A continuous galvanizing apparatus for galvanizing processing

Abstract

The utility model discloses a continuous galvanization device of galvanization processing, including fixed base, install the heating and dehumidification subassembly of fixed base, link in the downstream of heating and dehumidification subassembly's galvanization tension adjusting component, set up in the downstream of galvanization tension adjusting component's galvanization pot, set up in the downstream of galvanization pot's cooling assembly and link in the downstream of cooling assembly's take up tension adjusting component, heating and dehumidification subassembly are through hot -blast convection, and the material before galvanization is heated uniformly, and the residual water vapor brought from the cleaning end is thoroughly eliminated, prevents the skidding and the water vapor burst when the follow -up into high temperature area produces, galvanization tension adjusting component is used for adjusting material tension before galvanization, cooling assembly is used for carrying out the cooling to the material after galvanization, makes liquid zinc layer solidify fast, forms stable solid plating, take up tension adjusting component is used for adjusting the tension of the material after galvanization before winding.

Description

Technical Field

[0001] This utility model relates to the field of metal material surface treatment technology, specifically to a continuous zinc plating device for zinc plating. Background Technology

[0002] Continuous galvanizing refers to an automated process on a production line where metal materials such as strip steel and wire undergo sequential processes including uncoiling, cleaning, annealing, immersion in a molten zinc bath, air knife thickness control, cooling, and post-treatment before finally being coiled into finished products. This method is highly efficient and produces uniform coatings, making it a core technology for achieving high-efficiency, high-quality galvanized product production.

[0003] The water film adhering to the surface of the material before galvanizing will instantly vaporize when immersed in the high-temperature zinc liquid, causing the zinc liquid to splash violently, threatening operational safety. At the same time, the water vapor forms a vapor barrier on the surface of the steel wire, which hinders the effective wetting and alloying reaction between the zinc liquid and the iron substrate, resulting in fatal defects such as incomplete plating and poor coating adhesion. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a continuous galvanizing device for galvanizing processing, which solves the problems of zinc splashing caused by material entering the zinc pot, resulting in defects such as incomplete galvanizing and poor coating adhesion, as well as the increase of zinc dross, affecting quality and safety.

[0005] The purpose of this utility model is achieved by the following technical solution: a continuous galvanizing device for galvanizing processing, including a fixed base, a heating and dehumidifying component installed on the fixed base, a galvanizing tension regulating component connected downstream of the heating and dehumidifying component, a galvanizing pot set downstream of the galvanizing tension regulating component, a cooling component set downstream of the galvanizing pot, and a winding tension regulating component connected downstream of the cooling component. The heating and dehumidification component uses hot air convection to uniformly heat the material before galvanizing, completely eliminating residual moisture from the cleaning end and preventing slippage and water vapor explosion when entering the high-temperature zone later. The galvanizing tension adjustment assembly is used to adjust the material tension before galvanizing; The cooling component is used to cool the galvanized material, so that the liquid zinc layer can be quickly solidified to form a stable solid coating. The winding tension adjustment assembly is used to adjust the tension of the galvanized material before winding.

[0006] In one optional embodiment, the heating dehumidification assembly includes a flow tank fixedly connected to a fixed base, a pressure equalization chamber disposed on the outer wall of the flow tank, a diversion hole opened between the flow tank and the pressure equalization chamber, an air inlet pipe connected to the outer wall of the pressure equalization chamber, an air outlet pipe connected to the end of the flow tank, and a guide plate fixedly connected to the inner wall of the flow tank.

[0007] In one optional embodiment, the diversion holes are arranged in a ring array between the flow tank and the pressure equalization chamber, and the pressure equalization chamber and the diversion holes are used to ensure that the airflow enters the flow tank evenly.

[0008] In one alternative embodiment, the guide vane is shaped as a spiral to convert a straight airflow into a high-speed spiral wind surrounding the material.

[0009] In one optional embodiment, the galvanizing tension adjustment assembly includes an installation plate connected downstream of the heating and dehumidifying assembly, a fixed roller installed inside the installation plate, a control groove formed on the installation plate, a connecting rod engaged inside the control groove, a movable roller installed on the outer wall of the connecting rod, a spring fixedly connected to the end of the connecting rod, and a limiting rod disposed inside the spring.

[0010] In one alternative embodiment, there are two fixed rollers symmetrical about the vertical centerline of the movable rollers. The movable rollers adjust the pressure on the galvanized material by means of springs and cooperate with the two fixed rollers to adjust the material tension.

[0011] In one alternative embodiment, both the heating and dehumidifying assembly and the cooling assembly have spiral-shaped guide vanes.

[0012] In one alternative implementation, the central openings of the heating and dehumidifying components and the cooling components are located on the same horizontal line.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This device enables uniform and efficient pretreatment of materials. The pressure equalization chamber buffers and redistributes the incoming hot air, ensuring that the airflow entering the flow tank from the annular diversion hole is guided by the guide vanes to evenly coat the entire circumference of the material. This completely eliminates the uneven heating problem inherent in traditional single-point purging. This 360° uniform heating without dead angles can quickly evaporate the surface water film brought in by the cleaning end of the material and bring it to a uniform preheating temperature. This fundamentally prevents the risk of zinc splashing caused by localized dampness or temperature differences. At the same time, it lays a dry, clean, and temperature-uniform foundation for the subsequent galvanizing process, allowing the molten zinc to achieve perfect wetting and alloying, thereby significantly improving the adhesion and uniformity of the coating. Uniformity effectively reduces defects such as incomplete plating and zinc spots, while also reducing flux consumption and zinc dross generation. The galvanized material immediately enters the cooling system, which also employs a cooling air ring based on the pressure equalization chamber principle. This system blows cool air evenly and gently onto the hot plating surface, guiding the zinc layer to solidify according to the ideal crystal structure sequence. This avoids problems such as internal stress concentration, microcracks in the plating, or surface roughness caused by excessively rapid or uneven cooling. Preheating and dehumidification, along with uniform cooling, complement each other, forming a complete, closed-loop thermal management process chain. Ultimately, this ensures that the galvanized steel wire product possesses excellent adhesion, uniform microstructure, a bright appearance, and long-lasting corrosion resistance.

[0014] 2. This device can provide a constant and suitable longitudinal tension for high-speed moving materials through the galvanizing tension adjustment components at both the front and rear ends, as well as the winding tension adjustment components. This not only effectively suppresses the floating, shaking, and deviation of the steel wire in the zinc liquid, ensuring reliable contact with the submerged roller and stabilizing roller, but also provides a foundation for uniform coating for precise thickness control of the air knife. Secondly, tension adjustment is directly related to the safety and efficiency of the production process. Insufficient tension will cause the steel wire to loosen, slip, or even break, resulting in production interruption and scrap; excessive tension may stretch or even break the steel wire under high heat. Precise tension control achieves force balance between the unwinding, process section, and winding, ensuring continuous and high-efficiency production, and significantly reducing the risk of wire breakage and equipment wear. Attached Figure Description

[0015] Figure 1 This is a three-dimensional view of the entire device; Figure 2 This is a schematic diagram of the heating and dehumidification assembly. Figure 3 A cross-sectional structural diagram of the flow tank; Figure 4 This is a schematic diagram of the galvanizing tension adjustment assembly. Figure 5 This is a schematic diagram of the movable roller section.

[0016] In the diagram: 1. Fixed base; 2. Heating and dehumidifying assembly; 201. Flow tank; 202. Pressure equalization chamber; 203. Diverting hole; 204. Air inlet pipe; 205. Air outlet pipe; 206. Guide plate; 3. Galvanizing tension adjustment assembly; 301. Mounting plate; 302. Fixed roller; 303. Control groove; 304. Connecting rod; 305. Movable roller; 306. Spring; 307. Limiting rod; 4. Galvanizing pot; 5. Cooling assembly; 6. Winding tension adjustment assembly. Detailed Implementation

[0017] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. Unless otherwise specified, the materials and equipment used in this embodiment are all commercially available. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0018] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In the description of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0019] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected," "linked," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a connection through an intermediary, the internal connection of two elements, or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0020] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus.

[0021] Please refer to Figure 1-5 A continuous galvanizing apparatus for galvanizing includes a fixed base 1, a heating and dehumidifying component 2 mounted on the fixed base 1, a galvanizing tension regulating component 3 connected downstream of the heating and dehumidifying component 2, a galvanizing pot 4 located downstream of the galvanizing tension regulating component 3, a cooling component 5 located downstream of the galvanizing pot 4, and a winding tension regulating component 6 connected downstream of the cooling component 5. The heating and dehumidifying component 2 uses hot air convection to uniformly heat the material before galvanizing, completely eliminating residual moisture from the cleaning end and preventing slippage and water vapor explosion when entering the high-temperature zone. The galvanizing tension regulating component 3 is used to adjust the tension of the material before galvanizing. The cooling component 5 is used to cool the galvanized material, causing the liquid zinc layer to solidify rapidly and form a stable solid coating. The winding tension regulating component 6 is used to adjust the tension of the galvanized material before winding.

[0022] In a preferred embodiment of this utility model, the heating and dehumidifying assembly 2 includes a flow tank 201 fixedly connected to a fixed base 1, a pressure equalization chamber 202 disposed on the outer wall of the flow tank 201, a diversion hole 203 opened between the flow tank 201 and the pressure equalization chamber 202, an air inlet pipe 204 connected to the outer wall of the pressure equalization chamber 202, an air outlet pipe 205 connected to the end of the flow tank 201, and a guide plate 206 fixedly connected to the inner wall of the flow tank 201. The diversion holes 203 are arranged in a ring array between the flow tank 201 and the pressure equalization chamber 202. The flow divider 202 and flow divider 203 are used to ensure that the airflow enters the flow tank 201 evenly. The guide vane 206 is spiral-shaped to convert the straight airflow into a high-speed spiral wind surrounding the material, achieving uniform and efficient pretreatment of the material. The pressure equalization chamber 202 buffers and redistributes the input hot air, ensuring that the airflow flowing into the flow tank 201 from the annular flow divider 203, guided by the guide vane 206, can evenly wrap around the entire circumference of the material, completely eliminating the problem of uneven surface treatment that exists in traditional single-point purging. This 360° uniform treatment without dead angles... Heating rapidly evaporates the surface water film brought in by the cleaning end of the material, ensuring a uniform preheating temperature throughout. This fundamentally prevents the risk of zinc molten metal splashing due to localized dampness or temperature differences. Simultaneously, it lays a dry, clean, and temperature-uniform foundation for the subsequent galvanizing process, enabling perfect wetting and alloying of the molten zinc. This significantly improves the adhesion and uniformity of the coating, effectively reducing defects such as incomplete plating and zinc spots. It also reduces flux consumption and zinc dross generation. The galvanized material then immediately enters the cooling assembly 5. The cooling component 5 also uses a cooling air ring based on the principle of the equalizing chamber 202 to blow cold air evenly and gently onto the hot coating surface. This guides the zinc layer to solidify in the ideal crystal structure order, avoiding problems such as internal stress concentration, coating micro-cracks, or surface roughness caused by excessively rapid or uneven cooling. Preheating and dehumidification and uniform cooling complement each other, forming a complete and closed-loop thermal management process chain. Ultimately, this ensures that the galvanized steel wire product has excellent adhesion, uniform microstructure, bright appearance, and long-lasting corrosion resistance.

[0023] In a preferred embodiment of this invention, the galvanizing tension adjusting assembly 3 includes an installation plate 301 connected downstream of the heating and dehumidifying assembly 2, a fixed roller 302 installed inside the installation plate 301, a control groove 303 formed on the installation plate 301, a connecting rod 304 engaged inside the control groove 303, a movable roller 305 installed on the outer wall of the connecting rod 304, a spring 306 fixedly connected to the end of the connecting rod 304, and a limiting rod 307 disposed inside the spring 306. There are two fixed rollers 302 vertically symmetrical about the vertical central axis of the movable rollers 305. The movable rollers 305 adjust the pressure on the galvanizing material via the springs 306. The heating and dehumidifying assembly 2 and the cooling assembly 5 work together with two fixed rollers 302 to adjust the material tension. Both have spiral guide vanes 206, and the center openings of the heating and dehumidifying assembly 2 and the cooling assembly 5 are located on the same horizontal line. The galvanizing tension adjusting assembly 3 and the winding tension adjusting assembly 6 at the front and rear ends provide a constant and suitable longitudinal tension for the high-speed moving material. This not only effectively suppresses the floating, shaking and deviation of the steel wire in the zinc liquid, ensuring reliable contact with the submerged roller and the stabilizing roller, but also provides a foundation for the precise thickness control of the air knife and the uniform coating. Secondly, tension adjustment is directly related to the safety and efficiency of the production process. Too little tension will cause the steel wire to loosen, slip or even break, resulting in production interruption and scrap; too much tension may stretch or even break the steel wire in a high-heat environment. Precise tension control realizes the force balance between the unwinding, process section and winding, ensuring the continuity and high efficiency of production, and significantly reducing the risk of wire breakage and equipment wear.

[0024] Working principle: The material to be galvanized from the cleaning end passes through the inside of the flow tank 201. The air inlet pipe 204 is connected to an external hot air power source. Hot air flows from the air inlet pipe 204 into the pressure equalization chamber 202, where it is buffered. It then enters the flow tank 201 evenly through the diversion hole 203. The airflow moves in a spiral shape along the guide plate 206. Guided by the inclined surface of the guide plate 206, the airflow changes from linear motion to high-speed rotating spiral motion, thus forming a vortex that closely adheres to the surface of the material and continuously sweeps away the moisture on the surface of the steel wire. Finally, the hot air flows away from the end of the flow tank 201 and the air outlet pipe 205, thus continuously drying the galvanized material. At the same time, the hot air also raises the surface temperature of the material. The dried material re-enters the galvanizing tension adjustment component 3, first passing the lower edge of the first fixed roller 302, and... The material turns again to the upper edge of the movable roller 305, and then passes the lower edge of the second fixed roller 302 before entering the galvanizing pot 4 for galvanizing. At this time, the material is pressed on the movable roller 305. When the tension of the material is high, it will press down on the movable roller 305. At the same time, the spring 306 exerts an upward force on the movable roller 305, which can offset part of the tension. When the tension of the material is low, the upward force exerted by the spring 306 on the movable roller 305 also pushes the material upward at the movable roller 305, making it tighter and also playing a role in adjusting the tension. After the material is galvanized in the galvanizing pot 4, it passes through the cooling component 5 and the winding tension adjustment component 6 in sequence, in the same way as before galvanizing when it passes through the heating and dehumidifying component 2 and the galvanizing tension adjustment component 3. However, the cooling component 5 is swept with cold air, the purpose of which is to cool and dry the galvanized liquid on the surface of the material. The winding tension adjustment component 6 is for better winding.

[0025] Although only certain components and embodiments of this application have been illustrated and described, many modifications and alterations will be apparent to those skilled in the art without actually departing from the scope and spirit of the claims, such as variations in the size, dimensions, structure, shape and proportion of the various elements, installation arrangement, material use, color, orientation, etc.

[0026] Finally, it should be noted that the above embodiments are only preferred embodiments of this utility model and should not be used to limit the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A continuous galvanizing apparatus for galvanizing processing, characterized in that: It includes a fixed base (1), a heating and dehumidifying assembly (2) installed on the fixed base (1), a galvanizing tension regulating assembly (3) connected downstream of the heating and dehumidifying assembly (2), a galvanizing pot (4) set downstream of the galvanizing tension regulating assembly (3), a cooling assembly (5) set downstream of the galvanizing pot (4), and a winding tension regulating assembly (6) connected downstream of the cooling assembly (5). The heating and dehumidification component (2) heats the material before galvanizing evenly through hot air convection; The galvanizing tension adjustment assembly (3) is used to adjust the material tension before galvanizing; The cooling assembly (5) is used to cool the galvanized material; The winding tension adjustment component (6) is used to adjust the tension of the galvanized material before winding.

2. The continuous galvanizing apparatus for galvanizing according to claim 1, characterized in that, The heating and dehumidification assembly (2) includes a flow tank (201) fixedly connected to a fixed base (1), a pressure equalization chamber (202) provided on the outer wall of the flow tank (201), a diversion hole (203) opened between the flow tank (201) and the pressure equalization chamber (202), an air inlet pipe (204) connected to the outer wall of the pressure equalization chamber (202), an air outlet pipe (205) connected to the end of the flow tank (201), and a guide plate (206) fixedly connected to the inner wall of the flow tank (201).

3. The continuous galvanizing apparatus for galvanizing according to claim 2, characterized in that, The flow dividers (203) are arranged in a ring array between the flow barrel (201) and the pressure equalization chamber (202). The pressure equalization chamber (202) and the flow dividers (203) are used to make the airflow enter the flow barrel (201) evenly.

4. The continuous galvanizing apparatus for galvanizing according to claim 2, characterized in that, The guide vane (206) is shaped like a spiral to convert straight airflow into a high-speed spiral wind that surrounds the material.

5. A continuous galvanizing apparatus for galvanizing according to claim 1, characterized in that, The galvanizing tension adjustment assembly (3) includes an installation plate (301) connected downstream of the heating and dehumidifying assembly (2), a fixed roller (302) installed inside the installation plate (301), a control groove (303) opened on the installation plate (301), a connecting rod (304) engaged inside the control groove (303), a movable roller (305) installed on the outer wall of the connecting rod (304), a spring (306) fixedly connected to the end of the connecting rod (304), and a limiting rod (307) provided inside the spring (306).

6. The continuous galvanizing apparatus for galvanizing according to claim 5, characterized in that, There are two fixed rollers (302) that are symmetrical about the vertical centerline of the movable roller (305). The movable roller (305) adjusts the pressure on the galvanized material by means of a spring (306) and cooperates with the two fixed rollers (302) to adjust the material tension.

7. A continuous galvanizing apparatus for galvanizing according to claim 5, characterized in that, Both the heating and dehumidifying component (2) and the cooling component (5) have spiral guide vanes (206).

8. A continuous galvanizing apparatus for galvanizing according to claim 5, characterized in that, The central openings of the heating and dehumidifying component (2) and the cooling component (5) are located on the same horizontal line.

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