A galvanizing drying device for cold-rolled sheet

Abstract

The utility model relates to cold rolled plate processing technical field provides a kind of cold rolled plate surface zinc plating drying device, including shell and positioning assembly;Shell includes zinc plating pool and cover and is set on the heat preservation cover of zinc plating pool, and zinc plating pool bottom is connected with liquid outlet pipe, and zinc plating pool is installed with side blast box and bottom blast box, and side blast box side wall is equipped with nozzle, and bottom blast box top is provided with spray hole;Positioning assembly includes mounting bracket, positioning channel and first limit pad, and mounting bracket is fixed in zinc plating pool and is erected in bottom blast box top, and positioning channel is arranged on mounting bracket, and one end of positioning channel is connected on the side wall of side blast box, and nozzle is towards positioning channel, and spray hole is located in the bottom of positioning channel, and first limit pad is engaged in positioning channel;The utility model solves the problem that single-sided heating easily affects the surface quality of zinc-coated sheet, and has the advantages of simple structure and low manufacturing cost.

Description

Technical Field

[0001] This utility model relates to the field of cold-rolled sheet processing technology, and more specifically, to a galvanizing and drying device for the surface of cold-rolled sheets. Background Technology

[0002] Galvanizing the surface of cold-rolled steel sheets is an important process to improve the corrosion resistance and aesthetics of the steel sheets, and the drying process after galvanizing directly affects the coating quality and product performance.

[0003] In the prior art, such as the drying device for galvanized sheet disclosed in CN215676294U, the device includes a fixed platform, a drying mechanism, and a vibration mechanism. The drying mechanism includes a drying chamber, a drive motor installed on one side of the drying chamber, a drive half gear installed on the output end of the drive motor, and a lifting groove opened on the outer surface of the drying mechanism. The vibration mechanism includes a sliding rack, a first connecting plate and a second connecting plate installed on one side of the sliding rack, a rotating shaft installed on one side of the first connecting plate and the second connecting plate, and a first transmission roller and a second transmission roller installed on one side of the rotating shaft. During the use of the above-mentioned drying device, a large amount of heat will be dissipated, resulting in low heat utilization and waste of resources. Moreover, the drying device only uses single-sided heating, and the heat needs to penetrate the entire thickness of the galvanized sheet to reach the back side, resulting in excessively high temperature on the galvanized surface and insufficient temperature on the back side. This may lead to local oxidation or excessive sintering of the zinc layer, thereby affecting the surface quality of the galvanized sheet. Utility Model Content

[0004] Therefore, in order to solve the problem that single-sided heating can easily affect the surface quality of galvanized sheets, this utility model provides a galvanizing drying device for cold-rolled sheets, the specific technical solution of which is as follows: A galvanizing and drying device for cold-rolled steel sheets includes a housing and a positioning assembly. The housing includes a galvanizing tank and an insulation cover over the galvanizing tank. A liquid outlet pipe is connected to the bottom of the galvanizing tank. A side air box and a bottom air box are installed inside the galvanizing tank. A nozzle is provided on the side wall of the side air box, and a spray hole is opened on the top of the bottom air box. The positioning assembly includes a mounting frame, a positioning channel, and a first limiting pad. The mounting frame is fixed inside the galvanizing tank and erected on the top of the bottom air box. The positioning channel is disposed on the mounting frame. One end of the positioning channel is connected to the side wall of the side air box. The nozzle faces into the positioning channel, the spray hole is located at the bottom of the positioning channel, and the first limiting pad is engaged within the positioning channel.

[0005] The aforementioned galvanizing and drying device for cold-rolled steel sheets features a galvanizing bath where a dense zinc layer is formed on the surface of the cold-rolled steel sheet by immersion in galvanizing liquid, providing an ideal substrate for subsequent processing. The process parameters directly affect the coating quality and product performance. An outlet pipe allows the galvanizing liquid to be discharged after galvanizing, facilitating subsequent drying. An insulation cover, covering the surface of the galvanizing bath, prevents heat loss through radiation and convection, reducing energy consumption and avoiding temperature fluctuations that could affect product quality. Side and bottom air boxes provide hot air drying from two directions, solving the problem of single-sided heating affecting the surface quality of the galvanized sheet. Positioning channels and a first limiting pad facilitate the positioning and fixing of the cold-rolled steel sheet.

[0006] Furthermore, the housing also includes a base, which is disposed at the bottom of the galvanizing tank and used to support and fix the galvanizing tank. The outlet pipe passes through the base and extends to the bottom of the base, and a valve is provided inside the outlet pipe.

[0007] Furthermore, snap-fit ​​plates are connected to both sides of the top of the galvanizing tank, and reinforcing beams are protruding from the outer sidewall of the galvanizing tank.

[0008] Furthermore, a first air inlet pipe and a second air inlet pipe are respectively connected to the side air box and the bottom air box. One end of the first air inlet pipe passes through the snap-fit ​​plate on one side and extends to the outside of the housing. The second air inlet pipe is disposed between the bottom of the mounting bracket and the top of the base. One end of the second air inlet pipe passes through the galvanizing tank and extends to the outside of the galvanizing tank. Both the first air inlet pipe and the second air inlet pipe are connected to an external hot air blower.

[0009] Furthermore, the heat insulation cover includes a movable door, a reinforcing plate, and a cover body covering the galvanizing tank. The cover body has an opening, the movable door is slidably mounted on the cover body and used to seal the opening, the reinforcing plate is installed at the bottom of the cover body and is detachably connected to the reinforcing beam, and the cover body is provided with a heat insulation layer.

[0010] Furthermore, a guide rail is installed on the inner wall of the reinforcing plate; a track wheel adapted to the guide rail is provided at the bottom of the movable door, and the track wheel is slidably connected to the guide rail.

[0011] Furthermore, the movable door is equipped with an observation window and a handle, and the observation window is fitted with heat-insulating glass.

[0012] Furthermore, the positioning assembly also includes a first positioning plate and a support platform mounted on the mounting frame. A first slot is connected between the first positioning plate and the side wall of the side air box, and a second slot is connected between the first positioning plate and the support platform. The first limiting pad is engaged with the first positioning plate, and the first slot, the first positioning plate, the second slot, and the support platform cooperate to form the positioning channel.

[0013] Furthermore, there are multiple positioning channels, nozzles, and spray holes, with each positioning channel corresponding to at least one nozzle and one spray hole.

[0014] Furthermore, the positioning component also includes a second positioning plate, which is mounted on the mounting bracket. The second positioning plate is engaged with a second limiting pad. The number of the first limiting pad and the number of the second limiting pad are both multiple, and they correspond one-to-one. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a galvanizing and drying device for cold-rolled steel sheet according to an embodiment of the present invention; Figure 2 This is one of the partial structural schematic diagrams of the galvanizing and drying device for cold-rolled steel sheet according to an embodiment of this utility model; Figure 3 This is a second partial structural schematic diagram of the galvanizing and drying device for cold-rolled steel sheet according to an embodiment of this utility model; Figure 4 This is a schematic diagram of the structure of the heat insulation cover of the cold-rolled steel plate surface galvanizing drying device according to an embodiment of the present invention.

[0016] Explanation of reference numerals in the attached figures: 1. Galvanizing tank; 11. Discharge pipe; 12. Clip plate; 13. Reinforcing beam; 2. Insulation cover; 21. Sliding door; 211. Observation window; 212. Handle; 22. Reinforcing plate; 23. Cover body; 3. Side air box; 31. Nozzle; 32. First air inlet pipe; 4. Bottom air box; 41. Second air inlet pipe; 5. Mounting bracket; 6. Positioning groove; 61. First partition groove; 62. First positioning plate; 63. Second partition groove; 64. Support platform; 65. Second positioning plate; 7. First limiting pad; 8. Base; 9. Second limiting pad. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with its embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and do not limit its scope of protection.

[0018] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0020] In this utility model, "first" and "second" do not represent a specific quantity or order, but are merely used to distinguish names.

[0021] like Figures 1-4 As shown, a galvanizing and drying device for cold-rolled steel sheet in one embodiment of the present invention includes a housing and a positioning assembly. The housing includes a galvanizing tank 1 and an insulation cover 2 covering the galvanizing tank 1. The bottom of the galvanizing tank 1 is connected to an outlet pipe 11. A side air box 3 and a bottom air box 4 are installed inside the galvanizing tank 1. The side air box 3 is provided with a nozzle 31 on its side wall, and the bottom air box 4 is provided with a spray hole at its top. The positioning assembly includes a mounting frame 5, a positioning channel 6, and a first limiting pad 7. The mounting frame 5 is fixed inside the galvanizing tank 1 and mounted on the top of the bottom air box 4. The positioning channel 6 is provided on the mounting frame 5. One end of the positioning channel 6 is connected to the side wall of the side air box 3. The nozzle 31 faces into the positioning channel 6, and the spray hole is located at the bottom of the positioning channel 6. The first limiting pad 7 is engaged in the positioning channel 6.

[0022] The aforementioned galvanizing and drying device for cold-rolled steel sheets includes a galvanizing tank 1, which immerses the cold-rolled steel sheet in galvanizing liquid to form a dense zinc layer, providing an ideal substrate for subsequent processing. The process parameters directly affect the coating quality and product performance. An outlet pipe 11 is provided to drain the galvanizing liquid after galvanizing, facilitating subsequent drying. An insulation cover 2, covering the surface of the galvanizing tank 1, prevents heat loss through radiation and convection, reducing energy consumption and avoiding temperature fluctuations that could affect product quality. Side air boxes 3 and bottom air boxes 4 provide hot air drying from two directions, solving the problem of single-sided heating affecting the surface quality of the galvanized sheet. A positioning channel 6 and a first limiting pad 7 facilitate the positioning and fixing of the cold-rolled steel sheet.

[0023] Preferably, the zinc plating solution is an electroplating solution or a hot-dip galvanizing solution. Electroplating or hot-dip galvanizing is existing technology in the galvanizing process of cold-rolled steel sheets and will not be elaborated upon further.

[0024] like Figure 1 As shown, in one embodiment, the housing also includes a base 8, which is disposed at the bottom of the galvanizing bath 1 and used to support and fix the galvanizing bath 1. An outlet pipe 11 passes through the base 8 and extends to the bottom of the base 8. A valve is provided inside the outlet pipe 11. The valve controls the discharge process of the galvanizing solution, ensuring the safe and efficient operation of the system and facilitating the continuous galvanizing and drying operations in the galvanizing bath 1.

[0025] like Figure 2 and Figure 3 As shown, in one embodiment, snap-fit ​​plates 12 are connected to both sides of the top of the galvanizing tank 1, and reinforcing beams 13 are protruding from the outer sidewall of the galvanizing tank 1.

[0026] like Figures 1-3 As shown, in one embodiment, a first air inlet pipe 32 and a second air inlet pipe 41 are respectively connected to the side air box 3 and the bottom air box 4. One end of the first air inlet pipe 32 passes through the snap-fit ​​plate 12 on one side and extends to the outside of the housing. The second air inlet pipe 41 is located between the bottom of the mounting bracket 5 and the top of the base 8. One end of the second air inlet pipe 41 passes through the galvanizing tank 1 and extends to the outside of the galvanizing tank 1. Both the first air inlet pipe 32 and the second air inlet pipe 41 are connected to an external hot air blower. The hot air blower efficiently generates hot air through electric heating or air source heat pump technology. The hot air circulates to the first air inlet pipe 32 and the second air inlet pipe 41, and is finally sprayed out through the nozzle 31 and spray hole to realize the drying operation of the galvanized cold-rolled plate.

[0027] like Figure 1 and Figure 4 As shown, in one embodiment, the insulation cover 2 includes a movable door 21, a reinforcing plate 22, and a cover body 23 covering the galvanizing tank 1. The cover body 23 has an opening, the movable door 21 is slidably mounted on the cover body 23 and used to seal the opening, the reinforcing plate 22 is installed at the bottom of the cover body 23 and is detachably connected to the reinforcing beam 13, and an insulation layer is provided inside the cover body 23. Thus, by providing the movable door 21, the feeding and unloading of cold-rolled steel sheets and the sealing during the processing are facilitated; by providing the insulation layer, the insulation layer can isolate the internal temperature from the external temperature of the shell, effectively reducing temperature loss.

[0028] Preferably, the thermal insulation layer is made of polystyrene board.

[0029] In one embodiment, a guide rail is installed on the inner wall of the reinforcing plate 22; the bottom of the sliding door 21 is provided with track wheels adapted to the guide rail, and the track wheels are slidably connected to the guide rail. The resistance of rolling friction is much less than that of sliding friction, thus making the sliding door 21 move more smoothly.

[0030] Specifically, the guide rail is set in a horizontal direction.

[0031] like Figure 1 and Figure 4 As shown, in one embodiment, the sliding door 21 is provided with an observation window 211 and a handle 212, and the observation window 211 is provided with heat-insulating glass. The heat-insulating glass can absorb a large amount of infrared rays, effectively blocking heat transfer and preventing the high temperature inside the housing from affecting the operator's work.

[0032] like Figure 2 and Figure 3 As shown, in one embodiment, the positioning assembly further includes a first positioning plate 62 and a support platform 64 mounted on the mounting frame 5. A first partition groove 61 is connected between the first positioning plate 62 and the side wall of the side air box 3, and a second partition groove 63 is connected between the first positioning plate 62 and the support platform 64. A first limiting pad 7 is engaged with the first positioning plate 62. The first partition groove 61, the first positioning plate 62, the second partition groove 63 and the support platform 64 cooperate to form a positioning channel 6.

[0033] In one embodiment, there are multiple positioning channels 6, nozzles 31, and spray holes, with each positioning channel 6 corresponding to at least one nozzle 31 and one spray hole. This allows for the simultaneous processing of multiple sets of cold-rolled sheets, which improves processing efficiency and reduces processing costs.

[0034] like Figure 3 As shown, in one embodiment, the positioning component further includes a second positioning plate 65, which is mounted on the mounting frame 5. A second limiting pad 9 is engaged with the second positioning plate 65. Both the number of first limiting pads 7 and the number of second limiting pads 9 are multiple, and they correspond one-to-one. By providing the first limiting pads 7 and the second limiting pads 9, the movement range or position of the cold-rolled sheet is limited, preventing excessive displacement or slippage of the cold-rolled sheet, while also providing cushioning, shock absorption, and sealing functions.

[0035] Specifically, the structure of the first limiting pad 7 is the same as that of the second limiting pad 9, and both are U-shaped.

[0036] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0037] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A drying device for galvanizing the surface of cold-rolled steel sheet, characterized in that, include: The shell includes a galvanizing tank and an insulation cover covering the galvanizing tank. The bottom of the galvanizing tank is connected to an outlet pipe. A side air box and a bottom air box are installed inside the galvanizing tank. The side air box is provided with nozzles on its side wall and the bottom air box is provided with spray holes on its top. The positioning assembly includes a mounting frame, a positioning channel, and a first limiting pad. The mounting frame is fixed inside the galvanizing tank and erected on the top of the bottom air box. The positioning channel is disposed on the mounting frame, one end of which is connected to the side wall of the side air box. The nozzle faces into the positioning channel, and the spray hole is located at the bottom of the positioning channel. The first limiting pad is engaged within the positioning channel.

2. The galvanizing and drying apparatus for cold-rolled steel sheet according to claim 1, characterized in that, The housing also includes a base, which is disposed at the bottom of the galvanizing tank and used to support and fix the galvanizing tank. The outlet pipe passes through the base and extends to the bottom of the base, and a valve is provided inside the outlet pipe.

3. The galvanizing and drying apparatus for cold-rolled steel sheet according to claim 2, characterized in that, The top two sides of the galvanizing tank are connected with snap-fit ​​plates, and the outer sidewall of the galvanizing tank is provided with reinforcing beams.

4. The cold-rolled sheet surface galvanizing drying apparatus according to claim 3, characterized in that, The side air box and the bottom air box are respectively connected to a first air inlet pipe and a second air inlet pipe. One end of the first air inlet pipe passes through the snap-fit ​​plate on one side and extends to the outside of the housing. The second air inlet pipe is located between the bottom of the mounting bracket and the top of the base. One end of the second air inlet pipe passes through the galvanizing tank and extends to the outside of the galvanizing tank. Both the first air inlet pipe and the second air inlet pipe are connected to an external hot air blower.

5. The galvanizing and drying apparatus for cold-rolled steel sheet according to claim 3, characterized in that, The heat insulation cover includes a movable door, a reinforcing plate, and a cover body covering the galvanizing tank. The cover body has an opening. The movable door is slidably mounted on the cover body and is used to seal the opening. The reinforcing plate is installed at the bottom of the cover body and is detachably connected to the reinforcing beam. The cover body is provided with a heat insulation layer.

6. The galvanizing and drying apparatus for cold-rolled steel sheet according to claim 5, characterized in that, The inner wall of the reinforcing plate is equipped with a guide rail; the bottom of the movable door is provided with a track wheel that is adapted to the guide rail, and the track wheel is slidably connected to the guide rail.

7. The galvanizing and drying apparatus for cold-rolled steel sheet according to claim 5, characterized in that, The movable door is equipped with an observation window and a handle, and the observation window is fitted with heat-insulating glass.

8. The galvanizing and drying apparatus for cold-rolled steel sheet according to claim 1, characterized in that, The positioning assembly further includes a first positioning plate and a support platform mounted on the mounting frame. A first slot is connected between the first positioning plate and the side wall of the side air box, and a second slot is connected between the first positioning plate and the support platform. The first limiting pad is engaged with the first positioning plate, and the first slot, the first positioning plate, the second slot, and the support platform cooperate to form the positioning channel.

9. The galvanizing and drying apparatus for cold-rolled steel sheet according to claim 1, characterized in that, The number of positioning channels, nozzles and spray holes are all multiple, and each positioning channel corresponds to at least one nozzle and one spray hole.

10. The cold-rolled sheet surface galvanizing drying apparatus according to claim 8, characterized in that, The positioning component further includes a second positioning plate, which is mounted on the mounting frame. The second positioning plate is engaged with a second limiting pad. There are multiple first limiting pads and multiple second limiting pads, and they correspond one-to-one.

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