Continuous passivation pretreatment device for fluorocarbon color-coated aluminum coil

Abstract

The utility model relates to a continuous passivation pretreatment device for a fluorocarbon color-coated aluminum coil, which is applied to the field of fluorocarbon color-coated aluminum coil production and processing and comprises a treatment box, a plurality of mounting rods are fixedly connected to an inner cavity of the treatment box, auxiliary rollers are rotatably sleeved on the outer surfaces of the mounting rods, and water outlet pipes are fixedly connected to the left end and the right end of the treatment box. Movable notches are formed in the left end and the right end of the treatment box correspondingly, a partition plate is fixedly connected to the inner bottom wall of the treatment box, and a U-shaped mounting frame is fixedly connected to the left end of the partition plate, and when the color-coated aluminum coil is subjected to passivation treatment, an air knife is arranged to blow the washed color-coated aluminum coil, so that water and a small amount of impurities on the surface of the color-coated aluminum coil are blown off; and then the color-coated aluminum coil is dried and rapidly heated through the multiple infrared radiators, so that water on the surface of the color-coated aluminum coil is greatly reduced, the situation that a large amount of water is brought into a passivation solution by the washed color-coated aluminum coil is effectively avoided, and then the passivation uniformity is effectively improved.

Description

Technical Field

[0001] This utility model relates to a passivation pretreatment device, and more particularly to a continuous passivation pretreatment device for fluorocarbon color-coated aluminum coils applied in the production and processing of fluorocarbon color-coated aluminum coils. Background Technology

[0002] Fluorocarbon coatings are commonly used for metal surface treatment, such as aluminum coils, for building exterior walls, because of their good weather resistance. The production process includes pretreatment, coating, and curing steps. To enhance the corrosion resistance of fluorocarbon-coated aluminum coils, improve coating adhesion, and extend service life, they need to be passivated by a pretreatment device.

[0003] The specification of Chinese Patent Publication No. CN211284541U discloses a copper foil surface passivation treatment device. As the amount of copper foil increases, the passivation liquid is gradually consumed. When the switch is turned on and the open contact is in contact, the valve on the surface of the liquid inlet pipe opens and discharges the passivation liquid into the treatment tank. When the close contact is turned off and the close switch is in contact, the valve on the surface of the liquid inlet pipe closes, realizing the function of automatically adding passivation liquid and ensuring that the passivation liquid in the treatment tank is always in contact with the top and bottom surfaces of the copper foil.

[0004] However, the above-mentioned patent still has the following problems in actual application: Before immersing the color-coated aluminum coil into the passivation solution, the aluminum coil needs to be washed with water to remove dust and impurities on its surface, so as to facilitate uniform passivation in the later stage. However, after washing, a large amount of water will remain on the surface of the color-coated aluminum coil. As the color-coated aluminum coil moves, the water will be directly carried into the passivation solution. Long-term accumulation will cause the passivation solution to be diluted and the concentration to gradually decrease, thereby affecting the uniformity of the passivation film. Utility Model Content

[0005] The technical problem to be solved by this utility model is that after the color-coated aluminum coil is washed with water, a large amount of water will remain on its surface. As the color-coated aluminum coil moves, the water will be directly carried into the passivation solution. Long-term accumulation will cause the passivation solution to be diluted and the concentration to gradually decrease, thereby affecting the uniformity of the passivation film.

[0006] To address the aforementioned problems, this utility model provides a continuous passivation pretreatment device for fluorocarbon-coated aluminum coils, comprising a treatment box, with multiple mounting rods fixedly connected to the inner cavity of the treatment box, auxiliary rollers rotatably mounted on the outer surface of the mounting rods, water outlet pipes fixedly connected to both ends of the treatment box, and movable slots chiseled at both ends of the treatment box, a partition fixedly connected to the inner bottom wall of the treatment box, a U-shaped mounting frame fixedly connected to the left end of the partition, two mounting plates and two mounting seats fixedly connected to the left and right inner walls of the mounting frame, an air knife rotatably connected between the two longitudinally opposite mounting plates, a cylinder rotatably connected inside the mounting seat, the end of the cylinder away from the mounting seat being rotatably connected to the air knife, an air inlet pipe at the rear end of the treatment box, two positioning tubes fixedly connected to the outer surface of the air inlet pipe, the front ends of the positioning tubes fixedly penetrating into the treatment box, two telescopic hoses fixedly connected to the outer surface of the positioning tubes, the ends of the telescopic hoses away from the positioning tubes being fixedly connected to the lower end of the air knife, a heating box fixedly connected to the right end of the partition, and multiple infrared radiators fixedly connected to the upper and lower inner walls of the heating box.

[0007] In the aforementioned continuous passivation pretreatment device for fluorocarbon color-coated aluminum coils, during the passivation treatment of the color-coated aluminum coils, an air knife is used to blow away the water and a small amount of impurities from the surface of the color-coated aluminum coils after washing. Then, multiple infrared radiators are used to dry and heat the color-coated aluminum coils rapidly, which greatly reduces the surface moisture and effectively prevents the color-coated aluminum coils after washing from carrying a large amount of water into the passivation solution, thereby effectively improving the uniformity of passivation.

[0008] As a further improvement to this application, one of the mounting rods is located inside the mounting frame, and the mounting rods located on both sides of the partition are in a parallel state.

[0009] As a further improvement to this application, both the partition and the right end of the mounting frame are provided with discharge ports, the mounting rod located inside the mounting frame is located directly to the left of the discharge port, and the heating box is located directly to the right of the discharge port.

[0010] As a further improvement of this application, the two air knives are in the shape of an inverted V, the end of the air knife away from the inner wall of the mounting frame is an isosceles trapezoid, and an air outlet is cut at the end of the air knife away from the inner wall of the mounting frame. The distance between the partition and the left inner wall of the treatment box is smaller than the distance between the partition and the right inner wall of the treatment box.

[0011] As another improvement of this application, guide plates are also fixedly connected to the left and right inner walls of the mounting frame. The two guide plates are in the shape of an inverted V and are located below the air knife.

[0012] As another improvement of this application, liquid level sensors are fixedly connected to the left and right inner walls of the processing box, and a liquid detector is fixedly connected to the right end of the processing box. The cylinder, liquid level sensors and liquid detector are all connected to the signal of an external controller.

[0013] In summary, in practical applications, the color-coated aluminum coil is wound around the outer surface of multiple auxiliary rollers, with both ends of the coil movably passing through two movable slots. The left side of the partition contains the washing liquid, and the right side contains the passivation liquid. After the color-coated aluminum coil is washed with the washing liquid, gas enters the air knife through the air inlet pipe, positioning pipe, and telescopic hose. The air knife blows the gas onto the surface of the color-coated aluminum coil, removing most of the moisture and a small amount of impurities. The color-coated aluminum coil passes through the heating box and is irradiated by multiple infrared radiators, which greatly reduces the surface moisture. This effectively prevents the color-coated aluminum coil from carrying a large amount of moisture into the passivation liquid after washing, and effectively prevents the passivation liquid from being diluted by the moisture carried by the color-coated aluminum coil, thereby effectively improving the uniformity of passivation. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the first embodiment of this application;

[0015] Figure 2 This is a cross-sectional view of the processing box structure according to the first embodiment of this application;

[0016] Figure 3 This is a schematic diagram of the partition structure according to the first embodiment of this application;

[0017] Figure 4 This is a schematic diagram of the air knife structure according to the first embodiment of this application;

[0018] Figure 5 This is a schematic diagram of the intake pipe structure according to the first embodiment of this application;

[0019] Figure 6 This is a schematic diagram of the heating box structure according to the first embodiment of this application;

[0020] Figure 7 This is a cross-sectional view of the processing box structure according to the second embodiment of this application.

[0021] Explanation of the labels in the diagram:

[0022] 1. Processing box; 2. Mounting rod; 3. Auxiliary roller; 4. Water outlet pipe; 5. Partition plate; 6. Mounting frame; 7. Mounting plate; 8. Mounting base; 9. Air knife; 10. Cylinder; 11. Air inlet pipe; 12. Positioning pipe; 13. Telescopic hose; 14. Heating box; 15. Infrared radiator; 16. Guide plate; 17. Liquid level sensor; 18. Liquid detector. Detailed Implementation

[0023] The two embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0024] First implementation method:

[0025] Figure 1 and Figure 2The diagram shows a continuous passivation pretreatment device for fluorocarbon-coated aluminum coils, comprising a treatment box 1. Multiple mounting rods 2 are fixedly connected to the inner cavity of the treatment box 1. Auxiliary rollers 3 are rotatably mounted on the outer surface of the mounting rods 2. Water outlet pipes 4 are fixedly connected to both the left and right ends of the treatment box 1, and movable slots are chiseled at both ends of the treatment box 1. The color-coated aluminum coil is wound around the outer surface of the multiple auxiliary rollers 3, and both ends of the color-coated aluminum coil movably pass through the two movable slots. A partition 5 is fixedly connected to the inner bottom wall of the treatment box 1. The left side of the partition 5 contains washing liquid, and the right side contains passivation liquid. After being washed with the washing liquid, the color-coated aluminum coil enters the passivation liquid for passivation treatment. Point A in the diagram represents the color-coated aluminum coil.

[0026] Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6The diagram shows that a U-shaped mounting frame 6 is fixedly connected to the left end of the partition 5, with one mounting rod 2 located inside the mounting frame 6. The mounting rods 2 on both sides of the partition 5 are parallel to each other, facilitating the processing of the color-coated aluminum coil. Both the partition 5 and the mounting frame 6 have discharge ports on their right ends. The mounting rod 2 inside the mounting frame 6 is located directly to the left of the discharge port, and the heating box 14 is located directly to the right of the discharge port, allowing the color-coated aluminum coil to pass through the heating box 14. Two mounting plates 7 and two mounting seats 8 are fixedly connected to the left and right inner walls of the mounting frame 6. Air knives 9 are rotatably connected between two opposing mounting plates 7. The two air knives 9 are in an inverted V-shape. The end of each air knife 9 furthest from the inner wall of the mounting frame 6 is an isosceles trapezoid, and an air outlet is cut into this end. The distance between the partition plate 5 and the left inner wall of the treatment box 1 is less than the distance between the partition plate 5 and the right inner wall of the treatment box 1. A cylinder 10 is rotatably connected inside the mounting base 8. Those skilled in the art can select a suitable model of cylinder 10 according to actual needs, such as SCD50x100-100-LB. The end of cylinder 10 furthest from mounting base 8 is rotatably connected to air knife 9. If the angle of air knife 9 needs adjustment, cylinder 10 can be activated to extend or retract, thereby changing the angle of air knife 9 to facilitate blowing on the surface of color-coated aluminum coils. An air inlet pipe 11 is located at the rear end of the processing box 1. The left end of the air inlet pipe 11 is connected to an air source. Two positioning pipes 12 are fixedly connected to the outer surface of the air inlet pipe 11. The front ends of the positioning pipes 12 are fixedly inserted into the processing box 1. The right-side positioning pipe 12 is located on the right side of partition 5. Two telescopic hoses 13 are fixedly connected to the outer surface of the positioning pipe 12. The telescopic hoses 13 movably pass through mounting frame 6, and the right-side telescopic hose also movably passes through partition 5. The telescopic hoses 13 facilitate the rotation of air knife 9. The end of the telescopic hose 13 furthest from the positioning pipes 12 is fixedly connected to the lower end of air knife 9. A heating box 14 is fixedly connected to the right end of partition 5. Multiple infrared radiators 15 are fixedly connected to the upper and lower inner walls of the heating box 14. Those skilled in the art can select appropriate models of infrared radiators 15 according to actual needs, such as QIL. The T-SW and T-FMW technologies use multiple infrared radiators 15 to heat and quickly dry the surface of color-coated aluminum coils, thereby greatly reducing the moisture content on the surface of the color-coated aluminum coils.

[0027] The color-coated aluminum coil is wound around the outer surface of multiple auxiliary rollers 3, and the two ends of the color-coated aluminum coil move through two movable slots. The left side of the partition 5 contains washing liquid, and the right side of the partition 5 contains passivation liquid. After the color-coated aluminum coil is washed with the washing liquid, gas enters the air knife 9 through the air inlet pipe 11, positioning pipe 12 and telescopic hose 13. The gas is blown onto the surface of the color-coated aluminum coil by the air knife 9, blowing off most of the moisture and a small amount of impurities on its surface. The color-coated aluminum coil passes through the heating box 14 and is irradiated by multiple infrared radiators 15, thereby greatly reducing the surface moisture. This effectively prevents the color-coated aluminum coil from carrying a large amount of moisture into the passivation liquid after washing, and effectively prevents the passivation liquid from being diluted by the moisture carried by the color-coated aluminum coil, thereby effectively improving the uniformity of passivation.

[0028] Second implementation method:

[0029] This embodiment adds a flow guide plate 16, a liquid level sensor 17, and a liquid detector 18 to the first embodiment, while the rest remains the same as the first embodiment.

[0030] Figure 7 As shown: Guide plates 16 are fixedly connected to the left and right inner walls of the mounting frame 6. The two guide plates 16 are in an inverted V-shape and are located below the air knife 9. Liquid level sensors 17 are fixedly connected to the left and right inner walls of the processing box 1. Those skilled in the art can select a suitable model of liquid level sensor 17 according to actual needs, such as HQ-UQZ. A liquid detector 18 is fixedly connected to the right end of the processing box 1. Those skilled in the art can select a suitable model of liquid detector 18 according to actual needs, such as JH550I. The cylinder 10, liquid level sensor 17, and liquid detector 18 are all connected to an external controller. Those skilled in the art can select a suitable model of controller according to actual needs, such as OHR-B300A-A.

[0031] After the air knife 9 blows away the moisture on the surface of the color-coated aluminum coil, the moisture falls onto the surface of the guide plate 16 and flows into the washing liquid along the surface of the guide plate 16, thus effectively preventing the blown-off water droplets from splashing. At the same time, the concentration of the passivation liquid can be monitored by the liquid detector 18, and the liquid levels of the washing liquid and passivation liquid can be monitored in real time by two liquid level sensors 17, so that the staff can replenish them in time.

[0032] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. A continuous passivation pretreatment device for fluorocarbon color-coated aluminum coils, comprising a treatment box (1), characterized in that: The inner cavity of the treatment box (1) is fixedly connected with multiple mounting rods (2), and the outer surface of the mounting rods (2) is rotatably fitted with auxiliary rollers (3). Both the left and right ends of the treatment box (1) are fixedly connected with water outlet pipes (4), and both the left and right ends of the treatment box (1) are chiseled with movable slots. The inner bottom wall of the treatment box (1) is fixedly connected with partitions (5). A U-shaped mounting frame (6) is fixedly connected to the left end of the partition (5). Two mounting plates (7) and two mounting seats (8) are fixedly connected to the left and right inner walls of the mounting frame (6). An air knife (9) is rotatably connected between the two longitudinally opposite mounting plates (7). A cylinder (10) is rotatably connected inside the mounting seat (8). The end of the cylinder (10) away from the mounting seat (8) is rotatably connected to the air knife (9). An air inlet pipe (11) is provided at the rear end of the processing box (1). (11) has two positioning tubes (12) fixedly connected to its outer surface. The front end of the positioning tube (12) is fixedly inserted into the processing box (1). Two telescopic hoses (13) are fixedly connected to the outer surface of the positioning tube (12). The end of the telescopic hose (13) away from the positioning tube (12) is fixedly connected to the lower end of the air knife (9). The right end of the partition (5) is fixedly connected to the heating box (14). Multiple infrared radiators (15) are fixedly connected to the upper and lower inner walls of the heating box (14).

2. The continuous passivation pretreatment device for fluorocarbon color-coated aluminum coils according to claim 1, characterized in that: One of the mounting rods (2) is located inside the mounting frame (6), and the mounting rods (2) located on both sides of the partition (5) are in a parallel state.

3. The continuous passivation pretreatment device for fluorocarbon color-coated aluminum coils according to claim 2, characterized in that: Both the partition (5) and the mounting frame (6) have discharge ports on their right ends. The mounting rod (2) located inside the mounting frame (6) is located on the left side of the discharge port, and the heating box (14) is located on the right side of the discharge port.

4. The continuous passivation pretreatment device for fluorocarbon color-coated aluminum coils according to claim 1, characterized in that: The two air knives (9) are in the shape of an inverted V. The end of the air knife (9) away from the inner wall of the mounting frame (6) is an isosceles trapezoid, and the end of the air knife (9) away from the inner wall of the mounting frame (6) has an air outlet. The distance between the partition (5) and the left inner wall of the treatment box (1) is smaller than the distance between the partition (5) and the right inner wall of the treatment box (1).

5. A continuous passivation pretreatment device for fluorocarbon color-coated aluminum coils according to claim 1, characterized in that: The two inner walls of the mounting frame (6) are also fixedly connected with guide plates (16). The two guide plates (16) are in the shape of an inverted V and are located below the air knife (9).

6. The continuous passivation pretreatment device for fluorocarbon color-coated aluminum coils according to claim 1, characterized in that: Liquid level sensors (17) are fixedly connected to the left and right inner walls of the processing box (1), and a liquid detector (18) is fixedly connected to the right end of the processing box (1). The cylinder (10), liquid level sensor (17) and liquid detector (18) are all connected to the signal of an external controller.

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