower is provided with an air outlet channel;
air supply arrangement includes: the first air supply pipe and the second air supply pipe are mutually separated and are connected with an air outlet channel of the blower;
a frothing device comprising: water tank, papaw board and fan, wherein, the water tank is including the basin that holds the foaming liquid, the top of basin is the opening, the water tank still includes: the partition plate extends upwards or obliquely upwards from the side wall of the water tank;
the bubble plate is coaxially connected with the fan through a rotating shaft, and the rotating shaft is arranged on the partition plate;
the bubble plate comprises a plurality of bubble rings surrounding the rotating shaft, and the plane where the bubble rings are located is a vertical plane;
the first air supply pipe supplies air to the fan, and the second air supply pipe blows out bubbles generated by a bubble ring on the bubble plate;
the first blast pipe is provided with a plurality of first blast nozzles facing the fan.
2. The downhole dusting method of claim 1 whereby in step B the wind for blowing bubbles is directed laterally from the blower.
3. The method of claim 1, wherein in step a, wind power is used as the power of a foaming device, the foaming device comprising: the water tank comprises a water tank for containing foaming liquid, the top of the water tank is provided with an opening, the bubble plate is arranged on the water tank through a rotating shaft and can rotate in the water tank, the bubble plate comprises a plurality of foaming rings surrounding the rotating shaft, and the plane where the foaming rings are located is a vertical plane.
4. The downhole dusting method of claim 1, whereby the wind for driving the rotation of the bubble plate is additionally drawn from a blower for downhole ventilation.
5. The downhole dusting method of claim 4, whereby a baffle is used to separate the wind used to blow the bubbles from the wind used to drive the rotation of the bubble plate.
6. The method of claim 5, wherein the baffle is formed as a curved plate such that the baffle directs the blown bubbles upwardly and diverges the bubbles.
7. The method of claim 3, wherein in the step A, the bubble plate is placed in a water tank, the water tank contains foaming liquid for generating bubbles, 1/3 of the bubble plate is immersed in the foaming liquid, the air for driving the bubble plate to rotate is blown to the bubble plate, and the bubble plate continuously generates bubbles during the rotation.
8. The downhole dusting method of claim 4, whereby a water tank is arranged between the wind for blowing bubbles and the wind for driving the rotation of the bubble plate.
9. The method of claim 1, wherein the bubble has a diameter of 20mm to 40mm and the two air pipes have a wind speed of 1 to 2 m/s.
CN201810100227.1A 2018-02-01 2018-02-01 Underground dust removal method Active CN110107337B (en)

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Application Number Priority Date Filing Date Title
CN201810100227.1A CN110107337B (en) 2018-02-01 2018-02-01 Underground dust removal method

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Application Number Priority Date Filing Date Title
CN201810100227.1A CN110107337B (en) 2018-02-01 2018-02-01 Underground dust removal method

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CN110107337B true CN110107337B (en) 2020-09-29

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1016534A2 (en) * 1982-02-05 1983-05-07 Восточное Отделение Всесоюзного Научно-Исследовательского Института Горноспасательного Дела Arrangement for conveying foam through subterranean mine workings into centre of fire
CN2748143Y (en) * 2004-11-09 2005-12-28 徐辉 Machine for generating smoke and bubble on stage
CN201454327U (en) * 2009-07-30 2010-05-12 张仁贵 Foam dust inhibitor
CN102102010A (en) * 2009-12-18 2011-06-22 淮南矿业(集团)有限责任公司 Foam dust arresting liquid and dust collecting method
CN202921184U (en) * 2012-11-01 2013-05-08 安徽理工大学 Mining foam generator
CN202970713U (en) * 2012-11-01 2013-06-05 安徽理工大学 Efficient foam dust removal device
CN103758558A (en) * 2014-02-11 2014-04-30 王刚 Vehicle-mounted foam type dedusting device of fully-mechanized roadheader
CN204428839U (en) * 2015-01-29 2015-07-01 长安大学 Bubble generating machine
CN104806283A (en) * 2015-05-04 2015-07-29 安徽理工大学 Bubble dedusting system for air dust in mine roadway
CN107456818A (en) * 2017-06-19 2017-12-12 王艺璁 A kind of automatic dust removing apparatus of high-efficient purification air

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1016534A2 (en) * 1982-02-05 1983-05-07 Восточное Отделение Всесоюзного Научно-Исследовательского Института Горноспасательного Дела Arrangement for conveying foam through subterranean mine workings into centre of fire
CN2748143Y (en) * 2004-11-09 2005-12-28 徐辉 Machine for generating smoke and bubble on stage
CN201454327U (en) * 2009-07-30 2010-05-12 张仁贵 Foam dust inhibitor
CN102102010A (en) * 2009-12-18 2011-06-22 淮南矿业(集团)有限责任公司 Foam dust arresting liquid and dust collecting method
CN202921184U (en) * 2012-11-01 2013-05-08 安徽理工大学 Mining foam generator
CN202970713U (en) * 2012-11-01 2013-06-05 安徽理工大学 Efficient foam dust removal device
CN103758558A (en) * 2014-02-11 2014-04-30 王刚 Vehicle-mounted foam type dedusting device of fully-mechanized roadheader
CN204428839U (en) * 2015-01-29 2015-07-01 长安大学 Bubble generating machine
CN104806283A (en) * 2015-05-04 2015-07-29 安徽理工大学 Bubble dedusting system for air dust in mine roadway
CN107456818A (en) * 2017-06-19 2017-12-12 王艺璁 A kind of automatic dust removing apparatus of high-efficient purification air

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