Temperature control device of hot-rolled bar cooling bed

Abstract

The utility model discloses a temperature control device for a hot rolling bar cooling bed, which relates to the field of cooling bed equipment and comprises tracks respectively arranged on two sides of the cooling bed, a shell spanning above the cooling bed, and two sides of the shell are arranged on the tracks in a sliding manner; the plurality of thermometers are arranged below the shell along the length direction of the cooling bed; the heat recovery structure is arranged on the shell, the heat recovery structure comprises a plurality of heat absorption ports and a reversible conveying pump, and the heat absorption ports are arranged in the direction of the cooling bed; the cooling structure is arranged on the shell, and the output end of the cooling structure faces the direction of the cooling bed; the heat insulation baffles are movably arranged at the two ends of the shell; the temperature control device can meet the requirements of different steel systems for certain room temperature structures and hardness, so that the cooling bed has the capabilities of multi-point temperature control, destressing, hydrogen removal and controllable lower cooling bed temperature, the production efficiency is improved, meanwhile, the heat of the cooling bed can be recycled, and energy waste is avoided.

Description

Technical Field

[0001] The utility model belongs to the field of cooling bed equipment, and more specifically, relates to a temperature control device for a hot-rolled bar cooling bed. Background Art

[0002] With the gradual increase in the market's demand for the quality of special steel bars, bar manufacturers not only need to meet production costs but also ensure requirements such as the structure, hardness, stress, and white spot sensitivity of round steel. The traditional natural cooling and straightening functions of the cooling bed can no longer meet the quality requirements of today's special round steel, and air cooling causes waste of thermal energy, which does not conform to the current green and energy-saving production environment. Currently, bar manufacturers are in a weak control link in terms of cooling bed process control and energy recovery. Especially for the control method under multiple steel types and multiple specifications in the cooling bed, using the waste heat of the round steel in the cooling bed to improve the room temperature structure of the steel, control the temperature of the steel when leaving the cooling bed, improve cutting hardness, eliminate thermal stress, and enhance the dehydrogenation effect, while recovering heat and utilization has great research value. Using the temperature control process method and equipment device to control the structure and physical properties of the hot-rolled bar cooling bed, taking into account heat energy recovery, has great practical value for improving bar quality, making full use of energy, enhancing production efficiency, and cost control.

[0003] Currently, the temperature control process of the cooling bed in the rolling mill is blank, unable to achieve structure control, stress removal, hydrogen removal, and control of the temperature of the steel when leaving the cooling bed, unable to reduce the workload for subsequent processes, with low production efficiency. At the same time, heat loss from the cooling bed causes waste of energy. Summary of the Utility Model

[0004] The purpose of the utility model is to address the deficiencies of the existing technology and provide a temperature control device for a hot-rolled bar cooling bed. This temperature control device can meet the certain room temperature structure and hardness requirements of different steel systems, enable the cooling bed to have the capabilities of multi-point temperature control, stress removal, hydrogen removal, and controllable temperature of the steel when leaving the cooling bed, improve production efficiency, and at the same time be able to recover the heat of the cooling bed and avoid energy waste.

[0005] To achieve the above purpose, the utility model provides a temperature control device for a hot-rolled bar cooling bed, including:

[0006] Tracks are respectively arranged on both sides of the cooling bed. A housing spans above the cooling bed, and both sides of the housing are slidably arranged on the tracks;

[0007] A plurality of thermometers are arranged below the housing along the length direction of the cooling bed;

[0008] A heat recovery structure is arranged on the housing. The heat recovery structure includes a plurality of heat absorption ports and a reversible transfer pump, and the heat absorption ports are arranged towards the direction of the cooling bed;

[0009] A cooling structure is arranged on the shell, and an output end of the cooling structure is arranged toward the cooling bed;

[0010] Heat insulation baffles are movably arranged at two ends of the shell.

[0011] Optionally, the shell is connected to the track via a support arm and a roller, the support arm includes a support and a lifting rod, the lifting rod is connected to the support via a lifting cylinder, and the lifting cylinder is control-connected to the thermometer.

[0012] Optionally, the roller is connected to a first rotating motor, and the first rotating motor is controllably connected to the thermometer.

[0013] Optionally, the heat recovery structure further comprises a hot gas delivery pipeline, a plurality of heat absorption pipes are arranged on the hot gas delivery pipeline, and one end of the hot gas delivery pipeline is connected to the hot gas storage tank via the reversible delivery pump.

[0014] Optionally, the cooling structure includes a delivery pipe and a fan, one end of the delivery pipe is connected to the output end of the fan, a plurality of air supply pipes are arranged on the delivery pipe, and air supply ports of the air supply pipes face the cooling bed.

[0015] Optionally, the cooling structure further includes an aerosol delivery pipe and an aerosol device, one end of the aerosol delivery pipe is connected to the aerosol device, a plurality of aerosol delivery pipes are arranged on the aerosol delivery pipe, and an outlet of the aerosol delivery pipe faces the cooling bed.

[0016] Optionally, the heat absorption port, the air supply port of the air supply pipe and the outlet of the aerosol transport pipe are arranged at intervals.

[0017] Optionally, the heat insulation baffle is hinged at the end of the shell, the heat insulation baffle is connected to the rotating motor, and the rotating motor is control-connected to the thermometer.

[0018] Optionally, the length of the track is not less than the length of the cooling bed.

[0019] Optionally, the width of the shell is not less than the width of the cooling bed.

[0020] The utility model provides a temperature control device for a hot-rolled bar cooling bed, which has the following beneficial effects:

[0021] 1. The temperature control device has wide process compatibility. The length of the track and the width of the shell can be determined according to the production line requirements and product characteristics. The position is flexible and adjustable. The heat recovery structure and the cooling structure can be used alone or in combination. The steel types can include high-quality carbon steel, alloy steel, gear steel, bearing steel, wear-resistant ball, low-alloy high-strength steel, etc. The specifications can cover φ12mm~φ300mm;

[0022] 2. The operation mode of the temperature control device is adjustable, and it can meet the requirements of certain room temperature structures and hardnesses of different steel grades through slow temperature drop, isothermal, and rapid temperature drop;

[0023] 3. The temperature control device has the capabilities of stress relief, hydrogen removal, and controllable temperature of the lower cooling bed, which can reduce the workload of subsequent slow cooling processes and improve production efficiency;

[0024] 4. The temperature control device can recover the heat of the cooling bed for secondary utilization or heat transfer, avoiding energy waste.

[0025] Other features and advantages of the present utility model will be described in detail in the subsequent specific implementation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] By describing the exemplary embodiments of the present utility model in more detail in conjunction with the drawings, the above and other objects, features, and advantages of the present utility model will become more obvious. Among them, in the exemplary embodiments of the present utility model, the same reference numerals generally represent the same components.

[0027] Figure 1 FIG. 1 shows a schematic structural diagram of a temperature control device for a hot-rolled bar cooling bed according to an embodiment of the present utility model.

[0028] DESCRIPTION OF THE REFERENCE NUMERALS:

[0029] 1. Rail; 2. Roller; 3. Support arm; 4. Heat absorption port; 5. Air supply port; 6. Aerosol nozzle; 7. Heat insulation baffle; 8. Thermometer; 9. Thermal insulation layer; 10. Housing; 11. Fan; 12. Aerosol device; 13. Aerosol conveying pipeline; 14. Conveying pipeline; 15. Hot gas conveying pipeline; 16. Reversible conveying pump; 17. Hot gas storage tank. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The following will describe the preferred embodiments of the present utility model in more detail. Although the following describes the preferred embodiments of the present utility model, it should be understood that the present utility model can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present utility model more thorough and complete, and to fully convey the scope of the present utility model to those skilled in the art.

[0031] The present utility model provides a temperature control device for a hot-rolled bar cooling bed, including:

[0032] Rails are respectively arranged on both sides of the cooling bed, and the housing straddles above the cooling bed, and both sides of the housing are slidably arranged on the rails;

[0033] A plurality of thermometers are arranged below the housing along the length direction of the cooling bed;

[0034] A heat recovery structure is provided on the housing. The heat recovery structure includes a plurality of heat absorption ports and a reversible transfer pump. The heat absorption ports are arranged facing the direction of the cooling bed.

[0035] A temperature reduction structure is provided on the housing. The output end of the temperature reduction structure is arranged facing the direction of the cooling bed.

[0036] Heat insulation baffles are movably arranged at both ends of the housing.

[0037] Specifically, the temperature control device movably arranges the housing above the cooling bed, and a thermometer, a heat recovery structure, and a temperature reduction structure are arranged on the cooling bed. When it is necessary to slowly cool the bars on the cooling bed, the heat insulation baffles can block the air circulation channels on the surface of the cooling bed, and the heat recovery structure can be started to let the reversible transfer pump drive the heat absorption ports to reversely convey hot air, so that the cooling speed of the bars is lower than the air cooling speed; when it is necessary to quickly cool the bars on the cooling bed, the heat insulation baffles can be opened to open the air circulation channels on the surface of the cooling bed, and the temperature reduction structure can be started to actively cool the bars, so that the cooling speed of the bars is higher than the air cooling speed; in this temperature control device, the heat released by the bars can be absorbed into the heat recovery structure through the heat absorption ports. When it is necessary to keep the temperature of the bars on the cooling bed unchanged, the heat can be sent back to the bars in the reverse direction to avoid the excessive loss of the heat of the bars.

[0038] Optionally, the housing is connected to the track through a support arm and rollers. The support arm includes a support and a lifting rod. The lifting rod is connected to the support through a lifting cylinder, and the lifting cylinder is connected to the thermometer for control.

[0039] Specifically, the housing can slide repeatedly on the track, so that the heat recovery structure and the temperature reduction structure can be moved to the places where the temperature of the bars needs to be regulated; in addition, in order to improve the rate of heat recovery or release of the heat absorption ports and improve the temperature reduction effect of the temperature reduction structure, the height of the housing can be reduced through the lifting cylinder; when it is necessary to quickly cool the bars, the height of the housing can be increased through the lifting cylinder, and the heat insulation baffles can be opened in cooperation, so that the contact area of the bar surface with the air is larger and the air flow is smoother, which can improve the cooling efficiency.

[0040] Optionally, the rollers are connected to a first rotating motor, and the first rotating motor is connected to the thermometer for control.

[0041] Specifically, a thermometer, a lifting cylinder, and a first rotating motor are provided in this temperature control device. When it is necessary to regulate the cooling method of the bars in a certain area on the cooling bed, the housing can be driven to slide through the first rotating motor, and then the lifting cylinder can be controlled to raise or lower the housing according to different cooling methods, and the temperature change of the bars can be monitored through the thermometer.

[0042] Optionally, the heat recovery structure further includes a hot gas delivery pipe, on which a plurality of heat absorption pipes are provided, and one end of the hot gas delivery pipe is connected to the hot gas storage tank through a reversible delivery pump.

[0043] Specifically, in the heat recovery structure, the hot gas storage tank is connected to each heat absorption pipe through the hot gas delivery pipe. When it is necessary to recover the heat of the bar, the reversible delivery pump can be started to store the heat in the hot gas storage tank through the heat absorption port, so that the heat on the surface of the bar can be taken away faster and the cooling of the bar can be accelerated; when it is necessary to slow down the cooling speed of the bar, the reversible delivery pump can be started to send the heat in the hot gas storage tank to the surface of the bar through the heat absorption port, and the heat insulation baffle can be closed to slow down the air flow on the surface of the bar, so that the cooling speed of the bar can be slowed down.

[0044] Optionally, the cooling structure includes a delivery pipe and a fan, one end of the delivery pipe is connected to the output end of the fan, and a plurality of air supply pipes are provided on the delivery pipe, and the air supply ports of the air supply pipes face the cooling bed.

[0045] Optionally, the cooling structure further includes an aerosol delivery pipe and an aerosol device, one end of the aerosol delivery pipe is connected to the aerosol device, and a plurality of aerosol delivery pipes are provided on the aerosol delivery pipe, and the outlets of the aerosol delivery pipes face the cooling bed.

[0046] Specifically, the cooling structure includes two cooling methods. One is to accelerate the air flow speed on the surface of the bar through the fan, and the other is to send cooling water to the surface of the bar through the aerosol device, so that the cooling speed of the bar can be accelerated; when the fan and the delivery pipe are started, the heat insulation baffle needs to be opened, and at the same time the height of the housing is increased, so that the air on the surface of the bar can flow faster, thereby further improving the cooling efficiency of the bar.

[0047] In one embodiment, the aerosol device is an aerosol generator that can be purchased on the market.

[0048] Optionally, the heat absorption port, the air supply port of the air supply pipe, and the outlet of the aerosol delivery pipe are arranged at intervals.

[0049] Specifically, a plurality of heat absorption ports, a plurality of air supply ports, and outlets of a plurality of aerosol delivery pipes are provided below the housing, and a structural configuration including one heat absorption port, one air supply port, and one outlet of the aerosol delivery pipe is uniformly arranged on the housing. In this way, when it is necessary to control the temperature of the bar in a certain area on the cooling bed, only the position of the housing needs to be adjusted once to complete the operations of absorbing heat, releasing heat, supplying air, and spraying water mist to the bar in this area, improving the work efficiency.

[0050] Optionally, the heat insulation baffle is hinged to the end of the housing, the heat insulation baffle is connected to a rotating motor, and the rotating motor is connected to the thermometer for control.

[0051] Specifically, heat insulation baffles are rotatably arranged at both ends of the heat insulation baffle. When the temperature control device slowly cools the bars in a certain area of the cooling bed, the housing can be lowered by a certain height, and then the heat insulation baffle is rotated to a perpendicular relationship with the housing. In this way, the housing and the heat insulation baffle form a lid shape, which can cover the surface of the bars, thereby slowing down the heat loss of the bars; when the temperature control device quickly cools the bars in a certain area of the cooling bed, the housing can be raised by a certain height, and then the heat insulation baffle is rotated to be in the same plane as the housing. In this way, the air flow on the surface of the bars is very smooth. When the cooling structure is started, the air flow speed on the surface of the bars can be increased, which can improve the cooling efficiency of the bars.

[0052] Optionally, the length of the track is not less than the length of the cooling bed.

[0053] Optionally, the width of the housing is not less than the width of the cooling bed.

[0054] Specifically, the length of the track is set to be greater than the length of the cooling bed. In this way, the housing can be freely moved along the track under the drive of the rollers, and the position of the housing can be flexibly adjusted, which is convenient for the temperature control device to control the temperature of the bars; the width of the housing is greater than the width of the cooling bed. A plurality of heat absorption ports and the output ends of the cooling structure are arranged on the lower surface of the housing. When it is not necessary to move the lateral position of the housing, the temperature of the bars can be controlled.

[0055] The temperature control device has three operating modes:

[0056] 1. Slow temperature drop mode of hot round steel cooling bed: By lowering the height of the housing, closing the heat insulation baffle, reversely blowing an appropriate amount of hot air or closing the heat absorption port, the hot round steel is cooled step by step locally or integrally on the cooling bed at a speed lower than the air cooling speed;

[0057] 2. Isothermal mode of hot round steel cooling bed: By lowering the height of the housing, closing the heat insulation baffle, and reversely blowing hot air at the heat absorption port, the hot round steel is isothermally stepped locally or integrally on the cooling bed in a state of constant temperature;

[0058] 3. Fast temperature drop mode of hot round steel cooling bed: By raising the height of the housing, opening the heat insulation baffle, blowing cold air at the air supply port or spraying aerosol from the aerosol nozzle, the hot round steel is cooled step by step locally or integrally on the cooling bed at a speed higher than the air cooling speed.

[0059] In addition, the temperature control device can combine the three temperature control modes for use.

[0060] Embodiment

[0061] As Figure 1 shown, the present invention provides a temperature control device for a hot rolling bar cooling bed, including:

[0062] Track 1 is respectively arranged on both sides of the cooling bed. The housing 10 straddles above the cooling bed, and both sides of the housing 10 are slidably arranged on the track 1. A heat preservation layer 9 is arranged inside the housing 10;

[0063] A plurality of thermometers 8 are arranged below the housing 10 along the length direction of the cooling bed;

[0064] A heat recovery structure is arranged on the housing 10. The heat recovery structure includes a plurality of heat absorption ports 4 and a reversible transfer pump 16, and the heat absorption ports 4 are arranged facing the direction of the cooling bed;

[0065] A cooling structure is arranged on the housing 10, and the output end of the cooling structure is arranged facing the direction of the cooling bed;

[0066] Heat insulation baffles 7 are movably arranged at both ends of the housing 10.

[0067] In this embodiment, the housing 10 is connected to the track 1 through a support arm 3 and a roller 2. The support arm 3 includes a support and a lifting rod. The lifting rod is connected to the support through a lifting cylinder, and the lifting cylinder is connected to the thermometer 8 for control.

[0068] In this embodiment, the roller 2 is connected to a first rotating motor, and the first rotating motor is connected to the thermometer 8 for control.

[0069] In this embodiment, the heat recovery structure further includes a hot gas transfer pipeline 15. A plurality of heat absorption tubes are arranged on the hot gas transfer pipeline 15, and one end of the hot gas transfer pipeline 15 is connected to a hot gas storage tank 17 through a reversible transfer pump 16.

[0070] In this embodiment, the cooling structure includes a transfer pipeline 14 and a fan 11. One end of the transfer pipeline 14 is connected to the output end of the fan 11. A plurality of air supply pipes are arranged on the transfer pipeline 14, and the air supply openings 5 of the air supply pipes face the cooling bed.

[0071] In this embodiment, the cooling structure further includes an aerosol transfer pipeline 13 and an aerosol device 12. One end of the aerosol transfer pipeline 13 is connected to the aerosol device 12. A plurality of aerosol transfer tubes are arranged on the aerosol transfer pipeline 13, and the aerosol nozzles 6 of the aerosol transfer tubes 13 face the cooling bed.

[0072] In this embodiment, the heat absorption ports 4, the air supply openings 5 and the aerosol nozzles 6 are arranged at intervals.

[0073] In this embodiment, the heat insulation baffle 7 is hinged to the end of the housing 10. The heat insulation baffle 7 is connected to a rotating motor, and the rotating motor is connected to the thermometer 8 for control.

[0074] In this embodiment, the length of the track 1 is not less than the length of the cooling bed.

[0075] In this embodiment, the width of the housing 10 is not less than the width of the cooling bed.

[0076] In summary, when the temperature control device controls the 42CrMoA hot-rolled round steel with a diameter of φ100mm to avoid the formation of bainite structure at room temperature, the control method is as follows: install three such temperature control devices on a cold bed with a length of 42 meters in the workshop, and set them as No. 1, No. 2, and No. 3 respectively. The length of each single temperature control device is 10 meters. The temperature control process requires that the temperature of the steel on the cold bed is not lower than 700°C. Combining with the principle of bainite formation, the cold bed position and the interval length (6 meters) corresponding to the bainite transformation temperature range (450 - 580°C) are measured by the thermometer 8. Move the temperature control devices No. 1 and No. 2 to the upper side of the cold bed through the roller 2 on the track 1, open the heat absorption port 4 and the reversible delivery pump 16 for forward heat absorption. Move the temperature control device No. 3 through the roller 2 on the track 1 so that the No. 3 temperature control device is located in the bainite transformation temperature range. Lower the distance between the housing 10 and the hot round steel 42CrMoA on the cold bed through the support arm 3, close the heat insulation baffle 7, close the air supply port 5, close the aerosol nozzle 6, open the heat absorption port 4 and the reversible delivery pump 16 for reverse blowing, so that the hot round steel 42CrMoA under the No. 3 temperature control device undergoes tissue transformation at a cooling rate lower than the bainite transformation rate, and then goes off the cold bed and is collected. Finally, the 42CrMoA hot-rolled round steel with a diameter of φ100mm without bainite structure is obtained.

[0077] When the temperature control device controls the temperature of the 45 steel hot-rolled round steel with a diameter of φ200mm going off the cold bed not to be higher than 300°C to avoid heat bending caused by stacking and slow cooling after going off the cold bed, the control method is as follows: install 4 such temperature control devices on a cold bed with a length of 36 meters in the workshop, and set the numbers as No. 1, No. 2, No. 3, and No. 4 in the stepping direction. The length of a single device is 8 meters. The temperature control process requires that the temperature of the steel on the cold bed is 800°C. Move the temperature control devices No. 1, No. 2, No. 3, and No. 4 to the upper side of the cold bed through the roller 2 on the track 1. Raise the distance between the housing 10 and the hot round steel 45 steel on the cold bed through the support arm 3. Open the heat insulation baffle 7. The temperature control device No. 1 opens the aerosol nozzle 6 and the aerosol device 12, and transports the aerosol to the upper part of the hot round steel 45 steel through the aerosol delivery pipeline 13 to quickly reduce the temperature of the round steel in this area. The temperature control devices No. 2 and No. 3 open the air supply port 5 and the fan 11, and transport the cold air to the upper part of the hot round steel 45 steel through the air delivery pipeline 14 to reduce the temperature of the round steel in this area. The temperature control device No. 4 opens the heat absorption port 4 and the reversible delivery pump 16 for forward heat absorption, and transports the heat of the cold bed to the hot gas storage tank 17 through the hot gas delivery pipeline 15. The temperature of the 45 round steel is detected in real time by the thermometer 8, and the aerosol and air volume are adjusted in time according to the feedback. Finally, the hot-rolled round steel with a temperature going off the cold bed lower than 300°C is obtained.

[0078] When controlling the reticular carbide grade of φ65mm GCr15 steel hot-rolled round steel, the control method of the temperature control device is as follows: Five temperature control devices are installed on a 50-meter-long cooling bed in the workshop. They are numbered 1#, 2#, 3#, 4#, and 5# in the stepping direction. The length of a single device is 10 meters. The temperature control process requires that the temperature of this steel type on the cooling bed is not lower than 850°C. The full-coverage temperature control is adopted in this workshop without moving the temperature control device. According to the temperature control process, the cooling bed range (18 meters from the upper surface of the cooling bed) corresponding to the carbide precipitation temperature range (850°C - 700°C) is measured by the thermometer 8. The temperature control devices 1# and 2# open the heat insulation baffle 7, raise the distance between the housing 10 and the hot round steel GCr15 steel on the cooling bed through the support arm 3, open the air supply port 5, close the heat absorption port 4, start the aerosol nozzle 6 and the aerosol device 12, and transport the aerosol to the upper part of the hot round steel 45 steel through the aerosol conveying pipeline 13 to quickly reduce the temperature of the round steel in this area and avoid carbide precipitation. The temperature control devices 3#, 4#, and 5# close the heat insulation baffle 7, lower the distance between the housing 10 and the hot round steel GCr15 steel on the cooling bed through the support arm 3, close the air supply port 5 and start the aerosol nozzle 6, and the heat absorption port 4 blows hot air reversely to make the round steel GCr15 step in a super slow cooling manner, increasing the hydrogen removal effect and at the same time raising the temperature of the lower cooling bed to ensure that the slow cooling temperature when entering the pit is not lower than 400°C. Finally, a GCr15 steel hot-rolled round without reticular carbide, without white spot defects, and with moderate hardness is obtained.

[0079] The embodiments of the present invention have been described above. The above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A cooling bed temperature control device for hot-rolled bars, characterized in that, Comprising: Tracks are respectively arranged on both sides of the cooling bed, the housing straddles above the cooling bed, and both sides of the housing are slidably arranged on the tracks; Multiple thermometers are arranged below the housing along the length direction of the cooling bed; A heat recovery structure is arranged on the housing, and the heat recovery structure includes multiple heat absorption ports and a reversible transfer pump, and the heat absorption ports are arranged facing the direction of the cooling bed; A cooling structure is arranged on the housing, and the output end of the cooling structure is arranged facing the direction of the cooling bed; Heat insulation baffles are movably arranged at both ends of the housing.

2. The cooling bed temperature control device for hot-rolled bars according to claim 1, characterized in that, The housing is connected to the track through a support arm and a roller, the support arm includes a support and a lifting rod, the lifting rod is connected to the support through a lifting cylinder, and the lifting cylinder is connected to the thermometer for control.

3. The cooling bed temperature control device for hot-rolled bars according to claim 2, characterized in that, The roller is connected to a first rotation motor, and the first rotation motor is connected to the thermometer for control.

4. The cold bed temperature control device for hot-rolled bars according to claim 1, characterized in that, The heat recovery structure further includes a hot gas transfer pipeline, multiple heat absorption pipes are arranged on the hot gas transfer pipeline, and one end of the hot gas transfer pipeline is connected to a hot gas storage tank through the reversible transfer pump.

5. The cooling bed temperature control device for hot-rolled bars according to claim 1, characterized in that, The cooling structure includes a transfer pipeline and a fan, one end of the transfer pipeline is connected to the output end of the fan, multiple air supply pipes are arranged on the transfer pipeline, and the air supply openings of the air supply pipes face the cooling bed.

6. The cooling bed temperature control device for hot-rolled bars according to claim 5, characterized in that, The cooling structure further includes an aerosol transfer pipeline and an aerosol device, one end of the aerosol transfer pipeline is connected to the aerosol device, multiple aerosol transfer pipes are arranged on the aerosol transfer pipeline, and the outlets of the aerosol transfer pipes face the cooling bed.

7. The cooling bed temperature control device for hot-rolled bars according to claim 6, characterized in that, The heat absorption ports, the air supply openings of the air supply pipes and the outlets of the aerosol transfer pipes are arranged at intervals.

8. The cold bed temperature control device for hot-rolled bars according to claim 1, characterized in that, The heat insulation baffle is hinged at the end of the housing, the heat insulation baffle is connected to a rotation motor, and the rotation motor is connected to the thermometer for control.

9. The cooling bed temperature control device for hot-rolled bars according to claim 1, characterized in that, The length of the track is not less than the length of the cooling bed.

10. The cold bed temperature control device for hot-rolled bars according to claim 1, characterized in that, The width of the housing is not less than the width of the cooling bed.

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