CN112609139A - Centrifugal spraying equipment for hot-dip galvanized strip steel small spangle production and control system thereof - Google Patents
Centrifugal spraying equipment for hot-dip galvanized strip steel small spangle production and control system thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/26—After-treatment
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
- C23C2/36—Elongated material
- C23C2/40—Plates; Strips
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Abstract
The invention relates to a centrifugal spraying device for hot-dip galvanized strip steel small spangle production and a control system thereof, which are suitable for spangle quality control of a continuous hot-dip galvanizing production line. The device has the function of adjusting the solidification positions of different spangles, can monitor the production process data in real time through an intelligent process control system aiming at the plates with different thicknesses and different zinc layer weights, and automatically adjusts related parameters, thereby realizing the accurate positioning of the solidification positions of the spangles of different galvanized plates. The equipment has a centrifugal spraying function, the spraying granularity is adjusted by adjusting the rotating speed of the centrifugal spraying disc, the centrifugal spraying does not have air source impact, the disordered impact of the conventional spraying is solved, and meanwhile, the average granularity of the spraying generated by the spraying mode is smaller, so that the problems of moire, white spots and the like generated in the conventional spraying process are solved, and the equipment is the automatic operation of double control of the size and the quality of the hot galvanizing zinc flower.
Description
Technical Field
The invention belongs to the technical field of hot-dip galvanized strip steel small spangle production, and relates to centrifugal spraying equipment for hot-dip galvanized strip steel small spangle production and a control system thereof.
Background
Hot galvanizing is one of the most effective methods for preventing atmospheric corrosion of steel, and compared with other metal corrosion prevention methods, the method has the advantages of incomparable and unique technology in the aspects of electrochemical protection of a coating, coating compactness, coating durability, coating maintenance-free property, coating-matrix binding force, coating economy, adaptability of a hot galvanizing process to the shape and the size of a steel piece and high production efficiency. In long-term use, the cost of hot galvanizing is far lower than that of paint, and the hot galvanizing is widely applied to electric power, traffic, communication, infrastructure and the like. Therefore, since 2000 years, many large-scale steel mills in China have built a plurality of continuous hot galvanizing plants in large and medium-scale steel mills such as saddle steel, first steel, Handover steel and the like. However, taking the 2# hot-dip galvanizing line for continuous production of the Handrail with the annual output of 200 ten thousand tons as an example, the cold-rolled galvanized strip steel production is developing towards the directions of high performance, high quality and low cost along with the continuous improvement of the quality of cold-rolled products by the market. The product has various problems of zinc flow lines, spangle size, edge spangle uniformity control and the like, and scholars at home and abroad in the field of hot galvanizing spangle control carry out various researches.
Patent No. 201610686451.4 Zhang, et al, discloses that spangle control of hot galvanizing large spangle products with different strip steel thicknesses can be realized by reasonably adjusting technological parameters such as raw material surface roughness, strip steel zinc pot temperature, antimony content and aluminum content in zinc liquid, zinc liquid temperature, high span temperature, unit speed, etc., so that the produced large spangle products have beautiful appearance and clear spangle outline. The patent realizes spangle quality control by adjusting various process parameters of the production line, and the produced product is a large spangle product and cannot produce a small spangle product.
The Chen political and other people of patent No. 200910142858.0 Fujian Kai Jing Steel development Co., Ltd, introduced a hot dip galvanized surface spangle morphology control, the steel plate was polished after being sprayed by a small spangle machine, wherein the small spangle nozzle diameter was 1.5-3mm, the water pressure was 0.1-0.4MPa, the air pressure was 0.4-0.5MPa, the nozzle distance from the air knife was 400-600mm, and the cooling water temperature was 30-50 ℃. The patent can only realize the preparation of small spangles to a certain extent, but cannot fundamentally solve the problems of uneven droplet size, spray angle and convection through temperature control.
Disclosure of Invention
The invention aims to provide centrifugal spraying equipment for producing small spangles of hot-dip galvanized steel strips and a control system thereof, wherein the average particle size of spray generated in a centrifugal spraying mode is smaller, so that the problems of moire, white spots and the like generated in the conventional spraying process are solved.
The invention provides a centrifugal spraying device for producing small spangles of hot-dip galvanized steel strips, which is used for improving the spangles quality of a continuous hot-dip galvanizing production line and comprises the following components: the device comprises a mobile platform, a mounting frame body and a centrifugal spraying device; the mounting frame body is fixed on the moving platform and can horizontally move along with the moving platform, and the centrifugal spraying device is arranged on the mounting frame body and can vertically move on the mounting frame body;
the centrifugal spray device comprises: the device comprises an air extraction box, an air extraction box support, a fan, a left spray box, a right spray box, a spray box connecting frame, an interval adjusting structure, a gear transmission lifting structure, two sets of spray medium pipeline groups and a spray recovery structure;
the distance adjusting structure is fixed at the front end of the spray box connecting frame, the left spray box and the right spray box are fixed on the distance adjusting structure, the distance between the left spray box and the right spray box is adjustable, and centrifugal spray disc sets are arranged in the left spray box and the right spray box; each set of spraying medium pipeline group consists of a gas pipeline and a medium pipeline, the gas pipeline is connected with a gas source pump, the medium pipeline is connected with a medium source pump, and a flow regulating valve and a switch valve are arranged on the medium pipeline; the two sets of spraying medium pipeline groups respectively convey gas and an atomizing medium to the centrifugal spraying disc groups in the left spraying box and the right spraying box; spraying notches are formed in the opposite side walls of the left spraying box and the right spraying box; the air extraction box support is fixed to the top of the spray box connecting frame, the air extraction box is installed on the air extraction box support, and the air extraction box is connected with the fan and is connected with the left spray box and the right spray box through two air extraction pipes; the gear transmission lifting structure is fixed on the air extraction box support and comprises a first speed reduction motor and two symmetrically arranged driving gears, and the driving gears are driven by the first speed reduction motor to vertically lift on racks on the mounting frame body to realize vertical movement of the centrifugal spraying device; the spraying recovery structure comprises two spraying recovery base plates, and the spraying recovery base plates are respectively arranged at the bottoms of the left spraying box and the right spraying box.
In the centrifugal spraying equipment for producing the hot-dip galvanized steel strip small spangles, the centrifugal spraying plate group is composed of a plurality of centrifugal spraying plates connected through pipelines, each centrifugal spraying plate is controlled by one spraying motor, the spraying width is controlled by controlling the opening number of the centrifugal spraying plates, the rotating speed of the spraying motor is adjusted to control the spraying granularity, and the spraying flow is controlled by the adjusting valve group.
In the centrifugal spraying equipment for producing the hot-dip galvanized steel strip small spangles, the distance adjusting structure comprises: the second speed reducing motor, the left and right spiral trapezoidal screw rods and the two linear guide rails are arranged on the left and right spiral trapezoidal screw rods; the two linear guide rails are arranged at the front end of the spray box connecting frame in parallel, two ends of each linear guide rail are respectively provided with a sliding block, and the left spray box and the right spray box are respectively fixedly connected with the sliding blocks at two ends of the two linear guide rails; the left-handed and right-handed trapezoidal lead screw is arranged between the two linear guide rails, two nuts are arranged on the left-handed and right-handed trapezoidal lead screws, the two nuts are fixedly connected with the left spray box and the right spray box respectively, the second speed reducing motor is fixed in the middle of the spray box connecting frame, the left-handed trapezoidal lead screw and the right-handed trapezoidal lead screw are driven by the second speed reducing motor to rotate, and the two nuts move oppositely or oppositely on the left-handed and right-handed trapezoidal lead screws to adjust the distance between the left spray box and the right spray box.
In the centrifugal spraying equipment for producing the hot-dip galvanized steel strip small spangles, the gear transmission lifting structure comprises: the device comprises two driving gears, two supporting rollers, a motor transmission shaft, a driving device fixing frame and a first speed reducing motor;
the driving device fixing frame is arranged on the air extraction box support and comprises two fixing frames and two connecting rods, and the two fixing frames are fixedly connected through the two connecting rods; the utility model discloses a centrifugal spraying device, including installation support body, motor drive shaft, first gear motor, two driving gears, two support rollers, two rack, the rack is located driving gear and support roller, motor drive shaft both ends are rotated with corresponding fixed frame respectively and are connected, first gear motor locates a fixed frame's the outside and is connected with motor drive shaft's one end, two driving gears set up respectively in two fixed frame and fix the both ends at motor drive shaft, two support roller locate corresponding fixed frame respectively and set up with the driving gear relatively, two parallel arrangement's rack passes corresponding fixed frame on the installation support body, the rack is located between driving gear and the support roller and meshes with the driving gear, first gear motor drive shaft drives the rack of driving.
In the centrifugal spraying equipment for producing the hot-dip galvanized steel strip small spangles, the opposite side walls of two fixed frames are respectively provided with an anti-falling safety device, and a driven gear of the anti-falling safety device is meshed with a rack; the two fixed frames are provided with an air cylinder and a fixed seat, an air cylinder piston rod is connected with the middle of the connecting rod, the rear end of the connecting rod is rotatably connected with the fixed seat, and the front end of the connecting rod is pressed against the driving wheel under the pushing of the air cylinder piston rod, so that the driving gear and the driven gear are locked with the rack.
In the centrifugal spraying equipment for producing the hot-dip galvanized steel strip small spangles, two sides of a connecting frame of a spraying box are respectively provided with a holding structure, each holding structure comprises a holding support and 4 support wheels arranged oppositely in pairs, the holding supports are fixed on the connecting frame of the spraying box, and the 4 support wheels are arranged in the holding supports; the racks on the mounting frame body penetrate through the 4 supporting wheels which are arranged oppositely in pairs.
The invention provides a control system of a centrifugal spraying device for producing small spangles of hot-dip galvanized strip steel, which comprises the following components: the system comprises a main control PLC, an HMI human-computer interface, a main console remote I/O station, a first speed reduction motor frequency converter, a second speed reduction motor frequency converter, a spraying motor frequency converter, a fan frequency converter and an industrial Ethernet switch; the master control PLC and the HMI are connected to a control system of the continuous hot galvanizing production line through an industrial Ethernet switch, and the master control PLC is respectively connected with a remote I/O station of a master console, a flow regulating valve, a switch valve, a first speed reducing motor frequency converter, a second speed reducing motor frequency converter, a spraying motor frequency converter and a fan frequency converter; the first speed reducing motor frequency converter is connected with a first speed reducing motor, the second speed reducing motor frequency converter is connected with a second speed reducing motor, the spraying motor frequency converter is connected with a spraying motor, and the fan frequency converter is connected with a fan motor; and the master control PLC controls the control valve group, the first speed reducing motor frequency converter, the second speed reducing motor frequency converter, the spraying motor frequency converter and the fan frequency converter according to the production process data of the continuous hot galvanizing production line so as to control the spraying position, the spraying granularity, the spraying width and the spraying flow.
The centrifugal spraying equipment for producing the hot-dip galvanized steel strip with the small spangles is used for improving the spangles quality of a continuous hot-dip galvanizing production line, wherein a centrifugal spraying device has the characteristic of no air source of conventional spraying, the problem of moire caused by disordered spraying is reduced by reducing impact, meanwhile, the speed and the size of spraying droplets are in an inverse proportion relation, and the surface of the droplets is vaporized to reduce the size under a high-temperature environment, so that the centrifugal spraying can avoid the problem of white spots caused by part of large droplets in the conventional spraying. The invention can select and replace atomizing media according to the requirements of different spangle granularities and spangle component performances. The spray particle size is controlled by adjusting the spray air flow and the medium flow and controlling the rotating speed of a spray motor, so that the spray particles are 20-60 mu m.
Drawings
FIG. 1 is an overall schematic diagram of a centrifugal spraying device for producing small spangles of hot-dip galvanized steel strips;
FIG. 2 is a schematic structural view of a centrifugal spray device;
FIG. 3 is a top plan view, partially in section, of a centrifugal spray device;
FIG. 4 is a schematic view of a spacing adjustment structure;
FIG. 5 is a schematic view of a geared lift arrangement;
FIG. 6 is an internal schematic view of a fixed frame of the geared lift arrangement;
FIG. 7 is a schematic view of a clasping structure;
FIG. 8 is a schematic view of a spray box attachment bracket;
FIG. 9 is a schematic diagram of a control system of a centrifugal spraying device for producing small spangles of hot-dip galvanized steel strips;
in the figure: 1-an air extraction box, 2-an air extraction box bracket, 3-a left spray box, 4-a right spray box, 5-a spray box connecting frame, 6-a spacing adjustment structure, 7-a gear transmission lifting structure, 8-a spray medium pipeline group, 9-a spray recovery structure, 10-an air extraction pipe, 11-a holding structure, 12-a centrifugal spray plate group, 51-a spray recovery chassis mounting position, 52-a spray medium pipeline mounting position group, 53-a spacing adjustment structure mounting position, 54-a holding structure mounting position, 61-a second speed reducing motor, 62-a left and right spiral trapezoidal screw rod, 63-a linear slide rail, 64-a screw nut, 65-a slide block, 71-a first speed reducing motor, 72-a driving gear, 73-a supporting roller and 74-a motor transmission shaft, 75-a fixed frame, 76-a connecting rod, 77-an anti-falling safety device, 78-a driven gear, 79-an air cylinder, 80-a connecting rod, 81-a fixed seat, 111-a holding bracket, 112-a supporting wheel, 100-a centrifugal spraying device, 200-a mounting frame body and 300-a moving platform.
Detailed Description
The invention discloses centrifugal spraying equipment for producing small spangles of hot-dip galvanized steel strips, which mainly aims to solve the problems of the defects caused by spangles control equipment such as a hot-dip galvanized production line, spray cooling and the like and comprises the following steps:
1. the existing hot galvanizing production line does not have the spangle nucleation control function, so that the spangles are large in size and have use limitation in various fields;
2. the conventional spraying promotes the spangle nucleation rate, but uneven fog drops and large fog drop sizes can bring white spots of a zinc coating, and disordered spraying can bring the moire problem.
As shown in fig. 1, fig. 2 and fig. 8, the centrifugal spraying device for producing small spangles of hot-dip galvanized steel strips, which is provided by the invention, is used for improving the spangles quality of a continuous hot-dip galvanizing production line and comprises: a mobile platform 300, a mounting frame body 200 and a centrifugal spraying device 100. The mounting frame body 200 is fixed on the moving platform 300 and can horizontally move along with the moving platform 300, and the centrifugal spraying device 100 is arranged on the mounting frame body 200 and can vertically move on the mounting frame body 200.
The centrifugal spray device 100 includes: the device comprises an air extraction box 1, an air extraction box support 2, a fan, a left spray box 3, a right spray box 4, a spray box connecting frame 5, an interval adjusting structure 6, a gear transmission lifting structure 7, two sets of spray medium pipeline groups 8 and a spray recovery structure 9. The spray box connecting frame 5 is provided with a spray recovery chassis mounting position 51, a spray medium pipeline mounting position group 52, an interval adjusting structure mounting position 53 and a holding structure mounting position 54.
The distance adjusting structure 6 is fixed at the front end of the spray box connecting frame 5, the left spray box 3 and the right spray box 4 are fixed on the distance adjusting structure 6, and the distance between the left spray box and the right spray box is adjustable. Centrifugal spray disc sets 12 are arranged in the left spray box 3 and the right spray box 4. Each set of spraying medium pipeline group 8 consists of a gas pipeline and a medium pipeline, the gas pipeline is connected with a gas source pump, the medium pipeline is connected with a medium source pump, and a flow regulating valve and a switch valve are arranged on the medium pipeline. Two sets of spray medium piping 8 deliver gas and spray medium to the centrifugal spray disk packs 8 in the left and right spray boxes 3, 4, respectively. Spraying notches are formed in the opposite side walls of the left spraying box 3 and the right spraying box 4. The air extraction box support 2 is fixed to the top of the spray box connecting frame 5, the air extraction box 1 is installed on the air extraction box support 2, the air extraction box 1 is connected with the fan and connected with the left spray box 3 and the right spray box 4 through the two air extraction pipes 10, and water vapor and non-vaporized fog drops are sucked. The gear transmission lifting structure 7 is fixed on the extraction box support 2, the gear transmission lifting structure 7 comprises a first speed reduction motor 71 and two driving gears 72 which are symmetrically arranged, and the vertical movement of the centrifugal spraying device 100 is realized by the vertical lifting movement of the driving gears 72 on the racks on the installation frame body 200 driven by the first speed reduction motor 71. The spray recovery structure 9 comprises two spray recovery chassis which are respectively arranged at the bottoms of the left spray box 3 and the right spray box 4 and used for collecting atomized liquid drops after spraying.
As shown in fig. 3, the centrifugal spray disk pack 12 is composed of a plurality of centrifugal spray disks connected by a pipe, each of which is controlled by a spray motor.
The centrifugal spraying disc set 12 can be provided with 5-20 centrifugal spraying discs, the width of the centrifugal spraying discs is 500-2000 mm, and the spraying width can be controlled by controlling the opening number of the centrifugal spraying discs through a motor according to different spraying requirements. The spraying granularity can be controlled by adjusting the rotating speed of a spraying motor, and the spraying flow is controlled by an adjusting valve group. The atomizing medium can be selected and replaced according to the performance requirements of the spangle components, and the medium mainly comprises water and metal powder with the particle size of 20-50 mu m, such as zinc powder and the like.
As shown in fig. 4, the pitch adjustment structure 6 includes: a second speed reducing motor 61, a left-right spiral trapezoidal screw 62 and two linear guide rails 63. The two linear guide rails 63 are arranged at the front end of the spray box connecting frame 5 in parallel, the two ends of the linear guide rails 63 are respectively provided with a sliding block 65, and the left spray box 3 and the right spray box 4 are respectively fixedly connected with the sliding blocks 65 at the two ends of the two linear guide rails 63. In specific implementation, each end of the linear guide 63 is provided with 2 sliders 65. The left and right spiral trapezoidal screw rods 62 are arranged between the two linear guide rails 63, two nuts 64 are arranged on the left and right spiral trapezoidal screw rods 62, and the two nuts 64 are fixedly connected with the left spray box 3 and the right spray box 4 respectively. The second speed reducing motor 61 is fixed in the middle of the spray box connecting frame 5, the second speed reducing motor 61 drives the left and right spiral trapezoidal screw rods 62 to rotate, and the two nuts 64 move oppositely or oppositely on the left and right spiral trapezoidal screw rods 62 to further adjust the distance between the left spray box 3 and the right spray box 4. The adjusting range is 300-700 mm.
As shown in fig. 5, the gear transmission lifting structure 7 includes: a first speed reducing motor 71, two driving gears 72, two supporting rollers 73, a motor transmission shaft 74 and a driving device fixing frame;
the driving device fixing frame is installed on the extraction box support 2 and comprises two fixing frames 75 and two connecting rods 76, and the two fixing frames 75 are fixedly connected through the two connecting rods 76. The two ends of the motor transmission shaft 74 are rotatably connected with the corresponding fixed frames 75 respectively, the first speed reduction motor 71 is arranged on the outer side of one fixed frame 75 and connected with one end of the motor transmission shaft 74, the two driving gears 72 are arranged in the two fixed frames 75 respectively and fixed at the two ends of the motor transmission shaft 74, the two support rollers 73 are arranged in the corresponding fixed frames 75 respectively and are arranged opposite to the driving gears 72, two parallel racks on the installation frame body 200 penetrate through the corresponding fixed frames 75, the racks are positioned between the driving gears 72 and the support rollers 73 and are meshed with the driving gears 72, the first speed reduction motor 71 drives the motor transmission shaft 74 to drive the driving gears 72 to vertically lift on the racks on the installation frame body 200, and then the centrifugal spraying device 100 is driven to vertically move on the installation frame body 200. So that the position of the zinc liquid solidification line of different hot-galvanized plates can be tracked.
As shown in fig. 5 and 6, two opposite side walls of the fixed frames 75 are provided with a safety catch 77, respectively, and a driven gear 78 of the safety catch 77 is engaged with the rack. The two fixing frames 75 are provided with an air cylinder 79 and a fixing seat 81, an air cylinder piston rod is connected with the middle of the connecting rod 80, the rear end of the connecting rod 80 is rotatably connected with the fixing seat 81, and the front end of the connecting rod 80 is pressed against the driving gear 72 under the pushing of the air cylinder piston rod, so that the driving gear 72 and the driven gear 78 are locked with the racks.
As shown in fig. 7, two sides of the spray box connecting frame 5 are respectively provided with a clasping structure 11, the clasping structure comprises a clasping support 111 and 4 support wheels 112 arranged oppositely in pairs, the clasping support 111 is fixed on the spray box connecting frame 5, and the 4 support wheels 112 are arranged in the clasping support 11; the rack on the mounting frame 200 passes through the 4 support wheels 112 arranged opposite to each other.
The invention relates to centrifugal spraying equipment for producing hot-dip galvanized strip steel small spangles, which comprises the following specific working processes:
first, position adjustment
1. And (3) adjusting the position of the moving platform, as shown in fig. 1, driving a track motor of the moving platform, and adjusting the whole equipment to the position of the hot galvanizing plate.
2. Adjusting the position of the centrifugal spraying device: the lifting frequency converter of the centrifugal spraying device is manually or automatically controlled, the lifting structure 7 is driven by the driving gear to move up and down, the spraying forward blowing position is adjusted to the spangle solidification line area according to the hot galvanizing process condition parameters, and the position area can be displayed by the control system in real time.
3. And (3) adjusting the distance between the left spray box and the right spray box: look galvanizing coat thickness, thick parameter influence of board and rotate through the trapezoidal lead screw of a gear motor drive left and right hand, the interval of adjusting left spray case and right spray case is adjusted in the linear guide direction, and the control range is 300 ~ 700 mm.
Secondly, process adjustment
Adjusting a spraying pipeline: adjusting the spraying medium and the spraying flow by a spraying medium pipeline group according to the process parameters such as the thickness and the quality requirement of the zinc coating;
adjusting the spray particle size: and adjusting different centrifugal spraying disc sets to spray according to different plate widths, and adjusting the rotating speed of a spraying motor to control the spraying granularity.
Atomizing and recovering: set up fan, exhaust chamber and two exhaust tubes, suck the vapor and the not vaporized droplet in left spray box and the right spray box through the fan to collect after the heat exchanger condensation, avoid gathering a large amount of vapor and droplets around belted steel and the equipment, reduce the spraying to the influence of environment, reduce the corruption to peripheral equipment.
As shown in fig. 9, the invention also provides a control system of the centrifugal spraying equipment for producing the small spangles of the hot-dip galvanized steel strip, which is used for controlling the centrifugal spraying equipment for producing the small spangles of the hot-dip galvanized steel strip. The control system includes: the system comprises a main control PLC, an HMI human-computer interface, a main console remote I/O station, a first speed reduction motor frequency converter, a second speed reduction motor frequency converter, a spraying motor frequency converter, a fan frequency converter and an industrial Ethernet switch; the master control PLC and the HMI are connected to a control system of the continuous hot galvanizing production line through an industrial Ethernet switch, and the master control PLC is respectively connected with a remote I/O station of a master console, a flow regulating valve, a switch valve, a first speed reducing motor frequency converter, a second speed reducing motor frequency converter, a spraying motor frequency converter and a fan frequency converter; the first speed reducing motor frequency converter is connected with a first speed reducing motor, the second speed reducing motor frequency converter is connected with a second speed reducing motor, the spraying motor frequency converter is connected with a spraying motor, and the fan frequency converter is connected with a fan motor; and the master control PLC controls the control valve group, the first speed reducing motor frequency converter, the second speed reducing motor frequency converter, the spraying motor frequency converter and the fan frequency converter according to the production process data of the continuous hot galvanizing production line so as to control the spraying position, the spraying granularity, the spraying width and the spraying flow. Meanwhile, the data of the small spangle production spraying process can be displayed in real time through an HMI human-machine interface, and the control parameters for displaying the small spangle production spraying process are adjusted through a main console remote I/O station.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, which is defined by the appended claims.
Claims (7)
1. The utility model provides a hot-galvanize belted steel small spangle production centrifugal spraying apparatus, its characterized in that for continuous hot-galvanize production line spangle quality improves, includes: the device comprises a mobile platform, a mounting frame body and a centrifugal spraying device; the mounting frame body is fixed on the moving platform and can horizontally move along with the moving platform, and the centrifugal spraying device is arranged on the mounting frame body and can vertically move on the mounting frame body;
the centrifugal spray device comprises: the device comprises an air extraction box, an air extraction box support, a fan, a left spray box, a right spray box, a spray box connecting frame, an interval adjusting structure, a gear transmission lifting structure, two sets of spray medium pipeline groups and a spray recovery structure; the distance adjusting structure is fixed at the front end of the spray box connecting frame, the left spray box and the right spray box are fixed on the distance adjusting structure, the distance between the left spray box and the right spray box is adjustable, and centrifugal spray disc sets are arranged in the left spray box and the right spray box; each set of spraying medium pipeline group consists of a gas pipeline and a medium pipeline, the gas pipeline is connected with a gas source pump, the medium pipeline is connected with a medium source pump, and a flow regulating valve and a switch valve are arranged on the medium pipeline; the two sets of spraying medium pipeline groups respectively convey gas and an atomizing medium to the centrifugal spraying disc groups in the left spraying box and the right spraying box; spraying notches are formed in the opposite side walls of the left spraying box and the right spraying box; the air extraction box support is fixed to the top of the spray box connecting frame, the air extraction box is installed on the air extraction box support, and the air extraction box is connected with the fan and is connected with the left spray box and the right spray box through two air extraction pipes; the gear transmission lifting structure is fixed on the air extraction box support and comprises a first speed reduction motor and two symmetrically arranged driving gears, and the driving gears are driven by the first speed reduction motor to vertically lift on racks on the mounting frame body to realize vertical movement of the centrifugal spraying device; the spraying recovery structure comprises two spraying recovery base plates, and the spraying recovery base plates are respectively arranged at the bottoms of the left spraying box and the right spraying box.
2. The centrifugal spraying equipment for producing the hot-dip galvanized steel strip small spangles as claimed in claim 1, wherein the centrifugal spraying plate group is composed of a plurality of centrifugal spraying plates connected through pipelines, each centrifugal spraying plate is controlled by a spraying motor, the spraying width is controlled by controlling the opening number of the centrifugal spraying plates, the spraying granularity is controlled by adjusting the rotating speed of the spraying motor, and the spraying flow rate is controlled by an adjusting valve group.
3. The centrifugal spraying device for producing the small spangles of the hot-dip galvanized steel strip as claimed in claim 1, wherein the spacing adjusting structure comprises: the second speed reducing motor, the left and right spiral trapezoidal screw rods and the two linear guide rails are arranged on the left and right spiral trapezoidal screw rods; the two linear guide rails are arranged at the front end of the spray box connecting frame in parallel, two ends of each linear guide rail are respectively provided with a sliding block, and the left spray box and the right spray box are respectively fixedly connected with the sliding blocks at two ends of the two linear guide rails; the left-handed and right-handed trapezoidal lead screw is arranged between the two linear guide rails, two nuts are arranged on the left-handed and right-handed trapezoidal lead screws, the two nuts are fixedly connected with the left spray box and the right spray box respectively, the second speed reducing motor is fixed in the middle of the spray box connecting frame, the left-handed trapezoidal lead screw and the right-handed trapezoidal lead screw are driven by the second speed reducing motor to rotate, and the two nuts move oppositely or oppositely on the left-handed and right-handed trapezoidal lead screws to adjust the distance between the left spray box and the right spray box.
4. The centrifugal spraying device for producing the small spangles of the hot-dip galvanized steel strip according to claim 1, wherein the gear transmission lifting structure comprises: the device comprises two driving gears, two supporting rollers, a motor transmission shaft, a driving device fixing frame and a first speed reducing motor;
the driving device fixing frame is arranged on the air extraction box support and comprises two fixing frames and two connecting rods, and the two fixing frames are fixedly connected through the two connecting rods; the utility model discloses a centrifugal spraying device, including installation support body, motor drive shaft, first gear motor, two driving gears, two support rollers, two rack, the rack is located driving gear and support roller, motor drive shaft both ends are rotated with corresponding fixed frame respectively and are connected, first gear motor locates a fixed frame's the outside and is connected with motor drive shaft's one end, two driving gears set up respectively in two fixed frame and fix the both ends at motor drive shaft, two support roller locate corresponding fixed frame respectively and set up with the driving gear relatively, two parallel arrangement's rack passes corresponding fixed frame on the installation support body, the rack is located between driving gear and the support roller and meshes with the driving gear, first gear motor drive shaft drives the rack of driving.
5. The centrifugal spraying equipment for producing the small spangles of the hot-dip galvanized steel strip as claimed in claim 4, wherein the opposite side walls of the two fixed frames are respectively provided with an anti-falling safety device, and a driven gear of the anti-falling safety device is meshed with a rack; the two fixed frames are provided with an air cylinder and a fixed seat, an air cylinder piston rod is connected with the middle of the connecting rod, the rear end of the connecting rod is rotatably connected with the fixed seat, and the front end of the connecting rod is pressed against the driving wheel under the pushing of the air cylinder piston rod, so that the driving gear and the driven gear are locked with the rack.
6. The centrifugal spraying equipment for producing the hot-dip galvanized steel strip small spangles as claimed in claim 5, wherein two sides of the spray box connecting frame are respectively provided with a holding structure, the holding structure comprises a holding bracket and 4 support wheels arranged oppositely in pairs, the holding bracket is fixed on the spray box connecting frame, and the 4 support wheels are arranged in the holding bracket; the racks on the mounting frame body penetrate through the 4 supporting wheels which are arranged oppositely in pairs.
7. A hot-dip galvanizing belted steel small spangle production centrifugation spraying apparatus control system which characterized in that includes: the system comprises a main control PLC, an HMI human-computer interface, a main console remote I/O station, a first speed reduction motor frequency converter, a second speed reduction motor frequency converter, a spraying motor frequency converter, a fan frequency converter and an industrial Ethernet switch; the master control PLC and the HMI are connected to a control system of the continuous hot galvanizing production line through an industrial Ethernet switch, and the master control PLC is respectively connected with a remote I/O station of a master console, a flow regulating valve, a switch valve, a first speed reducing motor frequency converter, a second speed reducing motor frequency converter, a spraying motor frequency converter and a fan frequency converter; the first speed reducing motor frequency converter is connected with a first speed reducing motor, the second speed reducing motor frequency converter is connected with a second speed reducing motor, the spraying motor frequency converter is connected with a spraying motor, and the fan frequency converter is connected with a fan motor; and the master control PLC controls the control valve group, the first speed reducing motor frequency converter, the second speed reducing motor frequency converter, the spraying motor frequency converter and the fan frequency converter according to the production process data of the continuous hot galvanizing production line so as to control the spraying position, the spraying granularity, the spraying width and the spraying flow.
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Cited By (1)
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| CN113210147A (en) * | 2021-05-21 | 2021-08-06 | 重庆赛迪热工环保工程技术有限公司 | Nozzle structure and special sectional cooler for zinc-aluminum-magnesium with same |
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| CN112609139B (en) | 2021-09-24 |
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Application publication date: 20210406 Assignee: XINYU IRON & STEEL Co.,Ltd. Assignor: Northeastern University Contract record no.: X2021210000065 Denomination of invention: A centrifugal spraying equipment and its control system for hot galvanized strip production of small zinc flower Granted publication date: 20210924 License type: Common License Record date: 20211223 |