Argon blowing flow stabilizer for tundish of continuous casting machine

Abstract

The utility model discloses a continuous casting machine tundish argon blowing flow stabilizer which comprises a tundish, a first retaining wall and a second retaining wall are arranged on the inner wall of the tundish, a flow stabilizing assembly is arranged at the bottom of the tundish, and a water leakage opening is further formed in the bottom of a groove. The flow stabilizing assembly comprises a fixed seat, a leak hole is formed in the fixed seat, and a movable seat is slidably mounted in the middle of the fixed seat; one end of the movable seat is provided with a connector, and the other end is provided with an argon blowing pipe; the tail end of the argon blowing pipe is connected with a conical steady flow ring, and a plurality of openings are formed in the top of the steady flow ring. According to the tundish, the retaining wall of a specific structure is arranged in the tundish and matched with the flow stabilizing assembly, the flow and the flow speed of argon can be effectively controlled, and the problem that in traditional equipment, due to unstable airflow, the liquidity of molten steel is too large or too small is solved; the design of the conical steady flow ring is beneficial to uniform distribution of argon in molten steel, promotion of floating of inclusions, improvement of impurity removal efficiency, improvement of molten steel quality, stable airflow, reduction of risk of molten steel overflow, safety in use and avoidance of material waste.

Description

Technical Field

[0001] The utility model belongs to the technical field of argon blowing in the tundish of a continuous casting machine, and particularly relates to an argon blowing stabilizer for the tundish of a continuous casting machine. Background Art

[0002] The argon-blowing stabilizer for the tundish of a continuous casting machine is a device used to improve the efficiency of inclusion filtration during the steelmaking process. Through its specific structural design, it reduces the impact force of molten steel while promoting the floating of inclusions, thereby improving the quality of molten steel.

[0003] However, during use, it was found that the existing argon blowing stabilizer had a poor airflow stabilization effect, and the fluidity was unstable during the argon blowing process in the tundish, which could easily lead to excessive or insufficient flow during argon blowing. When the fluidity was too large, the molten steel would easily overflow, which not only caused waste but also posed a certain safety hazard to the surrounding staff. When the fluidity was too small, the debris handling effect would be unsatisfactory, thereby reducing the quality of the molten steel. Utility Model Content

[0004] Aiming at the disadvantages that the argon blowing effect of the tundish of the continuous casting machine is unstable and affects the impurity removal effect, the utility model provides an argon blowing stabilizer for the tundish of the continuous casting machine which can perform stable argon blowing operation and ensure the impurity removal effect of molten steel.

[0005] To achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A continuous casting machine tundish argon blowing stabilizer comprises a tundish, a pair of retaining walls 1 suspended in the middle of the inner wall of the tundish, two retaining walls 2 fixedly connected to the bottom of the inner wall, and flow stabilizing components symmetrically arranged on the left and right sides of the bottom, wherein the retaining walls 2 cooperate with the inner wall to form a groove, and a water leakage port is also provided at the bottom of the groove; the flow stabilizing component comprises a fixed seat, the fixed seat is provided with a leakage hole connected to the water leakage port, wherein a movable seat is slidably installed in the middle of the fixed seat; one end of the movable seat is provided with a connecting port connected to the leakage hole, and the other end is provided with an argon blowing pipe; a conical flow stabilizing ring is fixedly connected to the inner wall at the end of the argon blowing pipe, and a plurality of openings are provided on the top of the flow stabilizing ring.

[0007] Furthermore, a cavity is provided in the middle of the fixed seat, and the cavity is arranged in the middle of the leak hole; the movable seat is slidably installed in the cavity. The fixed seat is installed in the cavity, which can limit the movement range of the movable seat and prevent the position of the movable group from shifting; by limiting the movement range of the movable seat, the utility model can more accurately control the position of the argon blowing tube relative to the tundish, thereby achieving fine-tuning of the argon flow rate and direction. This precise control capability helps to optimize the airflow distribution and ensure that the argon gas is evenly diffused in the molten steel. Limiting the range of movement of the movable seat can prevent it from unnecessary displacement or vibration during use. This not only maintains the stability of the argon blowing operation, but also extends the service life of the equipment, reduces operational failures caused by component offset, and improves the reliability and work efficiency of the overall system.

[0008] Furthermore, a hydraulic cylinder is fixedly mounted on the side of the fixed base; the movable rod of the hydraulic cylinder penetrates the cavity and is fixedly connected to the movable base. By controlling the movable rod in the hydraulic cylinder to drive the movable base, the argon blowing process is automatically adjusted. The operator can precisely control the position of the movable base by controlling the hydraulic cylinder without manual adjustment. This not only improves the convenience of operation, but also makes the entire use process more stable and controllable.

[0009] Furthermore, the movable base is internally slidably connected to two stabilizing rails, the left and right sides of which are fixedly connected to the inner wall of the installation chamber; the movable base is slidably sleeved on the stabilizing rails. The movable base cooperates with the stabilizing rails, making the movable base more stable and reliable in movement.

[0010] Furthermore, the other end of the argon blowing tube is fixedly connected to a connecting pipe, which extends outward after passing through the movable base and the fixed base. The outer surface of the connecting pipe is fixedly connected to the movable base. Argon gas enters the argon blowing tube through the connecting pipe and is then discharged through a conical flow stabilizing ring at the end of the argon blowing tube. The discharged gas is uniform and convenient for impurity removal.

[0011] Furthermore, a fixed pipe is fixedly connected to the outside of the fixed seat; a conical guide block is fixedly connected to one side of the connecting pipe, and a sealing ring is sleeved on the outer surface of the conical guide block; the outer surface of the sealing ring contacts the inner wall of the fixed pipe. The sealing ring on the conical guide block plays a sealing role to ensure the circulation effect of argon. The conical guide block can play a guiding role so that argon can be better transported. At the same time, the sealing of the sealing ring will not affect the movement of the connecting pipe. After the movable seat is moved, the conveying pipe is connected to the argon conveying equipment and conveys argon into the conveying pipe. The argon enters the connecting pipe through the fixed pipe and then enters the argon blowing pipe. The sealing ring ensures that there is no leakage during the argon transmission process. The conical guide block makes the airflow smoother, improves the stability of the airflow and the impurity removal efficiency. The connecting pipe can move on the movable seat and maintain good sealing, which enhances the stability and reliability of the equipment under dynamic conditions.

[0012] Furthermore, the leak hole at the bottom of the fixed base is fixedly connected to a leak nozzle. The leak nozzle design helps guide the argon gas into the conical flow stabilizing ring more smoothly, reduces turbulence or stagnation of gas at the leak hole, ensures uniform distribution of the airflow, improves the stability and uniformity of the airflow, and thus improves the impurity removal effect.

[0013] The use method of this utility model:

[0014] When in use, the movable seat cooperates with the fixed seat to connect the argon blowing pipe with the leakage hole of the fixed seat. At this time, argon is introduced, and the argon reaches the conical flow stabilizing ring through the argon blowing pipe. Through several openings on the conical flow stabilizing ring, the argon can be evenly introduced into the groove of the tundish through the leakage port. After that, the second retaining wall cooperates with the first retaining wall to make the argon evenly distributed in the molten steel, and the molten steel is treated to remove impurities. This method makes the argon gas flow smooth and of appropriate size during argon blowing, which can avoid the phenomenon of molten steel overflow; when the connecting port cooperates with the leakage hole, the molten steel contained in the tundish can pass through the leakage port at the bottom of the leakage hole groove of the tundish, through the leakage hole of the fixed seat and the connecting port of the movable seat to be discharged outward; and when the leakage hole of the fixed seat cooperates with the top plate between the connecting port of the movable seat and the argon blowing pipe, the leakage hole stops taking in air or the molten steel stops flowing out.

[0015] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0016] 1. The utility model sets a retaining wall with a specific structure in the ladle and cooperates with the flow stabilization component, which can effectively control the flow and flow rate of argon gas, ensure the stability of the airflow, and avoid the problem of excessive or insufficient fluidity of molten steel caused by unstable airflow in traditional equipment; the conical flow stabilization ring design in the flow stabilization component helps to evenly distribute argon gas in the molten steel, promotes the floating of inclusions, thereby improving the impurity removal efficiency, improving the quality of molten steel, and stabilizing the airflow, thereby reducing the risk of molten steel overflow, protecting the safety of surrounding workers, and reducing material waste in the production process.

[0017] 2. The utility model limits the moving range of the movable seat, which can more accurately control the position of the argon blowing tube relative to the ladle, facilitate fine-tuning of the argon flow and direction, and ensure uniform diffusion of argon in the molten steel. Limiting the movable range of the movable seat can prevent it from unnecessary displacement or vibration during use; the movable rod in the hydraulic cylinder can drive the movable seat to realize automatic adjustment of the argon blowing process, which not only improves the convenience of operation, but also makes the entire use process more stable and controllable; the movable seat cooperates with the stabilizing rail, and the movement of the movable seat is more stable and reliable.

[0018] 3. The conical flow stabilizing ring at the end of the argon blowing tube of the utility model can make the discharged argon gas uniform, which is convenient for impurity removal; the sealing ring provided on the outer surface of the conical guide block ensures that there is no leakage during the argon transmission process, and the conical guide block makes the airflow smoother, improves the stability of the airflow and the impurity removal efficiency, and the connecting pipe can move on the movable seat to maintain good sealing, thereby enhancing the stability and reliability of the equipment under dynamic conditions; the leakage nozzle at the bottom of the fixed seat helps to guide the argon gas into the conical flow stabilizing ring more smoothly, reduces the turbulence or retention of the gas at the leak hole, and ensures that the airflow can be evenly distributed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0020] Figure 2 This is a schematic diagram of the front cross-sectional structure of the tundish of the present invention.

[0021] Figure 3 This is a front sectional structural diagram of the fixing seat of the utility model.

[0022] Figure 4 For this utility model Figure 3 Schematic diagram of the enlarged structure of A in the figure.

[0023] Figure 5 For this utility model Figure 3 Schematic diagram of the enlarged structure of B.

[0024] Figure 6 This is a schematic diagram of the overall structure of the mobile seat of the utility model.

[0025] Figure 7 This is a schematic diagram of the overall structure of the conical flow-stabilizing ring of the utility model.

[0026] Figure ID:

[0027] 1. Tundish; 11. Retaining wall 1; 111. Retaining wall 2; 12. Flow stabilization assembly; 121. Leakage hole; 122. Hydraulic cylinder; 123. Fixed seat; 124. Leakage nozzle; 125. Stabilizing rail; 13. Leakage outlet; 14. Fixed pipe; 141. Delivery pipe; 211. Moving seat; 231. Argon blowing tube; 232. Conical flow stabilization ring; 233. Connecting pipe; 234. Conical guide block; 235. Sealing ring; 236. Opening; 237. Flow hole. DETAILED DESCRIPTION

[0028] The present invention will be further described below with reference to the accompanying drawings.

[0029] Example 1: An argon blowing stabilizer for a tundish of a continuous casting machine comprises a tundish 1, wherein a pair of retaining walls 11 are suspended in the middle of the inner wall of the tundish 1, two retaining walls 111 are fixedly connected to the bottom of the inner wall, and flow stabilizing components 12 are symmetrically arranged on the left and right sides of the bottom, wherein the retaining walls 111 cooperate with the inner wall to form a groove, and a water leakage port 13 is also provided at the bottom of the groove; the flow stabilizing component 12 comprises a fixed seat 121, a leakage hole 211 connected to the water leakage port 13 is provided on the fixed seat 121, wherein a movable seat 123 is slidably installed in the middle of the fixed seat 121; one end of the movable seat 123 is provided with a connection port connected to the leakage hole 211, and the other end is provided with an argon blowing pipe 231; a conical flow stabilizing ring 232 is fixedly connected to the inner wall at the end of the argon blowing pipe 231, and a plurality of openings 236 are provided on the top of the flow stabilizing ring 232.

[0030] When in use, the movable seat 123 cooperates with the fixed seat 121 to connect the argon blowing pipe 231 with the leak hole 211 of the fixed seat 121. At this time, argon gas is introduced, and the argon gas reaches the conical flow stabilizing ring 232 through the argon blowing pipe 121. Through the several openings 236 on the conical flow stabilizing ring 232, the argon gas can be evenly introduced into the groove of the tundish 1 through the water leakage port 13. After that, the retaining wall 2 111 cooperates with the retaining wall 1 11, so that the argon gas can be evenly distributed into the molten steel, and the molten steel can be treated by impurities. This method makes the argon blowing When the argon gas flow is smooth and of appropriate size, overflow of molten steel can be avoided; when the connecting port cooperates with the leakage hole 211, the molten steel contained in the ladle 1 can be discharged outward through the leakage port 13 at the bottom of the groove of the leakage hole 211 of the ladle 1, through the leakage hole 211 of the fixed seat 121 and the connecting port of the movable seat 123; and when the leakage hole 211 of the fixed seat 121 cooperates with the top plate between the connecting port of the movable seat 123 and the argon blowing pipe 231, the leakage hole 211 stops taking in air or the molten steel stops flowing out.

[0031] Example 2: The difference from Example 1 is that a cavity is provided in the middle of the fixed seat 121, and the cavity is arranged in the middle of the leak hole 211; the movable seat 123 is slidably installed in the cavity. The fixed seat 121 is installed in the cavity, which can limit the movement range of the movable seat 123 and prevent the position of the movable group from shifting; by limiting the movement range of the movable seat 123, the utility model can more accurately control the position of the argon blowing tube relative to the tundish, thereby achieving fine-tuning of the argon flow rate and direction. This precise control capability helps to optimize the airflow distribution and ensure that the argon is evenly diffused in the molten steel. Limiting the range of movement of the movable seat 123 can prevent it from unnecessary displacement or vibration during use. This not only maintains the stability of the argon blowing operation, but also extends the service life of the equipment, reduces operational failures caused by component offset, and improves the reliability and work efficiency of the overall system.

[0032] The movable base 123 is internally slidably connected to two stabilizing rails 125, and the left and right sides of the two stabilizing rails 125 are fixedly connected to the inner wall of the installation chamber; the movable base 123 is slidably sleeved on the stabilizing rails 125. The movable base 123 cooperates with the stabilizing rails 125, and the movement of the movable base 123 is more stable and reliable.

[0033] The other end of the argon blowing tube 231 is fixedly connected to a connecting pipe 233. The connecting pipe 233 extends outward through the movable seat 123 and the fixed seat 121, and the outer surface of the connecting pipe 233 is fixedly connected to the movable seat 123. Argon gas enters the argon blowing tube 231 through the connecting pipe 233 and is then discharged through the conical flow stabilizing ring 232 at the end of the argon blowing tube 231. The discharged gas is uniform and convenient for impurity removal.

[0034] The leak hole 211 at the bottom of the fixing base 121 is also fixedly connected to a leak nozzle 124. The design of the leak nozzle 124 helps guide the argon gas into the conical flow stabilizing ring more smoothly, reduces turbulence or stagnation of the gas at the leak hole 211, ensures that the airflow can be evenly distributed, and improves the stability and uniformity of the airflow, thereby improving the impurity removal effect.

[0035] Example 3: Differs from Example 2 in that a hydraulic cylinder 122 is fixedly mounted on the side of the fixed base 121; the movable rod of the hydraulic cylinder 122 penetrates the cavity and is fixedly connected to the movable base 123. By controlling the movable rod in the hydraulic cylinder 122 to drive the movable base 123, the argon blowing process is automatically adjusted. The operator can precisely control the position of the movable base 123 by controlling the hydraulic cylinder 122 without manual adjustment. This not only improves operational convenience but also makes the entire process more stable and controllable.

[0036] The fixed seat 121 is also fixedly connected to the outside of the fixed pipe 14; the connecting pipe 233 is fixedly connected to one side of the conical guide block 234, and the outer surface of the conical guide block 234 is sleeved with a sealing ring 235; the outer surface of the sealing ring 235 contacts the inner wall of the fixed pipe 14. The sealing ring 235 on the conical guide block 234 plays a sealing role to ensure the circulation effect of argon. The conical guide block 234 can play a guiding role so that the argon can be better transported. At the same time, the sealing of the sealing ring 235 will not affect the movement of the connecting pipe 233. After the movable seat 123 is moved, the conveying pipe 141 is connected to the argon conveying equipment to convey the argon into the conveying pipe 141. The argon enters the connecting pipe 233 through the fixed pipe 14 and then enters the argon blowing pipe 231. The sealing ring ensures that there is no leakage during the argon transmission process. The conical guide block makes the airflow smoother, improves the stability of the airflow and the impurity removal efficiency. The connecting pipe can move on the movable seat to maintain good sealing, thereby enhancing the stability and reliability of the equipment under dynamic conditions.

[0037] In the specification of the present invention, a large number of specific details are described. However, it is understood that the embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. An argon-blowing stabilizer for a continuous casting machine tundish, characterized by: The invention comprises an intermediate ladle (1), wherein a pair of retaining walls (11) are suspended in the middle of the inner wall of the intermediate ladle (1), two retaining walls (111) are fixedly connected to the bottom of the inner wall, and flow stabilizing components (12) are symmetrically arranged on the left and right sides of the bottom, wherein the retaining walls (111) cooperate with the inner wall to form a groove, and a water leakage port (13) is also provided at the bottom of the groove; the flow stabilizing component (12) comprises a fixed seat (121), a leakage hole (211) connected to the water leakage port (13) is provided on the fixed seat (121), wherein a movable seat (123) is slidably installed in the middle of the fixed seat (121); one end of the movable seat (123) is provided with a connection port connected to the leakage hole (211), and the other end is provided with an argon blowing pipe (231); a conical flow stabilizing ring (232) is fixedly connected to the inner wall of the end of the argon blowing pipe (231), and a plurality of openings (236) are opened on the top of the flow stabilizing ring (232).

2. The argon blowing stabilizer for the tundish of a continuous casting machine according to claim 1, characterized in that: A cavity is provided in the middle of the fixed seat (121), and the cavity is arranged in the middle of the leak hole (211); the movable seat (123) is slidably installed in the cavity.

3. The argon blowing stabilizer for the tundish of a continuous casting machine according to claim 2, characterized in that: A hydraulic cylinder (122) is fixedly mounted on the side of the fixed seat (121); a movable rod of the hydraulic cylinder (122) penetrates the cavity and is fixedly connected to the movable seat (123).

4. The argon blowing stabilizer for a continuous casting machine tundish according to claim 2 or 3, characterized in that: The movable seat (123) is internally slidably connected to two stabilizing rails (125), and the left and right sides of the two stabilizing rails (125) are fixedly connected to the inner wall of the installation chamber; the movable seat (123) is slidably sleeved on the stabilizing rails (125).

5. The argon blowing stabilizer for the tundish of a continuous casting machine according to claim 1, characterized in that: The other end of the argon blowing tube (231) is fixedly connected to a connecting pipe (233), which extends outward after passing through the movable seat (123) and the fixed seat (121), and the outer surface of the connecting pipe (233) is fixedly connected to the movable seat (123).

6. The argon-blowing flow stabilizer for a continuous casting machine tundish according to claim 5, characterized in that: The fixed seat (121) is also fixedly connected to the outside of a fixed pipe (14); a conical guide block (234) is fixedly connected to one side of the connecting pipe (233); a sealing ring (235) is sleeved on the outer surface of the conical guide block (234); and the outer surface of the sealing ring (235) contacts the inner wall of the fixed pipe (14).

7. The argon blowing stabilizer for the tundish of a continuous casting machine according to claim 1, characterized in that: The leakage hole (211) at the bottom of the fixing seat (121) is also fixedly connected to a leakage nozzle (124).

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