Cooling and drying system for color-coated sheet

Abstract

The utility model relates to the technical field of color-coated sheet processing, and discloses a color-coated sheet cooling and drying system, which is characterized in that an air inlet chamber and an air outlet chamber are arranged on two sides of a water cooling chamber; a plurality of cooling air pipes are uniformly distributed in the water cooling chamber, the cooling air pipes are immersed in water in the water cooling chamber, the air inlet chamber is communicated with the dehumidifier, the dehumidifier is communicated with the fan, the fan is communicated with the wet air gathering pipe, a plurality of wet air branch pipes communicated with the wet air are communicated into the water cooling chamber, and a plurality of air outlet branch pipes communicated with the air outlet chamber are communicated with the water cooling chamber. Through the contact of multiple paths of airflow and water, a more uniform cooling effect is realized, the problems of temperature gradient and non-uniform cooling on the surface of the color-coated sheet are reduced, the direct contact of wet and hot air with the color-coated sheet is avoided, the possibility that water drops remain on the surface of the sheet is reduced, and the smooth proceeding of a subsequent film coating process is facilitated; the humidity in the water cooling chamber can be effectively reduced, the air quality is improved, and corrosion to equipment and the environment is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of color-coated plate processing, and particularly relates to a color-coated plate cooling and drying system. Background Art

[0002] The processing of color-coated plates needs to go through steps such as uncoiling, stitching, cleaning and drying, roll coating, curing, cooling and drying, backing paper, film laminating, slitting, and rewinding in sequence. The color-coated plates cured by the curing furnace need to be cooled and dried by a cooling and drying system before the subsequent film laminating process can be carried out. The cooling and drying system of color-coated plates includes a water-cooling section and a hot air drying section. The hot air drying section uses a hot air dryer to conduct hot air drying on the water-cooled color-coated plates, while the water-cooling section uses an up-and-down spraying method to cool the color-coated plates with water.

[0003] The spraying is carried out in a spraying chamber. However, when the high-temperature color-coated plates after hot curing come into contact with the spray, the heat will be quickly transferred to the water, resulting in the rapid evaporation of the spray and the formation of hot steam. This will form a relatively high temperature gradient in the spraying chamber, which may have an adverse impact on the surface quality of the color-coated plates. Spray cooling may cause water droplets to remain on the surface of the color-coated plates, and these water droplets may have an adverse impact on subsequent processes, such as affecting the bonding effect in the film laminating process. Spray water cooling may cause the water to evaporate into the surrounding environment, increasing the air humidity and affecting the equipment and the working environment. Content of the Utility Model

[0004] The present invention aims to solve the technical problem in the above-mentioned prior art that when high-temperature color-coated plates come into contact with the spray, the heat will be quickly transferred to the water, resulting in the rapid evaporation of the spray to form hot gas, and the water droplets will accumulate and remain on the surface of the color-coated plates, thus affecting the quality of the color-coated plates.

[0005] To achieve the above object, the utility model provides the following technical solutions:

[0006] A color-coated plate cooling and drying system includes a water-cooling chamber, a hot air dryer, and a conveyor located between the water-cooling chamber and the hot air dryer and used for conveying the color-coated plates; an air inlet chamber and an air outlet chamber are arranged on both sides of the water-cooling chamber;

[0007] A number of cooling air pipes with both ends respectively connected to the air inlet chamber and the air outlet chamber are evenly distributed in the lower half of the water-cooling chamber. The water in the water-cooling chamber submerges the cooling air pipes. The air inlet chamber is connected to a dehumidifier through a pipeline, the dehumidifier is connected to a fan through a pipeline, the fan is connected to a wet air collecting pipe through a pipeline, a number of wet air branch pipes connected to the wet air collecting pipe are connected to the water-cooling chamber, and a number of air outlet branch pipes connected to the air outlet chamber are connected to the water-cooling chamber.

[0008] The humid and hot air generated by the contact spray of the high-temperature color-coated plate enters the humid air collecting pipe and the dehumidifier in turn through the branch humid air pipes. After being dehumidified by the dehumidifier, it enters the intake chamber, and then is divided into multiple paths by the cooling air pipes in the water in the water-cooling chamber. The air flow exchanges heat with the water, turns into cool air, and then enters the water-cooling chamber through the outlet chamber and the outlet branch pipes. This cycle is repeated to remove the humid and hot air in the water-cooling chamber and reduce the formation of water droplets remaining on the surface of the color-coated plate;

[0009] By allowing the multi-path air flow to contact the water, a more uniform cooling effect is achieved, reducing the temperature gradient and uneven cooling problems on the surface of the color-coated plate, avoiding the direct contact between the humid and hot air and the color-coated plate, reducing the possibility of water droplets remaining on the surface of the plate, which is beneficial to the smooth progress of the subsequent film laminating process. By dehumidifying the humid and hot air with a dehumidifier, the humidity in the water-cooling chamber can be effectively reduced, the air quality can be improved, and the corrosion of equipment and the environment can be reduced. The design of the cooling air pipes increases the heat exchange area in the water-cooling chamber, improves the cooling efficiency, and shortens the cooling time;

[0010] The design of this cooling and drying system improves the cooling efficiency and the surface quality of the color-coated plate, reduces the water droplet residue and environmental humidity at the same time, optimizes the cooling process of the color-coated plate, and improves the product quality.

[0011] Preferably, a transparent cover plate is provided at the top of the water-cooling chamber.

[0012] The transparent cover plate enables the operator to clearly observe the internal situation of the water-cooling chamber, facilitating the monitoring of the cooling process and the operating state of the equipment.

[0013] Preferably, feeding ports and discharging ports for the passage of the color-coated plate are provided on both sides of the water-cooling chamber.

[0014] The design of the feeding ports and discharging ports facilitates the smooth entry and exit of the color-coated plate, improving the smoothness of the production line.

[0015] Preferably, a number of conveying rollers for the conveyance of the color-coated plate are arranged at equal distances in the water-cooling chamber. The pulley fixedly provided at the input end of the conveying roller is engaged with a belt. The belt and the pulley are both located outside the water-cooling chamber and are protected by a protective cover fixed outside the water-cooling chamber. A driving motor for driving one of the conveying rollers to rotate is fixedly provided on the protective cover.

[0016] Preferably, a number of water inlet branch pipes are arranged at the upper and lower ends of the conveying rollers in the water-cooling chamber. The water inlet branch pipes penetrate through the water-cooling chamber and are connected to the water inlet main pipe outside the water-cooling chamber. A number of spray heads are evenly distributed on the water inlet branch pipes.

[0017] The spray heads on the water inlet branch pipes can achieve uniform spraying on the color-coated plate, improving the cooling efficiency.

[0018] The drive motor drives the active conveying roller to rotate, driving the active pulley to rotate, and then driving the belt transmission, causing all the conveying rollers in the water-cooling chamber to rotate, conveying the color-coated board. Spray heads are arranged at both the upper and lower ends of the conveying rollers, spraying on both the upper and lower sides, which can evenly cool the color-coated board in the water-cooling chamber and improve the cooling effect.

[0019] Preferably, a water inlet pipe and a water outlet pipe are provided on the water-cooling chamber, and the water inlet pipe and the water outlet pipe are connected to the water circulation cooling system.

[0020] With the coordinated design of the water inlet pipe, the water outlet pipe and the water circulation cooling system, the circulation of the cooling water in the water-cooling chamber enables the water-cooling chamber to always have cold water for heat exchange with the cooling gas pipes.

[0021] Compared with the prior art, the technical effects and advantages of the present utility model are as follows: The color-coated board cooling and drying system conveys the color-coated board for orderly cooling and drying through the conveyor between the water-cooling chamber and the hot air dryer. The water-cooling chamber is the main place for cooling, and cooling gas pipes are evenly distributed in the lower half. One end of these cooling gas pipes is connected to the air inlet chamber, and the other end is connected to the air outlet chamber. When hot air passes through these cooling gas pipes, they transfer heat to the water, thereby increasing the water temperature and taking away the heat in the hot air to achieve the cooling effect of the water-cooling chamber.

[0022] The fan is connected to the wet air collecting pipe through a pipeline, the dehumidifier is connected to the fan through a pipeline, and the air inlet chamber is connected to the dehumidifier through a pipeline for introducing dehumidified air to improve the dryness in the water-cooling chamber. The dehumidified and heat-exchanged air flow re-enters the water-cooling chamber through the air outlet chamber, forming a dehumidification cycle to ensure that the air humidity in the water-cooling chamber is controlled within an appropriate range. The wet air branch pipes guide the dehumidified air into the water-cooling chamber to prevent water droplets from condensing on the color-coated board during the cooling process in the water-cooling chamber;

[0023] Through the cooling gas pipes in the water-cooling chamber, uniform cooling of the water-cooling chamber is achieved, avoiding problems such as temperature gradient and uneven cooling, preventing the direct contact of hot and humid air with the color-coated board, and reducing the possibility of water droplets remaining on the surface of the board. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of the present utility model;

[0025] Figure 2 is a schematic structural diagram of the first perspective of the water-cooling chamber of the present utility model;

[0026] Figure 3 is a schematic structural diagram of the second perspective of the water-cooling chamber of the present utility model;

[0027] Figure 4 is a left sectional view of the water-cooling chamber of the present utility model.

[0028] In the figure: 100, water-cooling chamber; 200, hot air dryer; 300, conveyor; 400, color-coated board; 101, air inlet chamber; 102, air outlet chamber; 103, cooling air pipe; 104, dehumidifier; 105, fan; 106, wet air collecting pipe; 107, wet air branch pipe; 108, transparent cover plate; 109, feed inlet; 110, discharge outlet; 111, conveying roller; 112, pulley; 113, belt; 114, protective cover; 115, driving motor; 116, water inlet branch pipe; 117, water inlet main pipe; 118, spray head; 119, water inlet pipe; 120, water outlet pipe; 121, air outlet branch pipe. Specific embodiments

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] The following is a further detailed description in conjunction with the attached Figures 1-4 This application will be further described in detail.

[0031] The embodiment of this application discloses a color-coated board cooling and drying system, including a water-cooling chamber 100, a hot air dryer 200, and a conveyor 300 located between the water-cooling chamber 100 and the hot air dryer 200 and used for conveying the color-coated board 400; a transparent cover plate 108 is provided on the top of the water-cooling chamber 100. The transparent cover plate 108 enables the operator to clearly observe the situation inside the water-cooling chamber 100, facilitating the monitoring of the cooling process and the operation status of the equipment. Feed inlets 109 and discharge outlets 110 for the passage of the color-coated board 400 are provided on both sides of the water-cooling chamber 100. The design of the feed inlets 109 and discharge outlets 110 facilitates the smooth entry and exit of the color-coated board 400, improving the smoothness of the production line.

[0032] Air inlet chambers 101 and air outlet chambers 102 are provided on both sides of the water-cooling chamber 100; a number of cooling air pipes 103 with both ends respectively connected to the air inlet chamber 101 and the air outlet chamber 102 are evenly distributed in the lower half of the water-cooling chamber 100, and the water in the water-cooling chamber 100 submerges the cooling air pipes 103. The air inlet chamber 101 is connected to the dehumidifier 104 through a pipeline, the dehumidifier 104 is connected to the fan 105 through a pipeline, the fan 105 is connected to the wet air collecting pipe 106 through a pipeline, a number of wet air branch pipes 107 connected to the wet air are connected into the water-cooling chamber, and a number of air outlet branch pipes 121 connected to the air outlet chamber 102 are connected to the water-cooling chamber 100.

[0033] Cooling gas pipes 103 are evenly distributed in the lower half of the water-cooling chamber 100. They transfer the heat of the air in the water cooling of the pre-painted sheet 400 to water to achieve the cooling effect. The outlet branch pipes 121 guide the dehumidified air into the water-cooling chamber 100 to achieve drying.

[0034] The hot and humid gas generated by the contact spray of the high-temperature pre-painted sheet 400 enters the wet air collecting pipe 106 and the dehumidifier 104 in sequence through the wet air branch pipe 107. After being dehumidified by the dehumidifier 104, the dry air enters the intake chamber 101, and then is divided into multiple paths through the cooling gas pipes 103. The air flow exchanges heat with water, becomes cool air, and then enters the water-cooling chamber 100 through the outlet chamber 102 and the outlet branch pipes 121, forming a reciprocating cycle. By making the multiple air flows contact water, a more uniform cooling effect is achieved, reducing the temperature gradient and uneven cooling problems on the surface of the pre-painted sheet 400. At the same time, the direct contact between the hot and humid gas and the pre-painted sheet 400 is avoided, reducing the possibility of water droplets remaining on the surface of the sheet.

[0035] A number of conveying rollers 111 for cooperating with the conveyance of the pre-painted sheet 400 are arranged at equal distances in the water-cooling chamber 100. The pulley 112 fixedly arranged at the input end of the conveying roller 111 meshes with the belt 113. The belt 113 and the pulley 112 are both located outside the water-cooling chamber 100 and are protected by a protective cover 114 fixed outside the water-cooling chamber 100. A driving motor 115 for driving one of the conveying rollers 111 to rotate is fixedly arranged on the protective cover 114. A number of water inlet branch pipes 116 are arranged above and below the conveying rollers 111 in the water-cooling chamber 100. The water inlet branch pipes 116 penetrate through the water-cooling chamber 100 and are connected to a water inlet main pipe 117 outside the water-cooling chamber 100. A number of spray heads 118 are evenly distributed on the water inlet branch pipes 116.

[0036] The spray heads 118 on the water inlet branch pipes 116 can achieve uniform spraying on the pre-painted sheet 400, improving the cooling efficiency.

[0037] The driving motor 115 drives the driving conveying roller 111 to rotate, drives the driving pulley 112 to rotate, and further drives the belt 113 to transmit, so that all the conveying rollers 111 in the water-cooling chamber 100 rotate to convey the pre-painted sheet 400. Spray heads 118 are arranged at both the upper and lower ends of the conveying roller 111, and spraying on both the upper and lower sides can enable the pre-painted sheet 400 to be evenly cooled in the water-cooling chamber 100, improving the cooling effect.

[0038] A water inlet pipe 119 and a water outlet pipe 120 are arranged on the water-cooling chamber 100. The water inlet pipe 119 and the water outlet pipe 120 are connected to the water circulation cooling system. With the coordinated design of the water inlet pipe 119, the water outlet pipe 120 and the water circulation cooling system, the circulation of the cooling water in the water-cooling chamber enables the water-cooling chamber to always have cold water for heat exchange with the cooling gas pipes 103.

[0039] For this color-coated board cooling and drying system, the humid and hot air generated by the contact spraying of the high-temperature color-coated board 400 enters the wet air collecting pipe 106 and the dehumidifier 104 successively through the wet air branch pipe 107. After being dehumidified by the dehumidifier 104, it enters the intake chamber 101, and then is divided into multiple paths by the cooling air pipes 103 in the water in the water cooling chamber 100. The air flow exchanges heat with the water, becomes cool air, and then enters the water cooling chamber 100 through the air outlet chamber 102 and the air outlet branch pipe 121. This cycle is repeated to remove the humid and hot air in the water cooling chamber 100 and reduce the formation of water droplets remaining on the surface of the color-coated board 400;

[0040] By allowing the multi-path air flow to contact the water, a more uniform cooling effect is achieved, reducing the temperature gradient and uneven cooling problems on the surface of the color-coated board 400, avoiding the direct contact of the humid and hot air with the color-coated board 400, reducing the possibility of water droplets remaining on the surface of the board, which is beneficial to the smooth progress of the subsequent film laminating process. By dehumidifying the humid and hot air with the dehumidifier 104, the humidity in the water cooling chamber 100 can be effectively reduced, the air quality can be improved, and the corrosion of the equipment and the environment can be reduced. The design of the cooling air pipes 103 increases the heat exchange area in the water cooling chamber 100, improves the cooling efficiency, and shortens the cooling time;

[0041] The design of this cooling and drying system improves the cooling efficiency and the surface quality of the color-coated board 400, while reducing the water droplet residue and the environmental humidity, optimizing the cooling process of the color-coated board 400, and improving the product quality.

[0042] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A color-coated plate cooling and drying system, comprising a water-cooling chamber (100), a hot air dryer (200), and a conveyor (300) located between the water-cooling chamber (100) and the hot air dryer (200) and used for conveying the color-coated plate (400); characterized in that: On both sides of the water-cooled chamber (100), there are an intake chamber (101) and an outlet chamber (102); In the lower half of the water-cooled chamber (100), a number of cooling air pipes (103) with both ends respectively connected to the intake chamber (101) and the outlet chamber (102) are evenly distributed. The water in the water-cooled chamber (100) submerges the cooling air pipes (103). The intake chamber (101) is connected to a dehumidifier (104) through a pipe, the dehumidifier (104) is connected to a fan (105) through a pipe, the fan (105) is connected to a wet air manifold (106) through a pipe, a number of wet air branch pipes (107) connected to the upper part of the wet air are connected into the water-cooled chamber, and a number of outlet branch pipes (121) connected to the outlet chamber (102) are connected to the water-cooled chamber (100).

2. The color-coated board cooling and drying system according to claim 1, characterized in that: A transparent cover plate (108) is provided at the top of the water-cooled chamber (100).

3. The color-coated sheet cooling and drying system according to claim 1, characterized in that: On both sides of the water-cooled chamber (100), there are a feed inlet (109) and a discharge outlet (110) for the colored coated plate (400) to pass through.

4. A color-coated plate cooling and drying system according to claim 1, characterized in that: Inside the water-cooled chamber (100), a number of conveying rollers (111) for conveying the colored coated plate (400) are arranged at equal distances. The pulley (112) fixedly arranged at the input end of the conveying roller (111) meshes with a belt (113). The belt (113) and the pulley (112) are both located outside the water-cooled chamber (100) and are protected by a protective cover (114) fixed outside the water-cooled chamber (100). A driving motor (115) for driving one of the conveying rollers (111) to rotate is fixedly arranged on the protective cover (114).

5. A color-coated board cooling and drying system according to claim 4, characterized in that: Inside the water-cooled chamber (100) and at the upper and lower ends of the conveying rollers (111), a number of water inlet branch pipes (116) are arranged. The water inlet branch pipes (116) penetrate through the water-cooled chamber (100) and are connected to a water inlet main pipe (117) outside the water-cooled chamber (100). A number of spray nozzles (118) are evenly distributed on the water inlet branch pipes (116).

6. The color-coated plate cooling and drying system according to claim 1, characterized in that: The water-cooled chamber (100) is provided with a water inlet pipe (119) and a water outlet pipe (120), and the water inlet pipe (119) and the water outlet pipe (120) are connected to a water circulation cooling system.

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