CN215696844U - Cooling device and cooling bed - Google Patents

Abstract

The utility model provides a cooling device and a cooling bed, and relates to the field of product cooling and the field of ferrous metallurgy. The cooling device comprises a nozzle, a flow dividing piece is arranged inside the nozzle, the flow dividing piece is movable in the nozzle, and the flow dividing piece is provided with a plurality of flow dividing ports so as to allow cooling liquid entering the nozzle to be sprayed out of a spraying port of the nozzle after passing through the plurality of flow dividing ports. According to cooling device and cold bed of this application, through setting up the inside nozzle that has the reposition of redundant personnel piece including a plurality of diffluence orifices, solved current cooling device and can't carry out even cooling and remaining coolant liquid to the rolling product and can gather the problem that forms water stain on the rolling product, guaranteed the cleanliness factor of rolling product when having realized evenly cooling to the rolling product.

Description

Cooling device and cooling bed

Technical Field

The application relates to the field of product cooling and the field of ferrous metallurgy, in particular to a cooling device and a cooling bed.

Background

In the production process of products such as rolled products, the products are usually cooled, and the cooling effect of the cooling process directly affects the final performance of the products. Taking the cooling bed in metallurgical steel rolling manufacturing as an example, the cooling bed can be used as a working table for effectively cooling rolled products, and the cooling capacity of the cooling bed limits the production capacity of the whole rolling line.

At present, generally adopt water-cooled mode to the rolling product to cool off, in actual production, in order to guarantee the cooling effect, need a large amount of coolant liquid to erode, so can't guarantee can carry out even cooling to the rolling product, influence the product quality after the cooling, the coolant liquid is easily remained on the rolling product surface simultaneously, and remaining coolant liquid can gather on the rolling product and form the water stain, can't guarantee the cleanliness factor of rolling product.

SUMMERY OF THE UTILITY MODEL

In view of the problem that current cooling device can't carry out even cooling and remaining coolant liquid to rolling product and can gather formation water stain on rolling product, the application provides a cooling device and cold bed, through setting up the inside nozzle that has the reposition of redundant personnel piece including a plurality of diffluence orifices, can form even, fine spraying through the twice reposition of redundant personnel to the coolant liquid, make cooling spray and the abundant even contact of rolling product, simultaneously because the liquid drop of spraying is fine and close to make can not gather formation water stain on the cooling surface of treating of rolling product, guarantee the quality after rolling product cools off.

According to an aspect of the present application, there is provided a cooling device including a nozzle, a flow dividing member is provided inside the nozzle, the flow dividing member is movable inside the nozzle, and the flow dividing member has a plurality of flow dividing ports to allow a cooling liquid entering the nozzle to be ejected from an ejection opening of the nozzle after passing through the plurality of flow dividing ports.

Preferably, the cooling device further includes a plurality of cooling pipes arranged at intervals in a first direction, each of the plurality of cooling pipes extending in a second direction and provided with a plurality of the nozzles at intervals in the second direction.

Preferably, the cooling device further comprises a liquid supply pipe which is communicated with the plurality of cooling pipes to supply the cooling liquid to the plurality of cooling pipes, and the liquid supply pipe is provided with a solenoid valve for adjusting the liquid supply flow of the liquid supply pipe.

Preferably, a distance between adjacent nozzles on each of the cooling pipes in the second direction is equal to 1/2 of a distance between adjacent cooling pipes in the plurality of cooling pipes in the first direction, and the spray angle of the spray from the spray opening is 110 to 120 degrees.

Preferably, the extending direction of the liquid supply pipe and the extending direction of the cooling pipes are perpendicular to each other, and the extending directions of the plurality of cooling pipes are parallel.

Preferably, the liquid supply pipe is provided with a shut-off valve for opening or closing the supply of the cooling liquid in the liquid supply pipe.

Preferably, a first flow space is formed inside the flow dividing member, a second flow space is formed between the flow dividing member and the inner wall of the nozzle, a part of the cooling liquid entering the nozzle flows into the first flow space, and another part of the cooling liquid entering the nozzle flows into the second flow space.

According to another aspect of the present application, there is provided a cooling bed comprising the cooling apparatus described above.

Preferably, the cooling bed comprises a static table, a movable table and a transmission mechanism, the transmission mechanism can drive the movable table to move relative to the static table, the static table is used for bearing a rolled product, the nozzle of the cooling device is arranged below the static table, the spray opening of the nozzle faces the direction opposite to the action direction of gravity, and the spray sprayed by the nozzle can contact with the rolled product.

Preferably, the cooling bed includes a plurality of stationary rack beams for supporting the stationary stage, the nozzles are provided at the end of the moving direction of the movable stage, and the nozzles are provided on both sides of the stationary rack beams in the moving direction of the movable stage.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 shows a schematic view of a nozzle of a cooling device according to an embodiment of the utility model;

FIG. 2 shows a schematic view of a cooling tube with a nozzle mounted thereon according to an embodiment of the utility model;

FIG. 3 shows a schematic view of an installation of a cooling tube and a supply tube according to an embodiment of the utility model;

FIG. 4 shows a schematic view of a cooling bed according to an embodiment of the utility model.

Icon: 1-a cooling device; 11-a nozzle; 111-a splitter; 1111-a shunt port; 112-a spray outlet; 12-a cooling tube; 13-a supply tube; 14-a solenoid valve; 15-a stop valve; 2-a static table; 3-a static rack beam; 4-moving the platform; 5-a transmission mechanism; 51-an electric motor; 52-a reducer; 53-drive beam; 54-moving rack beam; 6-an input device; 7-aligning the roller way; 8-an output device; 9-installing a foundation.

Detailed Description

The following detailed description is provided to assist the reader in obtaining a thorough understanding of the methods, devices, and/or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and/or systems described herein will be apparent to those skilled in the art in view of the disclosure of the present application. For example, the order of operations described herein is merely an example, which is not limited to the order set forth herein, but rather, variations may be made in addition to operations which must occur in a particular order, which will be apparent upon understanding the disclosure of the present application. Moreover, descriptions of features known in the art may be omitted for the sake of clarity and conciseness.

The features described herein may be embodied in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many possible ways to implement the methods, devices, and/or systems described herein that will be apparent after understanding the disclosure of the present application.

Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on," "connected to," coupled to, "over," or "overlying" another element, it may be directly "on," "connected to," coupled to, "over," or "overlying" the other element, or one or more other elements may be present therebetween. In contrast, when an element is referred to as being "directly on," "directly connected to," directly coupled to, "directly over" or "directly overlying" another element, there may be no intervening elements present.

As used herein, the term "and/or" includes any one of the associated listed items and any combination of any two or more of the items.

Although terms such as "first", "second", and "third" may be used herein to describe various elements, components, regions, layers or sections, these elements, components, regions, layers or sections should not be limited by these terms. Rather, these terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section referred to in the examples described herein may be termed a second element, component, region, layer or section without departing from the teachings of the examples.

For ease of description, spatial relationship terms such as "above … …," "upper," "below … …," and "lower" may be used herein to describe one element's relationship to another element as illustrated in the figures. Such spatial relationship terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "upper" relative to other elements would then be oriented "below" or "lower" relative to the other elements. Thus, the term "above … …" includes both an orientation of "above … …" and "below … …" depending on the spatial orientation of the device. The device may also be otherwise oriented (e.g., rotated 90 degrees or at other orientations) and the spatially relative terms used herein should be interpreted accordingly.

The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of the disclosure. The singular forms also are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," and "having" specify the presence of stated features, quantities, operations, elements, components, and/or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements, and/or combinations thereof.

Variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, may be expected. Thus, the examples described herein are not limited to the particular shapes shown in the drawings, but include changes in shape that occur during manufacturing.

The features of the examples described herein may be combined in various ways that will be apparent after understanding the disclosure of the present application. Further, while the examples described herein have a variety of configurations, other configurations are possible, as will be apparent after understanding the disclosure of the present application.

According to an aspect of the present application, a cooling device 1 is provided. Although the cooling apparatus 1 according to the embodiment of the present application is described below taking an application scenario of a cooling bed as an example, it should be understood that the application scenario of the cooling apparatus 1 according to the embodiment of the present application is not limited thereto, and it may also be used for other devices that need to provide cooling, such as for cooling of a cutting machine.

The cooling bed is a work table for effectively cooling rolled products in the metallurgical and steel rolling industry, the cooling device 1 comprises a nozzle 11, as shown in fig. 1, a flow dividing member 111 is arranged inside the nozzle 11, the flow dividing member 111 can move inside the nozzle 11, the flow dividing member 111 can be provided with a plurality of flow dividing ports 1111 to allow cooling liquid entering the nozzle 11 to be sprayed out of a spray port 112 of the nozzle 11 after passing through the plurality of flow dividing ports 1111, and the flow dividing member 111 can move inside the nozzle 11 under the driving of the cooling liquid entering the nozzle 11. Specifically, when the cooling liquid having a predetermined flow pressure enters the nozzle 11, a part of the cooling liquid enters the inside of the flow divider 111, another part of the cooling liquid enters a space formed by the flow divider 111 and the inner wall of the nozzle 11, the cooling liquid entering the space formed by the flow divider 111 and the inner wall of the nozzle 11 impacts the flow divider 111, the flow divider 111 moves at a high speed inside the nozzle 11, the cooling liquid entering the inside of the flow divider 111 is torn/divided into micron-sized small droplets having a certain initial speed through the flow dividing port 1111 of the flow divider 111 due to the movement of the flow divider 111, and the micron-sized small droplets are torn/divided again through the spray port 112 to form a cooling spray. In this way, via the cooling spray formed by the two tears/splits, a more uniform, fine spray can be formed, cooling the rolled product and producing a uniform cooling effect. Preferably, the flow divider 111 may be formed in the form of a piston, and correspondingly, the nozzle 11 may be a centrifugal nozzle with a stainless steel piston.

As shown in fig. 2 and 3, the cooling apparatus 1 further includes a plurality of cooling pipes 12, the plurality of cooling pipes 12 being arranged at intervals in the first direction, each of the plurality of cooling pipes 12 extending in the second direction and being provided with a plurality of nozzles 11 at intervals in the second direction, a distance between adjacent nozzles 11 on each cooling pipe 12 in the second direction being equal to 1/2 of a distance between adjacent cooling pipes 12 in the first direction, an angle of the cooling spray from the spray opening 112 being 110 degrees to 120 degrees, such that the nozzles 11 are regularly arranged on a surface formed by the first direction and the second direction, and to ensure that the cooling sprays from the plurality of nozzles 11 are spatially superposed, so that the surface to be cooled of the rolled product can be brought into full contact with the cooling sprays, all parts of the rolled product can be cooled, and the quality of the cooled rolled product is ensured.

The cooling device 1 further comprises a liquid supply pipe 13, the liquid supply pipe 13 is communicated with the cooling pipes 12 to supply cooling liquid to the cooling pipes 12, an electromagnetic valve 14 for adjusting the liquid supply flow of the liquid supply pipe 13 is arranged on the liquid supply pipe 13, the electromagnetic valve 14 can control the flow of the cooling liquid entering the liquid supply pipe 13, and further control the flow of the cooling liquid entering the nozzle 11, so as to control the flow and the speed of the cooling spray sprayed from the spray opening 112, and the cooling device 1 can be adaptively adjusted according to different use environments to meet requirements of different use environments. Here, the coolant may be, for example, cooling water.

Preferably, the flow rate of the cooling fluid of the nozzle 11 is between 4.5 and 6 litres per minute, at which time the nozzle 11 is able to emit enough cooling spray per minute in contact with the surface to be cooled of the rolled product to reach a predetermined temperature after cooling, ensuring the quality of the rolled product after cooling, ready for the next working step of the rolled product.

In addition, the liquid supply pipe 13 is also provided with a stop valve 15, the stop valve 15 can control whether the cooling liquid enters the nozzle 11 or not, so that an operator can select whether to use the cooling device 1 or not according to the type of the rolled product, if the type of the rolled product does not need to use the cooling device 1 and only needs to carry out natural cooling, the stop valve 15 can be closed at the moment, the cooling liquid does not enter the liquid supply pipe 13 any more, and the cooling device 1 stops running at the moment.

According to another aspect of the present application, there is provided a cooling bed, as shown in fig. 4, comprising a cooling device 1 as described above, as shown, the cooling bed comprising a stationary table 2 and a movable table 4, the stationary table 2 being formed with a bearing surface, the stationary table 2 being capable of bearing a rolled product which is transported to the cooling bed via an input device 6 after rolling. A movable platform 4 is arranged below the static platform 2, and the movable platform 4 and the static platform 2 are arranged at intervals and can move relatively relative to the static platform 2 to drive the static platform 2 to move. Specifically, the movable stage 4 is movable between a first position and a second position in the vertical direction and movable in the horizontal direction, the movable stage 4 is separated from the stationary stage 2 at the first position, the movable stage 4 is movable from the first position to the second position, and the stationary stage 2 is supported at the second position so that the stationary stage 2 is separated from the stationary rack beam 3 and supported by the movable stage 4, and the movable stage 2 can be brought into movement in the horizontal direction by the movement of the movable stage 4 in the horizontal direction.

Specifically, quiet platform 2 includes a plurality of quiet racks, and every quiet rack below is provided with the quiet rack roof beam 3 with quiet rack complex, and the extending direction of quiet rack roof beam 3 is perpendicular with the direction of motion of moving platform 4, and quiet rack roof beam 3 is used for supporting quiet rack. The movable platform 4 comprises a plurality of movable racks, the movable racks are connected with the transmission mechanism 5, the transmission mechanism 5 comprises a motor 51, a speed reducer 52, a transmission beam 53 and a movable rack beam 54, power generated by the motor 51 is reduced in speed through the speed reducer 52 and then transmitted to the transmission beam 53, so that the movable rack beam 54 in contact with the transmission beam 53 moves, the movable rack beam 54 supports the movable racks to move from a first position to a second position so as to enable the movable racks to be in contact with the fixed racks, and then the movable rack beam 54 moves along the horizontal direction to drive the movable racks to move so as to enable the fixed racks to move in the horizontal direction, so that the fixed platform 2 moves in the horizontal direction along the second direction, such as the extension direction of the cooling pipe 12 in the above embodiment.

The cooling pipe 12 of the cooling device 1 is arranged below the movable table 4 along the gravity action direction so that the distance between the nozzle 11 and the movable table 4 can meet a preset distance, and the preset distance can be adjusted adaptively according to the type of a rolled product and the model of a cooling bed, so that the cooling spray is ensured to be in full contact with the surface to be cooled of the rolled product, water stains are not formed on the surface of the rolled product, and the quality of the rolled product after cooling is ensured.

In addition, the direction of the spray opening 112 is opposite to the gravity action direction, so that the speed direction of the cooling spray sprayed from the spray opening 112 is opposite to the gravity action direction, the cooling spray with a certain speed impacts the surface to be cooled of the rolled product, the cooling spray and the surface to be cooled of the rolled product are subjected to reactions such as forced convection mixing, surface evaporation, liquid film nucleation boiling, secondary nucleation and the like to enhance heat transfer, the cooling spray is evaporated instantly, a large amount of heat is taken away in the evaporation process, and the rolled product is cooled. In addition, because the speed direction of the cooling spray is opposite to the gravity action direction, the residual cooling liquid after the cooling spray is cooled can fall down due to the gravity of the cooling spray, water stains can not be formed on the surface of a rolled product, and the cleanness of the rolled product after cooling is ensured.

Preferably, the number of nozzles 11 can be two, two nozzles 11 set up respectively at the terminal end along moving 4 moving direction on the platform, nozzle 11 sets up the both sides at quiet rack beam 3 on moving 4 moving direction, so, rolled product after rolling can carry out natural cooling earlier when moving on the cold bed, make the temperature of rolled product cool off via cooling device 1 after can tentatively reducing, can avoid cooling spray direct with just accomplish rolled product contact, avoid the phase transition temperature of rolled piece, guarantee that rolled product's organizational performance is stable, it receives the influence to avoid rolled product at cooling process quality.

In addition, the cooling bed further comprises an alignment roller way 7 and an output device 8, the output device 8 is arranged at the tail end of the cooling bed along the moving direction of the movable table 4, the output device 8 can output the cooled rolled product to perform a subsequent sizing process, the alignment roller way 7 is arranged on the other side, opposite to the side provided with the output device 8, of the cooling device 1, and the alignment roller way 7 can align the end portion of the rolled product entering the cooling bed to prepare for the subsequent sizing process.

In addition, the liquid supply pipe 13 can be communicated with a cooling liquid system of a workshop and is fixed on the installation foundation 9 through a pipe clamp, no additional cooling liquid supply pipe is needed, and the installation and the use of the cooling bed can be facilitated. The installation base 9 may be, for example, an installation platform or the ground.

Taking a stepping cooling bed used for cooling hot rolled stainless steel sections and bars in the ferrous metallurgy industry as an example, the temperature of the stainless steel sections and bars is about 350 ℃, stainless steel sections and bars to be cooled are conveyed above the stepping cooling bed, an industrial cooling water main pipeline is arranged below the cooling bed, and considering the use of the sections and the bars, the tooth pitch of the stepping cooling bed is relatively large, the number of actual cooling rolled pieces is small, and the actual cooling area of the cooling bed is insufficient, so that the rolling capacity requirement of an upstream rolling mill cannot be met by cooling rolled products only by adopting a natural cooling mode, and the temperature requirement required by equipment such as a downstream straightening machine cannot be met. When the cooling bed comprising the cooling device according to the embodiment of the application is adopted, the cooling pipes are arranged below the cooling bed and fixed on the last group of static racks along the moving direction of the cooling bed, the liquid supply pipe communicated with the cooling pipes can be directly connected with the main industrial cooling water pipeline to supply water to the cooling device, the width of the cooling bed is 120 meters, the distance between the adjacent cooling pipes 12 along the first direction is 1200 millimeters (mm), two nozzles 11 are arranged on each cooling pipe 12, the distance between the nozzles 11 along the second direction is 600mm, the liquid supply pipe can be directly connected with the main industrial cooling water pipeline, the diameter of the main industrial cooling water pipeline 13 is 73mm, the diameter of each cooling pipe 12 is 27mm, the water supply pressure in the liquid supply pipe 13 is 0.4MPa to 0.6MPa, the water supply temperature is 32 ℃, the nozzle flow is 4.5L/min to 6L/min, and the angle of the cooling spray sprayed by the nozzles 11 is 115 degrees. By adopting the arrangement, the phase transition temperature of the stainless steel section and the bar is avoided, the uniform cooling effect is ensured, the structural performance is stable, the problem that the temperature of the stainless steel section and the bar is higher after the stainless steel section and the bar are cooled by a cooling bed is solved, no water is accumulated on the surface of the cooled stainless steel section and the cooled bar, the condition is created for the subsequent straightening process, the yield is improved, and the cooling bed is not the bottleneck process which restricts the rolling line yield any more.

The distance between the adjacent cooling pipes 12 in the first direction, the number of nozzles 11 provided in each cooling pipe 12, and the distance between the adjacent nozzles 11 in the second direction in each cooling pipe 12 are not fixed values, and can be adjusted adaptively according to the usage environment, so that the cooling apparatus 1 can be adapted to different usage environments.

According to the cooling device of this application, through setting up the inside nozzle that has the reposition of redundant personnel piece including a plurality of diffluence orifices, can form even, fine and close spraying through the twice reposition of redundant personnel to the coolant liquid for can not form water stain in the waiting cooling surface of rolling product when cooling spraying and rolling product fully contact, guarantee the rolling product and carry out the quality after cooling.

In addition, according to the cooling device of this application, through set up the nozzle along the second direction on the cooling tube that first direction interval was arranged for the nozzle is evenly set up on the surface that first direction and second direction formed, can guarantee that a plurality of nozzles spun cooling spray can form the overlap in space, guarantees the quality of the rolled product after the cooling.

In addition, according to the cooling device of this application, through the solenoid valve on the feed pipe, can make the flow that can control the coolant liquid that gets into the feed pipe for this cooling device can carry out the adaptability adjustment according to the service environment of difference in order to satisfy the demand under the different service environment.

Furthermore, according to the cooling device of the present application, by controlling the distance between the adjacent nozzles on each cooling pipe to be 1/2, which is the distance between the adjacent cooling pipes, and the spray angle from the spray outlets, the cooling sprays from the plurality of nozzles can be spatially overlapped, ensuring that the surfaces to be cooled of the rolled product can all be in contact with the cooling sprays.

In addition, according to the cooling device of this application, through set up the stop valve on the liquid feed pipe, can make this cooling device can select whether to use according to the kind of rolling product, avoid the waste to the coolant liquid.

In addition, according to the cooling device of the application, the cooling liquid can be uniformly and finely sprayed through the flow dividing piece which is formed in the form of the piston in the nozzle, and the quality of the rolled product after cooling is ensured.

According to the cooling bed of this application, through setting up the nozzle in the quiet platform below of cooling bed, make cooling spray and the rolling product wait that the abundant contact of cooling surface can not form the water stain on rolling product surface simultaneously, guarantee the quality after the cooling of rolling product.

In addition, according to the cooling bed of this application, through setting up the nozzle at the terminal department of the direction of motion of moving the platform, can avoid the cooling spray direct with just carry out the product contact after rolling, guarantee the quality after the cooling of rolling product.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A cooling device comprising a nozzle, a flow divider disposed within the nozzle, the flow divider being movable within the nozzle, and the flow divider having a plurality of flow dividing ports to allow cooling fluid entering the nozzle to pass through the plurality of flow dividing ports and exit an atomizing orifice of the nozzle.

2. The cooling device according to claim 1, further comprising a plurality of cooling pipes arranged at intervals in a first direction, each of the plurality of cooling pipes extending in a second direction and provided with a plurality of the nozzles at intervals in the second direction.

3. The cooling device according to claim 2, further comprising a liquid supply pipe communicating with the plurality of cooling pipes to supply the plurality of cooling pipes with the cooling liquid, the liquid supply pipe being provided with a solenoid valve for adjusting a liquid supply flow rate of the liquid supply pipe.

4. The cooling apparatus of claim 2, wherein a distance between adjacent nozzles on each of the cooling tubes in the second direction is equal to 1/2 of a distance between adjacent cooling tubes in the plurality of cooling tubes in the first direction,

the spraying angle sprayed out from the spraying opening is 110-120 degrees.

5. A cooling apparatus according to claim 3, wherein an extending direction of the liquid supply pipe and an extending direction of the cooling pipe are perpendicular to each other, and the extending directions of the plurality of cooling pipes are parallel.

6. A cooling arrangement according to claim 3, characterised in that the supply pipe is provided with a shut-off valve for opening or closing the supply of cooling liquid in the supply pipe.

7. The cooling device as claimed in claim 1, wherein a first flow space is formed inside the flow dividing member, a second flow space is formed between the flow dividing member and the inner wall of the nozzle, a part of the cooling liquid entering the nozzle flows into the first flow space, and another part of the cooling liquid entering the nozzle flows into the second flow space.

8. A cold bed, characterized in that it comprises a cooling device according to any one of claims 1-7.

9. The cooling bed according to claim 8, characterized in that it comprises a static table, a movable table and a transmission mechanism capable of driving the movable table to move relatively with respect to the static table, the static table being used to carry the rolled product,

the nozzles of the cooling device are arranged below the stationary table, the spray outlets of the nozzles are directed in a direction opposite to the direction of action of gravity, and the spray from the nozzles is able to come into contact with the rolled product.

10. The cooling bed according to claim 9, wherein the cooling bed comprises a plurality of static rack beams for supporting the static table,

the nozzle is arranged at the tail end of the moving direction of the moving platform, and the nozzle is arranged on two sides of the static rack beam in the moving direction of the moving platform.

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