CN111963169B - Vortex fog curtain device for development machine and use method - Google Patents
Vortex fog curtain device for development machine and use method Download PDFInfo
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- CN111963169B CN111963169B CN202010979278.3A CN202010979278A CN111963169B CN 111963169 B CN111963169 B CN 111963169B CN 202010979278 A CN202010979278 A CN 202010979278A CN 111963169 B CN111963169 B CN 111963169B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
Abstract
The vortex fog curtain device comprises a vortex fog curtain device main body module, a water mist generating unit, a vortex generating unit, a water mist angle adjusting module and a vortex wind direction adjusting module, wherein the water mist angle adjusting module and the vortex wind direction adjusting module are arranged on the vortex fog curtain main body module along the circumferential direction, a plurality of water mist generating units are installed on the water mist angle adjusting module, and a plurality of vortex generating units are installed on the vortex wind direction adjusting module. The water mist direction and the wind direction can be adjusted according to actual operation requirements, more scene requirements are met, and meanwhile, the water mist control system is simple and stable in structure, safe and reliable.
Description
Technical Field
The invention belongs to the technical field of ventilation and dust removal of mining engineering, and particularly relates to a vortex fog curtain device for a heading machine and a using method of the vortex fog curtain device.
Background
The dust damage of the coal mine driving face is serious in China, the coal mine comprehensive excavator is widely used in a coal mine driving tunnel, a large amount of dust and noise are generated, and the dust can bring health hazards to workers in a driving working face, so that the dust falling operation must be carried out when the excavator cuts coal. A great deal of research is carried out on the coal mine fully-mechanized excavation dust prevention problem at home and abroad. At the present stage, in order to reduce the dust concentration in a tunneling working face, a conventional spraying dust-settling mode is generally adopted, that is, a water mist nozzle is installed at a tunneling machine body, a cutting arm of the tunneling machine and other positions, and is used for directly spraying to a coal wall through the water mist nozzle, the particle size of mist drops sprayed by the conventional spraying dust-settling mode cannot be too small, and the conventional spraying dust-settling mode has a limited dust-settling effect because the mist drops have larger particle size and cannot play a good capturing effect on inhalation dust, and the inhalable dust is very harmful to the health of workers. Secondly, the water consumption of conventional spraying is large, the water mist nozzle directly sprays to the coal wall, water drops can be formed after the water mist impacts the coal wall, along with the continuous spraying process, a large amount of tax accounting can be formed in the tunneling working face, and the working environment of the tunneling working face is worse.
The patent publication of the invention is CN106285673A entitled vortex atomization dust-settling device suitable for the heading machine, and the technical scheme is provided, the vortex atomization dust-settling device suitable for the heading machine is provided, the catching effect of absorbable dust is improved, vortex-shaped water mist is formed, a cutting head of the heading machine is fully wrapped by the vortex-shaped water mist, the dust is prevented from dissipating, the dust-settling effect is improved, the water consumption is greatly reduced, and the working environment of a heading working face is improved. This technical scheme has improved the dust fall effect, but has following not enough:
1. the spraying angle of the water mist spray head cannot be adjusted, and the spraying angle needs to be adjusted in some operation scenes.
2. The air outlet wind direction angle cannot be adjusted, the air outlet wind direction angle needs to be adjusted in some operation scenes, and the best dust fall effect needs to be achieved by jointly adjusting the water mist spraying angle and the air outlet wind direction angle according to actual scenes.
3. The structure is complex.
In order to overcome the defects of the prior art. The invention aims to provide a vortex fog curtain device for a heading machine and a using method thereof, and aims to solve the problems.
Disclosure of Invention
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a vortex fog curtain device for entry driving machine, includes vortex fog curtain device main part module, water smoke generation unit, vortex generation unit, water smoke angle modulation module and vortex wind direction adjusting module, vortex fog curtain main part module is last to be provided with water smoke angle modulation module and vortex wind direction adjusting module along circumference, install a plurality of water smoke generation units on the water smoke angle modulation module, vortex wind direction adjusting module is last to install a plurality of vortexes and generate the unit.
The water mist generating unit comprises a water mist spray head, a water mist spray head connector, a water pipe and a high-pressure water pump; the water spray nozzle is connected with one end of a water pipe through a water spray nozzle connector, the other end of the water pipe is connected with a high-pressure water pump, and the high-pressure water pump is communicated with a water supply source.
The water mist angle adjusting module comprises an annular water mist adjusting block, a water mist nozzle angle adjusting block II is uniformly arranged on the outer circle of the annular water mist adjusting block along the circumferential direction, the water mist nozzle angle adjusting block II is connected with one end of a water mist angle adjusting connecting rod through a bolt, the other end of the water mist adjusting rod is connected with the water mist nozzle angle adjusting block I through a bolt, the water mist nozzle angle adjusting block is sleeved at the rear end of the water mist nozzle, a water mist nozzle fixing block is arranged in the middle of the water mist nozzle, a water mist angle adjusting rod is arranged on the end face of the annular water mist adjusting block, the water mist nozzle angle adjusting block I, the water mist angle adjusting connecting rod and the water mist nozzle angle adjusting block II form a crank block structure, the water mist angle adjusting rod moves along the axial direction to drive the annular water mist adjusting block to move, and further drive all the water mist angle adjusting connecting rods connected to the annular water mist adjusting block to move, thereby driving the water mist spray head to rotate.
The vortex generating unit comprises an air outlet nozzle, an air inlet pipeline of the air outlet nozzle and an air inlet connector of the air outlet nozzle; air outlet nozzle air inlet pipeline one end is connected with the air outlet nozzle, and the other end is connected with air outlet nozzle air inlet connector one end, and the air outlet nozzle air inlet connector other end is connected with the tuber pipe, and the tuber pipe is connected with high pressure positive blower.
Vortex wind direction adjusting module includes cyclic annular wind direction regulating block, the disc evenly is provided with wind direction regulating block two along circumference in the cyclic annular wind direction regulating block, and wind direction regulating block two passes through the bolt and is connected with wind direction adjusting connecting rod one end, and the wind direction adjusting connecting rod other end passes through bolt and wind direction regulating block one and is connected with the air-out nozzle, is provided with the wind direction on the cyclic annular wind direction regulating block excircle and adjusts the pole, air-out nozzle, wind direction regulating block one, wind direction adjusting connecting rod, wind direction regulating block two constitute a slider-crank structure, the wind direction is adjusted and is moved about the pole, and the control is moved about driving cyclic annular wind direction regulating block, drives all wind direction adjusting connecting rod movements of connecting on cyclic annular wind direction regulating block, drives the air-out nozzle and rotates.
The vortex fog curtain device main body module comprises a vortex fog curtain main body, a panel, a water mist spray head window, an air outlet nozzle window and an air outlet nozzle fixing sleeve; the vortex fog curtain comprises a vortex fog curtain main body, wherein two rows of long holes I are uniformly formed in the outer circumferential surface of the rear end of the vortex fog curtain main body along the circumferential direction, a first connecting seat is uniformly formed in the outer circumferential surface of the front end along the circumferential direction, an air outlet nozzle window is uniformly formed in the front end circular table surface along the circumferential direction, two connecting seats II are symmetrically formed in two sides of the air outlet nozzle window, a water fog generating unit is installed on the outer circumferential surface of the vortex fog curtain main body through a sleeved annular water fog adjusting block, a vortex generating unit is installed on the outer circumferential surface of the vortex fog curtain main body through a sleeved annular water fog adjusting block and a sleeved annular air direction adjusting block, the vortex generating unit is arranged corresponding to the long hole I of the middle rear end, an air outlet nozzle on the vortex generating unit is connected with the air outlet nozzle fixing sleeve and the bolt on the vortex fog curtain main body, a vortex fog curtain shell is sleeved outside the vortex fog curtain shell, and the rear end of the vortex curtain shell is connected with a connecting pipe, and an air pipe and a water pipe are arranged in the connecting pipe, a water mist spray head window is uniformly arranged at the front end panel of the vortex fog curtain shell along the circumferential direction, a water mist spray head is arranged in the water mist spray head window, and a second long hole through which an air supply direction adjusting rod and a water mist angle adjusting rod penetrate is formed in the vortex fog curtain shell.
A use method of a vortex fog curtain device for a heading machine comprises the following steps:
starting a high-pressure fan and a high-pressure water pump, conveying the generated high-pressure gas to each air outlet nozzle through an air inlet pipeline of the air outlet nozzle to form vortex, and conveying water to each water mist spray head through a water pipe to form water mist; when the direction angle of the water mist needs to be adjusted, the water mist adjusting rod is moved along the axial direction to drive the annular water mist adjusting block to move axially, all the water mist angle adjusting connecting rods connected to the annular water mist adjusting block are driven to move, and the water mist spray head is driven to rotate, so that the angle of the water mist spray head is adjusted; when the wind direction needs to be adjusted, the wind direction adjusting rod moves along the axial direction to drive the annular wind direction adjusting block to move left and right, all wind direction adjusting connecting rods connected to the annular wind direction adjusting block are driven to move, the wind outlet nozzle is driven to rotate, the wind direction is adjusted, the maximum and strongest fog curtain is formed together, and the dust settling effect is improved.
The invention has the beneficial effects that:
the vortex fog curtain device for the development machine is simplified, the direction of water fog and the direction of wind can be adjusted according to actual operation requirements, more scene requirements are met, and meanwhile, the vortex fog curtain device is simple and stable in structure, safe and reliable.
The vortex fog curtain device for the development machine adopts a simplified structural design, is simple and convenient to install and is convenient to maintain; the adjustment of the water mist direction and the wind direction is simple and convenient, and different water mist directions and wind directions can form different mist curtain sizes to meet different scene requirements; in a larger roadway and a larger tunneling working surface, a larger range of fog screens is needed, and a larger fog screen capture range can be realized by adjusting the direction and the direction of water mist; similarly, in a smaller roadway and a smaller tunneling working surface, dust is concentrated, and a smaller and stronger fog curtain is needed to realize efficient capture; in addition, when the tunneling head works towards a certain direction, dust is locally concentrated on the working face, and efficient capture can be achieved by adjusting the size of the fog screen.
Drawings
FIG. 1 is a first view schematic diagram of the overall structure of the vortex fog curtain device for the development machine according to the invention;
FIG. 2 is a second perspective view of the overall structure of the vortex fog curtain device for the heading machine according to the invention;
FIG. 3 is a schematic diagram of the internal structure of the vortex fog curtain device for the heading machine;
FIG. 4 is a schematic view of a vortex generating unit of the vortex curtain device for the heading machine according to the present invention;
1-panel, 2-water mist nozzle window, 3-air outlet nozzle window, 4-air outlet nozzle fixing sleeve, 5-water mist nozzle, 6-air outlet nozzle, 7-water mist angle adjusting rod, 8-air direction adjusting rod, 9-connecting pipe, 10-water mist nozzle fixing block, 11-connecting seat I, 12-water mist nozzle angle adjusting block I, 13-water mist angle adjusting connecting rod, 14-water mist nozzle angle adjusting block II, 15-annular water mist adjusting block, 16-vortex fog screen main body, 17-connecting seat II, 18-air outlet nozzle air inlet pipe, 19-air outlet nozzle air inlet connector, 20-air direction adjusting block I, 21-air direction adjusting connecting rod, 22-air direction adjusting block II, 23-annular air direction adjusting block, 24-vortex fog screen shell, 25-long hole one, 26-long hole two.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1 to 4, a vortex fog curtain device for a heading machine comprises a vortex fog curtain device main body module, a water mist generation unit, a vortex generation unit, a water mist angle adjustment module and a vortex wind direction adjustment module, wherein the vortex fog curtain device main body module is provided with the water mist angle adjustment module and the vortex wind direction adjustment module along the circumferential direction, the water mist angle adjustment module is provided with a plurality of water mist generation units, and the vortex wind direction adjustment module is provided with a plurality of vortex generation units.
The water mist generating unit comprises a water mist spray head 5, a water mist spray head connector, a water pipe and a high-pressure water pump; the water mist spray head 5 is connected with one end of a water pipe through a water mist spray head connector, the other end of the water pipe is connected with a high-pressure water pump, and the high-pressure water pump is communicated with a water supply source.
The water mist angle adjusting module comprises an annular water mist adjusting block 15, a water mist spray head angle adjusting block II 14 is uniformly welded on the outer circle of the annular water mist adjusting block 15 along the circumferential direction, the water mist spray head angle adjusting block II 14 is connected with one end of a water mist angle adjusting connecting rod 13 through a bolt, the other end of the water mist adjusting rod is connected with a water mist spray head angle adjusting block I12 through a bolt, the water mist spray head angle adjusting block I12 is sleeved at the rear end of a water mist spray head 5, a water mist spray head fixing block 10 is arranged in the middle of the water mist spray head 5, a water mist angle adjusting rod 7 is arranged on the end face of the annular water mist adjusting block 15, the water mist spray head 5, the water mist spray head angle adjusting block I12, the water mist angle adjusting connecting rod 13 and the water mist spray head angle adjusting block II 14 form a crank-slider structure, the water mist angle adjusting rod 7 moves along the axial direction to drive the annular water mist adjusting block 15 to move axially, and then all the water mist angle adjusting connecting rods 13 connected to the annular water mist adjusting block 15 are driven to move, so that the water mist nozzle 5 is driven to rotate.
The vortex generating unit comprises an air outlet nozzle 6, an air outlet nozzle air inlet pipeline 18 and an air outlet nozzle air inlet connector 19; air outlet nozzle air inlet pipeline 18 one end is connected with air outlet nozzle 6, and the other end is connected with 19 one end of air outlet nozzle air inlet connector, and the 19 other ends of air outlet nozzle air inlet connector are connected with the tuber pipe, and the tuber pipe is connected with high pressure positive blower.
Vortex wind direction adjusting module includes cyclic annular wind direction regulating block 23, the disc has wind direction regulating block two 22 along circumference uniform weld in cyclic annular wind direction regulating block 23, and wind direction regulating block two 22 passes through the bolt to be connected with wind direction regulating connecting rod 21 one end, and the wind direction regulating connecting rod 21 other end passes through bolt and wind direction regulating block one 20 to be connected with air outlet nozzle 6, is provided with wind direction adjusting rod 8 on the cyclic annular wind direction regulating block 23 excircle, air outlet nozzle 6, wind direction regulating block one 20, wind direction regulating connecting rod 21, wind direction regulating block two 22 constitute a slider-crank structure, wind direction adjusting rod 8 is along axial displacement, drives cyclic annular wind direction regulating block 23 axial displacement, drives all wind direction regulating connecting rod 21 motions of connecting on cyclic annular wind direction regulating block 23, drives air outlet nozzle 6 and rotates.
The vortex fog curtain device main body module comprises a vortex fog curtain main body 16, a panel 1, a water mist spray head window 2, an air outlet nozzle window 3 and an air outlet nozzle fixing sleeve 4; the vortex fog curtain comprises a vortex fog curtain main body 16, wherein two rows of long holes I25 are uniformly formed in the outer circular surface of the rear end of the vortex fog curtain main body 16 along the circumferential direction, a first connecting seat 11 is uniformly welded in the outer circular surface of the front end along the circumferential direction, an air outlet nozzle window 3 is uniformly formed in the circular surface of the front end along the circumferential direction, a second connecting seat 17 is symmetrically welded in two sides of the air outlet nozzle window 3, a water fog generating unit is installed on the outer circular surface of the vortex fog curtain main body 16 through a sleeved annular water fog adjusting block 15, a vortex generating unit is installed on the outer circular surface of the vortex fog curtain main body 23 through a sleeved annular water fog adjusting block 23, the annular water fog adjusting block 15 is arranged corresponding to the long hole I25 of the rear end, a water fog nozzle 5 on the water fog generating unit is connected with the first connecting seat 11 through a water fog nozzle fixing block 10 and a bolt, the annular water fog adjusting block 23 is arranged corresponding to the long hole I25 of the middle rear end, an air outlet nozzle 6 on the vortex generating unit is connected with the second connecting seat 17 through an air outlet nozzle fixing sleeve 4 and a bolt, and a vortex fog curtain shell 24 is sleeved outside the vortex curtain main body 16, the rear end of the vortex fog curtain shell 24 is connected with the connecting pipe 9, an air pipe and a water pipe are arranged in the connecting pipe 9, a water mist nozzle window 2 is uniformly arranged at the position of the front end panel 1 of the vortex fog curtain shell 24 along the circumferential direction, a water mist nozzle 5 is arranged in the water mist nozzle window 2, and a second long hole 26 for the wind direction adjusting rod 8 and the water mist angle adjusting rod 7 to pass through is formed in the vortex fog curtain shell 24.
A use method of a vortex fog curtain device for a heading machine comprises the following steps:
starting a high-pressure fan and a high-pressure water pump, delivering the generated high-pressure gas to each air outlet nozzle 6 through an air outlet nozzle air inlet pipeline 18 to form vortex, and delivering water to each water mist spray nozzle 5 through a water pipe to form water mist; when the direction angle of the water mist needs to be adjusted, the water mist adjusting rod is moved along the axial direction to drive the annular water mist adjusting block 15 to move axially, all the water mist angle adjusting connecting rods 13 connected to the annular water mist adjusting block 15 are driven to move, and the water mist spray head 5 is driven to rotate, so that the angle of the water mist spray head 5 is adjusted; when the wind direction needs to be adjusted, the wind direction adjusting rod 8 is moved along the axial direction to drive the annular wind direction adjusting block 23 to move left and right, all wind direction adjusting connecting rods 21 connected to the annular wind direction adjusting block 23 are driven to move, the wind outlet nozzles 6 are driven to rotate, the wind direction is adjusted, the maximum strongest fog curtain is formed together, and the dust settling effect is improved.
Claims (6)
1. A vortex fog curtain device for a heading machine is characterized by comprising a vortex fog curtain device main body module, a water mist generating unit, a vortex generating unit, a water mist angle adjusting module and a vortex wind direction adjusting module, wherein the water mist angle adjusting module and the vortex wind direction adjusting module are arranged on the vortex fog curtain main body module along the circumferential direction, a plurality of water mist generating units are installed on the water mist angle adjusting module, and a plurality of vortex generating units are installed on the vortex wind direction adjusting module;
the vortex fog curtain device main body module comprises a vortex fog curtain main body, a panel, a water mist spray head window, an air outlet nozzle window and an air outlet nozzle fixing sleeve; the vortex fog curtain comprises a vortex fog curtain main body, wherein two rows of long holes I are uniformly formed in the outer circumferential surface of the rear end of the vortex fog curtain main body along the circumferential direction, a first connecting seat is uniformly formed in the outer circumferential surface of the front end along the circumferential direction, an air outlet nozzle window is uniformly formed in the front end circular table surface along the circumferential direction, two connecting seats II are symmetrically formed in two sides of the air outlet nozzle window, a water fog generating unit is installed on the outer circumferential surface of the vortex fog curtain main body through a sleeved annular water fog adjusting block, a vortex generating unit is installed on the outer circumferential surface of the vortex fog curtain main body through a sleeved annular water fog adjusting block and a sleeved annular air direction adjusting block, the vortex generating unit is arranged corresponding to the long hole I of the middle rear end, an air outlet nozzle on the vortex generating unit is connected with the air outlet nozzle fixing sleeve and the bolt on the vortex fog curtain main body, a vortex fog curtain shell is sleeved outside the vortex fog curtain shell, and the rear end of the vortex curtain shell is connected with a connecting pipe, and an air pipe and a water pipe are arranged in the connecting pipe, a water mist spray head window is uniformly arranged at the front end panel of the vortex fog curtain shell along the circumferential direction, a water mist spray head is arranged in the water mist spray head window, and a second long hole through which an air supply direction adjusting rod and a water mist angle adjusting rod penetrate is formed in the vortex fog curtain shell.
2. A vortex fog screen device for a heading machine according to claim 1, wherein: the water mist generating unit comprises a water mist spray head, a water mist spray head connector, a water pipe and a high-pressure water pump; the water spray nozzle is connected with one end of a water pipe through a water spray nozzle connector, the other end of the water pipe is connected with a high-pressure water pump, and the high-pressure water pump is communicated with a water supply source.
3. A vortex fog screen device for a heading machine according to claim 1, wherein: the water mist angle adjusting module comprises an annular water mist adjusting block, a water mist nozzle angle adjusting block II is uniformly arranged on the outer circle of the annular water mist adjusting block along the circumferential direction, the water mist nozzle angle adjusting block II is connected with one end of a water mist angle adjusting connecting rod through a bolt, the other end of the water mist adjusting rod is connected with the water mist nozzle angle adjusting block I through a bolt, the water mist nozzle angle adjusting block is sleeved at the rear end of the water mist nozzle, a water mist nozzle fixing block is arranged in the middle of the water mist nozzle, a water mist angle adjusting rod is arranged on the end face of the annular water mist adjusting block, the water mist nozzle angle adjusting block I, the water mist angle adjusting connecting rod and the water mist nozzle angle adjusting block II form a crank block structure, the water mist angle adjusting rod moves along the axial direction to drive the annular water mist adjusting block to move, and further drive all the water mist angle adjusting connecting rods connected to the annular water mist adjusting block to move, thereby driving the water mist spray head to rotate.
4. A vortex fog screen device for a heading machine according to claim 1, wherein: the vortex generating unit comprises an air outlet nozzle, an air inlet pipeline of the air outlet nozzle and an air inlet connector of the air outlet nozzle; air outlet nozzle air inlet pipeline one end is connected with the air outlet nozzle, and the other end is connected with air outlet nozzle air inlet connector one end, and the air outlet nozzle air inlet connector other end is connected with the tuber pipe, and the tuber pipe is connected with high pressure positive blower.
5. A vortex fog screen device for a heading machine according to claim 1, wherein: vortex wind direction adjusting module includes cyclic annular wind direction regulating block, the disc evenly is provided with wind direction regulating block two along circumference in the cyclic annular wind direction regulating block, and wind direction regulating block two passes through the bolt and is connected with wind direction adjusting connecting rod one end, and the wind direction adjusting connecting rod other end passes through bolt and wind direction regulating block one and is connected with the air-out nozzle, is provided with the wind direction on the cyclic annular wind direction regulating block excircle and adjusts the pole, air-out nozzle, wind direction regulating block one, wind direction adjusting connecting rod, wind direction regulating block two constitute a slider-crank structure, the wind direction is adjusted and is moved about the pole, and the control is moved about driving cyclic annular wind direction regulating block, drives all wind direction adjusting connecting rod movements of connecting on cyclic annular wind direction regulating block, drives the air-out nozzle and rotates.
6. The use method of the vortex fog screen device for the heading machine as claimed in claim 1, characterized by comprising the following steps:
starting a high-pressure fan and a high-pressure water pump, conveying the generated high-pressure gas to each air outlet nozzle through an air inlet pipeline of the air outlet nozzle to form vortex, and conveying water to each water mist spray head through a water pipe to form water mist; when the direction angle of the water mist needs to be adjusted, the water mist adjusting rod is moved along the axial direction to drive the annular water mist adjusting block to move axially, all the water mist angle adjusting connecting rods connected to the annular water mist adjusting block are driven to move, and the water mist spray head is driven to rotate, so that the angle of the water mist spray head is adjusted; when the wind direction needs to be adjusted, the wind direction adjusting rod moves along the axial direction to drive the annular wind direction adjusting block to move left and right, all wind direction adjusting connecting rods connected to the annular wind direction adjusting block are driven to move, the wind outlet nozzle is driven to rotate, the wind direction is adjusted, the maximum and strongest fog curtain is formed together, and the dust settling effect is improved.
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| CN202010979278.3A CN111963169B (en) | 2020-09-17 | 2020-09-17 | Vortex fog curtain device for development machine and use method |
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| CN202010979278.3A CN111963169B (en) | 2020-09-17 | 2020-09-17 | Vortex fog curtain device for development machine and use method |
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| CN111963169B true CN111963169B (en) | 2022-04-01 |
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| CN111963169A (en) | 2020-11-20 |
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