CN109488362B - Wet dust collector for coal mine - Google Patents
Wet dust collector for coal mine Download PDFInfo
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- CN109488362B CN109488362B CN201811444519.3A CN201811444519A CN109488362B CN 109488362 B CN109488362 B CN 109488362B CN 201811444519 A CN201811444519 A CN 201811444519A CN 109488362 B CN109488362 B CN 109488362B
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- pipeline
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- 239000000428 dust Substances 0.000 title claims abstract description 160
- 239000003245 coal Substances 0.000 title claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 130
- 239000007788 liquid Substances 0.000 claims abstract description 72
- 239000004744 fabric Substances 0.000 claims abstract description 44
- 239000007921 spray Substances 0.000 claims abstract description 30
- 238000005507 spraying Methods 0.000 claims description 25
- 238000007664 blowing Methods 0.000 claims description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 15
- 238000009825 accumulation Methods 0.000 claims description 14
- 238000004064 recycling Methods 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 238000001802 infusion Methods 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 239000002002 slurry Substances 0.000 description 15
- 238000001914 filtration Methods 0.000 description 11
- 238000007599 discharging Methods 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 6
- 238000011084 recovery Methods 0.000 description 5
- 230000003116 impacting effect Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000010419 fine particle Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000005422 blasting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 206010035653 pneumoconiosis Diseases 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
Classifications
-
- 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
- E21F5/02—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying
- E21F5/04—Spraying barriers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
-
- 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
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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)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention belongs to the technical field of underground coal mine dust removal equipment, and particularly relates to a wet dust collector for a coal mine; a controller is arranged on the mine tunnel; a first electromagnetic water valve and a water outlet pipe are arranged in the middle of the first spray disc; the water outlet pipe is communicated with the water tank, and the lower end of the water outlet pipe faces the center of the liquid collecting tank; the first electromagnetic water valve is arranged on the water outlet pipe and is electrically connected with the controller through a wire; the liquid collecting tank comprises a tank body, a filter plate, a first elastic air bag, a first air pipe and an elastic rope, wherein one end of the filter plate is hinged with the end part of the tank body, and the first elastic air bag is positioned at the lower end of the other end of the filter plate; the first electromagnetic water valve is electrically connected with the controller through a wire; the filter plate comprises a filter cloth and a plate body for fixing the filter cloth; one end of the first air pipe is provided with a filter cloth end, the pipe orifice of the first air pipe faces downwards along the surface of the filter plate, one end of the filter plate of the first elastic air bag is arranged, and the other end of the first air pipe is communicated with the first elastic air bag; the invention can reduce the problem of blocking when the equipment runs by dredging the equipment.
Description
Technical Field
The invention belongs to the technical field of underground coal mine dust removal equipment, and particularly relates to a wet dust collector for a coal mine.
Background
In the coal mining process, a large amount of dust is generated, along with the continuous improvement of the mechanization degree of coal mine production, the dust content in the coal mine tunnel is higher and higher, the whole operation site is filled, the dust is also flying in the whole tunnel, the environment is polluted, the health of coal workers is seriously influenced, and the coal workers become high-risk groups which are easy to infect pneumoconiosis, so that the dust falling work in the coal mine tunnel is very necessary. The existing dust removing method can not effectively reduce the concentration of underground dust and can not automatically remove dust, so the existing dust removing method has the problems of low dust removing efficiency, high energy consumption and environmental protection. In view of the above-mentioned problems, the present invention provides a water circulation type wet spraying dust removal device for underground coal mines, which solves the above-mentioned problems.
Patent document 1: a hydrologic cycle formula wet blasting dust collector for colliery in pit, application number: 2017206004645
In the above patent document 1, the above document discloses a mine tunnel, a liquid accumulation box is arranged on the left side of the bottom of an inner cavity of the mine tunnel, a water tank is arranged on the right side of the top of the mine tunnel, a first spray disk is arranged on the right side of the top of the inner cavity of the mine tunnel, a circulating pump is arranged on the outer wall of the circulating pipeline, a dust catching cover is arranged on the right side of the liquid accumulation box, suction fans are arranged on the left side and the right side of the top of the dust catching cover, a primary filter screen is arranged in the inner cavity of the dust catching cover, a dust exhaust channel is arranged on the top of the dust catching cover, an air outlet filter screen is arranged at the left end of the dust exhaust channel, and a second spray disk is arranged in the inner cavity of the dust exhaust channel; the device not only humidifies the air in the mine, but also effectively removes dust in the air, reduces the incidence rate of workers, enhances the safety of work under the mine, and brings great convenience for the construction of the mine; however, the liquid collecting tank and the liquid accumulation tank of the device are often blocked, so that the whole device is often blocked and cannot normally operate.
Disclosure of Invention
In order to make up the defects of the prior art, the wet dust collector for the coal mine provided by the invention aims to improve the dust collection efficiency in the coal mine and reduce the problem of blocking during the running of the equipment by dredging the equipment.
The technical scheme adopted for solving the technical problems is as follows: the invention relates to a wet dust collector for a coal mine, which comprises a mine tunnel; a liquid accumulation box is arranged at the left side of the bottom of the inner cavity of the mine tunnel; a filter screen is arranged at the top of the inner cavity of the effusion tank; a water tank is arranged on the right side of the top of the mine tunnel; a return pipeline is arranged on the right wall of the effusion tank; the liquid accumulation box is connected with the water tank through a return pipeline; the outer wall of the backflow pipeline is provided with a control valve; a first spraying disc is arranged on the right side of the top of the inner cavity of the mine tunnel; the right wall of the water tank is provided with a circulating pipeline; the water tank is connected with the first spraying disc through a circulating pipeline; the outer wall of the circulating pipeline is provided with a circulating pump; a dust catching cover is arranged on the right side of the effusion tank; suction fans are arranged on the left side and the right side of the top of the dust catching cover; a primary filter screen is arranged in the inner cavity of the dust catching cover; dust concentration sensors are arranged on the left and right side walls of the inner cavity of the dust catching cover; the top of the dust catching cover is provided with a dust discharging channel; the left end of the dust exhaust channel penetrates through the top of the mine tunnel; an air outlet filter screen is arranged at the left end of the dust exhaust channel; the bottom of the dust exhaust channel is provided with a mud recycling pipeline; the dust exhaust channel is connected with the effusion tank through a mud recycling pipeline; the outer wall of the mud recycling pipeline is provided with a regulating valve; an infusion pipeline is arranged at the top of the left wall of the water tank; a second spray disc is arranged in the inner cavity of the dust exhaust channel; the water tank is connected with the second spray disc through a transfusion pipeline; a liquid collecting tank is arranged at the bottom of the inner cavity of the mine tunnel; a liquid collecting pipeline is arranged on the right wall of the liquid collecting tank; the liquid collecting groove is connected with the water tank through a liquid collecting pipeline; the outer wall of the liquid collecting pipeline is provided with a purifying pump; the dust catching cover is connected with the dust exhaust passage through a connecting flange; the outer wall of the first spray disc is uniformly provided with first spray heads; the outer wall of the second spray disc is uniformly provided with second spray heads; the left side and the right side of the second spray disk are respectively provided with a water baffle; the outer wall of the air outlet filter screen is uniformly provided with air outlet filter holes; primary filter holes are uniformly formed in the outer wall of the primary filter screen, and the pore diameter of the air outlet filter holes is larger than that of the primary filter holes;
A controller is arranged on the mine tunnel; a first electromagnetic water valve and a water outlet pipe are arranged in the middle of the first spray disc; the water outlet pipe is communicated with the water tank, and the lower end of the water outlet pipe faces the center of the liquid collecting tank; the first electromagnetic water valve is arranged on the water outlet pipe and is electrically connected with the controller through a wire; the liquid collecting tank comprises a tank body, a filter plate, a first elastic air bag, a first air pipe and an elastic rope, wherein one end of the filter plate is hinged with the end part of the tank body, and the first elastic air bag is positioned at the lower end of the other end of the filter plate; the first electromagnetic water valve is electrically connected with the controller through a wire; the filter plate comprises a filter cloth and a plate body for fixing the filter cloth; a plurality of air holes are arranged on the first elastic air bag, and the upper end of the first elastic air bag is propped against the lower end of the filter plate; one end of the first air pipe is provided with a filter cloth end, the pipe orifice of the first air pipe faces downwards along the surface of the filter plate, one end of the filter plate of the first elastic air bag is arranged at the pipe orifice of the first air pipe, and the other end of the first air pipe is communicated with the first elastic air bag; one end of the elastic rope is connected with one end of a filter plate with a first elastic air bag below, and the other end of the elastic rope is connected with the top end of the groove body. When the dust collecting device works, when dust in a mine tunnel is excessive, the dust collecting device detects through a dust concentration sensor, a suction fan is started to absorb the dust in the mine tunnel, then primary filtering is carried out through a primary filter screen in a dust collecting cover, fine particles enter a dust discharging tunnel after passing through the primary filter screen, a water tank carries out wet spraying treatment on the dust in the dust discharging tunnel through a liquid conveying pipeline and a second spray disk, on one hand, the dust-removed gas is discharged through an air outlet filter screen, on the other hand, formed dust slurry is recovered through a regulating valve and a slurry recovery pipeline and is introduced into a liquid collecting box, the filter screen arranged in the liquid collecting box filters the dust slurry entering the liquid collecting box, then liquid recovered in the liquid collecting box is conveyed into the water tank through a return pipeline and a control valve to carry out water recovery, in addition, the water tank carries out water supply through a circulating pipeline and a circulating pump to the first spray dust removing, the sprayed liquid is collected through a liquid collecting tank in the mine tunnel and is recovered into the water tank after being treated through the liquid collecting pipeline and the liquid collecting tank, and the wet spraying dust removing pump is realized; in the downward spraying process of the first spraying disc, the first electromagnetic water valve on the water outlet pipe is controlled by the controller to be opened intermittently, so that water in the water tank intermittently impacts the filter plate of the liquid collecting tank, and water with dust flows into the tank body after being filtered by the filter cloth; because one end of the filter plate is hinged with the groove body, water impacting on the filter plate can lead the filter plate to incline downwards, on one hand, the filter plate inclines downwards, dust on the filter cloth can be accumulated on one side of the filter plate with the elastic air bag at the lower end, and part of the dust can be pushed out of the filter plate; on the other hand, the first elastic air bag is compressed by the filter plate, and the first elastic air bag blows air along the surface of the filter plate through the first air pipe, so that dust on the filter cloth is accumulated at one end of the filter plate with the first elastic air bag downwards, the filter cloth can be prevented from being blocked by the filter plate for a long time, better filtering of water with dust of the filter cloth is facilitated, and after the water with dust falls to the tank body, the filter plate is pulled by the elastic rope to recover the horizontal state.
An air blowing plate is arranged below the middle part of the filter plate; the inside of the blowing plate is hollow, and a second air pipe is communicated between the blowing plate and the first air pipe. When the filter plate is in operation, the first elastic air bag is used for introducing air to the air blowing plate, the air blowing plate is used for blowing air towards the middle part of the filter plate, so that dust adhered to the filter cloth is blown up, the dredging of the filter plate is facilitated, and meanwhile, the air blowing plate and the first air pipe are matched for operation, so that the dust on the filter plate can be better discharged.
A plurality of first elastic air bags are arranged at the lower end of the filter plate, and the first elastic air bags are mutually communicated. During operation, the elastic air bags of the first number work simultaneously, so that dust on the filter plate can be better discharged, and the efficiency of dust on the filter plate is improved.
The air outlet filter screen is provided with an active carbon filter layer and two filter cloth layers; the activated carbon filter layer is positioned between the two filter cloth layers. During operation, dust in the blown gas can be filtered through the filter cloth layer, gas in the gas can be adsorbed through the activated carbon filter layer, the gas content in the air in the mine tunnel is reduced, and the safety of personnel in the mine tunnel is facilitated.
The top of the effusion tank is provided with an effusion water inlet, and the outer wall of the effusion tank is provided with a motor; the accumulated liquid water inlet is connected with a mud recycling pipeline; fixing pieces are arranged on the left side wall and the right side wall of the inner cavity of the effusion tank; the filter screen is arranged between the two groups of fixing pieces, and the inner walls of the two groups of fixing pieces are provided with stop blocks; the stop block is positioned at the bottom of the filter screen; the filter screen comprises a mud filter screen; a seepage film is arranged at the bottom of the mud filter screen; the motor shaft extends into the effusion tank, the motor is electrically connected with the controller through a wire, and a cam is arranged at the end part of the motor shaft; the lower end of the cam is provided with a second elastic air bag; the second elastic air bag is communicated with an air inlet pipe and a plurality of first air holes; the air inlet pipe is provided with a one-way air inlet valve. When the device works, the controller controls the motor to rotate, so that the cam rotates to stir water and slurry in the liquid accumulation box, and the liquid accumulation box is prevented from being blocked due to precipitation of suspended matters in filtered water; simultaneously, the cam rotates to extrude the second elastic air bag, so that the second elastic air bag blows air to the outside to spray water, and the deposition of suspended matters in water after being filtered by the seepage film can be avoided; when the second elastic air bag recovers, on one hand, air is sucked through the air inlet pipe, and on the other hand, the second elastic air bag sucks water through the air hole.
And a linear stirring plate is arranged on one side end surface of the cam. The linear stirring plate is arranged on the cam, so that the stirring effect of the cam can be enhanced.
And a cushion block is arranged between the mud filter screen and the seepage film. The spacer blocks are arranged to change the distance between the mud filter screen and the seepage film, so that the phenomenon that the seepage film is blocked due to the fact that the mud filter screen is completely attached to the seepage film is avoided, and the filtration efficiency of the seepage film is improved.
The beneficial effects of the invention are as follows:
1. the simple mine dust removal humidifying device can automatically detect dust in a mine underground roadway, so that dust and mist can be removed, energy is saved, the problems of low efficiency, poor effect and high energy consumption of a traditional dust removal method are fully solved, the underground dust concentration is effectively reduced, the simple mine dust removal humidifying device not only humidifies air in a mine, but also effectively removes dust in the air, the incidence of workers is reduced, the safety of underground work is enhanced, and great convenience is brought to mine construction.
2. The invention can impact water to the filter plate through the water outlet pipe, on one hand, the filter plate can be washed, the water impacting to the filter plate can lead the filter plate to incline downwards, dust on the filter cloth can be accumulated on one side of the filter plate with the elastic air bag at the lower end, and part of dust is pushed out of the filter plate; the first elastic air bag blows air along the surface of the filter plate through the first air pipe, so that dust on the filter cloth is accumulated at one end of the filter plate with the first elastic air bag downwards, the filter cloth can be prevented from being blocked by the filter plate for a long time, and better filtering of dust-bearing water of the filter cloth is facilitated.
3. According to the invention, the air blowing plate blows air towards the middle part of the filter plate, so that dust adhered to the filter cloth is blown up, the dredging of the filter plate is facilitated, and meanwhile, the air blowing plate works together with the first air pipe, so that the dust on the filter plate can be better discharged.
Drawings
FIG. 1 is a schematic view of the overall structure of a wet dust collector for coal mines of the invention;
FIG. 2 is a schematic diagram of the connection of the outlet pipe of the present invention to the first shower tray;
FIG. 3 is a schematic view of the internal structure of the sump according to the present invention;
FIG. 4 is a schematic view of the internal structure of the liquid accumulation tank of the present invention;
FIG. 5 is a schematic diagram of the structure of the air outlet filter screen of the present invention;
In the figure: mine tunnel 1, liquid accumulation tank 2, filter screen 3, slurry filter screen 31, liquid seepage film 32, water tank 4, return pipe 5, control valve 6, first spray tray 7, circulation pipe 8, circulation pump 9, dust catching hood 10, suction fan 11, primary filter screen 12, dust discharge channel 13, air outlet filter screen 14, activated carbon filter layer 141, filter cloth layer 142, slurry recovery pipe 15, regulating valve 16, transfusion pipe 17, second spray tray 18, dust concentration sensor 19, liquid collection tank 20, liquid collection pipe 21, purge pump 22, liquid accumulation water inlet 23, fixing piece 24, stopper 25, tank 26, filter plate 27, filter cloth 271, plate 272, first elastic air bag 28, first air pipe 29, water outlet pipe 34, blowing plate 42, second air pipe 41, motor 57, cam 51, second elastic air bag 52, air inlet pipe 53, one-way air inlet valve 54, straight stirring plate 55, and cushion 56.
Detailed Description
A wet dust collector for coal mine according to the present invention will be described below with reference to fig. 1 to 5.
As shown in fig. 1 to 5, the wet dust collector for coal mines of the invention comprises a mine tunnel 1; a liquid accumulation box 2 is arranged at the left side of the bottom of the inner cavity of the mine tunnel 1; a filter screen 3 is arranged at the top of the inner cavity of the effusion tank 2; a water tank 4 is arranged on the right side of the top of the mine tunnel 1; the right wall of the effusion tank 2 is provided with a return pipeline 5; the effusion tank 2 is connected with the water tank 4 through a return pipeline 5; the outer wall of the return pipe 5 is provided with a control valve 6; a first spray disc 7 is arranged on the right side of the top of the inner cavity of the mine tunnel 1; the right wall of the water tank 4 is provided with a circulating pipeline 8; the water tank 4 is connected with a first spray disc 7 through a circulating pipeline 8; the outer wall of the circulating pipeline 8 is provided with a circulating pump 9; a dust catching cover 10 is arranged on the right side of the effusion tank 2; suction fans 11 are arranged on the left side and the right side of the top of the dust catching cover 10; the inner cavity of the dust catching cover 10 is provided with a primary filter screen 12; dust concentration sensors 19 are arranged on the left and right side walls of the inner cavity of the dust catching cover 10; the top of the dust catching cover 10 is provided with a dust discharging channel 13; the left end of the dust exhaust channel 13 penetrates through the top of the mine tunnel 1; an air outlet filter screen 14 is arranged at the left end of the dust exhaust channel 13; the bottom of the dust exhaust channel 13 is provided with a mud recycling pipeline 15; the dust exhaust channel 13 is connected with the effusion tank 2 through a mud recycling pipeline 15; the outer wall of the mud recycling pipeline 15 is provided with a regulating valve 16; the top of the left wall of the water tank 4 is provided with an infusion pipeline 17; a second spray disc 18 is arranged in the inner cavity of the dust exhaust channel 13; the water tank 4 is connected with a second spray disc 18 through a transfusion pipeline 17; a liquid collecting tank 20 is arranged at the bottom of the inner cavity of the mine tunnel 1; a liquid collecting pipeline 21 is arranged on the right wall of the liquid collecting tank 20; the liquid collecting tank 20 is connected with the water tank 4 through a liquid collecting pipeline 21; the outer wall of the liquid collecting pipeline 21 is provided with a purifying pump 22; the dust catching cover 10 is connected with the dust exhaust channel 13 through a connecting flange; the outer wall of the first spray disc 7 is uniformly provided with first spray heads; the outer wall of the second spray disc 18 is uniformly provided with second spray heads; water baffles are arranged on the left side and the right side of the second spray disc 18; the outer wall of the air outlet filter screen 14 is uniformly provided with air outlet filter holes; primary filter holes are uniformly formed in the outer wall of the primary filter screen 12, and the pore diameter of the air outlet filter holes is larger than that of the primary filter holes; wherein,
A controller is arranged on the mine tunnel 1; a first electromagnetic water valve and a water outlet pipe 34 are arranged in the middle of the first spray disc 7; the water outlet pipe 34 is communicated with the water tank 4, and the lower end of the water outlet pipe 34 faces the center of the liquid collecting tank 20; the first electromagnetic water valve is arranged on the water outlet pipe 34 and is electrically connected with the controller through a wire; the liquid collecting tank 20 comprises a tank body 26, a filter plate 27, a first elastic air bag 28, a first air pipe 29 and an elastic rope, wherein one end of the filter plate 27 is hinged with the end part of the tank body 26, and the first elastic air bag 28 is positioned at the lower end of the other end of the filter plate 27; the filter plate 27 includes a filter cloth 271 and a plate 272 to which the filter cloth 271 is fixed; a plurality of air holes are arranged on the first elastic air bag 28, and the upper end of the first elastic air bag 28 is propped against the lower end of the filter plate 27; one end of the first air pipe 29 is provided with a filter cloth 271 end, the mouth of the first air pipe 29 is provided with one end of a filter plate 27 of a first elastic air bag 28 downwards along the surface of the filter plate 27, and the other end of the first air pipe 29 is communicated with the first elastic air bag 28; one end of the elastic rope is connected with one end of a filter plate 27 with a first elastic air bag 28 below, and the other end of the elastic rope is connected with the top end of the groove body 26. When the dust collector works, when the dust in the mine tunnel 1 is excessive, the dust concentration sensor 19 is used for detecting, the suction fan 11 is started to absorb the dust in the mine tunnel 1, then the primary filter screen 12 in the dust collecting cover 10 is used for carrying out primary filtration, fine particles enter the dust discharge tunnel 13 after passing through the primary filter screen 12, the water tank 4 is used for carrying out wet spraying treatment on the dust in the dust discharge tunnel 13 through the infusion pipeline 17 and the second spraying disc 18, on one hand, the dedusted gas is discharged through the air outlet filter screen 14, on the other hand, the formed dust slurry is recycled through the regulating valve 16 and the slurry recycling pipeline 15 and is introduced into the liquid collecting box 2, the filter screen 3 arranged in the liquid collecting box 2 is used for filtering the dust slurry entering the liquid collecting box 2, then the liquid recovered in the liquid collecting box 2 is conveyed into the water tank 4 through the reflux pipeline 5 and the control valve 6, water is recovered, in addition, the water tank 4 is used for supplying water to the first spraying disc 7 through the circulation pipeline 8 and the circulation pump 9, and carrying out wet spraying treatment on the dust in the mine tunnel 1 is carried out wet spraying treatment on the dust collecting tunnel 1, on the other hand, the dust slurry is recycled through the circulation pipeline 20 and the water collecting pump 22 is used for realizing wet treatment in the water collecting and the water collecting box 4 through the circulation pump 21; wherein,
In the downward spraying process of the first spraying disk 7, the controller controls the electromagnetic water valve I on the water outlet pipe 34 to be opened intermittently, so that water in the water tank 4 intermittently impacts the filter plate 27 of the liquid collecting tank 20, and the water with dust is filtered by the filter cloth 271 and flows into the tank body 26; because one end of the filter plate 27 is hinged with the groove body 26, water impacting on the filter plate 27 can enable the filter plate 27 to incline downwards, on one hand, the filter plate 27 inclines downwards, so that dust on the filter cloth 271 can be accumulated on one side of the filter plate 27 with an elastic air bag at the lower end, and part of dust can be pushed out of the filter plate 27; on the other hand, the first elastic air bag 28 is compressed by the filter plate 27, and the first elastic air bag 28 blows air along the surface of the filter plate 27 through the first air pipe 29, so that dust on the filter cloth 271 is accumulated at one end of the filter plate 27 with the first elastic air bag 28 downwards, the filter cloth 271 can be prevented from being blocked by the filter plate 27 for a long time, better filtering of water with dust by the filter cloth 271 is facilitated, and after the water with dust falls to the groove 26, the filter plate 27 is pulled by the elastic rope to restore to a horizontal state.
An air blowing plate 42 is arranged below the middle part of the filter plate 27; the inside of the blowing plate 42 is hollow, and a second air pipe 41 is communicated between the blowing plate 42 and the first air pipe 29. When the filter plate 27 is in operation, the first elastic air bag 28 is used for introducing air to the air blowing plate 42, the air blowing plate 42 is used for blowing air towards the middle of the filter plate 27, so that dust adhered to the filter cloth 271 is blown up, dredging of the filter plate 27 is facilitated, and meanwhile, the air blowing plate 42 and the first air pipe 29 are matched for working, so that the dust on the filter plate 27 can be better discharged.
A plurality of first elastic air bags 28 are arranged at the lower end of the filter plate 27, and the plurality of first elastic air bags 28 are communicated with each other. In operation, the plurality of first elastic air bags 28 work simultaneously, which is beneficial to better discharging dust on the filter plate 27 and improves the efficiency of discharging dust on the filter plate 27.
The air outlet filter screen 14 is provided with an active carbon filter layer 141 and two filter cloth layers 142; the activated carbon filter layer 141 is located between two filter cloth layers 142. During operation, dust in the blown gas can be filtered through the filter cloth layer 142, gas in the gas can be adsorbed through the activated carbon filter layer 141, so that the gas content in the air in the mine tunnel 1 is reduced, and the safety of personnel in the mine tunnel 1 is facilitated.
The top of the effusion tank 2 is provided with an effusion water inlet 23, and the outer wall of the effusion tank 2 is provided with a motor 57; the accumulated liquid water inlet 23 is connected with the slurry recovery pipeline 15; the left and right side walls of the inner cavity of the effusion tank 2 are provided with fixing pieces 24; the filter screen 3 is arranged between two groups of fixing pieces 24, and the inner walls of the two groups of fixing pieces 24 are provided with stop blocks 25; the stop block 25 is positioned at the bottom of the filter screen 3; the filter screen 3 comprises a mud filter screen 31; a seepage film 32 is arranged at the bottom of the mud filter screen 31; the shaft of the motor 57 extends into the effusion tank 2, the motor 57 is electrically connected with the controller through a wire, and the end part of the shaft of the motor 57 is provided with a cam 51; the lower end of the cam 51 is provided with a second elastic air bag 52; the second elastic air bag 52 is communicated with an air inlet pipe 53 and a plurality of first air holes; the intake pipe 53 is provided with a one-way intake valve 54. When the device works, the controller controls the motor 57 to rotate, so that the cam 51 rotates to stir water and slurry in the liquid accumulation box 2, and the liquid accumulation box 2 is prevented from being blocked due to precipitation of suspended matters in filtered water; simultaneously, the cam 51 rotates to extrude the second elastic air bag 52, so that the second elastic air bag 52 blows air to spray water to the outside, and the deposition of suspended matters in water filtered by the seepage film 32 can be avoided; when the second elastic air bag 52 is restored, on the one hand, air is sucked through the air inlet pipe 53, and on the other hand, the second elastic air bag 52 sucks water through the air hole.
The cam 51 is provided with a linear stirring plate 55 on one side end surface. The in-line stirring plate 55 is provided on the cam 51 to enhance the stirring effect of the cam 51.
A cushion block 56 is arranged between the mud filter screen 31 and the seepage film 32. The spacer 56 is arranged to change the interval between the mud filter screen 31 and the seepage film 32, so that the seepage film 32 is prevented from being blocked due to the fact that the mud filter screen 31 is completely attached to the seepage film 32, and the filtration efficiency of the seepage film 32 is improved.
The specific working procedure is as follows:
When the dust in the mine tunnel 1 is excessive, the dust concentration sensor 19 is used for detecting the dust, the suction fan 11 is started to absorb the dust in the mine tunnel 1, then the primary filter screen 12 in the dust catching cover 10 is used for carrying out primary filtration, fine particles enter the dust discharge tunnel 13 after passing through the primary filter screen 12, the water tank 4 is used for carrying out wet spraying treatment on the dust in the dust discharge tunnel 13 through the liquid conveying pipeline 17 and the second spraying disc 18, on one hand, the gas after dust removal is discharged through the air outlet filter screen 14, on the other hand, the formed dust slurry is recycled through the regulating valve 16 and the slurry recycling pipeline 15 and is introduced into the liquid collecting box 2, the filter screen 3 arranged in the liquid collecting box 2 is used for filtering the dust slurry entering the liquid collecting box 2, then the liquid recovered in the liquid collecting box 2 is used for carrying out water recovery through the reflux pipeline 5 and the control valve 6, in addition, the water tank 4 is used for supplying water to the first spraying disc 7 through the circulating pipeline 8 and the circulating pump 9, and carrying out wet spraying dust removal on the mine tunnel 1 is carried out wet spraying treatment on the dust in the mine tunnel 1, on the sprayed liquid is used for carrying out the dust removal through the circulating pipeline 20 and the water collecting pump 22 and the water collecting and the wet spraying treatment is carried out the wet spraying treatment in the water collecting and the water collecting tank 4 is realized after the water collecting and the water collecting tank is collected through the circulating pipeline 20 and the circulating pump 21 and the water collecting pipeline is used for collecting the water collecting dust; wherein,
In the downward spraying process of the first spraying disk 7, the controller controls the electromagnetic water valve I on the water outlet pipe 34 to be opened intermittently, so that water in the water tank 4 intermittently impacts the filter plate 27 of the liquid collecting tank 20, and the water with dust is filtered by the filter cloth 271 and flows into the tank body 26; because one end of the filter plate 27 is hinged with the groove body 26, water impacting on the filter plate 27 can enable the filter plate 27 to incline downwards, on one hand, the filter plate 27 inclines downwards, so that dust on the filter cloth 271 can be accumulated on one side of the filter plate 27 with an elastic air bag at the lower end, and part of dust can be pushed out of the filter plate 27; on the other hand, the first elastic air bag 28 is compressed by the filter plate 27, and the first elastic air bag 28 blows air along the surface of the filter plate 27 through the first air pipe 29, so that dust on the filter cloth 271 is accumulated at one end of the filter plate 27 with the first elastic air bag 28 downwards, the filter cloth 271 can be prevented from being blocked by the filter plate 27 for a long time, better filtering of water with dust by the filter cloth 271 is facilitated, and after the water with dust falls to the groove 26, the filter plate 27 is pulled by the elastic rope to restore to a horizontal state.
The control valve in the invention is a direct-acting electromagnetic valve; the first electromagnetic water valve is a ZW series electromagnetic valve; the one-way air inlet valve is a CL-type or CH-type one-way valve; the motor is a stepping motor; the controller is a PLC controller.
Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the scope of the present invention.
Claims (4)
1. A wet dust collector for coal mines, which comprises a mine tunnel (1); a liquid accumulation box (2) is arranged at the left side of the bottom of the inner cavity of the mine tunnel (1); a filter screen (3) is arranged at the top of the inner cavity of the effusion tank (2); a water tank (4) is arranged on the right side of the top of the mine tunnel (1); a return pipeline (5) is arranged on the right wall of the effusion tank (2); the effusion tank (2) is connected with the water tank (4) through a return pipeline (5); the outer wall of the backflow pipeline (5) is provided with a control valve (6); a first spray disc (7) is arranged on the right side of the top of the inner cavity of the mine tunnel (1); the right wall of the water tank (4) is provided with a circulating pipeline (8); the water tank (4) is connected with the first spraying disc (7) through a circulating pipeline (8); the outer wall of the circulating pipeline (8) is provided with a circulating pump (9); a dust catching cover (10) is arranged on the right side of the effusion tank (2); suction fans (11) are arranged on the left side and the right side of the top of the dust catching cover (10); the inner cavity of the dust catching cover (10) is provided with a primary filter screen (12); dust concentration sensors (19) are arranged on the left side wall and the right side wall of the inner cavity of the dust catching cover (10); the top of the dust catching cover (10) is provided with a dust exhaust channel (13); the left end of the dust exhaust channel (13) penetrates through the top of the mine tunnel (1); an air outlet filter screen (14) is arranged at the left end of the dust exhaust channel (13); the bottom of the dust exhaust channel (13) is provided with a mud recycling pipeline (15); the dust exhaust channel (13) is connected with the effusion tank (2) through a mud recycling pipeline (15); an adjusting valve (16) is arranged on the outer wall of the mud recycling pipeline (15); an infusion pipeline (17) is arranged at the top of the left wall of the water tank (4); the inner cavity of the dust exhaust channel (13) is provided with a second spray disc (18); the water tank (4) is connected with a second spraying disc (18) through a transfusion pipeline (17); a liquid collecting tank (20) is arranged at the bottom of the inner cavity of the mine tunnel (1); a liquid collecting pipeline (21) is arranged on the right wall of the liquid collecting groove (20); the liquid collecting groove (20) is connected with the water tank (4) through a liquid collecting pipeline (21); the outer wall of the liquid collecting pipeline (21) is provided with a purifying pump (22); the method is characterized in that: a controller is arranged on the mine tunnel (1); a first electromagnetic water valve and a water outlet pipe (34) are arranged in the middle of the first spray disc (7); the water outlet pipe (34) is communicated with the water tank (4), and the lower end of the water outlet pipe (34) faces the center of the liquid collecting tank (20); the first electromagnetic water valve is arranged on the water outlet pipe (34) and is electrically connected with the controller through a wire; the liquid collecting tank (20) comprises a tank body (26), a filter plate (27) with one end hinged with the end part of the tank body (26), a first elastic air bag (28) positioned at the lower end of the other end of the filter plate (27), a first air pipe (29) and an elastic rope; the first electromagnetic water valve is electrically connected with the controller through a wire; the filter plate (27) comprises a filter cloth (271) and a plate body (272) for fixing the filter cloth (271); a plurality of air holes are arranged on the first elastic air bag (28), and the upper end of the first elastic air bag (28) is propped against the lower end of the filter plate (27); one end of the first air pipe (29) is provided with a filter cloth (271), the pipe orifice of the first air pipe (29) faces downwards along the surface of the filter plate (27) and is provided with one end of the filter plate (27) of the first elastic air bag (28), and the other end of the first air pipe (29) is communicated with the first elastic air bag (28); one end of the elastic rope is connected with one end of a filter plate (27) with a first elastic air bag (28) below, and the other end of the elastic rope is connected with the top end of the groove body (26);
An air blowing plate (42) is arranged below the middle part of the filter plate (27); the inside of the blowing plate (42) is hollow, and a second air pipe (41) is communicated between the blowing plate (42) and the first air pipe (29);
A plurality of first elastic air bags (28) are arranged at the lower end of the filter plate (27), and the plurality of first elastic air bags (28) are communicated with each other;
The air outlet filter screen (14) is provided with an active carbon filter layer (141) and two filter cloth layers (142); the activated carbon filter layer (141) is located between two filter cloth layers (142).
2. A wet dust collector for coal mine as set forth in claim 1 wherein: the top of the effusion tank (2) is provided with an effusion water inlet (23), and the outer wall of the effusion tank (2) is provided with a motor (57); the accumulated liquid water inlet (23) is connected with a mud recycling pipeline (15); fixing pieces (24) are arranged on the left side wall and the right side wall of the inner cavity of the effusion tank (2); the filter screen (3) is arranged between two groups of fixing pieces (24), and the inner walls of the two groups of fixing pieces (24) are provided with stop blocks (25); the stop block (25) is positioned at the bottom of the filter screen (3); the filter screen (3) comprises a mud filter screen (31); the bottom of the mud filter screen (31) is provided with a seepage film (32); the crankshaft of the motor (57) extends into the effusion tank (2), and a cam (51) is arranged at the end part of the crankshaft of the motor (57); the lower end of the cam (51) is provided with a second elastic air bag (52); an air inlet pipe (53) and a plurality of first air holes are communicated with the second elastic air bag (52); the air inlet pipe (53) is provided with a one-way air inlet valve (54).
3. A wet dust collector for coal mine as set forth in claim 2 wherein: a linear stirring plate (55) is arranged on one side end surface of the cam (51).
4. A wet dust collector for coal mine as set forth in claim 3 wherein: a cushion block (56) is arranged between the mud filter screen (31) and the seepage film (32).
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| CN201811444519.3A CN109488362B (en) | 2018-11-29 | 2018-11-29 | Wet dust collector for coal mine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811444519.3A CN109488362B (en) | 2018-11-29 | 2018-11-29 | Wet dust collector for coal mine |
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| CN109488362B true CN109488362B (en) | 2024-05-24 |
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| BE792995A (en) * | 1971-12-23 | 1973-04-16 | Boehler & Co Ag Geb | DUST EVACUATION DEVICE FOR |
| CN202090941U (en) * | 2011-06-16 | 2011-12-28 | 张东卫 | Underground pneumatically-controlled device for automatically atomizing in coal mine |
| CN103790618A (en) * | 2014-03-05 | 2014-05-14 | 王宽 | Mine water bath type orifice blowout prevention and dust removal device |
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