Two-stage dust removal and purification system of mine ore drawing drop shaft
Technical Field
The utility model relates to a dust pelletizing system of ore deposit swift current well head is put in underground mine belongs to mine ventilation dust removal technical field.
Background
The ore is widely transported by the ore pass through the underground mine, and the ore pass through the ore pass is an important channel for lifting and transporting the ore in the underground production process of the mine. Especially when the underground ore is unloaded by a multi-middle section high drop shaft, the loose ore is limited by a well wall, and generates piston-like motion in the falling process, because the drop height of ore drawing is large, the air in the drop shaft is compressed rapidly, and the ore generates strong impact air pressure in the falling process, so that dust-containing air flow is gushed out from an ore unloading branch drop shaft port in a large quantity, the air of an underground ore unloading chamber and an ore unloading combined lane is seriously polluted, and the dust overflows the rear lane often, enters a production lane at the side of an air source along with the air flow, and the underground fresh air flow and the working face are polluted. If the dust cannot be effectively controlled and purified, the dust can be suspended in the underground air environment for a long time under the disturbance of the air flow of the operation post environment, which not only pollutes the operation environment, wastes ore raw materials and accelerates the abrasion of equipment, but also seriously threatens the physical and psychological health of operators.
The dust removal of the mine underground ore drawing chute is always a big problem in the underground dust treatment of mines at home and abroad. At present, dust removal of an underground ore pass generally adopts the mode of increasing mine ventilation volume to dilute dust, but the ventilation volume is increased to increase ventilation energy consumption, only the effect of diluting the dust of the ore pass is achieved, and the problem of pollution of the dust generated by the ore pass to an underground area cannot be thoroughly solved; also adopt drop shaft mouth spraying dust fall measure, but the dust that the drop shaft mouth space produced can not be covered completely to the water smoke of drop shaft mouth spraying dust fall device spun, and the contact time of water smoke and space dust is short simultaneously, and the dust of drop shaft mouth is hardly purified completely to single spraying dust fall, and when the drop shaft mouth dirt airflow concentration changed, there was not corresponding automatically regulated control measure, and the spraying dust removal effect was difficult to guarantee.
Disclosure of Invention
The utility model aims at providing a composite dust removal purification system for underground mine ore pass dust treatment, which has the advantages of high dust removal efficiency, low energy consumption, low operating cost, simple structure and convenient installation, aiming at the pollution problem of the existing mine underground ore pass dust.
In order to realize the above purpose of the utility model, the utility model discloses the two-stage dust removal purification system of mine ore drawing drop shaft adopts following technical scheme:
the utility model discloses a two-stage dust removal purification system of a mine ore drawing chute is formed by combining a spray dust removal device, a dustproof sealing curtain, a wet dust removal fan device, a sensor and a PLC control system; the spray dust removal device comprises a sprayer, and the sprayer is arranged on a top plate above an ore drawing chamber of the chute; the dustproof sealing curtain is vertically hung and installed on a top plate above a sliding mine roadway where the ore drawing chamber is located; the wet dust removal fan device is formed by sequentially connecting a dust hood, an elbow, a ventilation dust removal pipeline and a wet dust removal fan, wherein the dust hood is arranged at the bottom of a dustproof sealing curtain of an air outlet of a linked roadway of a sliding mine, and the wet dust removal fan is arranged in the downwind side direction of a middle roadway, is tightly attached to the inner side of the middle roadway and is fixed by adopting a wet dust removal fan fixing pedestal; the sensor comprises an infrared sensor and a dust concentration sensor, the infrared sensor is arranged on a top plate above an ore drawing chamber of the chute and on a top plate at the junction of a dustproof sealing curtain, and the dust concentration sensor is arranged below the ventilation and dust removal pipeline; and the PLC control system is respectively connected with the infrared sensor, the dust concentration sensor, the sprayer and the wet dust removal fan.
The spray dust removal device is composed of two rows of sprayers and connected water pipelines, wherein each row of sprayers are respectively arranged on the left side and the right side of a top plate above the ore drawing chamber, and the spraying directions of nozzles of the two rows of sprayers are oppositely and crossly arranged.
The dustproof sealing curtain is made by clamping waste belts for mine transportation on steel pipes, and the steel pipes are arranged on a top plate above a sliding mine connecting roadway where the ore drawing chamber is located.
The utility model discloses two-stage dust removal purification system of mine ore drawing drop shaft adopts the spray dust collector, wet-type dust removal fan device two-stage dust removal mode of above-mentioned structure to the sealing of additional dustproof sealing curtain, block, improved dust collection efficiency greatly, synthesize prevent, control dirt effect and show, energy-conserving effect is showing. The PLC control system automatically controls the start and stop of the spray dust removal device, regulates and controls the start and stop of the wet dust removal fan and carries out frequency conversion regulation on the wet dust removal fan; the purified air flow can be recycled, the underground air supply and exhaust amount is reduced, the purposes of controlling the trend of the dusty air flow, purifying the dusty air flow and adjusting the underground air amount are achieved, and meanwhile, the energy consumption is greatly reduced; the PLC control system is arranged, the infrared sensor and the dust concentration sensor are additionally arranged, and automatic control of the dust removal system and dust removal by ventilation according to the air volume change are achieved.
Drawings
FIG. 1 is a schematic plan structural arrangement diagram of a two-stage dust removal purification system of a mine ore pass of the present invention;
FIG. 2 is a schematic view of the two-stage dust removal purification system of the ore pass of the mine of the present invention;
fig. 3 is a schematic view of the vertical connection of the wet dust removal fan device according to the present invention.
The reference signs are: 1-main draw shaft; 2-branch draw shaft; 3-an ore drawing chamber; 4, dust-proof sealing curtains; 5-sprayer; 6-dust hood; 7-bending the pipe; 8-ventilating and dedusting pipelines; 9-wet dust removal fan; 10-wet dust removal fan fixing pedestal; 11-middle section roadway; 12-an infrared sensor; 13-a dust concentration sensor; and 14-a PLC control system.
Detailed Description
In order to better describe the utility model, the two-stage dust removal and purification system of the mine ore drawing chute of the utility model is further described in detail with the attached drawings.
By figure 1 the utility model discloses the plane structure of the two-stage dust removal clean system of mine ore drawing drop shaft arranges the schematic diagram and combines figure 2, figure 3 to see, the utility model discloses the two-stage dust removal clean system of mine ore drawing drop shaft comprises spray dust collector, dustproof sealing curtain 4, wet dedusting fan device, sensor and PLC control system 14 combination, and PLC control system 14 installs the leeward side direction in middle section tunnel 11. The spray dust removal device consists of two rows of sprayers 5 and connected water pipelines, the water pipelines and the sprayers 5 are fixed by adopting angle steel, the connected sprayers 5 are arranged below the angle steel, each row of sprayers 5 are respectively arranged at the left side and the right side of a top plate above the ore drawing chamber 3, and the spraying directions of nozzles of the two rows of sprayers 5 are obliquely downward and oppositely crossed, so that the sprayed mist can cover the whole section of the upper part of the ore drawing chamber 3; after the dust airflow generated during ore drawing operation of the ore pass is flushed out from the chamber opening of the ore drawing chamber 3, the water mist generated by the spray dust removal device captures and coagulates the dust airflow on site, so that the particle size of the dust is increased, and the weight is increased and settled. The dustproof sealing curtain 4 is formed by clamping a waste belt for mine transportation on a steel pipe, the steel pipe is arranged at the top plate above a sliding mine tunnel in which the ore drawing chamber 3 is positioned, the dustproof sealing curtain 4 is vertically hung and arranged at the top plate above the sliding mine tunnel in which the ore drawing chamber 3 is positioned through the steel pipe, and an air outlet of the sliding mine tunnel at the upper side of the ore drawing chamber 3 is sealed; the wet dust removal fan device is formed by sequentially connecting a dust hood 6, an elbow 7, a ventilation dust removal pipeline 8 and a wet dust removal fan 9, wherein the dust hood 6 is arranged at the bottom of a dustproof sealing curtain 4 at an air outlet of a linked roadway of a sliding mine and is mainly used for sucking dust airflow which is not settled by the spray dust removal device, and the wet dust removal fan 9 is arranged in the downwind side direction of a middle roadway 11 and is tightly attached to the inner side of the middle roadway 11 and fixed by adopting a wet dust removal fan fixing pedestal 10; the sensors comprise an infrared sensor 12 and a dust concentration sensor 13, the infrared sensor 12 is arranged on a top plate above the ore drawing chamber 3 of the ore pass and on a top plate at the junction of the dustproof sealing curtain 4, and the sprayer 5 is controlled to be started and stopped; the dust concentration sensor 13 is arranged below the ventilation and dust removal pipeline 8 and is used for monitoring the dust concentration entering the dust hood 6 and the ventilation and dust removal pipeline 8; the PLC control system 14 is respectively connected with the infrared sensor 12, the dust concentration sensor 13, the sprayer 5 and the wet dust removal fan 9, the PLC control system 14 receives data collected by the dust concentration sensor 13 and the sprayer 5, and adjusts and controls the sprayer 5 and the wet dust removal fan 9, so that automatic control of the sprayer 5 and the wet dust removal fan 9 and on-demand ventilation and dust removal according to air volume change are realized.
The utility model discloses two-stage dust removal purification system of mine ore drawing drop shaft adopts spray dust collector, wet dedusting fan device's two-stage dust removal mode, is assisting dustproof sealing curtain to seal, block overflowing the dust, opening of 14 automatic control sprayers 5 of PLC control system and stopping, opening of regulation control wet dedusting fan 9 stop and carry out frequency conversion adjustment to it. When the main orepass 1 unloads ore, the ore falls to generate strong impact airflow, and a large amount of impact airflow is gushed out from the branch orepass 2. When the ore drawing chute starts ore unloading operation, when ore drawing operation equipment (such as a scraper) touches a top-opening dustproof sealing curtain 4 to enter a tunnel where the chute is located, an infrared sensor 12 installed on the top plate of the tunnel where the chute is located sends an electric signal to a chute spraying control box, the spraying control box controls a chute sprayer 5 to start spraying, when the ore drawing equipment finishes pouring ore and returns to a tunnel junction, the infrared sensor 12 sends an electric signal to the chute spraying control box again, and the chute spraying control box controls the chute sprayer 5 to stop spraying. Because the ore drawing dust yield of the ore pass is very large, dust is difficult to completely collect by spray dust removal, and part of dust still escapes from the gap at the bottom of the dustproof sealing curtain 4 at the air outlet of the ore pass, a dust hood 6 and a ventilation dust removal pipeline 8 are arranged at the gap, and a wet dust removal fan 9 is arranged on the inner side of the middle roadway 11 in the downwind direction. After the wet dust removal fan 9 is installed, the chute tunnel is enabled to form negative pressure due to the action of the wet dust removal fan 9, and dust-containing gas flows through the dust hood 6 and the ventilation dust removal pipeline 8 and is led into the wet dust removal fan for further purification. Meanwhile, a dust concentration sensor 13 is arranged below the ventilation and dust removal pipeline 8, and the wet dust removal fan 9 is subjected to frequency conversion regulation by detecting the concentration change of dust in the pipeline, so that ventilation and dust removal as required are realized, and the energy consumption of a dust removal system is greatly saved.