CN113122792A - Temperature compensation type slag discharge auxiliary air knife - Google Patents

Temperature compensation type slag discharge auxiliary air knife Download PDF

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Publication number
CN113122792A
CN113122792A CN202110443597.7A CN202110443597A CN113122792A CN 113122792 A CN113122792 A CN 113122792A CN 202110443597 A CN202110443597 A CN 202110443597A CN 113122792 A CN113122792 A CN 113122792A
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CN
China
Prior art keywords
air
auxiliary air
air outlet
air knife
auxiliary
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110443597.7A
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Chinese (zh)
Inventor
杜昕
高伟民
李积鹏
王海
韩久彦
谯德高
董世文
张国堂
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Gansu Jiu Steel Group Hongxing Iron and Steel Co Ltd
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Gansu Jiu Steel Group Hongxing Iron and Steel Co Ltd
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Application filed by Gansu Jiu Steel Group Hongxing Iron and Steel Co Ltd filed Critical Gansu Jiu Steel Group Hongxing Iron and Steel Co Ltd
Priority to CN202110443597.7A priority Critical patent/CN113122792A/en
Publication of CN113122792A publication Critical patent/CN113122792A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C2/00Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/14Removing excess of molten coatings; Controlling or regulating the coating thickness
    • C23C2/16Removing excess of molten coatings; Controlling or regulating the coating thickness using fluids under pressure, e.g. air knives
    • C23C2/18Removing excess of molten coatings from elongated material
    • C23C2/20Strips; Plates
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C2/00Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/04Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
    • C23C2/06Zinc or cadmium or alloys based thereon

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Coating With Molten Metal (AREA)

Abstract

The invention discloses a temperature compensation type slag discharge auxiliary air knife which comprises a support, wherein the support is arranged on the front side and the rear side of a steel belt in parallel, and the height of the support is adjustable; four auxiliary air knives are arranged on the support, wherein two auxiliary air knives are arranged on the front side of the steel strip, and the other two auxiliary air knives are arranged on the rear side of the steel strip. The auxiliary air knife comprises an air inlet pipe, a heating pipe and an air outlet pipe, the angle of the air outlet pipe is adjustable, and an air quantity adjusting assembly is further arranged at the outlet of the air outlet pipe; the auxiliary air knife is also provided with a temperature detection assembly, the temperature detection assembly comprises an air inlet temperature sensor, an air outlet temperature sensor and a controller, the air inlet temperature sensor and the air outlet temperature sensor are respectively in signal connection with the controller, and the controller is also in signal connection with the heating assembly and the air volume adjusting assembly.

Description

Temperature compensation type slag discharge auxiliary air knife
Technical Field
The invention belongs to the technical field of steel galvanizing production equipment, and particularly relates to a temperature compensation type slag-discharging auxiliary air knife.
Background
On a continuous hot galvanizing production line, due to the low production line speed and the low air knife pressure, zinc slag and zinc liquid with different degrees are remained and adhered on the strip steel within 0-100mm of the strip steel from the edge of the strip steel after the strip steel passes through the air knife, so that the coatings on the two sides of the strip steel are thicker. The zinc dross and zinc particles are concentrated at the edge of the strip, which has many adverse effects on the subsequent production (as shown in fig. 1).
1. The damage to the water quenching tank drying roll, the finisher drying roll, the withdrawal and straightening machine drying roll, the roller coater coating roll, the rubber roll at the outlet section and the like is large, the zinc slag at the edge of the strip steel and the zinc fluctuate and abrade the contacted roll edge, the abrasion speed is accelerated, and the service life is shortened. In severe cases planned production is not completed in a production roll campaign and roll changes are forced to be stopped, resulting in a large amount of scrap and unplanned downgrades being produced from the stoppage.
2. The influence on the working rolls of a finishing machine and a withdrawal and straightening machine is large, the zinc slag and zinc at the edge of strip steel fall down or damage the roll due to large-particle zinc slag after plastic deformation is generated along with the rolling force of the working roll of the finishing machine, roll marks are copied on the supporting roll due to the damage of the working roll in serious conditions, and the time for replacing the supporting roll is prolonged.
The zinc dross which easily falls into the frame of the tension leveler can cause abrasion among a middle roller, a supporting roller and a working roller of the tension leveler, the service life of the working roller of the finisher and the roller of the tension leveler is reduced, and the production is passive.
3. The zinc slag splashing at the edge of the strip steel can also cause the blockage of the main air knife, generate air knife streak defects and generate degraded products.
4. The zinc slag and zinc fluctuation at the edge of the strip steel can also cause damage to the roller surface of the steel roller after plating, or the roller surface with the wrapping cloth on the roller surface is scratched and can not be used.
5. The zinc slag and zinc fluctuation at the edge of the strip steel influence the abrasion of the cutting edge of the scissors or damage the cutting edge by mouth breakage.
6. The zinc slag and zinc fluctuation at the edge of the strip steel can influence the edge of the product steel coil to bulge, form tower shape or overflow edge and other defects.
7. The zinc slag and zinc fluctuation at the edge of the strip steel can finally influence the product quality, the zinc slag and zinc fluctuation are often influenced by the edge of the strip steel when a customer uses the strip steel, the zinc slag and zinc fluctuation can not be normally carried out according to the production process, the edge of the strip steel needs to be trimmed and then used, the utilization rate is greatly reduced, and materials are wasted; if the product is a stamping raw material, the product is affected by the irregularity of the edge of the strip steel, the stamping is cracked, the die is seriously worn, and more adverse effects are brought.
Disclosure of Invention
The invention provides a temperature compensation type deslagging auxiliary air knife and aims to solve the technical problem.
Therefore, the invention adopts the following technical scheme:
a temperature compensation type slag discharge auxiliary air knife comprises a support, wherein the support is arranged on the front side and the rear side of a steel belt in parallel, and the height of the support is adjustable; the support is provided with four air knives, wherein two air knives are arranged on the front side of the steel strip, the other two air knives are arranged on the rear side of the steel strip, air outlets of the air knives face the edge of the steel strip, the four air knives are symmetrically arranged, the two air knives positioned on the same side of the steel strip are connected with a distance adjusting device, and the distance adjusting device is used for adjusting the distance between the two air knives;
the air knife comprises an air inlet pipe, a heating pipe and an air outlet pipe, a heating component is arranged in the heating pipe, the angle of the air outlet pipe is adjustable, an air volume adjusting component is further arranged at the outlet of the air outlet pipe, and the air volume adjusting component is used for adjusting the air volume at the outlet of the air outlet pipe;
the air knife is characterized in that a temperature detection assembly is further arranged on the air knife, the temperature detection assembly comprises an air inlet temperature sensor, an air outlet temperature sensor and a controller, the air inlet temperature sensor and the air outlet temperature sensor are respectively in signal connection with the controller, and the controller is further in signal connection with the heating assembly and the air volume adjusting assembly.
Furthermore, the air outlet pipe of the air knife comprises an air outlet hose and an air outlet nozzle, the upper end of the air outlet hose is fixedly connected with the lower end of the heating pipe, and the air outlet hose is fixedly connected with the air outlet nozzle;
the side surface of the air knife is connected with a vertical fixing plate, and the fixing plate is fixedly connected with the bracket; be equipped with the rotor plate of L shape between hose and the fixed plate of giving vent to anger, the middle part and the fixed plate of rotor plate are articulated, and the one end of rotor plate is connected with the regulation pole with hose fixed connection, the other end of rotor plate of giving vent to anger, and when adjusting the pole and removing, the rotor plate rotates and then drives the hose rotation of giving vent to anger around the pin joint.
Furthermore, the adjusting rod is connected with a first air cylinder, the first air cylinder is fixedly connected with the fixing plate, a piston rod of the first air cylinder is rotatably connected with the upper end of the adjusting rod, and the controller is in signal connection with the first air cylinder.
Furthermore, the air volume adjusting assembly comprises a wind shield, the wind shield is arranged in the air outlet nozzle, the upper end of the wind shield is connected with the top of the air outlet nozzle through a rotating shaft, and the rotating shaft is also connected with a pressure spring; when the deep bead was located initial position, the air outlet nozzle was opened completely, rotated deep bead air outlet nozzle and diminishes gradually, was equipped with the regulating part that is used for rotating the deep bead on the deep bead.
Furthermore, the adjusting piece comprises a screw rod, the screw rod is vertically arranged in the air outlet nozzle, the upper end and the lower end of the screw rod are rotatably connected with the air outlet nozzle, one end of the screw rod extends out of the air outlet nozzle, a sliding block is connected onto the screw rod, and the sliding block of the screw rod is rotated to move up and down along the screw rod; the sliding block is close to the wind shield, and the sliding block drives the wind shield to rotate when moving up and down.
Further, the distance adjusting device comprises a guide rail and two moving motors, the guide rail is horizontally arranged between the two air knives on the same side of the steel strip, the guide rail is fixed on the support, the fixed plate is in transmission connection with the guide rail, the moving motors are connected between the fixed plate and the guide rail, and when the moving motors rotate, the air knives move along the guide rail.
Furthermore, a power adjusting part is further arranged on the temperature detection assembly and is in signal connection with the controller.
Further, the heating assembly comprises a plurality of groups of heating wires arranged in parallel.
Furthermore, the controller is also connected with a storage, a display and a communication interface.
The invention has the beneficial effects that: according to the production line speed, the thickness of the strip steel, the width, the steel grade, the thickness of a coating, the height of a main air knife, the air knife distance, the air knife pressure, the temperature of a zinc pot, the tracking of a welding seam, the size of spangles (except for zero spangles) and other variables, which are taken by combining the variables, the pressure, the temperature, the angle and the distance from a spray head to the strip steel are adjusted, the judgment of multiple conditions including the distance from the edge of the strip steel is set, a database is established according to the actual requirements on site and the change of the plate surface quality, a secondary system of the production line is connected, and the reduction of zinc dross and zinc fluctuation defects at the.
Drawings
FIG. 1 is a schematic view showing the state of molten zinc and zinc dross when a strip steel passes through a zinc pot and a main air knife;
FIG. 2 is a front view of the arrangement of the auxiliary air knife of the present invention on a strip steel;
FIG. 3 is a side view of an arrangement of an auxiliary air knife of the present invention on a strip steel;
FIG. 4 is a front view of a construction of an auxiliary air knife of the present invention;
FIG. 5 is a side view of a structure of an auxiliary air knife of the present invention;
FIG. 6 is a sectional view of the exit tube of an auxiliary air knife in accordance with the present invention;
FIG. 7 is a schematic structural view of the distance adjusting device of the present invention;
FIG. 8 is a schematic diagram of the temperature sensing assembly of the present invention;
in the figure: 1-auxiliary air knife; 101-air inlet pipe, 102-heating pipe, 1021-first heating wire, 1022-second heating wire, 1023-third heating wire, 1024-fourth heating wire, 103-air outlet pipe, 1031-air outlet hose, 1032-air outlet nozzle, 104-fixing plate, 1051-rotating sheet, 1052-adjusting rod, 1053-first air cylinder, 106-air volume adjusting component, 1061-screw rod, 1062-screw rod, 1063-sliding block, 1064-wind shield, 1071-guide rail and 1072-moving motor;
2-galvanizing bath, 3-zinc liquid, 4-main air knife and 5-strip steel;
6-temperature detection component, 601-controller, 602-inlet air temperature sensor, 603-outlet air temperature sensor, 604-display, 605-storage, 606-communication interface, 607-data recorder, 608-power regulating component.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
a temperature compensation type slag-discharging auxiliary air knife comprises a support, wherein the support is arranged on the front side and the rear side of a steel belt in parallel, the height of the support is adjustable, and the support can adopt a telescopic rod structure. Or a workbench is arranged on the bracket, an adjusting device is arranged between the workbench and the bracket, and the adjusting device drives the workbench to lift up and down. Four auxiliary air knives 1 are arranged on the support, wherein two auxiliary air knives 1 are arranged on the front side of the steel strip, the other two auxiliary air knives 1 are arranged on the rear side of the steel strip, the air outlets of the auxiliary air knives 1 face the edge of the steel strip, the four auxiliary air knives 1 are symmetrically arranged, two auxiliary air knives 1 which are positioned on the same side of the steel strip are connected with a distance adjusting device, and the distance adjusting device is used for adjusting the distance between the two auxiliary air knives 1 (as shown in figures 1 and 2).
The side of the auxiliary air knife 1 is connected with a vertical fixing plate 104, and the fixing plate 104 is fixedly connected with the bracket. The distance adjusting device comprises a guide rail 1071 and two moving motors 1072, wherein the guide rail 1071 is horizontally arranged between two auxiliary air knives 1 on the same side of the steel strip, the guide rail 1071 is fixed on the bracket, the fixed plate 104 is in transmission connection with the guide rail 1071, the moving motors 1072 are connected between the fixed plate 104 and the guide rail 1071, and when the moving motors 1072 rotate, the auxiliary air knives 1 move along the guide rail 1071 (as shown in fig. 7).
The auxiliary air knife 1 comprises an air inlet pipe 101, a heating pipe 102 and an air outlet pipe 103, wherein the air inlet pipe 101 is provided with an adjusting valve for adjusting the air inlet amount; a heating assembly is arranged in the heating pipe 102, and the heating assembly comprises four groups of heating wires which are connected in series and are respectively: a first heating wire 1021, a second heating wire 1022, a third heating wire 1023, and a fourth heating wire 1024. The angle of the air outlet pipe 103 is adjustable, an air volume adjusting component 106 is further arranged at the outlet of the air outlet pipe 103, and the air volume adjusting component 106 is used for adjusting the air volume at the outlet of the air outlet pipe 103.
The air outlet pipe 103 of the auxiliary air knife 1 comprises an air outlet hose 1031 and an air outlet nozzle 1032, the upper end of the air outlet hose 1031 is fixedly connected with the lower end of the heating pipe 102, and the air outlet hose 1031 is fixedly connected with the air outlet nozzle 1032; an L-shaped rotating sheet 1051 is arranged between the gas outlet hose 1031 and the fixing plate 104, the middle part of the rotating sheet 1051 is hinged with the fixing plate 104, one end of the rotating sheet 1051 is fixedly connected with the gas outlet hose 1031, and the other end of the rotating sheet 1051 is connected with an adjusting rod 1052, and when the adjusting rod 1052 moves, the rotating sheet 1051 rotates around a hinged point to further drive the gas outlet hose 1031 to rotate. The adjusting rod 1052 is connected with a first cylinder 1053, the first cylinder 1053 is fixedly connected with the fixing plate 104, and a piston rod of the first cylinder 1053 is rotatably connected with the upper end of the adjusting rod 1052.
The air volume adjusting assembly 106 comprises a wind shield 1064, the wind shield 1064 is arranged in the air outlet nozzle 1032, the upper end of the wind shield 1064 is connected with the top of the air outlet nozzle 1032 through a rotating shaft, and the rotating shaft is also connected with a pressure spring; when wind deflector 1064 is located at the initial position, air outlet nozzle 1032 is fully opened, air outlet nozzle 1032 gradually becomes smaller when wind deflector 1064 is rotated, and an adjusting piece for rotating wind deflector 1064 is arranged on wind deflector 1064. The adjusting piece comprises a screw 1061, the screw 1061 is vertically arranged in the air outlet nozzle 1032, the upper end and the lower end of the screw 1061 are rotatably connected with the air outlet nozzle 1032, one end of the screw 1061 extends out of the air outlet nozzle 1032 and is connected with a screw 1062, the screw 1061 is connected with a slider 1063, and the screw 1061 is rotated to enable the slider 1063 to move up and down along the screw 1061; the slide 1063 abuts against the wind deflector 1064, and the slide 1063 moves up and down to drive the wind deflector 1064 to rotate. In order to facilitate the movement of the slider 1063, a guide rod parallel to the screw 1061 is further arranged in the air outlet nozzle 1032, and the guide rod is slidably connected with the slider 1063.
As shown in fig. 8, the auxiliary air knife 1 is further provided with a temperature detection assembly 6, the temperature detection assembly 6 includes an inlet temperature sensor 602, an outlet temperature sensor 603, and a controller 601, the inlet temperature sensor 602 and the outlet temperature sensor 603 are respectively in signal connection with the controller 601, and the controller 601 is further in signal connection with the heating assembly and the air volume adjusting assembly 106. The temperature detecting component 6 is further provided with a power adjusting component 608, the power adjusting component 608 is in signal connection with the controller 601, and the controller 601 is further connected with a storage 605, a display 604 and a communication interface 606. The controller 601 adjusts the energization power of the heating wire through the power adjusting part 608 according to the values of the inlet air temperature sensor 602 and the outlet air temperature sensor 603, thereby adjusting the temperature of the hot wind.
The controller 601 is a primary peripheral device of the device, can independently process signals under the condition of secondary system faults, provides an independent power supply, displays numerical values obtained by the two groups of temperature sensors on the display 604, provides measured data of the two groups of temperature sensors to the controller 601 for comparison and analysis, and calculates and compares temperature difference according to the temperature difference. The data logger 607 may store and record the measured real-time temperature data and monitoring events, analyze and process historical data, record the degradation trend of the temperature sensor, and provide data for production monitoring.
The structural design adopts a structural mode of local side blowing and a zinc removal mode of hot air compensation heating, and the zinc removal mode is designed on two sides below the main air knife 4, and the transition is adjusted within 5-300mm of the edge of the strip steel 5.
After air enters the heating pipe 102 for heating, hot air is obtained and is blown to the edge of the strip steel 5 through the air outlet hose 1031 connected with the air outlet nozzle 1032, and the surplus zinc liquid and zinc slag within the range of 10-300mm on the edge of the strip steel 5 are mainly controlled. The zinc liquid for producing GI zero-spangle products has better liquidity, the zinc slag on two sides of the strip steel 5 is less gathered, and the device is easy to eliminate and is used for producing aluminum-zinc-silicon or zinc-aluminum-magnesium plated products. The temperature compensation type slag-discharging auxiliary air knife 1 has great advantages, the aluminum-zinc-silicon and zinc-aluminum-magnesium plated steel mainly have high aluminum content in zinc liquid, the mobility of the zinc liquid is poor, and the difficulty of continuous hot galvanizing process production is also caused, the edge thickness defect caused by zinc slag within 100mm of the edge of strip steel 5 and edge over galvanizing is difficult to completely eliminate, and the invention mainly adopts a new structural mode of the temperature compensation type auxiliary air knife 1 aiming at the defect.
By adopting the temperature compensation type deslagging auxiliary air knife 1 with the working mode of the heating pipe 102, in order to reduce the sensitivity of the air knife of the invention to large spangles and products with spangles of aluminum-zinc-silicon, hot air is used as an air source of the auxiliary air knife 1 to prevent the excessive temperature of the edge of the strip steel 5 from being too high after the spraying in order to spray zinc slag and redundant zinc liquid, so that the control of the main air knife 4 on a coating layer is influenced, the scraping efficiency of the main air knife 4 at the edge of the strip steel 5 can be caused by the great reduction of the temperature of the edge of the strip steel 5, and the zinc liquid at the edge of the strip steel 5 is solidified too early, so that the edge thickness. The formation of spangles can be influenced, the low temperature of the edge of the strip steel 5 can cause the reduction of the condensation line of the edge, which is lower than the condensation line of the middle part of the strip steel 5, and the spangles in the middle part and the edge of the strip steel 5 are different in size after the strip steel 5 is cooled, so that the defect of uneven spangles is formed.
The temperature compensation type slag discharge auxiliary air knife 1 is used for reducing zinc slag on the edge of the strip steel 5 and excessive edge over-galvanizing, and a thicker coating can be produced by using lower air knife pressure.
The temperature compensation type deslagging auxiliary air knife 1 is used for reducing the production pressure of the original coating control main air knife 4, so that the coating is more uniform and convenient to control.
After the temperature compensation type deslagging auxiliary air knife 1 is used, the edge air knife opening degree of the original coating control main air knife 4 is adjusted to obtain a more uniform transverse coating, and the overall product quality is improved.
After the temperature compensation type slag discharge auxiliary air knife 1 is used, a good foundation is provided for cooling the strip steel 5 after transverse plating, the integral cooling uniformity is improved, and the uniformity of transverse spangles is effectively improved.
After the temperature compensation type slag-discharging auxiliary air knife 1 is used, a good foundation is provided for cooling the strip steel 5 after transverse plating, the integral cooling uniformity is improved, the strip steel 5 after thin-specification products are produced is improved to a certain extent, the control of a finishing machine and a withdrawal and straightening machine on the elongation of the plate surface is facilitated, and the effect of eliminating a yield platform is better.
The thickness defect of the rear side of the temperature compensation type slag-discharging auxiliary air knife 1 and the zinc slag on the edge of the strip steel 5 are greatly reduced, the coating effect of a water quenching tank, a finishing machine, a withdrawal and straightening machine and other drying rollers after plating and a rubber compression roller and a roller coater after plating are correspondingly improved, the service life of the rollers is greatly prolonged, the reduction of the roughness of the plated roller surface after the zinc slag and the edge are over-plated is reduced, the production smoothness of a unit and the maintenance cost of the unit are improved, the maintenance frequency and the replacement period of the rollers are reduced, and a large amount of production time is saved. The labor intensity of workers is reduced.
The angle, the pressure, the air volume, the hot air temperature, the height of the air knife distance and the like of the temperature compensation type deslagging auxiliary air knife 1 have great relations with the influence variables of the production line, a closed-loop control mode can be established, database management can be established, the working mode and the working parameter setting of the temperature compensation type deslagging auxiliary air knife 1 can be remotely controlled, effective centralized control management and quick response can be realized, and the continuous hot galvanizing high-speed production line can be served.
It should be noted that the above are only some embodiments of the present invention, and it should be noted that, for those skilled in the art, many modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims (9)

1. A temperature compensation type slag discharge auxiliary air knife is characterized by comprising supports, wherein the supports are arranged on the front side and the rear side of a steel strip in parallel, and the heights of the supports are adjustable; the support is provided with four auxiliary air knives, wherein two auxiliary air knives are arranged on the front side of the steel strip, the other two auxiliary air knives are arranged on the rear side of the steel strip, the air outlets of the auxiliary air knives face the edge of the steel strip, the four auxiliary air knives are symmetrically arranged, the two auxiliary air knives on the same side of the steel strip are connected with a distance adjusting device, and the distance adjusting device is used for adjusting the distance between the two auxiliary air knives;
the auxiliary air knife comprises an air inlet pipe, a heating pipe and an air outlet pipe, a heating component is arranged in the heating pipe, the angle of the air outlet pipe is adjustable, an air volume adjusting component is further arranged at the outlet of the air outlet pipe, and the air volume adjusting component is used for adjusting the air volume at the outlet of the air outlet pipe;
the auxiliary air knife is characterized in that a temperature detection assembly is further arranged on the auxiliary air knife and comprises an air inlet temperature sensor, an air outlet temperature sensor and a controller, the air inlet temperature sensor and the air outlet temperature sensor are respectively in signal connection with the controller, and the controller is further in signal connection with the heating assembly and the air volume adjusting assembly.
2. The temperature compensation type deslagging auxiliary air knife according to claim 1, wherein an air outlet pipe of the auxiliary air knife comprises an air outlet hose and an air outlet nozzle, the upper end of the air outlet hose is fixedly connected with the lower end of a heating pipe, and the air outlet hose is fixedly connected with the air outlet nozzle;
the side surface of the auxiliary air knife is connected with a vertical fixing plate, and the fixing plate is fixedly connected with the bracket; be equipped with the rotor plate of L shape between hose and the fixed plate of giving vent to anger, the middle part and the fixed plate of rotor plate are articulated, and the one end of rotor plate is connected with the regulation pole with hose fixed connection, the other end of rotor plate of giving vent to anger, and when adjusting the pole and removing, the rotor plate rotates and then drives the hose rotation of giving vent to anger around the pin joint.
3. The temperature compensation type deslagging auxiliary air knife of claim 2, wherein a first air cylinder is connected to the adjusting rod and is fixedly connected with the fixing plate, a piston rod of the first air cylinder is rotatably connected with the upper end of the adjusting rod, and the controller is in signal connection with the first air cylinder.
4. The temperature compensation type deslagging auxiliary air knife according to claim 1, wherein the air volume adjusting assembly comprises a wind shield, the wind shield is arranged in the air outlet nozzle, the upper end of the wind shield is connected with the top of the air outlet nozzle through a rotating shaft, and the rotating shaft is further connected with a pressure spring; when the deep bead was located initial position, the air outlet nozzle was opened completely, rotated deep bead air outlet nozzle and diminishes gradually, was equipped with the regulating part that is used for rotating the deep bead on the deep bead.
5. The temperature compensation type deslagging auxiliary air knife according to claim 4, wherein the adjusting piece comprises a screw rod, the screw rod is vertically arranged in the air outlet nozzle, the upper end and the lower end of the screw rod are rotatably connected with the air outlet nozzle, one end of the screw rod extends out of the air outlet nozzle, a sliding block is connected onto the screw rod, and the sliding block of the screw rod is rotated to move up and down along the screw rod; the sliding block is close to the wind shield, and the sliding block drives the wind shield to rotate when moving up and down.
6. The temperature compensation type slagging auxiliary air knife according to claim 1, wherein the distance adjusting device comprises a guide rail and two moving motors, the guide rail is horizontally arranged between the two auxiliary air knives on the same side of the steel strip, the guide rail is fixed on the bracket, the fixed plate is in transmission connection with the guide rail, the moving motors are connected between the fixed plate and the guide rail, and when the moving motors rotate, the auxiliary air knives move along the guide rail.
7. The temperature-compensated slagging auxiliary air knife according to claim 1, wherein the temperature detection assembly is further provided with a power adjusting member, and the power adjusting member is in signal connection with the controller.
8. The temperature-compensated slagging assisted air knife according to claim 7, wherein the heating assembly comprises a plurality of sets of heating wires arranged in parallel.
9. The temperature-compensated slagging auxiliary air knife according to claim 7, wherein a memory, a display and a communication interface are further connected to the controller.
CN202110443597.7A 2021-04-23 2021-04-23 Temperature compensation type slag discharge auxiliary air knife Pending CN113122792A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110443597.7A CN113122792A (en) 2021-04-23 2021-04-23 Temperature compensation type slag discharge auxiliary air knife

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110443597.7A CN113122792A (en) 2021-04-23 2021-04-23 Temperature compensation type slag discharge auxiliary air knife

Publications (1)

Publication Number Publication Date
CN113122792A true CN113122792A (en) 2021-07-16

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Application Number Title Priority Date Filing Date
CN202110443597.7A Pending CN113122792A (en) 2021-04-23 2021-04-23 Temperature compensation type slag discharge auxiliary air knife

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116103596A (en) * 2023-04-04 2023-05-12 天津市宇润德金属制品有限公司 Production process for coating steel coil

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116103596A (en) * 2023-04-04 2023-05-12 天津市宇润德金属制品有限公司 Production process for coating steel coil
CN116103596B (en) * 2023-04-04 2023-07-07 天津市宇润德金属制品有限公司 Production process for coating steel coil

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