A secondary cooling water thermal flow control device for continuous casting

Abstract

The application discloses a secondary cooling water heat flow control equipment for continuous casting, relates to the technical field of metal casting, and is characterized in that a water flow adjusting assembly is installed outside a guide roller, steam pipes are symmetrically installed at two ends of an arc-shaped top plate and an arc-shaped bottom plate, a one-way valve is connected to a top end of a one-way hose, air pump holes are formed in top ends of the steam pipes and heat exchange pipes, a water delivery pipe is installed through a bottom end of the heat exchange pipe, an electric flow valve is connected to an end of a water spraying pipe penetrating through a side plate, and the guide roller is provided with a steam cleaning assembly. High-temperature water vapor of the application is conveyed into the heat exchange pipe through the air filter net after entering the steam pipe, and the water vapor in the condenser pipe is condensed into water droplets. The water between the water delivery pipe and the water baffle is heated, the water temperature of the water sprayed by the water spraying pipe above the water baffle is low, the water temperature of the water sprayed by the water spraying pipe below the water baffle is high, the cooling range of the upper guide roller is larger, the cooling range of the lower guide roller is smaller, the cooling effect is better, the steam overflow is reduced, and the equipment is convenient to check.

Description

Technical Field

[0001] This invention relates to the field of metal casting technology, specifically to a secondary cooling water heat flow control device for continuous casting. Background Technology

[0002] Secondary cooling in continuous casting refers to the forced and uniform cooling of the billet within the length range from the outlet of the crystallizer to the straightening machine during the continuous casting steelmaking process. This range is called the secondary cooling zone. The secondary cooling device is located within a quarter of the arc. Since the billet pulled out from the crystallizer outlet has not yet fully solidified when it enters the upper section of the secondary cooling zone, the billet shell is thin, the thermal resistance is small, and the stress generated by the solidification shrinkage of the billet shell is also small, so strong cooling can be applied. As the thickness of the billet shell increases, the thermal resistance increases, and the cooling intensity should be gradually reduced after the billet enters the lower section of the secondary cooling zone.

[0003] However, during the secondary cooling process in continuous casting, a large amount of water vapor is generated. The water vapor quickly turns into water mist in the air, obscuring the view and making it difficult to observe the surface of the steel. Furthermore, when water is supplied, the upper and lower sections of the arc are cooled by strong cooling and weak cooling respectively. Even with careful control of the water flow, the temperature difference between the water on the outside of the steel and the surface of the steel in the lower section is too large, leading to cracking and a poor forming effect. Summary of the Invention

[0004] This invention provides a secondary cooling water heat flow control device for continuous casting, which can effectively solve the problems mentioned in the background art, such as the generation of a large amount of water vapor during secondary cooling of continuous casting, the rapid transformation of water vapor into water mist in the air, which obstructs vision and makes it difficult to observe the surface of the steel. Furthermore, the use of strong cooling and weak cooling in the upper and lower sections of the arc during water supply, even with strict control of the water flow, still leads to excessive temperature difference between the water temperature on the outer side of the steel in the lower section and the surface temperature of the steel, resulting in cracking and poor forming effect.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a secondary cooling water heat flow control device for continuous casting, comprising a guide roller, wherein a water flow regulating component is installed on the outer side of the guide roller, and the water flow regulating component includes a side plate;

[0006] Side plates are installed on both sides of the guide roller. An arc-shaped top plate is installed at the top of the side plate and an arc-shaped bottom plate is installed at the bottom of the side plate. Steam pipes are symmetrically installed at both ends of the arc-shaped top plate and the arc-shaped bottom plate. A heat exchange pipe is installed on one side of the steam pipe.

[0007] A water spray pipe is installed between adjacent guide rollers. A one-way hose is symmetrically connected to the top of the water spray pipe. A one-way valve is connected to the top of the one-way hose. A heat exchange pipe at the corresponding end is connected to the top of the one-way valve. Negative pressure boxes are fixedly installed through the arc-shaped top plate and arc-shaped bottom plate near both sides of the water spray pipe.

[0008] The negative pressure box is embedded with a filter screen at one end near the guide roller. Negative pressure holes are opened at both ends of the negative pressure box. The negative pressure holes are connected to the steam pipes at the corresponding ends. Air pump holes are opened at the top of the steam pipes and heat exchange pipes. A hot air pump is snapped into the air pump hole. A condenser pipe is installed at the exhaust end of the hot air pump inside the heat exchange pipe. Condensation branch pipes are evenly welded to the outside of the condenser pipe.

[0009] A water supply pipe is installed through the bottom end of the heat exchange tube, and an arc-shaped water distribution pipe is installed in the middle of the water supply pipe. A metal corrugated pipe is installed through the arc-shaped water distribution pipe near the spray pipe. An electric flow limiting valve is connected to the bottom end of the metal corrugated pipe, and the electric flow limiting valve is connected to the end of the spray pipe through the side plate.

[0010] A right-angle plate is movably sleeved on the outside of the heat exchange tube. An electromagnet is embedded in the middle of the top surface of the right-angle plate. A water baffle is sleeved on the outside of the condenser tube near the electromagnet. A bottom sliding plate is welded to the bottom end of the water baffle, and a top sliding plate is welded to the top end of the water baffle.

[0011] According to the above technical solution, a slider is sleeved on the outside of the electric flow limiting valve, a guide hole is opened on the side plate corresponding to the slider, the slider is connected to a water spray pipe, the slider is located on the outside of the side plate and connected to the top of the electric push rod, the bottom end of the electric push rod is connected to a support block, and the support block is welded to the side plate.

[0012] The baffle plate is inlaid with a sealing strip at the corresponding condensate branch pipe, the top edge of the top plate is bonded with a sealing ring, and a rolling rod is movably installed on the top surface of the top plate.

[0013] According to the above technical solution, the longitudinal section of the water spray pipe is a rectangular frame, and the water spray pipe is slidably installed between adjacent negative pressure boxes.

[0014] According to the above technical solution, the input terminals of the hot air pump, the electric flow limiting valve, and the electromagnet are electrically connected to the output terminal of the external power supply, and the air inlet of the hot air pump is located inside the steam pipe.

[0015] According to the above technical solution, the bottom slide plate and the top slide plate are smooth curved surfaces that fit the bottom and top surfaces inside the heat exchange tube, respectively, and the two ends of the baffle plate are respectively attached to the inner walls on both sides of the heat exchange tube.

[0016] According to the above technical solution, the vertical side of the right-angle plate is movably engaged between the arc-shaped water distribution pipe and the heat exchange pipe. The opposing surfaces of the arc-shaped water distribution pipe and the heat exchange pipe are smooth planes, and the bottom surface of the horizontal side of the right-angle plate is a smooth curved surface that fits the top surface of the heat exchange pipe.

[0017] According to the above technical solution, the guide roller is equipped with a steam cleaning component, which includes an arc-shaped baffle.

[0018] An arc-shaped baffle is installed on one side of the guide roller. Outer scrapers are welded to both ends of the arc-shaped baffle near the guide roller. Partitions are uniformly welded between the arc-shaped baffle and the outer scrapers. Inner scrapers are welded to the side of the partitions near the guide roller. Guide holes are opened at the ends of adjacent partitions that are far apart from each other. Water vapor pipes are fixedly connected to both ends of the outer scrapers.

[0019] The side plate has a pull hole corresponding to the water vapor pipe. The water vapor pipe is connected to one end of the half pipe. Two half pipes located on the same straight line are respectively connected to the two ends of the spring. A flexible connecting pipe is sleeved on the outside of the spring. The ends of several half pipes located in the middle are connected by connecting pipes. The bottom end of the half pipe located at the bottom is connected to the residual water pipe. The residual water pipe is connected to the water tank. A heat insulation film is glued to the outside of the water tank. A water filter screen is installed in the middle of the inside of the water tank. Ultrasonic atomizing plates are symmetrically installed at the bottom of the inside of the water tank.

[0020] A cooling air pump is symmetrically installed on one side of the top of the water tank. The air outlet of the cooling air pump is connected to an air supply pipe, which is connected to one end of the topmost half-pipe. Condensation pipes are symmetrically installed on the top of the water tank and are connected to condensate pipes.

[0021] According to the above technical solution, the ultrasonic atomizing plate and the cold air pump input terminal are electrically connected to the external power supply output terminal, and the ultrasonic atomizing plate and the cold air pump are located on both sides of the water filter screen.

[0022] According to the above technical solution, one end of the outer scraper is closely attached to the guide roller, and the side of the inner scraper near the guide roller is a smooth curved surface that fits the guide roller.

[0023] According to the above technical solution, the arc-shaped baffle contacts the side plate at both ends, and the guide hole is an elongated hole with a width equal to the outer diameter of the water vapor pipe and chamfered at both ends.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] 1. Equipped with a water flow regulating component, the incoming red-hot steel bar is cooled. The water quickly evaporates into steam. The hot air pump is activated, and air is drawn from the negative pressure box through the negative pressure hole. The high-temperature steam passes through the air filter and enters the steam pipe, and is then transported to the heat exchange pipe by the hot air pump. At this time, the water between the water supply pipe and the baffle plate exchanges heat through the condensation branch pipe. The water vapor in the condensation pipe condenses into water droplets, and the water in the heat exchange pipe between the water supply pipe and the baffle plate is heated. The water sprayed from the water spray pipe above the baffle plate has a lower temperature, while the water sprayed from the water spray pipe below the baffle plate has a higher temperature. This ensures that the upper guide roller cools down more and the lower guide roller cools down less, avoiding the problem of cracking on the outside of the red-hot steel due to excessive temperature difference in the lower guide roller. The water volume and water temperature are controlled by an electric flow limiting valve, resulting in better cooling effect and reduced steam overflow. It is also convenient to check the condition of the outside of the continuously cast iron. The steam is condensed and recovered for later use, saving water resources.

[0026] When the electromagnet is activated, it attracts the baffle plate inside the heat exchange tube. The bottom and top sliding plates slide along the inside of the heat exchange tube, and the rolling rod rolls along the top surface of the top sliding plate to adjust the position of the baffle plate. This changes the ratio of water entering the heat exchange tube and the arc-shaped water distribution pipe, and thus the ratio of high and low temperature water sprayed onto the outside of the red-hot steel. This allows for adjustments based on different needs to achieve better cooling and improve the forming effect of the steel.

[0027] 2. Equipped with a steam cleaning component, the condensed water flows along the condenser pipe and enters the condensate pipe. The water in the condensate pipe is filtered through the water filter screen and enters the bottom of the water tank. Then, the ultrasonic atomizing plate is activated, followed by the cold air pump. The water mist is guided by the cold air pump and enters the space formed by the arc-shaped baffle, the outer scraper, and the side plate through the air supply pipe. It is sprayed onto the outside of the guide roller and flows along the partition to the guide hole, then to the lower partition, flowing in a curved path and contacting the outside of the guide roller to wet and cool it down. This also facilitates the outer and inner scrapers to remove debris attached to the outside of the guide roller. The cooling process is simultaneous with the cleaning. The heated water vapor continues to flow along the connecting pipe into the lower half-pipe to clean and cool the lower guide roller. This process continues until the bottom guide roller is cleaned. The remaining water vapor then enters the water tank through the residual water pipe. Some water vapor overflows from the top of the water tank, while some water vapor continues to mix with the condensate flowing down the condensate pipe for the next cleaning and cooling operation.

[0028] In summary, the water flow regulating component collects water vapor, reducing water vapor for easier observation while conserving water resources. It also regulates water temperature, changing the temperature difference between the water and the outside of the cast iron, thus improving the molding effect. The condensed water is then reused in the steam cleaning component, saving water resources while cleaning and cooling the guide rollers, further improving the molding effect of the cast iron. Attached Figure Description

[0029] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0030] In the attached diagram:

[0031] Figure 1 This is a schematic diagram of the structure of the present invention;

[0032] Figure 2 This is a schematic diagram of the water flow regulating component of the present invention;

[0033] Figure 3 This is a schematic diagram of the installation structure of the arc-shaped water distribution pipe of the present invention;

[0034] Figure 4 This is a schematic diagram of the installation structure of the unidirectional flexible hose of the present invention;

[0035] Figure 5 This is a schematic diagram of the installation structure of the water baffle of the present invention;

[0036] Figure 6 This is a schematic diagram of the structure of the steam cleaning component of the present invention;

[0037] Figure 7 This is a schematic diagram of the installation structure of the half-pipe of the present invention;

[0038] Figure 8 This is a schematic diagram of the installation structure of the water filter screen of the present invention;

[0039] Labels in the diagram: 1. Guide roller;

[0040] 2. Water flow regulating assembly; 201. Side plate; 202. Arc-shaped top plate; 203. Arc-shaped bottom plate; 204. Steam pipe; 205. Heat exchange pipe; 206. Water spray pipe; 207. One-way flexible hose; 208. One-way valve; 209. Negative pressure box; 210. Air filter screen; 211. Negative pressure hole; 212. Air pump hole; 213. Heat pump; 214. Condenser pipe; 215. Condenser branch pipe; 216. Water supply pipe; 217. Arc-shaped water distribution pipe; 218. Metal corrugated pipe; 219. Electric flow limiting valve; 220. Right-angle plate; 221. Electromagnet; 222. Water baffle; 223. Sealing strip; 224. Bottom sliding plate; 225. Top sliding plate; 226. Sealing ring; 227. Rolling rod; 228. Sliding block; 229. Guide hole; 230. Electric actuator; 231. Support block;

[0041] 3. Steam cleaning components; 301. Arc-shaped baffle; 302. Outer scraper; 303. Partition; 304. Inner scraper; 305. Guide hole; 306. Steam pipe; 307. Pull hole; 308. Half pipe; 309. Spring; 310. Flexible connecting pipe; 311. Connecting pipe; 312. Excess water pipe; 313. Water tank; 314. Heat insulation membrane; 315. Water filter screen; 316. Ultrasonic atomizing plate; 317. Air pump; 318. Air supply pipe; 319. Condensate pipe. Detailed Implementation

[0042] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0043] Example: Figure 1-8 As shown, the present invention provides a technical solution for a secondary cooling water heat flow control device for continuous casting, including a guide roller 1. A water flow regulating component 2 is installed on the outside of the guide roller 1. The water flow regulating component 2 includes a side plate 201, an arc-shaped top plate 202, an arc-shaped bottom plate 203, a steam pipe 204, a heat exchange pipe 205, a water spray pipe 206, a one-way hose 207, a one-way valve 208, a negative pressure box 209, a filter screen 210, a negative pressure hole 211, and an air pump. 212, hot air pump 213, condenser pipe 214, condenser branch pipe 215, water supply pipe 216, arc-shaped water distribution pipe 217, metal corrugated pipe 218, electric flow limiting valve 219, right angle plate 220, electromagnet 221, water baffle 222, sealing strip 223, bottom slide plate 224, top slide plate 225, sealing ring 226, rolling rod 227, slider 228, guide hole 229, electric push rod 230 and support block 231;

[0044] Side plates 201 are installed on both sides of the guide roller 1. An arc-shaped top plate 202 is installed at the top of the side plate 201, and an arc-shaped bottom plate 203 is installed at the bottom of the side plate 201. Steam pipes 204 are symmetrically installed at both ends of the arc-shaped top plate 202 and the arc-shaped bottom plate 203. A heat exchange pipe 205 is installed on one side of the steam pipe 204. A water spray pipe 206 is installed between adjacent guide rollers 1. A one-way hose 207 is symmetrically connected to the top of the water spray pipe 206. A one-way valve 208 is connected to the top of the one-way hose 207. The top of the one-way valve 208 is connected to the heat exchange pipe 205 at the corresponding end. Negative pressure boxes 209 are fixedly installed through the arc-shaped top plate 202 and the arc-shaped bottom plate 203 near both sides of the water spray pipe 206. The longitudinal section of the water spray pipe 206 is a rectangular frame. The water spray pipe 206 is slidably installed between adjacent negative pressure boxes 209 to facilitate the sliding of the water spray pipe 206 between the negative pressure boxes 209.

[0045] A filter screen 210 is embedded in the negative pressure box 209 near the guide roller 1. Negative pressure holes 211 are opened at both ends of the negative pressure box 209. The negative pressure holes 211 are connected to the corresponding steam pipe 204. The top of the steam pipe 204 and the heat exchange pipe 205 are both opened with air pump holes 212. A hot air pump 213 is snapped into the air pump hole 212. A condenser pipe 214 is installed at the exhaust end of the hot air pump 213 inside the heat exchange pipe 205. A condenser branch pipe 215 is evenly welded to the outside of the condenser pipe 214. A water supply pipe 216 is installed through the bottom of the heat exchange pipe 205. An arc-shaped water distribution pipe 217 is installed in the middle of the water supply pipe 216. A metal corrugated pipe 218 is installed through the arc-shaped water distribution pipe 217 near the spray pipe 206. An electric flow limiting valve 219 is connected to the bottom of the metal corrugated pipe 218. The electric flow limiting valve 219 is connected to the end of the spray pipe 206 through the side plate 201.

[0046] A right-angle plate 220 is movably sleeved on the outside of the heat exchange tube 205. The vertical side of the right-angle plate 220 is movably engaged between the arc-shaped water distribution pipe 217 and the heat exchange tube 205. The surfaces of the arc-shaped water distribution pipe 217 and the heat exchange tube 205 are smooth planes. The bottom surface of the horizontal side of the right-angle plate 220 is a smooth curved surface that fits the top surface of the heat exchange tube 205, facilitating the sliding of the right-angle plate 220 along the heat exchange tube 205. An electromagnet 221 is embedded in the center of the top surface of the right-angle plate 220. The input ends of the heat pump 213, the electric flow limiting valve 219, and the electromagnet 221 are electrically connected to the output end of an external power supply, respectively. The air inlet of the heat pump 213 is located inside the steam pipe 204, ensuring that the heat pump 213 and the electric flow limiting valve 219 are properly connected. 19 and electromagnet 221 are working normally. A baffle plate 222 is sleeved on the outside of condenser tube 214 near electromagnet 221. A sealing strip 223 is embedded in the baffle plate 222 at the location corresponding to condenser branch tube 215. A bottom slide plate 224 is welded to the bottom end of the baffle plate 222, and a top slide plate 225 is welded to the top end of the baffle plate 222. The bottom slide plate 224 and the top slide plate 225 are respectively smooth curved surfaces that fit the bottom and top surfaces of the heat exchange tube 205. The two ends of the baffle plate 222 are respectively attached to the inner walls of both sides of the heat exchange tube 205 to facilitate the sliding of the baffle plate 222 inside the heat exchange tube 205. A sealing ring 226 is glued to the edge of the top surface of the top slide plate 225, and a rolling rod 227 is movably installed on the top surface of the top slide plate 225.

[0047] A slider 228 is sleeved on the outside of the electric flow limiting valve 219. A guide hole 229 is opened on the side plate 201 corresponding to the slider 228. The slider 228 is connected to the water spray pipe 206. The slider 228 is located on the outside of the side plate 201 and connected to the top of the electric push rod 230. The bottom end of the electric push rod 230 is connected to the support block 231. The support block 231 is welded to the side plate 201.

[0048] The guide roller 1 is equipped with a steam cleaning assembly 3, which includes an arc-shaped baffle 301, an outer scraper 302, a partition 303, an inner scraper 304, a guide hole 305, a steam pipe 306, a pulling hole 307, a half pipe 308, a spring 309, a flexible connecting pipe 310, a connecting pipe 311, a residual water pipe 312, a water tank 313, a heat insulation membrane 314, a water filter screen 315, an ultrasonic atomizing plate 316, a cold air pump 317, an air delivery pipe 318, and a condensate pipe 319.

[0049] An arc-shaped baffle 301 is installed on one side of the guide roller 1. Outer scrapers 302 are welded to both ends of the arc-shaped baffle 301 near the guide roller 1. Partitions 303 are evenly welded between the arc-shaped baffle 301 and the outer scrapers 302. An inner scraper 304 is welded to the side of the partition 303 near the guide roller 1. One end of the outer scraper 302 is tightly attached to the guide roller 1. The side of the inner scraper 304 near the guide roller 1 is a smooth curved surface that fits the guide roller 1, which facilitates cleaning the guide roller 1. Guide holes 305 are opened at the ends of adjacent partitions 303 that are far apart from each other. Water vapor pipes 306 are fixedly connected to both ends of the outer scraper 302. The two ends of the arc-shaped baffle 301 contact the side plate 201 respectively. The guide hole 305 is a long strip hole with a width equal to the outer diameter of the water vapor pipe 306 and chamfered at both ends, which facilitates the sliding of the water vapor pipe 306 in the guide hole 305.

[0050] A pull hole 307 is provided on the side plate 201 corresponding to the water vapor pipe 306. The water vapor pipe 306 is connected to one end of the half-pipe 308. Two half-pipes 308 located on the same straight line are respectively connected to the two ends of the spring 309. A flexible connecting pipe 310 is sleeved on the outside of the spring 309. The ends of several half-pipes 308 located in the middle are connected by connecting pipes 311. The bottom end of the bottom half-pipe 308 is connected to the drain pipe 312. The drain pipe 312 is connected to the water tank 313. A heat insulation film 314 is adhered to the outside of the water tank 313. A water filter screen 315 is installed in the middle of the inside of the water tank 313. The bottom of the inside of the water tank 313 is connected to the drain pipe 312. The water tank 313 is equipped with an ultrasonic atomizing plate 316. A cold air pump 317 is symmetrically installed on the top side of one side of the water tank 313. The input terminals of the ultrasonic atomizing plate 316 and the cold air pump 317 are electrically connected to the output terminals of an external power supply. The ultrasonic atomizing plate 316 and the cold air pump 317 are located on both sides of the water filter screen 315 to ensure the normal operation of the ultrasonic atomizing plate 316 and the cold air pump 317. The air outlet of the cold air pump 317 is connected to an air supply pipe 318, which is connected to one end of the top half-pipe 308. A condensate pipe 319 is symmetrically installed on the top of the water tank 313, and the condensate pipe 319 is connected to the condenser pipe 214.

[0051] The working principle and usage process of this invention: The red-hot steel strip flowing out from the bottom of the crystallizer enters between the guide rollers 1. One end of the water supply pipe 216 is connected to the cold water pipe, and cold water is sent to the heat exchange pipe 205. Due to the obstruction of the baffle plate 222, part of the water passes through the one-way valve 208 and then enters the spray pipe 206 along the one-way hose 207. The other part of the water passes through the arc-shaped water distribution pipe 217 and enters the spray pipe 206 through the electric flow limiting valve 219 and is sprayed to the outside of the red-hot steel strip to cool the red-hot steel strip. The water quickly evaporates into water vapor.

[0052] Then, the heat pump 213 is started, drawing air from the negative pressure box 209 through the negative pressure hole 211. High-temperature water vapor enters the steam pipe 204 through the air filter 210 and is then transported to the heat exchange tube 205 by the heat pump 213. At this time, the water between the water supply pipe 216 and the baffle plate 222 exchanges heat through the condenser branch pipe 215. The water vapor in the condenser tube 214 condenses into water droplets, and the water in the heat exchange tube 205 between the water supply pipe 216 and the baffle plate 222 is heated. The water sprayed from the water pipe 206 above the baffle plate 222 is at a lower temperature, while the water sprayed from the water pipe 206 below the baffle plate 222 is at a higher temperature. This ensures that the upper guide roller 1 cools down more and the lower guide roller 1 cools down less, thus avoiding the problem of cracking on the outside of the red-hot steel due to excessive temperature difference. This results in better cooling effect and reduces steam overflow, making it easier to check the condition of the outside of the continuously cast iron. The steam can be condensed and recovered for continued use, saving water resources.

[0053] Next, the electromagnet 221 is activated. The electromagnet 221 attracts the baffle plate 222 inside the heat exchange tube 205. The bottom slide plate 224 and the top slide plate 225 slide along the inside of the heat exchange tube 205. The rolling rod 227 rolls along the top surface of the top slide plate 225 to adjust the position of the baffle plate 222, thereby changing the ratio of water entering the heat exchange tube 205 and the arc-shaped water distribution pipe 217, and changing the ratio of high and low temperature water sprayed to the outside of the red-hot steel. This allows for adjustment according to different needs to achieve a better cooling effect.

[0054] During the water spraying process, the electric actuator 230 is activated, which pulls the slider 228 to slide along the guide hole 229, thereby adjusting the distance between the water spray pipe 206 and the outside of the steel, adjusting the area of ​​water spraying, and further improving the effect of steel cooling and forming.

[0055] During normal operation, the spring 309 inside the flexible connecting pipe 310 automatically pulls the half-pipes 308 closer together, thereby bringing the outer scraper 302 and the inner scraper 304 closer to the guide roller 1. The condensed water flows along the condenser pipe 214 and enters the condensate pipe 319. The water in the condensate pipe 319 enters the bottom of the water tank 313 after being filtered by the filter screen 315. The heat insulation film 314 reduces the impact of high external temperatures on the water tank 313, making the water temperature in the water tank 313 lower. Then, the ultrasonic atomizing plate 316 is activated, followed by the cold air pump 317. The water mist is guided by the cold air pump 317 and enters the space formed by the arc-shaped baffle 301, the outer scraper 302, and the side plate 201 through the air supply pipe 318. The water vapor is sprayed onto the outside of the guide roller 1 and flows along the partition 303 to the guide hole 305, then to the lower partition 303. It flows in a curved path and contacts the outside of the guide roller 1, wetting the guide roller 1 to cool it down. This also facilitates the outer scraper 302 and inner scraper 304 to scrape off the debris attached to the outside of the guide roller 1. The water vapor is cleaned while cooling down. The heated water vapor continues to enter the lower half pipe 308 along the connecting pipe 311 to clean and cool down the lower guide roller 1. After cleaning the bottom guide roller 1, the water vapor enters the water tank 313 along the residual water pipe 312. Some water vapor overflows from the top of the water tank 313, while some water vapor continues to mix with the condensate flowing down the condensate pipe 319 for the next cleaning and cooling operation.

[0056] In the overall operation, the water flow regulating component 2 collects water vapor, reducing water vapor for easier observation while saving water resources, and regulates the water temperature to change the temperature difference between the water temperature and the outside of the cast iron, thereby improving the molding effect. The condensed water is then used for the steam cleaning component 3, saving water resources while cleaning and cooling the guide roller 1, further improving the molding effect of the cast iron.

[0057] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A secondary cooling water heat flow control device for continuous casting, comprising guide rollers (1), characterized in that: A water flow regulating component (2) is installed on the outside of the guide roller (1), and the water flow regulating component (2) includes a side plate (201); Side plates (201) are installed on both sides of the guide roller (1). An arc-shaped top plate (202) is installed at the top of the side plate (201), and an arc-shaped bottom plate (203) is installed at the bottom of the side plate (201). Steam pipes (204) are symmetrically installed at both ends of the arc-shaped top plate (202) and the arc-shaped bottom plate (203). A heat exchange pipe (205) is installed on one side of the steam pipe (204). A water spray pipe (206) is installed between adjacent guide rollers (1). A one-way hose (207) is symmetrically connected to the top of the water spray pipe (206). A one-way valve (208) is connected to the top of the one-way hose (207). A heat exchange pipe (205) is connected to the top of the one-way valve (208) at one end. Negative pressure boxes (209) are fixedly installed through both sides of the arc-shaped top plate (202) and arc-shaped bottom plate (203) near the water spray pipe (206). The negative pressure box (209) is fitted with a filter screen (210) at one end near the guide roller (1). Negative pressure holes (211) are opened at both ends of the negative pressure box (209). The negative pressure holes (211) are connected to the steam pipe (204) at the corresponding end. The top of the steam pipe (204) and the heat exchange pipe (205) are both provided with air pump holes (212). A hot air pump (213) is snapped into the air pump hole (212). A condenser pipe (214) is installed at the exhaust end of the hot air pump (213) inside the heat exchange pipe (205). A condenser branch pipe (215) is evenly welded to the outside of the condenser pipe (214). A water supply pipe (216) is installed through the bottom end of the heat exchange tube (205). An arc-shaped water distribution pipe (217) is installed in the middle of the water supply pipe (216). A metal corrugated pipe (218) is installed through the arc-shaped water distribution pipe (217) near the spray pipe (206). An electric flow limiting valve (219) is connected to the bottom end of the metal corrugated pipe (218). The electric flow limiting valve (219) passes through the side plate (201) and is connected to the end of the spray pipe (206). A right-angle plate (220) is movably sleeved on the outside of the heat exchange tube (205). An electromagnet (221) is embedded in the middle of the top surface of the right-angle plate (220). A baffle plate (222) is sleeved on the outside of the condenser tube (214) near the electromagnet (221). A bottom plate (224) is welded to the bottom end of the baffle plate (222), and a top plate (225) is welded to the top end of the baffle plate (222).

2. The secondary cooling water heat flow control device for continuous casting according to claim 1, characterized in that, The electric flow limiting valve (219) is sleeved with a slider (228) on the outside. The side plate (201) is provided with a guide hole (229) corresponding to the slider (228). The slider (228) is connected to a water spray pipe (206). The slider (228) is located on the outside of the side plate (201) and connected to the top of the electric push rod (230). The bottom end of the electric push rod (230) is connected to a support block (231). The support block (231) is welded to the side plate (201). The baffle plate (222) is inlaid with a sealing strip (223) at the location corresponding to the condenser branch pipe (215), the top edge of the top plate (225) is bonded with a sealing ring (226), and a rolling rod (227) is movably installed on the top surface of the top plate (225).

3. The secondary cooling water heat flow control device for continuous casting according to claim 1, characterized in that, The longitudinal section of the water spray pipe (206) is a rectangular frame, and the water spray pipe (206) is slidably installed between adjacent negative pressure boxes (209).

4. The secondary cooling water heat flow control device for continuous casting according to claim 2, characterized in that, The input terminals of the heat pump (213), the electric flow limiting valve (219) and the electromagnet (221) are electrically connected to the output terminal of the external power supply, and the air inlet of the heat pump (213) is located inside the steam pipe (204).

5. A secondary cooling water heat flow control device for continuous casting according to claim 2, characterized in that, The bottom slide plate (224) and the top slide plate (225) are smooth curved surfaces that fit the bottom and top surfaces of the heat exchange tube (205), respectively, and the two ends of the baffle plate (222) are respectively attached to the inner walls of both sides of the heat exchange tube (205).

6. The secondary cooling water heat flow control device for continuous casting according to claim 2, characterized in that, The vertical side of the right-angle plate (220) is movably connected between the arc-shaped water distribution pipe (217) and the heat exchange pipe (205). The surfaces of the arc-shaped water distribution pipe (217) and the heat exchange pipe (205) are smooth planes, and the bottom surface of the horizontal side of the right-angle plate (220) is a smooth curved surface that fits the top surface of the heat exchange pipe (205).

7. A secondary cooling water heat flow control device for continuous casting according to claim 1, characterized in that, The guide roller (1) is equipped with a steam cleaning assembly (3), which includes an arc-shaped baffle (301); An arc-shaped baffle (301) is installed on one side of the guide roller (1). An outer scraper (302) is welded to both ends of the arc-shaped baffle (301) near the guide roller (1). A partition (303) is uniformly welded between the arc-shaped baffle (301) and the outer scraper (302). An inner scraper (304) is welded to the side of the partition (303) near the guide roller (1). A guide hole (305) is opened at the opposite end of each adjacent partition (303). Water vapor pipes (306) are fixedly connected to both ends of the outer scraper (302). The side plate (201) has a pull hole (307) corresponding to the water vapor pipe (306). The water vapor pipe (306) is connected to one end of the half pipe (308). Two half pipes (308) located on the same straight line are respectively connected to the two ends of the spring (309). A flexible connecting pipe (310) is sleeved on the outside of the spring (309). The ends of several half pipes (308) located in the middle are connected by connecting pipes (311). The bottom end of the half pipe (308) located at the bottom end is connected to the residual water pipe (312). The residual water pipe (312) is connected to the water tank (313). A heat insulation film (314) is adhered to the outside of the water tank (313). A water filter screen (315) is installed in the middle of the inside of the water tank (313). An ultrasonic atomizing plate (316) is symmetrically installed at the bottom of the inside of the water tank (313). A cooling pump (317) is symmetrically installed on one side of the top of the water tank (313). The air outlet of the cooling pump (317) is connected to an air supply pipe (318). The air supply pipe (318) is connected to one end of the topmost half pipe (308). A condensate pipe (319) is symmetrically installed on the top of the water tank (313). The condensate pipe (319) is connected to a condenser pipe (214).

8. A secondary cooling water heat flow control device for continuous casting according to claim 7, characterized in that, The input terminals of the ultrasonic atomizing plate (316) and the cold air pump (317) are electrically connected to the output terminals of the external power supply, and the ultrasonic atomizing plate (316) and the cold air pump (317) are located on both sides of the water filter screen (315).

9. A secondary cooling water heat flow control device for continuous casting according to claim 7, characterized in that, The outer scraper (302) is tightly attached to the guide roller (1) at one end, and the inner scraper (304) has a smooth curved surface that fits the guide roller (1) on the side close to the guide roller (1).

10. A secondary cooling water heat flow control device for continuous casting according to claim 7, characterized in that, The arc-shaped baffle (301) contacts the side plate (201) at both ends, and the guide hole (305) is an elongated hole with a width equal to the outer diameter of the water vapor pipe (306) and chamfered at both ends.

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