Automatic zinc layer uniform plating equipment for galvanized strip steel and plating system thereof

Abstract

The invention relates to the technical field of strip steel plating, in particular to galvanized strip steel automatic zinc layer uniform plating equipment and a plating system thereof.The galvanized strip steel automatic zinc layer uniform plating equipment comprises a galvanizing bath, and further comprises a top cover fixedly connected between the inner walls of the galvanizing bath; the two storage shells are symmetrically and fixedly connected to the bottom of the supporting plate, and a plurality of air outlet holes are formed in the bottom of each storage shell at equal intervals; the gas supply system is arranged on one side of the galvanizing pool and conveys inert gas into the two storage shells through a U-shaped pipe; the centralized drainage mechanism is arranged in the two storage shells and used for draining inert gas in the two storage shells into the feeding frame and the discharging frame and spraying the inert gas to the surface of the strip steel; and when the sensor monitors that the oxygen concentration in the galvanizing bath is reduced below a set value, the controller is used for controlling the centralized drainage mechanism to drain and spray the inert gas conveyed by the gas supply system to the surface of the strip steel.

Description

Technical Field

[0001] The invention relates to the field of strip steel plating, and in particular to an automated zinc layer uniform plating device for galvanized strip steel and a plating system thereof. Background Art

[0002] Galvanized steel strip refers to a long steel plate with a layer of raw material called zinc on its surface. Hot-dip galvanizing has the advantages of uniform coating, strong adhesion and long service life.

[0003] When the strip is plated with zinc liquid, the strip is usually passed through the zinc liquid in the galvanizing pool to complete the galvanizing treatment. However, during the hot-dip galvanizing process, the zinc liquid will produce a zinc film attached to the surface of the zinc liquid due to an oxidation reaction. When the strip is transported through the zinc liquid, the zinc film may be brought into the zinc liquid and contact the surface of the strip, affecting the fluidity of the zinc liquid. The reduction in the fluidity of the zinc liquid will affect the distribution of the zinc liquid on the surface of the strip, resulting in uneven thickness of the zinc layer, thereby affecting the uniformity of the zinc layer plating. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an automated zinc layer uniform coating equipment for galvanized steel strip and a coating system thereof.

[0005] In a first aspect, the present invention provides an automated uniform zinc coating device for galvanized steel strips, comprising a galvanizing pool, wherein two conveying rollers are symmetrically arranged inside the galvanizing pool, and further comprising:

[0006] A top cover is fixedly connected between the inner walls of the galvanizing tank, and the top cover is composed of a feed frame, a support plate and a discharge frame which are fixedly connected in sequence;

[0007] Two storage shells are symmetrically fixedly connected to the bottom of the support plate, and a plurality of air outlet holes are equidistantly opened at the bottom of each storage shell;

[0008] A gas supply system is arranged on one side of the galvanizing pool and delivers inert gas to the inside of the two storage shells through a U-shaped pipe;

[0009] A centralized drainage mechanism is arranged inside the two storage shells and is used to drain the inert gas inside the two storage shells to the feed frame and the discharge frame and spray them onto the surface of the strip;

[0010] A sensor, installed on the galvanizing pool, for monitoring the oxygen concentration inside the galvanizing pool;

[0011] A controller, when the sensor detects that the oxygen concentration inside the galvanizing pool drops below a set value, the controller is used to control the centralized drainage mechanism to drain and spray the inert gas delivered by the gas supply system onto the surface of the strip;

[0012] A zinc film breaking mechanism is arranged inside the galvanizing pool and is used to break up the zinc film;

[0013] The timer is installed on the side wall of the galvanizing pool. It starts timing after the centralized drainage mechanism is operated. It controls the zinc film breaking mechanism to operate intermittently with the help of a controller according to the set working time program.

[0014] During operation, the controller can control the equipment in an external manner or be installed on the surface of the galvanizing pool. One end of the strip passes through the frame opening of the feed frame into the galvanizing pool, and passes through the frame opening of the discharge frame after being conveyed by two conveyor rollers, completing the conveying preparation work of the strip, which is convenient for conveying the strip during the galvanizing process. After completing the conveying preparation work of the strip, inert gas is conveyed to the inside of the two storage shells through the gas supply system. The inert gas entering the storage shells is discharged into the galvanizing pool through multiple air outlets at the bottom thereof. As the inert gas entering the galvanizing pool gradually increases, it will push the original air inside the galvanizing pool out of the feed frame and the discharge frame. The oxygen content in the galvanizing pool is reduced through the discharge of the feed frame, thereby reducing the amount of zinc film produced on the surface of the galvanizing liquid due to oxidation reaction during the galvanizing process. When the sensor detects that the oxygen concentration in the galvanizing pool has dropped below the preset threshold, monitoring information is generated and sent to the controller. The controller controls the operation of the centralized drainage mechanism to drain the inert gas delivered by the gas supply system into the feed frame and the discharge frame, and spray it to both sides of the strip steel, which is conducive to creating a protective layer at the position of the feed frame and the discharge frame. The feed frame and the discharge frame are sealed with the strip steel through continuous blowing of the gas, so as to avoid the strip steel from being brought into the outside during the transportation process as much as possible. Air enters the galvanizing pool to reduce the amount of zinc film caused by oxidation reaction. When the centralized drainage mechanism starts to operate, the strip will continue to be transported and the zinc liquid will be plated with the help of the galvanizing pool. As the galvanizing process continues, the strip will inevitably bring some air into the galvanizing pool during transportation. As time goes by, the surface of the zinc liquid in the galvanizing pool will also be accompanied by the formation of zinc film. Therefore, the timer starts timing when the centralized drainage mechanism is operating, and a time information is generated every time period and sent to the controller, for example, a time information is generated every half hour and sent to the controller, so as to control the operation of the zinc film breaking mechanism. The time interval is set in advance, which is convenient for intermittent centralized treatment of the zinc film inside the galvanizing pool. The zinc film on the surface of the zinc liquid is broken up into smaller particles or fragments by the zinc film breaking mechanism. The zinc film fragments after being broken up increase the chance of contact with the zinc liquid, making it easier to merge with the zinc liquid, reducing material loss, and thus avoiding the presence of large pieces of zinc film that hinder the flow of the zinc liquid, affect the contact between the zinc liquid and the surface of the strip, and cause uneven zinc layer thickness. The zinc film may also form an uneven zinc layer on the surface of the strip, resulting in defects in the zinc layer, such as wrinkles, ripples or discontinuous zinc layers, thereby affecting the uniformity of the zinc layer coating on the strip.

[0015] Preferably, the centralized drainage mechanism comprises:

[0016] Two cavities are respectively opened inside the feed frame and the discharge frame, and the inner wall of each cavity is symmetrically penetrated with an air jet;

[0017] Two groups of first communication ports, the two groups of the first communication ports are respectively opened through the inner walls of the two cavities, the two first communication ports form a group, both ends of each storage shell are opened with second communication ports, and the bottom of each storage shell is opened with two through ports;

[0018] Two U-shaped plates are respectively vertically slidably connected inside the two storage shells, the side walls of the U-shaped plates are used to shield the second communication openings at both ends of the storage shells, and both ends of each U-shaped plate are respectively slidably connected to adjacent through openings;

[0019] Two electric cylinders are symmetrically fixedly installed on the top of the support plate, and piston rods of the two electric cylinders respectively penetrate the support plate and the storage shell and are fixedly connected to the adjacent U-shaped plates.

[0020] Preferably, the zinc film breaking up mechanism comprises:

[0021] Two chutes are symmetrically arranged on the inner wall of the galvanizing pool, and a slider is slidably connected to the inner wall of each chute;

[0022] A lateral movement mechanism is arranged on the side wall of the galvanizing pool and is used to drive the two sliders to move laterally;

[0023] A rotating rod is rotatably connected to the side wall between the two sliding blocks, and a plurality of scattering columns are fixedly connected to the surface of the rotating rod;

[0024] The driving mechanism is arranged on the inner wall of the galvanizing pool. When the rotating rod moves laterally along with the sliding block, the linkage driving mechanism drives the rotating rod to rotate.

[0025] Preferably, the lateral movement mechanism includes two motors, and the two motors are symmetrically fixed on the side walls of the galvanizing pool. The output shaft ends of the two motors pass through the galvanizing pool and extend to the inside of adjacent slideways and are respectively fixedly connected with screws. The ends of the two screws are respectively rotatably connected to the inner walls of adjacent slideways, and each screw is threadedly connected to adjacent sliders.

[0026] Preferably, the driving mechanism comprises two gears and two racks, which are symmetrically fixedly connected to the surface of the rotating rod, and the two racks are symmetrically fixedly connected to the inner wall of the galvanizing pool, and the racks and gears are meshed with each other.

[0027] Preferably, the zinc film breaking up mechanism further comprises an auxiliary breaking up component, and the auxiliary breaking up component comprises:

[0028] Two annular hollow shells are symmetrically fixedly connected to the inner wall of the galvanizing pool, and the strip steel passes through the annular inner wall of the annular hollow shell. The annular inner wall of the annular hollow shell is provided with an inclined surface, and the inclined surface is penetrated with a gas injection hole;

[0029] Two rectangular shells are symmetrically fixedly connected to the inner wall of the galvanizing pool, and both ends of each rectangular shell are fixedly connected with a circular tube. The two circular tubes at the ends of each rectangular shell are respectively fixedly connected with the inside of two annular hollow shells, and a first one-way valve is fixedly installed on the inner wall of each circular tube;

[0030] Two second one-way valves are respectively fixedly mounted on the side walls of the two rectangular shells;

[0031] Two sealing plates are respectively connected to the inner walls of the two rectangular shells in a vertical sliding manner, the side walls of each sealing plate are respectively in sealing contact with the adjacent inner walls of the rectangular shells, the bottoms of the two sealing plates are fixedly connected with rectangular plates, and the surface of each rectangular plate is provided with a guide rail, the guide rail is composed of a plurality of upper inclined openings and a plurality of lower inclined openings that are staggered and connected, and the positions of the upper inclined openings and the lower inclined openings of the two guide rails are staggered with each other;

[0032] Two mounting seats are respectively fixedly mounted on the tops of the two sliding blocks, each of the mounting seats is rotatably connected with a linkage pin, and each of the linkage pins is inserted into the inner wall of the adjacent guide rail.

[0033] In a second aspect, a plating system of an automated zinc layer uniform plating device for galvanized steel strip is provided, the plating system comprising the following steps:

[0034] When the sensor detects that the oxygen concentration inside the galvanizing pool drops below the set value, monitoring information is generated;

[0035] The sensor sends the monitoring information to the controller to control the operation of the centralized drainage mechanism and at the same time control the timer to start timing. The timer intermittently controls the operation of the zinc film breaking up mechanism with the help of the controller according to the set working time program.

[0036] Preferably, the control process of the controller includes:

[0037] The controller generates first control information and second control information after receiving the monitoring information;

[0038] The controller sends the first control information to the two electric cylinders to control the two electric cylinders to operate, and the piston rods of the two electric cylinders push the U-shaped plate downward to introduce the gas inside the storage shell into the two cavities;

[0039] The controller sends the second control information to the timer, and controls the timer to start operating in time.

[0040] Preferably, the control process of the controller also includes:

[0041] The timer generates time information intermittently according to the set working time program;

[0042] The controller generates third control information after receiving the time information;

[0043] The controller sends the third control information to the zinc film breaking up mechanism to control the zinc film breaking up mechanism to break up the zinc film.

[0044] Compared with the prior art, the present invention has the following beneficial effects:

[0045] 1. Inert gas is transported to the inside of the two storage shells through the gas supply system. The inert gas entering the storage shells is discharged into the galvanizing pool through multiple air outlets at the bottom thereof. As the amount of inert gas entering the galvanizing pool gradually increases, the original air in the galvanizing pool will be pushed out from the feed frame and the discharge frame, thereby reducing the oxygen content in the galvanizing pool, thereby reducing the amount of zinc film produced on the surface of the galvanizing liquid due to oxidation reaction during the galvanizing process. When the sensor detects that the oxygen concentration in the galvanizing pool drops below a preset threshold, monitoring information is generated and sent to the controller. The controller controls the operation of the centralized drainage mechanism, thereby draining the inert gas transported by the gas supply system into the feed frame and the discharge frame, and spraying it to both sides of the strip steel, which is conducive to creating a protective layer at the position of the feed frame and the discharge frame. The feed frame and the discharge frame are sealed with the strip steel by continuous blowing of the gas, thereby preventing the strip steel from bringing in external air into the galvanizing pool during transportation as much as possible, thereby reducing the generation of zinc film.

[0046] 2. When the centralized drainage mechanism starts to operate, the strip will continue to be transported and the zinc coating operation will be completed with the help of the galvanizing pool. As the galvanizing process continues, the strip will inevitably bring some air into the galvanizing pool during transportation. As time goes by, the surface of the zinc liquid inside the galvanizing pool will also be accompanied by the formation of a zinc film. Therefore, the timer starts timing when the centralized drainage mechanism is in operation, and generates a time information every time period and sends it to the controller. For example, a time information is generated every half an hour and sent to the controller, so as to control the operation of the zinc film breaking mechanism. The time interval is set in advance. It is convenient to carry out intermittent centralized treatment of the zinc film inside the galvanizing pool. The zinc film on the surface of the zinc liquid is broken up into smaller particles or fragments through the zinc film breaking mechanism. The zinc film fragments after being broken up increase the chance of contact with the zinc liquid, so that it is easier to merge with the zinc liquid, reduce the loss of material, and thus avoid the existence of large pieces of zinc film to hinder the flow of zinc liquid, affect the contact between the zinc liquid and the surface of the strip, and cause the phenomenon of uneven zinc layer thickness. In addition, the zinc film may also form an uneven zinc layer on the surface of the strip, resulting in defects in the zinc layer, such as wrinkles, ripples or discontinuous zinc layer, thereby affecting the uniformity of the zinc layer coating of the strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0048] Figure 2 It is a partial cross-sectional view of the present invention;

[0049] Figure 3 This is a schematic diagram of the structure of the jet opening of the present invention;

[0050] Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0051] Figure 5 This is a structural schematic diagram of the connection between the slider and the screw rod of the present invention;

[0052] Figure 6 This is a structural schematic diagram of the connection between the round pipe and the first one-way valve of the present invention;

[0053] Figure 7 This is a structural schematic diagram of the connection between the sealing plate and the rectangular plate of the present invention;

[0054] Figure 8 This is a schematic diagram of the structure of the connection between the rack and the inner wall of the galvanizing pool of the present invention;

[0055] Fig. 9 For the present invention Figure 8 The enlarged structural diagram at A in the middle;

[0056] Fig.10 The figure is a flow chart of the steps of the plating system of the present invention.

[0057] In the figure: 1. galvanizing pool; 2. conveying roller; 3. top cover; 301. feed frame; 302. support plate; 303. discharge frame; 4. storage shell; 5. air outlet; 6. gas supply system; 7. air jet; 8. U-shaped plate; 9. electric cylinder; 10. slider; 11. rotating rod; 12. breaking column; 13. motor; 14. screw; 15. gear; 16. rack; 17. annular empty shell; 18. air jet; 19. rectangular shell; 20. round tube; 21. first one-way valve; 22. second one-way valve; 23. sealing plate; 24. rectangular plate; 25. guide rail; 2501. upper inclined port; 2502. lower inclined port; 26. linkage pin; 27. cavity; 28. first connecting port; 29. ​​second connecting port. DETAILED DESCRIPTION

[0058] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0059] like Figures 1 to 9 The galvanized steel strip automatic zinc coating uniform coating equipment shown in the figure comprises a galvanizing pool 1, two conveying rollers 2 are symmetrically arranged inside the galvanizing pool 1, and further comprises:

[0060] The top cover 3 is fixedly connected between the inner walls of the galvanizing pool 1, and the top cover 3 is composed of a feed frame 301, a support plate 302 and a discharge frame 303 which are fixedly connected in sequence;

[0061] Two storage shells 4 are symmetrically fixedly connected to the bottom of the support plate 302, and a plurality of air outlet holes 5 are evenly spaced at the bottom of each storage shell 4;

[0062] The gas supply system 6 is arranged at one side of the galvanizing pool 1 and delivers inert gas to the inside of the two storage shells 4 through a U-shaped pipe;

[0063] The centralized drainage mechanism is arranged inside the two storage shells 4 and is used to drain the inert gas inside the two storage shells 4 to the feed frame 301 and the discharge frame 303 and spray them onto the surface of the steel strip;

[0064] A sensor, installed on the galvanizing pool 1, for monitoring the oxygen concentration inside the galvanizing pool 1;

[0065] A controller, when the sensor detects that the oxygen concentration inside the galvanizing pool 1 drops below a set value, the controller is used to control the centralized drainage mechanism to drain and spray the inert gas delivered by the gas supply system 6 to the surface of the strip;

[0066] The zinc film breaking mechanism is arranged inside the galvanizing pool 1 and is used to break up the zinc film;

[0067] The timer is installed on the side wall of the galvanizing pool 1, and starts timing after the centralized drainage mechanism is operated. The zinc film breaking mechanism is controlled intermittently by a controller according to the set working time program;

[0068] When the steel strip is plated with zinc liquid, the galvanizing treatment is usually completed by passing the steel strip through the zinc liquid inside the galvanizing pool 1. However, during the hot-dip galvanizing process, the zinc liquid will produce a zinc film attached to the surface of the zinc liquid due to an oxidation reaction. When the steel strip is transported through the zinc liquid, the zinc film may be brought into the zinc liquid and contact the surface of the steel strip, affecting the fluidity of the zinc liquid. The reduction in the fluidity of the zinc liquid will affect the distribution of the zinc liquid on the surface of the steel strip, resulting in uneven thickness of the zinc layer, thereby affecting the uniformity of the zinc layer plating. The technical solution can solve the above problems. The specific implementation method is as follows: when working, the controller can control the equipment in an external manner or be installed on the surface of the galvanizing pool. One end of the steel strip passes from the frame opening of the feed frame 301 to the inside of the galvanizing pool 1, and passes through two conveying After the conveying of the roller 2, it passes through the frame opening of the discharge frame 303, completing the conveying preparation work of the strip steel, which is convenient for the conveying operation of the strip steel during the galvanizing process. After completing the conveying preparation work of the strip steel, the inert gas is conveyed to the inside of the two storage shells 4 through the gas supply system 6. The inert gas entering the storage shell 4 is discharged to the inside of the galvanizing pool 1 through multiple air outlets 5 at the bottom thereof. As the inert gas entering the galvanizing pool 1 gradually increases, the original air in the galvanizing pool 1 will be pushed out from the feed frame 301 and the discharge frame 303, reducing the oxygen content in the galvanizing pool 1, thereby reducing the amount of zinc film produced on the surface of the galvanizing liquid due to oxidation reaction during the galvanizing process. When the sensor detects that the oxygen concentration in the galvanizing pool 1 drops below the preset threshold, monitoring information is generated and sent. The gas is sent to the controller, which controls the operation of the centralized drainage mechanism, so that the inert gas delivered by the gas supply system 6 is drained into the feed frame 301 and the discharge frame 303, and concentratedly sprayed to both sides of the strip, which is conducive to creating a protective layer at the position of the feed frame 301 and the discharge frame 303. The feed frame 301 and the discharge frame 303 are sealed with the strip by continuous blowing of the gas, so as to avoid the strip from bringing in external air into the galvanizing pool 1 during transportation as much as possible, and reduce the amount of zinc film caused by oxidation reaction. When the centralized drainage mechanism starts to operate, the strip will continue to be transported and the zinc liquid plating operation will be completed with the help of the galvanizing pool 1. As the galvanizing process continues, the strip will inevitably bring in some air into the galvanizing pool 1 during transportation. In the galvanizing pool 1, as time goes by, the surface of the zinc liquid inside the galvanizing pool 1 will also be accompanied by the generation of zinc film. Therefore, the timer starts timing when the centralized drainage mechanism is in operation, and generates a time information every time period and sends it to the controller. For example, a time information is generated every half an hour and sent to the controller, so as to control the operation of the zinc film breaking up mechanism. The time interval is set in advance, which is convenient for intermittent centralized treatment of the zinc film inside the galvanizing pool 1. The zinc film on the surface of the zinc liquid is broken up into smaller particles or fragments by the zinc film breaking up mechanism. The zinc film fragments after being broken up increase the chance of contact with the zinc liquid, so that it is easier to merge with the zinc liquid, reduce the loss of materials, and avoid the obstruction of the flow of the zinc liquid due to the presence of large pieces of zinc film, which affects the contact between the zinc liquid and the surface of the strip.The phenomenon of uneven zinc layer thickness occurs, and the zinc film may also form an uneven zinc layer on the surface of the strip, resulting in defects in the zinc layer, such as wrinkles, ripples or discontinuous zinc layers, thereby affecting the uniformity of the zinc layer coating of the strip; the gas supply system 6 is specifically a gas storage tank. ,

[0069] As an embodiment of the present invention, the centralized drainage mechanism includes:

[0070] Two cavities 27 are respectively provided inside the feed frame 301 and the discharge frame 303, and the inner wall of each cavity 27 is symmetrically penetrated with an air jet 7;

[0071] Two groups of first communication ports 28 are respectively opened through the inner walls of the two cavities 27, and the two first communication ports 28 form a group. Both ends of each storage shell 4 are provided with second communication ports 29, and the bottom of each storage shell 4 is provided with two through ports;

[0072] Two U-shaped plates 8 are respectively vertically slidably connected inside the two storage shells 4, and the side walls of the U-shaped plates 8 are used to cover the second communication openings 29 at both ends of the storage shells 4. Both ends of each U-shaped plate 8 are respectively slidably connected to the adjacent through openings;

[0073] Two electric cylinders 9 are symmetrically fixedly installed on the top of the support plate 302, and the piston rods of the two electric cylinders 9 respectively penetrate the support plate 302 and the storage shell 4 and are fixedly connected to the adjacent U-shaped plates 8; when working, the inert gas entering the galvanizing pool 1 will drive the internal air to be discharged from the feed frame 301 and the discharge frame 303. When the sensor detects that the oxygen content in the galvanizing pool 1 drops below the set threshold, the two electric cylinders 9 are started through the controller, and the piston rods of the two electric cylinders 9 will push the two U-shaped plates 8 to move downward, and the downwardly moved U-shaped plates 8 will cancel the two storage shells 4. The second connecting port 29 at the end is blocked, and the air outlet 5 at the bottom of the storage shell 4 is blocked after the U-shaped plate 8 moves downward, so that the inert gas inside the storage shell 4 enters the cavity 27 inside the feed frame 301 and the discharge frame 303 from the second connecting port 29 and the first connecting port 28 at both ends, and is sprayed to the surface of the strip with the help of the air jets 7 on both sides of the inner wall of the cavity, which is conducive to creating a protective layer at the position of the feed frame 301 and the discharge frame 303, reducing the entry of external air, thereby reducing the oxidation reaction of the zinc liquid and reducing the generation of zinc film.

[0074] As an embodiment of the present invention, the zinc film breaking mechanism includes:

[0075] Two chutes are symmetrically arranged on the inner wall of the galvanizing pool 1, and a slider 10 is slidably connected to the inner wall of each chute;

[0076] A lateral movement mechanism is arranged on the side wall of the galvanizing tank 1 and is used to drive the two sliders 10 to move lateraly;

[0077] A rotating rod 11 is rotatably connected to the side wall between the two sliders 10, and a plurality of scattering columns 12 are fixedly connected to the surface of the rotating rod 11;

[0078] The driving mechanism is arranged on the inner wall of the galvanizing pool 1. When the rotating rod 11 moves laterally with the slider 10, the linkage driving mechanism drives the rotating rod 11 to rotate. When working, after the controller receives the information sent by the timer, it controls the operation of the lateral moving mechanism. The lateral moving mechanism drives the slider 10 connected with the rotating rod 11 to move along the inner wall of the slideway. Since the rotating rod 11 is located above the zinc liquid, the end of the scattering column 12 connected to the surface of the rotating rod 11 is inserted into the zinc liquid. Therefore, when the rotating rod 11 moves laterally with the slider 10, the scattering column 12 is used to disperse the zinc liquid. The stirring of the surface of the zinc liquid by 12 is beneficial to breaking up the zinc film attached to the surface of the zinc liquid and increasing the contact area between the zinc film and the zinc liquid. The driving mechanism is set, and when the rotating rod 11 moves horizontally, the driving mechanism is triggered to automatically drive the rotating rod 11 to rotate, so that the rotating rod 11 rotates during the horizontal movement. During the rotation, the rotating rod 11 beats the surface of the zinc liquid with the help of the breaking column 12 connected to its surface, causing the surface of the zinc liquid to surge, which is beneficial to improving the dispersion effect of the zinc film, making the zinc film easier to merge with the zinc liquid and reducing the existence of the zinc film.

[0079] As an embodiment of the present invention, the lateral movement mechanism includes two motors 13, which are symmetrically fixedly installed on the side walls of the galvanizing pool 1. The output shaft ends of the two motors 13 penetrate the galvanizing pool 1 and extend to the inside of the adjacent chute, and are respectively fixedly connected with screws 14. The ends of the two screws 14 are respectively rotatably connected to the inner walls of the adjacent chute, and each screw 14 is threadedly connected to the adjacent slider 10. When working, the controller starts the two motors 13, and the motors 13 can rotate forward and reverse. The output shafts of the two motors 13 will drive the screws 14 to rotate. Since the screws 14 are threadedly connected to the slider 10 inside the chute, When the output shaft of the machine 13 drives the screw 14 to rotate, the two sliders 10 will be driven to move along the inner wall of the slideway, thereby driving the rotating rod 11 located above the zinc liquid to achieve lateral movement. Each time the controller controls the motor 13, the motor 13 will first complete the forward rotation and then perform the reverse rotation reset. The slider 10 and the rotating rod 11 are driven by the screw 14 to perform a lateral reciprocating movement, so that the rotating rod 11 equipped with the breaking column 12 is automatically reset after each operation is completed, which is convenient for the next use. At the same time, during the resetting process, it is convenient to break up the remaining zinc film for the second time, further improving the effect of breaking up and eliminating the zinc film.

[0080] As an embodiment of the present invention, the driving mechanism includes two gears 15 and two racks 16, which are symmetrically fixedly connected to the surface of the rotating rod 11, and the two racks 16 are symmetrically fixedly connected to the inner wall of the galvanizing pool 1, and the racks 16 and the gears 15 are meshed with each other; when working, during the lateral movement of the rotating rod 11, the gear 15 fixedly connected to the surface of the rotating rod 11 will rotate under the transmission of the rack 16, and the rotation of the gear 15 drives the rotating rod 11 to rotate synchronously, thereby improving the breaking up effect of the breaking up column 12 on the zinc film during the movement.

[0081] As an embodiment of the present invention, the zinc film breaking mechanism further includes an auxiliary breaking component, and the auxiliary breaking component includes:

[0082] Two annular hollow shells 17 are symmetrically fixedly connected to the inner wall of the galvanizing pool 1, and the steel strip passes through the annular inner wall of the annular hollow shell. The annular inner wall of the annular hollow shell 17 is provided with an inclined surface, and the inclined surface is penetrated with a gas injection hole 18;

[0083] Two rectangular shells 19 are symmetrically fixedly connected to the inner wall of the galvanizing pool 1, and both ends of each rectangular shell 19 are fixedly connected with a circular tube 20. The two circular tubes 20 at the ends of each rectangular shell 19 are respectively fixedly connected with the inside of the two annular hollow shells, and a first one-way valve 21 is fixedly installed on the inner wall of each circular tube 20;

[0084] Two second one-way valves 22 are fixedly mounted on the side walls of the two rectangular shells 19 respectively;

[0085] Two sealing plates 23 are respectively connected to the inner walls of the two rectangular shells 19 in a vertical sliding manner. The side walls of each sealing plate 23 are respectively in sealing contact with the inner walls of the adjacent rectangular shells 19. The bottoms of the two sealing plates 23 are fixedly connected with rectangular plates 24. A guide rail 25 is provided on the surface of each rectangular plate 24. The guide rail 25 is composed of a plurality of upper inclined openings 2501 and a plurality of lower inclined openings 2502 that are interlaced and connected. The positions of the upper inclined openings 2501 and the lower inclined openings 2502 of the two guide rails 25 are staggered with each other.

[0086] Two mounting seats are fixedly mounted on the top of two sliders 10, and each mounting seat is rotatably connected with a linkage pin 26, and each linkage pin 26 is inserted into the inner wall of the adjacent guide rail 25; when working, the zinc liquid located below the feed frame 301 and the discharge frame 303 is closer to the inlet and outlet position of the strip steel at the top of the galvanizing pool 1, so the zinc liquid here is more likely to react with part of the air brought in during the conveying process of the strip steel to produce a zinc film, and due to the conveying obstruction of the strip steel, the zinc film here is not easily broken up by the breaking column 12, thereby affecting the plating of the zinc layer. The technical solution can solve the above problems. The specific implementation method is as follows: during the lateral movement of the slider 10, the linkage pin 26 will be synchronously driven to move lateral. Since the positions of the upper inclined openings 2501 and the lower inclined openings 2502 of the two guide rails 25 are staggered, in the initial state, one linkage pin 26 is located at the upper inclined opening 2501 end position of the corresponding guide rail 25 end, and the other linkage pin 26 is located at the lower inclined opening 2502 end position of the corresponding guide rail 25 end, supporting the two sealing plates 23 located at the two rectangular shells 1. 9, in the process of the linkage pin 26 moving laterally with the slider 10, the sealing plate 23 is pulled to move vertically back and forth along the inner wall of the rectangular shell 19 by means of the cooperation between the two linkage pins 26 and the two guide rails 25, and the moving directions of the two sealing plates 23 are opposite. In the process of the sealing plates 23 moving upward, the airflow inside the rectangular shell 19 is compressed, so that the airflow inside the rectangular shell 19 is pushed into the two annular empty shells 17 by means of the first one-way valves 21 at both ends, and is ejected by means of the jet holes 18. The air ejected from the jet holes 18 The flow will blow toward the zinc liquid below, thereby blowing the zinc film attached to the surface of the zinc liquid, which is beneficial to the fusion of the zinc film and the zinc liquid. At the same time, the blown zinc film increases the possibility of being broken up by the breaking column 12 during the floating process, thereby optimizing the effect of the zinc film being broken up, further improving the treatment effect of the zinc film, and reducing the influence of the zinc film on the uniformity of the zinc layer. It can be seen from the above that the zinc film may affect the contact between the zinc liquid and the surface of the strip, resulting in uneven thickness of the zinc layer. By blowing up the zinc film, it can be ensured that the zinc liquid is in more uniform contact with the surface of the strip, thereby improving the uniformity of the zinc layer.

[0087] The second one-way valve 22 is set to facilitate the airflow to enter the interior of the rectangular shell 19 through the second one-way valve 22 when the sealing plate 23 slides down the inner wall of the rectangular shell 19, thereby maintaining the air pressure balance inside and outside the rectangular shell 19; the positions of the upper inclined opening 2501 and the lower inclined opening 2502 of the two guide rails 25 are staggered with each other, so as to make the moving directions of the two sealing plates 23 opposite, to ensure that when the slider 10 drives the rotating rod 11 connected to the breaking column 12 to move horizontally, there is always airflow delivered to the two annular empty shells 17, thereby ensuring that the airflow can be continuously ejected during the breaking process.

[0088] like Fig.10A coating system of a galvanized steel strip automated zinc layer uniform coating equipment is shown, and the coating system comprises the following steps:

[0089] When the sensor detects that the oxygen concentration inside the galvanizing pool 1 drops below a set value, monitoring information is generated;

[0090] The sensor sends the monitoring information to the controller to control the operation of the centralized drainage mechanism and at the same time control the timer to start timing. The timer intermittently controls the operation of the zinc film breaking up mechanism with the help of the controller according to the set working time program.

[0091] As an implementation mode of the present invention, it is characterized in that the control process of the controller includes:

[0092] The controller generates first control information and second control information after receiving the monitoring information;

[0093] The controller sends the first control information to the two electric cylinders 9 to control the two electric cylinders 9 to operate, and the piston rods of the two electric cylinders 9 push the U-shaped plate 8 downward to introduce the gas inside the storage shell 4 into the two cavities 27;

[0094] The controller sends the second control information to the timer, and controls the timer to start operating in time.

[0095] As an implementation mode of the present invention, it is characterized in that the control process of the controller further includes:

[0096] The timer generates time information intermittently according to the set working time program;

[0097] The controller generates third control information after receiving the time information;

[0098] The controller sends the third control information to the zinc film breaking up mechanism to control the zinc film breaking up mechanism to break up the zinc film.

[0099] Working principle of the present invention: when working, the controller can control the equipment in an external manner or be installed on the surface of the galvanizing pool. One end of the strip steel passes through the frame opening of the feed frame 301 to the inside of the galvanizing pool 1, and passes through the frame opening of the discharge frame 303 after being conveyed by two conveying rollers 2, completing the conveying preparation work of the strip steel, which is convenient for conveying the strip steel during the galvanizing process. After completing the conveying preparation work of the strip steel, inert gas is conveyed to the inside of the two storage shells 4 through the gas supply system 6. The inert gas entering the storage shell 4 is discharged into the inside of the galvanizing pool 1 through multiple air outlets 5 at the bottom thereof. As the inert gas entering the inside of the galvanizing pool 1 gradually increases, it will push the original gas inside the galvanizing pool 1 to Some air is discharged from the feed frame 301 and the discharge frame 303 to reduce the oxygen content inside the galvanizing pool 1, thereby reducing the zinc content generated by the oxidation reaction on the surface of the galvanizing liquid during the galvanizing process. When the sensor detects that the oxygen concentration inside the galvanizing pool 1 drops below a preset threshold, monitoring information is generated and sent to the controller, and the controller controls the operation of the centralized drainage mechanism to drain the inert gas delivered by the gas supply system 6 into the feed frame 301 and the discharge frame 303, and spray it to both sides of the strip, which is conducive to creating a protective layer at the position of the feed frame 301 and the discharge frame 303, and the feed frame 301 and the discharge frame 303 are continuously blown to form a protective layer between the strip and the discharge frame 303. To achieve sealing, to avoid the steel strip from bringing in external air into the galvanizing pool 1 during transportation as much as possible, and to reduce the amount of zinc film caused by oxidation reaction, when the centralized drainage mechanism starts to operate, the steel strip will continue to be transported and the zinc liquid plating operation will be completed with the help of the galvanizing pool 1. As the galvanizing process continues, the steel strip will inevitably bring in some air into the galvanizing pool 1 during transportation. As time goes by, the surface of the zinc liquid in the galvanizing pool 1 will also be accompanied by the formation of zinc film. Therefore, the timer starts timing when the centralized drainage mechanism is in operation, and a time information is generated every time period and sent to the controller, for example, a time information is generated every half hour and sent to the controller. The operation of the zinc film breaking-up mechanism is controlled, and the time interval is set in advance, so as to facilitate the intermittent centralized treatment of the zinc film inside the galvanizing pool 1. The zinc film on the surface of the zinc liquid is broken up into smaller particles or fragments by the zinc film breaking-up mechanism. The zinc film fragments after being broken up have an increased chance of contacting with the zinc liquid, so that they are easier to merge with the zinc liquid, thus reducing the loss of materials, thereby avoiding the presence of large pieces of zinc film that hinder the flow of the zinc liquid, affecting the contact between the zinc liquid and the surface of the strip, and causing the phenomenon of uneven zinc layer thickness. In addition, the zinc film may also form an uneven zinc layer on the surface of the strip, resulting in defects in the zinc layer, such as wrinkles, ripples or discontinuous zinc layers, thereby affecting the uniformity of the zinc layer coating on the strip.

[0100] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. An automated uniform zinc coating equipment for galvanized steel strips, comprising a galvanizing pool (1), wherein two conveying rollers (2) are symmetrically arranged inside the galvanizing pool (1), characterized in that: Also includes: A top cover (3) is fixedly connected between the inner walls of the galvanizing pool (1), and the top cover (3) is composed of a feed frame (301), a support plate (302) and a discharge frame (303) which are fixedly connected in sequence; Two storage shells (4) are symmetrically fixedly connected to the bottom of the support plate (302), and the bottom of each storage shell (4) is provided with a plurality of air outlet holes (5) at equal intervals; A gas supply system (6) is arranged on one side of the galvanizing pool (1) and transports inert gas to the inside of the two storage shells (4) through a U-shaped pipe; A centralized drainage mechanism is arranged inside the two storage shells (4) and is used to drain the inert gas inside the two storage shells (4) into the feed frame (301) and the discharge frame (303) and spray them onto the surface of the steel strip; A sensor, installed on the galvanizing pool (1), for monitoring the oxygen concentration inside the galvanizing pool (1); A controller, when the sensor detects that the oxygen concentration inside the galvanizing pool (1) drops below a set value, the controller is used to control the centralized drainage mechanism to drain and spray the inert gas delivered by the gas supply system (6) toward the surface of the steel strip; A zinc film breaking up mechanism is arranged inside the zinc plating pool (1) and is used to break up the zinc film; The timer is installed on the side wall of the galvanizing pool (1), and starts timing after the centralized drainage mechanism is operated. The zinc film breaking mechanism is controlled to operate intermittently by means of a controller according to a set working time program.

2. The galvanized steel strip automatic zinc coating uniform coating equipment according to claim 1, characterized in that: The centralized drainage mechanism comprises: Two cavities (27) are respectively provided inside the feed frame (301) and the discharge frame (303), and an air jet (7) is symmetrically provided through the inner wall of each cavity (27); Two groups of first communication ports (28), the two groups of first communication ports (28) respectively penetrate and are opened on the inner walls of the two cavities (27), the two first communication ports (28) form a group, both ends of each storage shell (4) are provided with second communication ports (29), and the bottom of each storage shell (4) is provided with two through ports; Two U-shaped plates (8) are respectively vertically slidably connected inside the two storage shells (4); the side walls of the U-shaped plates (8) are used to shield the second communication openings (29) at the two ends of the storage shells (4); and the two ends of each U-shaped plate (8) are respectively slidably connected to adjacent through openings; Two electric cylinders (9) are symmetrically fixedly mounted on the top of the support plate (302), and piston rods of the two electric cylinders (9) respectively penetrate the support plate (302) and the storage shell (4) and are fixedly connected to a nearby U-shaped plate (8).

3. The galvanized steel strip automatic zinc coating uniform coating equipment according to claim 2, characterized in that: The zinc film breaking mechanism comprises: Two slide grooves are symmetrically arranged on the inner wall of the galvanizing pool (1), and a slider (10) is slidably connected to the inner wall of each slide groove; A lateral movement mechanism, arranged on the side wall of the galvanizing pool (1), and used for driving the two sliders (10) to move lateraly; A rotating rod (11) is rotatably connected to the side wall between the two sliding blocks (10), and a plurality of scattering columns (12) are fixedly connected to the surface of the rotating rod (11); The driving mechanism is arranged on the inner wall of the galvanizing pool (1), and when the rotating rod (11) moves laterally along with the slider (10), the linkage driving mechanism drives the rotating rod (11) to rotate.

4. The automatic uniform zinc coating equipment for galvanized steel strip according to claim 3, characterized in that: The lateral movement mechanism comprises two motors (13), the two motors (13) are symmetrically fixedly mounted on the side walls of the galvanizing pool (1), the output shaft ends of the two motors (13) penetrate the galvanizing pool (1) and extend to the inside of adjacent slideways, and are respectively fixedly connected with screws (14), the ends of the two screws (14) are respectively rotatably connected to the inner walls of adjacent slideways, and each screw (14) is threadedly connected to an adjacent slider (10).

5. The automatic uniform zinc coating equipment for galvanized steel strip according to claim 3, characterized in that: The driving mechanism comprises two gears (15) and two racks (16), which are symmetrically fixedly connected to the surface of the rotating rod (11); the two racks (16) are symmetrically fixedly connected to the inner wall of the galvanizing pool (1); and the racks (16) and the gears (15) are meshed with each other.

6. The automatic uniform zinc coating equipment for galvanized steel strip according to claim 3, characterized in that: The zinc film breaking up mechanism further comprises an auxiliary breaking up component, and the auxiliary breaking up component comprises: Two annular hollow shells (17) are symmetrically fixedly connected to the inner wall of the galvanizing pool (1), and the steel strip passes through the annular inner wall of the annular hollow shell. The annular inner wall of the annular hollow shell (17) is provided with an inclined surface, and the inclined surface is penetrated by a gas injection hole (18); Two rectangular shells (19) are symmetrically fixedly connected to the inner wall of the galvanizing pool (1), and both ends of each rectangular shell (19) are fixedly connected to a circular tube (20). The two circular tubes (20) at the ends of each rectangular shell (19) are respectively fixedly connected to the inside of two annular hollow shells, and a first one-way valve (21) is fixedly installed on the inner wall of each circular tube (20); Two second one-way valves (22) are respectively fixedly mounted on the side walls of the two rectangular shells (19); Two sealing plates (23) are respectively connected to the inner walls of the two rectangular shells (19) in a vertical sliding manner, and the side walls of each sealing plate (23) are respectively in sealing contact with the inner walls of the adjacent rectangular shells (19). The bottoms of the two sealing plates (23) are fixedly connected to a rectangular plate (24), and a guide rail (25) is provided on the surface of each rectangular plate (24). The guide rail (25) is composed of a plurality of upper inclined openings (2501) and a plurality of lower inclined openings (2502) that are interlaced and connected, and the positions of the upper inclined openings (2501) and the lower inclined openings (2502) of the two guide rails (25) are staggered with each other; Two mounting seats are fixedly mounted on the tops of the two slide blocks (10) respectively, and each mounting seat is rotatably connected with a linkage pin (26), and each linkage pin (26) is inserted into the inner wall of the adjacent guide rail (25).

7. A plating system for an automated uniform zinc coating equipment for galvanized steel strip, suitable for an automated uniform zinc coating equipment for galvanized steel strip as claimed in any one of claims 2 to 6, characterized in that: The plating system comprises the following steps: When the sensor detects that the oxygen concentration inside the galvanizing pool (1) drops below a set value, monitoring information is generated; The sensor sends the monitoring information to the controller to control the operation of the centralized drainage mechanism and control the timer to start timing. The timer intermittently controls the operation of the zinc film breaking up mechanism with the help of the controller according to the set working time program.

8. The coating system of the galvanized steel strip automatic zinc layer uniform coating equipment according to claim 7, characterized in that: The control process of the controller includes: The controller generates first control information and second control information after receiving the monitoring information; The controller sends the first control information to the two electric cylinders (9), controls the two electric cylinders (9) to operate, pushes the U-shaped plate (8) downward through the piston rods of the two electric cylinders (9), and introduces the gas inside the storage shell (4) into the two cavities (27); The controller sends the second control information to the timer to control the timer to start timing operation.

9. The plating system of the galvanized steel strip automatic zinc layer uniform plating equipment according to claim 8, characterized in that: The control process of the controller also includes: The timer generates time information intermittently according to the set working time program; The controller generates third control information after receiving the time information; The controller sends the third control information to the zinc film breaking up mechanism to control the zinc film breaking up mechanism to break up the zinc film.

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