Tundish argon evacuation device

Abstract

The utility model belongs to metallurgical industry steel -making production equipment technical field, especially for a tundish argon emptying device, including support rod, the front side of support rod is welded with argon tube. The utility model discloses through control motor drives screw rod reverse rotation, makes the adjustment rod drive trapezoidal block move to the direction of approaching trapezoidal groove, and the clearance between trapezoidal block and trapezoidal groove reduces, and the flow area of argon through through -hole reduces, and the flow of argon also reduces along with it, avoids because argon flow too big and leads to tundish temperature fluctuation too big, influences molten steel quality, when needing to increase argon flow, control motor drives screw rod rotation, makes the adjustment rod drive trapezoidal block move to the direction of moving away from trapezoidal groove, and the clearance between trapezoidal block and trapezoidal groove increases, and the flow area of argon through through -hole increases, makes the flow of argon increase, can more quickly discharge the air in tundish, can flexibly adjust argon flow according to actual production demand, and effectively improves the gas flow field of argon in tundish.

Description

Technical Field

[0001] This utility model relates to the technical field of steelmaking production equipment in the metallurgical industry, specifically to an argon venting device for an intermediate ladle. Background Technology

[0002] The argon venting device in the tundish vents air out by introducing argon into the tundish. The argon venting device currently in use has a relatively concentrated blowing area, which can easily cause the temperature of the nozzle seat brick to drop. This can lead to the formation of deposits inside the nozzle during the casting process, causing the stopper rod to rise. More seriously, if the temperature of the nozzle seat brick is too low, the molten steel can easily cause production accidents such as turbulence during the casting process.

[0003] Chinese Patent Publication No. CN208583985U discloses an argon gas venting device for continuous casting tundish, belonging to the technical field of steelmaking production equipment in the metallurgical industry. The technical solution includes a support rod (1), an argon gas pipe (2), an exhaust pipe (3), and exhaust holes. One end of the argon gas pipe (2) is connected to an argon gas source, and the other end is vertically connected to the middle of the exhaust pipe (3). The exhaust pipe (3) has closed ends and multiple rows of exhaust holes along its central axis. The included angle between adjacent rows of exhaust holes is 30-35 degrees. The support rod (1) is vertically fixed to the argon gas pipe (2). The beneficial effects of this invention are: it can improve the gas flow direction of argon gas in the tundish, making the argon gas disperse evenly during the venting process, and can quickly and without reducing the temperature inside the tundish to expel air, reducing the impact on the baking temperature of the nozzle bricks and enhancing the rapid replacement of air inside the tundish.

[0004] However, the device still has some problems. In actual use, the required argon flow rate varies depending on the production stage, the steel grade, and the different usage conditions of the tundish. For example, in the early stage of baking, a larger flow rate of argon may be needed to quickly expel a large amount of air from the tundish. In the later stage of baking or during continuous casting, in order to maintain a stable micro-positive pressure environment in the tundish, prevent outside air from entering, and avoid excessive temperature fluctuations in the tundish due to excessive argon flow, a smaller argon flow rate is required. However, the existing tundish argon venting device does not have a flow control mechanism on the argon pipe, making it impossible to flexibly adjust the argon flow rate according to actual production needs. This may not only lead to argon waste and increased production costs, but also affect the stability of the temperature in the tundish due to improper argon flow control, thus adversely affecting the quality of the molten steel. Therefore, we propose a tundish argon venting device to solve the above problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides an argon venting device for intermediate packages, which solves the problems mentioned in the background section.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0009] An argon venting device for an intermediate package includes a support rod, an argon tube welded to the front side of the support rod, an exhaust pipe connected and fixed to the end of the argon tube, a motor fixedly connected to the top of the argon tube, a circular block fixedly connected inside the argon tube, a trapezoidal groove formed on one side of the circular block, a through hole formed on the inner wall of one side of the trapezoidal groove, a support block fixedly connected to the bottom inner wall of the argon tube, a lead screw rotatably connected to the support block, an adjusting rod threadedly connected to the lead screw, a trapezoidal block fixedly connected to the end of the adjusting rod, the trapezoidal block in movable contact with the trapezoidal groove, a first gear welded to the end of the lead screw, and a second gear fixedly connected to the output shaft of the motor extending into the argon tube, the second gear meshing with the first gear.

[0010] Furthermore, the exhaust pipe is provided with multiple rows of exhaust holes along the central axis, and the included angle between two adjacent rows of exhaust holes is 30-35 degrees.

[0011] Furthermore, a flange is fixedly connected to the other end of the argon gas pipe.

[0012] Furthermore, a guide rod is fixedly connected between one side of the support block and one side of the circular block, and a limit block is slidably connected on the guide rod, with the top of the limit block fixedly connected to the bottom of the adjusting rod.

[0013] Furthermore, the adjusting rod has a threaded hole, and the adjusting rod is threadedly connected to the lead screw through the threaded hole.

[0014] Furthermore, the limiting block is provided with a guide hole, and the limiting block is slidably connected to the guide rod through the limiting hole.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, the present invention provides an argon venting device for an intermediate package, which has the following advantages:

[0017] This invention controls a motor to drive a lead screw to rotate in the opposite direction, causing an adjusting rod to move a trapezoidal block closer to the trapezoidal groove. This reduces the gap between the trapezoidal block and the groove, decreasing the flow area of ​​argon gas through the through-hole and thus reducing the argon flow rate. This prevents excessive temperature fluctuations in the ladle due to excessive argon flow, which could affect the quality of the molten steel. When an increase in argon flow is needed, the motor drives the lead screw to rotate, causing the adjusting rod to move the trapezoidal block away from the groove. This increases the gap between the trapezoidal block and the groove, increasing the flow area of ​​argon gas through the through-hole and thus increasing the argon flow rate. This allows for faster air removal from the ladle, enabling flexible adjustment of the argon flow rate according to actual production needs and effectively improving the gas flow field within the ladle. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram of the other side of this utility model;

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the argon tube cut open according to this utility model.

[0021] In the diagram: 1. Support rod; 2. Argon gas pipe; 3. Exhaust pipe; 4. Motor; 5. Circular block; 6. Frustum groove; 7. Through hole; 8. Support block; 9. Lead screw; 10. Adjusting rod; 11. Frustum block; 12. First gear; 13. Second gear; 14. Exhaust hole; 15. Limiting block; 16. Flange; 17. Guide rod. Detailed Implementation

[0022] 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.

[0023] Example

[0024] like Figure 1-3As shown, an embodiment of this utility model discloses an argon gas venting device for an intermediate package, comprising a support rod 1, an argon gas pipe 2 welded to the front side of the support rod 1, an exhaust pipe 3 connected and fixed to the end of the argon gas pipe 2, a motor 4 fixedly connected to the top of the argon gas pipe 2, a circular block 5 fixedly connected inside the argon gas pipe 2, a trapezoidal groove 6 formed on one side of the circular block 5, a through hole 7 formed on the inner wall of one side of the trapezoidal groove 6, a support block 8 fixedly connected to the bottom inner wall of the argon gas pipe 2, a lead screw 9 rotatably connected to the support block 8, an adjusting rod 10 threadedly connected to the lead screw 9, a trapezoidal block 11 fixedly connected to the end of the adjusting rod 10, the trapezoidal block 11 in movable contact with the trapezoidal groove 6, a first gear 12 welded to the end of the lead screw 9, and a second gear 13 fixedly connected to the output shaft of the motor 4 extending into the argon gas pipe 2, the second gear 13 meshing with the first gear 12. When it is necessary to reduce the argon flow rate, the control motor 4 drives the lead screw 9 to rotate in the opposite direction, causing the adjusting rod 10 to move the trapezoidal block 11 closer to the trapezoidal groove 6. At this time, the gap between the trapezoidal block 11 and the trapezoidal groove 6 decreases, the flow area of ​​argon through the through hole 7 decreases, and the argon flow rate also decreases accordingly. This avoids excessive temperature fluctuations in the tundish due to excessive argon flow rate, which could affect the quality of molten steel. When it is necessary to increase the argon flow rate, the control motor 4 drives the lead screw 9 to rotate, causing the adjusting rod 10 to move the trapezoidal block 11 away from the trapezoidal groove 6. At this time, the gap between the trapezoidal block 11 and the trapezoidal groove 6 increases, the flow area of ​​argon through the through hole 7 increases, thereby increasing the argon flow rate. This allows for faster exhaust of air from the tundish, enabling flexible adjustment of the argon flow rate according to actual production needs and effectively improving the gas flow field of argon in the tundish.

[0025] In some embodiments, the exhaust pipe 3 is provided with multiple rows of exhaust holes 14 along the central axis direction, and the included angle between two adjacent rows of exhaust holes 14 is 30-35 degrees. The other end of the argon pipe 2 is fixedly connected to a flange 16. When argon enters the exhaust pipe 3, it will be discharged into the intermediate package from these exhaust holes 14. This design of multiple rows of exhaust holes 14 distributed at a certain angle enables argon to enter the intermediate package at multiple directions and multiple positions at the same time, thereby improving the gas flow field direction of argon in the intermediate package, making the argon more evenly dispersed in the intermediate package, and facilitating the rapid discharge of air from various areas in the intermediate package.

[0026] In some embodiments, a guide rod 17 is fixedly connected between one side of the support block 8 and one side of the circular block 5, and a limit block 15 is slidably connected on the guide rod 17. The top of the limit block 15 is fixedly connected to the bottom of the adjusting rod 10.

[0027] In some embodiments, the adjusting rod 10 is provided with a threaded hole, and the adjusting rod 10 is threadedly connected to the lead screw 9 through the threaded hole. Under the biting force of the threaded hole and the lead screw 9, the adjusting rod 10 can be fixed after moving to a suitable position.

[0028] In some embodiments, the limiting block 15 is provided with a guide hole, and the limiting block 15 is slidably connected to the guide rod 17 through the limiting hole. The guide rod 17 serves as a guide.

[0029] The working principle or structural principle is as follows: During use, the support rod 1 is fixed to the baffle cover via a bracket. The exhaust pipe 3 is inserted 200mm deep into the baffle and connected to an external argon gas source via flange 16. When argon enters the exhaust pipe 3, it is discharged into the baffle through the exhaust holes 14. This design of multiple rows of exhaust holes 14 distributed at a certain angle allows argon to enter the baffle simultaneously from multiple directions and positions. When the argon flow rate needs to be adjusted, the motor 4 is started. The output shaft of the motor 4 drives the second gear 13 to rotate. Since the second gear 13 meshes with the first gear 12, the first gear 12 will rotate accordingly, thereby driving the lead screw 9 to rotate. When the lead screw 9 rotates, under the limiting action of the guide rod 17 and the limiting block 15, the adjusting rod 10 can only move along the axial direction of the lead screw 9. When it is necessary to reduce the argon flow rate... When the argon flow rate is adjusted, the control motor 4 drives the lead screw 9 to rotate in the opposite direction, causing the adjusting rod 10 to move the trapezoidal block 11 closer to the trapezoidal groove 6. At this time, the gap between the trapezoidal block 11 and the trapezoidal groove 6 decreases, the flow area of ​​argon through the through hole 7 decreases, and the argon flow rate also decreases. This avoids excessive temperature fluctuations in the tundish due to excessive argon flow rate, which could affect the quality of the molten steel. When it is necessary to increase the argon flow rate, the control motor 4 drives the lead screw 9 to rotate, causing the adjusting rod 10 to move the trapezoidal block 11 away from the trapezoidal groove 6. At this time, the gap between the trapezoidal block 11 and the trapezoidal groove 6 increases, the flow area of ​​argon through the through hole 7 increases, thereby increasing the argon flow rate. This allows for faster exhaust of air from the tundish, enabling flexible adjustment of the argon flow rate according to actual production needs and effectively improving the gas flow field of argon in the tundish.

[0030] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the 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 this utility model should be included within the protection scope of this utility model.

Claims

1. An argon venting device for an intermediate container, comprising a support rod (1), characterized in that: An argon tube (2) is welded to the front side of the support rod (1). An exhaust pipe (3) is connected to and fixed to the end of the argon tube (2). A motor (4) is fixedly connected to the top of the argon tube (2). A circular block (5) is fixedly connected inside the argon tube (2). A frustum-shaped groove (6) is opened on one side of the circular block (5). A through hole (7) is opened on the inner wall of one side of the frustum-shaped groove (6). A support block (8) is fixedly connected to the inner wall of the bottom of the argon tube (2). (8) A lead screw (9) is rotatably connected to the lead screw (9), and an adjusting rod (10) is threadedly connected to the lead screw (9). A trapezoidal block (11) is fixedly connected to the end of the adjusting rod (10). The trapezoidal block (11) is in movable contact with the trapezoidal groove (6). A first gear (12) is welded to the end of the lead screw (9). The output shaft of the motor (4) extends into the argon pipe (2) and is fixedly connected to a second gear (13). The second gear (13) meshes with the first gear (12).

2. The argon venting device for an intermediate container according to claim 1, characterized in that: The exhaust pipe (3) has multiple rows of exhaust holes (14) along the central axis, and the included angle between two adjacent rows of exhaust holes (14) is 30-35 degrees.

3. The argon venting device for an intermediate container according to claim 2, characterized in that: The other end of the argon tube (2) is fixedly connected to a flange (16).

4. The argon venting device for an intermediate container according to claim 3, characterized in that: A guide rod (17) is fixedly connected between one side of the support block (8) and one side of the circular block (5). A limit block (15) is slidably connected on the guide rod (17). The top of the limit block (15) is fixedly connected to the bottom of the adjusting rod (10).

5. The argon venting device for an intermediate container according to claim 4, characterized in that: The adjusting rod (10) has a threaded hole, and the adjusting rod (10) is threadedly connected to the lead screw (9) through the threaded hole.

6. The argon venting device for an intermediate container according to claim 5, characterized in that: The limiting block (15) is provided with a guide hole, and the limiting block (15) is slidably connected to the guide rod (17) through the limiting hole.

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