Heat treatment device for steel production

Abstract

The invention discloses a heat treatment device for steel production, and belongs to the technical field of smelting, the heat treatment device comprises a bearing frame, a protective shell is mounted on the upper surface of the bearing frame, an electromagnetic heating ring is connected to the interior of the protective shell, and two first fixing plates are connected to the inner wall of the protective shell; a first motor is mounted on the upper surface of each first fixing plate, a metal brush is connected to the output end of each first motor, and a mounting shell is connected to the interior of the protective shell. A metal brush is driven by a first motor to operate, oxide skin and other oxides generated on the surface of heated steel can be efficiently cleaned, the situation that the quality of the steel is affected by attachment of the oxides is avoided, a threaded rod is driven by a second motor to rotate, a sliding block drives a scraping plate to move, and the oxides scattered in a protective shell can be collected in a centralized mode; and in cooperation with the synergistic effect of a dust suction box, a dust suction pipe, a first flow dividing pipe and a dust suction head, the collected oxides can be sucked away and stored in time.

Description

Technical Field

[0001] This invention relates to the field of metallurgical technology, and in particular to a heat treatment apparatus for steel production. Background Technology

[0002] In steel production, heat treatment plays a significant role in optimizing performance: it can flexibly adjust the balance between the strength and plasticity of steel, thereby precisely meeting the usage requirements of various scenarios such as building reinforcement. At the same time, it can effectively eliminate internal stress and refine grains in steel, thus fundamentally enhancing the practical value and reliability of steel.

[0003] When steel enters the heating process, as the temperature gradually rises, its surface will undergo an oxidation reaction with oxygen and liquid vapor in the air, resulting in impurities such as oxide scale. If these impurities are not treated in time, they will damage the flatness of the steel surface, making it difficult to guarantee dimensional accuracy during subsequent processing. At the same time, during the quenching stage, the coolant will accumulate sediment after long-term use. This sediment will clog the coolant circulation pipes and nozzles, affecting the normal circulation and spraying of the coolant. Summary of the Invention

[0004] The purpose of this invention is to solve the problem of impurities forming on the surface of steel after heating in the prior art, and to propose a heat treatment device for steel production.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A heat treatment apparatus for steel production includes a support frame, a protective shell mounted on the upper surface of the support frame, an electromagnetic heating coil connected inside the protective shell, two first fixing plates connected to the inner wall of the protective shell, a first motor mounted on the upper surface of each first fixing plate, a metal brush connected to the output end of each first motor, a mounting shell connected inside the protective shell, a threaded rod rotatably connected inside the mounting shell, a slider threadedly connected to the outer surface of the threaded rod, a scraper connected to the bottom surface of the slider, the bottom surface of the scraper contacting the upper surface of the support frame, a second fixing plate connected to the outer surface of the protective shell, a second motor connected to the outer surface of the second fixing plate, and the output end of the second motor penetrating the protective shell and connected to the front end of the threaded rod.

[0006] Preferably, the bottom surface of the support frame is connected to two support plates, and a dust collection box is installed on the upper surface of each support plate. The input end of each dust collection box is connected to a dust collection pipe. The outer surface of the support frame is connected to two first diversion pipes. The end of each dust collection pipe away from the dust collection box is connected to the outer surface of the first diversion pipe. The outer surface of each first diversion pipe is connected to two connecting pipes. The end of each connecting pipe away from the first diversion pipe is connected to a dust collection head. The outer surface of each dust collection head extends through the protective shell and into the interior of the protective shell.

[0007] Preferably, the protective shell is provided with a first support frame on both the left and right sides. The bottom surface of each first support frame is connected to the upper surface of the bearing frame. Two first rotating rods are rotatably connected inside each first support frame. A first limiting wheel is connected to the outer surface of each first rotating rod. A third fixing plate is connected to the outer surface of each first support frame. A third motor is connected to the upper surface of each third fixing plate. The output end of each third motor is connected to the front end of one of the first rotating rods.

[0008] Preferably, the bottom surface of the support frame is connected to a bracket, the upper surface of the bracket is connected to a coolant tank, the outer surface of the coolant tank extends through the support frame to the top of the support frame, and a filter box is installed on the upper surface of the support frame.

[0009] Preferably, the upper surface of the coolant tank is connected to two first connecting brackets, and the sides of the two first connecting brackets that are close to each other are connected to a splash guard, and the inner wall of the splash guard is connected to two sets of nozzles.

[0010] Preferably, a liquid pump is installed on the inner bottom wall of the coolant tank, the output end of the liquid pump is connected to a liquid delivery pipe, and the end of the liquid delivery pipe away from the liquid pump is connected to the input end of the filter box.

[0011] Preferably, the output end of the filter box is connected to a connecting pipe, and the end of the connecting pipe away from the filter box is connected to a second diverter pipe. The outer surface of the second diverter pipe is connected to two sets of liquid delivery pipes. The end of each set of liquid delivery pipes away from the second diverter pipe passes through the splash guard and is connected to the outer surface of the corresponding nozzle.

[0012] Preferably, a second connecting frame is connected to the upper surface of each of the first connecting frames, and a circular tube is connected to the side of the two second connecting frames that are close to each other. A mounting bracket is connected to the inner wall of the circular tube, a smoke extractor is provided on the upper surface of the mounting bracket, and a connecting valve is connected to the top of the circular tube.

[0013] Preferably, the filter box has two sets of sliding grooves inside, and a filter plate is slidably connected inside each set of sliding grooves. The upper surface of the filter box has a raised ring, and a top cover is movably connected to the upper surface of the filter box. The bottom surface of the top cover has a groove that matches the raised ring, and a reserved groove that matches the filter plate.

[0014] Preferably, a second support frame is connected to the upper surface of the support frame, and two second rotating rods are rotatably connected inside the second support frame. A second limiting wheel is connected to the outer surface of each second rotating rod, and a control box is installed on the upper surface of the support frame.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The first motor drives the metal brush to operate, which can efficiently clean the oxide scale and other oxides generated on the surface of the heated steel, preventing oxide adhesion from affecting the quality of the steel. The second motor drives the threaded rod to rotate, which causes the slider to move the scraper, which can collect the oxides scattered inside the protective shell, preventing the oxides from accumulating. With the coordinated action of the dust collection box, dust collection pipe, first diversion pipe and dust collection head, the collected oxides can be sucked away and stored in time, effectively keeping the inside of the device clean, reducing the interference of oxides on the heat treatment process, and ensuring the quality of steel heat treatment and the stable operation of the device.

[0016] 2. With the help of a liquid pump and a filter box, sediment in the coolant can be effectively removed. This not only prevents sediment from clogging the nozzles and affecting the spraying effect of the coolant, but also prevents it from accumulating in the pipes and causing poor flow. This ensures the stable operation of the coolant circulation system and the smooth progress of the cooling process in quenching and other processes.

[0017] 3. The exhaust fan can quickly draw the fumes generated during the quenching process into the circular pipe, and then, through the connecting valve and the corresponding external pipeline, the fumes can be stably discharged to the designated waste gas treatment area, ensuring the air quality of the workshop, reducing the potential health impact of fumes on operators, and helping to maintain a good production environment in the workshop. Attached Figure Description

[0018] Figure 1 This is a front view of a heat treatment apparatus for steel production proposed in this invention; Figure 2 This is a bottom view of a heat treatment apparatus for steel production proposed in this invention; Figure 3 This is a schematic diagram of the internal structure of the protective shell in a heat treatment device for steel production proposed in this invention; Figure 4 This is a schematic diagram of the internal structure of the mounting shell in a heat treatment device for steel production proposed in this invention; Figure 5 This is a schematic diagram of the structure of the first support frame in a heat treatment device for steel production proposed in this invention; Figure 6 This is a schematic diagram of the structure of a cooling liquid tank in a heat treatment device for steel production proposed in this invention; Figure 7 This is a schematic diagram of the internal structure of a circular tube in a heat treatment device for steel production proposed in this invention. Figure 8 This is a schematic diagram of the filter box in a heat treatment device for steel production proposed in this invention; Figure 9 This is a schematic diagram of the structure of the upper cover in a heat treatment device for steel production proposed in this invention.

[0019] In the diagram: 1. Support frame; 2. Protective shell; 3. Electromagnetic heating coil; 4. First fixing plate; 5. First motor; 6. Metal brush; 7. Mounting shell; 8. Threaded rod; 9. Slider; 10. Scraper; 11. Second fixing plate; 12. Second motor; 13. Support plate; 14. Dust collection box; 15. Dust collection pipe; 16. First diverter pipe; 17. Connecting pipe; 18. Dust collection head; 19. First support frame; 20. First rotating rod; 21. First limiting wheel; 22. Third fixing plate; 23. Third motor; 24. Second support frame ; 25. Second rotating rod; 26. Second limiting wheel; 27. Coolant tank; 28. Bracket; 29. ​​First connecting frame; 30. Splash shield; 31. Nozzle; 32. Liquid pump; 33. Infusion pipe; 34. Filter box; 35. Connecting pipe; 36. Second diversion pipe; 37. Liquid delivery pipe; 38. Second connecting frame; 39. Round pipe; 40. Mounting bracket; 41. Exhaust fan; 42. Connecting valve; 43. Sliding groove; 44. Filter plate; 45. Raised ring; 46. Top cover; 47. Groove; 48. Reserved groove; 49. Control box. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0021] Example, refer to Figure 1-9A heat treatment device for steel production includes a support frame 1, with a protective shell 2 mounted on the upper surface of the support frame 1. An electromagnetic heating coil 3 is connected inside the protective shell 2. The electromagnetic heating coil 3 operates based on electromagnetic induction, generating eddy currents through electromagnetic induction and utilizing the thermal effect of these eddy currents to heat the steel. Two first fixing plates 4 are connected to the inner wall of the protective shell 2. A first motor 5 is mounted on the upper surface of each first fixing plate 4. A metal brush 6 is connected to the output end of each first motor 5. The metal brush 6 is made of high-carbon alloy steel wire with high hardness and wear resistance, effectively scraping away strongly adhering oxide scale from the steel surface. This method is relatively low-cost and suitable for heat treatment cleaning of ordinary carbon steel. A mounting shell 7 is connected inside the protective shell 2, with a threaded connection inside the mounting shell 7. The main function of the threaded rod 8 is to convert rotational motion into linear motion. Specifically, when the second motor 12 is started, its output end drives the threaded rod 8 to rotate. Since the threaded rod 8 is threadedly connected to the slider 9, and the slider 9 is limited by the mounting shell 7 and other structures and cannot rotate synchronously with the threaded rod 8, the rotation of the threaded rod 8 will cause the slider 9 to move back and forth along the axis of the threaded rod 8, thereby driving the scraper 10 connected to the slider 9 to move synchronously. The outer surface of the threaded rod 8 is threadedly connected to the slider 9, and the bottom surface of the slider 9 is connected to the scraper 10. The bottom surface of the scraper 10 is in contact with the upper surface of the support frame 1. The outer surface of the protective shell 2 is connected to the second fixing plate 11, and the outer surface of the second fixing plate 11 is connected to the second motor 12. The output end of the second motor 12 passes through the protective shell 2 and is connected to the front end of the threaded rod 8.

[0022] Furthermore, the bottom surface of the support frame 1 is connected to two support plates 13, and each support plate 13 has a dust collection box 14 installed on its upper surface. The working principle of the dust collection box 14 is mainly based on the negative pressure adsorption effect. It uses the suction force generated by its built-in pump to draw in and collect impurities such as oxides from the protective shell 2. Specifically, after the dust collection box 14 is started, its internal power components will operate, creating a relative negative pressure state inside the box. This negative pressure is transmitted to the first diversion pipe 16 through the dust collection pipe 15, and then conducted to the protective shell 2 through the connecting pipe 17. The vacuum head 18 inside the shell 2 is connected to the input end of each vacuum box 14 and the vacuum pipe 15. The outer surface of the support frame 1 is connected to two first diversion pipes 16. The end of each vacuum pipe 15 away from the vacuum box 14 is connected to the outer surface of the first diversion pipe 16. The outer surface of each first diversion pipe 16 is connected to two connecting pipes 17. The end of each connecting pipe 17 away from the first diversion pipe 16 is connected to the vacuum head 18. The outer surface of each vacuum head 18 penetrates the protective shell 2 and extends into the interior of the protective shell 2.

[0023] Furthermore, the protective shell 2 has first support frames 19 on both its left and right sides. The bottom surface of each first support frame 19 is connected to the upper surface of the support frame 1. Each first support frame 19 has two first rotating rods 20 rotatably connected inside. Each first rotating rod 20 has a first limiting wheel 21 connected to its outer surface. The main function of the first limiting wheel 21 is to transport and guide the steel. Specifically, when the third motor 23 starts, it drives the first rotating rods 20 to rotate, thereby causing the first limiting wheels 21 to rotate synchronously. The steel is then transported and guided by the first limiting wheels 21. Under the rotation, the steel can be smoothly transported to the heating area and subsequent processing area inside the protective shell 2. At the same time, the first limiting wheels 21 on both sides can restrict the position of the steel to prevent the steel from shifting or shaking during the transportation process, ensuring that the steel can accurately pass through each processing station and ensuring the stable progress of the heat treatment process. Each first support frame 19 has a third fixing plate 22 connected to its outer surface, and each third fixing plate 22 has a third motor 23 connected to its upper surface. The output end of each third motor 23 is connected to the front end of one of the first rotating rods 20.

[0024] Furthermore, a bracket 28 is connected to the bottom surface of the support frame 1, and a coolant tank 27 is connected to the upper surface of the bracket 28. The coolant tank 27 is the core component for storing and supplying coolant in this heat treatment device. Specifically, it provides a stable source of coolant for the quenching process, ensuring that the nozzle 31 can continuously cool the heated steel. Through the internally installed liquid pump 32, the coolant in the tank is transported to the filter box 34 via the liquid delivery pipe 33. After filtration and purification, it is resupplyed to the nozzle 31, realizing the recycling of coolant and reducing resource waste. The outer surface of the coolant tank 27 extends through the support frame 1 and above the support frame 1. The filter box 34 is installed on the upper surface of the support frame 1. The main function of filter 34 is to filter and purify the coolant used for quenching, ensuring the stable operation of the coolant circulation system. Specifically, when the coolant enters the filter box 34 from the coolant tank 27 via the delivery pipe 33, the internal filter plate 44 intercepts oxide scale debris, impurities, and other contaminants in the coolant, preventing these pollutants from entering the subsequent connecting pipe 35, delivery pipe 37, and nozzle 31, thus preventing pipe blockage or poor spraying from the nozzle 31. Simultaneously, the purified coolant acts more evenly on the steel surface, ensuring the stability of the quenching effect. Furthermore, the filter plate 44 can be easily replaced by opening the top cover 46, maintaining continuous filtration capacity and extending the coolant's service life. The purified coolant obtained after filtration is then pumped back to the coolant tank 27 by a power pump for reuse.

[0025] Furthermore, the upper surface of the coolant tank 27 is connected to two first connecting brackets 29. The two first connecting brackets 29 are connected to a splash guard 30 on the side that is close to each other. The inner wall of the splash guard 30 is connected to two sets of nozzles 31. The nozzles 31 are the key components for quenching and cooling in this device. Their main function is to accurately and evenly spray the purified coolant onto the heated steel surface.

[0026] Furthermore, a liquid pump 32 is installed on the inner bottom wall of the coolant tank 27. The output end of the liquid pump 32 is connected to a liquid delivery pipe 33. The end of the liquid delivery pipe 33 away from the liquid pump 32 is connected to the input end of the filter box 34. Thanks to the efficient removal of most of the oxides on the surface of the steel by the metal brush 6 in the previous process, the impurities generated by the steel in the subsequent quenching process are only a small number of fine particles. Moreover, the liquid pump 32 is a sewage pump with only one spiral flow channel on the impeller. The flow channel is wide and has no blades to separate it, so there is enough space for impurities to pass through. When the pump body of the liquid pump 32 drives the single-channel impeller to rotate, the sewage and impurities directly enter the spiral flow channel. Since there are no blades to block the flow channel and the width is sufficient, even larger particles of impurities can flow smoothly along the flow channel with the liquid and will not be stuck by the blades, thereby avoiding the accumulation of impurities in the flow channel and achieving unblocked transportation.

[0027] Furthermore, the output end of the filter box 34 is connected to a connecting pipe 35, and the end of the connecting pipe 35 away from the filter box 34 is connected to a second diverter pipe 36. The outer surface of the second diverter pipe 36 is connected to two sets of liquid delivery pipes 37. The end of each set of liquid delivery pipes 37 away from the second diverter pipe 36 passes through the splash guard 30 and is connected to the outer surface of the corresponding nozzle 31.

[0028] Furthermore, each first connecting frame 29 has a second connecting frame 38 connected to its upper surface. The two second connecting frames 38 are connected to a circular tube 39 on their adjacent sides. The inner wall of the circular tube 39 is connected to a mounting frame 40. The upper surface of the mounting frame 40 has a smoke extraction fan 41. The smoke extraction fan 41 is the core component for handling quenching fumes. Its main function is to actively exhaust the fumes generated during the quenching process. When steel is quenched, the high-temperature steel comes into contact with the coolant and generates a large amount of fumes. At this time, the smoke extraction fan 41 is activated. Using the suction generated by its operation, the fumes near the splash guard 30 are quickly drawn into the circular tube 39. Subsequently, the fumes can be discharged through the connecting valve 42 at the top of the circular tube 39 and the external pipeline, preventing the fumes from spreading in the workshop. This not only ensures the air quality in the workshop and reduces the health impact on the operators, but also reduces the interference of fumes adhering to the equipment on the operating accuracy of the device. The top of the circular tube 39 is connected to the connecting valve 42. The main function of the connecting valve 42 is as a connecting component for fumes discharge. It can be connected to the external pipeline to provide a discharge channel for the fumes in the circular tube 39.

[0029] Furthermore, the filter box 34 has two sets of sliding grooves 43 inside, and a filter plate 44 is slidably connected inside each set of sliding grooves 43. The upper surface of the filter box 34 has a raised ring 45, and a cover 46 is movably connected to the upper surface of the filter box 34. The cover 46 is securely assembled with the filter box 34 using buckles and bolts. The bottom surface of the cover 46 has a groove 47 that matches the raised ring 45, and a reserved groove 48 that matches the filter plate 44. The raised ring 45 and the groove 47 fit together, which can greatly improve the sealing of the connection between the cover 46 and the box body, effectively preventing unfiltered coolant from leaking from the gaps. The sliding grooves 43 and the reserved grooves 48 can precisely limit the position of the filter plate 44, ensuring that the filter plate 44 fits tightly against the inner wall of the box after installation, thereby preventing the coolant from flowing directly away from the gaps without being filtered by the filter plate 44, and ensuring the reliability of the filtration effect.

[0030] Furthermore, a second support frame 24 is connected to the upper surface of the support frame 1. Two second rotating rods 25 are rotatably connected inside the second support frame 24. A second limiting wheel 26 is connected to the outer surface of each second rotating rod 25. The main function of the second limiting wheel 26 is to support and limit the steel, ensuring the stability and accuracy of the steel during the transmission process. Specifically, it works in conjunction with the first limiting wheel 21 to support the steel, distribute the weight of the steel, prevent the steel from sagging or bending excessively due to gravity, and ensure that the steel can smoothly pass through each process of the heat treatment device. At the same time, the second limiting wheel 26 can restrict the position of the steel so that the steel can move accurately along the set path, pass smoothly through the electromagnetic heating coil 3 for heating, and pass through the anti-splash frame 30 for quenching and cooling, thereby ensuring the stable progress of the heat treatment process and the quality of the steel treatment. A control box 49 is installed on the upper surface of the support frame 1.

[0031] This invention first connects to an external pipeline via a connecting valve 42, then activates the device via a control box 49. Next, a third motor 23 rotates, driving the first rotating rod 20 to rotate, causing the first limiting wheel 21 to rotate and conveying the steel into the protective shell 2. The second limiting wheel 26 supports the steel. Then, a second motor 12 rotates, driving the threaded rod 8 to rotate, causing the slider 9 to move the scraper 10, collecting oxides from inside the protective shell 2. Subsequently, the dust collection box 14, through the suction pipe 15, the first diversion pipe 16, the connecting pipe 17, and the suction tube... The head 18 draws away the oxides, and the heated steel is transported to the splash guard 30. The liquid pump 32 starts and sends the coolant in the coolant tank 27 to the filter box 34 for filtration through the liquid delivery pipe 33. The filtered coolant is sprayed out from the nozzle 31 through the connecting pipe 35, the second diversion pipe 36, and the liquid delivery pipe 37 to quench the steel. During quenching, the smoke extraction fan 41 starts and discharges the generated smoke through the round pipe 39, the connecting valve 42, and the external pipe. The filter plate 44 in the filter box 34 can filter impurities. When cleaning is required, the top cover 46 can be opened and the filter plate can be removed.

[0032] 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 heat treatment apparatus for steel production, comprising a support frame (1), wherein a protective shell (2) is mounted on the upper surface of the support frame (1), characterized in that, The protective shell (2) is internally connected to an electromagnetic heating coil (3). The inner wall of the protective shell (2) is connected to two first fixing plates (4). Each first fixing plate (4) is equipped with a first motor (5) on its upper surface. Each first motor (5) is connected to a metal brush (6) at its output end. The protective shell (2) is internally connected to an installation shell (7). The installation shell (7) is internally rotatably connected to a threaded rod (8). The outer surface of the threaded rod (8) is threadedly connected to a slider (9). The bottom surface of the slider (9) is connected to a scraper (10). The bottom surface of the scraper (10) is in contact with the upper surface of the support frame (1). The outer surface of the protective shell (2) is connected to a second fixing plate (11). The outer surface of the second fixing plate (11) is connected to a second motor (12). The output end of the second motor (12) passes through the protective shell (2) and is connected to the front end of the threaded rod (8).

2. The heat treatment apparatus for steel production according to claim 1, characterized in that, The bottom surface of the support frame (1) is connected to two support plates (13). Each support plate (13) has a dust collection box (14) installed on its upper surface. Each dust collection box (14) has a dust collection pipe (15) connected to its input end. The outer surface of the support frame (1) is connected to two first diversion pipes (16). The end of each dust collection pipe (15) away from the dust collection box (14) is connected to the outer surface of the first diversion pipe (16). The outer surface of each first diversion pipe (16) is connected to two connecting pipes (17). The end of each connecting pipe (17) away from the first diversion pipe (16) is connected to a dust collection head (18). The outer surface of each dust collection head (18) extends through the protective shell (2) and into the interior of the protective shell (2).

3. The heat treatment apparatus for steel production according to claim 1, characterized in that, The protective shell (2) is provided with a first support frame (19) on both the left and right sides. The bottom surface of each first support frame (19) is connected to the upper surface of the bearing frame (1). Two first rotating rods (20) are rotatably connected inside each first support frame (19). A first limiting wheel (21) is connected to the outer surface of each first rotating rod (20). A third fixing plate (22) is connected to the outer surface of each first support frame (19). A third motor (23) is connected to the upper surface of each third fixing plate (22). The output end of each third motor (23) is connected to the front end of one of the first rotating rods (20).

4. The heat treatment apparatus for steel production according to claim 1, characterized in that, The bottom surface of the support frame (1) is connected to a bracket (28), the upper surface of the bracket (28) is connected to a coolant tank (27), the outer surface of the coolant tank (27) extends through the support frame (1) to the top of the support frame (1), and a filter box (34) is installed on the upper surface of the support frame (1).

5. A heat treatment apparatus for steel production according to claim 4, characterized in that, The upper surface of the coolant tank (27) is connected to two first connecting brackets (29), and the two first connecting brackets (29) are connected to a splash guard (30) on the side that is close to each other. The inner wall of the splash guard (30) is connected to two sets of nozzles (31).

6. The heat treatment apparatus for steel production according to claim 4, characterized in that, A liquid pump (32) is installed on the inner bottom wall of the coolant tank (27). The output end of the liquid pump (32) is connected to a liquid delivery pipe (33). The end of the liquid delivery pipe (33) away from the liquid pump (32) is connected to the input end of the filter box (34).

7. A heat treatment apparatus for steel production according to claim 4, characterized in that, The output end of the filter box (34) is connected to a connecting pipe (35). The end of the connecting pipe (35) away from the filter box (34) is connected to a second diverter pipe (36). The outer surface of the second diverter pipe (36) is connected to two sets of liquid delivery pipes (37). The end of each set of liquid delivery pipes (37) away from the second diverter pipe (36) passes through the splash guard (30) and is connected to the outer surface of the corresponding nozzle (31).

8. A heat treatment apparatus for steel production according to claim 5, characterized in that, Each of the first connecting brackets (29) has a second connecting bracket (38) connected to its upper surface. The two second connecting brackets (38) are connected to a round tube (39) on their sides that are close to each other. The inner wall of the round tube (39) is connected to a mounting bracket (40). The upper surface of the mounting bracket (40) has a smoke extractor (41). The top end of the round tube (39) is connected to a connecting valve (42).

9. A heat treatment apparatus for steel production according to claim 4, characterized in that, The filter box (34) has two sets of sliding grooves (43) inside, and a filter plate (44) is slidably connected inside each set of sliding grooves (43). The upper surface of the filter box (34) is provided with a raised ring (45). The upper surface of the filter box (34) is movably connected with a top cover (46). The bottom surface of the top cover (46) is provided with a groove (47) that matches the raised ring (45). The bottom surface of the top cover (46) is provided with a reserved groove (48) that matches the filter plate (44).

10. A heat treatment apparatus for steel production according to claim 1, characterized in that, The upper surface of the support frame (1) is connected to a second support frame (24), and the interior of the second support frame (24) is rotatably connected to two second rotating rods (25). The outer surface of each second rotating rod (25) is connected to a second limiting wheel (26), and a control box (49) is installed on the upper surface of the support frame (1).

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