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CN-224227106-U - KR stirring head of small-volume round bottom hot-metal bottle of adaptation

CN224227106UCN 224227106 UCN224227106 UCN 224227106UCN-224227106-U

Abstract

The utility model relates to the technical field of metal smelting, and discloses a KR stirring head adapting to a small-volume round bottom hot-metal ladle, which comprises a base, wherein a stirring mechanism is arranged in the middle of the top wall of the base and used for stirring molten iron, a fixing mechanism is arranged at the bottom of the inner side of the stirring mechanism and used for fixing equipment, and the stirring mechanism comprises a stirring tank fixedly connected to the middle of the top wall of the base. According to the utility model, the first gear is in meshed connection with the second gear, the bottom end of the second gear is fixedly connected with the stirring shaft, the bottom end of the stirring shaft is fixedly connected with the stirring blade, the motor rotates to drive the first gear to rotate, the first gear drives the second gear to rotate, the second gear drives the stirring shaft and the stirring blade to stir molten iron, the stirring blade is effectively matched with the size of the stirring tank, the stirring revolution is increased, the stirring desulfurization dynamics is improved, stirring erosion at the bottom of the stirring tank is effectively reduced, and the service life of the stirring tank is prolonged.

Inventors

  • ZHU XIANYI
  • LI QUANZHI
  • HONG JUN
  • LIU DAOZHENG
  • MENG SHIDONG
  • WANG LIN
  • WEI FULONG
  • Wen Anyi
  • LAN GUINIAN
  • LIU MINGBO
  • YIN JIEPING

Assignees

  • 首钢水城钢铁（集团）有限责任公司

Dates

Publication Date
20260512
Application Date
20250605

Claims (8)

  1. 1. The KR stirring head suitable for the small-volume round-bottom hot-metal ladle comprises a base (1) and is characterized in that a stirring mechanism (2) is arranged in the middle of the top wall of the base (1), the stirring mechanism (2) is used for stirring molten iron, a fixing mechanism (3) is arranged at the bottom of the inner side of the stirring mechanism (2), and the fixing mechanism (3) is used for fixing equipment; The stirring mechanism (2) comprises a stirring tank (201), the stirring tank (201) is fixedly connected to the middle of the top wall of the base (1), a supporting frame (202) is fixedly connected to the top end of the stirring tank (201), and a driving assembly (203) is arranged at the top of the supporting frame (202).
  2. 2. The KR stirring head for a small-volume round-bottom hot-metal ladle is characterized in that the driving assembly (203) comprises a shell (2032), the shell (2032) is fixedly connected to the middle part of the inner side of the supporting frame (202), a motor (2031) is fixedly connected to the front side of the top wall of the shell (2032), a gear I (2033) is fixedly connected to the output end of the motor (2031), the gear I (2033) is rotatably connected to the front side of the inner wall of the shell (2032), a gear II (2034) is rotatably connected to the rear side of the inner wall of the shell (2032), and the gear I (2033) and the gear II (2034) are in meshed connection.
  3. 3. The KR stirring head for the small-volume round-bottom hot-metal ladle is characterized in that a stirring shaft (204) is fixedly connected to the bottom end of the gear II (2034), stirring blades (205) are fixedly connected to the bottom end of the stirring shaft (204), and a plurality of mounting grooves (206) are formed in the top wall of the stirring blades (205) at equal intervals.
  4. 4. The KR stirring head for adapting a small-volume round bottom hot-metal ladle as claimed in claim 1, wherein the fixing mechanism (3) comprises a second fixing block (302), the second fixing block (302) is slidably connected to the inner wall of the mounting groove (206), and a first fixing block (301) is mounted on the rear side of the second fixing block (302).
  5. 5. The KR stirring head for the small-volume round-bottom hot-metal ladle is characterized in that a jack (304) is formed in the middle of the front side of the first fixed block (301), and a mounting assembly (303) is mounted on the inner side of the jack (304).
  6. 6. The KR stirring head for adapting a small-volume round bottom hot-metal ladle as claimed in claim 5, wherein the mounting assembly (303) comprises a bolt (3031), the bolt (3031) is in threaded connection with the inner wall of the jack (304) and the second fixed block (302), a positioning hole (3033) is formed in the outer wall of the bolt (3031), and a fixing bolt (3032) is in threaded connection with the inner wall of the positioning hole (3033).
  7. 7. The KR stirring head for the small-volume round-bottom hot-metal ladle is characterized in that a mounting block (4) is mounted at the middle upper part of the front side of the outer wall of the stirring tank (201), and an operation button (5) is mounted in the middle of the front side of the mounting block (4).
  8. 8. The KR stirring head for the small-volume round-bottom hot-metal ladle is characterized in that a discharging pipe (7) is communicated with the middle lower part of the right side of the outer wall of the stirring tank (201), and a valve (6) is arranged at the top of the discharging pipe (7).

Description

KR stirring head of small-volume round bottom hot-metal bottle of adaptation Technical Field The utility model relates to the technical field of metal smelting, in particular to a KR stirring head adapting to a small-volume round bottom hot-metal ladle. Background The KR molten iron is molten iron treated by the KR method, the KR method is a molten iron desulfurization technology, the KR method has high desulfurization efficiency, the sulfur content of the molten iron can be reduced to a lower level, the production requirement of low-sulfur steel can be met, and the stable performance of the subsequent steelmaking process is facilitated. The KR stirring head is a main process piece for KR desulfurization, is formed by prefabricating a layer of refractory castable with a thickness outside a steel structure framework, and is formed by casting molding and heat treatment, and is matched with a desulfurization stirring mechanical device for use, and generally comprises a main body, a flange piece and a stirring bottom part. In the prior art, the KR stirring head is a key necessary spare part for KR molten iron pretreatment, the KR stirring head is arranged on a stirring system, the stirring head plays a role of stirring molten iron through mechanical operation, during desulfurization, the stirring head is immersed into molten iron to a certain depth, stirring kinetic energy is generated by controlling the stirring head driven by the stirring system, stirring is carried out to enable molten iron in a molten iron tank to form vortex dispersion desulfurizing agent, the desulfurizing agent and molten iron are subjected to desulfurization reaction at a solid-liquid interface, in the desulfurization process, the contact area of the molten iron and air is increased by immersing and stirring the stirring head, heat dissipation is accelerated, the desulfurization reaction absorbs heat, the temperature of the molten iron is rapidly reduced, the subsequent steelmaking process is influenced, the heat preservation design is carried out on the molten iron tank, such as the thickness of a heat preservation layer is increased, a novel heat preservation material is adopted, heat dissipation is reduced, but the stirring process of the molten iron tank is also provided, stirring torque is high, molten iron overflows during stirring at a high revolution, stirring desulfurization is kept at a low revolution, the kinetics of the desulfurization reaction is not facilitated, meanwhile, the molten iron tank is a round bottom, and the corrosion rate to the bottom of the molten iron tank is relatively fast when the insertion depth of the stirring head is relatively deep, and the service life of the molten iron tank is reduced. Disclosure of utility model In order to make up for the defects, the utility model provides the KR stirring head adapting to the small-volume round bottom hot-metal ladle, which aims to solve the problems that in the prior art, the stirring torque is high, molten iron overflows during stirring at high revolution, stirring desulfurization at low revolution is kept, the improvement of the kinetics of desulfurization reaction is not facilitated, meanwhile, the hot-metal ladle is a round bottom, the erosion rate to the bottom of the hot-metal ladle is higher when the insertion depth of the stirring head is deeper, and the service life of the hot-metal ladle is reduced. In order to achieve the purpose, the KR stirring head adapting to the small-volume round bottom hot-metal ladle comprises a base, wherein a stirring mechanism is arranged in the middle of the top wall of the base and used for stirring molten iron, a fixing mechanism is arranged at the bottom of the inner side of the stirring mechanism and used for fixing equipment, the stirring mechanism comprises a stirring tank, the stirring tank is fixedly connected to the middle of the top wall of the base, a supporting frame is fixedly connected to the top end of the stirring tank, and a driving assembly is arranged at the top of the supporting frame. As a further description of the above technical solution: the driving assembly comprises a shell, the shell is fixedly connected to the middle part of the inner side of the supporting frame, a motor is fixedly connected to the front side of the top wall of the shell, a first gear is fixedly connected to the output end of the motor, the first gear is rotationally connected to the front side of the inner wall of the shell, a second gear is rotationally connected to the rear side of the inner wall of the shell, and the first gear is in meshed connection with the second gear. As a further description of the above technical solution: The bottom fixedly connected with (mixing) shaft of gear two, the bottom fixedly connected with stirring leaf of (mixing) shaft, the roof equidistance of stirring leaf begins to have a plurality of mounting grooves. As a further description of the above technical solution: the fixing mechanism c