Low carbon steel deoxidizing alloying converter feeding structure

Abstract

The utility model discloses a low carbon steel deoxidization alloying converter feeding structure relates to feeding structure technical field, the utility model discloses a bin subassembly, the top fixed connection of bin subassembly has rotating subassembly, one side fixed connection of rotating subassembly has spiral feeder. The utility model classifies the storage of different types deoxidizer through strong deoxidizer bin and weak deoxidizer bin, avoids the attenuation of deoxidization effect caused by mixing, and the connecting plate ensures the stable assembly of two bins, the stirring rod in the bin rotates under the drive of driving motor, driving cone gear and driven cone gear, and the deoxidizer agglomerate can be scattered by stirring vane, prevents the blockage of bin bottom, guarantees the smooth discharge, and the weight of deoxidizer in the receiving box is accurately weighed by the bottom weighing device, and the orderly start and stop of solenoid valve one and two are combined, realizes quantitative feeding, avoids the steel water to appear bubble, hot brittle and other defects because of the dosage deviation of deoxidizer, improves the mechanical property of casting blank, reduces the risk of ladle change accident, and guarantees the stable steelmaking process.

Description

Technical Field

[0001] This utility model belongs to the field of feeding structure technology, and in particular relates to a feeding structure for a low-carbon steel deoxidation alloying converter. Background Technology

[0002] Oxygen's solubility in solid steel is much lower than in liquid steel. When deoxidation of molten steel is inadequate, FeO precipitates at the grain boundaries during solidification, reducing the steel's plasticity and mechanical properties. The FeO also reacts with FeS to form low-melting-point eutectics, distributed along the grain boundaries, causing "hot brittleness" during steel heating and rolling. Simultaneously, during solidification, C and O continue to react, sometimes violently, leading to "tundish flipping" accidents during casting. This is because the solubility of oxygen in molten steel gradually decreases during solidification, causing oxygen to precipitate and react with C in the steel to form CO bubbles. When the carbon-oxygen reaction is too intense, it can easily cause severe "tundish flipping" accidents, and the produced steel billets will exhibit bubble defects. Therefore, deoxidation of molten steel is necessary.

[0003] Deoxidation and alloying are among the five major processes in converter steelmaking, playing a crucial role in the entire process. They not only affect the smooth operation of the steelmaking process but also the final product quality and steelmaking costs. Deoxidation and alloying are the final steps in the smelting process, and under normal circumstances, deoxidation and alloying are performed simultaneously. Improper operation can negatively impact alloy recovery rates, increase refining difficulties, increase inclusions in molten steel, and worsen castability, affecting billet quality. In severe cases, it can lead to scrap or even casting machine interruptions. Therefore, improving the control level of the deoxidation and alloying process is a critical aspect of steelmaking. To address these issues, we provide a low-carbon steel deoxidation and alloying converter charging structure. Utility Model Content

[0004] The purpose of this invention is to provide a charging structure for a low-carbon steel deoxidation alloying converter. By cooperating with the hopper assembly and the rotating assembly, the problem that the charging structure in the prior art cannot achieve automated charging is solved.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0006] This utility model relates to a charging structure for a low-carbon steel deoxidation alloying converter, comprising a hopper assembly. A rotating component is fixedly connected to the top of the hopper assembly, and a screw feeder is fixedly connected to one side of the rotating component. The hopper assembly includes a strong deoxidizer hopper and a weak deoxidizer hopper, with a connecting plate fixedly connected between them. Both the strong and weak deoxidizer hoppers have stirring rods inside their cavities. A driven bevel gear is fixedly connected to the top of each stirring rod, and a driving bevel gear meshes with the surface of the driven bevel gear. A drive motor is fixedly connected to the surface of the driving bevel gear. The strong deoxidizer hopper… Solenoid valve one is fixedly connected to the bottom of both the strong and weak deoxidizer chambers. Weighing devices are fixedly connected to the bottom of the surfaces of both the strong and weak deoxidizer chambers. A receiving box is placed inside the weighing device. The bottom of solenoid valve one extends through the inner cavity of the receiving box. Solenoid valve two is fixedly connected to the bottom of the receiving box. The rotating assembly includes a coupling fixedly connected to the top of the connecting plate. A servo motor is fixedly connected to the top of the coupling. A support frame is fixedly connected to the top of the servo motor. A hydraulic telescopic rod one is fixedly connected to one side of the support frame. The output end of the hydraulic telescopic rod one is fixedly connected to the screw feeder.

[0007] The present invention is further configured such that a slide rail is fixedly connected to the bottom of the support frame, and universal pulleys are fixedly connected to the relatively far sides of the strong deoxidizer chamber and the weak deoxidizer chamber. The bottom of the universal pulley contacts the top of the slide rail, and the slide rail and the universal pulley cooperate. The universal pulley rolls along the slide rail, providing auxiliary support for the rotation of the support frame, reducing frictional resistance, avoiding the support frame from tilting due to force on one side, improving rotational stability, ensuring the accuracy of weighing and discharging, and extending the service life of the structure.

[0008] The present invention is further configured such that a feeding pipe is connected to one side of the top of both the strong deoxidizer chamber and the weak deoxidizer chamber. A cover plate is movably connected to the top of the feeding pipe via a pin, and a hydraulic telescopic rod II is movably connected to one side of the bottom of the cover plate via a pin. The other end of the hydraulic telescopic rod II is movably connected to the feeding pipe via a pin. The feeding pipe facilitates the replenishment of deoxidizer into the chamber. The cover plate closes the pipe opening when not replenishing, preventing dust and impurities from contaminating the deoxidizer. The hydraulic telescopic rod II drives the cover plate to open and close automatically, eliminating the need for manual operation, reducing labor intensity, automating the replenishment process, improving replenishment efficiency, and preventing impurities from affecting the deoxidation effect.

[0009] The present invention is further configured such that a spiral discharge roller is fixedly connected to the bottom of the stirring rod. The spiral discharge roller at the bottom of the stirring rod rotates with the stirring rod and can push the deoxidizer to the discharge port, further preventing the bottom of the bin from accumulating and clogging. It is especially suitable for deoxidizers that are prone to agglomeration, ensuring the continuity of discharge, avoiding interruption of feeding, and maintaining the stability of the deoxidation and alloying process.

[0010] The present invention is further configured such that an opening is provided on one side of the top of the support frame, and the discharge pipe of the screw feeder extends into the inner cavity of the opening. The opening provides displacement space for the discharge pipe of the screw feeder, ensuring that the discharge pipe is accurately connected to the replenishment pipe.

[0011] The present invention is further configured such that a limiting ring is fitted on the surface of the screw feeder, one side of which is fixedly connected to the support frame. The limiting ring is fixed to the support frame to restrict the shaking of the equipment, especially when the screw feeder is running at high speed, to prevent displacement of the screw feeder, to ensure the docking accuracy with the receiving box and converter, to reduce material leakage, and to extend the service life of the equipment.

[0012] The present invention is further configured such that a receiving plate is fixedly connected to the top of the screw feeder, and the top of the first hydraulic telescopic rod is fixedly connected to the bottom of the connecting plate. The connecting plate increases the connection area with the first hydraulic telescopic rod, so that the force is transmitted evenly, avoids local deformation of the equipment, improves the stability of position adjustment, and ensures that the screw feeder moves accurately to the target position.

[0013] The present invention is further configured such that a feeding box is connected to the bottom of one side of the screw feeder, which facilitates the feeding operation.

[0014] The present invention has the following beneficial effects.

[0015] 1. This utility model separates and stores different types of deoxidizers in strong and weak deoxidizer bins to avoid mixing and thus reduce the deoxidation effect. The connecting plate ensures stable assembly of the two bins. The stirring rod inside the bin rotates under the drive of the motor, the active bevel gear and the driven bevel gear. The stirring blades can break up deoxidizer clumps, prevent blockage at the bottom of the bin, and ensure smooth discharge. The bottom weigher accurately weighs the deoxidizer in the receiving box. Combined with the orderly start and stop of the first and second solenoid valves, quantitative dispensing is achieved, avoiding defects such as bubbles and hot brittleness in molten steel due to deoxidizer dosage deviation. This improves the mechanical properties of the billet, reduces the risk of ladle overturning accidents, and ensures the stability of the steelmaking process.

[0016] 2. The servo motor of this utility model drives the entire hopper assembly to rotate through the coupling, which can adjust the feeding direction. The hydraulic telescopic rod on the support frame can push the screw feeder to move horizontally and accurately connect with the feeding pipe. The screw feeder can add raw materials smoothly, avoiding the spillage problem of traditional feeding, ensuring continuous feeding, reducing production delays, adapting to the needs of different steelmaking scenarios, improving the overall efficiency of converter steelmaking, and reducing the cost of manual intervention. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0018] Figure 1This is a three-dimensional view of the charging structure of a low-carbon steel deoxidation and alloying converter.

[0019] Figure 2 This is a bottom view schematic diagram of the charging structure of a low-carbon steel deoxidation alloying converter.

[0020] Figure 3 This is a three-dimensional schematic diagram of a strong deoxidizer silo in the charging structure of a low-carbon steel deoxidation alloying converter.

[0021] Figure 4 This is a cross-sectional schematic diagram of a strong deoxidizer compartment in the charging structure of a low-carbon steel deoxidation alloying converter.

[0022] Figure 5 This is a schematic diagram of the connection structure between the feeding pipe and the cover plate in the charging structure of a low-carbon steel deoxidation and alloying converter.

[0023] In the attached diagram: 1. Silo assembly; 11. Strong deoxidizer silo; 12. Weak deoxidizer silo; 13. Connecting plate; 14. Agitator rod; 15. Driven bevel gear; 16. Driven bevel gear; 17. Drive motor; 18. Solenoid valve one; 19. Weighing device; 110. Receiving box; 111. Solenoid valve two; 112. Universal pulley; 113. Feeding pipe; 114. Cover plate; 115. Hydraulic telescopic rod two; 2. Rotating assembly; 21. Coupling; 22. Servo motor; 23. Support frame; 24. Hydraulic telescopic rod one; 25. Slide rail; 3. Screw feeder. Detailed Implementation

[0024] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Example 1

[0026] Please see Figure 1-5This utility model relates to a charging structure for a low-carbon steel deoxidation alloying converter, comprising a hopper assembly 1, a rotating assembly 2 fixedly connected to the top of the hopper assembly 1, and a screw feeder 3 fixedly connected to one side of the rotating assembly 2. The hopper assembly 1 includes a strong deoxidizer hopper 11 and a weak deoxidizer hopper 12, with a connecting plate 13 fixedly connected between the strong deoxidizer hopper 11 and the weak deoxidizer hopper 12. A stirring rod 14 is provided inside the cavities of both the strong deoxidizer hopper 11 and the weak deoxidizer hopper 12. A driven bevel gear 15 is fixedly connected to the top of the stirring rod 14, and a driving bevel gear 16 meshes with the surface of the driven bevel gear 15. A drive motor 17 is fixedly connected to the surface of the driving bevel gear 16. Solenoid valve 18 is fixedly connected to the bottom of each deoxidizer hopper 12. Weighing devices 19 are fixedly connected to the bottom of the surfaces of both the strong deoxidizer hopper 11 and the weak deoxidizer hopper 12. A receiving box 110 is placed inside the weighing device 19. The bottom of solenoid valve 18 extends through the inner cavity of the receiving box 110. Solenoid valve 111 is fixedly connected to the bottom of the receiving box 110. The rotating assembly 2 includes a coupling 21 fixedly connected to the top of the connecting plate 13. A servo motor 22 is fixedly connected to the top of the coupling 21. A support frame 23 is fixedly connected to the top of the servo motor 22. A hydraulic telescopic rod 24 is fixedly connected to one side of the support frame 23. The output end of the hydraulic telescopic rod 24 is fixedly connected to the screw feeder 3.

[0027] Specifically: By adding deoxidizers in a strong→weak→strong manner, the yield of Si and Mn elements is improved and stabilized, reducing alloy consumption. Furthermore, a multi-hole bottom-blowing argon technology is employed in the ladle, optimizing the layout and pore size design of the permeable bricks to create a uniform circulating and stirring effect of argon gas within the ladle. This multi-hole bottom-blowing argon technology uses an automatic gas flow control system to dynamically adjust the argon flow rate based on the weight of the molten steel, processing time, and argon blowing stage, ensuring that inclusions are fully discharged. Simultaneously, the surface fluctuations of the molten steel are monitored in real time during the argon blowing process to prevent splashing and gas absorption due to excessive argon flow, thus promoting the floating of large inclusions in the steel and improving the cleanliness of the molten steel.

[0028] Example 2

[0029] Please see Figure 1-5Based on Embodiment 1, a slide rail 25 is fixedly connected to the bottom of the support frame 23. Universal pulleys 112 are fixedly connected to the relatively distant sides of the strong deoxidizer chamber 11 and the weak deoxidizer chamber 12. The bottom of the universal pulleys 112 contacts the top of the slide rail 25. A feeding pipe 113 is connected to one side of the top of both the strong deoxidizer chamber 11 and the weak deoxidizer chamber 12. A cover plate 114 is movably connected to the top of the feeding pipe 113 via a pin. A hydraulic telescopic rod 115 is movably connected to one side of the bottom of the cover plate 114 via a pin. The other end of the retractable rod 115 is movably connected to the feeding pipe 113 via a pin. The bottom of the stirring rod 14 is fixedly connected to a spiral discharge roller. An opening is provided on one side of the top of the support frame 23. The discharge pipe of the spiral feeder 3 extends into the inner cavity of the opening. A limiting ring is fitted on the surface of the spiral feeder 3. One side of the limiting ring is fixedly connected to the support frame 23. A receiving plate is fixedly connected to the top of the spiral feeder 3. The top of the hydraulic telescopic rod 24 is fixedly connected to the bottom of the connecting plate 13. A feeding box is connected to the bottom of one side of the spiral feeder 3.

[0030] Specifically: The slide rail 25 cooperates with the universal pulley 112, which rolls along the slide rail 25 to provide auxiliary support for the rotation of the support frame 23, reduce frictional resistance, prevent the support frame 23 from tilting due to unilateral force, improve rotational stability, ensure the accuracy of weighing and discharging, and extend the service life of the structure. The feeding pipe 113 facilitates the replenishment of deoxidizer into the silo. The cover plate 114 closes the pipe opening when not replenishing to prevent dust and impurities from contaminating the deoxidizer. The hydraulic telescopic rod 115 drives the cover plate 114 to open and close automatically without manual operation, reducing labor intensity, realizing automated feeding, improving feeding efficiency, and preventing impurities from affecting the deoxidation effect. The spiral discharge roller at the bottom of the stirring rod 14 rotates with the stirring rod 14 and can push the deoxidizer to the discharge port. To further prevent bottom blockage and accumulation, especially suitable for deoxidizers that are prone to agglomeration, ensuring continuous discharge, avoiding interruption of feeding, and maintaining the stability of the deoxidation and alloying process, the opening provides displacement space for the discharge pipe of the screw feeder 3, ensuring accurate docking of the discharge pipe with the feeding pipe 113. The limiting ring is fixed to the support frame 23 to limit equipment shaking, especially during high-speed operation, to prevent displacement of the screw feeder 3, ensuring docking accuracy with the receiving box 110 and the converter, reducing material leakage, and extending equipment life. The connecting plate 13 increases the connection area with the hydraulic telescopic rod 24, so that the force is transmitted evenly, avoiding local deformation of the equipment, improving the stability of position adjustment, and ensuring that the screw feeder 3 moves accurately to the target position. The feeding box facilitates the feeding operation.

[0031] The working principle of this utility model is as follows: First, the cover plate 114 is driven by the hydraulic telescopic rod 115 to open the feeding pipe 113. Then, the hydraulic telescopic rod 24 retracts to drive the screw feeder 3 to move downward, so that its discharge pipe is aligned with the corresponding feeding pipe, thereby replenishing the corresponding deoxidizer to the strong deoxidizer bin 11 and the weak deoxidizer bin 12. After replenishment, the hydraulic telescopic rod 115 retracts to drive the cover plate 114 to close. When adding material, the drive motor 17 is started, which drives the active bevel gear 16, the driven bevel gear 15 and the stirring rod 14 to rotate, stirring the deoxidizer in the bin. The solenoid valve 18 is opened, and the deoxidizer falls into the receiving box 110. After the weighing device 19 reaches the standard, the solenoid valve 18 is closed. Then, the servo motor 22 drives the bin assembly 1 to rotate through the coupling 21. The universal pulley 112 rolls along the slide rail 25 to assist in stabilization. The solenoid valve 111 is opened to transport the corresponding deoxidizer to the converter. If another deoxidizer needs to be added, the corresponding bin operation is repeated.

[0032] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. A charging structure for a low-carbon steel deoxidation alloying converter, comprising a hopper assembly (1), characterized in that: The top of the hopper assembly (1) is fixedly connected to a rotating assembly (2), and a screw feeder (3) is fixedly connected to one side of the rotating assembly (2). The silo assembly (1) includes a strong deoxidizer silo (11) and a weak deoxidizer silo (12). A connecting plate (13) is fixedly connected between the strong deoxidizer silo (11) and the weak deoxidizer silo (12). A stirring rod (14) is provided in the inner cavity of both the strong deoxidizer silo (11) and the weak deoxidizer silo (12). A driven bevel gear (15) is fixedly connected to the top of the stirring rod (14). A driving bevel gear (16) meshes with the surface of the driven bevel gear (15). The surface of the driving bevel gear (16) is fixedly connected to the driving bevel gear (16). A drive motor (17) is fixedly connected to the bottom of the strong deoxidizer chamber (11) and the weak deoxidizer chamber (12). A solenoid valve (18) is fixedly connected to the bottom of the surface of the strong deoxidizer chamber (11) and the weak deoxidizer chamber (12). A weighing device (19) is fixedly connected to the bottom of the surface of the strong deoxidizer chamber (11) and the weak deoxidizer chamber (12). A receiving box (110) is placed in the inner cavity of the weighing device (19). The bottom of the solenoid valve (18) extends through the inner cavity of the receiving box (110). A solenoid valve (111) is fixedly connected to the bottom of the receiving box (110). The rotating assembly (2) includes a coupling (21) fixedly connected to the top of the connecting plate (13). A servo motor (22) is fixedly connected to the top of the coupling (21). A support frame (23) is fixedly connected to the top of the servo motor (22). A hydraulic telescopic rod (24) is fixedly connected to one side of the support frame (23). The output end of the hydraulic telescopic rod (24) is fixedly connected to the screw feeder (3).

2. The charging structure for a low-carbon steel deoxidation alloying converter according to claim 1, characterized in that: The bottom of the support frame (23) is fixedly connected to a slide rail (25), and the strong deoxidizer chamber (11) and the weak deoxidizer chamber (12) are both fixedly connected to universal pulleys (112) on the relatively far sides, with the bottom of the universal pulleys (112) in contact with the top of the slide rail (25).

3. The charging structure for a low-carbon steel deoxidation alloying converter according to claim 1, characterized in that: The top of both the strong deoxidizer chamber (11) and the weak deoxidizer chamber (12) is connected to a feeding pipe (113). The top of the feeding pipe (113) is movably connected to a cover plate (114) via a pin. The bottom of the cover plate (114) is movably connected to a hydraulic telescopic rod (115) via a pin. The other end of the hydraulic telescopic rod (115) is movably connected to the feeding pipe (113) via a pin.

4. The charging structure for a low-carbon steel deoxidation alloying converter according to claim 1, characterized in that: The bottom of the stirring rod (14) is fixedly connected to a spiral discharge roller.

5. The charging structure for a low-carbon steel deoxidation alloying converter according to claim 1, characterized in that: An opening is provided on one side of the top of the support frame (23), and the discharge pipe of the screw feeder (3) extends into the inner cavity of the opening.

6. The charging structure for a low-carbon steel deoxidation alloying converter according to claim 1, characterized in that: The surface of the spiral feeder (3) is fitted with a limiting ring, and one side of the limiting ring is fixedly connected to the support frame (23).

7. The charging structure for a low-carbon steel deoxidation alloying converter according to claim 1, characterized in that: The top of the spiral feeder (3) is fixedly connected to a receiving plate, and the top of the hydraulic telescopic rod (24) is fixedly connected to the bottom of the connecting plate (13).

8. The charging structure for a low-carbon steel deoxidation alloying converter according to claim 1, characterized in that: The bottom of one side of the spiral feeder (3) is connected to a feed box.

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