Local strengthening heating device before hot-rolled steel billet is discharged from furnace

Abstract

The utility model belongs to the technical field of hot-rolled steel billet processing equipment, particularly relates to a local strengthening heating device before hot-rolled steel billet tapping, and aims to solve the problems of low heating precision, non-uniform mixing of fuel gas and oxygen, incomplete oxygen filtration and poor heat dissipation of a central control system in the conventional local strengthening heating device before hot-rolled steel billet tapping. According to the scheme, the heating equipment comprises a heating equipment body; the central control system is mounted on the right side of the heating equipment body; according to the utility model, not only are the defects of low heating precision, non-uniform mixing of gas and oxygen, incomplete industrial dust filtration and poor high-temperature stability of a central control system in the prior art effectively overcome, but also the industrial dust is fully filtered through the innovative combination of four-stage efficient filtering and self-cleaning, precise matching and mixing of gas and oxygen, numerical control adjustable local heating and single-motor cooperative transmission. The utility model provides a hot-rolled steel billet local strengthening heating device which is suitable for harsh requirements in the industrial field.

Description

Technical Field

[0001] This application relates to the technical field of hot-rolled steel billet processing equipment, and in particular to a localized enhanced heating device for hot-rolled steel billets before they exit the furnace. Background Technology

[0002] Hot-rolled steel billets are the basic raw materials for core components of industrial machinery (such as buckets for construction machinery, spindles for machine tools, and connecting parts for rail transit). Their mechanical properties directly determine the operational reliability, load-bearing capacity, and service life of industrial machinery. Under harsh operating conditions such as heavy loads, high speeds, and high-frequency impacts, critical parts of core components (such as stress nodes, transmission contact surfaces, and wear-resistant working surfaces) of industrial machinery must possess extremely high mechanical properties. Therefore, strict requirements are placed on the quality of localized strengthening of steel billets.

[0003] Chinese utility model patent CN2628171Y discloses a localized heating device for hot-rolled steel billets. This device establishes a locally enhanced heating zone or chamber at the end of the soaking zone of the heating furnace. At least one pair of burners are placed on both sides of the side walls or the furnace roof of the locally enhanced heating zone or chamber to enhance heating of a localized area of ​​200-300mm along both ends of the steel billet that has completed soaking and is about to exit the furnace. This results in the localized area temperature being 80-120℃ higher than the furnace temperature of the soaking zone, with a heating time of 20-30 seconds. The advantages of this utility model are that it reduces the surface temperature difference of the steel billet along its length at the leading edge of the rolling mill, improves the uniformity of rolling temperature, improves product rolling quality, reduces scrap rate, increases mill productivity, and lowers production costs.

[0004] Patent CN1228459C discloses a method and apparatus for localized intensified heating of hot-rolled steel billets before they exit the furnace. The method includes the following steps: 1. Calculating the temperature distribution of the steel billet upon exiting the furnace; 2. Calculating the time for localized intensified heating of the steel billet within the furnace; 3. Based on the calculated data, establishing a localized intensified heating zone or chamber at the end of the soaking section of the furnace to intensify heating of a localized area of ​​200-300mm along both ends of the steel billet, ensuring the local temperature is 80-120℃ higher than the furnace temperature of the soaking section, for a heating time of 20-30 seconds. The apparatus is characterized by having at least one pair of burners on both sides of the localized intensified heating zone or chamber, or on both sides of the furnace top, to intensify heating of the ends of the steel billet that has completed soaking and is about to exit the furnace. The advantages of this patent are: reducing the surface temperature difference of the steel billet along its length at the edge of the mill, improving rolling temperature uniformity, improving product rolling quality, reducing scrap rate, increasing mill productivity, and lowering production costs.

[0005] Existing hot-rolled billet local heating devices have many shortcomings when adapted to the production of billets for agricultural machinery:

[0006] 1. Uneven mixing of fuel gas and oxygen, resulting in low combustion efficiency: The uniformity of the mixing of fuel gas and oxygen directly affects heating efficiency and temperature stability. Existing equipment lacks an efficient mixing structure, and uneven mixing easily leads to incomplete combustion and low energy utilization. This not only increases production energy consumption but also generates a large amount of harmful waste gas, which does not meet the green and low-carbon development requirements of the agricultural machinery production field.

[0007] 2. Incomplete oxygen filtration and severe equipment wear: Agricultural machinery production areas are often located near fields, where air dust content is high. During oxygen preparation, soil dust, straw fragments, and other impurities easily mix in. If these are not effectively filtered before being introduced into the heating mechanism, it will cause burner blockage and valve wear, affecting the continuous operation of the production line.

[0008] 3. Poor heat dissipation and insufficient stability of the central control system: Most steel billet production lines for small and medium-sized agricultural machinery are set up in the open or semi-open environment. In the high temperature environment in summer, the central control system is prone to problems such as crashes and parameter drift due to poor heat dissipation, resulting in loss of control of the heating process and poor consistency of steel billet product quality.

[0009] This invention not only effectively overcomes the shortcomings of existing technologies, such as low heating accuracy, uneven gas-oxygen mixing, incomplete oxygen filtration, poor heat dissipation of the central control system, and poor transmission coordination, but also provides a localized enhanced heating device suitable for hot-rolled steel billets for machinery through an innovative combination of three-stage filtration self-cleaning, efficient mixing ratio, precise angle adjustment heating, and single-motor coordinated transmission. It is applicable to the production and processing of steel billets for industrial machinery parts and has high practical value and promising prospects for promotion. Utility Model Content

[0010] In order to improve the problems of low heating accuracy, uneven mixing of gas and oxygen, incomplete oxygen filtration and poor heat dissipation of the central control system in the existing localized strengthening heating device before hot-rolled billet exits the furnace, this application provides a localized strengthening heating device before hot-rolled billet exits the furnace.

[0011] The technical solution of the localized enhanced heating device for hot-rolled steel billets before they exit the furnace provided in this application is as follows:

[0012] A localized intensification heating device for hot-rolled steel billets before they exit the furnace includes: a heating equipment body; and a central control system installed on the right side of the heating equipment body.

[0013] A heating mechanism, mounted on the main body of a heating device, is used to heat a steel billet. The heating mechanism includes a burner installed on the inner wall of the main body of the heating device. A one-way valve is installed at the inlet of the burner, and a mixing chamber is installed at the inlet of the one-way valve. A mixing blade is rotatably mounted inside the mixing chamber. A worm gear is fixedly connected to the top of the mixing blade, and a worm is meshed with the front side of the worm gear. The worm is rotatably mounted on the mounting plate of the mixing blade, and a first rotating shaft is fixedly connected to both ends of the worm.

[0014] An oxygen replenishment device is located on the left side of the heating mechanism and is used to input oxygen into the heating mechanism. The oxygen replenishment device includes an oxygen generator, which is installed inside the heating equipment body. A first output pump is installed at the output port of the oxygen generator. A multi-hole nozzle is installed on the inner wall of the mixing chamber. The output port of the first output pump is connected to the input port hose of the multi-hole nozzle.

[0015] A gas replenishment device is located on the right side of the heating mechanism and is used to replenish gas into the heating mechanism. The gas replenishment device includes a gas replenishment module, which is installed inside the heating equipment body. A second output pump is installed at the output port of the gas replenishment module. The heating equipment body is provided with a heating chamber for processing. A nozzle is installed on the right side of the heating chamber. The output port of the second output pump and the input port of the nozzle are connected by a hose.

[0016] A filter device is located on the left side of the oxygen supply device and is used for filtration.

[0017] The heat dissipation device is located at the rear of the central control system and is used to dissipate heat from the central control system.

[0018] Preferably, the filtration device includes a fixed frame and a second synchronous toothed belt. The inlet of the oxygen generator is fixedly connected to the fixed frame. A filter module is fixedly connected to the fixed frame. A scraper is rotatably connected to the center point of the fixed frame. The scraper abuts against and overlaps with the filter module. A dust collection module is installed at the bottom of the fixed frame. A second synchronous toothed belt pulley is fixedly connected to the left end of the scraper. The second synchronous toothed belt pulley is connected to another second synchronous toothed belt pulley via a second synchronous toothed belt. The other second synchronous toothed belt pulley is fixedly connected to the left end of the leftmost of the two first rotating shafts.

[0019] Preferably, the heat dissipation device includes a dust cover and a first synchronous toothed belt. The dust cover is installed in the mounting slot of the central control system. A gear transmission is installed on the rear side of the dust cover. A fan blade is fixedly connected to the output shaft of the gear transmission. A first bevel gear is fixedly connected to the input shaft of the gear transmission. A second bevel gear meshes with the right side of the first bevel gear. The second bevel gear is rotatably mounted on the mounting slot of the central control system. A second rotating shaft is fixedly connected to the right side of the second bevel gear. A first synchronous toothed belt pulley is fixedly connected to the right side of the second rotating shaft. Another first synchronous toothed belt pulley is connected to the first synchronous toothed belt drive through the first synchronous toothed belt. The other first synchronous toothed belt pulley is fixedly connected to the right end of the rightmost of the two first rotating shafts. A support plate is fixedly connected to the right side of the heating device body. A rotating motor is installed on the inner wall of the support plate. The output shaft of the rotating motor is fixedly connected to the right side of the other first synchronous toothed belt pulley.

[0020] In summary, this application includes at least one of the following beneficial technical effects:

[0021] 1. Three-stage filtration with self-cleaning design, suitable for dusty environments: The filtration device adopts a three-stage filtration structure with a filtration accuracy of 0.1μm, which can effectively intercept impurities such as field dust and straw debris, and avoid wear and tear on the oxygen generator and burner; combined with the scraper self-cleaning and dust suction module, it ensures smooth filtration.

[0022] 2. High-efficiency mixing and precise proportioning improve heating efficiency and quality: The mixing chamber has a built-in wear-resistant mixing blade, which, together with a multi-hole nozzle and atomizing nozzle, achieves uniform mixing of gas and oxygen, improving combustion efficiency.

[0023] 3. Single motor coordinated drive and efficient heat dissipation, energy saving and stable: The single rotating motor drives the filtration, mixing and heat dissipation multiple functions to work together; and the fan blade heat dissipation combined with the honeycomb dust cover can improve heat dissipation efficiency;

[0024] This invention not only effectively overcomes the shortcomings of existing technologies, such as low heating accuracy, uneven mixing of gas and oxygen, incomplete filtration of industrial dust, and poor high-temperature stability of the central control system, but also provides a localized strengthening heating device for hot-rolled steel billets that meets the stringent requirements of the industrial field through an innovative combination of four-stage high-efficiency filtration self-cleaning, precise gas-oxygen mixing ratio, CNC adjustable local heating, and single-motor collaborative transmission. It is suitable for the production and processing of steel billets for various industrial machinery parts such as engineering machinery, machine tools, and rail transportation, and has high practical value and promising prospects for promotion. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure in Embodiment 1 of this application;

[0026] Figure 2 This is a schematic diagram of the internal structure in Embodiment 1 of this application;

[0027] Figure 3 This is a schematic diagram of the heat dissipation device structure in Embodiment 1 of this application;

[0028] Figure 4 This is a schematic diagram of the filter device structure in Embodiment 1 of this application;

[0029] Figure 5 This is a schematic diagram of the heating mechanism structure in Embodiment 1 of this application;

[0030] Reference numerals: 1. Heating equipment body; 2. Central control system; 3. Support plate; 4. Rotating motor; 5. First synchronous toothed pulley; 6. First synchronous toothed belt; 7. Second synchronous toothed belt; 8. Second synchronous toothed pulley; 9. Oxygen generator; 10. First rotating shaft; 11. First output pump; 12. Nozzle; 13. Second output pump; 14. Gas replenishment module; 15. Burner; 16. One-way valve; 17. Second rotating shaft; 18. Fan blade; 19. Dust cover; 20. First bevel gear; 21. Second bevel gear; 22. Fixed frame; 23. Scraper; 24. Filter module; 25. Dust suction module; 26. Multi-hole nozzle; 27. Worm gear; 28. Worm wheel; 29. ​​Mixing blade; 30. Mixing chamber; 31. Gear transmission. Detailed Implementation

[0031] Example 1:

[0032] The following is in conjunction with the appendix Figures 1-5 The first embodiment of this application will be described in further detail.

[0033] A localized intensified heating device for hot-rolled steel billets before they exit the furnace includes: a heating equipment body 1; and a central control system 2, installed on the right side of the heating equipment body 1.

[0034] A heating mechanism, mounted on the heating equipment body 1, is used to heat the steel billet. The heating mechanism includes a burner 15, which is installed on the inner wall of the heating equipment body 1. A one-way valve 16 is installed at the inlet of the burner 15. A mixing chamber 30 is installed at the inlet of the one-way valve 16. A mixing blade 29 is rotatably mounted inside the mixing chamber 30. A worm gear 28 is fixedly connected to the top of the mixing blade 29. A worm 27 is meshed on the front side of the worm gear 28. The worm 27 is rotatably mounted on the mounting plate of the mixing blade 29. A first rotating shaft 10 is fixedly connected to both ends of the worm 27.

[0035] Specifically, the burner 15 is a CNC adjustable high-temperature burner, installed on the inner wall of the heating equipment body 1. The spray angle and spray distance of the burner 15 can be infinitely adjusted to adapt to the local heating needs of industrial steel billets of different specifications and locations. A one-way valve 16 is installed at the inlet of the burner 15. The one-way valve 16 is a high-temperature resistant anti-backflow check valve to prevent the backflow of the gas and oxygen mixture, eliminate the risk of backfire, and ensure industrial production safety. A mixing chamber 30 is installed at the inlet of the one-way valve 16. The mixing chamber 30 is made of high-temperature resistant stainless steel and has a heat-insulating coating on the inner wall, which has excellent heat preservation effect and reduces heat loss. A mixing blade 29 is rotated inside the mixing chamber 30. The mixing blade 29 is made of high-temperature alloy and has a wear-resistant coating on the surface, which is high-temperature resistant, wear-resistant, and has a long service life. A worm wheel 28 is fixedly connected to the top of the mixing blade 29. A worm 27 is meshed on the front side of the worm wheel 28. The worm 27 and the worm wheel 28 cooperate to achieve speed reduction transmission, which improves the rotational stability and mixing uniformity of the mixing blade 29.

[0036] An oxygen replenishment device is located on the left side of the heating mechanism and is used to input oxygen into the heating mechanism. The oxygen replenishment device includes an oxygen generator 9, which is installed inside the heating equipment body 1. A first output pump 11 is installed at the output port of the oxygen generator 9. A multi-hole nozzle 26 is installed on the inner wall of the mixing chamber 30. The output port of the first output pump 11 is connected to the input port hose of the multi-hole nozzle 26.

[0037] Specifically, the oxygen generator 9 is installed inside the heating equipment body 1 and uses pressure swing adsorption (PSA) oxygen production technology to produce high-purity oxygen. The oxygen production is adjustable to meet the heating requirements of different power levels. The output port of the oxygen generator 9 is equipped with a first output pump 11, which is a high-precision variable frequency metering pump that can precisely adjust the oxygen output according to the heating process requirements. The inner wall of the mixing chamber 30 is equipped with a multi-hole nozzle 26, which has multiple injection holes evenly distributed in a ring array to disperse oxygen into a fine airflow, improving the mixing effect with the fuel gas. The output port of the first output pump 11 and the input port of the multi-hole nozzle 26 are fixedly connected by a high-temperature and high-pressure resistant hose to ensure stable and safe gas delivery.

[0038] A gas replenishment device is located on the right side of the heating mechanism and is used to replenish gas into the heating mechanism. The gas replenishment device includes a gas replenishment module 14, which is installed inside the heating equipment body 1. A second output pump 13 is installed at the output port of the gas replenishment module 14. The heating equipment body 1 is provided with a heating chamber for processing. A nozzle 12 is installed on the right side of the heating chamber. The output port of the second output pump 13 and the input port of the nozzle 12 are connected by a hose.

[0039] Specifically, the gas replenishment module 14 is installed inside the heating equipment body 1, and has built-in gas filtration, pressure stabilization, and explosion-proof components to ensure safe and stable gas delivery. A second output pump 13 is installed at the output port of the gas replenishment module 14. The second output pump 13 is a high-precision variable frequency screw pump, which can be coordinated with the first output pump 11 to achieve precise and controllable mixing ratio of gas and oxygen. A nozzle 12 is installed on the right side of the heating chamber of the heating equipment body 1. The nozzle 12 is a high-pressure atomizing nozzle, which can atomize the gas into fine droplets, greatly increasing the contact area and mixing uniformity with oxygen. The output port of the second output pump 13 and the input port of the nozzle 12 are fixedly connected by a high-temperature and high-pressure resistant hose. The outer layer of the hose is equipped with a flame-retardant protective sleeve to improve the safety of industrial production.

[0040] The filter device, located on the left side of the oxygen replenishment device, is used to filter the air entering the oxygen generator 9, intercepting impurities such as field dust and straw fragments, and preventing equipment wear.

[0041] The heat dissipation device is located at the rear of the central control system 2 to efficiently dissipate heat from the central control system 2, ensuring stable operation of the central control system 2 in high-temperature environments and avoiding problems such as system crashes and parameter drift.

[0042] In this embodiment, the filtration device includes a fixed frame 22 and a second synchronous toothed belt 7. The inlet of the oxygen generator 9 is fixedly connected to the fixed frame 22. The fixed frame 22 is fixedly connected to a filtration module 24. A scraper 23 is rotatably connected to the center point of the fixed frame 22. The scraper 23 abuts against and overlaps with the filtration module 24. A dust suction module 25 is installed at the bottom of the fixed frame 22. A second synchronous toothed pulley 8 is fixedly connected to the left end of the scraper 23. The second synchronous toothed pulley 8 is connected to another second synchronous toothed pulley 8 via the second synchronous toothed belt 7. The other second synchronous toothed pulley 8 is fixedly connected to the left end of the left side of the two first rotating shafts 10.

[0043] Specifically, the inlet of the oxygen generator 9 is fixedly connected to the fixed frame 22 via a flange. The fixed frame 22 is made of high-strength steel plate welded together and subjected to aging treatment to eliminate internal stress, resulting in a stable structure. A filter module 24 is fixedly connected inside the fixed frame 22. The filter module 24 adopts a multi-stage high-efficiency filtration structure, which can effectively intercept impurities such as metal dust, welding fumes, and oil particles in the industrial production environment, with excellent filtration effect. A scraper 23 is rotatably connected to the center point of the fixed frame 22. The scraper 23 is made of wear-resistant and high-temperature resistant material and closely contacts and overlaps with the filter surface of the filter module 24, which can efficiently scrape off impurities attached to the surface of the filter module. A dust collection module 25 is installed at the bottom of the fixed frame 22. The dust collection module 25 adopts an industrial-grade negative pressure vacuum cleaner, which can promptly suck away and collect the impurities scraped off by the scraper, avoiding secondary pollution.

[0044] In this embodiment, the heat dissipation device includes a dust cover 19 and a first synchronous toothed belt 6. The dust cover 19 is installed in the mounting slot of the central control system 2. A gear transmission 31 is installed on the rear side of the dust cover 19. The output shaft of the gear transmission 31 is fixedly connected to a fan blade 18. The input shaft of the gear transmission 31 is fixedly connected to a first bevel gear 20. A second bevel gear 21 meshes with the right side of the first bevel gear 20. The second bevel gear 21 is rotatably mounted on the mounting slot of the central control system 2. A second rotating shaft 17 is fixedly connected to the right side of the second bevel gear 21. A first synchronous toothed pulley 5 is fixedly connected to the right side of the second rotating shaft 17. The first synchronous toothed pulley 5 is connected to another first synchronous toothed pulley 5 via the first synchronous toothed belt 6. The other first synchronous toothed pulley 5 is fixedly connected to the right end of the rightmost first rotating shaft 10 of the two first rotating shafts 10. A support plate 3 is fixedly connected to the right side of the heating device body 1. A rotating motor 4 is installed on the inner wall of the support plate 3. The output shaft of the rotating motor 4 is fixedly connected to the right side of the other first synchronous toothed pulley 5.

[0045] The implementation principle of a localized enhanced heating device for hot-rolled steel billets before exiting the furnace according to an embodiment of this application is as follows: 1. Industrial air filtration and oxygen preparation stage: The operator inputs the billet heating parameters through the central control system 2 and starts the device; the rotating motor 4 starts, and the rotating motor 4 drives the two first rotating shafts 10 and the worm gear 27 to rotate synchronously through the first synchronous toothed pulley 5; the first synchronous toothed pulley 5 drives the other first synchronous toothed pulley 5 to rotate through the first synchronous toothed belt 6; the first synchronous toothed pulley 5 drives the second bevel gear 21 to rotate; the second bevel gear 21 drives the first bevel gear 20 to rotate; the first bevel gear 20 drives the fan blades to rotate for heat dissipation.

[0046] 2. Gas Delivery and High-Efficiency Mixing Stage: The central control system 2 controls the gas replenishment module 14 to start according to the preset gas-oxygen mixing ratio. After the gas is filtered and stabilized by the built-in filter, it is accurately metered and delivered to the nozzle 12 by the second output pump 13. After being atomized under high pressure, it is injected into the mixing chamber 30. The worm gear 27 and the worm wheel 28 mesh and drive each other. The worm wheel 28 drives the mixing blade 29 to rotate at high speed in the mixing chamber, which fully stirs and mixes the oxygen gas flow and the atomized gas, resulting in high mixing uniformity. The one-way valve 16 strictly prevents the backflow of the mixed gas, ensuring that the mixed gas is stably and safely delivered to the burner 15. According to the preset parameters, the central control system 2 controls the burner 15 to adjust the injection angle and injection distance, so as to accurately focus the high-temperature flame generated by the combustion of the mixed gas on the key parts of the steel billet.

[0047] 3. High-efficiency heat dissipation stage of central control system 2: The first rotating shaft 10 on the left drives the second synchronous toothed pulley 8 to rotate. The second synchronous toothed pulley 8 drives another second synchronous toothed pulley 8 through the second synchronous toothed belt 7 to drive the scraper to clean the filter module 24. At the same time, the oxygen generator 9 starts and the dust collection module 25 works synchronously to suck impurities into the collection box to ensure that the filter channel is unobstructed. Air in the industrial environment enters the fixed frame 22 and becomes clean air after being filtered four times by the filter module 24. The high-purity oxygen produced by the oxygen generator 9 is accurately metered by the first output pump 11 and delivered to the multi-hole nozzle 26 of the mixing chamber 30, where it is dispersed into a fine airflow and sprayed into the mixing chamber.

[0048] Example 2:

[0049] The difference between this embodiment and Embodiment 1 is that a temperature sensor is installed inside the heating device body 1 to detect the internal temperature of the heating device body.

[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A device for localized intensified heating of hot-rolled steel billets before they exit the furnace, comprising: Heating equipment body (1); central control system (2), installed on the right side of heating equipment body (1); characterized in that: A heating mechanism is provided on the heating equipment body (1) for heating steel billets; the heating mechanism includes a burner (15), the burner (15) is installed on the inner wall of the heating equipment body (1), a one-way valve (16) is installed at the inlet of the burner (15), a mixing chamber (30) is installed at the inlet of the one-way valve (16), a mixing blade (29) is rotatably provided inside the mixing chamber (30), a worm wheel (28) is fixedly connected to the top of the mixing blade (29), a worm (27) is meshed on the front side of the worm wheel (28), the worm (27) is rotatably provided on the mounting plate of the mixing blade (29), and a first rotating shaft (10) is fixedly connected to both ends of the worm (27). An oxygen replenishment device is located on the left side of the heating mechanism and is used to input oxygen into the heating mechanism. The oxygen replenishment device includes an oxygen generator (9), which is installed inside the heating equipment body (1). A first output pump (11) is installed at the output port of the oxygen generator (9). A multi-hole nozzle (26) is installed on the inner wall of the mixing chamber (30). The output port of the first output pump (11) is connected to the input port hose of the multi-hole nozzle (26). A gas replenishment device is located on the right side of the heating mechanism and is used to replenish gas into the heating mechanism. The gas replenishment device includes a gas replenishment module (14), which is installed inside the heating equipment body (1). A second output pump (13) is installed at the output port of the gas replenishment module (14). The heating equipment body (1) is provided with a heating chamber for processing. A nozzle (12) is installed on the right side of the heating chamber. The output port of the second output pump (13) and the input port of the nozzle (12) are connected by a hose. A filter device is located on the left side of the oxygen replenishment device and is used for filtration. The filter device includes a fixed frame (22) and a second synchronous toothed belt (7). The input port of the oxygen generator (9) is fixedly connected to the fixed frame (22). The fixed frame (22) is fixedly connected to a filter module (24). A scraper (23) is rotatably connected to the center point of the fixed frame (22). The scraper (23) and the filter module (24) abut against each other. A heat dissipation device is located on the rear side of the central control system (2) and is used to dissipate heat from the central control system (2). The heat dissipation device includes a dust cover (19) and a first synchronous toothed belt (6). The dust cover (19) is installed in the mounting slot of the central control system (2). A gear transmission (31) is installed on the rear side of the dust cover (19). The output shaft of the gear transmission (31) is fixedly connected to a fan blade (18).

2. The localized intensified heating device for hot-rolled steel billets before exiting the furnace according to claim 1, characterized in that: The bottom of the fixed frame (22) is equipped with a dust collection module (25), and the left end of the scraper (23) is fixedly connected to a second synchronous toothed pulley (8). The second synchronous toothed pulley (8) is connected to another second synchronous toothed pulley (8) through a second synchronous toothed belt (7). The other second synchronous toothed pulley (8) is fixedly connected to the left end of the first rotating shaft (10) located on the left side of the two first rotating shafts (10).

3. The localized intensified heating device for hot-rolled steel billets before exiting the furnace according to claim 2, characterized in that: The input shaft of the gear transmission (31) is fixedly connected to a first bevel gear (20), and a second bevel gear (21) meshes with the right side of the first bevel gear (20). The second bevel gear (21) is rotatably mounted on the mounting slot of the central control system (2). A second rotating shaft (17) is fixedly connected to the right side of the second bevel gear (21). A first synchronous toothed pulley (5) is fixedly connected to the right side of the second rotating shaft (17). The first synchronous toothed pulley (5) is connected to another first synchronous toothed pulley (5) via a first synchronous toothed belt (6). The other first synchronous toothed pulley (5) is fixedly connected to the right end of the first rotating shaft (10) located on the right side of the two first rotating shafts (10). A support plate (3) is fixedly connected to the right side of the heating device body (1). A rotating motor (4) is installed on the inner wall of the support plate (3). The output shaft of the rotating motor (4) is fixedly connected to the right side of the other first synchronous toothed pulley (5).

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