Rapid cooling method for precision heat treatment steel belt

Abstract

The invention belongs to the technical field of steel strips, particularly relates to a rapid cooling method for a precision heat treatment steel strip, and provides the following scheme aiming at the problems that the existing four-time bending is adopted, a limiting structure is not provided, the steel strip is easy to deform, and immersion cooling is low in heat dissipation efficiency and effect. The bottom of the middle end of the inner side of the cooling box is rotationally connected with a supporting roller, the top of the cooling box is in bolted connection with a hydraulic cylinder, the output end of the hydraulic cylinder is in bolted connection with a sliding frame, the bottom of the sliding frame is rotationally connected with a pressing roller, and the top and the bottom of the cooling box are both in bolted connection with a precise heat treatment steel belt rapid cooling device. According to the steel belt cooling device, the steel belt can be always kept in a flat state in the cooling process, deformation of the steel belt due to sudden change of cold and hot can be avoided, by adjusting the spraying angle of the atomization nozzle and the distance between the atomization nozzle and the steel belt, the steel belt can be atomized and cooled after the atomization nozzle sprays atomized cooling water, and the cooling efficiency and effect are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel strips, in particular to a rapid cooling method of precision heat-treated steel strips. BACKGROUND

[0002] The rapid cooling of precision heat-treated steel strips is a key process link, which has a decisive influence on the microstructure, mechanical properties (such as strength, hardness, toughness), dimensional accuracy, flatness and residual stress of the final product. The Chinese patent document with application number 202210463815.8 discloses a rapid cooling device and method of precision heat-treated steel strips, which includes a cooling bin, an injection pipe, a lead-out piece, a connecting pipe, a steel strip, a drain pipe, an upper guide roller, a lower guide roller and an auxiliary device. The auxiliary device is provided at the lower end of the cooling bin, and the auxiliary device is provided with a fitting assembly. The fitting assembly is divided into upper and lower net plates. The steel strip can directly pass through the net plate. The net plate is fitted on the upper and lower surfaces of the steel strip under the action of the centering mechanism. The net plate is driven by the pushing mechanism to make the net plate reciprocate, so as to quickly lead out the heat on the surface of the steel strip. The automation effect is good, and the work efficiency is effectively improved. The adjusting mechanism is provided on the top of the net plate at the upper end. The adjusting mechanism is connected with the sweeping plate at the upper end. The adjusting mechanism can adjust the sweeping plate to align with the water surface. The adjusting mechanism can automatically scrape the floating sludge to the right end while stirring the cooling liquid. The automation effect is good, and the functionality is strong.

[0003] However, the rapid cooling device and method of precision heat-treated steel strips also have some problems. For example, the device guides the steel strip through the upper and lower rollers. During the guiding process, the steel strip is bent at 90 degrees four times, and the bending is realized inside the cooling device. In addition, the device does not have a pressing limit structure. Such a setting is easy to cause the steel strip to deform during cooling, affecting the stable cooling process. Moreover, the steel strip is immersed in water for cooling, but there is no structure for rapid water replacement, which causes the cooling water around the steel strip to be heated, affecting the cooling efficiency. SUMMARY

[0004] Based on the background technology, the steel strip is bent four times and has no limit structure, which is easy to cause the steel strip to deform. Moreover, the steel strip is immersed in water for cooling, which has low heat dissipation efficiency and effect. The present application provides a rapid cooling method of precision heat-treated steel strips.

[0005] The application provides a rapid cooling method for precision heat-treated steel strips, which comprises a cooling box, a support roller rotatably connected to the bottom of the middle end of the inner side of the cooling box, a hydraulic cylinder boltedly connected to the top of the cooling box, a sliding frame boltedly connected to the output end of the hydraulic cylinder, a compression roller rotatably connected to the bottom of the sliding frame, and a rapid cooling device for precision heat-treated steel strips boltedly connected to the top and bottom of the cooling box, wherein the rapid cooling device for precision heat-treated steel strips comprises a support plate, a transmission box, a connecting frame, an atomizing nozzle, an adjusting mechanism, a water spraying mechanism and a lifting mechanism, the support plate is boltedly connected to the transmission box, the shaft of the connecting frame is hingedly connected to the opening on the right side of the support plate, the hole of the connecting frame is clamped to the surface of the atomizing nozzle, the adjusting mechanism is hingedly connected to the connecting frame, the water spraying mechanism is communicated with the atomizing nozzle, and the lifting mechanism is boltedly connected to the transmission box. The rapid cooling method for precision heat-treated steel strips comprises the following steps: S1: the precision heat-treated steel strip is inserted into the cooling box, the support roller supports the steel strip upwards, and the water source of the spraying mechanism is turned on; S2: the hydraulic cylinder drives the sliding frame to move downwards, the sliding frame drives the compression roller to move downwards, and the compression roller flattens the steel strip on the support roller; S3: the lifting mechanism drives the transmission box to lift, the transmission box drives the support plate to move, and the support plate drives the connecting frame and the atomizing nozzle to approach the steel strip; S4: the adjusting mechanism drives the connecting frame to rotate, the connecting frame drives the atomizing nozzle to rotate, and the angle of the atomizing nozzle for spraying and cooling the steel strip is adjusted; S5: the spraying mechanism pumps water into the atomizing nozzle, the atomizing nozzle sprays the atomized water on the steel strip, the high-speed moving water mist is used for cooling the steel strip, the combination of the support roller and the compression roller does not need the steel strip to be bent, the steel strip can always keep flat during the cooling process, the deformation of the steel strip due to the sudden change of temperature can be avoided, the spraying angle of the atomizing nozzle and the distance between the atomizing nozzle and the steel strip are adjusted, the atomizing nozzle sprays the atomized cooling water, the atomizing cooling is performed on the steel strip, and the cooling efficiency and effect are improved.

[0006] Preferably, the adjusting mechanism comprises an adjusting motor, a worm, a worm wheel and a transmission assembly, the surface of the adjusting motor is boltedly connected to the inside of the transmission box, the output end of the adjusting motor is key-connected to the connecting end of the worm, the surface of the worm is meshed with the teeth of the worm wheel, the shaft of the worm wheel is rotatably connected to the inside of the transmission box, the worm wheel is hingedly connected to the transmission assembly, the power supply of the adjusting motor is turned on, the power supply is an external power supply or an internal power supply, the power cord is of a waterproof and high-temperature-resistant type, the adjusting motor is fixed by the transmission box, the stability of the operation of the adjusting motor is ensured, the adjusting motor drives the worm to rotate, the worm drives the worm wheel to rotate, the worm and the worm wheel have a self-locking function, and the worm wheel is prevented from driving the worm to rotate.

[0007] Preferably, the transmission assembly comprises a hinged rod, a toothed disc, a rack and a transmission rod, the surface of the worm gear is hinged to the right end of the hinged rod, the left end of the hinged rod is hinged to the surface of the toothed disc, the teeth of the toothed disc are engaged with the top of the rack, the right end of the rack is hinged to the left end of the transmission rod, the right end of the transmission rod is hinged to the side of the connecting frame, the worm gear and the hinged rod are eccentric, the worm gear can drive the hinged rod to move to the right, the hinged rod can drive the toothed disc to rotate, the toothed disc can drive the rack to move to the left, the rack can drive the transmission rod to move to the left, and the transmission rod can drive the connecting frame to rotate.

[0008] Preferably, the surface of the rack is slidingly connected with a sliding sleeve, the sliding sleeve is bolted to the support plate, the shaft center of the toothed disc is rotatably connected with the inside of the transmission box, the toothed disc penetrates the opening of the support plate, the rack is slidingly arranged with the sliding sleeve through the sliding rail, the rack is guided, the rack facilitates driving the transmission rod, and the toothed disc is rotatably arranged with the transmission box through the bearing, so as to ensure the stability of the rotation of the toothed disc.

[0009] Preferably, the water spraying mechanism comprises a water inlet pipe, a communication frame, a corrugated water pipe and a pressurizing assembly, the water outlet end of the water inlet pipe is communicated with the water inlet end of the communication frame, the surface of the communication frame is bolted to the opening of the cooling box, the communication frame is communicated with the corrugated water pipe, the corrugated water pipe is communicated with the pressurizing assembly, the water inlet pipe is injected with cooling water, after the cooling water enters the water inlet pipe, the water inlet pipe injects the cooling water into the communication frame, the communication frame can inject the cooling water into the inside of the corrugated water pipe, the corrugated water pipe adopts a corrugated pipe structure that can be stretched and contracted, facilitating the movement of the support plate, and the corrugated water pipe can inject the cooling water into the inside of the pressurizing assembly.

[0010] Preferably, the pressurizing assembly comprises a water tank, a high-pressure water pump and an explosion-proof hose, the water outlet end of the corrugated water pipe is communicated with the water inlet end of the water tank, the water tank is bolted to the support plate, the water outlet end of the water tank is communicated with the water inlet end of the high-pressure water pump, the water outlet end of the high-pressure water pump is communicated with the water inlet end of the explosion-proof hose, and the water outlet end of the explosion-proof hose is communicated with the water inlet end of the atomizing nozzle, the corrugated water pipe can inject the cooling water into the water tank, a one-way valve can be arranged at the connection between the two, the water tank temporarily stores the cooling water, the power supply of the high-pressure water pump is connected, the high-pressure water pump can extract the cooling water in the water tank, the high-pressure water pump pumps the cooling water into the explosion-proof hose, and the explosion-proof hose can pump the cooling water into the atomizing nozzle.

[0011] Preferably, the lifting mechanism comprises a transmission frame, a lifting motor, a main bevel gear, a secondary bevel gear, a main sprocket and a lifting assembly, the transmission frame is bolted to the support plate, the surface of the lifting motor is bolted to the inside of the transmission frame, the output end of the lifting motor is keyed to the shaft of the main bevel gear, the teeth of the main bevel gear are engaged with the teeth of the secondary bevel gear, the secondary bevel gear is keyed to the main sprocket, the shaft of the main sprocket is rotatably sleeved to the inside of the transmission frame, the main sprocket is keyed to the lifting assembly, the power supply of the lifting motor is turned on, the power supply adopts an external power supply or an internal power supply, the lifting motor can be controlled through a controller, the lifting motor can drive the main bevel gear to rotate, the main bevel gear can drive the secondary bevel gear to rotate, the size of the main bevel gear is smaller than that of the secondary bevel gear, the secondary bevel gear can be decelerated, the secondary bevel gear can drive the main sprocket to rotate, and the main sprocket can drive the lifting assembly to rotate.

[0012] Preferably, the lifting assembly comprises a chain, a secondary sprocket, a lead screw, a sliding cylinder and a sliding rod, the teeth of the main sprocket are engaged with the inside of the chain, the inside of the chain is engaged with the teeth of the secondary sprocket, the shaft of the secondary sprocket is keyed to one end of the lead screw, the lead screw is rotatably sleeved to the transmission frame, the threads of the lead screw are threadedly connected with the screw holes of the sliding rod, the surface of the sliding rod is slidably connected with the inside of the sliding cylinder, one end of the sliding cylinder is bolted to the inside of the cooling box, the sliding rod is bolted to the transmission box, the main sprocket can drive the chain to rotate, the chain can drive the secondary sprocket to rotate, the radius of the main sprocket is one third of the radius of the secondary sprocket, the secondary sprocket can be decelerated, the control effect can be improved, the secondary sprocket can drive the lead screw to rotate, the lead screw can drive the sliding rod to move towards the steel belt through threads, the sliding rod is slidably arranged with the sliding cylinder through a sliding rail, the sliding rod can be guided, and the sliding rod can drive the transmission box to move towards the steel belt.

[0013] Preferably, the left side of the support plate is welded with a guide cover, the air outlet of the guide cover is communicated with an exhaust pump, the air outlet end of the exhaust pump is communicated with a corrugated air pipe, the air outlet end of the corrugated air pipe is communicated with a connecting sleeve, the connecting sleeve is bolted to the cooling box, the air outlet end of the connecting sleeve is communicated with an exhaust pipe, the power supply of the exhaust pump is turned on, the exhaust pump can generate suction in the inside of the guide cover, the guide cover can receive the high-speed water mist sprayed to the left by the atomizing nozzle, so that the exhaust pump can conveniently extract the water mist into the corrugated air pipe, and the corrugated air pipe can guide the water mist into the inside of the connecting sleeve.

[0014] Preferably, the two sides of the cooling box are rotatably connected with supporting rollers, the top of the supporting roller is aligned with the top of the supporting roller, the two precise heat treatment steel belt rapid cooling devices are a pair, the supporting roller is used for supporting the steel belt and lifting the steel belt, and the two precise heat treatment steel belt rapid cooling devices cool and lower the temperature of the top and the bottom of the steel belt respectively.

[0015] The beneficial effects of the present application are as follows: 1. The support roller supports the steel strip upwards, the hydraulic cylinder can drive the slide to move downwards, the slide can drive the pressure roller to move downwards, and the pressure roller can flatten the steel strip on the support roller; 2. The lifting mechanism can drive the transmission box to rise and fall, the transmission box can drive the support plate to move, the support plate can drive the connecting frame and the atomizing nozzle to approach the steel belt, and the adjusting mechanism can drive the connecting frame to rotate to adjust the spray angle of the atomizing nozzle. By combining support rollers and pressure rollers, the steel strip can remain flat during the cooling process without bending, thus preventing deformation due to sudden temperature changes. By adjusting the spray angle and distance between the atomizing nozzle and the steel strip, the atomizing nozzle can spray atomized cooling water to cool the steel strip, increasing the efficiency and effectiveness of cooling. Attached Figure Description

[0016] Figure 1 This is a front view schematic diagram of the present invention; Figure 2 This is a rear view schematic diagram of the support plate proposed in this invention; Figure 3 This is a right-side internal view of the lifting mechanism proposed in this invention; Figure 4 This is a perspective view of the worm gear proposed in this invention; Figure 5 This is a flowchart illustrating the workflow proposed in this invention.

[0017] In the diagram: 1. Cooling box; 2. Support roller; 3. Hydraulic cylinder; 4. Slide; 5. Pressure roller; 6. Support plate; 7. Transmission box; 8. Connecting frame; 9. Atomizing nozzle; 10. Adjusting motor; 11. Worm gear; 12. Worm wheel; 13. Hinge rod; 14. Gear plate; 15. Rack; 16. Transmission rod; 17. Sliding sleeve; 18. Water inlet pipe; 19. Connecting frame; 20. Corrugated water pipe; 21. Water tank; 22. High-pressure water pump; 23. Explosion-proof hose; 24. Transmission frame; 25. Lifting motor; 26. Main bevel gear; 27. Secondary bevel gear; 28. Main sprocket; 29. ​​Chain; 30. Secondary sprocket; 31. Lead screw; 32. Slide cylinder; 33. Slide rod; 34. Guide cover; 35. Exhaust pump; 36. Corrugated duct; 37. Connecting sleeve; 38. Exhaust pipe. Detailed Implementation

[0018] The present invention will be further explained below with reference to specific embodiments.

[0019] Reference Figures 1-5 , Example The embodiment proposes a rapid cooling method for precision heat-treated steel belt, which comprises a cooling box 1, a support roller 2 rotatably connected to the bottom of the middle end of the inner side of the cooling box 1, a hydraulic cylinder 3 bolted to the top of the cooling box 1, a sliding frame 4 bolted to the output end of the hydraulic cylinder 3, a compression roller 5 rotatably connected to the bottom of the sliding frame 4, and a rapid cooling device for precision heat-treated steel belt bolted to the top and bottom of the cooling box 1. The rapid cooling device for precision heat-treated steel belt comprises a support plate 6, a transmission box 7, a connecting frame 8, an atomizing nozzle 9, an adjusting mechanism, a water spraying mechanism, and a lifting mechanism. The support plate 6 is bolted to the transmission box 7, the shaft of the connecting frame 8 is hingedly connected to the opening on the right side of the support plate 6, the hole of the connecting frame 8 is clamped to the surface of the atomizing nozzle 9, the adjusting mechanism is hingedly connected to the connecting frame 8, the water spraying mechanism is communicated with the atomizing nozzle 9, and the lifting mechanism is bolted to the transmission box 7. The rapid cooling method for precision heat-treated steel belt comprises the following steps: S1: The precision heat-treated steel belt is inserted into the cooling box 1, the support roller 2 supports the steel belt upward, and the water source of the spraying mechanism is turned on. S2: The hydraulic cylinder 3 drives the sliding frame 4 to move downward, the sliding frame 4 drives the compression roller 5 to move downward, and the compression roller 5 flattens the steel belt on the support roller 2. S3: The lifting mechanism drives the transmission box 7 to lift, the transmission box 7 drives the support plate 6 to move, and the support plate 6 drives the connecting frame 8 and the atomizing nozzle 9 to approach the steel belt. S4: The adjusting mechanism drives the connecting frame 8 to rotate, the connecting frame 8 drives the atomizing nozzle 9 to rotate, and the angle of the atomizing nozzle 9 spraying cooling water on the steel belt is adjusted. S5: The spraying mechanism pumps water into the atomizing nozzle 9, the atomizing nozzle 9 atomizes the water and sprays it on the steel belt, and the high-speed moving water mist is used to cool the steel belt. The adjusting mechanism comprises an adjusting motor 10, a worm 11, a worm gear 12, and a transmission assembly. The surface of the adjusting motor 10 is bolted to the inside of the transmission box 7, the output end of the adjusting motor 10 is key-connected to the connecting end of the worm 11, the surface of the worm 11 is meshed with the teeth of the worm gear 12, the shaft of the worm gear 12 is rotatably connected to the inside of the transmission box 7, the worm gear 12 is hingedly connected to the transmission assembly, the power supply of the adjusting motor 10 is turned on, the power supply is an external power supply or an internal power supply, the power cord is a waterproof and high-temperature resistant type, the adjusting motor 10 is fixed by the transmission box 7 to ensure the stability of the operation of the adjusting motor 10, the adjusting motor 10 drives the worm 11 to rotate, the worm 11 drives the worm gear 12 to rotate, and the worm 11 and the worm gear 12 have a self-locking function to prevent the worm gear 12 from driving the worm 11 to rotate. The transmission assembly comprises the articulated rod 13, the toothed disc 14, the rack 15 and the transmission rod 16, the surface of the worm gear 12 is hinged to the right end of the articulated rod 13, the left end of the articulated rod 13 is hinged to the surface of the toothed disc 14, the teeth of the toothed disc 14 are engaged with the top of the rack 15, the right end of the rack 15 is hinged to the left end of the transmission rod 16, the right end of the transmission rod 16 is hinged to the side surface of the connecting frame 8, the worm gear 12 and the articulated rod 13 are in an eccentric structure, the worm gear 12 can drive the articulated rod 13 to move rightward, the articulated rod 13 can drive the toothed disc 14 to rotate, the toothed disc 14 can drive the rack 15 to move leftward, the rack 15 can drive the transmission rod 16 to move leftward, and the transmission rod 16 can drive the connecting frame 8 to rotate; The surface of the rack 15 is slidably connected with the sliding sleeve 17, the sliding sleeve 17 is bolted to the support plate 6, the shaft center of the toothed disc 14 is rotatably connected with the inside of the transmission box 7, the toothed disc 14 penetrates the opening of the support plate 6, and the rack 15 is slidably arranged with the sliding sleeve 17 through the slide rail and is guided, so that the rack 15 drives the transmission rod 16 conveniently; and the toothed disc 14 is rotatably arranged with the transmission box 7 through the bearing, so that the stability of the rotation of the toothed disc 14 is ensured. The water spraying mechanism comprises the water inlet pipe 18, the communication frame 19, the corrugated water pipe 20 and the pressurizing assembly, the water outlet end of the water inlet pipe 18 is communicated with the water inlet end of the communication frame 19, the surface of the communication frame 19 is bolted to the opening of the cooling box 1, the communication frame 19 is communicated with the corrugated water pipe 20, the corrugated water pipe 20 is communicated with the pressurizing assembly, the water inlet pipe 18 is injected with cooling water, after the cooling water enters the water inlet pipe 18, the water inlet pipe 18 injects the cooling water into the communication frame 19, the communication frame 19 can inject the cooling water into the inside of the corrugated water pipe 20, the corrugated water pipe 20 adopts a corrugated pipe structure that can be stretched and contracted, so that it can move along with the support plate 6, and the corrugated water pipe 20 can inject the cooling water into the inside of the pressurizing assembly. The pressurizing assembly comprises the water tank 21, the high-pressure water pump 22 and the explosion-proof hose 23, the water outlet end of the corrugated water pipe 20 is communicated with the water inlet end of the water tank 21, the water tank 21 is bolted to the support plate 6, the water outlet end of the water tank 21 is communicated with the water inlet end of the high-pressure water pump 22, the water outlet end of the high-pressure water pump 22 is communicated with the water inlet end of the explosion-proof hose 23, and the water outlet end of the explosion-proof hose 23 is communicated with the water inlet end of the atomizing nozzle 9, the corrugated water pipe 20 can inject the cooling water into the water tank 21, a one-way valve can be arranged at the connecting position of the corrugated water pipe 20 and the water tank 21, the water tank 21 temporarily stores the cooling water, the power supply of the high-pressure water pump 22 is connected, the high-pressure water pump 22 can extract the cooling water in the water tank 21, the high-pressure water pump 22 pumps the cooling water into the explosion-proof hose 23, and the explosion-proof hose 23 can pump the cooling water into the atomizing nozzle 9. The lifting mechanism comprises a transmission frame 24, a lifting motor 25, a main bevel gear 26, a secondary bevel gear 27, a main sprocket 28 and a lifting assembly, the transmission frame 24 is bolted to the support plate 6, the surface of the lifting motor 25 is bolted to the inside of the transmission frame 24, the output end of the lifting motor 25 is keyed to the shaft center of the main bevel gear 26, the teeth of the main bevel gear 26 are meshed with the teeth of the secondary bevel gear 27, the secondary bevel gear 27 is keyed to the main sprocket 28, the shaft of the main sprocket 28 is rotatably sleeved to the inside of the transmission frame 24, the main sprocket 28 is keyed to the lifting assembly, the power supply of the lifting motor 25 is turned on, the power supply adopts an external power supply or an internal power supply, and the lifting motor 25 is controlled through a controller; the lifting motor 25 can drive the main bevel gear 26 to rotate, the main bevel gear 26 can drive the secondary bevel gear 27 to rotate, the size of the main bevel gear 26 is smaller than that of the secondary bevel gear 27, the secondary bevel gear 27 can be decelerated, the secondary bevel gear 27 can drive the main sprocket 28 to rotate, and the main sprocket 28 can drive the lifting assembly to rotate; The lifting assembly comprises a chain 29, a secondary sprocket 30, a lead screw 31, a sliding cylinder 32 and a sliding rod 33, the teeth of the main sprocket 28 are meshed with the inside of the chain 29, the inside of the chain 29 is meshed with the teeth of the secondary sprocket 30, the shaft center of the secondary sprocket 30 is keyed to one end of the lead screw 31, the lead screw 31 is rotatably sleeved to the transmission frame 24, the screw threads of the lead screw 31 are threadedly connected with the screw holes of the sliding rod 33, the surface of the sliding rod 33 is slidably connected with the inside of the sliding cylinder 32, one end of the sliding cylinder 32 is bolted to the inside of the cooling box 1, the sliding rod 33 is bolted to the transmission box 7, the main sprocket 28 can drive the chain 29 to rotate, the chain 29 can drive the secondary sprocket 30 to rotate, the radius of the main sprocket 28 is one third of the radius of the secondary sprocket 30, the secondary sprocket 30 can be decelerated, the control effect can be increased, the secondary sprocket 30 can drive the lead screw 31 to rotate, the lead screw 31 can drive the sliding rod 33 to move towards the steel belt through screw threads, the sliding rod 33 is slidably arranged on the sliding rail and the sliding cylinder 32, and the sliding rod 33 is guided to move the transmission box 7 towards the steel belt; The left side of the support plate 6 is welded with a guide cover 34, the air outlet of the guide cover 34 is communicated with an exhaust pump 35, the air outlet end of the exhaust pump 35 is communicated with a corrugated air pipe 36, the air outlet end of the corrugated air pipe 36 is communicated with a connecting sleeve 37, the connecting sleeve 37 is bolted to the cooling box 1, the air outlet end of the connecting sleeve 37 is communicated with an exhaust pipe 38, the power supply of the exhaust pump 35 is turned on, the exhaust pump 35 can generate suction in the inside of the guide cover 34, the guide cover 34 can receive the high-speed water mist sprayed to the left by the atomizing nozzle 9, so that the water mist is conveniently extracted by the exhaust pump 35 and pumped into the corrugated air pipe 36, and the corrugated air pipe 36 can guide the water mist into the inside of the connecting sleeve 37, and the connecting sleeve 37 can discharge the water mist through the exhaust pipe 38; Both sides of the cooling box 1 are rotatably connected to the idler rollers, the top of the idler rollers are aligned with the top of the support roller 2, and the two precision heat-treated steel strip rapid cooling devices are a pair. The idler rollers are used to support the steel strip and lift it up. The two precision heat-treated steel strip rapid cooling devices cool the top and bottom of the steel strip respectively.

[0020] Working principle: A precision heat-treated steel strip is passed through an opening on the side of the cooling box 1. Support roller 2 supports the steel strip inside the cooling box 1. The cooling water source is connected to the inlet end of the water inlet pipe 18. The outlet end of the exhaust pipe 38 can be connected to a condensing heat exchanger. Hydraulic cylinder 3 is activated, causing the slide 4 to move downwards. The slide 4 then moves the pressure roller 5 downwards, flattening the steel strip on the support roller 2. The power supply to the regulating motor 10 is activated. The power supply can be external or internal, and the power cord is waterproof and high-temperature resistant. The regulating motor 10 is fixed by the transmission box 7 to ensure stable operation. The regulating motor 10 drives the worm gear 11 to rotate, which in turn drives the worm wheel 12 to rotate. The rod 11 and the worm gear 12 have a self-locking function to prevent the worm gear 12 from driving the worm 11 to rotate. The worm gear 12 and the hinge rod 13 have an eccentric structure. The worm gear 12 can drive the hinge rod 13 to move to the right, the hinge rod 13 can drive the gear plate 14 to rotate, the gear plate 14 can drive the rack 15 to move to the left, the rack 15 can drive the transmission rod 16 to move to the left, the transmission rod 16 can drive the connecting frame 8 to rotate, the connecting frame 8 can drive the atomizing nozzle 9 to rotate, adjusting the angle of the atomizing nozzle 9 spraying cooling onto the steel strip. The power supply of the lifting motor 25 is turned on. The power supply can be external or internal and controlled by a controller. The lifting motor 25 can drive the main bevel gear 26 to rotate, the main bevel gear 26 can drive the secondary bevel gear 27 to rotate, and the main bevel gear 26... The size is smaller than that of the secondary bevel gear 27, which can produce a speed reduction effect on the secondary bevel gear 27. The secondary bevel gear 27 can drive the main sprocket 28 to rotate, the main sprocket 28 can drive the chain 29 to rotate, and the chain 29 can drive the secondary sprocket 30 to rotate. The radius of the main sprocket 28 is one-third of the radius of the secondary sprocket 30, which can produce a speed reduction effect on the secondary sprocket 30 and improve the control effect. The secondary sprocket 30 can drive the lead screw 31 to rotate, and the lead screw 31 can drive the slide rod 33 to move towards the steel belt through the thread. The slide rod 33 is slidably set with the slide cylinder 32 through the slide rail to guide the slide rod 33. The slide rod 33 can drive the transmission box 7 to move towards the steel belt, and the transmission box 7 can drive the support plate 6 to move. The support plate 6 can drive the connecting frame 8 and the atomizing nozzle 9 to move closer to the steel belt and adjust the spacing. Cooling water is injected into the inlet pipe 18. After entering the inlet pipe 18, the cooling water is injected into the connecting frame 19. The connecting frame 19 can then inject the cooling water into the corrugated water pipe 20. The corrugated water pipe 20 adopts a telescopic corrugated pipe structure, which facilitates its movement with the support plate 6. The corrugated water pipe 20 can inject the cooling water into the water tank 21. A one-way valve can be installed at the connection between the two. The water tank 21 temporarily stores the cooling water. When the power supply to the high-pressure water pump 22 is turned on, the high-pressure water pump 22 can draw the cooling water from the water tank 21 and pump it into the explosion-proof hose 23. The explosion-proof hose 23 can then pump the cooling water into the atomizing nozzle 9. The atomizing nozzle 9 can atomize the water and spray it onto the steel strip, using the high-speed moving water mist to cool the steel strip.When the power to the exhaust pump 35 is turned on, the exhaust pump 35 generates suction inside the guide cover 34. The guide cover 34 can receive the high-speed water mist sprayed to the left by the atomizing nozzle 9, thus facilitating the extraction by the exhaust pump 35. The water mist is then pumped into the corrugated duct 36, which guides it into the connecting sleeve 37. The connecting sleeve 37 then discharges the water mist through the exhaust pipe 38.

[0021] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A rapid cooling method for precision heat-treated steel strip, comprising a cooling box (1), characterized in that, The bottom of the inner middle of the cooling box (1) is rotatably connected to a support roller (2), the top of the cooling box (1) is bolted to a hydraulic cylinder (3), the output end of the hydraulic cylinder (3) is bolted to a slide (4), the bottom of the slide (4) is rotatably connected to a pressure roller (5), the top and bottom of the cooling box (1) are bolted to a precision heat-treated steel strip rapid cooling device, the precision heat-treated steel strip rapid cooling device includes a support plate (6), a transmission box (7), a connecting frame (8), an atomizing nozzle (9), an adjustment mechanism, a water spraying mechanism and a lifting mechanism, the support plate (6) is bolted to the transmission box (7), the shaft of the connecting frame (8) is hinged to the opening on the right side of the support plate (6), the hole of the connecting frame (8) is engaged with the surface of the atomizing nozzle (9), the adjustment mechanism is hinged to the connecting frame (8), the water spraying mechanism is connected to the atomizing nozzle (9), and the lifting mechanism is bolted to the transmission box (7); The rapid cooling method for precision heat-treated steel strip includes the following steps: S1: Pass the precision heat-treated steel strip through the cooling box (1), support roller (2) supports the steel strip upward, and connect the water source of the spraying mechanism; S2: The hydraulic cylinder (3) can drive the slide (4) to move downward, the slide (4) can drive the pressure roller (5) to move downward, and the pressure roller (5) can flatten the steel strip on the support roller (2); S3: The lifting mechanism can drive the transmission box (7) to lift, the transmission box (7) can drive the support plate (6) to move, and the support plate (6) can drive the connecting frame (8) and the atomizing nozzle (9) to approach the steel belt; S4: The adjustment mechanism can drive the connecting frame (8) to rotate, and the connecting frame (8) can drive the atomizing nozzle (9) to rotate, adjusting the angle at which the atomizing nozzle (9) sprays cooling onto the steel strip; S5: The spraying mechanism pumps water into the atomizing nozzle (9), which atomizes the water and sprays it onto the steel strip, using the high-speed moving water mist to cool the steel strip.

2. The rapid cooling method for precision heat-treated steel strip according to claim 1, characterized in that, The adjustment mechanism includes an adjustment motor (10), a worm (11), a worm wheel (12), and a transmission assembly. The surface of the adjustment motor (10) is bolted to the inside of the transmission box (7). The output end of the adjustment motor (10) is keyed to the connecting end of the worm (11). The surface of the worm (11) meshes with the teeth of the worm wheel (12). The axis of the worm wheel (12) is rotatably connected to the inside of the transmission box (7). The worm wheel (12) is hinged to the transmission assembly.

3. The rapid cooling method for precision heat-treated steel strip according to claim 2, characterized in that, The transmission assembly includes a hinge rod (13), a gear plate (14), a rack (15), and a transmission rod (16). The surface of the worm gear (12) is hinged to the right end of the hinge rod (13), the left end of the hinge rod (13) is hinged to the surface of the gear plate (14), the teeth of the gear plate (14) mesh with the top of the rack (15), the right end of the rack (15) is hinged to the left end of the transmission rod (16), and the right end of the transmission rod (16) is hinged to the side of the connecting frame (8).

4. The rapid cooling method for precision heat-treated steel strip according to claim 3, characterized in that, The surface of the rack (15) is slidably connected to a sliding sleeve (17), which is bolted to the support plate (6). The shaft of the gear disc (14) is rotatably connected to the inside of the transmission box (7), and the gear disc (14) passes through the opening of the support plate (6).

5. The rapid cooling method for precision heat-treated steel strip according to claim 1, characterized in that, The water spraying mechanism includes an inlet pipe (18), a connecting frame (19), a corrugated water pipe (20), and a pressurizing component. The outlet end of the inlet pipe (18) is connected to the inlet end of the connecting frame (19). The surface of the connecting frame (19) is bolted to the opening of the cooling box (1). The connecting frame (19) is connected to the corrugated water pipe (20), and the corrugated water pipe (20) is connected to the pressurizing component.

6. The rapid cooling method for precision heat-treated steel strip according to claim 5, characterized in that, The pressurization assembly includes a water tank (21), a high-pressure water pump (22), and an explosion-proof hose (23). The outlet of the corrugated water pipe (20) is connected to the inlet of the water tank (21). The water tank (21) is bolted to the support plate (6). The outlet of the water tank (21) is connected to the inlet of the high-pressure water pump (22). The outlet of the high-pressure water pump (22) is connected to the inlet of the explosion-proof hose (23). The outlet of the explosion-proof hose (23) is connected to the inlet of the atomizing nozzle (9).

7. The rapid cooling method for precision heat-treated steel strip according to claim 1, characterized in that, The lifting mechanism includes a transmission frame (24), a lifting motor (25), a main bevel gear (26), a secondary bevel gear (27), a main sprocket (28), and a lifting assembly. The transmission frame (24) is bolted to the support plate (6). The surface of the lifting motor (25) is bolted to the interior of the transmission frame (24). The output end of the lifting motor (25) is keyed to the shaft of the main bevel gear (26). The teeth of the main bevel gear (26) mesh with the teeth of the secondary bevel gear (27). The secondary bevel gear (27) is keyed to the main sprocket (28). The shaft of the main sprocket (28) is rotated and sleeved inside the transmission frame (24). The main sprocket (28) is keyed to the lifting assembly.

8. The rapid cooling method for precision heat-treated steel strip according to claim 2, characterized in that, The lifting assembly includes a chain (29), a secondary sprocket (30), a lead screw (31), a slide cylinder (32), and a slide rod (33). The teeth of the main sprocket (28) mesh with the inner side of the chain (29), the inner side of the chain (29) meshes with the teeth of the secondary sprocket (30), the axis of the secondary sprocket (30) is keyed to one end of the lead screw (31), the lead screw (31) is rotatably sleeved with the transmission frame (24), the thread of the lead screw (31) is threaded to the threaded hole of the slide rod (33), the surface of the slide rod (33) is slidably connected to the inside of the slide cylinder (32), one end of the slide cylinder (32) is bolted to the inner side of the cooling box (1), and the slide rod (33) is bolted to the transmission box (7).

9. The rapid cooling method for precision heat-treated steel strip according to claim 1, characterized in that, A guide cover (34) is welded to the left side of the support plate (6). The air outlet of the guide cover (34) is connected to an exhaust pump (35). The air outlet of the exhaust pump (35) is connected to a corrugated duct (36). The air outlet of the corrugated duct (36) is connected to a connecting sleeve (37). The connecting sleeve (37) is bolted to the cooling box (1). The air outlet of the connecting sleeve (37) is connected to an exhaust pipe (38).

10. The rapid cooling method for precision heat-treated steel strip according to claim 1, characterized in that, Both sides of the cooling box (1) are rotatably connected to rollers, and the top of the rollers is aligned with the top of the support roller (2). The two precision heat-treated steel strip rapid cooling devices are a pair.

Images