Cooling device for color coating production line

Abstract

The utility model relates to the technical field of cooling devices, and discloses a cooling device for a color coating production line, the cooling device comprises a cooling box, the cooling box comprises a cooling box body and a limiting part arranged in the cooling box body, the two opposite sides of the cooling box body are provided with a feeding port and a discharging port respectively, and the position, close to the feeding port, of the cooling box body is provided with an air outlet; an air inlet is formed in the position, close to the discharging opening, of the cooling box body; the circulating cooling assembly comprises a water vapor supply part, air pipes communicated with the water vapor supply part and a fan arranged in the middle of the air pipes, the air pipes comprise the first air pipe and the second air pipe, the air inlet end of the first air pipe is communicated with the water vapor supply part, and the air outlet end of the first air pipe is communicated with the air inlet; the air inlet end of the second air pipe is communicated with the air outlet, and the air outlet end of the second air pipe is communicated with the water vapor supply part. The cooling device has the effect of reducing the possibility of deformation of the steel coil on the premise of ensuring the cooling effect of the steel coil.

Description

Technical Field

[0001] The present application relates to the technical field of cooling devices, and in particular to a cooling device for a color coating production line. Background Art

[0002] The color coating production line is a complete set of production equipment that coats the surface of steel coils with multiple layers of organic coatings (such as modified resin (SMP), high weather-resistant polyester (HDP), polyvinylidene fluoride (PVDF) and other coatings) by continuous roller coating after the surface of the steel coils has been degreased, phosphated and passivated, thereby forming a new set of functional panels.

[0003] The main equipment of the color coating production line includes unwinder, stitching machine (welder), material storage machine, degreasing and cleaning unit, roller coater, curing furnace, shearing machine, coiler, etc. After the steel coil is coated by the roller coater, the steel coil enters the curing furnace, and the curing furnace is used to dry the steel coil at high temperature. After the steel coil is dried, in order to facilitate the next step of the steel coil, it is generally necessary to cool down the heated and dried steel coil.

[0004] At present, when cooling the steel coil, water is usually sprayed directly on the steel coil to cool the steel coil. However, the temperature of the steel coil just out of the curing furnace is relatively high, and the temperature difference between the steel coil and the water is relatively large. When water is sprayed directly on the steel coil, the steel coil has the defect of being easily deformed. Utility Model Content

[0005] In order to reduce the possibility of deformation of the steel coil while ensuring the cooling effect of the steel coil, the present application provides a cooling device for a color coating production line.

[0006] The present application provides a cooling device for a color coating production line adopts the following technical solution:

[0007] A cooling device for a color coating production line, the cooling device is used to cool down a steel coil after heating and drying, comprising:

[0008] A cooling box, the cooling box comprising a cooling box body and a limiting portion installed inside the cooling box body, a feed port and a discharge port are respectively provided on opposite sides of the cooling box body, and an air outlet is provided at a position of the cooling box body close to the feed port, and an air inlet is provided at a position of the cooling box body close to the discharge port;

[0009] A circulating cooling component, the circulating cooling component comprising a water vapor supply part, an air duct connected to the water vapor supply part, and a fan installed in the middle of the air duct, the air duct comprising a first air duct and a second air duct, the air inlet end of the first air duct being connected to the water vapor supply part, the air outlet end of the first air duct being connected to the air inlet, the air inlet end of the second air duct being connected to the air outlet, and the air outlet end of the second air duct being connected to the water vapor supply part;

[0010] When the steel coil passes through the cooling box through the feed port and the discharge port, the limiting portion inside the cooling box guides and supports the steel coil. At the same time, the fan passes the airflow with water vapor inside the water vapor supply portion from the air inlet into the cooling box through the air duct, and discharges it through the air outlet.

[0011] Optionally, the cooling box includes a middle frame and a deflector mounted on the middle frame, two deflectors are provided, the two deflectors clamp the middle frame, and the middle frame and the two deflectors form a cooling area.

[0012] Optionally, the deflector cover includes an arc-shaped cover body and a deflector plate installed on the inner wall of the cover body.

[0013] Optionally, the guide plate is arranged at an angle.

[0014] Optionally, a plurality of the limiting parts are arranged along the moving direction of the steel coil, and each of the limiting parts includes a first limiting member and a second limiting member rotatably mounted on the cooling box body, and the first limiting member and the second limiting member clamp the steel coil.

[0015] Optionally, the water vapor supply unit includes a water vapor box body and a plurality of heat sinks installed on the top of the inner wall of the water vapor box body, the water vapor box body is filled with water, and the bottom of the heat sink is placed in the water.

[0016] Optionally, the air outlet end of the second air duct is located below the liquid level inside the water vapor box.

[0017] Optionally, a drain pipe is installed between the cooling box body and the water vapor box body, one end of the drain pipe is connected to the interior of the cooling box body through the bottom of the cooling box body, and the other end of the drain pipe is connected to the water vapor box body.

[0018] In summary, the present application includes at least one of the following beneficial technical effects:

[0019] 1. When the steel coil moves inside the cooling box through the feed port and the discharge port, the limiter supports the steel coil. At the same time, the fan passes the airflow with water vapor inside the water vapor box through the first air duct through the air inlet into the cooling box, and discharges it from the air outlet of the cooling box. When the airflow with water vapor moves inside the cooling box, the steel coil is heat exchanged. Since the temperature of the steel coil near the discharge port is lower than that of the steel coil near the feed port, the airflow containing water vapor gradually heats up during the movement, which facilitates the gradual heat exchange of the steel coil and reduces the possibility of deformation of the steel coil due to excessive cooling.

[0020] 2. When the steel strip moves inside the cooling box, the first limiter and the second limiter clamp the steel strip, further reducing the possibility of deformation of the steel strip;

[0021] 3. The second air duct flows the air flow containing water vapor inside the cooling box into the water inside the water vapor box, and the high-temperature gas inside the second air duct is cooled by heat exchange through the water inside the water vapor box, thereby facilitating the acceleration of the convenience of producing water vapor inside the water vapor box and reducing the possibility of the high-temperature gas directly passing through the first air duct and entering the cooling box again. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a partial processing flow chart of the steel coil in the color coating production line in the embodiment of the present application.

[0023] Figure 2 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0024] Figure 3 It is a schematic diagram showing the positional relationship between the middle frame and the limiting portion in the embodiment of the present application.

[0025] Figure 4 It is a schematic diagram of the air deflector structure in the embodiment of the present application.

[0026] Description of reference numerals:

[0027] 1. Cooling box; 11. Cooling box body; 111. Middle frame; 1111. Feed inlet; 1112. Feed outlet; 112. Air guide cover; 1121. Cover body; 1122. Air guide plate; 1123. Air inlet; 1124. Air outlet; 12. Limiting part; 121. First limiting part; 122. Second limiting part; 2. Circulating cooling assembly; 21. Water vapor supply part; 211. Water vapor box body; 22. Air duct; 221. First air duct; 222. Second air duct; 23. Fan. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-Figure 4 This application is described in further detail.

[0029] The embodiment of the present application discloses a cooling device for a color coating production line.

[0030] A cooling device for a color coating production line includes a cooling box 1 and a circulating cooling assembly 2. The cooling box 1 includes a cooling box body 11 and a limiting portion 12. The limiting portion 12 is installed inside the cooling box body 11, and the limiting portion 12 is used to support and limit the steel coil inside the cooling box body 11. The circulating cooling assembly 2 is connected to the inside of the cooling box body 11, and the circulating cooling box body 11 is used to perform step-by-step heat exchange and cooling on the steel coil inside the cooling box body 11.

[0031] The cooling box body 11 includes a middle frame 111 and a deflector 112 .

[0032] The middle frame 111 is arranged in a ring shape, the length direction of the middle frame 111 is consistent with the moving direction of the steel coil, and the two opposite side walls of the middle frame 111 in the width direction are respectively provided with a feed port 1111 and a discharge port 1112.

[0033] Two air guide covers 112 are provided, and the two air guide covers 112 clamp the middle frame 111. The air guide cover 112 includes a cover body 1121 and an air guide plate 1122.

[0034] The cover body 1121 is arranged in an arc shape, and the arc center of the cover body 1121 is located at a position of the cover body 1121 close to the middle frame 111. The length direction of the cover body 1121 is consistent with the length direction of the middle frame 111, and the two cover bodies 1121 and the middle frame 111 form a cooling area. The side of the cover body 1121 and the middle frame 111 are detachably fixedly connected by screws to improve the convenience of connecting the middle frame 111 and the air guide cover 112. The cover body 1121 is provided with an air outlet 1124 at a position close to the feed port 1111 on the middle frame 111, and the cover body 1121 is provided with an air inlet 1123 at a position close to the discharge port 1112 on the middle frame 111.

[0035] The guide plate 1122 is located on one side of the cover body 1121 close to the middle frame 111. A plurality of guide plates 1122 are arranged along the length direction of the cover body 1121, and the plurality of guide plates 1122 are arranged obliquely. When the airflow containing water vapor enters the interior of the cooling box 11, the guide plate 1122 guides the airflow containing water vapor so that the airflow containing water vapor moves in a spiral manner, thereby extending the heat exchange time between the airflow containing water vapor and the steel strip, and improving the heat exchange effect on the steel strip.

[0036] There are a plurality of limit parts 12, and the plurality of limit parts 12 are distributed along the length direction of the middle frame 111. The limit part 12 includes a first limit piece 121 and a second limit piece 122, and the second limit piece 122 is located below the first limit piece 121, and the first limit piece 121 and the second limit piece 122 clamp the steel strip. The first limit piece 121 and the second limit piece 122 are both rotating rollers, and the length direction of the rotating roller is consistent with the width direction of the middle frame 111, and the end of the rotating roller is rotated and matched with the adjacent side wall of the middle frame 111 in the length direction, and the outer peripheral surface of the rotating roller is in contact with the steel strip.

[0037] When the steel coil moves inside the middle frame 111 through the feed port 1111 and the discharge port 1112 on the middle frame 111, the second limit member 122 supports the steel coil to reduce the possibility of deformation under the action of gravity during movement. At the same time, since the rotating rollers rotate in coordination with the side walls of the middle frame 111 in the length direction, the movement resistance of the steel coil is reduced, thereby improving the convenience of movement of the steel coil.

[0038] When the steel strip is cooled by heat exchange, the first limiter 121 and the second limiter 122 cooperate with each other to clamp and limit the steel strip, thereby reducing the possibility of deformation of the steel strip during the cooling process.

[0039] The circulating cooling assembly 2 includes a water vapor supply unit 21 , an air duct 22 and a fan 23 .

[0040] The water vapor supply unit 21 includes a water vapor box 211 and a heat sink.

[0041] The top of the water vapor box 211 is provided with an arc surface, and the arc center of the arc surface faces upward, and the arc of the arc surface is consistent with the arc of the cover 1121. The water vapor box 211 is located at the bottom of the cooling box 11, and the cover 1121 located below fits the arc surface on the water vapor box 211, and the cover 1121 and the water vapor box 211 are fixedly connected by a bolt and nut assembly. The water vapor box 211 is filled with water.

[0042] A plurality of heat sinks are provided, each heat sink is vertically arranged, the top of each heat sink is welded to the top of the inner wall of the water vapor box 211 , and the bottom of each heat sink is located below the liquid level inside the water vapor box 211 .

[0043] The heat inside the cooling area is transferred to the heat sink through the cover 1121 and the wall of the water vapor box 211, and the heat sink is used to exchange heat and cool the water inside the water vapor box 211, thereby reducing the temperature on the cover 1121.

[0044] A drain pipe is installed between the cover 1121 near the water vapor box 211 and the water vapor box 211. One end of the drain pipe is connected to the cooling box 11 through the bottom of the cover 1121, and the other end of the drain pipe is connected to the inside of the water vapor box 211. Each guide plate 1122 is provided with a guide hole near the inner wall of the cover 1121 to facilitate the water condensed on the cover 1121 to enter the inside of the water vapor box 211 through the drain pipe.

[0045] The air duct 22 includes a first air duct 221 and a second air duct 222 .

[0046] The air inlet end of the first air duct 221 is connected to the interior of the water vapor box 211, and the air inlet end of the first air duct 221 is higher than the liquid level inside the water vapor box 211, and the air outlet end of the first air duct 221 is connected to the air inlet 1123 on the cover 1121. The air inlet end of the second air duct 222 is connected to the air outlet 1124 on the cover 1121, and the air outlet end of the second air duct 222 is connected to the interior of the water vapor box 211, and the air outlet end of the second air duct 222 is located below the liquid level inside the water vapor box 211.

[0047] The fan 23 is installed in the middle of the first air duct 221 , and the fan 23 and the first air duct 221 are communicated.

[0048] The fan 23 circulates the air flow containing water vapor in the water vapor box 211 among the water vapor box 211 , the first air duct 221 , the cooling box 11 , the second air duct 222 and the water vapor box 211 .

[0049] The implementation principle of a cooling device for a color coating production line in an embodiment of the present application is as follows: the steel coil moves inside the middle frame 111 through the feed port 1111 and the discharge port 1112 on the middle frame 111, and during the movement of the steel coil inside the middle frame 111, the first limit member 121 and the second limit member 122 cooperate with each other to clamp and limit the steel coil, thereby reducing the possibility of deformation of the steel coil during the cooling process; during the movement of the steel coil, the fan 23 transports the air flow with water vapor inside the water vapor box 211 from the first air duct 221 to the inside of the cooling box 11, and transports it again to the inside of the water vapor box 211 from the second air duct 222, thereby forming a cycle. When the airflow containing water vapor inside the first air duct 221 contacts the steel coil located at the discharge port 1112, the airflow containing water vapor exchanges heat and cools the steel coil, thereby further reducing the temperature of the steel coil. At the same time, the temperature of the airflow containing water vapor gradually rises during the process of moving from the air inlet to the air outlet, thereby reducing the temperature difference with the steel coil, thereby reducing the possibility of deformation of the steel coil when the steel coil is cooled.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A cooling device for a color coating production line, the cooling device is used to cool down a steel coil after heating and drying, characterized in that: include; A cooling box (1), the cooling box (1) comprising a cooling box body (11) and a limiting portion (12) installed inside the cooling box body (11), a feed inlet (1111) and a discharge port (1112) are respectively provided on opposite sides of the cooling box body (11), and an air outlet (1124) is provided at a position of the cooling box body (11) close to the feed inlet (1111), and an air inlet (1123) is provided at a position of the cooling box body (11) close to the discharge port (1112); A circulating cooling component (2), the circulating cooling component (2) comprising a water vapor supply part (21), an air duct (22) connected to the water vapor supply part (21), and a fan (23) installed in the middle of the air duct (22), the air duct (22) comprising a first air duct (221) and a second air duct (222), the air inlet end of the first air duct (221) being connected to the water vapor supply part (21), the air outlet end of the first air duct (221) being connected to the air inlet (1123), the air inlet end of the second air duct (222) being connected to the air outlet (1124), and the air outlet end of the second air duct (222) being connected to the water vapor supply part (21); When the steel coil passes through the cooling box (11) through the feed port (1111) and the discharge port (1112), the limiting portion (12) inside the cooling box (11) guides and supports the steel coil. At the same time, the fan (23) passes the air flow containing water vapor inside the water vapor supply portion (21) through the air duct (22) from the air inlet (1123) into the interior of the cooling box (11), and discharges it through the air outlet (1124).

2. A cooling device for a color coating production line according to claim 1, characterized in that: The cooling box (11) comprises a middle frame (111) and a deflector (112) mounted on the middle frame (111); two deflectors (112) are provided, and the two deflectors (112) clamp the middle frame (111); the middle frame (111) and the two deflectors (112) form a cooling area.

3. A cooling device for a color coating production line according to claim 2, characterized in that: The air guide cover (112) comprises an arc-shaped cover body (1121) and an air guide plate (1122) mounted on the inner wall of the cover body (1121).

4. The cooling device for a color coating production line according to claim 3 is characterized in that: The guide plate (1122) is arranged at an angle.

5. The cooling device for a color coating production line according to claim 1, characterized in that: A plurality of the limiting parts (12) are arranged along the moving direction of the steel strip, and each of the limiting parts (12) comprises a first limiting member (121) and a second limiting member (122) rotatably mounted on the cooling box (11), and the first limiting member (121) and the second limiting member (122) clamp the steel strip.

6. The cooling device for a color coating production line according to claim 1, characterized in that: The water vapor supply part (21) comprises a water vapor box (211) and a plurality of heat sinks installed on the top of the inner wall of the water vapor box (211); the water vapor box (211) is filled with water, and the bottom of the heat sink is placed in the water.

7. A cooling device for a color coating production line according to claim 6, characterized in that: The air outlet end of the second air duct (222) is located below the liquid surface inside the water vapor box (211).

8. The cooling device for a color coating production line according to claim 7, characterized in that: A drain pipe is provided between the cooling box (11) and the water vapor box (211); one end of the drain pipe is connected to the interior of the cooling box (11) through the bottom of the cooling box (11); and the other end of the drain pipe is connected to the water vapor box (211).

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