Hot-rolled plate cooling and coiling device and method

Abstract

The present application relates to the technical field of metal processing, in particular to a hot-rolled plate cooling and coiling device and method, which comprises a base plate, a first conveying roller mechanism, a second conveying roller mechanism, a water spraying cooling mechanism, a lifting mechanism, a coiler, a first support, a first air knife, a second support and a second air knife; when the strip steel passes through the water spraying cooling mechanism, the water spraying cooling mechanism is started to spray water on the upper and lower surfaces of the strip steel from the top and bottom; when the strip steel passes through the first air knife, the first air knife is inclined upward to blow high-pressure air flow on the bottom of the strip steel to remove the residual cooling water adhered to the lower surface of the strip steel; when the strip steel passes through the second air knife, the second air knife is inclined downward to blow high-pressure air flow on the top of the strip steel to remove the residual cooling water adhered to the upper surface of the strip steel; the strip steel dried by blowing is introduced into the coiler, and the strip steel is coiled into a steel coil by the coiler; thus, the problem that the moisture on the surface of the strip steel is not removed completely before coiling is solved.

Description

Technical Field

[0001] This invention relates to the field of metal processing technology, and in particular to a device and method for cooling and coiling hot-rolled plates. Background Technology

[0002] Hot-rolled steel is a general term for hot-rolled steel plates and strips. Its production process includes slab heating, rough rolling, finish rolling, and laminar flow cooling. It adopts a headless rolling process to achieve high-efficiency and energy-saving production, and applies a new super-controlled rolling process to improve the precision of plate shape control. By changing the metal grain structure and removing internal defects through high-temperature rolling, the finished product can be divided into straight coils, slit coils, and flat coils.

[0003] Prior art (CN217017986U) discloses a hot-rolled steel strip cooling and coiling device, including a cooling and conveying device and a coiling device. The cooling and conveying device consists of a conveying mechanism and a cooling mechanism. At least one cooling mechanism is provided and arranged parallel to each other on the conveying mechanism. The conveying mechanism includes a conveying frame, conveying cooling rollers, and a first drive motor. The cooling mechanism includes a cold water tank, a pressurizing pump, cooling pipes, and high-pressure nozzles. After the cooling water sprayed by the cooling mechanism cools the steel strip, it flows into a water collection tank. Metal cooling plates cool the wastewater, and the metal cooling plates are respectively equipped with... The water leakage hole allows water cooled by the metal cooling plate to be filtered through the filter holes into the cold water tank, improving water resource utilization and making it more environmentally friendly. High-pressure nozzles spray water onto the strip surface for cooling, and a pressurized pump adjusts the impact force of the falling water column to break through the water layer and steam film on the strip surface, improving cooling efficiency. By adjusting the angle of the universal joint, the angle of the pressure roller is tilted, and in conjunction with the guide roller and the coiling roller, the curvature of the strip is adjusted at different angles to complete the coiling operation, effectively improving work efficiency, increasing flexibility, expanding the scope of application, and ensuring continuous operation.

[0004] Using the above method, after the strip is cooled by spraying water, although most of the cooling water will fall into the water collection tank, a small amount of cooling water will still adhere to the upper and lower surfaces of the strip and not be cleaned. If it is directly coiled, it will easily cause rust on the surface of the strip and affect the product quality. Summary of the Invention

[0005] The purpose of this invention is to provide a device and method for cooling and coiling hot-rolled steel strip, which aims to solve the problem of coiling the strip before the surface moisture is completely removed.

[0006] To achieve the above objectives, the present invention provides a hot-rolled plate cooling and coiling device, comprising a base plate, a first conveying roller mechanism, a second conveying roller mechanism, a water spray cooling mechanism, a lifting mechanism, a coiler, a first support, a first air knife, a second support, and a second air knife; The first conveyor roller mechanism is disposed on the top of the base plate; the second conveyor roller mechanism is disposed on the top of the base plate; the water spray cooling mechanism is disposed on the top of the base plate and located between the first conveyor roller mechanism and the second conveyor roller mechanism, for spraying water onto the strip steel from the top and bottom; the lifting mechanism is disposed on the top of the base plate and located on the side of the second conveyor roller mechanism away from the water spray cooling mechanism; the coiler is disposed on top of the lifting mechanism; The first bracket is fixedly installed on the top of the base plate and located on the side of the second conveying roller mechanism away from the water spray cooling mechanism; the first air knife is fixedly installed on the first bracket and tilted upwards to align with the bottom of the strip; the second bracket is fixedly installed on the top of the base plate and located between the first bracket and the lifting mechanism; the second air knife is fixedly installed on the second bracket and tilted downwards to align with the top of the strip.

[0007] The hot-rolled plate cooling and coiling device also includes a clamping roller mechanism; The clamping roller mechanism is disposed on the top of the base plate and is located between the second conveying roller mechanism and the first support.

[0008] The water spray cooling mechanism includes a mounting frame, multiple upper water spray pipes, multiple lower water spray pipes, multiple upper nozzles, and multiple lower nozzles. The mounting bracket is fixedly installed on the top of the base plate; multiple upper spray pipes are respectively fixedly installed on the mounting bracket; multiple lower spray pipes are respectively fixedly installed on the mounting bracket; multiple upper nozzles are connected to each upper spray pipe; multiple lower nozzles are connected to each lower spray pipe.

[0009] The water spray cooling mechanism also includes a collection tank; The collection box is located on top of the base plate.

[0010] The lifting mechanism includes a U-shaped bracket, two top rods, a slider, a lead screw, and a motor. The U-shaped bracket is fixedly installed on the top of the base plate; the two top rods are respectively fixedly connected to the winding machine and slidably connected to the U-shaped bracket, and respectively pass through the U-shaped bracket; the slider is slidably installed inside the U-shaped bracket and fixedly connected to the bottom ends of the two top rods; the lead screw is rotatably installed inside the U-shaped bracket and threadedly connected to the slider; the motor is fixedly installed on the top of the base plate; the output end of the motor is fixedly connected to the lead screw.

[0011] The hot-rolled plate cooling and coiling device also includes a water receiving tank; The water receiving trough is fixedly installed inside the second conveying roller mechanism.

[0012] The hot-rolled plate cooling and coiling device further includes a first water receiving tank and a second water receiving tank. The first water receiving tank is fixedly installed on the top of the base plate and located on the side of the first air knife, for receiving cooling water blown down by the first air knife; the second water receiving tank is fixedly installed on the top of the base plate and located on the side of the winding machine away from the second air knife, for receiving cooling water blown down by the second air knife.

[0013] The hot-rolled plate cooling and coiling device also includes two linkage adjustment mechanisms and a third air knife; Two of the aforementioned linkage adjustment mechanisms are located on the top of the base plate; the third air knife is located on the two aforementioned linkage adjustment mechanisms, which ensure that the third air knife is always facing the bottom of the steel coil and blowing out a high-pressure airflow.

[0014] The linkage adjustment mechanism includes a connecting frame, a first rack, a first support plate, a first gear, a second support plate, a second gear, a guide rod, a slide bar, and a second rack. The connecting frame is fixedly installed on one side of the winding machine; the first rack is fixedly installed on one side of the connecting frame; the first support plate is fixedly installed on the top of the base plate; the first gear is rotatably installed on the first support plate and meshes with the first rack; the second support plate is fixedly installed on the top of the base plate; the second gear is rotatably installed on the second support plate and meshes with the first gear; the guide rod is vertically fixedly installed on the top of the base plate; the slide bar is slidably installed on the guide rod and fixedly connected to the third air knife, and is penetrated by the guide rod; the second rack is fixedly installed on one side of the slide bar and meshes with the second gear.

[0015] The present invention also provides a method for cooling and coiling hot-rolled steel sheets, comprising the following steps: The finished strip is sequentially introduced into the first conveyor roller mechanism and the second conveyor roller mechanism, so that the strip runs continuously in the horizontal direction. When the strip passes through the water spray cooling mechanism, the water spray cooling mechanism is activated so that it sprays water on the upper and lower surfaces of the strip from the top and bottom at the same time to cool the strip to the target coiling temperature. After being cooled, the strip continues to move forward. When the strip passes the position of the first support, the first air knife fixed on the first support is activated, tilting it upwards to blow high-pressure airflow at the bottom of the strip to remove the residual cooling water adhering to the lower surface of the strip. After being purged from the bottom, the strip continues to move forward. When the strip passes the location of the second support, the second air knife fixed on the second support is activated, tilting it downwards to blow high-pressure airflow at the top of the strip to remove the residual cooling water adhering to the upper surface of the strip. The strip steel, after being blown and dried, is fed into a coiler, which then coils the strip steel into a coil.

[0016] This invention discloses a hot-rolled steel strip cooling and coiling device and method. A gap exists between the first and second conveying roller mechanisms for installing a water spray cooling mechanism, which sprays cooling water onto the upper and lower surfaces of the strip. The first air knife, tilted upwards, blows high-pressure airflow onto the lower surface of the strip, forming a scraping air curtain to remove cooling water from the lower surface. The second air knife, tilted downwards, blows high-pressure airflow onto the upper surface of the strip, forming a scraping air curtain to remove cooling water from the upper surface. The directions of the high-pressure airflow from the first and second air knives are parallel to each other. The strip moves in a consistent direction, but is slightly inclined at an angle. As the strip is gradually wound up by the coiler, the diameter of the resulting coil gradually increases. To ensure the strip remains horizontal, the lifting mechanism lowers the coiler gradually. The coiler descends by the same amount as the radius of the coil increases, ensuring the end of the strip remains horizontal. This allows the second air knife to effectively blow away the cooling water from the upper surface of the strip. Without the lifting mechanism, as the coil diameter increases during winding, the strip naturally rises between the second air knife and the coiler, potentially resulting in incomplete cleaning of the cooling water. In operation, the finished strip is sequentially introduced into the first conveyor roller mechanism and the second conveyor roller mechanism, allowing the strip to run continuously in the horizontal direction. When the strip passes the water spray cooling mechanism, the mechanism is activated to simultaneously spray water onto the upper and lower surfaces of the strip from the top and bottom, cooling it to the target coiling temperature. After cooling, the strip continues to move forward. When the strip passes the position of the first support, the first air knife fixed on the first support is activated, tilting upwards to blow high-pressure airflow towards the bottom of the strip, removing residual cooling water adhering to the lower surface. After bottom cleaning, the strip continues to move forward. When the strip passes the position of the second support, the second air knife fixed on the second support is activated, tilting downwards to blow high-pressure airflow towards the top of the strip, removing residual cooling water adhering to the upper surface. The cleaned and dried strip is then introduced into the coiler, which coils the strip into a steel coil. This solves the problem of coiling the strip before the surface moisture is completely removed. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0018] Figure 1 This is a schematic diagram of the structure of the first embodiment of the present invention.

[0019] Figure 2yes Figure 1 A magnified view of detail A.

[0020] Figure 3 This is a structural schematic diagram of the first embodiment of the present invention from another angle.

[0021] Figure 4 yes Figure 3 A magnified view of detail B.

[0022] Figure 5 This is a front view of the first embodiment of the present invention.

[0023] Figure 6 yes Figure 5 A magnified view of detail C.

[0024] Figure 7 This is a flowchart illustrating the second embodiment of the present invention.

[0025] 1-Base plate, 2-First conveyor roller mechanism, 3-Second conveyor roller mechanism, 4-Water spray cooling mechanism, 5-Lifting mechanism, 6-Winder, 7-First support, 8-First air knife, 9-Second support, 10-Second air knife, 11-Pinch roller mechanism, 12-Water receiving tank, 13-First water receiving tank, 14-Second water receiving tank, 15-Linkage adjustment mechanism, 16-Third air knife, 401-Mounting bracket, 402-Upper water spray pipe, 403-Lower... Spray pipe, 404-upper nozzle, 405-lower nozzle, 406-collection box, 501-U-shaped bracket, 502-top rod, 503-slider, 504-lead screw, 505-motor, 1501-connecting frame, 1502-first rack, 1503-first support plate, 1504-first gear, 1505-second support plate, 1506-second gear, 1507-guide rod, 1508-slider, 1509-second rack. Detailed Implementation

[0026] The first embodiment of this application is as follows: Please see Figures 1-6 ,in, Figure 1 This is a schematic diagram of the structure of the first embodiment of the present invention. Figure 2 yes Figure 1 A magnified view of detail A. Figure 3 This is a structural schematic diagram of the first embodiment of the present invention from another angle. Figure 4 yes Figure 3 A magnified view of detail B. Figure 5 This is a front view of the first embodiment of the present invention. Figure 6 yes Figure 5 A magnified view of detail C.

[0027] This invention provides a hot-rolled steel plate cooling and coiling device, comprising a base plate 1, a first conveying roller mechanism 2, a second conveying roller mechanism 3, a water spray cooling mechanism 4, a lifting mechanism 5, a coiler 6, a first support 7, a first air knife 8, a second support 9, and a second air knife 10; the hot-rolled steel plate cooling and coiling device further includes a clamping roller mechanism 11; the water spray cooling mechanism 4 includes a mounting frame 401, multiple upper water spray pipes 402, multiple lower water spray pipes 403, multiple upper nozzles 404, and multiple lower nozzles 405; the water spray cooling mechanism 4 also includes a collection box 406; the lifting mechanism 5 includes a U-shaped support 501, two top rods 502, and a slider 50 3. Screw 504 and motor 505; the hot-rolled plate cooling and coiling device also includes a water receiving tank 12; the hot-rolled plate cooling and coiling device also includes a first water receiving tank 13 and a second water receiving tank 14; the hot-rolled plate cooling and coiling device also includes two linkage adjustment mechanisms 15 and a third air knife 16; the linkage adjustment mechanism 15 includes a connecting frame 1501, a first rack 1502, a first support plate 1503, a first gear 1504, a second support plate 1505, a second gear 1506, a guide rod 1507, a slide bar 1508, and a second rack 1509; the aforementioned solution solves the problem of coiling the strip before the surface moisture is completely removed.

[0028] Furthermore, the first conveying roller mechanism 2 is disposed on the top of the base plate 1; the second conveying roller mechanism 3 is disposed on the top of the base plate 1; the water spray cooling mechanism 4 is disposed on the top of the base plate 1 and located between the first conveying roller mechanism 2 and the second conveying roller mechanism 3, for spraying water onto the strip steel from the top and bottom; the lifting mechanism 5 is disposed on the top of the base plate 1 and located on the side of the second conveying roller mechanism 3 away from the water spray cooling mechanism 4; the coiler 6 is disposed on top of the lifting mechanism 5. The first bracket 7 is fixedly mounted on the top of the base plate 1 and located on the side of the second conveying roller mechanism 3 away from the water spray cooling mechanism 4; the first air knife 8 is fixedly mounted on the first bracket 7 and tilted upwards to align with the bottom of the strip; the second bracket 9 is fixedly mounted on the top of the base plate 1 and located between the first bracket 7 and the lifting mechanism 5; the second air knife 10 is fixedly mounted on the second bracket 9 and tilted downwards to align with the top of the strip.

[0029] In this embodiment, there is a gap between the first conveyor roller mechanism 2 and the second conveyor roller mechanism 3 for installing the water spray cooling mechanism 4. The water spray cooling mechanism 4 sprays cooling water onto the upper and lower surfaces of the strip. The first air knife 8 is tilted upwards and blows high-pressure airflow onto the lower surface of the strip to form a scraping air curtain, removing the cooling water from the lower surface of the strip. The second air knife 10 is tilted downwards and blows high-pressure airflow onto the upper surface of the strip to form a scraping air curtain, removing the cooling water from the upper surface of the strip. The direction of the high-pressure airflow from the first air knife 8 and the second air knife 10 is the same as the direction of the strip's forward movement. The strip is aligned with the coiler 6, but slightly tilted at an angle. As the strip is gradually coiled by the coiler 6, the diameter of the coil gradually increases. To ensure the strip remains horizontal, the lifting mechanism 5 lowers the coiler 6 gradually, lowering it by the same amount as the radius of the coil increases, ensuring the end of the strip remains horizontal. This allows the second air knife 10 to effectively blow away the cooling water from the upper surface of the strip. Without the lifting mechanism 5, during the coiling process, as the coil diameter gradually increases, the strip naturally rises between the second air knife 10 and the coiler 6, potentially resulting in incomplete cleaning of the cooling water. In operation, the finished strip is sequentially introduced into the first conveyor roller mechanism 2 and the second conveyor roller mechanism 3, allowing the strip to run continuously in the horizontal direction. When the strip passes the water spray cooling mechanism 4, the water spray cooling mechanism 4 is activated, simultaneously spraying water onto the upper and lower surfaces of the strip from the top and bottom to cool it to the target coiling temperature. After cooling, the strip continues to move forward. When the strip passes the position of the first support 7, the first air knife 8 fixed on the first support 7 is activated, tilting upwards to blow high-pressure airflow towards the bottom of the strip, removing residual cooling water adhering to the lower surface of the strip. After bottom cleaning, the strip continues to move forward. When the strip passes the position of the second support 9, the second air knife 10 fixed on the second support 9 is activated, tilting downwards to blow high-pressure airflow towards the top of the strip, removing residual cooling water adhering to the upper surface of the strip. The cleaned and dried strip is then introduced into the coiler 6, which coils the strip into a steel coil. This solves the problem of coiling the strip before the surface moisture is completely removed.

[0030] Furthermore, the clamping roller mechanism 11 is disposed on the top of the base plate 1 and is located between the second conveying roller mechanism 3 and the first support 7.

[0031] In this embodiment, the pinch roller is used to accurately guide the strip and maintain the winding tension.

[0032] Furthermore, the mounting bracket 401 is fixedly mounted on the top of the base plate 1; a plurality of upper spray pipes 402 are respectively fixedly mounted on the mounting bracket 401; a plurality of lower spray pipes 403 are respectively fixedly mounted on the mounting bracket 401; a plurality of upper nozzles 404 are connected to each upper spray pipe 402; a plurality of lower nozzles 405 are connected to each lower spray pipe 403.

[0033] In this embodiment, both the upper spray pipe 402 and the lower spray pipe 403 are connected to an external water source, and cooling water is sprayed onto the upper and lower surfaces of the strip through multiple upper nozzles 404 and multiple lower nozzles 405, respectively.

[0034] Furthermore, the collection box 406 is disposed on the top of the base plate 1.

[0035] In this embodiment, the cooling water flowing down from the strip falls directly into the collection box 406 and is collected.

[0036] Furthermore, the U-shaped bracket 501 is fixedly mounted on the top of the base plate 1; the two top rods 502 are respectively fixedly connected to the winding machine 6 and slidably connected to the U-shaped bracket 501, and respectively pass through the U-shaped bracket 501; the slider 503 is slidably mounted inside the U-shaped bracket 501 and fixedly connected to the bottom ends of the two top rods 502; the lead screw 504 is rotatably mounted inside the U-shaped bracket 501 and threadedly connected to the slider 503; the motor 505 is fixedly mounted on the top of the base plate 1; the output end of the motor 505 is fixedly connected to the lead screw 504.

[0037] In this embodiment, the motor 505 drives the lead screw 504 to rotate, the lead screw 504 drives the slider 503 to slide, and the slider 503 drives the winding machine 6 to rise and fall through the two top rods 502.

[0038] Furthermore, the water receiving trough 12 is fixedly installed inside the second conveying roller mechanism 3.

[0039] In this embodiment, after the strip is cooled by water spray, it passes over the second conveying roller mechanism 3, and the dripping water is caught by the water receiving tank 12.

[0040] Furthermore, the first water receiving tank 13 is fixedly installed on the top of the base plate 1 and located on the side of the first air knife 8, for receiving the cooling water blown down by the first air knife 8; the second water receiving tank 14 is fixedly installed on the top of the base plate 1 and located on the side of the winding machine 6 away from the second air knife 10, for receiving the cooling water blown down by the second air knife 10.

[0041] In this embodiment, the residual cooling water adhering to the lower surface of the strip is sheared and peeled off by the high-speed air curtain sprayed by the first air knife 8, forming water droplets that splash along the running direction of the strip and fall into the first water receiving tank 13 located in front of the first air knife 8; the residual cooling water adhering to the upper surface of the strip is sheared and peeled off by the high-speed air curtain sprayed by the second air knife 10, forming water droplets that splash along the running direction of the strip and pass over the coiler 6, falling into the second water receiving tank 14 located on the side of the coiler 6 away from the second air knife 10.

[0042] Furthermore, the two linkage adjustment mechanisms 15 are disposed on the top of the base plate 1; the third air knife 16 is disposed on the two linkage adjustment mechanisms 15, and the two linkage adjustment mechanisms 15 ensure that the third air knife 16 is always facing the bottom end of the steel coil and blowing out high-pressure airflow.

[0043] In this embodiment, the third air knife 16 is used to blow high-pressure airflow onto the bottom end of the formed steel coil to further ensure drying. After the upper surface of the strip is swept by the second air knife 10, it is swept by the third air knife 16 again during winding. As the radius of the steel coil increases, the bottom end of the steel coil itself gradually moves downward. At the same time, the coiler 6 also gradually moves downward. Therefore, the two linkage adjustment mechanisms 15 also move downward along with the third air knife 16. The radius of the steel coil increases each time, which is the thickness S of the strip. In order to ensure that the end of the strip does not rise (that is, to ensure that the top of the formed steel coil is level with the uncoiled strip), the coiler 6 will also descend by a distance, which is also S. Therefore, the bottom of the steel coil will descend by a distance 2S. Correspondingly, the third air knife 16 should also descend by 2S.

[0044] Furthermore, the connecting frame 1501 is fixedly disposed on one side of the winding machine 6; the first rack 1502 is fixedly disposed on one side of the connecting frame 1501; the first support plate 1503 is fixedly disposed on the top of the base plate 1; the first gear 1504 is rotatably disposed on the first support plate 1503 and meshes with the first rack 1502; the second support plate 1505 is fixedly disposed on the top of the base plate 1; the second gear 1506 is rotatably disposed on the second support plate 1505 and meshes with the first gear 1504; the guide rod 1507 is vertically fixedly disposed on the top of the base plate 1; the slide bar 1508 is slidably disposed on the guide rod 1507 and is fixedly connected to the third air knife 16 and is penetrated by the guide rod 1507; the second rack 1509 is fixedly disposed on one side of the slide bar 1508 and meshes with the second gear 1506.

[0045] In this embodiment, when the winding machine 6 descends, it drives the connecting frame 1501 and the first rack 1502 to descend synchronously; the first rack 1502 drives the first gear 1504 to rotate, the first gear 1504 drives the second gear 1506 meshing with it to rotate, and the second gear 1506 in turn drives the second rack 1509 meshing with it, so that the slide bar 1508 slides downward along the guide rod 1507, thereby driving the third air knife 16 to descend synchronously.

[0046] The transmission ratio between the first gear 1504 and the second gear 1506 is set to 2:1. When the coiler 6 descends a distance S, the third air knife 16 descends a corresponding distance 2S, thereby ensuring that the third air knife 16 is always aligned with the bottom end of the steel coil.

[0047] In this embodiment, a hot-rolled sheet cooling and coiling device has a gap between the first conveying roller mechanism 2 and the second conveying roller mechanism 3 for installing the water spray cooling mechanism 4. The water spray cooling mechanism 4 sprays cooling water onto the upper and lower surfaces of the strip. The first air knife 8 is tilted upwards and blows high-pressure airflow onto the lower surface of the strip to form a scraping air curtain, removing the cooling water from the lower surface of the strip. The second air knife 10 is tilted downwards and blows high-pressure airflow onto the upper surface of the strip to form a scraping air curtain, removing the cooling water from the upper surface of the strip. The direction of the high-pressure airflow from the first air knife 8 and the second air knife 10 is the same as that of the strip. The strip moves in the same direction, but is slightly tilted at an angle. As the strip is gradually wound up by the coiler 6, the diameter of the coil gradually increases. To ensure the strip remains horizontal, the lifting mechanism 5 lowers the coiler 6 gradually. The coiler 6 lowers by the same amount as the radius of the coil increases, ensuring the end of the strip remains horizontal. This allows the second air knife 10 to effectively blow away the cooling water from the upper surface of the strip. If the lifting mechanism 5 is not installed, during the winding process, as the coil diameter gradually increases, the strip naturally rises between the second air knife 10 and the coiler 6, and the cooling water may not be completely blown away. In operation, the finished strip is sequentially introduced into the first conveyor roller mechanism 2 and the second conveyor roller mechanism 3, allowing the strip to run continuously in the horizontal direction. When the strip passes the water spray cooling mechanism 4, the water spray cooling mechanism 4 is activated, simultaneously spraying water onto the upper and lower surfaces of the strip from the top and bottom to cool it to the target coiling temperature. After cooling, the strip continues to move forward. When the strip passes the position of the first support 7, the first air knife 8 fixed on the first support 7 is activated, tilting upwards to blow high-pressure airflow towards the bottom of the strip, removing residual cooling water adhering to the lower surface of the strip. After bottom cleaning, the strip continues to move forward. When the strip passes the position of the second support 9, the second air knife 10 fixed on the second support 9 is activated, tilting downwards to blow high-pressure airflow towards the top of the strip, removing residual cooling water adhering to the upper surface of the strip. The cleaned and dried strip is then introduced into the coiler 6, which coils the strip into a steel coil. This solves the problem of coiling the strip before the surface moisture is completely removed.

[0048] The second embodiment of this application is as follows: Based on the first embodiment, please refer to Figure 7 ,in, Figure 7 This is a flowchart illustrating the second embodiment of the present invention.

[0049] The present invention provides a method for cooling and coiling hot-rolled steel sheets, comprising the following steps: S1: The finished strip steel is sequentially introduced into the first conveying roller mechanism 2 and the second conveying roller mechanism 3, so that the strip steel runs continuously in the horizontal direction; S2: When the strip passes through the water spray cooling mechanism 4, the water spray cooling mechanism 4 is activated so that it sprays water on the upper and lower surfaces of the strip from the top and bottom at the same time to cool the strip to the target coiling temperature. S3: The cooled strip continues to move forward. When the strip passes the position of the first support 7, the first air knife 8 fixed on the first support 7 is activated, so that it tilts upward and blows out high-pressure airflow at the bottom of the strip to remove the residual cooling water attached to the lower surface of the strip. S4: After being blown from the bottom, the strip continues to move forward. When the strip passes the position of the second support 9, the second air knife 10 fixed on the second support 9 is activated, so that it tilts downward and blows out a high-pressure airflow to remove the residual cooling water attached to the upper surface of the strip. S5: The strip steel that has been blown and dried is introduced into the coiler 6, and the coiler 6 coils the strip steel into a steel coil.

[0050] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A device for cooling and coiling hot-rolled steel sheets, characterized in that, It includes a base plate, a first conveyor roller mechanism, a second conveyor roller mechanism, a water spray cooling mechanism, a lifting mechanism, a winding machine, a first support, a first air knife, a second support, and a second air knife; The first conveyor roller mechanism is disposed on the top of the base plate; the second conveyor roller mechanism is disposed on the top of the base plate; the water spray cooling mechanism is disposed on the top of the base plate and located between the first conveyor roller mechanism and the second conveyor roller mechanism, for spraying water onto the strip steel from the top and bottom; the lifting mechanism is disposed on the top of the base plate and located on the side of the second conveyor roller mechanism away from the water spray cooling mechanism; the coiler is disposed on top of the lifting mechanism; The first bracket is fixedly installed on the top of the base plate and located on the side of the second conveying roller mechanism away from the water spray cooling mechanism; the first air knife is fixedly installed on the first bracket and tilted upwards to align with the bottom of the strip; the second bracket is fixedly installed on the top of the base plate and located between the first bracket and the lifting mechanism; the second air knife is fixedly installed on the second bracket and tilted downwards to align with the top of the strip.

2. The hot-rolled plate cooling and coiling device as described in claim 1, characterized in that, The hot-rolled plate cooling and coiling device also includes a pinch roller mechanism; The clamping roller mechanism is disposed on the top of the base plate and is located between the second conveying roller mechanism and the first support.

3. The hot-rolled plate cooling and coiling device as described in claim 2, characterized in that, The water spray cooling mechanism includes a mounting frame, multiple upper water spray pipes, multiple lower water spray pipes, multiple upper nozzles, and multiple lower nozzles; The mounting bracket is fixedly installed on the top of the base plate; multiple upper water spray pipes are respectively fixedly installed on the mounting bracket; multiple lower water spray pipes are respectively fixedly installed on the mounting bracket; Each of the above water spray pipes is connected to multiple above spray heads; Each of the lower water spray pipes is connected to multiple lower spray heads.

4. The hot-rolled plate cooling and coiling device as described in claim 3, characterized in that, The water spray cooling mechanism also includes a collection tank; The collection box is located on top of the base plate.

5. The hot-rolled plate cooling and coiling device as described in claim 4, characterized in that, The lifting mechanism includes a U-shaped bracket, two top rods, a slider, a lead screw, and a motor; The U-shaped bracket is fixedly installed on the top of the base plate; the two top rods are respectively fixedly connected to the winding machine and slidably connected to the U-shaped bracket, and respectively pass through the U-shaped bracket; the slider is slidably installed inside the U-shaped bracket and fixedly connected to the bottom ends of the two top rods; the lead screw is rotatably installed inside the U-shaped bracket and threadedly connected to the slider; the motor is fixedly installed on the top of the base plate; the output end of the motor is fixedly connected to the lead screw.

6. The hot-rolled plate cooling and coiling device as described in claim 5, characterized in that, The hot-rolled plate cooling and coiling device also includes a water receiving tank; The water receiving trough is fixedly installed inside the second conveying roller mechanism.

7. The hot-rolled plate cooling and coiling device as described in claim 6, characterized in that, The hot-rolled plate cooling and coiling device also includes a first water receiving tank and a second water receiving tank. The first water receiving tank is fixedly installed on the top of the base plate and located on the side of the first air knife, for receiving cooling water blown down by the first air knife; the second water receiving tank is fixedly installed on the top of the base plate and located on the side of the winding machine away from the second air knife, for receiving cooling water blown down by the second air knife.

8. The hot-rolled plate cooling and coiling device as described in claim 7, characterized in that, The hot-rolled plate cooling and coiling device also includes two linkage adjustment mechanisms and a third air knife; Two of the aforementioned linkage adjustment mechanisms are located on the top of the base plate; the third air knife is located on the two aforementioned linkage adjustment mechanisms, which ensure that the third air knife is always facing the bottom of the steel coil and blowing out a high-pressure airflow.

9. The hot-rolled plate cooling and coiling device as described in claim 8, characterized in that, The linkage adjustment mechanism includes a connecting frame, a first rack, a first support plate, a first gear, a second support plate, a second gear, a guide rod, a slide bar, and a second rack; The connecting frame is fixedly installed on one side of the winding machine; the first rack is fixedly installed on one side of the connecting frame; the first support plate is fixedly installed on the top of the base plate; the first gear is rotatably installed on the first support plate and meshes with the first rack; the second support plate is fixedly installed on the top of the base plate; the second gear is rotatably installed on the second support plate and meshes with the first gear; the guide rod is vertically fixedly installed on the top of the base plate; the slide bar is slidably installed on the guide rod and fixedly connected to the third air knife, and is penetrated by the guide rod; the second rack is fixedly installed on one side of the slide bar and meshes with the second gear.

10. A method for cooling and coiling hot-rolled steel sheet, employing the hot-rolled steel sheet cooling and coiling apparatus as described in claim 1; characterized in that, Includes the following steps: The finished strip is sequentially introduced into the first conveyor roller mechanism and the second conveyor roller mechanism, so that the strip runs continuously in the horizontal direction. When the strip passes through the water spray cooling mechanism, the water spray cooling mechanism is activated so that it sprays water on the upper and lower surfaces of the strip from the top and bottom at the same time to cool the strip to the target coiling temperature. After being cooled, the strip continues to move forward. When the strip passes the position of the first support, the first air knife fixed on the first support is activated, tilting it upwards to blow high-pressure airflow at the bottom of the strip to remove the residual cooling water adhering to the lower surface of the strip. After being purged from the bottom, the strip continues to move forward. When the strip passes the location of the second support, the second air knife fixed on the second support is activated, tilting it downwards to blow high-pressure airflow at the top of the strip to remove the residual cooling water adhering to the upper surface of the strip. The strip steel, after being blown and dried, is fed into a coiler, which then coils the strip steel into a coil.

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