CN109798147B - Dust settling system and method for vertical delivery process of filling materials - Google Patents
Dust settling system and method for vertical delivery process of filling materials Download PDFInfo
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Abstract
The invention discloses a dust settling system and method for a vertical delivery process of filling materials, which are suitable for underground filling. A dust removal roadway is dug at the joint of the underground feeding well and the storage bin and is connected with an adjacent roadway, a ventilation dust collection system, an air curtain dust separation system and a spraying dust suppression system are sequentially arranged in the dust removal roadway, and the ventilation dust collection system, the air curtain dust separation system and the spraying dust suppression system are finally communicated with the storage bin. The three systems operate simultaneously, dust fall is integrated, the dust yield in the vertical delivery process of the filling materials is effectively reduced, the operating environment in the vertical delivery process of the filling materials is improved, the delivery efficiency is improved, and the filling materials are delivered with less dust or without dust.
Description
Technical Field
The invention relates to a dust settling system and a method, in particular to a dust settling system and a method for a vertical delivery process of filling materials.
Background
The filling mining is to transport waste rock, tailings, aeolian sand, loess and the like serving as filling materials to the underground and fill a goaf, and the filling materials are used for supporting a roof to achieve the purpose of resource replacement. The filling mining is continuously developed because the filling mining can effectively control the ground surface subsidence of the mining area and reduce the damage of ecological resources of the mining area. In recent years, mines in China are continuously developed towards high yield and high efficiency, so that higher requirements are put forward on the filling capacity, the filling efficiency and the like of a filling mining system.
The filling material delivery is an important component in a filling mining system, the filling efficiency of an underground filling working face is inseparable from the filling material delivery efficiency, wherein the vertical delivery of the material is a common filling material delivery mode, the delivery mode comprises four stages of ground material storage, ground material conveying, material delivery above a well, underground storage and underground feeding, and the filling material delivery system has the characteristics of large delivery amount, long delivery distance and the like. However, in the stages of the above-well delivery and the underground storage of the filling materials, a large amount of dust and raised dust are generated, the operating environment in the vertical delivery process of the filling materials is deteriorated, the abrasion of material delivery equipment is accelerated, the improvement of the delivery efficiency of the filling materials is not facilitated, and the low-dust or dust-free delivery of the filling materials is realized, so that the research on the dust-settling method applicable to the vertical delivery process of the filling materials of the filling and mining mines is of great significance.
Disclosure of Invention
In order to overcome various defects in the prior art, the invention provides the dust falling method in the vertical delivery process of the filling materials, which can effectively reduce the dust yield in the delivery process of the filling materials, improve the working environment in the vertical delivery process of the filling materials and improve the delivery efficiency of the filling materials.
Aiming at the problems, the dust settling system for the vertical feeding process of the filler is characterized in that a dust removal tunnel is dug at the joint of the feeding underground and the storage bin and is connected with an adjacent tunnel, a ventilation dust collection system, an air curtain dust separation system and a spraying dust settling system are sequentially arranged in the dust removal tunnel, and the ventilation dust collection system, the air curtain dust separation system and the spraying dust settling system are finally communicated with the storage bin;
the ventilation and dust collection system comprises a dust collection fan, an air duct and a dust collection air duct which are connected in sequence, wherein the air duct and the dust collection air duct are fixed in a dust collection roadway by utilizing a steel frame, a plurality of dust collection nets are arranged in the dust collection air duct, the middle part of the dust collection air duct is of a concave U-shaped structure, dust collection liquid is arranged in the concave U-shaped structure, outlets and inlets on two sides of the dust collection air duct are higher than the liquid level of the dust collection liquid, a liquid inlet pipe is arranged above the dust collection air duct, a liquid discharge pipe is arranged below the dust collection air duct, and the liquid discharge pipe is connected with a drainage ditch arranged in the dust collection roadway;
the air curtain dust separation system comprises a dust separation door II, a plurality of groups of air curtain nozzles are arranged on the dust separation door II in pairs, and the air curtain nozzles of each group are horizontally arranged oppositely;
the spraying dust-settling system comprises a dust-proof door I, a plurality of groups of atomizing nozzles are arranged on the dust-proof door I in pairs, and the nozzles of each group of atomizing nozzles are horizontally arranged oppositely;
and pipelines connected with a ventilation and dust collection system are arranged at the tops of the dust isolating door I and the dust isolating door II.
The dust catching nets in the ventilation and dust collection system are arranged in the dust catching air cylinder at equal intervals, the number of the dust catching nets is 2-4, and the number of the dust catching nets is determined according to the physical and chemical characteristics of dust, the characteristics of dust catching liquid, the performance of a dust collection fan and other factors.
The atomizing nozzles in the atomizing dust-settling system and the air curtain nozzles in the air curtain dust-separating system are at least 4, and the equidistant surfaces are arranged around a dust-removing roadway.
The atomizing nozzle is provided with a dust isolating door I at one side far away from dust, and the distance between the atomizing nozzle and the dust isolating door I is 0.5-2 m; the dust-proof door I is arranged on one side of the air curtain nozzle close to dust, and the distance between the air curtain nozzle and the dust-proof door I is 2-10 m; the side far away from the dust is provided with a dust isolating door II, and the distance between the dust isolating door II and the dust isolating door II is 0.5-2 m; and a personnel identification device is arranged on the dust isolating door II.
A dust fall method in a vertical delivery process of filling materials comprises the following steps:
when no worker works in the dust removal tunnel, the ventilation and dust collection system operates independently, the dust collection fan operates to enable negative pressure to be formed inside and outside the storage bin, so that dust generated in the process that filling materials are vertically delivered to the storage bin through the feeding well flows into the dust catching air cylinder through pipelines at the tops of the dust isolating door I and the dust isolating door II, the dust flows enter the dust catching air cylinder and then collides into dust catching liquid in the dust catching air cylinder, the dust catching liquid quickly wets and precipitates a large amount of dust, when few unwetted dust flows continuously flow along the dust catching air cylinder, dust catching nets arranged in the dust catching air cylinder at equal intervals are collided, and finally the dust catching nets are adsorbed on the dust catching nets, opening a liquid discharge pipe according to the dust capturing and precipitating conditions of the dust capturing air duct, discharging dust capturing liquid containing a large amount of dust from the liquid discharge pipe to a drainage ditch for discharging, supplementing the dust capturing liquid to the dust capturing air duct through a liquid inlet pipe, and finally greatly reducing the dust content in the air flow entering the air duct;
when the workman gets into dust removal tunnel work, ventilation dust collecting system does not have the same mode work of workman in with the dust removal tunnel, install personnel recognition device on dust removal door II simultaneously and produce the response, control spraying dust fall system and air curtain dust removal system open, to not inhaling the dust in the dust catch dryer in the storage silo, the atomizing nozzle that sets up in dust removal tunnel the place ahead sprays water smoke and carries out full section spraying dust fall, open dust removal door I behind the spraying water smoke, close dust removal door I behind detecting the workman and passing dust removal door I, open the air curtain nozzle simultaneously and form full section air curtain, thoroughly keep apart the dust, prevent that the dust from continuing to gush into the tunnel, later stop air curtain nozzle work and open dust removal door II.
Has the advantages that:
aiming at the problems of large dust yield and large harm in the material on-well delivery-underground storage stage in the filling material delivery process, the invention constructs a comprehensive dust-settling method of ventilation dust absorption, spraying dust settling and air curtain separation, effectively reduces the dust yield in the vertical delivery process of the filling material, improves the working environment in the vertical delivery process of the filling material, effectively protects the safety of workers in working, improves the delivery efficiency and is beneficial to realizing the low-dust or dustless delivery of the filling material.
Drawings
FIG. 1 is a schematic structural view of a dust settling system in a vertical delivery process of filling materials
FIG. 2 is a top view of the ventilating and dust collecting system of the present invention
FIG. 3 is a side view of the ventilating and dust collecting system of the present invention
FIG. 4 is a schematic view of a spray dedusting system of the present invention
FIG. 5 is a schematic view of the air curtain dust-proof system of the present invention
In the figure: 1-feeding well, 2-storage bin, 3-dedusting roadway, 4-dust-collecting fan, 5-wind barrel, 6-dust-collecting wind barrel, 7-dust-collecting liquid, 8-dust-collecting net, 9-liquid inlet pipe, 10-liquid discharge pipe, 11-drainage ditch, 12-steel frame, 13-atomizing nozzle, 14-dust-isolating door I, 15-air curtain nozzle, 16-dust-isolating door II, 17-personnel identification device.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments.
As shown in fig. 1, in the dust settling system for the vertical delivery process of filling materials, a dust removal tunnel 3 is dug at the joint of the lower part of a feeding well 1 and a storage bin 2 and is connected with an adjacent tunnel, a ventilation dust collection system, an air curtain dust separation system and a spraying dust settling system are sequentially arranged in the dust removal tunnel 3, and the ventilation dust collection system, the air curtain dust separation system and the spraying dust settling system are finally communicated with the storage bin 2;
as shown in fig. 2 and 3, the ventilation and dust collection system comprises a dust collection fan 4, an air duct 5 and a dust collection air duct 6 which are connected in sequence, wherein the air duct 5 and the dust collection air duct 6 are fixed in a dust collection roadway 3 by a steel frame 12, a plurality of dust collection nets 8 are arranged in the dust collection air duct 6, the middle part of the dust collection air duct 6 is of a concave U-shaped structure, dust collection liquid 7 is arranged in the concave U-shaped structure, outlets and inlets at two sides of the dust collection air duct 6 are higher than the liquid level of the dust collection liquid 7, a liquid inlet pipe 9 is arranged above the dust collection air duct 6, a liquid discharge pipe 10 is arranged below the dust collection air duct 6, and the liquid discharge pipe 10 is connected with a drainage ditch 11 arranged in the dust collection; the dust catching nets 8 in the ventilation dust collection system are arranged in the dust catching wind barrel 6 at equal intervals, the number of the dust catching nets is 2-4, the number of the dust catching nets is determined according to the physical and chemical characteristics of dust, the characteristics of dust catching liquid, the performance of a dust collection fan and other factors,
as shown in fig. 4, the air curtain dust separation system comprises a dust separation door ii16, a plurality of groups of air curtain nozzles 15 are arranged on the dust separation door ii16 in pairs, and the nozzles of each group of air curtain nozzles 15 are horizontally arranged oppositely;
as shown in fig. 5, the spray dust-settling system comprises a dust-proof door i14, a plurality of groups of atomizing nozzles 13 are arranged on the dust-proof door i14 in pairs, and the nozzles of each group of atomizing nozzles 13 are horizontally arranged oppositely; the number of the atomizing nozzles 13 in the atomizing dust-settling system and the number of the air curtain nozzles 15 in the air curtain dust-separating system are at least 4, and the equal-spacing surfaces are arranged around the dust-removing roadway 3;
a dust-isolating door I14 is arranged on the side of the atomizing nozzle 13 far away from the dust, and the distance between the atomizing nozzle 13 and the dust-isolating door I14 is 0.5-2 m; the dust-proof door I14 is arranged on the side, close to dust, of the air curtain nozzle 15, and the distance between the air curtain nozzle 15 and the dust-proof door I14 is 2-10 m; the side far away from the dust is provided with a dust isolating door II16 with the distance of 0.5 m-2 m; the dust separation door II16 is provided with a personnel identification device 17;
and pipelines connected with a ventilation dust collection system are arranged at the tops of the dust separation doors I14 and II 16.
A dust fall method in a vertical delivery process of filling materials comprises the following steps:
when no workers work in the dust removing tunnel 3, the ventilation and dust collection system operates independently, the dust collection fan operates to enable negative pressure to be formed inside and outside the storage bin, so that dust generated in the process that filling materials are vertically delivered to the storage bin 2 through the feeding well 1 flows into the dust collection air duct 6 through pipelines at the tops of the dust separation door I14 and the dust separation door II16, the dust flows enter the dust collection air duct 6 and then collide with the dust collection liquid 7 in the dust collection air duct, the dust collection liquid 7 quickly wets and deposits a large amount of dust, when few unwetted dust flows continuously along the dust collection air duct 6, the dust collection liquid 7 collides with a dust collection net 8 arranged in the dust collection air duct 6 at equal intervals and is finally adsorbed on the dust collection net 8, the liquid discharge pipe 10 is opened according to the dust collection and deposition conditions of the dust collection air duct 6, the dust collection liquid 7 containing a large amount of dust is discharged from the liquid discharge pipe 10 to the drainage ditch 11 and then is supplemented to the dust collection air duct 6 through the liquid inlet pipe 9, finally, the dust content in the airflow entering the air duct 5 is greatly reduced;
when a worker enters the dust removal tunnel 3 to work, the ventilation and dust collection system works in the same mode that no worker is in the dust removal tunnel 3, the personnel identification device 17 installed on the dust separation door II16 responds, the opening of the spraying dust removal system and the air curtain dust removal system is controlled, aiming at dust which is not sucked into the dust collection air duct 6 in the storage bin, the atomizing nozzle 13 arranged in front of the dust removal tunnel 3 sprays water mist to perform full-section spraying dust removal, the dust separation door I14 is opened after the water mist is sprayed, the dust separation door I14 is closed after the worker is detected to pass through the dust separation door I14, the air curtain nozzle 15 is opened to form a full-section air curtain, the dust is thoroughly isolated, the dust is prevented from continuously flowing into the tunnel, and then the air curtain nozzle 15 is stopped to work and the dust separation door II 16.
The first embodiment is as follows:
a certain mine in the flat top mountain city of Henan province is a coal pressing and industrial square protection coal pillar built in a mining area, and ground gangue is transported to an underground goaf by filling mining to control surface subsidence, protect surface buildings and convert coal resources. In order to efficiently and quickly transport the surface gangue filling materials of the mining area to the underground, the mine is provided with a vertical material delivery system. The existing vertical material delivery system can generate a large amount of dust and raise dust in the delivery-underground storage stage on a material well, worsen the operating environment in the vertical delivery process of filling materials, and is not beneficial to improving the delivery efficiency of the filling materials and realizing the less-dust or dustless delivery of the filling materials, so that a dust-settling method suitable for the vertical delivery process of the filling mining materials in a mine is needed.
When no workers work in the dust removing tunnel 3, the ventilation and dust collection system operates independently, the dust collection fan 4 operates to enable negative pressure to be formed inside and outside the storage bin 2, so that dust generated in the process that filling materials are vertically delivered to the storage bin 2 through the feeding well 1 flows into the dust collection air duct 6 through pipelines at the tops of the dust separation door I and the dust separation door II, the dust flows enter the dust collection air duct 6 and then collide with the dust collection liquid 7 in the dust collection air duct 6, the dust collection liquid 7 quickly wets and deposits a large amount of dust, when a small part of non-wetted dust flows continuously flow along the dust collection air duct 6, the dust collection liquid 7 collides with a dust collection net 8 arranged in the dust collection air duct 6 at equal intervals and is finally adsorbed on the dust collection net 8, the liquid discharge pipe 10 is opened according to the dust collection and deposition conditions of the dust collection air duct 6, the dust collection liquid 7 containing a large amount of dust is discharged from the liquid discharge pipe 10 to the drainage ditch 11 and then is supplemented to the dust collection air duct 6 through the liquid inlet pipe 9, finally, the dust content in the airflow entering the air duct 5 is greatly reduced;
when workers enter the dedusting tunnel 3 to work, the personnel identification device 17 installed on the dust isolating door generates a response, the spraying dust settling system and the air curtain dust isolating system are started to process a small part of dust which is not sucked into the air duct 5 in the storage bin 2, the dust concentration is further reduced, the working environment in the tunnel is optimized, and the operation safety is guaranteed. Arrange a set of atomizing nozzle 13 and air curtain nozzle 15 respectively around the tunnel according to certain interval in dust removal tunnel 3, after this part dust gushes into dust removal tunnel 3, at first atomizing nozzle 13 work carries out full section spraying dust fall, and tunnel rear air curtain nozzle 15 work forms full section air curtain simultaneously, thoroughly keeps apart the dust, prevents that the dust from continuing to gush into the tunnel. Meanwhile, a dust isolating door I14 and a dust isolating door II16 are respectively arranged on the sides, far away from the dust, of the atomizing nozzle 13 and the air curtain nozzle 15, so that the dust is further isolated, the working environment is improved, and the dust settling efficiency is improved.
Claims (5)
1. The utility model provides a process dust fall system is delivered perpendicularly to filling material which characterized in that: a dust removal roadway (3) is dug at the joint of the lower part of the feeding well (1) and the storage bin (2) and is connected with an adjacent roadway, a ventilation dust collection system, an air curtain dust separation system and a spraying dust suppression system are sequentially arranged in the dust removal roadway (3), and the ventilation dust collection system, the air curtain dust separation system and the spraying dust suppression system are finally communicated with the storage bin (2);
the ventilation and dust collection system comprises a dust collection fan (4), an air duct (5) and a dust collection air duct (6) which are connected in sequence, wherein the air duct (5) and the dust collection air duct (6) are fixed in a dust collection roadway (3) by utilizing a steel frame (12), a plurality of dust collection nets (8) are arranged in the dust collection air duct (6), the middle part of the dust collection air duct (6) is of a concave U-shaped structure, dust collection liquid (7) is arranged in the concave U-shaped structure, outlets and inlets on two sides of the dust collection air duct (6) are higher than the liquid level of the dust collection liquid (7), a liquid inlet pipe (9) is arranged above the dust collection air duct (6), a liquid discharge pipe (10) is arranged below the dust collection air duct (6), and the liquid discharge pipe (10) is connected with a drainage ditch (11) arranged in the dust collection roadway;
the air curtain dust separation system comprises a dust separation door II (16), a plurality of groups of air curtain nozzles (15) are arranged on the dust separation door II (16) in pairs, and the nozzles of each group of air curtain nozzles (15) are horizontally arranged oppositely;
the spraying dust-settling system comprises a dust-proof door I (14), a plurality of groups of atomizing nozzles (13) are arranged on the dust-proof door I (14) in pairs, and the nozzles of each group of atomizing nozzles (13) are horizontally arranged oppositely;
and pipelines connected with a ventilation dust collection system are arranged at the tops of the dust separation door I (14) and the dust separation door II (16).
2. The vertical fill material delivery process dustfall system of claim 1, wherein: the dust catching nets (8) in the ventilation and dust collection system are arranged in the dust catching air cylinder (6) at equal intervals, the number of the dust catching nets is 2-4, and the number of the dust catching nets is determined according to the physical and chemical characteristics of dust, the characteristics of dust catching liquid, the performance of a dust collection fan and other factors.
3. The vertical fill material delivery process dustfall system of claim 1, wherein: atomizing nozzle (13) among the spraying dust fall system and air curtain nozzle (15) among the air curtain dust removal system all are 4 at least, and equidistant face arranges around dust removal tunnel (3).
4. The vertical fill material delivery process dustfall system of claim 3, wherein: a dust isolating door I (14) is arranged on one side of the atomizing nozzle (13) far away from dust, and the distance between the atomizing nozzle (13) and the dust isolating door I (14) is 0.5-2 m; the dust-proof door I (14) is arranged on the side, close to dust, of the air curtain nozzle (15), and the distance between the air curtain nozzle (15) and the dust-proof door I (14) is 2-10 m; the side far away from the dust is provided with a dust isolating door II (16), and the distance between the dust isolating door II and the dust isolating door II is 0.5-2 m; and a personnel identification device (17) is arranged on the dust-proof door II (16).
5. A method for reducing dust in a vertical filling material feeding process by using the dust reducing system for a vertical filling material feeding process according to claim 1, characterized by comprising the steps of:
when no worker works in the dust removal roadway (3), the ventilation and dust collection system operates independently, the dust collection fan operates to enable negative pressure to be formed inside and outside the storage bin, so that dust generated in the process that filling materials are vertically delivered to the storage bin (2) through the feeding well (1) flows into the dust collection air cylinder (6) through pipelines at the tops of the dust separation door I (14) and the dust separation door II (16), the dust flows into the dust collection air cylinder (6) and then collides into dust collection liquid (7) in the dust collection air cylinder, the dust collection liquid (7) quickly wets and deposits a large amount of dust, when a small amount of non-wetted dust flows continuously flow along the dust collection air cylinder (6), the dust collection liquid collides with a dust collection net (8) arranged in the dust collection air cylinder (6) at equal intervals, the dust collection net (8) is finally, the liquid discharge pipe (10) is opened according to the dust collection and deposition condition of the dust collection air cylinder (6), and the dust collection liquid (7) containing a large amount of dust is discharged from the liquid discharge pipe (10) to a drainage ditch (11) and is discharged to a drainage ditch, then, supplementing a dust catching liquid (7) to the dust catching air cylinder (6) through a liquid inlet pipe (9), and finally greatly reducing the dust content in the air flow entering the air cylinder (5);
when workers enter the dust removal tunnel (3) to work, the ventilation and dust collection system works in the same mode that no workers are in the dust removal tunnel (3), meanwhile, a personnel recognition device (17) installed on a dust isolation door II (16) generates response, the spraying and dust settling system and the air curtain dust isolation system are controlled to be opened, aiming at dust which is not sucked into a dust catching air duct (6) in a storage bin, an atomizing nozzle (13) arranged in the front of the dust removal tunnel (3) sprays water mist to carry out full-section spraying and dust settling, the dust isolation door I (14) is opened after the water mist is sprayed, the dust isolation door I (14) is closed after the workers are detected to pass through the dust isolation door I (14), meanwhile, the air curtain nozzle (15) is opened to form a full-section air curtain, dust is thoroughly isolated, the dust is prevented from continuously flowing into the tunnel, and then the air curtain nozzle (15) is stopped to work to.
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| DE2901294A1 (en) * | 1979-01-13 | 1980-07-24 | Heinz Ing Grad Hoelter | Coal mining dust extraction system - uses fixed extraction units behind cutting machine forming air curtains along coal face |
| DE3010415A1 (en) * | 1980-03-19 | 1981-09-24 | Gewerkschaft Eisenhütte Westfalia, 4670 Lünen | DEVICE-FIGHTING DEVICE IN A STREB |
| DE19853190B4 (en) * | 1998-11-18 | 2009-01-22 | Cft Gmbh Compact Filter Technic | Rotary scrubber with inclined demister |
| CN104196535B (en) * | 2014-08-19 | 2016-04-13 | 山东科技大学 | The two curtain device for reducing dust of a kind of air water for fully-mechanized mining working and dust-removing method |
| CN104373124B (en) * | 2014-09-11 | 2016-08-17 | 山东科技大学 | A kind of tunneling working face dust guard and dust-control method |
| CN104265361A (en) * | 2014-09-17 | 2015-01-07 | 扬州市江隆矿业设备有限公司 | Automatic feeding and dust removing integrating equipment of concrete pump for mine |
| CN204238942U (en) * | 2014-11-12 | 2015-04-01 | 山东科技大学 | A kind of fully-mechanized mining working dust preventive and control device |
| CN104832211A (en) * | 2015-05-06 | 2015-08-12 | 辽宁工程技术大学 | Coal mine gob area filling system |
| CN205977266U (en) * | 2016-08-17 | 2017-02-22 | 国投新集能源股份有限公司 | Mining filling material conveying system in pit |
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