Aluminum coil continuous oxidation production line

Abstract

The utility model discloses an aluminum coil continuous oxidation production line which is characterized in that an aluminum coil sequentially penetrates through six reaction assemblies and six water washing assemblies which are alternately arranged, and the six reaction assemblies are sequentially a degreasing assembly, an alkali washing assembly, a neutralizing assembly, an anodic oxidation assembly, a dyeing assembly and a sealing assembly; each reaction assembly comprises a box body, a first guide roller, an upper spraying device and a lower stirring device, and the box body is filled with corresponding reaction liquid; the first guide roller is rotatably arranged in the box body, and an aluminum coil enters from one side of the top of the box body, is guided by the first guide roller and then is led out from the other side of the box body; the upper spraying device and the lower stirring device are arranged on the upper side and the lower side of an aluminum coil respectively, and the first guide roller is connected with the driving end of the lower stirring device through a transmission structure. Wherein an adding device is arranged in the alkali washing assembly and used for automatically adding reaction liquid according to the concentration of the solution in the box body, and through cooperation of multiple aspects, the uniformity of an aluminum coil oxide layer can be guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aluminum coil production, and particularly relates to a continuous oxidation production line for aluminum coils. BACKGROUND

[0002] In the surface treatment process of aluminum coils, oxidation treatment is an important process, and through forming a dense oxide film on the surface of the aluminum coil, the corrosion resistance and aesthetic appearance of the aluminum coil can be significantly improved.

[0003] A conventional aluminum coil oxidation production line usually includes multiple reaction steps, such as degreasing, alkali washing, neutralization, anodic oxidation, dyeing and sealing, and each step needs to be carried out in a specific reaction solution, and the aluminum coil sequentially passes through these reaction solutions to complete the surface treatment.

[0004] However, when the aluminum coil is continuously oxidized, the oxidation layer of the aluminum coil is usually uneven, and the main reason is that the contact mode of the aluminum coil with the reaction solution is single, and in the alkali washing process, the concentration of sodium metaaluminate in the reaction solution is increased when the aluminum coil reacts with the sodium hydroxide solution, and the generation of the hydrolysis product aluminum hydroxide is inhibited, so that the thickness of the oxidation layer of the outer layer of the aluminum coil gradually thins when the aluminum coil is continuously oxidized, resulting in uneven oxidation layer of the entire aluminum coil.

[0005] In addition, when the aluminum coil is continuously oxidized, the reaction solution of the previous process remains on the surface of the aluminum coil, and these residual liquids will mix with the reaction solution of the next process, resulting in poor reaction effect and further affecting the uniformity of the oxidation layer. SUMMARY

[0006] The present application aims to at least solve one of the above technical problems to some extent.

[0007] To achieve the above object, the first aspect of the present application provides an aluminum coil continuous oxidation production line, comprising: six reaction assemblies and six water washing assemblies are arranged alternately, the aluminum coil passes through the reaction assemblies and the water washing assemblies alternately, characterized in that the six reaction assemblies are arranged in sequence along the process sequence as follows: degreasing assembly, alkali washing assembly, neutralization assembly, anodic oxidation assembly, dyeing assembly and sealing assembly, each of the reaction assemblies comprises a box, a first guide roller, an upper spraying device and a lower stirring device, wherein the box is filled with corresponding reaction solution; the first guide roller is rotatably arranged in the box, the aluminum coil enters from one side of the top of the box, is guided by the first guide roller and is led out from the other side of the box; the upper spraying device and the lower stirring device are arranged on the upper and lower sides of the aluminum coil respectively, and the first guide roller is connected with the driving end of the lower stirring device through a transmission structure; wherein the alkali washing assembly is provided with an adding device to automatically add reaction solution according to the concentration of the solution in the box, and the water washing assembly comprises a water tank, a second guide roller and a squeezing device, wherein the second guide roller is arranged in the water tank; the squeezing device is arranged at the upper part of the water tank and is located in the discharging direction of the aluminum coil, and the aluminum coil passes through the squeezing end of the squeezing device to squeeze the liquid on the aluminum coil.

[0008] In addition, the aluminum coil continuous oxidation production line according to the above-mentioned application can have the following additional technical features:

[0009] As a further description of the above technical solution: the upper spraying device comprises a liquid inlet pipe, a pump body, a liquid outlet pipe, branch pipes and spraying pipes, wherein one end of the liquid inlet pipe is in communication with the bottom of the corresponding box, and the other end is in communication with the pump body; one end of the liquid outlet pipe is in communication with the pump body, and the other end extends above the box; two groups of branch pipes are in communication with the liquid outlet pipe through three-way joints; a plurality of spraying pipes are arranged on each group of branch pipes, and a spraying hole is formed in each spraying pipe to spray the surface of the aluminum coil.

[0010] As a further description of the above technical solution: two groups of opposite lower stirring devices are arranged in each box, and two opposite first guide rollers are arranged in each box, and the two first guide rollers are connected with the corresponding lower stirring devices through the transmission structure.

[0011] As a further description of the above technical solution: each lower stirring device comprises a shielding cover and a paddle, wherein the shielding cover is an inclined cover plate, a plurality of through holes are formed in the shielding cover, and a mounting slot is formed at the bottom; the paddle is rotatably arranged at the mounting slot; wherein the transmission structure connects the corresponding first guide roller and the paddle.

[0012] As a further description of the above technical solution: a heating pipe is arranged below the bottom of the reaction assembly, a first connecting pipe and a second connecting pipe are arranged on the heating pipe, the first connecting pipe extends into the shielding cover, and the second connecting pipe extends into the box.

[0013] As a further description of the above technical solution: the adding device comprises a floating structure, a track groove and an adding tank, the floating structure is rotatably arranged in the box, the track groove is arranged on the moving range of the floating end of the floating structure, and a control valve is arranged on the adding tank and electrically connected with the triggering end of the floating structure; when the concentration of the reaction solution in the box decreases, the floating end of the floating structure decreases, and the triggering end of the floating structure controls the control valve on the adding tank to open.

[0014] As a further description of the above technical solution: the floating structure comprises a floating ball, a connecting arm, a rotating rod and a closing switch, the floating ball is arranged in the track groove, the connecting arm is rotatably arranged on the box, one end of the connecting arm is connected with the floating ball, and the other end is connected with a connecting shaft penetrating through the box, the rotating rod is arranged outside the box and connected with the connecting shaft, and a triggering head is arranged at the end of the rotating rod, and the closing switch is arranged below the triggering head; when the concentration of the reaction solution in the box decreases, the floating ball decreases, the triggering head closes the closing switch to open the control valve on the adding tank.

[0015] As a further description of the above technical solution: the extrusion device comprises a first roller and a second roller, the first roller is rotatably arranged in the water tank, the second roller is rotatably arranged in the water tank through a rotating frame and locked through a damping knob, and the aluminum roll passes between the first roller and the second roller; a water absorption sponge is sleeved on the first roller and the second roller.

[0016] The aluminum roll continuous oxidation production line according to the application can ensure that the aluminum roll is uniformly contacted with the reaction solution on both sides in each reaction assembly through the design of the upper spraying device and the lower stirring device, avoids the problem of uneven oxidation layer caused by single-side treatment, the adding device arranged in the alkali washing assembly can automatically add the reaction solution according to the concentration of the reaction solution in the box, ensures that the concentration of the reaction solution is always in the best state, improves the reaction effect and product quality, the extrusion device in the water washing assembly can effectively remove the residual reaction solution on the surface of the aluminum roll, avoids the mixing of different reaction solutions, ensures the independence and effectiveness of each process, and further ensures the uniformity of the oxidation layer of the aluminum roll.

[0017] Additional aspects and advantages of the application will be described in the following description, some of which will become apparent from the following description, or will be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description, taken in conjunction with the following drawings in which:

[0019] Figure 1 is a structural schematic diagram of an aluminum coil continuous oxidation production line according to one embodiment of the present application;

[0020] Figure 2 is a structural schematic diagram of an internal structure of an aluminum coil continuous oxidation production line according to one embodiment of the present application;

[0021] Figure 3 is a structural schematic diagram of an alkali washing assembly according to one embodiment of the present application;

[0022] Figure 4 is a structural schematic diagram of an upper spraying device according to one embodiment of the present application;

[0023] Figure 5 is a schematic diagram of an upper floating structure according to one embodiment of the present application;

[0024] Figure 6 is a schematic diagram of an upper floating structure according to another embodiment of the present application;

[0025] Figure 7 is a structural schematic diagram of an internal structure of an alkali washing assembly according to one embodiment of the present application;

[0026] Figure 8 is a structural schematic diagram of a connection structure of a first guide roller and a paddle according to one embodiment of the present application;

[0027] Figure 9 is a structural schematic diagram of a water washing assembly according to one embodiment of the present application;

[0028] Figure 10 is a structural schematic diagram of an internal structure of a water washing assembly according to one embodiment of the present application;

[0029] As shown in the drawings:

[0030] 100, defatting assembly; 200, alkali washing assembly; 201, transmission structure; 210, box body; 220, first guide roller; 230, upper spraying device; 231, liquid inlet pipe; 232, pump body; 233, liquid outlet pipe; 234, branch pipe; 235, spraying pipe; 240, lower stirring device; 241, shielding cover; 242, paddle; 250, adding device; 251, floating structure; 2511, floating ball; 2512, connecting arm; 2513, rotating rod; 2514, closing switch; 252, track groove; 253, adding tank; 300, neutralizing assembly; 400, anodic oxidation assembly; 500, dyeing assembly; 600, sealing assembly; 700, water washing assembly; 710, water tank; 720, second guide roller; 730, squeezing device; 731, first roller body; 732, second roller body; 701, damping knob; 800, heating pipe; 801, first connecting pipe; 802, second connecting pipe; 900, aluminum roll. DETAILED DESCRIPTION

[0031] Embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0032] The aluminum roll continuous oxidation production line of the embodiments of the present application is described below in combination with the drawings.

[0033] As shown in Figure 1 and Figure 2 , the aluminum roll continuous oxidation production line of the embodiments of the present application can include six reaction assemblies and six water washing assemblies 700 arranged alternately in sequence, and the aluminum roll 900 passes through the reaction assemblies and the water washing assemblies 700 arranged alternately in sequence, and the six reaction assemblies are in sequence defatting assembly 100, alkali washing assembly 200, neutralizing assembly 300, anodic oxidation assembly 400, dyeing assembly 500 and sealing assembly 600 along the process sequence.

[0034] As shown in Figure 3 and Figure 7 , each reaction assembly includes a box body 210, a first guide roller 220, an upper spraying device 230 and a lower stirring device 240.

[0035] Among them, the box body 210 is filled with corresponding reaction liquid, the first guide roller 220 is rotatably arranged in the box body 210, the aluminum roll 900 enters from one side of the top of the box body 210, and is guided by the first guide roller 220 and then led out from the other side of the box body 210.

[0036] The upper spraying device 230 and the lower stirring device 240 are arranged on the upper and lower sides of the aluminum roll 900 respectively, the upper spraying device 230 sprays one side of the aluminum roll 900, so that more reaction liquid reacts with the aluminum roll 900, and the lower stirring device 240 stirs the reaction liquid on the other side of the aluminum roll 900, so that the reaction liquid reacts with the aluminum roll 900 more quickly and uniformly.

[0037] The first guide roller 220 is connected to the driving end of the lower stirring device 240 through the transmission structure 201, and rotates when guiding the aluminum roll 900 through the transmission of the transmission structure 201, thereby driving the driving end of the lower stirring device 240 to realize the stirring operation of the lower stirring device 240.

[0038] The alkali washing assembly 200 is provided with an adding device 250 to automatically add reaction liquid according to the concentration of the solution in the box 210.

[0039] It should be noted that the natural oxidation film of the aluminum material reacts with sodium hydroxide to generate sodium metaaluminate and water, and the chemical reaction equation is as follows: Al2O3+2NaOH=2NaAlO2+H2O, since the natural oxidation film on the surface of the aluminum is very thin, the reaction is completed very quickly, and gas is generated, the chemical reaction equation is as follows: 2Al+2NaOH+2H2O=2NaAlO2+3H2↑, in a strong alkali aqueous solution, sodium metaaluminate also has the following reaction:

[0040] 2NaOH+2H2O=2NaAlO2+3H2↑, in a strong alkali aqueous solution, sodium metaaluminate also has the following reaction:

[0041] The above reaction increases the concentration of sodium metaaluminate, thereby inhibiting the generation of hydrolysis product aluminum hydroxide, so the concentration of sodium hydroxide must be continuously increased under the condition of continuously increasing the concentration of sodium metaaluminate.

[0042] The water washing assembly 700 includes a water tank 710, a second guide roller 720 and a squeezing device 730.

[0043] The second guide roller 720 is arranged in the water tank 710, and the squeezing device 730 is arranged at the upper part of the water tank 710 and located in the discharging direction of the aluminum roll 900, the aluminum roll 900 passes through the squeezing end of the squeezing device 730 to squeeze the liquid on the aluminum roll 900.

[0044] Specifically, when the relevant staff continuously oxidize the aluminum roll 900, the aluminum roll 900 is sequentially passed through the degreasing assembly 100, the water washing assembly 700, the alkali washing assembly 200, the water washing assembly 700, the neutralizing assembly 300, the water washing assembly 700, the anodic oxidation assembly 400, the water washing assembly 700, the dyeing assembly 500, the water washing assembly 700, the sealing assembly 600 and the water washing assembly 700.

[0045] When the aluminum roll 900 passes through the degreasing assembly 100, the reaction solution in the degreasing assembly 100 removes the grease and other substances on the surface of the aluminum roll 900, and after the water washing assembly 700, the aluminum roll 900 enters the alkali washing assembly 200. As the concentration of sodium metavanadate in the alkali washing assembly 200 increases, the density of the overall solution decreases, and the adding device 250 automatically adds the reaction solution (i.e., sodium hydroxide solution) to ensure that the aluminum roll 900 always maintains the optimal reaction solution concentration when it enters the alkali washing assembly 200.

[0046] After the aluminum roll 900 passes through the alkali washing assembly 200, it is cleaned by the water washing assembly 700, and after passing through the second guide roller 720 in the water tank 710, it passes through the extrusion device 730. The extrusion device 730 extrudes the liquid on the aluminum roll 900 to prevent the liquid on the aluminum roll 900 from entering the next process.

[0047] The aluminum roll sequentially passes through the degreasing, alkali washing, neutralization, anodic oxidation, dyeing, and sealing processes, and then is dried by air to remove the moisture on the surface of the aluminum roll 900. Finally, part of the product needs to be oiled according to customer requirements to play a lubricating and protective role on the surface of the workpiece. The anodized workpiece is cut and wound according to customer needs, and the cutting is mainly for cutting size, without generating edge scraps. After cutting, it is stored for sale.

[0048] In an embodiment of the present application, as shown in Figure 4 The upper spraying device 230 includes a liquid inlet pipe 231, a pump body 232, a liquid outlet pipe 233, branch pipes 234, and spraying pipes 235.

[0049] One end of the liquid inlet pipe 231 is in communication with the bottom of the corresponding tank 210, and the other end is in communication with the pump body 232. One end of the liquid outlet pipe 233 is in communication with the pump body 232, and the other end extends above the tank 210.

[0050] The two groups of branch pipes 234 are respectively in communication with the liquid outlet pipe 233 through a three-way joint. Each group of branch pipes 234 is provided with a plurality of spraying pipes 235, and each spraying pipe 235 is provided with a plurality of spraying holes for spraying the surface of the aluminum roll 900.

[0051] It should be noted that the main parts of the two groups of branch pipes 234 are parallel to the aluminum roll 900 on both sides, so that the spraying ends of the plurality of spraying pipes 235 connected thereto are consistent with the distance of the aluminum roll 900.

[0052] As a possible case, two sets of opposite lower stirring devices 240 are arranged in each box 210, and two opposite first guide rollers 220 are arranged in each box 210, and the two first guide rollers 220 are connected to the corresponding lower stirring devices 240 through the transmission structure 201. By arranging two sets of lower stirring devices 240 in each box 210, the two sides of the aluminum roll 900 can be stirred respectively, so that the two sides of the aluminum roll 900 can be quickly reacted.

[0053] To clearly illustrate the above embodiment, in an embodiment of the present application, as shown in Figure 7 each lower stirring device 240 includes a shielding cover 241 and a paddle 242.

[0054] The shielding cover 241 is an inclined cover plate, a plurality of through holes are formed in the shielding cover 241, and a mounting slot is formed at the bottom, and the paddle 242 is rotatably arranged at the mounting slot. Figure 8 The transmission structure 201 is connected to the corresponding first guide roller 220 and paddle 242.

[0055] It should be noted that after the aluminum roll 900 is guided by the first guide roller 220, the rotation of the first guide roller 220 can be driven, so that the transmission structure 201 drives the paddle 242 to rotate, and when the paddle 242 rotates, the reaction liquid in the box 210 is stirred, so that the reaction liquid is more evenly distributed in the box 210, facilitating uniform reaction of the aluminum roll 900. In addition, when the paddle 242 rotates, part of the reaction liquid can also be brought into the shielding cover 241 and discharged through the plurality of through holes on the shielding cover 241, and more evenly contact with the surface of the aluminum roll 900 to further realize the uniform reaction of the aluminum roll 900.

[0056] In an embodiment of the present application, as shown in Figure 7 a heating pipe 800 is arranged below the bottom of the reaction assembly, the heating pipe 800 is provided with a first connecting pipe 801 and a second connecting pipe 802, wherein the first connecting pipe 801 extends into the lower shielding cover 241, and the second connecting pipe 802 extends into the box 210.

[0057] It should be noted that the second connecting pipe 802 passes the external hot steam into the box 210 to heat the reaction liquid, and the first connecting pipe 801 passes the hot steam into the shielding cover 241, which not only heats the reaction liquid in the shielding cover 241, but also accelerates the discharge of the reaction liquid in the shielding cover 241 from the through holes.

[0058] In an embodiment of the present application, as shown in Figure 3 , Figure 5 and Figure 6As shown, the adding device 250 comprises a floating structure 251, a track groove 252 and an adding tank 253.

[0059] The floating structure 251 is rotatably arranged in the box 210, the track groove 252 is arranged on the moving range of the floating end of the floating structure 251, and the adding tank 253 is provided with a control valve electrically connected with the triggering end of the floating structure 251.

[0060] When the concentration of the reaction solution in the box 210 decreases, the floating end of the floating structure 251 descends, and the floating structure 251 triggers the control valve on the adding tank 253.

[0061] It should be noted that the floating end of the floating structure 251 is embedded in the track groove 252, and can move in the track groove 252 when the floating structure 251 floats up and down.

[0062] For the purpose of clearly describing the above embodiment, in an embodiment of the present application, the floating structure 251 comprises a floating ball 2511, a connecting arm 2512, a rotating rod 2513 and a closing switch 2514.

[0063] The floating ball 2511 is arranged in the track groove 252, the connecting arm 2512 is rotatably arranged on the box 210, one end of the connecting arm 2512 is connected with the floating ball 2511, the other end is connected with a connecting shaft penetrating through the box 210, the rotating rod 2513 is arranged outside the box 210 and connected with the connecting shaft, an end of the rotating rod 2513 is provided with a triggering head, and the closing switch 2514 is arranged below the triggering head.

[0064] When the concentration of the reaction solution in the box 210 decreases, the floating ball 2511 descends, the triggering head closes the closing switch 2514 to open the control valve on the adding tank 253.

[0065] It should be noted that the control valve on the adding tank 253 is always open, when the triggering head on the rotating rod 2513 triggers the closing switch 2514, the closing switch 2514 closes the control valve, and when the triggering head on the rotating rod 2513 is separated from the closing switch 2514, the closing switch 2514 is in a closed state, and the control valve is open.

[0066] Specifically, when the concentration of sodium hydroxide in the alkali washing assembly 200 is normal, the overall concentration has a large density, the buoyancy on the floating ball 2511 is large, the floating ball 2511 is in a floating state, the floating ball 2511 drives the connecting arm 2512 to rotate upward, the rotating rod 2513 drives the triggering head to trigger the closing switch 2514 downward, and the control valve in the adding tank 253 is closed.

[0067] With the reaction of the aluminum roll 900 in the alkali washing assembly 200, the sodium metaborate solution in the alkali washing assembly 200 increases, the sodium hydroxide concentration decreases, and thus the overall reaction liquid concentration decreases, so that the buoyancy of the floating ball 2511 becomes smaller, and then the floating ball 2511 starts to sink, and drives the connecting arm 2512 to rotate downward, and then the rotating rod 2513 drives the trigger head to rotate upward and separates the trigger head from the closing switch 2514, and then the control valve in the adding tank 253 is opened, and the sodium hydroxide solution in the adding tank 253 is injected into the box body 210 to increase the overall reaction liquid concentration.

[0068] In one embodiment of the present application, as shown in Figure 9 and Figure 10 The extrusion device 730 includes a first roller body 731 and a second roller body 732.

[0069] The first roller body 731 is rotatably arranged in the water tank 710, and the second roller body 732 is rotatably arranged in the water tank 710 through a rotating frame and is locked through a damping knob lock 701. The aluminum roll 900 passes between the first roller body 731 and the second roller body 732, and a water-absorbing sponge is sleeved on each of the first roller body 731 and the second roller body 732.

[0070] It should be noted that when the relevant staff removes the liquid on the aluminum roll 900 through the extrusion device 730, first, after the aluminum roll 900 passes through the first roller body 731 and the second roller body 732, the relevant staff can rotate the rotating frame to make the second roller body 732 and the first roller body 731 jointly compress the two sides of the aluminum roll 900. Then, when the aluminum roll 900 passes, the water-absorbing sponge absorbs the liquid on the aluminum roll 900 and is squeezed out and flows back into the water tank 710, so as to avoid the situation that the reaction liquid in the previous process is not cleaned after being cleaned by the water washing assembly 700 and enters the next process, causing the mixing of the reaction liquid.

[0071] In one embodiment of the present application, the degreasing assembly 100 is filled with a degreasing agent with a concentration of 5%-15%, and the temperature is controlled at 60-85°C, and the degreasing time is 1 min. The size of the box body 210 of the degreasing assembly 100 is 6m long x 2.2m wide x 0.83m high.

[0072] The alkali washing assembly 200 is filled with an alkali washing agent (a mixed solution of 15% sodium bicarbonate and 5% sodium gluconate), and the alkali washing temperature is about 50-90°C (heat released by the reaction), and the time is about 2 min. The size of the box body 210 of the alkali washing assembly 200 is 12m long x 2.2m wide x 0.83m high.

[0073] The neutralization assembly 300 is filled with a neutralizing agent (a solution of 2% nitric acid, 20% sulfuric acid, and 5% hydrogen peroxide), and the neutralized neutralization wastewater is treated by a matched wastewater treatment facility. The size of the box 210 of the neutralization assembly 300 is 6 m in length, 2.2 m in width, and 0.83 m in height.

[0074] The anodic oxidation assembly 400 is filled with an electrolyte solution (a 17%-23% sulfuric acid solution), and the temperature is controlled at 20℃±2℃, and the time is about 4 min. The surface of the aluminum workpiece is formed with an aluminum oxide film by electrolysis. The box 210 of the anodic oxidation assembly 400 is divided into a conductive groove and an oxidation groove, and the size of the conductive groove is 6 m in length, 2.2 m in width, and 0.83 m in height, and the size of the oxidation groove is 28 m in length, 2.2 m in width, and 0.83 m in height.

[0075] The dyeing assembly 500 is filled with a dyeing agent, and the dyeing operation is performed by a dyeing method. The aluminum workpiece is immediately immersed in a solution containing a dye after being cleaned after oxidation and polishing. The pores of the oxidation film are dyed in various colors by adsorbing the dye. The dyeing method has the advantages of fast coloring, bright color, and simple operation. After dyeing, the dye is firmly attached to the film pores by sealing treatment, which improves the corrosion resistance, anti-pollution ability, and color retention of the film layer. The size of the box 210 of the dyeing assembly 500 is 9 m in length, 2.2 m in width, and 0.83 m in height.

[0076] The sealing assembly 600 is filled with a sealing agent to seal the small pores on the surface of the aluminum material, so that the aluminum material has corrosion resistance. The temperature is 60℃-85℃, and the time is 2 min. The size of the box 210 of the sealing assembly 600 is 12 m in length, 2.2 m in width, and 0.83 m in height.

[0077] The water washing assembly 700 is filled with clean water.

[0078] In summary, according to the aluminum roll continuous oxidation production line of the embodiment, through the design of the upper spraying device 230 and the lower stirring device 240, the aluminum roll 900 can be uniformly contacted with the reaction liquid on both sides in each reaction assembly, and the problem of uneven oxidation layer caused by single-sided treatment is avoided. The adding device 250 is arranged in the alkali washing assembly 200, which can automatically add the reaction liquid according to the concentration of the reaction liquid in the box 210, so as to ensure that the concentration of the reaction liquid is always in the best state, and improve the reaction effect and product quality. Through the extrusion device 730 in the water washing assembly 700, the residual reaction liquid on the surface of the aluminum roll 900 can be effectively removed, the mixing between different reaction liquids is avoided, the independence and effectiveness of each process are ensured, and the uniformity of the oxidation layer of the aluminum roll 900 is further ensured.

[0079] In the description of the specification, the terms "first", "second", "third", etc. are used only to describe various features, and are not to be construed as indicating or implying relative importance or a specific order of the features. Thus, the features with "first", "second", "third" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0080] In the description of the specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Also, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. Furthermore, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples, without contradiction.

[0081] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

Claims

1. A continuous production line for the oxidation of aluminum coils, six reaction assemblies are alternately arranged with six water washing assemblies (700) in sequence, and an aluminum coil (900) passes through the alternately arranged reaction assemblies and water washing assemblies (700) in sequence, characterized in that, Six reaction assemblies are arranged in sequence along the process sequence, i.e. a degreasing assembly (100), an alkali cleaning assembly (200), a neutralizing assembly (300), an anodic oxidation assembly (400), a dyeing assembly (500) and a sealing assembly (600), each of the reaction assemblies comprises a box (210), a first guide roller (220), an upper spraying structure (230) and a lower stirring structure (240), wherein, The box (210) is filled with corresponding reaction liquid; The first guide roller (220) is rotatably arranged in the box (210), the aluminum roll (900) enters from one side of the top of the box (210), and is guided by the first guide roller (220) and then led out from the other side of the box (210); The upper spraying device (230) and the lower stirring device (240) are arranged on the upper and lower sides of the aluminum roll (900) respectively, and the first guide roller (220) is connected to the driving end of the lower stirring device (240) through a transmission structure (201); The alkali cleaning assembly (200) is provided with an adding device (250) to automatically add reaction liquid according to the concentration of the solution in the box (210). The water washing assembly (700) comprises a water tank (710), a second guide roller (720) and a squeezing device (730), wherein, The second guide roller (720) is arranged in the water tank (710); The squeezing device (730) is arranged at the upper part of the water tank (710) and located in the discharging direction of the aluminum roll (900), the aluminum roll (900) passes through the squeezing end of the squeezing device (730) to squeeze out the liquid on the aluminum roll (900).

2. The continuous production line for the oxidation of aluminum coils according to claim 1, characterized in that, The upper spraying device (230) comprises a liquid inlet pipe (231), a pump body (232), a liquid outlet pipe (233), branch pipes (234) and spraying pipes (235), wherein, One end of the liquid inlet pipe (231) is in communication with the bottom of the corresponding box (210), and the other end is in communication with the pump body (232); One end of the liquid outlet pipe (233) is in communication with the pump body (232), and the other end extends above the box (210); Two groups of branch pipes (234) are in communication with the liquid outlet pipe (233) through three-way joints respectively; Each group of branch pipes (234) is provided with a plurality of spraying pipes (235), and each spraying pipe (235) is provided with a plurality of spraying holes for spraying the surface of the aluminum roll (900).

3. The continuous production line for the oxidation of aluminum coils according to claim 1, characterized in that, Each box (210) is provided with two groups of opposite lower stirring devices (240), and each box (210) is provided with two opposite first guide rollers (220), and the two first guide rollers (220) are connected to the corresponding lower stirring devices (240) through the transmission structure (201) respectively.

4. The continuous production line for the oxidation of aluminum coils according to claim 1, characterized in that, Each lower stirring device (240) comprises a shielding cover (241) and a paddle (242), wherein, The shielding cover (241) is an inclined cover plate, a plurality of through holes are formed in the shielding cover (241), and a mounting slot is formed in the bottom of the shielding cover (241); The paddle (242) is rotatably arranged at the mounting slot; The transmission structure (201) is connected to the corresponding first guide roller (220) and the paddle (242).

5. The continuous production line for the oxidation of aluminum coils according to claim 4, characterized in that, A heating pipe (800) is arranged below the bottom of the reaction assembly, a first connecting pipe (801) and a second connecting pipe (802) are arranged on the heating pipe (800), the first connecting pipe (801) extends into the shielding cover (241), and the second connecting pipe (802) extends into the box body (210).

6. The continuous production line for the oxidation of aluminum coils according to claim 1, characterized in that, The adding device (250) comprises a floating structure (251), a track groove (252), and an adding tank (253), wherein, The floating structure (251) is rotatably arranged in the box body (210); The track groove (252) is arranged on the moving range of the floating end of the floating structure (251); A control valve is arranged on the adding tank (253), and the control valve is electrically connected to the triggering end of the floating structure (251); When the concentration of the reaction solution in the box body (210) decreases, the floating end of the floating structure (251) decreases, and the triggering end of the floating structure (251) controls the control valve on the adding tank (253).

7. The continuous production line for the oxidation of aluminium coils according to claim 6, characterised in that, The floating structure (251) comprises a floating ball (2511), a connecting arm (2512), a rotating rod (2513), and a closing switch (2514), wherein, The floating ball (2511) is arranged in the track groove (252); The connecting arm (2512) is rotatably arranged on the box body (210), one end of the connecting arm (2512) is connected to the floating ball (2511), and the other end is connected to a connecting shaft penetrating the box body (210); The rotating rod (2513) is arranged outside the box body (210) and is connected to the connecting shaft, and an end of the rotating rod (2513) is provided with a triggering head; The closing switch (2514) is arranged below the triggering head; When the concentration of the reaction solution in the box body (210) decreases, the floating ball (2511) decreases, the triggering head closes the closing switch (2514), and the control valve on the adding tank (253) is opened.

8. The continuous production line for the oxidation of aluminum coils according to claim 1, characterized in that, The extrusion device (730) comprises a first roller body (731) and a second roller body (732), wherein, The first roller body (731) is rotatably arranged in the water tank (710); The second roller body (732) is rotatably arranged in the water tank (710) through a rotating frame and is locked through a damping knob (701); The aluminum roll (900) passes between the first roller body (731) and the second roller body (732); A water-absorbing sponge is sleeved on the first roller body (731) and the second roller body (732).

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