Cooling device for metal strip and roller coating equipment

Abstract

The utility model provides a cooling device for a metal strip and roller coating equipment, and relates to the technical field of roller coating equipment, the cooling device for the metal strip comprises a supporting roller set, an air cooling assembly, a water cooling assembly and a traction assembly, and the supporting roller set comprises an air cooling section, a water cooling section and a guide-out section; the air cooling assembly is arranged above the air cooling section; the water cooling assembly comprises a cooling water tank, the water cooling section is located in the cooling water tank, and the air cooling section and the leading-out section are both located outside the cooling water tank. The metal strip can be dragged to the water cooling section from the air cooling section under the traction of the traction assembly, the metal strip on the water cooling section can be soaked and cooled by cooling water in the cooling water pool, and finally the metal strip can be dragged to the leading-out section from the water cooling section under the traction of the traction assembly. Due to the fact that the cooling device for the metal strip is used for conducting air blowing cooling and soaking cooling on the metal strip in sequence, the cooling effect on a thick metal plate is improved.

Description

Technical Field

[0001] This application relates to the technical field of roll coating equipment, and particularly to a cooling device for metal strips and roll coating equipment. Background Art

[0002] During the production of pre-rolled aluminum strips and other metal strips, the coating is dried and cured at high temperature through a drying furnace. After the metal strip exits the drying furnace, a cooling process is required before entering the next process.

[0003] In the prior art, the commonly used cooling method in the cooling process is air cooling. Several groups of fans are installed at the outlet of the drying furnace to blow air on the metal strip for cooling.

[0004] However, the cooling effect of the fan on thick metal plates is poor, which affects the quality of the subsequent processes of the metal strip. Utility Model Content

[0005] This application provides a cooling device for metal strips and roll coating equipment to solve the technical problem of poor cooling effect on thick metal plates in the prior art.

[0006] The first aspect of the embodiment of this application provides a cooling device for metal strips, including:

[0007] A support roll group for supporting the metal strip, the support roll group includes an air-cooling section, a water-cooling section, and a lead-out section arranged at intervals in sequence;

[0008] An air-cooling component is arranged above the air-cooling section, and the air-cooling component is used to blow air on the metal strip on the air-cooling section to cool it down;

[0009] A water-cooling component includes a cooling water pool. The water-cooling section is located inside the cooling water pool, and both the air-cooling section and the lead-out section are located outside the cooling water pool. Cooling water is provided inside the cooling water pool, and the cooling water is used to soak and cool the metal strip on the water-cooling section;

[0010] A traction component is used to traction the metal strip to pass through the air-cooling section, the water-cooling section, and the lead-out section in sequence.

[0011] In a possible implementation manner, the air-cooling component includes a cold air blower and an air collecting box. The air collecting box includes a first air inlet and at least one first air outlet. The cold air blower is communicated with the first air inlet to blow air into the air collecting box. Each of the first air outlets is arranged at intervals along the moving direction of the metal strip on the air-cooling section, and each of the first air outlets faces the air-cooling section to blow air on the metal strip on the air-cooling section to cool it down.

[0012] In a possible implementation, the air cooler includes a housing, a fan, and a liquid storage barrel. The housing is provided with a second air outlet and at least one second air inlet. The fan is disposed in the housing. The air inlet end of the fan communicates with each of the second air inlets, and the air outlet end of the fan communicates with one side of the second air outlet. The other side of the second air outlet communicates with the first air inlet. The liquid storage barrel is disposed in the housing, and the opening of the liquid storage barrel faces the air inlet end of the fan. A coolant is provided in the liquid storage barrel, and the fan is configured to adsorb the coolant and blow the coolant into water mist and blow it into the air collecting box.

[0013] In a possible implementation, the air-cooling section includes at least one first roller, the water-cooling section includes at least one second roller, and the guiding section includes at least one third roller. Each of the first roller, the second roller, and the third roller is arranged at intervals in sequence along the moving direction of the metal strip. The upper ends of each of the first rollers are configured to support the metal strip, the lower ends of each of the second rollers support the metal strip, and the upper ends of each of the third rollers are configured to support the metal strip.

[0014] In a possible implementation, the water-cooling assembly further includes a cooling tower, a first circulating conveying assembly, and a second circulating conveying assembly. The cooling tower is configured to store the cooling water. The cooling tower has a water inlet and a water outlet. The cooling water pool has a drain port and a water injection port. The water inlet communicates with the drain port through the first circulating conveying assembly, and the water outlet communicates with the water injection port through the second circulating conveying assembly.

[0015] In a possible implementation, a drying assembly is further included. The drying assembly is disposed outside the cooling water pool and is located between the water-cooling section and the guiding section. The drying assembly is configured to dry the moisture on the metal strip that moves from the water-cooling section to the guiding section.

[0016] In a possible implementation, the drying assembly includes a squeezing roller, a first air knife, and a second air knife. The input end of the squeezing roller corresponds to the end of the water-cooling section away from the air-cooling section, so that the metal strip output from the water-cooling section moves to the input end of the squeezing roller. The output end of the squeezing roller corresponds to the guiding section, so that the metal strip output from the output end of the squeezing roller moves onto the guiding section. The first air knife and the second air knife are both disposed between the squeezing roller and the guiding section. The first air knife faces one side of the metal strip, and the second air knife faces the other side of the metal strip.

[0017] In a possible implementation, the support roller group further includes at least one heat-conducting roller. Each of the heat-conducting rollers is arranged at intervals in the moving direction of the metal strip, and is disposed between the air-cooling section and the water-cooling section. The heat-conducting roller is used for supporting and cooling the metal strip.

[0018] In a possible implementation, a water vapor collection mechanism is further included. The water vapor collection mechanism includes a collection hood and a suction fan. The collection hood has a collection inlet and a collection outlet. The collection hood is disposed above the cooling water tank, and the collection inlet faces the cooling water tank. The projection of the cooling water tank facing the collection inlet is located within the collection inlet. The suction fan is disposed at the collection outlet, so that the water vapor above the cooling water tank is sucked from the collection inlet to the collection outlet.

[0019] A second aspect of the embodiments of the present application provides a roll coating device, including a drying device for drying the coating on the metal strip, and further including the cooling device for the metal strip according to any one of the above. The air-cooling section of the cooling device for the metal strip is used to receive the metal strip with the coating dried by the drying device.

[0020] A cooling device for metal strip and a roll coating equipment provided by the present application. The cooling device for metal strip includes a support roll group, an air cooling component, a water cooling component and a traction component. The support roll group is used to support the metal strip, and the support roll group includes an air cooling section, a water cooling section and an outlet section arranged at intervals in sequence. The air cooling component is arranged above the air cooling section and is used to blow air on the metal strip on the air cooling section to cool it down. The water cooling component includes a cooling water pool. The water cooling section is located inside the cooling water pool, and both the air cooling section and the outlet section are located outside the cooling water pool. Cooling water is arranged inside the cooling water pool and is used to soak and cool the metal strip on the water cooling section. The traction component is used to traction the metal strip to pass through the air cooling section, the water cooling section and the outlet section in sequence. When using the cooling device for metal strip of the present application, first place the metal strip on the air cooling section. The air cooling component above the air cooling section will blow air on the metal strip on the air cooling section to cool it down, realizing the preliminary cooling of the metal strip. Then, under the traction of the traction component, the metal strip will be tractioned from the air cooling section to the water cooling section. Since the water cooling section is located inside the cooling water pool, the cooling water inside the cooling water pool will soak and cool the metal strip on the water cooling section, realizing the secondary cooling of the metal strip. Finally, under the traction of the traction component, the metal strip will be tractioned from the water cooling section to the outlet section. The outlet section can be connected to the next process of the metal strip or directly export the metal strip. Since the cooling device for metal strip of the present application cools the metal strip by blowing air and soaking in sequence, compared with the existing method of only cooling by a fan, the cooling effect of the present application on the metal strip is better. Since the water cooling section is located inside the cooling water pool, the metal strip is soaked and cooled by the cooling water inside the cooling water pool, thus improving the cooling effect on the metal plate with a relatively thick thickness. Brief Description of the Drawings

[0021] The accompanying drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present application and used together with the specification to explain the principles of the present application.

[0022] Figure 1 Structural schematic diagram of the cooling device for metal strip provided for the embodiment of the present application;

[0023] Figure 2 Structural schematic diagram of the cooling water pool in the cooling device for metal strip provided for the embodiment of the present application;

[0024] Figure 3 Structural schematic diagram of the air cooling component in the cooling device for metal strip provided for the embodiment of the present application;

[0025] Figure 4 Structural schematic diagram of the water cooling component in the cooling device for metal strip provided for the embodiment of the present application.

[0026] Description of the Reference Numerals:

[0027] 10 - Metal strip

[0028] 100 - Support roll group; 110 - Air cooling section; 120 - Water cooling section; 130 - Export section; 140 - Heat conduction roll

[0029] 200 - Air cooling assembly; 210 - Air cooler; 211 - Housing; 2111 - Second air inlet; 2112 - Second air outlet; 2113 - Liquid injection port; 212 - Fan; 213 - Liquid storage barrel; 220 - Air collecting box; 221 - First air inlet; 222 - First air outlet

[0030] 300 - Water cooling assembly; 310 - Cooling water tank; 311 - Drain outlet; 312 - Water injection port; 320 - Cooling tower; 321 - First tower body; 3211 - Water inlet; 322 - Second tower body; 3221 - Water outlet; 330 - First circulation conveying assembly; 340 - Second circulation conveying assembly

[0031] 400 - Traction assembly

[0032] 500 - Drying assembly; 510 - Squeezing roll; 520 - First air knife; 530 - Second air knife

[0033] 600 - Water vapor collection mechanism; 610 - Collection hood; 611 - Collection inlet; 612 - Collection outlet; 620 - Suction fan

[0034] 700 - Filter screen

[0035] 800 - Cooling liquid

[0036] Through the above - mentioned drawings, specific embodiments of the present application have been shown, and there will be more detailed descriptions hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. Detailed Description of the Embodiment

[0037] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts fall within the scope of protection of the present application.

[0038] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship, movement conditions, etc. between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0039] In this application, unless otherwise clearly defined and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of this application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or the solution where A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0041] During the production of metal strips such as pre-coated aluminum strips, the coating is dried and cured at high temperature by a drying furnace. After the metal strip exits the drying furnace, a cooling process is required before entering the next process. Among them, the next process can be a re-coating process for the metal strip or directly exporting and encapsulating the metal strip.

[0042] In the prior art, the commonly used cooling method for the cooling process is air cooling, and several groups of fans are installed at the outlet of the drying furnace to blow and cool the metal strip.

[0043] However, the cooling effect of the fan on metal plates with a relatively thick thickness, such as metal plates with a thickness > 0.2 mm, is poor, which affects the quality of the subsequent processes of the metal strip.

[0044] To solve the technical problem of poor cooling effect for thick metal sheets in the prior art, the present application proposes a cooling device for metal strips and a roll coating equipment. The cooling device for metal strips includes a support roll group, an air cooling component, a water cooling component, and a traction component. The support roll group is used to support the metal strip, and the support roll group includes an air cooling section, a water cooling section, and an outlet section arranged at intervals in sequence. The air cooling component is arranged above the air cooling section and is used to blow air on the metal strip in the air cooling section to cool it down. The water cooling component includes a cooling water pool. The water cooling section is located inside the cooling water pool, and both the air cooling section and the outlet section are located outside the cooling water pool. Cooling water is arranged inside the cooling water pool and is used to soak and cool the metal strip on the water cooling section. The traction component is used to traction the metal strip through the air cooling section, the water cooling section, and the outlet section in sequence.

[0045] When using the cooling device for metal strips of the present application, first place the metal strip on the air cooling section. The air cooling component above the air cooling section will blow air on the metal strip in the air cooling section to cool it down, achieving the preliminary cooling of the metal strip. Then, under the traction of the traction component, the metal strip will be tracted from the air cooling section to the water cooling section. Since the water cooling section is located inside the cooling water pool, the cooling water inside the cooling water pool will soak and cool the metal strip on the water cooling section, achieving the re-cooling of the metal strip. Finally, under the traction of the traction component, the metal strip will be tracted from the water cooling section to the outlet section. The outlet section can be connected to the next process of the metal strip or directly export the metal strip. Since the cooling device for metal strips of the present application cools the metal strip by blowing air and soaking in sequence, compared with the prior art that only cools by a fan, the cooling effect of the present application on the metal strip is better. Since the water cooling section is located inside the cooling water pool, the metal strip is soaked and cooled by the cooling water inside the cooling water pool, thus improving the cooling effect on thick metal sheets and solving the technical problem of poor cooling effect for thick metal sheets in the prior art.

[0046] The following will specifically describe the technical solutions of the application with reference to the accompanying drawings through specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

[0047] Refer to Figures 1 to 4 as shown, Figure 1 is a schematic structural diagram of the cooling device for metal strips provided by the embodiment of the present application; Figure 2 is a schematic structural diagram of the cooling water pool in the cooling device for metal strips provided by the embodiment of the present application; Figure 3 is a schematic structural diagram of the air cooling component in the cooling device for metal strips provided by the embodiment of the present application; Figure 4 is a schematic structural diagram of the water cooling component in the cooling device for metal strips provided by the embodiment of the present application.

[0048] In the embodiments of the present application, with reference to Figure 1 and Figure 2 As shown, the embodiments of the present application provide a cooling device for a metal strip, including a support roller group 100, an air cooling assembly 200, a water cooling assembly 300, and a traction assembly 400.

[0049] The support roller group 100 is used to support the metal strip 10. The support roller group 100 includes an air cooling section 110, a water cooling section 120, and a lead-out section 130 that are arranged at intervals in sequence.

[0050] The air cooling assembly 200 is arranged above the air cooling section 110. The air cooling assembly 200 is used to blow air on the metal strip 10 on the air cooling section 110 to cool it down.

[0051] The water cooling assembly 300 includes a cooling water pool 310. The water cooling section 120 is located inside the cooling water pool 310, and both the air cooling section 110 and the lead-out section 130 are located outside the cooling water pool 310. Cooling water is provided inside the cooling water pool 310, and the cooling water is used to soak and cool the metal strip 10 on the water cooling section 120.

[0052] The traction assembly 400 is used to traction the metal strip 10 to pass through the air cooling section 110, the water cooling section 120, and the lead-out section 130 in sequence.

[0053] In the cooling device for the metal strip of the present application, the support roller group 100 plays a role in supporting and guiding the metal strip 10. Under the traction of the traction assembly 400, the metal strip 10 is successively tractioned from the air cooling section 110 of the support roller group 100 to the water cooling section 120 and the lead-out section 130.

[0054] It should be noted that in the air cooling section 110, the water cooling section 120, and the lead-out section 130, there is at least one roller body, and the metal strip 10 can be a pre-coated aluminum strip.

[0055] The traction assembly 400 can be a traction device such as a traction rope or a robotic arm to traction the metal strip 10 to pass through the air cooling section 110, the water cooling section 120, and the lead-out section 130 in sequence. The traction assembly 400 can be arranged to move away from the water cooling section 120 on the lead-out section 130, so as to facilitate the movement of the traction of the metal strip 10.

[0056] The air cooling assembly 200 can blow air on the metal strip 10 on the air cooling section 110 to cool it down. The air cooling assembly 200 can be a cooling fan, an air conditioner fan, a hair dryer, etc.

[0057] The water-cooling component 300 includes a cooling water pool 310. The water-cooling section 120 is located within the cooling water pool 310. Cooling water is contained within the cooling water pool 310, and the water level of the cooling water is higher than that of the water-cooling section 120. After the traction component 400 pulls the metal strip 10 on the air-cooling section 110 to the water-cooling section 120, at this time, the metal strip 10 will enter the water-cooling section 120 within the cooling water pool 310. Thus, the metal strip 10 pulled onto the water-cooling section 120 can be immersed in the cooling water within the cooling water pool 310, achieving water-cooling and temperature reduction of the metal strip 10.

[0058] Finally, the traction component 400 pulls the metal strip 10 on the water-cooling section 120 to the lead-out section 130. At this time, the metal strip 10 will be pulled out from within the cooling water pool 310.

[0059] The lead-out section 130 can be connected to the next process of the metal strip 10. The traction component 400 can pull the metal strip 10 on the lead-out section 130 into the next process. Or when the metal strip 10 does not require the next process, the traction component 400 can directly lead out the metal strip on the lead-out section 130.

[0060] When using the cooling device for the metal strip of the present application, first, the metal strip 10 is placed on the air-cooling section 110. The air-cooling component 200 above the air-cooling section 110 will blow air on the metal strip 10 on the air-cooling section 110 to reduce the temperature, achieving preliminary temperature reduction of the metal strip 10. Then, the metal strip 10 is pulled from the air-cooling section 110 to the water-cooling section 120 under the traction of the traction component 400. Since the water-cooling section 120 is located inside the cooling water pool 310, the cooling water inside the cooling water pool 310 will immerse and cool the metal strip 10 on the water-cooling section 120, achieving re-temperature reduction of the metal strip 10. Finally, the metal strip 10 is pulled from the water-cooling section 120 to the lead-out section 130 under the traction of the traction component 400. The lead-out section 130 can be connected to the next process of the metal strip 10 or directly lead out the metal strip 10. Since the cooling device for the metal strip of the present application sequentially blows air and immerses the metal strip 10 for temperature reduction, compared with the existing method of only using the fan 212 for temperature reduction, the present application has a better temperature reduction effect on the metal strip 10. Since the water-cooling section 120 is located inside the cooling water pool 310, the metal strip 10 is immersed in the cooling water inside the cooling water pool 310 for temperature reduction, thereby improving the temperature reduction effect on the relatively thick metal plate and solving the technical problem of poor cooling effect on the relatively thick metal plate in the prior art.

[0061] Further, one end of the air-cooling section 110 away from the water-cooling section 120 is connected to a drying furnace.

[0062] In this embodiment, after the metal sheet comes out of the drying furnace, it can enter the air-cooling section 110. At this time, the air-cooling section 110 is closer to the drying furnace than the water-cooling section 120, and the water-cooling section 120 is farther from the drying furnace than the air-cooling section 110. Thus, it is possible to prevent the water vapor in the water-cooling section 120 from entering the drying furnace and affecting the product quality of the metal sheet in the drying furnace. In this embodiment, air cooling is carried out first to initially reduce the temperature of the metal sheet and reduce the generation of water vapor. At the same time, the water vapor generated by the water-cooling section 120 is kept away from the drying furnace, ensuring the drying quality of the drying furnace.

[0063] In another embodiment, referring to FIGS. 1 and Figure 3 As shown, the air-cooling assembly 200 includes a cooling fan 210 and an air collecting box 220. The air collecting box 220 includes a first air inlet 221 and at least one first air outlet 222. The cooling fan 210 is communicated with the first air inlet 221 to blow air into the air collecting box 220. The first air outlets 222 are arranged at intervals along the moving direction of the metal strip 10 on the air-cooling section 110, and each first air outlet 222 faces the air-cooling section 110 to blow air on the metal strip 10 on the air-cooling section 110 to cool it down.

[0064] In this embodiment, the metal strip 10 is cooled by blowing air through at least one first air outlet 222, thereby improving the cooling effect on the metal strip 10.

[0065] Furthermore, the number of the first air outlets 222 can be multiple. Thus, during the process of the metal strip 10 being pulled, the same position of the metal strip 10 can be blown and cooled by multiple first air outlets 222, further improving the cooling effect on the metal strip 10.

[0066] In some embodiments, referring to Figure 3 As shown, the cooling fan 210 includes a housing 211, a fan 212 and a liquid storage barrel 213. A second air outlet 2112 and at least one second air inlet 2111 are provided on the housing 211. The fan 212 is arranged in the housing 211. The air inlet end of the fan 212 is communicated with each second air inlet 2111, and the air outlet end of the fan 212 is communicated with one side of the second air outlet 2112. The other side of the second air outlet 2112 is communicated with the first air inlet 221. The liquid storage barrel 213 is arranged in the housing 211, and the opening of the liquid storage barrel 213 faces the air inlet end of the fan 212. A coolant 800 is arranged in the liquid storage barrel 213, and the fan 212 is used to adsorb the coolant 800 and blow the coolant 800 into water mist and blow it into the air collecting box 220.

[0067] In this embodiment, the fan 212 adsorbs the coolant 800 in the liquid storage barrel 213 and blows it into water mist and blows it into the air collecting box 220. Under the action of the fan 212, after a certain pressure is formed in the air collecting box 220, the water mist and air flow are discharged through the first air outlet 222, so as to cool the metal strip 10.

[0068] Furthermore, the number of the second air inlets 2111 is specifically multiple. Specifically, the second air inlets 2111 are arranged on the peripheral side walls of the housing 211, so as to ensure that the air intake of the fan 212 in the housing 211 is large enough, thereby increasing the air output of the fan 212. And because there is only one second air outlet 2112, the speed of the air flow flowing out from the second air outlet 2112 is increased, thereby increasing the speed of the air flow and water mist blown out from the first air outlet 222 of the air collecting box 220, and further increasing the cooling effect on the metal strip 10.

[0069] Furthermore, the wind direction of the first air outlet 222 is perpendicular to the metal strip 10. The length of the first air outlet 222 is 1200 mm - 1600 mm, the width of the first air outlet 222 is 20 mm - 40 mm, and the air volume of the air cooler 210 is 3000 m³ / h - 5000 m³ / h.

[0070] In this embodiment, the wind from the first air outlet 222 blows vertically towards the metal strip 10, thereby improving the cooling effect on the metal strip 10. The air volume of the air cooler 210 is sufficient, and the water mist can be formed and has sufficient power, further ensuring the cooling effect on the metal strip 10.

[0071] Furthermore, referring to Figure 3 As shown, a liquid injection port 2113 is provided on the housing 211. The liquid injection port 2113 is communicated with the liquid storage barrel 213, so as to facilitate adding the coolant 800 to the liquid storage barrel 213.

[0072] Furthermore, the second air inlets 2111 are arranged on the peripheral side walls of the housing 211, and a filter screen 700 is provided on each second air inlet 2111. The filter screen 700 is used to filter impurities in the air flow entering the housing 211. Thus, impurities in the air can be prevented from being blown onto the metal strip 10.

[0073] In another possible embodiment, referring to Figure 1 As shown, the air cooling section 110 includes at least one first roller, the water cooling section 120 includes at least one second roller, the lead-out section 130 includes at least one third roller, and the first rollers, the second rollers and the third rollers are all arranged at intervals in the moving direction of the metal strip 10 in sequence. The upper ends of the first rollers are used to support the metal strip 10, the lower ends of the second rollers support the metal strip 10, and the upper ends of the third rollers are used to support the metal strip 10.

[0074] In this embodiment, since the lower end of the second roller body supports the metal strip 10, the second roller body has a pressing effect on the metal strip 10, so that the metal strip 10 can be pressed into the cooling water tank 310, so that the metal strip 10 can be completely immersed in the cooling water tank 310, preventing the metal strip 10 from floating out of the water surface of the cooling water tank 310.

[0075] The upper ends of the first roller bodies and the third roller bodies support the metal strip 10, and their main function is to convey and support the metal strip 10.

[0076] In some embodiments, referring to Figure 4 As shown, the water cooling assembly 300 further includes a cooling tower 320, a first circulation conveying assembly 330 and a second circulation conveying assembly 340. The cooling tower 320 is used to store cooling water. The cooling tower 320 has a water inlet 3211 and a water outlet 3221. The cooling water tank 310 has a drain port 311 and a water injection port 312. The water inlet 3211 is communicated with the drain port 311 through the first circulation conveying assembly 330, so that the cooling water in the cooling water tank 310 flows back into the cooling tower 320. The water outlet 3221 is communicated with the water injection port 312 through the second circulation conveying assembly 340, so that the cooling water in the cooling tower 320 is conveyed into the cooling water tank 310.

[0077] In this embodiment, the first circulation conveying assembly 330 includes a first conveying pipe and a first circulation water pump, and the second circulation conveying assembly 340 includes a second conveying pipe and a second circulation water pump. Under the action of the first circulation conveying assembly 330 and the second circulation conveying assembly 340, the cooling water in the cooling water tank 310 and the cooling water in the cooling tower 320 are circulated and exchanged, so as to ensure that the temperature of the cooling water in the cooling water tank 310 is low enough, thereby improving the cooling effect on the metal strip 10.

[0078] Further, referring to Figure 4 As shown, the cooling tower 320 includes a first tower body 321 and a second tower body 322. The first tower body 321 is arranged above the second tower body 322 through support legs, and there is a gap between the first tower body 321 and the second tower body 322. A plurality of water outlet holes are arranged at the bottom of the first tower body 321, and a plurality of water inlet holes are arranged at the top of the second tower body 322. Each water outlet hole corresponds to each water inlet hole one by one, so that the cooling water in the first tower body 321 flows into the second tower body 322. The water inlet 3211 is arranged on the first tower body 321, and the water outlet 3221 is arranged on the second tower body 322.

[0079] In this embodiment, the cooling water in the first tower body 321 continuously drips into the second tower body 322, and the dripping water droplets are fully in contact with the air for cooling.

[0080] Further, referring toFigure 2 As shown, a cooling water tank is provided on the cooling water pool 310. The cooling water tank is used to hold cooling water. The cooling water tank has a V-shaped structure, and both ends of the opening of the V-shaped structure are respectively close to the air-cooling section 110 and the lead-out section 130.

[0081] In this embodiment, the cooling water tank is set to have a V-shaped structure. While reducing the volume of the cooling water, it ensures that the cooling water can completely cover the entire metal strip 10, thereby increasing the circulation speed of the cooling water in the cooling water pool 310 and ensuring the cooling effect on the metal strip 10.

[0082] Further, as shown in Figure 2 the height of the drain port 311 is greater than the height of the water-cooling section 120.

[0083] In this embodiment, it can avoid affecting the cooling effect on the metal strip 10 on the water-cooling section 120 when the cooling water circulates in the cooling water pool 310, and ensure that the cooling water in the cooling water pool 310 can always cool the metal strip 10.

[0084] In other embodiments, as shown in Figure 2 a drying assembly 500 is further included. The drying assembly 500 is arranged outside the cooling water pool 310 and is located between the water-cooling section 120 and the lead-out section 130. The drying assembly 500 is used to dry the moisture on the metal strip 10 that moves from the water-cooling section 120 to the lead-out section 130.

[0085] In this embodiment, when the metal plate moves out of the cooling water pool 310, the drying assembly 500 can dry the metal plate coming out of the cooling water pool 310 to remove the moisture on the metal plate.

[0086] Specifically, the drying assembly 500 can be a dryer, a hair dryer, a heat radiation device, a vacuum drying device, etc.

[0087] In some embodiments, as shown in Figure 2 the drying assembly 500 includes a squeezing roller 510, a first air knife 520 and a second air knife 530. The input end of the squeezing roller 510 corresponds to the end of the water-cooling section 120 away from the air-cooling section 110, so that the metal strip 10 output from the water-cooling section 120 moves to the input end of the squeezing roller 510. The output end of the squeezing roller 510 corresponds to the lead-out section 130, so that the metal strip 10 output from the output end of the squeezing roller 510 moves to the lead-out section 130. The squeezing roller 510 is used to dry the moisture on the metal strip 10. Both the first air knife 520 and the second air knife 530 are arranged between the squeezing roller 510 and the lead-out section 130, and the first air knife 520 faces one side of the metal strip 10, and the second air knife 530 faces the other side of the metal strip 10.

[0088] In this embodiment, the squeezing roller 510 includes two roller bodies. The surface of the roller body is provided with a water-absorbing layer, such as a sponge. A water-absorbing channel is formed between the two roller bodies. The water-absorbing channel is used for the metal strip 10 to pass through. When the metal strip 10 passes through the water-absorbing channel, the water-absorbing layer on the surface of the roller body will adsorb the moisture on the surface of the metal strip 10, thereby achieving the drying effect on the metal strip 10.

[0089] It should be noted that the specific structure of the squeezing roller 510 can also adopt the existing structure of the squeezing roller, as long as it can ensure the drying of the moisture on the metal strip 10.

[0090] After the metal strip 10 passes through the squeezing roller 510, the first air knife 520 and the second air knife 530 are respectively arranged on the two surfaces of the metal strip 10. The first air knife 520 and the second air knife 530 blow and dry the two surfaces of the metal strip 10 to completely remove the water trace residues on the metal strip 10 and ensure the product quality.

[0091] It should be noted that both the first air knife 520 and the second air knife 530 can adopt the existing air knife structure.

[0092] In another embodiment, referring to Figure 2 As shown, the support roller group 100 further includes at least one heat-conducting roller 140. The heat-conducting rollers 140 are arranged at intervals in sequence along the moving direction of the metal strip 10, and are all arranged between the air-cooling section 110 and the water-cooling section 120. The heat-conducting roller 140 is used to support and cool the metal strip 10.

[0093] In this embodiment, the heat-conducting roller 140 is a cooling roller. There is a cavity in the roller body of the heat-conducting roller 140. A circulating coolant is arranged in the cavity. The circulating coolant in the cavity exchanges heat with the metal strip 10 supported on the heat-conducting roller 140, thereby realizing the cooling of the metal strip 10. A coolant circulation component is arranged outside the roller body. Through the coolant circulation component, the circulating coolant in the cavity of the heat-conducting roller 140 exchanges circulation with the circulating coolant in the coolant circulation component outside the cavity, so as to ensure that the temperature of the circulating coolant in the cavity of the heat-conducting roller 140 is low enough, and further ensure the cooling effect of the heat-conducting roller 140.

[0094] Furthermore, the wrap angle between the heat-conducting roller 140 and the metal strip 10 ≥ 45°.

[0095] In this embodiment, the wrap angle is the central angle or arc length corresponding to the contact arc between the metal strip 10 and the heat-conducting roller 140. Since the wrap angle ≥ 45°, it ensures that the contact area between the metal strip 10 and the heat-conducting roller 140 is large enough, thereby strengthening the cooling effect on the metal strip 10.

[0096] In another possible embodiment, a water vapor collection mechanism 600 is further included. The water vapor collection mechanism 600 includes a collection hood 610 and a suction fan 620. The collection hood 610 has a collection inlet 611 and a collection outlet 612. The collection hood 610 is disposed above the cooling water tank 310, and the collection inlet 611 faces the cooling water tank 310. The projection of the cooling water tank 310 facing the collection inlet 611 is located within the collection inlet 611. The suction fan 620 is disposed on the collection outlet 612 to suck the water vapor above the cooling water tank 310 from the collection inlet 611 to the collection outlet 612.

[0097] In this embodiment, as shown in Figure 1 the water vapor above the cooling water tank 310 is collected by the water vapor collection mechanism 600, preventing the water vapor above the cooling water tank 310 from diffusing everywhere and affecting the entire processing site.

[0098] Furthermore, the air outlet end of the suction fan 620 is connected to the cooling water tank 310 through a pipeline, so that the water vapor collected by the water vapor collection mechanism 600 can flow back to the cooling water tank 310 for reuse.

[0099] If some products are not suitable for water cooling, only air cooling and cooling of the heat conduction roller 140 can be performed on the products. At this time, the water in the cooling water tank 310 can be drained, so that the products to be cooled will not get wet when passing through the cooling water tank 310, thereby improving the diversity of products cooled by the cooling device for metal strip of the present application.

[0100] A second aspect of the embodiments of the present application provides a roll coating device, including a drying device for drying the coating on the metal strip, and further including the cooling device for the metal strip according to any of the above embodiments. The air cooling section 110 of the cooling device for the metal strip is used to receive the metal strip with the coating dried by the drying device.

[0101] In this embodiment, the coating on the metal strip is dried by a drying device. After drying, the metal strip is conveyed to the air-cooling section 110 of the cooling device for the metal strip of the present application. After the metal strip 10 is placed on the air-cooling section 110, the air-cooling assembly 200 above the air-cooling section 110 will blow air on the metal strip 10 on the air-cooling section 110 to cool it down, achieving the preliminary cooling of the metal strip 10. Then, under the traction of the traction assembly 400, the metal strip 10 will be pulled from the air-cooling section 110 to the water-cooling section 120. Since the water-cooling section 120 is located inside the cooling water tank 310, the cooling water inside the cooling water tank 310 will soak and cool the metal strip 10 on the water-cooling section 120, achieving the secondary cooling of the metal strip 10. Finally, under the traction of the traction assembly 400, the metal strip 10 will be pulled from the water-cooling section 120 to the outlet section 130. The outlet section 130 can be connected to the next process of the metal strip 10 or directly export the metal strip 10. Since the cooling device for the metal strip of the present application is used to cool the metal strip 10 by blowing air and soaking in sequence, compared with the existing method of only cooling by the fan 212, the cooling effect of the present application on the metal strip 10 is better. Since the water-cooling section 120 is located inside the cooling water tank 310, the metal strip 10 is soaked and cooled by the cooling water inside the cooling water tank 310, thereby improving the cooling effect on the metal plate with a relatively thick thickness, and solving the technical problem of poor cooling effect on the metal plate with a relatively thick thickness in the prior art.

[0102] After considering the specification and the practice disclosed herein, those skilled in the art will readily conceive of other embodiments of the present application. The present application is intended to cover any variations, uses, or adaptations of the present application, which follow the general principles of the present application and include the common general knowledge or conventional technical means in the technical field not disclosed in the present application. The specification and the embodiments are only regarded as exemplary, and the true scope and spirit of the present application are pointed out by the following claims.

[0103] It should be understood that the present application is not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.

Claims

1. A cooling device for a metal strip, characterized in that, Comprising: A support roll group (100) for supporting a metal strip (10), the support roll group (100) including an air-cooling section (110), a water-cooling section (120), and a lead-out section (130) arranged at intervals in sequence; An air-cooling assembly (200) disposed above the air-cooling section (110), the air-cooling assembly (200) being configured to blow air to cool the metal strip (10) on the air-cooling section (110); A water-cooling assembly (300) including a cooling water pool (310), the water-cooling section (120) being located inside the cooling water pool (310), and both the air-cooling section (110) and the lead-out section (130) being located outside the cooling water pool (310). Cooling water is provided inside the cooling water pool (310), and the cooling water is used to soak and cool the metal strip (10) on the water-cooling section (120); A traction assembly (400) for traction the metal strip (10) to sequentially pass through the air-cooling section (110), the water-cooling section (120), and the lead-out section (130).

2. The cooling device for the metal strip according to claim 1, characterized in that The air-cooling assembly (200) includes an air-cooling fan (210) and an air-collecting box (220). The air-collecting box (220) includes a first air inlet (221) and at least one first air outlet (222). The air-cooling fan (210) is communicated with the first air inlet (221) to blow air into the air-collecting box (220). Each of the first air outlets (222) is arranged at intervals along the moving direction of the metal strip (10) on the air-cooling section (110), and each of the first air outlets (222) faces the air-cooling section (110) to blow air to cool the metal strip (10) on the air-cooling section (110).

3. The cooling device for a metal strip according to claim 2, characterized in that, The air-cooling fan (210) includes a housing (211), a fan (212), and a liquid storage barrel (213). A second air outlet (2112) and at least one second air inlet (2111) are provided on the housing (211). The fan (212) is arranged in the housing (211). The air inlet end of the fan (212) is communicated with each of the second air inlets (2111), the air outlet end of the fan (212) is communicated with one side of the second air outlet (2112), the other side of the second air outlet (2112) is communicated with the first air inlet (221). The liquid storage barrel (213) is arranged inside the housing (211), and the opening of the liquid storage barrel (213) faces the air inlet end of the fan (212). A coolant (800) is provided inside the liquid storage barrel (213), and the fan (212) is configured to adsorb the coolant (800) and blow the coolant (800) into water mist and blow it into the air-collecting box (220).

4. The cooling device for metal strip according to claim 1, characterized in that, The air-cooling section (110) includes at least one first roller, the water-cooling section (120) includes at least one second roller, the discharging section (130) includes at least one third roller, and the first rollers, the second rollers and the third rollers are all arranged at intervals in sequence along the moving direction of the metal strip (10). The upper ends of the first rollers are used to support the metal strip (10), the lower ends of the second rollers support the metal strip (10), and the upper ends of the third rollers are used to support the metal strip (10).

5. The cooling device for a metal strip according to claim 1, characterized in that, The water-cooling assembly (300) further includes a cooling tower (320), a first circulating conveying assembly (330) and a second circulating conveying assembly (340). The cooling tower (320) is used to store the cooling water. The cooling tower (320) has a water inlet (3211) and a water outlet (3221). The cooling water tank (310) has a drain port (311) and a water injection port (312). The water inlet (3211) is communicated with the drain port (311) through the first circulating conveying assembly (330), and the water outlet (3221) is communicated with the water injection port (312) through the second circulating conveying assembly (340).

6. The cooling device for metal strip according to claim 1, characterized in that, It further includes a drying assembly (500). The drying assembly (500) is arranged outside the cooling water tank (310) and between the water-cooling section (120) and the discharging section (130). The drying assembly (500) is used to dry the moisture on the metal strip (10) moving from the water-cooling section (120) to the discharging section (130).

7. The cooling device for metal strip according to claim 6, characterized in that, The drying assembly (500) includes a squeezing roller (510), a first air knife (520) and a second air knife (530). The input end of the squeezing roller (510) corresponds to the end of the water-cooling section (120) far from the air-cooling section (110), so that the metal strip (10) output from the water-cooling section (120) moves to the input end of the squeezing roller (510). The output end of the squeezing roller (510) corresponds to the discharging section (130), so that the metal strip (10) output from the output end of the squeezing roller (510) moves to the discharging section (130). The first air knife (520) and the second air knife (530) are both arranged between the squeezing roller (510) and the discharging section (130), and the first air knife (520) faces one side of the metal strip (10), and the second air knife (530) faces the other side of the metal strip (10).

8. The cooling device for a metal strip according to claim 1, characterized in that, The support roller group (100) further includes at least one heat-conducting roller (140). The heat-conducting rollers (140) are arranged at intervals in sequence along the moving direction of the metal strip (10), and are all arranged between the air-cooling section (110) and the water-cooling section (120). The heat-conducting roller (140) is used to support and cool down the metal strip (10).

9. The cooling device for a metal strip according to any one of claims 1 to 8, characterized in that, It further includes a water vapor collection mechanism (600), and the water vapor collection mechanism (600) includes a collection hood (610) and a suction fan (620). The collection hood (610) has a collection inlet (611) and a collection outlet (612). The collection hood (610) is arranged above the cooling water pool (310), and the collection inlet (611) faces the cooling water pool (310). The projection of the cooling water pool (310) facing the collection inlet (611) is located within the collection inlet (611). The suction fan (620) is arranged on the collection outlet (612) so that the water vapor above the cooling water pool (310) is sucked from the collection inlet (611) to the collection outlet (612).

10. A roll coating device, comprising a drying device for drying the coating on the metal strip, characterized in that, It further includes the cooling device for the metal strip according to any one of claims 1 to 9, and the air-cooling section (110) of the cooling device for the metal strip is used to receive the metal strip whose coating has been dried by the drying device.

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