CN103075177A - Ventilating and dust preventing system for coal heading face - Google Patents
Ventilating and dust preventing system for coal heading face Download PDFInfo
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- CN103075177A CN103075177A CN2013100109141A CN201310010914A CN103075177A CN 103075177 A CN103075177 A CN 103075177A CN 2013100109141 A CN2013100109141 A CN 2013100109141A CN 201310010914 A CN201310010914 A CN 201310010914A CN 103075177 A CN103075177 A CN 103075177A
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- deduster
- air duct
- dust
- prevention system
- dedusting fan
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Abstract
The invention discloses a dedusting device for coal excavation, and particularly discloses a ventilating and dust preventing system for a coal heading face. The system comprises a dedusting device installed on a runway of a transferring sealing-tape machine of a heading machine. The dedusting device comprises a negative pressure air cylinder, a dedusting fan, a flexible air cylinder and a deduster. The negative pressure air cylinder is communicated with the inlet of the dedusting fan, and the outlet of the dedusting fan is communicated with the deduster through the flexible air cylinder. According to the system provided by the invention, dust concentration in the heading tunnel and the working face is reduced to a great extent, so that silicosis which is harmful to body health of workers and dust explosion which threatens the personal safety are effectively prevented and reduced.
Description
Technical field
The present invention relates to a kind of dust arrester for the coal excavation, particularly relate to a kind of coal automation examination dust prevention system.
Background technology
At present; in the excacations such as development, driving face, tunnel shotcrete; produce a large amount of pollutants; generally comprise dust pollution and exhaust emission, so need to dust guard be installed at the work plane of development machine, existing dust arrester efficiency of dust collection is low; can cause the staff to suck dust; usually anthraco-silicosis or Other diseases can occur, working environment is relatively poor, and staff's personal safety can not get good protection.
Summary of the invention
Coal automation examination dust prevention system of the present invention has overcome the deficiency that prior art exists, and a kind of raising efficient of prevent dust is provided, and makes a kind of coal automation examination dust prevention system that pollutes reduction.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: a kind of coal automation examination dust prevention system of the present invention, comprise the dust arrester on the reprinting sealing-tape machine runway that is installed in development machine, described dust arrester comprises negative pressure air duct, dedusting fan, flexible air duct and deduster, described negative pressure air duct is communicated with the entrance of described dedusting fan, and the outlet of described dedusting fan is communicated with by described flexible air duct with described deduster.
Also comprise fan supporter, described dedusting fan is installed on the described fan supporter.
Also comprise the deduster support, described deduster is installed on the described deduster support.
Described dedusting fan is that the explosion-proof pull-out type of FBDC type is to the axial flow rotary booster.
Described deduster is wet scrubber, comprises casing and is arranged on the interior dehydrator of casing.
Described negative pressure air duct is rubber-coated formula negative pressure air duct, and diameter is 600mm.
The power of described dedusting fan is 11KW, and exhaust air rate is 250～300m
3/ min, blast are 350-3850Pa.
Water injection rate＜5L/min in the described casing, the processing wind speed is 250～300m
3/ min, work noise≤85dB.
The performances such as negative pressure air duct is the rubber coated cloth negative pressure air duct among the present invention, and it is fire-retardant, antistatic, withstand voltage, cold-resistant, heat-resisting all meet MT165-1995 standard-required, negative pressure air duct diameter 600mm, and the longest (air draught distance) can reach 100 m.
Dedusting fan is that the explosion-proof pull-out type of FBDC type is to the axial flow rotary booster among the present invention, its structural shape be mine explosion-proof type, both stage impellers to revolve, outer covered type is eliminated the noise, motor is sealed in the interior air channel, with the weary wind isolation in the air channel, fan impeller adopts special material to make, antistatic, antifriction spark, use safety, reliable, positive pressure wind pipe outlet air quantity is 250-300 m
3/ min, dedusting fan power is chosen to be 11KW, and exhaust air rate is 186～310m
3/ min, blast are 350-3850Pa.
Deduster water injection rate 400 L among the present invention, water consumption＜5L/min processes air quantity 150-250 m
3/ min, work noise≤85dB (A).
Operating principle of the present invention is:
One, crooked streamlined guide vane is downwards arranged in the casing of wet scrubber, make dusty gas directly impact the water surface, make larger grit because effect of inertia falls into water tank, reach the purpose of primary dust removing.
Two, guide vane accelerates the air-flow that contains less grit, produces eddy current during by bending channel and fully collides the sedimentation that is hunted down with a large amount of water droplets, the water smoke that evoke, reaches the purpose of two-stage dust removal.
Three, dehydrator generates moisture film above dust-laden water droplet, water smoke in the air-flow are attached to, and reaches the effect that 3-stage dust-removal purifies air and dewaters.
Compared with prior art beneficial effect of the present invention is, because the present invention with dedusting fan and the effective combination of deduster, has following effect:
One, layout is unique
The characteristics such as unique horizontal layout, end face is little, compact conformation, globality are strong form high-performance dust-removing equipment of new generation.
Two, safe and reliable
Deduster safety, reliable, adopting the explosion-proof pull-out type of FBDC type is power to the axial flow rotary booster, utilizes water to make cleanser, resistance is little, noise is low, explosion-proof, safety.
Three, mechanism is advanced
Give full play to water-bath, water droplet, three kinds of dedusting functions of moisture film, rely on inertia, collide, hold back, Blang's diffusion, cohesion etc. are used for catching the dust in the air-flow, purification work plane air improves operating environment.
Four, economize on resources
Adopted unique efficient, high-adaptability wet dust collection technology, water consumption is little, and dewatering efficiency is high, can make water circulation use, and effective saving water resource, changes the water operating environment and can not pollute at regularly blowdown.
Five, assembling is convenient
Volume is little, lightweight, mobile easy for installation, according to the demand in user job place, the dust arrester that goes out various forms of different disposal air quantity capable of being combined satisfies user's use.
Six, dust removal efficiency is high
Adopt the long weak point of pressing to take out ventilating and purifying air system, can effectively realize the on the spot purification of dust, particularly respirable dust is had higher efficiency of dust collection.
Description of drawings
Fig. 1 is the structural representation of coal automation examination dust prevention system among the present invention.
Fig. 2 is the structural representation of dust guard among the present invention.
Fig. 3 is that dust concentration contrasted schematic diagram before and after 8101 air ways used dust arrester.
The specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used for explanation the present invention, but are not used for limiting the scope of the invention.
As depicted in figs. 1 and 2, coal automation examination dust prevention system comprises development machine 2, cutting arm of tunneling machine 1, negative pressure air duct 3, reprints sealing-tape machine 4, forced air duct 5 and dust arrester.
Dust arrester is installed on reprinting sealing-tape machine 4 runways of development machine 2, dust arrester comprises negative pressure air duct 3, dedusting fan 6, fan supporter 8, flexible air duct 10, deduster support 9 and deduster 7, negative pressure air duct 3 is communicated with the entrance of dedusting fan 6, dedusting fan 6 is installed on the fan supporter 8, the outlet of dedusting fan 6 is communicated with by flexible air duct 10 with deduster 7, and deduster 7 is installed on the deduster support 9.
Dedusting fan 6 is that the explosion-proof pull-out type of FBDC type is to the axial flow rotary booster.
Negative pressure air duct 3 is rubber-coated formula negative pressure air duct 3, and diameter is 600mm.
The power of dedusting fan 6 is 11KW, and exhaust air rate is 186～310m
3/ min, blast are 350-3850Pa.
Water injection rate＜5L/min in the casing, the processing wind speed is 250～300m
3/ min, work noise≤85dB.
Concrete installation steps are as follows:
One, dedusting fan 6 is installed
(1) first fan supporter 8 is stabilized on reprinting sealing-tape machine 4 runways of development machine 2;
(2) again dedusting fan 6 is fixed by bolts on the fan supporter 8.
Two, deduster 7 is installed
(1) first deduster support 9 is stabilized on reprinting sealing-tape machine 4 runways of development machine 2;
(2) again deduster 7 is stabilized on the deduster support 9;
(3) deduster 7 installation sites will be safely, avoid being subject to mechanical damage;
(4) deduster 7 is installed and will be kept horizontal and vertical level by adjusting device;
(5) water injection rate will satisfy the requirement of best dust removing effects.
Three, negative pressure air duct 3 is installed
(1) negative pressure air duct 3 uses regulation in time to hang, adjust by air duct under the coal mine, must not leak out, and guarantee that the inlet scoop is far from termination 2-3m;
(2) be connected by the flexible air duct 10 of pipe nipple between dedusting fan 6 and the deduster 7; Negative pressure air duct 3 is connected with dedusting fan 6 air intakes, and suction port is apart from the about 40m of dust arrester place.
Concrete use operation is as follows:
One, selects the reasonably short ventilating and purifying air system of taking out of long pressure, take forced ventilation as main, guarantee forced air duct 5 imports to the tunnel of dust arrester suction port minimum wind speed 0.15m/s, near work plane, be equipped with the short mode of taking out, dust laden air is sucked on the spot purified treatment of deduster 7, and the purification after the dedusting is distinguished and admirable to be discharged to the tunnel by dust arrester.
Two, forced booster is hung in the distance return aircourse and is not less than the 10m place, flexible air duct is hung non-pedestrian's side in the tunnel, the negative pressure air duct 3 of dust arrester is hung in tunnel pedestrian's side or is hung at the top, tunnel (with digging with connecing), and negative pressure air duct 3 adopts the negative pressure air duct 3 of diameter 600mm.
Three, dedusting fan 6 and deduster 7 are installed on reprinting sealing-tape machine 4 runways of development machine 2 in the dust arrester, and non-skid feature arranged, dedusting fan 6 is connected with deduster 7 air intakes by the flexible air duct 10 of pipe nipple, and deduster 7 generally is installed in dust arrester and is about the 40m place apart from the suction port distance.
Four, the flexible air duct 10 of forced booster is received the termination and is not more than the 5m place, after opening dedusting fan 6, flexible air duct 10 is disconnected at 20-30m place, distance termination, when dust arrester shuts down, the flexible air duct 10 that more forced portable blower is disconnected connects, and guarantees the normal air feed in termination.
Five, the dust arrester suction port will be connected to the driving face termination, is advisable with 2-3m apart from the distance of termination.
When six, dust arrester moves, observe at any time the water level situation, guarantee that the water level of water tank meets the demands, behind the operation certain hour (about 1 day), put sewage and annotate clear water respectively once dust arrester.
Seven, dust arrester will be along with the in time reach of development machine 2 drivings, and the gas detection probe will be hung at place, dust arrester rigidity air duct inlet scoop, and the outage gas density is 1%.
Eight, adjust the air quantity of dust arrester, guarantee that the air quantity of dust arrester more than or equal to the actual air volume of dust accumulation point, makes high concentrate dust all enter deduster and purifies.
Nine, dedusting fan 6 is in operation, and must monitor gas in the air duct, if when gas density surpasses 3%, and should be according to the safety code predetermined processing of discharging local accumulation gas under the coal mine.
Concrete effect
As shown in Figure 3, install and used dust arrester with driving level 8101 fortune lanes, 8101 air ways, the below relatively uses dust concentration change situation before and after the dust arrester as an example of 8101 air ways example, can draw after the 8101 air way use systems than the comparison before using such as Fig. 3, and unit is mg among the figure
/m
3
Coal cutting exhales dust concentration to reduce by 89.4%, and the non-dust concentration of exhaling has reduced by 95.5%, and full dust concentration has reduced by 92.9 %.
Cut rock and exhale dust concentration to reduce by 89.4%, the non-dust concentration of exhaling has reduced by 95.5%, and full dust concentration has reduced by 92.8 %.
The driver exhales the position dust concentration to reduce by 83.3%, and the non-dust concentration of exhaling has reduced by 92.1%, and full dust concentration has reduced by 88.9%.
Machinery is coaling and is exhaled dust concentration to reduce by 59.2%, and the non-dust concentration of exhaling has reduced by 83.6%, and full dust concentration has reduced by 72.7%.
The bridge-type belt exhales dust concentration to reduce by 95%, and the non-dust concentration of exhaling has reduced by 97.7%, and full dust concentration has reduced by 96.7%.
Exhale dust concentration to reduce by 98.3% in the middle of the tunnel, the non-dust concentration of exhaling has reduced by 99.3%, and full dust concentration has reduced by 98.9%.
Comprehensively above-mentioned, the present invention can make the dust concentration of digging laneway and work plane significantly reduce, and effectively prevents and reduce the coal-dust explosion of the healthy anthraco-silicosis of harm operating personnel and threat personal safety.
The above only is preferred embodiment of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the technology of the present invention principle; can also make some improvement and modification, these improve and modification also should be considered as protection scope of the present invention.
Claims (8)
1. coal automation examination dust prevention system, it is characterized in that: comprise the dust arrester on the reprinting sealing-tape machine runway that is installed in development machine, described dust arrester comprises negative pressure air duct, dedusting fan, flexible air duct and deduster, described negative pressure air duct is communicated with the entrance of described dedusting fan, and the outlet of described dedusting fan is communicated with by described flexible air duct with described deduster.
2. coal automation examination dust prevention system as claimed in claim 1, it is characterized in that: also comprise fan supporter, described dedusting fan is installed on the described fan supporter.
3. coal automation examination dust prevention system as claimed in claim 1, it is characterized in that: also comprise the deduster support, described deduster is installed on the described deduster support.
4. coal automation examination dust prevention system as claimed in claim 1, it is characterized in that: described dedusting fan is that the explosion-proof pull-out type of FBDC type is to the axial flow rotary booster.
5. coal automation examination dust prevention system as claimed in claim 1, it is characterized in that: described deduster is wet scrubber, comprises casing and is arranged on dehydrator in the casing.
6. coal automation examination dust prevention system as claimed in claim 1, it is characterized in that: described negative pressure air duct is rubber-coated formula negative pressure air duct, and diameter is 600mm.
7. coal automation examination dust prevention system as claimed in claim 4, it is characterized in that: the power of described dedusting fan is 11KW, exhaust air rate is 186～310m
3/ min, blast are 350-3850Pa.
8. coal automation examination dust prevention system as claimed in claim 5 is characterized in that: water injection rate＜5L/min in the described casing, the processing wind speed is 250～300m
3/ min, work noise≤85dB.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100109141A CN103075177A (en) | 2013-01-14 | 2013-01-14 | Ventilating and dust preventing system for coal heading face |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100109141A CN103075177A (en) | 2013-01-14 | 2013-01-14 | Ventilating and dust preventing system for coal heading face |
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|---|---|
| CN103075177A true CN103075177A (en) | 2013-05-01 |
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| CN2013100109141A Pending CN103075177A (en) | 2013-01-14 | 2013-01-14 | Ventilating and dust preventing system for coal heading face |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109779672A (en) * | 2019-03-23 | 2019-05-21 | 福州大学 | Mining impact water bath dust-extraction unit and its working method |
| CN110094226A (en) * | 2019-03-22 | 2019-08-06 | 中国煤炭科工集团太原研究院有限公司 | A kind of highwall laneway type Manless mining face-airing dust pelletizing system and method |
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| JP3462191B2 (en) * | 2001-05-11 | 2003-11-05 | 日野自動車株式会社 | Dust collector in tunnel |
| JP2004124529A (en) * | 2002-10-03 | 2004-04-22 | Nippon Koki Kk | Dust collecting system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110094226A (en) * | 2019-03-22 | 2019-08-06 | 中国煤炭科工集团太原研究院有限公司 | A kind of highwall laneway type Manless mining face-airing dust pelletizing system and method |
| CN109779672A (en) * | 2019-03-23 | 2019-05-21 | 福州大学 | Mining impact water bath dust-extraction unit and its working method |
| CN109779672B (en) * | 2019-03-23 | 2024-02-06 | 福州大学 | Mining impact water bath dust removal device and working method thereof |
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Application publication date: 20130501 |