High-efficiency cooling device for rolling steel

Abstract

This utility model discloses a high-efficiency cooling device for steel rolling, including a cooling box with openings at both ends along its length for hot-rolled steel to enter and exit; a conveying mechanism for conveying the hot-rolled steel; an air-cooling mechanism including a fan rotatably mounted on the top of the cooling box for blowing air to cool the hot-rolled steel on the conveying mechanism; and a water-cooling mechanism including a spray box rotatably mounted within the cooling box along its length, with multiple nozzles evenly arranged along its length at the bottom of the spray box for spraying water to cool the hot-rolled steel on the conveying mechanism; and a swinging component connected to one end of the spray box along its length for driving the spray box to swing back and forth along its own axis in a vertical plane. This utility model employs both air-cooling and water-cooling methods, resulting in better cooling effect for hot-rolled steel; the rotation of the spray box by the swinging component expands the spray range of the nozzles; and the cooling water is cooled by condenser pipes as it falls, effectively reducing the temperature of the cooling water.

Description

Technical Field

[0001] This utility model relates to the field of steel rolling cooling technology, and in particular to a high-efficiency cooling device for steel rolling. Background Technology

[0002] The pressure processing of steel ingots and billets, which involves changing their shape between rotating rolls, is called steel rolling. Like other pressure processing methods, the purpose of steel rolling is twofold: firstly, to obtain the desired shape, such as steel plates, strips, wire rods, and various structural steel sections; and secondly, to improve the internal quality of the steel. Common examples include automotive steel sheets, bridge steel, boiler steel, pipeline steel, rebar, reinforcing bars, electrical silicon steel, galvanized sheets, tinplate, and even train wheels, all of which are produced through steel rolling.

[0003] After calcination, rolled steel needs to be cooled, and the cooled rolled steel is then transported to the next processing stage. An existing steel cooling device uses cooling water spraying to cool the hot-rolled steel. However, this device relies solely on water spraying, resulting in poor cooling efficiency. Furthermore, the cooling water in this device is recycled and used multiple times to cool the hot-rolled steel. During cooling, the water flows directly into a storage tank after passing over the surface of the hot-rolled steel, causing the water temperature to rise and reducing its cooling effect. Additionally, the fixed position of the cooling water nozzles at the top of the device means that areas on the top surface of the hot-rolled steel along the width direction may not be reached by the spray, further affecting the spray cooling effect. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a high-efficiency cooling device for steel rolling, which adopts both air cooling and water cooling methods, resulting in better cooling effect for hot-rolled steel; the spray box is rotated by a swing component to expand the spray range of the nozzles; the cooling water is cooled by condenser pipes as it falls, effectively reducing the temperature of the cooling water.

[0005] This utility model provides a high-efficiency cooling device for steel rolling, comprising:

[0006] The cooling box has openings at both ends along its length for the hot rolled steel to enter and exit.

[0007] A conveying mechanism, located below the water-cooling mechanism, is arranged inside the cooling box along the length of the cooling box and is used to convey hot-rolled steel;

[0008] The air-cooling mechanism includes a fan that is rotatably mounted on the top of the cooling box for blowing air to cool the hot-rolled steel on the conveying mechanism;

[0009] A water-cooling mechanism, located below the air-cooling mechanism, includes a spray box rotatably disposed within the cooling box along its length. A water inlet pipe is connected to the top of the spray box, and the other end of the water inlet pipe is connected to the bottom of the cooling box. Multiple nozzles, connected to the spray box, are evenly arranged along the bottom of the spray box along its length for spraying water to cool the hot-rolled steel on the conveying mechanism. A swing assembly is connected to one end of the spray box along its length, and the swing assembly drives the spray box to reciprocate around its own axis in a vertical plane.

[0010] A flow-guiding and cooling mechanism, located below the conveying mechanism, is used to guide and cool the cooling water sprayed and falling from the nozzle.

[0011] Furthermore, a first rotating shaft is fixedly connected to one end of the spray box along its length, and a second rotating shaft is fixedly connected to the other end. The other end of the first rotating shaft is rotatably connected to the inner wall of the cooling box, and the other end of the second rotating shaft rotatably passes through the side wall of the cooling box and is connected to the swing assembly.

[0012] Furthermore, the swing assembly includes a first link, a second link, a third link, and a first drive motor. One end of the second link is rotatably connected to one end of the first link, and the other end is rotatably connected to one end of the third link. The other end of the first link is fixedly connected to the second rotating shaft, and the other end of the third link is fixedly connected to the output end of the first drive motor. The first drive motor is fixedly mounted on the outside of the cooling box by a bracket.

[0013] Furthermore, the flow-guiding cooling mechanism includes a first flow-guiding plate and a second flow-guiding plate arranged alternately. The first flow-guiding plate is located above the second flow-guiding plate, and the first flow-guiding plate is inclined downward along the direction close to the second flow-guiding plate. The second flow-guiding plate is inclined downward along the direction away from the first flow-guiding plate. There is a gap between the lower ends of the first flow-guiding plate and the second flow-guiding plate and the inner wall of the cooling box. The top surfaces of the first flow-guiding plate and the second flow-guiding plate are recessed with flow-guiding grooves along their length. The bottom surfaces of the first flow-guiding plate and the second flow-guiding plate are covered with condenser pipes, and cooling water flows in the condenser pipes.

[0014] Furthermore, a water tank is provided outside the cooling box, and a refrigeration unit is provided on one side of the water tank. One end of the condenser pipe is connected to a water outlet pipe, and the other end is connected to a return pipe. The other ends of the water outlet pipe and the other end of the return pipe are both connected to the water tank.

[0015] Furthermore, a first water pump is installed on the water inlet pipe.

[0016] Furthermore, a second water pump is installed on the outlet pipe, and a third water pump is installed on the return pipe.

[0017] Furthermore, a filter screen is provided inside the cooling box below the conveying mechanism, and the filter screen is arranged along the length of the cooling box.

[0018] Furthermore, the filter screen is symmetrically provided with sliding strips on both sides along its width direction, and the cooling box is symmetrically provided with sliding grooves on both sides along its width direction. The sliding grooves are arranged along the length direction of the cooling box, and one end of each groove communicates with the opening of the cooling box. The sliding strips are slidably connected to the sliding grooves, and the sliding strips and sliding grooves are fixed together by fasteners. Compared with the prior art, the beneficial effects of this utility model are:

[0019] (1) This utility model uses air cooling mechanism and water cooling mechanism to alternately cool hot rolled steel. Compared with using only cooling water cooling zone, the cooling effect of this application is better.

[0020] (2) This utility model drives the spray box to rotate around its axis along the vertical plane by the swing component, which can change the spray angle of the nozzle, thereby expanding the fan-shaped spray range of the nozzle, and thus spraying the width direction of the hot-rolled steel more comprehensively, avoiding the existence of spray dead angles on both sides of the top surface of the hot-rolled steel along the width direction, and improving the spraying effect of the cooling water.

[0021] (3) The flow guiding and cooling mechanism of this utility model includes a first flow guide plate and a second flow guide plate. The cooling water after the hot rolled steel is cooled falls down. During the falling process, the cooling water falls on the first flow guide plate and then falls on the second flow guide plate after being guided by the first flow guide plate. This extends the falling path of the cooling water. During the flow of the cooling water on the first flow guide plate and the second flow guide plate, heat exchange is carried out through the condenser tube to cool the cooling water. This ensures that the cooling water still has a low temperature when it is circulated, further improving the cooling effect of the water cooling mechanism.

[0022] (4) This utility model can filter impurities that fall into hot-rolled steel during the water cooling process through the filter screen, preventing impurities from falling into the circulating cooling water and ensuring the cleanliness of the cooling water.

[0023] It should be understood that the description in this utility model description section is not intended to limit the key or essential features of the embodiments of this utility model, nor is it intended to restrict the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0024] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0025] Figure 1 This is a front structural diagram of the present invention;

[0026] Figure 2 This is a schematic diagram of the swing component in this utility model;

[0027] Figure 3 This is a schematic diagram of the front structure of the first guide plate in this utility model;

[0028] Figure 4 This is a schematic diagram of the back structure of the first guide plate in this utility model;

[0029] Figure 5 This is a schematic diagram of the structure of the filter screen and the chute in this utility model;

[0030] The diagram labels are as follows: 1. Cooling box; 2. Conveying mechanism; 3. Air-cooled mechanism; 4. Water-cooled mechanism; 5. Airflow cooling mechanism; 6. Filter screen.

[0031] 11. Opening; 12. Slide;

[0032] 21. Conveyor rollers;

[0033] 31. Fan;

[0034] 41. Spray box; 42. Water inlet pipe; 43. Spray head; 44. Swing assembly; 45. First rotating shaft; 46. Second rotating shaft; 47. First water pump;

[0035] 51. First baffle plate; 52. Second baffle plate; 53. Condenser; 54. Water tank; 55. Refrigeration unit; 56. Water outlet pipe; 57. Return pipe; 58. Second water pump; 59. Third water pump;

[0036] 61. Sliding bar; 62. Fastener;

[0037] 441. First connecting rod; 442. Second connecting rod; 443. Third connecting rod; 444. Drive motor; 511. Guide channel. Detailed Implementation

[0038] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0039] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0040] Please refer to Figures 1-5 The present invention provides a high-efficiency cooling device for steel rolling, including a cooling box 1, a conveying mechanism 2, an air-cooling mechanism 3, a water-cooling mechanism 4, and a flow-guiding cooling mechanism 5. The conveying mechanism 2, the air-cooling mechanism 3, the water-cooling mechanism 4, and the flow-guiding cooling mechanism 5 are all arranged in the cooling box 1, and the air-cooling mechanism 3, the water-cooling mechanism 4, the conveying mechanism 2, and the flow-guiding cooling mechanism 5 are arranged sequentially from top to bottom.

[0041] The cooling box 1 has openings 11 at both ends along its length for the hot rolled steel to enter and exit;

[0042] The conveying mechanism 2 is arranged inside the cooling box 1 along the length direction of the cooling box 1 and is used to convey hot-rolled steel. Specifically, the conveying mechanism 2 includes multiple conveying rollers 21, which are arranged side by side along the length direction of the cooling box 1. Both ends of the conveying rollers 21 are rotatably connected to the cooling box 1, and the multiple conveying rollers 21 are driven by sprockets, chains and drive motors (sprockets, chains and drive motors are not shown in the figure). The hot-rolled steel is conveyed into the cooling box 1 for cooling through the conveying rollers 21.

[0043] The air-cooling mechanism 3 includes a fan 31 that is rotatably installed at the top of the cooling box 1, which is used to blow air to cool the hot rolled steel on the conveying mechanism 2. Specifically, the fan 31 is driven by a drive motor, and the air generated by the fan 31 during rotation can remove the heat from the surface of the hot rolled steel to a certain extent, thereby achieving the effect of cooling the hot rolled steel.

[0044] The water cooling mechanism 4 is located below the air cooling mechanism 3, and includes a spray box 41 that is rotatably installed inside the cooling box 1 along the length of the cooling box 1. The top of the spray box 41 is connected to a water inlet pipe 42, and the other end of the water inlet pipe 42 is connected to the bottom of the cooling box 1. Specifically, the cooling water is stored at the bottom of the cooling box 1, and a cold water pipe is installed at the bottom. The water inlet pipe 42 is connected to the cold water pipe to realize the circulation of the cooling water.

[0045] Preferably, the bottom of the spray box 41 is evenly provided with a plurality of spray nozzles 43 connected thereto, which are used to spray water to cool the hot rolled steel on the conveying mechanism 2.

[0046] A swing assembly 44 is connected to one end of the spray box 41 along its length. The swing assembly 44 is used to drive the spray box 41 to swing back and forth along the vertical plane around its own axis. Specifically, by driving the spray box 41 to rotate back and forth along the vertical plane around its own axis through the swing assembly 44, the spray angle of the nozzle 43 can be increased, thereby expanding the fan-shaped spray range of the nozzle 43, and thus spraying the hot-rolled steel more comprehensively in the width direction, avoiding spray dead angles on both sides of the top surface of the hot-rolled steel in the width direction, and improving the spraying effect of the cooling water.

[0047] The flow guiding and cooling mechanism 5 is used to guide and cool the cooling water sprayed and falling from the nozzle 43.

[0048] In this invention, hot-rolled steel is conveyed to cooling box 1 by conveying mechanism 2, and air cooling mechanism 3 and water cooling mechanism 4 are alternately activated to improve the cooling effect on hot-rolled steel. When water cooling mechanism 4 is used for cooling, cooling water at the bottom of cooling box 1 flows into spray box 41 through water inlet pipe 42 and is sprayed out through nozzle 43 to spray cooling water onto the top surface of hot-rolled steel to achieve water cooling. At the same time, through swing component 44, spray box 41 can swing back and forth along vertical plane around its own axis to increase the spray angle of nozzle 43, thereby expanding the fan-shaped spray range of nozzle 43, and thus spraying the width direction of hot-rolled steel more comprehensively, avoiding spray dead angles and improving the spraying effect of cooling water. As the cooling water passes through the hot-rolled steel, it passes through flow guiding cooling mechanism 5 during the falling process. Flow guiding cooling mechanism 5 cools the falling cooling water and improves the cooling effect when the cooling water is sprayed again.

[0049] In a preferred embodiment, such as Figure 1 and Figure 2 As shown, a first rotating shaft 45 is fixedly connected to one end of the spray box 41 along its length, and a second rotating shaft 46 is fixedly connected to the other end. The other end of the first rotating shaft 45 is rotatably connected to the inner wall of the cooling box 1, and the other end of the second rotating shaft 46 rotatably passes through the side wall of the cooling box 1 and is connected to the swing assembly 44. Specifically, the first rotating shaft 45 and the second rotating shaft 46 are coaxially arranged.

[0050] Preferred, such as Figure 2 As shown, the swing mechanism 44 includes a first link 441, a second link 442, a third link 443, and a drive motor 444. One end of the second link 442 is rotatably connected to one end of the first link 441, and the other end is rotatably connected to one end of the third link 443. The other end of the first link 441 is fixedly connected to the second rotating shaft 46, and the other end of the third link 443 is fixedly connected to the output end of the drive motor 444. The drive motor 444 is fixedly mounted on the outside of the cooling box 1 by a bracket.

[0051] In this embodiment, the end 441a of the first rotating shaft 441 is fixedly connected to the second rotating shaft 46, and the end 443a of the third connecting rod is fixedly connected to the drive motor 444. Starting the drive motor 444 can drive the third connecting rod 443 to follow the output shaft of the drive motor 444 in a circular motion. Under the limitation of the first connecting rod 441, the first connecting rod 441 swings back and forth around the position fixedly connected to the second rotating shaft 46 as the center. Since one end of the first connecting rod 441 is fixedly connected to the second rotating shaft 46, the second rotating shaft 46 rotates around its own axis along the vertical plane, thereby driving the spray box 41 fixedly connected to it to rotate around the axis of the second rotating shaft 46 along the vertical plane, realizing comprehensive spraying of the top surface of the hot-rolled steel, avoiding spray dead angles on both sides of the width direction of the top surface of the hot-rolled steel, and improving the spraying effect.

[0052] In a preferred embodiment, such as Figure 1 , Figure 3 and Figure 4 As shown, the cooling mechanism 5 includes a first guide plate 51 and a second guide plate 52 arranged alternately. The first guide plate 51 is located above the second guide plate 52, and the first guide plate 51 is inclined downward along the direction close to the second guide plate 52. The second guide plate 52 is inclined downward along the direction away from the first guide plate 51. There is a gap between the lower ends of the first guide plate 51 and the second guide plate 52 and the inner wall of the cooling box 1. The top surfaces of the first guide plate 51 and the second guide plate 52 are recessed with guide grooves 511 along their length direction. The bottom surfaces of the first guide plate 51 and the second guide plate 52 are covered with condenser pipes 53, and cooling water flows in the condenser pipes 53.

[0053] In this embodiment, the condenser tubes 53 are evenly laid in a serpentine pattern on the bottom surfaces of the first guide plate 51 and the second guide plate 52. The cooling water after cooling the hot-rolled steel falls onto the first guide plate 51 during its descent. Since both the first guide plate 51 and the second guide plate 52 are inclined, the cooling water flows onto the second guide plate 52 after being guided by the first guide plate 51. After flowing on the second guide plate 52, it falls onto the bottom of the cooling tank 1, thus extending the falling path of the cooling water. Furthermore, during the flow of the cooling water on the first guide plate 51 and the second guide plate 52, heat exchange occurs through the condenser tubes 53, which cools the cooling water. This allows the falling cooling water to cool down over a longer path, improving the cooling effect of the cooling water. This ensures that the cooling water maintains a low temperature during circulation, further enhancing the cooling effect of the water-cooling mechanism.

[0054] It should be noted that multiple sets of first guide plates 51 and multiple sets of second guide plates 52 can be arranged in parallel. Adjacent first guide plates 51 and second guide plates 52 are arranged alternately. By setting multiple sets of first guide plates 51 and multiple sets of second guide plates 52, the flow path of the falling cooling water is extended, thereby improving the cooling effect of the cooling water.

[0055] In a preferred embodiment, such as Figure 1 As shown, a water tank 54 is installed outside the cooling box 1. A chiller 55 is installed on one side of the water tank 54. One end of the condenser pipe 53 is connected to the water outlet pipe 56, and the other end is connected to the return pipe 57. The other ends of the water outlet pipe 56 and the return pipe 57 are both connected to the water tank 54. Specifically, the chiller 56 cools the water in the water tank 54, and the cold water is returned through the water outlet pipe 56 and the return pipe 57, reducing water waste.

[0056] In a preferred embodiment, such as Figure 1 As shown, a first water pump 47 is installed on the water inlet pipe 42. The first water pump 47 provides the power for the return flow of cooling water.

[0057] In a preferred embodiment, such as Figure 1 As shown, a second water pump 58 is installed on the outlet pipe 56, and a third water pump 59 is installed on the return pipe 57. The second water pump 58 and the third water pump 59 provide the power for the outlet and return of cold water in the water tank 54.

[0058] In a preferred embodiment, such as Figure 1 As shown, a filter screen plate 6 is installed inside the cooling box 1 below the conveying mechanism 2, and the filter screen plate 6 is arranged along the length direction of the cooling box 1.

[0059] Specifically, the filter screen 6 can filter impurities that fall into the hot-rolled steel during the water cooling process, preventing impurities from falling into the circulating cooling water and ensuring the cleanliness of the cooling water.

[0060] In a preferred embodiment, such as Figure 1 and Figure 5 As shown, the filter screen plate 6 is symmetrically provided with slide bars 61 on both sides along its width direction, and a first fixing hole is provided on one end of the slide bar 61.

[0061] The cooling box 1 has symmetrically arranged sliding grooves 12 on both sides along its width direction. The openings of the two sets of sliding grooves 12 are arranged opposite each other. A second fixing hole is provided on the sliding groove 12. Preferably, the sliding groove 12 is arranged along the length direction of the cooling box 1, and one end of the sliding groove 12 is connected to the opening of the cooling box 1. The sliding strip 61 is slidably connected to the sliding groove 12, and the sliding strip 61 and the sliding groove 12 are fixed by fasteners 62.

[0062] In this embodiment, when installing the filter screen plate 6, the filter screen plate 6 is inserted into the slide groove 12 from the opening. One end of the slide bar 61 is provided with a first fixing hole, and the slide groove 12 is provided with a second fixing hole corresponding to the first fixing hole. After the filter screen plate 6 is installed inside the cooling box 1, it is fixed by inserting a fastening bolt through the second fixing hole into the first fixing hole. The fastening bolt is threadedly connected to the inner wall of the first fixing hole.

[0063] Working principle:

[0064] Hot-rolled steel is conveyed to cooling box 1 via conveyor 2. Air cooling mechanism 3 and water cooling mechanism 4 are alternately activated to improve the cooling effect on the hot-rolled steel. When water cooling mechanism 4 is used for cooling, cooling water at the bottom of cooling box 1 flows into spray box 41 through inlet pipe 42 and is sprayed out through nozzle 43 to cool the top surface of the hot-rolled steel, achieving water cooling. Simultaneously, the swing assembly 44 allows spray box 41 to swing back and forth along its own axis in a vertical plane, increasing the spray angle of nozzle 43 and thus expanding the fan-shaped spray range of nozzle 43, thereby providing more comprehensive cooling in the width direction of the hot-rolled steel. The spraying is applied to the surface to avoid dead spots and improve the spraying effect of the cooling water. The cooling water from the hot-rolled steel passes through the flow-guiding cooling mechanism 5 during its descent. Since both the first guide plate 51 and the second guide plate 52 are inclined, the cooling water falls onto the second guide plate 52 after being guided by the first guide plate 51. During the flow of the cooling water on the first guide plate 51 and the second guide plate 52, heat exchange is carried out through the condenser pipe 53 to cool the cooling water. This allows the falling cooling water to cool down over a longer path, improving the cooling effect of the cooling water and further enhancing the cooling effect of the water cooling mechanism.

[0065] In the description of this specification, the terms "connection," "installation," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0066] In the description of this specification, the terms "one embodiment," "some embodiments," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0067] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A high-efficiency cooling device for steel rolling, characterized in that, include: The cooling box has openings at both ends along its length for the hot rolled steel to enter and exit. A conveying mechanism, located below the water-cooling mechanism, is arranged inside the cooling box along the length of the cooling box and is used to convey hot-rolled steel; The air-cooling mechanism includes a fan that is rotatably mounted on the top of the cooling box for blowing air to cool the hot-rolled steel on the conveying mechanism; A water-cooling mechanism, located below the air-cooling mechanism, includes a spray box rotatably disposed within the cooling box along its length. A water inlet pipe is connected to the top of the spray box, and the other end of the water inlet pipe is connected to the bottom of the cooling box. Multiple nozzles, connected to the spray box, are evenly arranged along the bottom of the spray box along its length for spraying water to cool the hot-rolled steel on the conveying mechanism. A swing assembly is connected to one end of the spray box along its length, and the swing assembly drives the spray box to reciprocate around its own axis in a vertical plane. A flow-guiding and cooling mechanism, located below the conveying mechanism, is used to guide and cool the cooling water sprayed and falling from the nozzle.

2. The high-efficiency cooling device for steel rolling according to claim 1, characterized in that, The spray box is fixedly connected to a first rotating shaft at one end along its length and to a second rotating shaft at the other end. The other end of the first rotating shaft is rotatably connected to the inner wall of the cooling box, and the other end of the second rotating shaft rotatably passes through the side wall of the cooling box and is connected to the swing assembly.

3. The high-efficiency cooling device for steel rolling according to claim 2, characterized in that, The swing assembly includes a first link, a second link, a third link, and a first drive motor. One end of the second link is rotatably connected to one end of the first link, and the other end is rotatably connected to one end of the third link. The other end of the first link is fixedly connected to the second rotating shaft, and the other end of the third link is fixedly connected to the output end of the first drive motor. The first drive motor is fixedly mounted on the outside of the cooling box by a bracket.

4. The high-efficiency cooling device for steel rolling according to claim 1, characterized in that, The cooling mechanism includes a first guide plate and a second guide plate arranged alternately. The first guide plate is located above the second guide plate and is inclined downwards in the direction close to the second guide plate. The second guide plate is inclined downwards in the direction away from the first guide plate. There is a gap between the lower ends of the first guide plate and the second guide plate and the inner wall of the cooling box. The top surfaces of the first guide plate and the second guide plate are recessed with guide grooves along their length. The bottom surfaces of the first guide plate and the second guide plate are covered with condenser pipes, and cooling water flows in the condenser pipes.

5. The high-efficiency cooling device for steel rolling according to claim 4, characterized in that, A water tank is installed outside the cooling box, and a refrigeration unit is installed on one side of the water tank. One end of the condenser pipe is connected to the water outlet pipe, and the other end is connected to the return pipe. The other ends of the water outlet pipe and the other end of the return pipe are both connected to the water tank.

6. The high-efficiency cooling device for steel rolling according to claim 1, characterized in that, A first water pump is installed on the water inlet pipe.

7. The high-efficiency cooling device for steel rolling according to claim 5, characterized in that, A second water pump is installed on the outlet pipe, and a third water pump is installed on the return pipe.

8. The high-efficiency cooling device for steel rolling according to claim 1, characterized in that, A filter screen is installed inside the cooling box below the conveying mechanism, and the filter screen is arranged along the length of the cooling box.

9. A high-efficiency cooling device for steel rolling according to claim 8, characterized in that, The filter screen is symmetrically provided with sliding strips on both sides along its width direction, and the cooling box is symmetrically provided with sliding grooves on both sides along its width direction. The sliding grooves are provided along the length direction of the cooling box, and one end of the sliding grooves is connected to the opening of the cooling box. The sliding strips are slidably connected to the sliding grooves, and the sliding strips and the sliding grooves are fixed together by fasteners.

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