KR stirring head adaptive to small-volume round-bottom hot-metal bottle

Abstract

The utility model relates to the technical field of metal smelting, and discloses a KR stirring head adaptive to a small-volume round-bottom molten iron tank, which comprises a base, a stirring mechanism is mounted in the middle of the top wall of the base and used for stirring molten iron, and 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; and the stirring tank is fixedly connected to the middle part of the top wall of the base. The first gear and the second gear are in meshed connection, 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 blades, 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 blades to stir molten iron, and the stirring blades are effectively matched with a stirring tank in size. The stirring desulfurization dynamics is improved, the stirring erosion at the bottom of the stirring tank is effectively reduced, and the service life of the stirring tank is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of metal smelting technology, and in particular to a KR stirring head adapted to a small-capacity round-bottom molten iron ladle. Background Technology

[0002] KR molten iron refers to molten iron treated by the KR method, a molten iron desulfurization technology. The KR method has high desulfurization efficiency and can reduce the sulfur content of molten iron to a low level, which can meet the production requirements of low-sulfur steel and is conducive to the stable operation of subsequent steelmaking processes.

[0003] The KR stirring head is the main process component of the KR desulfurization process. It is made by prefabricating a layer of refractory castable on the outside of a steel structure frame, casting and heat treatment, and using it in conjunction with the desulfurization stirring machinery. It generally includes a main body, flange parts and stirring bottom.

[0004] In existing technologies, the KR stirring head is a key and essential component for KR molten iron pretreatment. It is installed on the stirring system and agitates the molten iron through mechanical operation. During desulfurization, the stirring head is immersed to a certain depth in the molten iron. By controlling the stirring system, the stirring head generates stirring kinetic energy, which causes the molten iron in the ladle to form a vortex to disperse the desulfurizing agent. The desulfurizing agent reacts with the molten iron at the solid-liquid interface. During the desulfurization process, the immersion and stirring of the stirring head increase the contact area between the molten iron and the air, accelerate heat dissipation, and the desulfurization reaction is endothermic, causing the temperature of the molten iron to drop rapidly, affecting subsequent steelmaking processes. Insulation design for the molten iron ladle is implemented, such as increasing the thickness of the insulation layer and using new insulation materials to reduce heat loss. However, due to the large stirring size and high stirring torque of the molten iron ladle, molten iron may overflow during high-speed stirring. Maintaining low-speed stirring for desulfurization is not conducive to improving the kinetics of the desulfurization reaction. At the same time, the molten iron ladle has a circular bottom, and when the stirring head is inserted to a greater depth, the erosion rate of the bottom of the molten iron ladle is faster, reducing the service life of the molten iron ladle. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a KR stirring head adapted to a small-capacity round-bottom molten iron ladle. It aims to improve the existing technology where the stirring torque is high, molten iron overflows during high-speed stirring, and maintaining low-speed stirring for desulfurization is not conducive to improving the kinetics of the desulfurization reaction. At the same time, the molten iron ladle has a round bottom, and when the stirring head is inserted to a greater depth, the erosion rate of the bottom of the molten iron ladle is faster, which reduces the service life of the molten iron ladle.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a KR stirring head adapted to a small-capacity round-bottom molten iron ladle, comprising a base, a stirring mechanism installed in the middle of the top wall of the base, the stirring mechanism being used to stir molten iron, a fixing mechanism being provided on the inner bottom of the stirring mechanism, the fixing mechanism being used to fix the equipment; the stirring mechanism includes a stirring tank, the stirring tank being fixedly connected to the middle of the top wall of the base, a support frame being fixedly connected to the top of the stirring tank, and a driving component being installed on the top of the support frame.

[0007] As a further description of the above technical solution:

[0008] The drive assembly includes a housing, which is fixedly connected to the inner middle of the support frame. A motor is fixedly connected to the front side of the top wall of the housing. A gear one is fixedly connected to the output end of the motor. The gear one is rotatably connected to the front side of the inner wall of the housing. A gear two is rotatably connected to the rear side of the inner wall of the housing. The gear one and gear two are meshed together.

[0009] As a further description of the above technical solution:

[0010] The bottom end of the second gear is fixedly connected to a stirring shaft, and the bottom end of the stirring shaft is fixedly connected to a stirring blade. The top wall of the stirring blade has multiple mounting grooves at equal intervals.

[0011] As a further description of the above technical solution:

[0012] The fixing mechanism includes a second fixing block, which is slidably connected to the inner wall of the mounting groove, and a first fixing block is installed on the rear side of the second fixing block.

[0013] As a further description of the above technical solution:

[0014] The front center of the fixing block has an insertion hole, and an installation component is installed inside the insertion hole.

[0015] As a further description of the above technical solution:

[0016] The mounting assembly includes a bolt, which is threadedly connected to the inner wall of the insertion hole and the fixing block 2. The outer wall of the bolt has a positioning hole, and the inner wall of the positioning hole is threadedly connected to a fixing bolt.

[0017] As a further description of the above technical solution:

[0018] An installation block is installed on the upper front part of the outer wall of the mixing tank, and an operation button is installed on the middle front part of the installation block.

[0019] As a further description of the above technical solution:

[0020] A discharge pipe is connected to the lower right side of the outer wall of the mixing tank, and a valve is installed at the top of the discharge pipe.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, gear one and gear two are meshed and connected. A stirring shaft is fixedly connected to the bottom end of gear two, and a stirring blade is fixedly connected to the bottom end of the stirring shaft. The rotation of the motor drives gear one to rotate, gear one drives gear two to rotate, and gear two then drives the stirring shaft and stirring blade to stir the molten iron. The stirring blade effectively matches the size of the stirring tank, increases the stirring speed, improves the stirring desulfurization kinetics, effectively reduces the stirring erosion at the bottom of the stirring tank, and increases the service life of the stirring tank.

[0023] 2. In this utility model, the second fixing block is inserted into the mounting groove, the first fixing block is fixed together with the stirring shaft, and then the bolt is screwed into the insertion hole of the first fixing block from the hole in the middle of the second fixing block. The bolt is threaded to the insertion hole and the inner wall of the second fixing block. The outer wall of the bolt is provided with a positioning hole. Finally, the fixing bolt is inserted into the positioning hole to form a stable connection. No complicated operation is required, the operation is convenient and it is not easy to loosen. Attached Figure Description

[0024] Figure 1 A perspective view of a KR stirring head adapted to a small-capacity round-bottom molten iron ladle proposed in this utility model;

[0025] Figure 2 This is a front view of a KR stirring head adapted to a small-capacity round-bottom molten iron ladle, as proposed in this utility model.

[0026] Figure 3 This is a partial structural diagram of a KR stirring head adapted to a small-capacity round-bottom molten iron ladle, as proposed in this utility model.

[0027] Figure 4 This is a schematic diagram of the fixing mechanism of the KR stirring head adapted to a small-capacity round-bottom molten iron ladle proposed in this utility model.

[0028] Figure 5 This is a partial structural exploded view of a KR stirring head adapted to a small-capacity round-bottom molten iron ladle, as proposed in this utility model.

[0029] Legend:

[0030] 1. Base; 2. Stirring mechanism; 201. Stirring tank; 202. Support frame; 203. Drive assembly; 2031. Motor; 2032. Housing; 2033. Gear 1; 2034. Gear 2; 204. Stirring shaft; 205. Stirring blade; 206. Mounting groove; 3. Fixing mechanism; 301. Fixing block 1; 302. Fixing block 2; 303. Mounting assembly; 3031. Bolt; 3032. Fixing bolt; 3033. Positioning hole; 304. Insertion hole; 4. Mounting block; 5. Operation button; 6. Valve; 7. Discharge pipe. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figure 1 , Figure 2 and Figure 3This utility model provides an embodiment of a KR stirring head adapted to a small-capacity round-bottom molten iron ladle, comprising a base 1, a stirring mechanism 2 installed in the middle of the top wall of the base 1, the stirring mechanism 2 being used to stir molten iron, and a fixing mechanism 3 provided at the bottom inner side of the stirring mechanism 2 for fixing the equipment; the stirring mechanism 2 includes a stirring tank 201, the stirring tank 201 being fixedly connected to the middle of the top wall of the base 1, a support frame 202 being fixedly connected to the top of the stirring tank 201, a drive assembly 203 being installed on the top of the support frame 202, the drive assembly 203 including a housing 2032, the housing 2032 being fixedly connected to the middle inner side of the support frame 202, a motor 2031 being fixedly connected to the front side of the top wall of the housing 2032, a gear 2033 being fixedly connected to the output end of the motor 2031, the gear 2033 being rotatably connected to the front side of the inner wall of the housing 2032, and a gear 2033 being rotatably connected to the rear side of the inner wall of the housing 2032. Gear 2034, Gear 1, and Gear 2034 are meshed together. The bottom end of Gear 2034 is fixedly connected to a stirring shaft 204, and the bottom end of the stirring shaft 204 is fixedly connected to a stirring blade 205. When the motor 2031 starts and rotates, it first drives Gear 1 2033 to rotate. Gear 1 2033 then transmits power to Gear 2 2034, causing Gear 2 2034 to also start rotating. This transmission mechanism ensures that the stirring shaft 204 and stirring blade 205 can efficiently stir the molten iron. The design of stirring blade 205 matches the internal dimensions of the stirring tank 201, which not only increases the stirring speed but also enhances the desulfurization kinetic effect during the stirring process. In addition, this design effectively reduces the stirring erosion at the bottom of the stirring tank 201, thereby significantly improving the overall service life of the stirring tank 201. The top wall of stirring blade 205 has multiple mounting slots 206 at equal intervals.

[0033] Specifically, gear 1 2033 and gear 2 2034 are meshed together. The bottom end of gear 2 2034 is fixedly connected to a stirring shaft 204, and the bottom end of the stirring shaft 204 is fixedly connected to a stirring blade 205. The rotation of motor 2031 drives gear 1 2033 to rotate, which in turn drives gear 2 2034 to rotate. Gear 2 2034 then drives the stirring shaft 204 and stirring blade 205 to stir the molten iron. The stirring blade 205 effectively matches the size of the stirring tank 201, increases the stirring speed, improves the stirring desulfurization kinetics, effectively reduces the stirring erosion at the bottom of the stirring tank 201, and increases the service life of the stirring tank 201.

[0034] Reference Figure 3 , Figure 4 and Figure 5The fixing mechanism 3 includes a second fixing block 302, which is slidably connected to the inner wall of the mounting groove 206. A first fixing block 301 is installed on the rear side of the second fixing block 302. An insertion hole 304 is provided in the middle of the front side of the first fixing block 301. An installation component 303 is installed on the inner side of the insertion hole 304. The installation component 303 includes a bolt 3031, which is threadedly connected to the inner wall of the insertion hole 304 and the second fixing block 302. A positioning hole 3033 is provided on the outer wall of the bolt 3031, and a fixing bolt 3032 is threadedly connected to the inner wall of the positioning hole 3033. The second fixing block 302 is inserted into the mounting groove 206, and then the first fixing block 301 and the agitator are connected together. The mixing shafts 204 are firmly fixed together. Then, the bolts 3031 are screwed into the insertion holes 304 of the fixing block 301 through the hole in the middle of the fixing block 2 302, so as to achieve a tight connection between the two. The threaded part of the bolt 3031 is tightly threadedly connected to the insertion hole 304 and the inner wall of the fixing block 2 302, ensuring the stability of the connection. In order to further prevent loosening, a positioning hole 3033 is specially opened on the outer wall of the bolt 3031. Finally, the fixing bolt 3032 is inserted into the positioning hole 3033, thus forming a stable and non-loose connection structure. This design not only simplifies the installation process, but also makes the operation convenient due to its simple structure.

[0035] Specifically, the second fixing block 302 is inserted into the mounting groove 206, the first fixing block 301 is fixed together with the stirring shaft 204, and the bolt 3031 is screwed into the insertion hole 304 of the first fixing block 301 through the hole in the middle of the second fixing block 302. The bolt 3031 is threadedly connected to the inner wall of the insertion hole 304 and the second fixing block 302. The outer wall of the bolt 3031 has a positioning hole 3033. Finally, the fixing bolt 3032 is inserted into the positioning hole 3033 to form a stable connection. No complicated operation is required, the operation is convenient and not easy to loosen.

[0036] Reference Figure 1 , Figure 2 and Figure 3 An installation block 4 is installed on the upper front part of the outer wall of the mixing tank 201. An operation button 5 is installed on the middle front part of the installation block 4. A discharge pipe 7 is connected to the lower right side of the outer wall of the mixing tank 201. A valve 6 is installed on the top of the discharge pipe 7.

[0037] Specifically, in the event of an emergency, such as a fire, leak, or other safety accident, pressing the operation button 5 can quickly close the valve 6, cutting off the flow of molten iron and preventing the accident from escalating. The mixing tank 201 receives the molten iron flowing out of the blast furnace, temporarily stores it, and transports it to the steelmaking workshop and desulfurization and dephosphorization treatment stations. The discharge pipe 7 connects the mixing tank 201 to the subsequent processing equipment, transporting the molten iron from the tank to the designated location. In conjunction with the valve 6, it achieves stable discharge and emergency shut-off of molten iron.

[0038] Working principle: Gear 1 2033 and Gear 2 2034 are tightly meshed to ensure transmission accuracy. The bottom end of Gear 2 2034 is designed to be fixedly connected to the stirring shaft 204, and the bottom end of the stirring shaft 204 is fixedly connected to the stirring blade 205. When the motor 2031 starts and rotates, it first drives Gear 1 2033 to rotate. Gear 1 2033 then transmits power to Gear 2 2034, causing Gear 2 2034 to also start rotating. This transmission mechanism ensures that the stirring shaft 204 and stirring blade 205 can efficiently stir the molten iron. The design of the stirring blade 205 matches the internal dimensions of the stirring tank 201, which not only increases the stirring speed but also enhances the desulfurization kinetic effect during the stirring process. In addition, this design effectively reduces the stirring erosion at the bottom of the stirring tank 201, thereby significantly improving the overall service life of the stirring tank 201.

[0039] Insert the second fixing block 302 into the mounting groove 206, and then firmly fix the first fixing block 301 to the stirring shaft 204. Next, screw the bolt 3031 into the insertion hole 304 of the first fixing block 301 through the hole in the middle of the second fixing block 302 to achieve a tight connection between the two. The threaded part of the bolt 3031 is tightly threaded with the insertion hole 304 and the inner wall of the second fixing block 302 to ensure the stability of the connection. In order to further prevent loosening, a positioning hole 3033 is specially opened on the outer wall of the bolt 3031. Finally, insert the fixing bolt 3032 into the positioning hole 3033 to form a stable and non-loose connection structure. This design not only simplifies the installation process, but also reduces the time and labor intensity required for installation and maintenance due to its simple structure and convenient operation.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A KR stirring head adapted to a small-capacity round-bottom molten iron ladle, comprising a base (1), characterized in that: A stirring mechanism (2) is installed in the middle of the top wall of the base (1). The stirring mechanism (2) is used to stir molten iron. A fixing mechanism (3) is provided on the bottom inner side of the stirring mechanism (2). The fixing mechanism (3) is used to fix the equipment. The stirring mechanism (2) includes a stirring tank (201), which is fixedly connected to the middle of the top wall of the base (1). A support frame (202) is fixedly connected to the top of the stirring tank (201), and a drive assembly (203) is installed on the top of the support frame (202).

2. The KR stirring head adapted to a small-capacity round-bottom molten iron ladle according to claim 1, characterized in that: The drive assembly (203) includes a housing (2032), which is fixedly connected to the inner middle of the support frame (202). A motor (2031) is fixedly connected to the front side of the top wall of the housing (2032). A gear one (2033) is fixedly connected to the output end of the motor (2031). The gear one (2033) is rotatably connected to the front side of the inner wall of the housing (2032). A gear two (2034) is rotatably connected to the rear side of the inner wall of the housing (2032). The gear one (2033) and the gear two (2034) are meshed together.

3. The KR stirring head adapted to a small-capacity round-bottom molten iron ladle according to claim 2, characterized in that: The bottom end of the gear 2 (2034) is fixedly connected to a stirring shaft (204), and the bottom end of the stirring shaft (204) is fixedly connected to a stirring blade (205). The top wall of the stirring blade (205) has multiple mounting grooves (206) at equal intervals.

4. The KR stirring head adapted to a small-capacity round-bottom molten iron ladle according to claim 1, characterized in that: The fixing mechanism (3) includes a second fixing block (302), which is slidably connected to the inner wall of the mounting groove (206), and a first fixing block (301) is installed on the rear side of the second fixing block (302).

5. The KR stirring head adapted to a small-capacity round-bottom molten iron ladle according to claim 4, characterized in that: The fixing block 1 (301) has a socket (304) in the middle of its front side, and an installation component (303) is installed inside the socket (304).

6. The KR stirring head adapted to a small-capacity round-bottom molten iron ladle according to claim 5, characterized in that: The mounting assembly (303) includes a bolt (3031) which is threadedly connected to the inner wall of the insertion hole (304) and the fixing block two (302). The outer wall of the bolt (3031) is provided with a positioning hole (3033), and the inner wall of the positioning hole (3033) is threadedly connected with a fixing bolt (3032).

7. The KR stirring head adapted to a small-capacity round-bottom molten iron ladle according to claim 1, characterized in that: An installation block (4) is installed on the upper front part of the outer wall of the mixing tank (201), and an operation button (5) is installed on the middle front part of the installation block (4).

8. The KR stirring head adapted to a small-capacity round-bottom molten iron ladle according to claim 1, characterized in that: The lower right side of the outer wall of the mixing tank (201) is connected to a discharge pipe (7), and a valve (6) is installed on the top of the discharge pipe (7).

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