Strip steel surface galvanizing device

Abstract

The utility model relates to a strip steel surface galvanizing device and belongs to the technical field of strip steel processing. Strip steel penetrating through the galvanizing bath is limited through the limiting roller and the pressing roller, galvanizing liquid is recycled through matched use of the liquid storage tank, the centrifugal pump, the liquid outlet pipe and the backflow pipe, the liquidity of the galvanizing liquid is enhanced, waste of the galvanizing liquid is reduced, components in the galvanizing liquid are evenly distributed, and the galvanizing quality is improved. The situation that local plating layers are too thick or too thin is avoided, so that the quality of strip steel zinc plating layers is improved, the net-shaped filter cartridge is arranged at the end of the liquid outlet pipe and used for filtering impurities existing in zinc plating liquid, and the zinc plating effect of strip steel is further guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of strip steel processing, and in particular relates to a strip steel surface galvanizing device. Background Art

[0002] Strip steel is a narrow and long steel plate produced by various steel rolling enterprises to meet the needs of industrial production of various metal or mechanical products in different industrial sectors. Strip steel galvanizing is to immerse the strip steel in galvanizing liquid to form a zinc coating on the surface of the strip steel through chemical reaction to improve the corrosion resistance of the strip steel.

[0003] At present, the strip is usually placed in a galvanizing tank filled with galvanizing liquid for galvanizing. Since most galvanizing tanks do not have the circulation function of the galvanizing liquid, the fluidity of the galvanizing liquid is poor and cannot be evenly covered on the surface of the strip, resulting in uneven zinc coating and inconsistent thickness of the strip, thereby affecting the galvanizing quality of the strip. In addition, during the galvanizing process of the strip, some impurities such as iron filings, zinc slag, etc. will exist in the galvanizing liquid. These impurities will affect the quality of the zinc coating, thereby reducing the anti-corrosion performance of the strip. Summary of the invention

[0004] In order to overcome the problem that most of the galvanizing tanks currently used in the background technology do not have the circulation function of the galvanizing liquid, so that the fluidity of the galvanizing liquid is poor, and it cannot be evenly covered on the surface of the steel strip, resulting in uneven zinc coating of the steel strip and inconsistent thickness, thereby affecting the galvanizing quality of the steel strip. In addition, during the galvanizing process of the steel strip, some impurities will exist in the galvanizing liquid, which will affect the quality of the zinc coating, thereby reducing the anti-corrosion performance of the steel strip. The utility model provides a strip surface galvanizing device; the steel strip passing through the galvanizing tank is limited by a limiting roller and a pressure roller, and the galvanizing liquid is circulated by a liquid storage tank, a centrifugal pump, a liquid outlet pipe, and a reflux pipe. Not only the fluidity of the galvanizing liquid is enhanced, but also the waste of the galvanizing liquid is reduced, so that the components in the galvanizing liquid are evenly distributed, and the situation of excessively thick or thin local coating is avoided, thereby improving the quality of the galvanized layer of the steel strip, and a mesh filter cylinder is arranged at the end of the liquid outlet pipe to filter impurities in the galvanizing liquid, further ensuring the galvanizing effect of the steel strip.

[0005] To achieve the above-mentioned purpose, the utility model is realized through the following technical scheme: a strip steel surface galvanizing device mainly comprises a frame, a galvanizing tank, a liquid storage tank, a limit roller, a pressure roller, a centrifugal pump, a mesh filter cartridge, a controller, a dust cover, a serpentine electric heating tube, a first partition, a second partition, a first liquid storage tank, a second liquid storage tank, a third liquid storage tank, a liquid outlet pipe, a bracket, a reflux pipe, a first liquid level sensor, and a temperature sensor. The galvanizing tank is installed on the frame, and the galvanizing tank is divided into the first liquid storage tank, the second liquid storage tank and the third liquid storage tank by the first partition and the second partition. The first liquid level sensor is installed at the bottom of the second liquid storage tank. The liquid storage tank is installed on the frame and is located at the bottom of the galvanizing tank. The temperature sensor is installed in the liquid storage tank. The second liquid storage tank and the third liquid storage tank are The bottom of the third liquid storage tank is connected with the liquid storage tank through a liquid outlet pipe, and a solenoid valve is installed on the liquid outlet pipe. A mesh filter cartridge for easy disassembly and assembly is threadedly connected at the liquid outlet of the liquid outlet pipe, and the mesh filter cartridge is located inside the liquid storage tank. The centrifugal pump is installed on the bracket, and the water inlet of the centrifugal pump is connected with the liquid storage tank through a pipeline, and the water outlet of the centrifugal pump is connected with the second liquid storage tank through a reflux pipe. A serpentine electric heating tube for heating the galvanizing liquid is installed at the bottom of the liquid storage tank through a fixing part, and a controller is installed on the frame, and the controller is electrically connected to the first liquid level sensor, the temperature sensor, the serpentine electric heating tube, and the centrifugal pump respectively; a dust cover is hinged on the top of the galvanizing tank, and a plurality of pressure rollers for pressing the strip into the galvanizing liquid are installed at the bottom of the dust cover, and limiting rollers for winding the strip are installed at both ends of the frame.

[0006] The limiting roller is provided with a plurality of limiting grooves equidistantly along the axial direction for limiting the strip steel, and the strip steel is wound in the limiting grooves.

[0007] A hot air blower is installed on the frame, and the hot air blower is electrically connected to the controller. Shell covers are installed at both ends of the dust cover, and the shell covers are respectively located directly above the first liquid storage tank and the third liquid storage tank. A mesh plate for air circulation is provided inside the shell cover, and the top of the shell cover is connected to the air outlet of the hot air blower through a corrugated pipe.

[0008] A connecting plate is arranged on the top of the dust cover, an oil cylinder is hinged on the frame, and a piston rod of the oil cylinder is hinged on the connecting plate.

[0009] An openable box cover is installed on the top of the liquid storage tank, and a liquid supply pipe and a liquid discharge pipe connected to the interior of the liquid storage tank are arranged on the side wall of the liquid storage tank. Switch valves are installed on the liquid supply pipe and the liquid discharge pipe. A second liquid level sensor is arranged inside the liquid storage tank, and the second liquid level sensor is electrically connected to the controller.

[0010] Beneficial effects of the utility model:

[0011] The utility model limits the position of the steel strip passing through the galvanizing tank by means of a limiting roller and a pressing roller, and circulates the galvanizing liquid by means of a liquid storage tank, a centrifugal pump, a liquid outlet pipe and a reflux pipe, which not only enhances the fluidity of the galvanizing liquid, but also reduces the waste of the galvanizing liquid, so that the components in the galvanizing liquid are evenly distributed, and the situation that the local coating is too thick or too thin is avoided, thereby improving the quality of the galvanized layer of the steel strip, and a mesh filter cylinder is arranged at the end of the liquid outlet pipe to filter impurities in the galvanizing liquid, thereby further ensuring the galvanizing effect of the steel strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This utility model is a three-dimensional schematic diagram Figure 1 .

[0013] Figure 2 This utility model is a three-dimensional schematic diagram Figure 2 .

[0014] Figure 3 This utility model is a three-dimensional schematic diagram Figure 3 .

[0015] Figure 4 It is the front view of the utility model.

[0016] Figure 5 It is a sectional stereoscopic schematic diagram of the utility model.

[0017] Figure 6 It is a sectional view of the working state of the utility model.

[0018] Figure 7 It is a three-dimensional schematic diagram of the limiting roller.

[0019] Figure 8 It is a three-dimensional schematic diagram of a mesh filter cartridge. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings to facilitate understanding by technicians.

[0021] The utility model discloses a strip steel surface galvanizing device, the strip steel surface galvanizing device mainly comprises a frame 1, a galvanizing tank 2, a liquid storage tank 3, a limit roller 4, a pressure roller 5, a centrifugal pump 6, a mesh filter cartridge 7, a controller 8, a dust cover 9, a serpentine electric heating pipe 10, a first partition plate 11, a second partition plate 12, a first liquid storage tank 13, a second liquid storage tank 14, a third liquid storage tank 15, a liquid outlet pipe 16, a bracket 17, a reflux pipe 18, a first liquid level sensor 19, a temperature sensor 24, the frame 1 is provided with a galvanizing tank 2, the galvanizing tank 2 is divided into a first liquid storage tank 13, a second liquid storage tank 14 and a third liquid storage tank 15 by a first partition plate 11 and a second partition plate 12, a first liquid level sensor 19 is installed at the bottom of the second liquid storage tank 14, a liquid storage tank 3 is installed on the frame 1, and is located at the bottom of the galvanizing tank 2, a temperature sensor 24 is installed in the liquid storage tank 3, the bottoms of the second liquid storage tank 14 and the third liquid storage tank 15 are connected to the liquid storage tank 3 through a liquid outlet pipe 16, a solenoid valve is installed on the liquid outlet pipe 16, and the liquid outlet pipe 16 is provided with a solenoid valve. The outlet of the centrifugal pump 6 is threadedly connected with a mesh filter cartridge 7 for easy disassembly and assembly, the mesh filter cartridge 7 is located inside the liquid storage tank 3, the centrifugal pump 6 is installed on the bracket 17, the water inlet of the centrifugal pump 6 is connected to the liquid storage tank 3 through a pipeline, the water outlet of the centrifugal pump 6 is connected to the second liquid storage tank 14 through a reflux pipe 18, and a serpentine electric heating tube 10 for heating the galvanizing liquid is installed at the bottom of the liquid storage tank 3 through a fixing part, and the controller 8 is installed on the frame 1, and the controller 8 is respectively connected to the first liquid level sensor 19, the temperature sensor 24, the serpentine electric The heat pipe 10 and the centrifugal pump 6 are electrically connected; a dust cover 9 is hinged on the top of the galvanizing tank 2, and a plurality of pressure rollers 5 for pressing the strip into the galvanizing liquid are installed at the bottom of the dust cover 9. A connecting plate 901 is arranged on the top of the dust cover 9. A cylinder 22 is hinged on the frame 1, and the piston rod of the cylinder 22 is hinged on the connecting plate 901. Limiting rollers 4 for winding the strip are installed at both ends of the frame 1. A plurality of limiting grooves 401 for limiting the strip are equidistantly provided on the limiting roller 4 along the axial direction, and the strip is wound in the limiting grooves 401.

[0022] When in use, one end of the strip is wound around the limit rollers 4 at both ends of the galvanizing tank 2 in sequence and connected to the winding device. The operator turns on the power switch of the serpentine electric heating tube 10 through the controller 8 to heat the galvanizing liquid in the liquid storage tank 3 to make it reach the temperature set by the controller 8, and monitors the temperature of the galvanizing liquid through the first liquid level sensor 19. After the heating is completed, the centrifugal pump 6 is started. At this time, the solenoid valve on the liquid outlet pipe 16 is in a closed state. The galvanizing liquid in the liquid storage tank 3 is extracted by the centrifugal pump 6 and flows into the second liquid storage tank 14 along the reflux pipe 18. The liquid level height of the galvanizing liquid in the second liquid storage tank 14 is detected by the first liquid level sensor 19, and the data is transmitted to the controller 8. When the liquid level value set by the controller 8 is reached, the solenoid valve on the liquid outlet pipe 16 is opened, and the galvanizing liquid in the second liquid storage tank 14 is discharged to the liquid storage tank through the liquid outlet pipe 16. The galvanizing solution continues to circulate in the box 3, which not only enhances the fluidity of the galvanizing solution, but also reduces the waste of the galvanizing solution, so that the components in the galvanizing solution are evenly distributed, avoiding the situation where the local coating is too thick or too thin, thereby improving the quality of the galvanized layer of the steel strip. The oil cylinder 22 is started to work, and the oil cylinder 22 drives the piston rod to move, and drives the dust cover 9 to close through the connecting plate 901. At this time, the pressure roller 5 at the bottom of the dust cover 9 presses the steel strip into the second liquid storage tank 14 to immerse it in the galvanizing solution. Then, the winding device is started to work, and the winding device winds and pulls the steel strip to move continuously, and a layer of zinc coating is formed on the surface of the steel strip through chemical reaction to improve the corrosion resistance of the steel strip. During the circulation of the galvanizing solution, the mixed impurities are filtered through the mesh filter cylinder 7. The operator regularly removes the filter cylinder 7 to remove the impurities inside it, further ensuring the galvanizing effect of the steel strip.

[0023] The frame 1 is provided with a hot air blower 23, which is electrically connected to the controller 8. Shell covers 20 are installed at both ends of the dust cover 9. The shell covers 20 are respectively located directly above the first liquid storage tank 13 and the third liquid storage tank 15. A mesh plate 21 for air circulation is provided in the shell cover 20. The top of the shell cover 21 is connected to the air outlet of the hot air blower 23 through a bellows. When the hot air blower 23 is started, the hot air blown out by the hot air blower 23 flows through the pipeline to the shell cover 20 at both ends of the dust cover 9 and passes through the mesh plate. The plate 21 is blown evenly to the surface of the strip, and the hot air is discharged through the shell cover 20 above the first liquid storage tank 13, which can dry the pickling water attached to the strip, effectively avoid the reaction between water and zinc liquid, and improve the quality and uniformity of the galvanized layer. The hot air is discharged through the shell cover 20 above the third liquid storage tank 15, which can effectively remove moisture from the surface of the strip, prevent oxidation and corrosion of the zinc layer, and improve the quality and appearance quality of the zinc layer. At the same time, the drying process can also speed up the drying speed of the strip.

[0024] An openable tank cover 301 is installed on the top of the liquid storage tank 3, and a liquid supply pipe 302 and a liquid discharge pipe 303 connected to the interior of the liquid storage tank 3 are arranged on the side wall of the liquid storage tank 3, and switch valves are installed on the liquid supply pipe 302 and the liquid discharge pipe 303. A second liquid level sensor 25 is arranged inside the liquid storage tank 3, and the second liquid level sensor 25 is electrically connected to the controller 8; when the liquid level in the liquid storage tank 3 is insufficient, the second liquid level sensor 25 transmits a signal to the controller 8 for processing and display, so that the operator can replenish the galvanizing liquid or discharge the liquid regularly.

[0025] Working process:

[0026] When in use, one end of the strip is wound around the limit rollers 4 at both ends of the galvanizing tank 2 in sequence and connected to the winding device. The operator turns on the power switch of the serpentine electric heating tube 10 through the controller 8 to heat the galvanizing liquid in the liquid storage tank 3 to make it reach the temperature set by the controller 8, and monitors the temperature of the galvanizing liquid through the first liquid level sensor 19. After the heating is completed, the centrifugal pump 6 is started. At this time, the solenoid valve on the liquid outlet pipe 16 is in a closed state, and the galvanizing liquid in the liquid storage tank 3 is extracted by the centrifugal pump 6, so that it flows into the second liquid storage tank 14 along the reflux pipe 18 and passes through the first liquid level sensor 19. The sensor 19 detects the liquid level of the galvanizing liquid in the second liquid storage tank 14 and transmits the data to the controller 8. When the liquid level reaches the value set by the controller 8, the solenoid valve on the liquid outlet pipe 16 is opened, and the galvanizing liquid in the second liquid storage tank 14 is discharged to the liquid storage tank 3 through the liquid outlet pipe 16 to continue to circulate, which not only enhances the fluidity of the galvanizing liquid, but also reduces the waste of the galvanizing liquid, so that the components in the galvanizing liquid are evenly distributed, avoiding the situation where the local coating is too thick or too thin, thereby improving the quality of the galvanized layer of the strip steel, and starting the oil cylinder 22 to work, and the oil cylinder 22 drives the piston rod to move, and the oil cylinder 22 is connected to the piston rod 22. Plate 901 drives the dust cover 9 to close. At this time, the pressure roller 5 at the bottom of the dust cover 9 presses the strip into the second liquid storage tank 14 to immerse it in the galvanizing solution, and starts the hot air blower 23. The hot air blown by the hot air blower 23 flows through the pipe to the shell cover 20 at both ends of the dust cover 9, and is evenly blown to the surface of the strip through the mesh plate 21. The hot air is discharged through the shell cover 20 above the first liquid storage tank 13, which can dry the pickling water attached to the strip, effectively avoid the reaction between water and zinc liquid, and improve the quality and uniformity of the galvanized layer. The hot air passes through the shell cover 20 above the third liquid storage tank 15. The air outlet of the shell cover 20 can effectively remove moisture from the surface of the steel strip, prevent oxidation and corrosion of the zinc layer, and improve the quality and appearance of the zinc layer. At the same time, the drying process can also speed up the drying speed of the steel strip. Then, the winding device is started to work, and the winding device winds and pulls the steel strip to move continuously. A zinc coating is formed on the surface of the steel strip through a chemical reaction to improve the corrosion resistance of the steel strip. During the circulation of the galvanizing liquid, the mixed impurities are filtered through the mesh filter cartridge 7. The operator regularly removes the filter cartridge 7 to remove the impurities inside it, which further ensures the galvanizing effect of the steel strip.

[0027] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the utility model.

Claims

1. A strip steel surface galvanizing device, characterized in that: The strip steel surface galvanizing device comprises a frame (1), a galvanizing tank (2), a liquid storage tank (3), a limit roller (4), a pressure roller (5), a centrifugal pump (6), a mesh filter cartridge (7), a controller (8), a dust cover (9), a serpentine electric heating tube (10), a first partition plate (11), a second partition plate (12), a first liquid storage tank (13), a second liquid storage tank (14), a third liquid storage tank (15), a liquid outlet pipe (16), a bracket (17), a reflux pipe (18), a first liquid level sensor (19), A temperature sensor (24) is provided on the frame (1), wherein a galvanizing tank (2) is installed, wherein the galvanizing tank (2) is divided into a first liquid storage tank (13), a second liquid storage tank (14) and a third liquid storage tank (15) by a first partition plate (11) and a second partition plate (12), wherein a first liquid level sensor (19) is installed at the bottom of the second liquid storage tank (14), and a liquid storage tank (3) is installed on the frame (1) and is located at the bottom of the galvanizing tank (2), wherein a temperature sensor (24) is installed in the liquid storage tank (3), wherein the second liquid storage tank (14) and The bottom of the third liquid storage tank (15) is connected to the liquid storage tank (3) through a liquid outlet pipe (16). A solenoid valve is installed on the liquid outlet pipe (16). A mesh filter cartridge (7) that is easy to disassemble is threadedly connected to the liquid outlet of the liquid outlet pipe (16). The mesh filter cartridge (7) is located inside the liquid storage tank (3). The centrifugal pump (6) is installed on the bracket (17). The water inlet of the centrifugal pump (6) is connected to the liquid storage tank (3) through a pipeline. The water outlet of the centrifugal pump (6) is connected to the second liquid storage tank (14) through a return pipe (18). The liquid storage tank ( 3) A serpentine electric heating tube (10) for heating the galvanizing liquid is installed at the bottom through a fixing part, and a controller (8) is installed on the frame (1). The controller (8) is electrically connected to the first liquid level sensor (19), the temperature sensor (24), the serpentine electric heating tube (10), and the centrifugal pump (6) respectively; a dust cover (9) is hingedly connected to the top of the galvanizing tank (2), and a plurality of pressure rollers (5) for pressing the strip into the galvanizing liquid are installed at the bottom of the dust cover (9), and limit rollers (4) for winding the strip are installed at both ends of the frame (1).

2. A strip steel surface galvanizing device as claimed in claim 1, characterized in that: The limiting roller (4) is provided with a plurality of limiting grooves (401) equidistantly along the axial direction for limiting the strip steel, and the strip steel is wound in the limiting grooves (401).

3. A strip steel surface galvanizing device as claimed in claim 1 or 2, characterized in that: A hot air blower (23) is installed on the frame (1), and the hot air blower (23) is electrically connected to the controller (8). Shell covers (20) are installed at both ends of the dust cover (9), and the shell covers (20) are respectively located directly above the first liquid storage tank (13) and the third liquid storage tank (15). A mesh plate (21) for air circulation is provided in the shell cover (20), and the top end of the shell cover (20) is connected to the air outlet of the hot air blower (23) through a corrugated pipe.

4. A strip steel surface galvanizing device as claimed in claim 1, characterized in that: A connecting plate (901) is provided on the top of the dust cover (9), an oil cylinder (22) is hinged on the frame (1), and a piston rod of the oil cylinder (22) is hinged on the connecting plate (901).

5. A strip steel surface galvanizing device as claimed in claim 1, characterized in that: An openable box cover (301) is installed at the top of the liquid storage box (3), a liquid supply pipe (302) and a liquid discharge pipe (303) which are in communication with the interior of the liquid storage box (3) are arranged on the side wall of the liquid storage box (3), both the liquid supply pipe (302) and the liquid discharge pipe (303) are installed with switch valves, and a second liquid level sensor (25) is arranged inside the liquid storage box (3), and the second liquid level sensor (25) is electrically connected to the controller (8).

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