CN110080761B - Dust removal device and dust removal method for side mining equipment - Google Patents
Dust removal device and dust removal method for side mining equipment Download PDFInfo
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- CN110080761B CN110080761B CN201910222220.1A CN201910222220A CN110080761B CN 110080761 B CN110080761 B CN 110080761B CN 201910222220 A CN201910222220 A CN 201910222220A CN 110080761 B CN110080761 B CN 110080761B
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- 239000000428 dust Substances 0.000 title claims abstract description 152
- 238000005065 mining Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000003245 coal Substances 0.000 claims abstract description 23
- 230000007704 transition Effects 0.000 claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 13
- 239000010959 steel Substances 0.000 claims abstract description 13
- 230000008569 process Effects 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 2
- 230000008859 change Effects 0.000 description 5
- 239000002817 coal dust Substances 0.000 description 5
- 238000001914 filtration Methods 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 238000004880 explosion Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/22—Equipment for preventing the formation of, or for removal of, dust
- E21C35/223—Equipment associated with mining machines for sucking dust-laden air from the cutting area, with or without cleaning of the air
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/24—Remote control specially adapted for machines for slitting or completely freeing the mineral
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/006—Ventilation at the working face of galleries or tunnels
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/04—Air ducts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/08—Ventilation arrangements in connection with air ducts, e.g. arrangements for mounting ventilators
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/20—Drawing-off or depositing dust
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/008—Stop safety or alarm devices, e.g. stop-and-go control; Disposition of check-valves
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Transport Of Granular Materials (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention belongs to the technical field of coal mining dust removal, and particularly relates to a dust removal device and a dust removal method for slope mining equipment. The air box is fixed on a cantilever of the coal mining machine, and an air outlet of the air box is flexibly connected with the transition section; one end of the transition section is flexibly connected with an air outlet of the air box, and the other end of the transition section is connected with an air suction port of the dust removal fan; the air outlet of the dust removal fan is connected with one end of the first unit air cylinder; the first unit air duct is hung on a steel wire rope of the first transportation unit through a hanging ring, the other end of the first unit air duct is connected with one end of the standard unit air duct through an air duct connector, the standard unit air duct is hung on the steel wire rope of the standard transportation unit through a hanging ring, the other end of the standard unit air duct is connected with the next section of standard unit air duct through an air duct connector, and the operation is continued; the telescopic air duct is hung on a steel wire rope below the platform through a hanging ring, one end of the telescopic air duct is connected with the last section of standard unit air duct, and the other end of the telescopic air duct is connected with an air inlet pipeline of the dust remover.
Description
Technical Field
The invention belongs to the technical field of coal mining dust removal, and particularly relates to a dust removal device and a dust removal method for slope mining equipment.
Background
In recent years, the production and construction of open pit coal mines in China are rapidly developed, the output of the open pit coal mines breaks through 3 hundred million tons, and the proportion of the output of the open pit coal mines to the total output of coal is increased from less than 5% to about 10%. With the rapid increase of the output of open pit coal mines in China, the amount of coal pressing on the side of China exceeds 2000 million tons every year, and resources are recycled by special side mining complete equipment.
The difference between the highwall mining and the traditional well mining in the aspects of ventilation and dust removal is as follows: because an operator can only operate equipment in the underground by relying on image information collected by a video collector arranged at the front part of the coal mining machine outside the underground, the collected video data can be ensured to be clear enough only by effectively removing dust; the dust removing device is required to adapt to the requirement of the continuously increased roadway length, and the continuation of the air duct is required to be completed outside the tunnel; due to the requirement of environmental protection, coal dust generated by coal mining cannot be discharged in an unorganized mode, and the coal dust must be reduced to be below a specified concentration before being discharged out of the underground cave. The same points are that: ventilation and dust removal measures are required to be taken in the underground to reduce the concentration of gas and coal dust.
Therefore, the slope mining complete equipment must be equipped with a dust removal device to solve the problems of improving the definition of image information, the adaptability of the dust removal device to the change of the length of the roadway, ecological environment protection, gas dust explosion suppression and the like.
Disclosure of Invention
The invention aims to provide a dust removal device for a slope mining complete equipment, which aims to solve the problems of improvement of image information definition, adaptability of the dust removal device to roadway length change, ecological environment protection, gas dust explosion suppression and the like.
The invention adopts the following technical scheme: a dust removal device for a side mining device comprises an air box, a transition section, a dust removal fan, a first unit air cylinder, a standard unit air cylinder, a telescopic air cylinder, a dust remover and an induced draft fan, wherein the air box is fixed on a cantilever of a coal mining machine, and an air outlet of the air box is flexibly connected with the transition section; one end of the transition section is flexibly connected with an air outlet of the air box, and the other end of the transition section is connected with an air suction port of the dust removal fan; the air outlet of the dust removal fan is connected with one end of the first unit air cylinder; the first unit air duct is hung on a steel wire rope of the first transportation unit through a hanging ring, the other end of the first unit air duct is connected with one end of the standard unit air duct through an air duct connector, the standard unit air duct is hung on the steel wire rope of the standard transportation unit through a hanging ring, the other end of the standard unit air duct is connected with the next section of standard unit air duct through an air duct connector, and the operation is continued; the telescopic air duct is hung on a steel wire rope below the platform through a hanging ring, one end of the telescopic air duct is connected with the last section of standard unit air duct, and the other end of the telescopic air duct is connected with an air inlet pipeline of the dust remover; the air outlet of the dust remover is connected with the air suction inlet of the induced draft fan through a pipeline; the air outlet of the induced draft fan directly exhausts the air.
Further, still include intelligent accuse wind system, including location navigation, controller, amount of wind sensor and pressure differential sensor, the position of location navigation location dust exhausting fan and dust remover, dust exhausting fan be pull-out type two-stage ventilation blower, location navigation signal connection controller, the air intake and the air outlet of dust remover set up amount of wind sensor and pressure differential sensor, amount of wind sensor and pressure differential sensor signal connection controller respectively, controller and draught fan signal connection, the controller transmits video signal for the display.
A dust removal method of a dust removal device for a side mining device is characterized in that when a coal mining machine starts to cut coal from a adit, a positioning navigation system transmits position data of a dust removal fan and a dust remover to a controller, and the controller judges that the distance between the dust removal fan and the dust remover is smaller than L1Sending a signal for starting only the primary fan to the dust removal fan; the air quantity sensor monitors the air quantity entering the dust remover in real time, the air quantity data is displayed on the display in real time through the controller, and whether the air duct in the tunnel is damaged or not can be judged through the air quantity data; the pressure difference sensor monitors the pressure value and the pressure difference of the air inlet and the air outlet of the dust remover in real time and displays the pressure value and the pressure difference on a display screen; when the length of the roadway is increased, the controller judges that the distance between the roadway and the controller is greater than L2Sending a signal for starting a secondary fan to the dust removal fan; when the length of the tunnel is further increased, if the air quantity sensor detects that the air quantity is less than Q1The air pressure of the air inlet of the dust remover is more than P1And is less than P2The controller sends a starting signal to the induced draft fan, the rotating speed of the induced draft fan is comprehensively controlled according to the air quantity and the air pressure parameter, the rotating speed of the induced draft fan is increased, the air quantity is increased, and the sensor monitors that the air quantity reaches kQ1When the air flow is in use, the rotation speed of the induced draft fan is basically kept unchanged, the process of adjusting the rotation speed is started, and the air flow is kept at kQ by adjusting the rotation speed1(ii) a If the air quantity sensor detectsThe air pressure of the air inlet of the dust remover is more than P2The controller sends out a dust cleaning signal to the dust remover; in the process, when the standard transportation unit is added, the whole dust removal system stops running, and after the standard transportation unit and the standard unit air cylinder are installed, the dust removal fan, the dust remover and the induced draft fan are started again according to the parameters before the last stop of running; when the standard transportation unit is completely withdrawn, the whole system stops running, the fan to be dedusted returns to the position near the underground opening, the control program of the intelligent air control system runs again, wherein,
L1the single-stage fan supplies air and the air quantity at the inlet of the dust remover is Q1A time-corresponding distance;
L2the two-stage fan supplies air and the air quantity at the inlet of the dust remover is Q1A time-corresponding distance;
Q1the experimental wind speed of the section area v of the Av A roadway is 0.25-0.4 m/s;
taking the empirical value of K, and taking 1.2-1.5;
P1pressure after dust removal of a dust remover;
P2the dust remover is blocked by the pressure when dust removal is needed.
Compared with the prior art, the invention is a draw-out dry dust removal device, and the air duct can continuously extend towards the head direction along with the increase of the length of the roadway. Be equipped with intelligent accuse wind system, can satisfy the requirement of different length tunnels to pull-out type dust collector amount of wind and wind pressure when tunnel length constantly increases.
The invention has the beneficial effects that:
(1) by adopting the mode that the standard unit air duct is connected to or withdrawn from the underground chamber along with the standard transportation unit, the total length of the air duct can be changed along with the length change of the transportation system, so that the air duct is suitable for different tunnel lengths;
(2) the intelligent air control system enables the whole dust removal device to be safe, efficient and energy-saving by controlling the start and stop of the dust removal fan, the dust remover and the induced draft fan, and can meet the requirements of roadways with different lengths on the air volume and the air pressure of the draw-out type dust removal device;
(3) providing high-definition image information for operators in any roadway length within a design range;
(4) the concentration of gas and dust can be effectively reduced by any roadway length in the design range;
(5) the coal dust generated in the chamber is filtered by a dust remover and then discharged, so that the environment pollution is avoided;
(6) and a dry dust removal mode is adopted, so that water resources are saved.
Drawings
FIG. 1 is an overall layout of the present invention;
FIG. 2 is a schematic illustration of a transition section of the present invention;
FIG. 3 is a control strategy diagram of the intelligent air control system of the present invention;
in the figure: 1-coal cutter, 2-air box, 3-transition section, 4-dust removal fan, 5-first unit air cylinder, 6-first transportation unit, 7-lifting ring, 8-steel wire rope, 9-air cylinder connector, 10-standard unit air cylinder, 11-standard transportation unit 12-telescopic air cylinder, 13-air quantity sensor, 14-differential pressure sensor, 15-induced draft fan, 16-dust remover, 17-platform, 18-filtering device and 19-slag discharge port.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings. As shown in fig. 1, a dust removing apparatus for a highwall mining complete set comprises an air box, a transition section, a dust removing fan, a first unit air duct, a standard unit air duct, a telescopic air duct, a dust remover and an induced draft fan;
the air box 2 is fixed on a cantilever of the coal mining machine 1, an air suction opening moves up and down along with the cantilever and is always positioned near a dust producing point when the coal mining machine 1 mines coal, and an air outlet is flexibly connected with the transition section 3; one end of the transition section 3 is flexibly connected with an air outlet of the air box 2, and the other end is connected with an air suction port of the dust removal fan 4; an air suction port of the dust removal fan 4 is connected with the transition section 3, and an air outlet is connected with the first unit air duct 5; the first unit air duct 5 is hung on a steel wire rope 8 of the first transportation unit 6 through a hanging ring 7, one end of the first unit air duct is connected with an air outlet of the dust removal fan 4, and the other end of the first unit air duct is connected with a standard unit air duct 10 through an air duct connector 9; the standard unit wind barrel 10 is hung on a steel wire rope 8 of a standard transportation unit 11 through a hanging ring 7, one end of the standard unit wind barrel is connected with the first unit wind barrel 5 through a wind barrel connector 9, and the other end of the standard unit wind barrel is connected with the next section of standard unit wind barrel 10 through the wind barrel connector 9, and the operation is continued; the telescopic air duct 12 is hung on a steel wire rope 8 below the platform 17 through a hanging ring 7, one end of the telescopic air duct is connected with the last section of standard unit air duct 10, and the other end of the telescopic air duct is connected with an air inlet pipeline of a dust remover 16; an air inlet pipeline of the dust remover 16 is connected with the telescopic air duct 12, and an air outlet is connected with an air suction port of the induced draft fan 15 through a pipeline; an air suction opening of the induced draft fan 15 is connected with an air outlet of the dust remover 16 through a pipeline, and the air outlet directly exhausts air.
Example 1:
as shown in fig. 1, after the dust removing device is started, the dust removing fan 4 sucks the gas containing coal dust from the air suction opening of the air box 2, and after the gas is primarily filtered by the filter device 18 of the transition section 3, the gas is discharged to the dust remover 16 along the first unit air duct 5, each section of standard unit air duct 10 and the telescopic air duct 12. The filtered gas meeting the emission requirements is discharged to the atmosphere through the induced draft fan 15. The standard unit wind tube 10 is connected with or withdrawn from a transportation system along with the standard transportation unit 11 to increase or decrease the total length of the wind tube, so that the total length of the wind tube meets the requirements of adapting to different tunnel depths.
As shown in fig. 2, a filtering device 14 and a sewage draining outlet 15 are arranged inside the transition section 2.
As shown in figures 1 and 3, the dust removal device is provided with an intelligent air control system, the system automatically keeps the safe, efficient and energy-saving operation of the dust removal device by controlling the starting and stopping modes of a dust removal fan 4, the starting and stopping of the ash removal of a dust remover 16 and the rotating speed of an induced draft fan 15, and can meet the requirements of roadways with different lengths on the air volume and the air pressure of the draw-out type dust removal device. When the coal mining machine 1 starts to cut coal from the adit, the positioning navigation system transmits the position data of the dust removal fan 4 and the dust remover 16 to the controller, and the controller judges that the distance between the two is less than L1Sending a signal for starting only the primary fan to the dust removal fan 4; the air quantity sensor 13 monitors the air quantity entering the dust remover 16 in real time, and displays the air quantity data on a display in real time through a controller, and whether an air duct in the tunnel is damaged or not can be judged through the air quantity data; the pressure difference sensor 14 monitors the pressure values and the pressure differences of the air inlet and the air outlet of the dust remover 16 in real time and displays the pressure values and the pressure differences on a display screen; when the length of the roadway is increased, the controller judges the distance between the roadway and the controllerGreater than L2Sending a signal for starting the secondary fan to the dust removal fan 4; when the length of the roadway is further increased, if the air quantity sensor 13 detects that the air quantity is less than Q1The wind pressure of the 16 air inlets of the dust remover is more than P1And is less than P2Then the controller sends a starting signal to the induced draft fan 15, the rotating speed of the induced draft fan 15 is comprehensively controlled according to the air quantity and the air pressure parameter, the rotating speed of the induced draft fan is increased, the air quantity is increased, the sensor monitors that the air quantity reaches kQ1When the air flow is in use, the rotation speed of the induced draft fan is basically kept unchanged, the process of adjusting the rotation speed is started, and the air flow is kept at kQ by adjusting the rotation speed1(ii) a If the air volume sensor detects that the air pressure of the air inlet of the dust remover is greater than P2The controller sends a deashing signal to the deduster 16; in the process, when the standard transportation unit 11 is added, the whole dust removal system stops running, and after the standard transportation unit 11 and the standard unit air duct 10 are installed, the dust removal fan 4, the dust remover 16 and the induced draft fan 15 are started again according to the parameters before the last stop of running; when the standard transportation unit 11 is completely withdrawn, the whole system stops running, the dust removal fan 4 returns to the position near the underground opening, and the intelligent air control system control program runs again, wherein:
L1the single-stage fan supplies air and the air quantity at the inlet of the dust remover is Q1A time-corresponding distance;
L2the two-stage fan supplies air and the air quantity at the inlet of the dust remover is Q1A time-corresponding distance;
Q1the experimental wind speed of the section area v of the Av A roadway is 0.25-0.4 m/s;
taking the empirical value of K, and taking 1.2-1.5;
P1pressure after dust removal of a dust remover;
P2the dust remover is blocked by the pressure when dust removal is needed.
The dust removal fan is a draw-out type two-stage fan, and the intelligent air control system determines to start one stage or two stages according to the position of the dust removal fan and the air pressure of the dust remover inlet. The transition section is used for connecting an air box and a dust removal fan, a filtering device is arranged in the transition section, large particles in dust-containing gas can be filtered, and a slag discharge port is formed. The standard unit air duct can be connected to or withdrawn from the underground chamber outdoor along with the standard transportation unit, and the total length of the air duct can be changed along with the length change of the transportation system, so that the air duct is suitable for different tunnel lengths. The telescopic air duct has the advantages that the telescopic amount of the telescopic air duct can meet the length of one standard transportation unit, and the length of the telescopic air duct changes along with the position change of the last section of standard transportation unit. The dust remover is a bag-type dust remover, a pressure difference sensor and an air volume sensor are arranged on an air inlet pipeline of the dust remover, a lead of the sensor is connected with a controller, the pressure difference sensor is used for detecting the pressure and the pressure difference between the air inlet pipeline and an air outlet pipeline of the dust remover, and the air volume sensor is used for detecting the air volume entering the dust remover. The draught fan is matched with a motor which is a variable frequency motor, a control signal line is connected with a controller, and the pressure difference distribution inside and outside the filter bag of the dust remover can be changed by controlling the air quantity of the draught fan.
The dust removal fan sucks dust-containing airflow from an air inlet of the air box, the dust-containing airflow is primarily filtered by the transition section, then is discharged to the dust remover along the first unit air duct, the standard unit air duct and the telescopic air duct in sequence, and is discharged by the draught fan after being filtered.
Claims (1)
1. A dust removal method of a dust removal device for a highwall mining device is characterized in that: the device comprises an air box (2), a transition section (3), a dust removal fan (4), a first unit air cylinder (5), a standard unit air cylinder (10), a telescopic air cylinder (12), a dust remover (16) and an induced draft fan (15), wherein the air box (2) is fixed on a cantilever of a coal mining machine (1), and an air outlet of the air box (2) is flexibly connected with the transition section (3); one end of the transition section (3) is flexibly connected with the air outlet of the air box (2), and the other end is connected with the air suction port of the dust removal fan (4); the air outlet of the dust removal fan (4) is connected with one end of the first unit air cylinder (5); a first unit air duct (5) is hung on a steel wire rope (8) of a first transportation unit (6) through a hanging ring (7), the other end of the first unit air duct (5) is connected with one end of a standard unit air duct (10) through an air duct connector (9), the standard unit air duct (10) is hung on the steel wire rope (8) of a standard transportation unit (11) through the hanging ring (7), the other end of the standard unit air duct (10) is connected with the next section of standard unit air duct (10) through the air duct connector (9), and the operation is continued in this way; a telescopic air duct (12) is hung on a steel wire rope (8) below the platform (17) through a hanging ring (7), one end of the telescopic air duct (12) is connected with the last section of standard unit air duct (10), and the other end of the telescopic air duct (12) is connected with an air inlet pipeline of a dust remover (16); the air outlet of the dust remover (16) is connected with the air suction inlet of the induced draft fan (15) through a pipeline; the air outlet of the induced draft fan (15) directly exhausts air, and the intelligent air control system comprises a positioning navigation system, a controller, an air quantity sensor (13) and a pressure difference sensor (14), wherein the positioning navigation system positions the positions of a dust removal fan (4) and a dust remover (16), the dust removal fan is a draw-out two-stage fan, the positioning navigation system is in signal connection with the controller, the air inlet and the air outlet of the dust remover (16) are provided with the air quantity sensor (13) and the pressure difference sensor (14), the air quantity sensor (13) and the pressure difference sensor (14) are respectively in signal connection with the controller, the controller is in signal connection with the induced draft fan (15), and the controller transmits video signals to a display;
when the coal mining machine (1) starts to cut coal from the underground mouth, the positioning navigation system transmits the position data of the dust removal fan (4) and the dust remover (16) to the controller, and the controller judges that the distance between the dust removal fan and the dust remover is smaller than L1Sending a signal for starting only the primary fan to the dust removal fan (4); the air quantity sensor (13) monitors the air quantity entering the dust remover (16) in real time, and displays the air quantity data on the display in real time through the controller, and whether the air cylinder in the tunnel is damaged or not can be judged through the air quantity data; the pressure difference sensor (14) monitors the pressure value and the pressure difference of an air inlet and an air outlet of the dust remover (16) in real time and displays the pressure value and the pressure difference on a display screen; when the length of the roadway is increased, the controller judges that the distance between the roadway and the controller is greater than L2Sending a signal for starting a secondary fan to the dust removal fan (4); when the length of the roadway is further increased, if the air quantity sensor (13) detects that the air quantity is less than Q1The wind pressure of the air inlet of the dust remover (16) is more than P1And is less than P2Then the controller sends a starting signal to the induced draft fan (15), the rotating speed of the induced draft fan (15) is comprehensively controlled according to the air quantity and the air pressure parameters, and the induced draft fanThe rotating speed is increased, the air quantity is increased, and the air quantity monitored by the sensor reaches kQ1When the air flow is in use, the rotation speed of the induced draft fan is basically kept unchanged, the process of adjusting the rotation speed is started, and the air flow is kept at kQ by adjusting the rotation speed1(ii) a If the air volume sensor detects that the air pressure of the air inlet of the dust remover is greater than P2The controller sends out a dust cleaning signal to the dust remover (16); in the process, when the standard transportation unit (11) is added, the whole dust removal system stops running, and after the standard transportation unit (11) and the standard unit air duct (10) are installed, the dust removal fan (4), the dust remover (16) and the induced draft fan (15) are started again according to the parameters before the last stop running; when the standard transportation unit (11) is completely withdrawn, the whole system stops running, the fan (4) to be dedusted returns to the position near the underground opening, the control program of the intelligent air control system runs again, wherein,
L1the single-stage fan supplies air and the air quantity at the inlet of the dust remover is Q1A time-corresponding distance;
L2the two-stage fan supplies air and the air quantity at the inlet of the dust remover is Q1A time-corresponding distance;
Q1taking 0.25-0.4m/s for the section area of the roadway A and the empirical wind speed v;
taking the empirical value of K, and taking 1.2-1.5;
P1pressure after dust removal of a dust remover;
P2the dust remover is blocked by the pressure when dust removal is needed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910222220.1A CN110080761B (en) | 2019-03-22 | 2019-03-22 | Dust removal device and dust removal method for side mining equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910222220.1A CN110080761B (en) | 2019-03-22 | 2019-03-22 | Dust removal device and dust removal method for side mining equipment |
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| CN110080761A CN110080761A (en) | 2019-08-02 |
| CN110080761B true CN110080761B (en) | 2020-09-11 |
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| CN201910222220.1A Active CN110080761B (en) | 2019-03-22 | 2019-03-22 | Dust removal device and dust removal method for side mining equipment |
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| CN112065491A (en) * | 2020-09-21 | 2020-12-11 | 中铁十八局集团有限公司 | Tunnel construction ventilation method |
| CN112228147B (en) * | 2020-10-20 | 2021-09-17 | 中国矿业大学(北京) | Rapid and remote fire disaster situation distinguishing method based on trace gas method |
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