Continuous casting argon blowing stopper rod

Abstract

The utility model discloses a continuous casting argon blowing stopper rod, which relates to the technical field of argon blowing stopper rods, and comprises a stopper rod body and a stopper head, one side of the stopper rod body is provided with an air inlet channel, the stopper rod body is internally provided with a shunting hole, the shunting hole penetrates through the stopper head, and the shunting hole is communicated with the air inlet channel. By the adoption of the structure, the multiple flow dividing holes are formed in the air inlet channel of the stopper rod body and extend to pass through the stopper head, the design of the multiple flow dividing holes in the continuous casting argon blowing stopper rod is beneficial to reducing the pressure load of a single air inlet channel, the risk of airflow blocking is reduced, each flow dividing hole can bear small airflow pressure, and therefore the continuous casting argon blowing stopper rod is good in sealing performance. Therefore, the situation that a single air inlet channel is possibly blocked or damaged due to the fact that the single air inlet channel bears too large pressure is avoided, even if a certain flow dividing hole is slightly blocked or breaks down, other flow dividing holes can still work continuously, and the continuity of the argon blowing process is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of argon blowing stopper rods, in particular to a continuous casting argon blowing stopper rod. Background Art

[0002] The role of the stopper rod in the steelmaking continuous casting process is indeed crucial. It is not only one of the three major pieces of functional refractory materials for continuous casting, but also plays multiple roles. The argon blowing function of the stopper rod is another notable feature. By blowing argon or other inert gases into the tundish, the stopper rod can effectively promote the floating of inclusions in the molten steel, thereby achieving the purpose of purifying the molten steel.

[0003] For example, a Chinese patent with publication number CN218744828U discloses a continuous casting argon blowing stopper rod, including a stopper rod body, one end of the stopper rod body is fixedly connected to a stopper rod head, the stopper rod head is circular cylindrical and the end of the stopper rod head away from the stopper rod body is spherical, a constraint cavity is opened inside the stopper rod head, the constraint cavity is a spherical cavity, and a tubular argon gas channel is opened at the end of the stopper rod body away from the stopper rod head, the tubular argon gas channel is a circular groove and extends to the interior of the constraint cavity.

[0004] Although the above-mentioned argon blowing stopper rod can diffusely blow argon into the molten steel to form small and uniform bubbles to eliminate the influence of large bubbles on the liquid level fluctuation of the crystallizer, there are still defects that need to be improved. The air inlet channel is a single channel, and the pressure load is relatively large when argon enters. The single channel may be blocked or damaged due to the excessive pressure. If the channel is slightly blocked or fails, the argon blowing operation can no longer be carried out. When the argon blowing work is completed and the machine is shut down, if an operating error occurs, part of the molten steel may enter the stopper rod and cause blockage. In addition, since a certain amount of molten steel will adhere to the filter screen, the design structure is not convenient for quick maintenance, which brings inconvenience to the maintenance work. Utility Model Content

[0005] In view of the problems mentioned in the background technology, the purpose of the utility model is to provide a continuous casting argon blowing plug rod to solve the problems in the background technology.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions:

[0007] A continuous casting argon blowing stopper rod, comprising a stopper rod body and a stopper head, wherein an air inlet channel is provided on one side of the stopper rod body, a diverter hole is provided inside the stopper rod body, the diverter hole passes through the stopper head, and the diverter hole is communicated with the air inlet channel, a first fixed disk is fixedly connected to one side of the stopper rod body, a first docking ring is fixedly connected to one end of the first fixed disk, a second fixed disk is fixedly connected to one side of the stopper head, a first docking groove is provided on one side of the second fixed disk, the first docking ring is movably connected to the first docking groove, a third fixed disk is fixedly connected to one side of the first fixed disk, a fourth fixed disk is fixedly connected to one side of the second fixed disk, and a first fixed disk is provided between the third fixed disk and the fourth fixed disk. The plug head is provided with a mounting plate, one side of the mounting plate is fixedly connected to a filter screen, one side of the mounting plate is provided with a second fixing plate, and one side of the mounting plate is provided with a second fixing plate. A side of the mounting plate is fixedly connected to a fourth fixing plate, and one end of the fourth fixing plate is fixedly connected to a second docking ring, and the second docking ring is movably connected to the second docking groove. Driving components are provided on both sides of one end of the plug rod body, and a closing plate is slidably connected to both sides of one end of the plug rod body through the driving component, and the closing plate covers one side of the diversion hole. An installation plate is provided inside the plug head, one side of the mounting plate is fixedly connected to a filter screen, and a second fixing component is provided on one side of the mounting plate, and a lifting block is fixedly connected to the side of the mounting plate away from the filter screen.

[0008] As a preferred technical solution, the drive assembly includes a slide groove, which is opened on both sides of one end of the stopper rod body, a motor is fixedly connected to one side of the interior of the slide groove, a screw rod is fixedly connected to the output end of the motor, the screw rod is rotatably connected to the interior of the slide groove, a screw block is slidably connected to the interior of the slide groove, and the screw block is threadedly connected to one side of the screw rod.

[0009] As a preferred technical solution, a spacer is fixedly connected to the interior of the slide groove, and the screw rod is rotatably connected to the spacer.

[0010] As a preferred technical solution, a connection groove is provided on one side of the closing plate, and a connection block is fixedly connected to the other side of the closing plate, and the connection block is movably connected to the connection groove.

[0011] As a preferred technical solution, positioning rods are fixedly connected to both sides of one end of the first fixing plate, positioning holes are opened on both sides of one end of the second fixing plate, and the positioning rods are movably connected to the positioning holes.

[0012] As a preferred technical solution, the first fixing assembly includes a first fixing block, the first fixing block is fixedly connected to one side of the third fixing plate, one side of the fourth fixing plate is fixedly connected to a second fixing block, and the first fixing block and the second fixing block are fixedly connected by a first screw.

[0013] As a preferred technical solution, the second fixing assembly includes a second screw, the mounting plate is fixedly connected to the plug via the second screw, positioning blocks are fixedly connected to both sides of the plug, positioning grooves are provided on both sides of the mounting plate, and the positioning blocks are movably connected to the positioning grooves.

[0014] In summary, the utility model mainly has the following beneficial effects:

[0015] First, in the utility model, a plurality of diverter holes are provided in the air inlet channel of the stopper rod body, and the diverter holes extend through the plug head. The design of the plurality of diverter holes helps to reduce the pressure load of a single air inlet channel in the continuous casting argon blowing stopper rod, and reduces the risk of airflow blockage, so that each diverter hole can bear a smaller airflow pressure, thereby avoiding the blockage or damage of a single air inlet channel due to excessive pressure. Even if a diverter hole is slightly blocked or fails, the other diverter holes can continue to work, ensuring the continuity of the argon blowing process;

[0016] Second, in the utility model, when the argon blowing work of molten steel is about to end, the closing plate on the stopper rod body is driven by the driving assembly to move, so that the closing plate blocks the diversion hole on the stopper rod body, thereby preventing the molten steel from entering. The molten steel entering the plug head can be separated from the stopper rod body by the first fixing assembly, so that the plug head can be conveniently disassembled to clean the molten steel, and the filter screen can be separated from the plug head by the second fixing assembly, so that the filter screen can be conveniently cleaned or replaced;

[0017] Second, in the utility model, by arranging the first fixed plate, the first docking ring, the second fixed plate, the first docking groove, the third fixed plate, the second docking groove, the fourth fixed plate, and the second docking ring, it is not only convenient to separate the plug head and the stopper rod body, but also can improve the sealing of the connection between the plug head and the stopper rod body, so that molten steel is not easy to enter from the joint, so that the overall sealing of the stopper rod is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure of one side of the stopper rod body of the utility model;

[0020] Figure 3 It is a schematic diagram of the structure of one side of the plug head of the utility model;

[0021] Figure 4 It is a schematic diagram of the closed plate structure of the utility model;

[0022] Figure 5 This utility model Figure 2 A is an enlarged structural diagram of FIG.

[0023] 1. The plug rod body; 2. The air inlet channel; 3. The diverter hole; 4. The first fixed plate; 5. The first docking ring; 6. The second fixed plate; 7. The first docking groove; 8. The third fixed plate; 9. The second docking groove; 10. The fourth fixed plate; 11. The second docking ring; 12. The closing plate; 13. The driving assembly; 131. The motor; 132. The screw rod; 133. The screw block; 134. The slide groove; 135. The spacer block; 14. The connecting block; 15. The connecting groove; 16. The positioning rod; 17. The positioning hole; 18. The first fixing assembly; 181. The first fixing block; 182. The second fixing block; 183. The first screw; 19. The second fixing assembly; 191. The second screw; 192. The positioning block; 193. The positioning groove; 20. The mounting plate; 21. The filter screen; 22. The lifting block; 23. The plug head. DETAILED DESCRIPTION

[0024] Example

[0025] refer to Figures 1 to 5, a continuous casting argon blowing stopper rod described in this embodiment comprises a stopper rod body 1 and a plug head 23, an air inlet channel 2 is provided on one side of the stopper rod body 1, a diverter hole 3 is provided inside the stopper rod body 1, the diverter hole 3 penetrates the plug head 23, and the diverter hole 3 is communicated with the air inlet channel 2, a first fixed disk 4 is fixedly connected to one side of the stopper rod body 1, a first docking ring 5 is fixedly connected to one end of the first fixed disk 4, a second fixed disk 6 is fixedly connected to one side of the plug head 23, a first docking groove 7 is provided on one side of the second fixed disk 6, the first docking ring 5 is movably connected to the first docking groove 7, a third fixed disk 8 is fixedly connected to one side of the first fixed disk 4, a fourth fixed disk 10 is fixedly connected to one side of the second fixed disk 6, a first fixing assembly 18 is provided between the third fixed disk 8 and the fourth fixed disk 10, a third fixed disk 8 is fixedly connected to one side of the first fixed disk 4, a second docking groove 9 is provided on one side of the third fixed disk 8, a fourth fixed disk 10 is fixedly connected to one side of the second fixed disk 6, and a fourth fixed disk 10 is movably connected to one side of the second fixed disk 6. A second docking ring 11 is fixedly connected to one end of the disk 10, and the second docking ring 11 is movably connected to the second docking groove 9. A driving assembly 13 is provided on both sides of one end of the stopper rod body 1. A closing plate 12 is slidably connected to both sides of one end of the stopper rod body 1 through the driving assembly 13. The closing plate 12 covers one side of the diversion hole 3. A mounting disk 20 is provided inside the plug head 23, and a filter screen 21 is fixedly connected to one side of the mounting disk 20. A second fixing assembly 19 is provided on one side of the mounting disk 20. A lifting block 22 is fixedly connected to the side of the mounting disk 20 away from the filter screen 21. The setting of the lifting block 22 facilitates the staff to remove the mounting disk 20 from the plug head 23. The design of multiple diversion holes 3 helps to reduce the pressure load of a single air inlet channel 2 in the continuous casting argon blowing stopper rod and reduce the risk of airflow blockage. Multiple diversion holes 3 introduce airflow, which can ensure that the airflow is more evenly distributed inside the stopper rod, form more uniform bubbles during argon blowing, and improve the stirring effect and uniformity of the molten steel.

[0026] refer to Figure 5The driving assembly 13 includes a slide groove 134, which is provided on both sides of one end of the stopper rod body 1, and a motor 131 is fixedly connected to one side of the slide groove 134, and a screw rod 132 is fixedly connected to the output end of the motor 131, and the screw rod 132 is rotatably connected to the inside of the slide groove 134, and a screw block 133 is slidably connected to the inside of the slide groove 134, and the screw block 133 is threadedly connected to one side of the screw rod 132, and a spacer 135 is fixedly connected to the inside of the slide groove 134, and the screw rod 132 is rotatably connected to the On the spacer block 135; by setting the driving component 13, the motor 131 is used to drive the screw rod 132 to rotate in the slide groove 134, so that the screw block 133 on the screw rod 132 can move in the slide groove 134, so that the screw block 133 drives the closing plate 12 to move to block the diverter hole 3 on the stopper rod body 1, thereby preventing molten steel from entering the stopper rod body 1 from the plug head 23 to cause blockage and affect the use of the stopper rod; a spacer block 135 is set to limit the sliding position of the screw block 133 to avoid contact with the motor 131.

[0027] refer to Figure 4 A connecting groove 15 is provided on one side of the closing plate 12, and a connecting block 14 is fixedly connected to the other side of the closing plate 12, and the connecting block 14 is movably connected to the connecting groove 15; by setting the connecting groove 15 and the connecting block 14, the two closing plates 12 can be more tightly connected after docking, which is beneficial for the closing plate 12 to block the diversion hole 3.

[0028] refer to Figure 2-3 The first fixed plate 4 is fixedly connected with positioning rods 16 on both sides of one end, and the second fixed plate 6 is provided with positioning holes 17 on both sides of one end, and the positioning rods 16 are movably connected with the positioning holes 17; by setting the positioning rods 16 and the positioning holes 17, the first fixed plate 4 and the second fixed plate 6 are guided to dock, so that the connection between the two is faster.

[0029] refer to Figure 1 The first fixing assembly 18 includes a first fixing block 181, the first fixing block 181 is fixedly connected to one side of the third fixing disk 8, and a second fixing block 182 is fixedly connected to one side of the fourth fixing disk 10. The first fixing block 181 and the second fixing block 182 are fixedly connected by a first screw 183; the first fixing block 181 and the second fixing block 182 are connected by the first screw 183, so that the plug 23 and the plug rod body 1 are connected and fixed, and it is also very simple to remove the plug 23.

[0030] refer to Figure 3The second fixing component 19 includes a second screw 191, and the mounting disk 20 is fixedly connected to the plug 23 by the second screw 191. Positioning blocks 192 are fixedly connected to both sides of the plug 23. Positioning grooves 193 are provided on both sides of the mounting disk 20, and the positioning blocks 192 are movably connected to the positioning grooves 193; the mounting disk 20 and the plug 23 can be connected and fixed by the second screw 191, and it is also very simple to disassemble the mounting disk 20. The positioning blocks 192 and the positioning grooves 193 are provided to locate the position of the mounting disk 20, so that the mounting disk 20 can be installed on the plug 23 more reliably.

[0031] Principle and advantages of use: The gas enters into the multiple diverter holes 3 of the stopper rod body 1 through the air inlet channel 2, and then enters into the multiple diverter holes 3 on the plug head 23, so that the gas enters into the molten steel evenly to form more even bubbles. The design of multiple diverter holes 3 helps to reduce the pressure load of a single air inlet channel 2 in the continuous casting argon blowing stopper rod, and reduces the risk of airflow blockage, so that each diverter hole 3 can bear a smaller airflow pressure, thereby avoiding the blockage or damage of a single air inlet channel 2 due to excessive pressure. Even if a diverter hole 3 is slightly blocked or fails, the other diverter holes 3 can continue to work, ensuring the continuity of the argon blowing process. When the argon blowing work of the molten steel is about to end, the motor 131 is used to drive the screw rod 132 to rotate the driving screw block 133 , so that the screw block 133 drives the closing plate 12 to move, and the closing plate 12 blocks the diverter hole 3 on the stopper rod body 1 to prevent molten steel from entering. When the plug 23 needs to be disassembled for maintenance, the first screw 183 is removed from the first fixing block 181 and the second fixing block 182, the plug 23 is removed, and then the second screw 191 is removed from the mounting plate 20, and the multiple filter screens 21 can be removed, so as to facilitate cleaning and maintenance of the internal structure of the plug 23. Since the first docking ring 5, the first docking groove 7, the second docking groove 9, and the second docking ring 11 are provided between the plug 23 and the stopper rod body 1, the plug 23 is more tightly connected to the stopper rod body 1, and molten steel is not easy to enter from the joint during operation, so that the overall sealing of the stopper rod is guaranteed.

Claims

1. A continuous casting argon blowing stopper rod, comprising a stopper rod body (1) and a stopper head (23), characterized in that: An air inlet passage (2) is provided on one side of the stopper rod body (1), a flow dividing hole (3) is provided inside the stopper rod body (1), the flow dividing hole (3) passes through the plug head (23), and the flow dividing hole (3) is communicated with the air inlet passage (2), a first fixed plate (4) is fixedly connected to one side of the stopper rod body (1), a first docking ring (5) is fixedly connected to one end of the first fixed plate (4), a second fixed plate (6) is fixedly connected to one side of the plug head (23), a first docking groove (7) is provided on one side of the second fixed plate (6), and the first docking ring (5) is movably connected to the first docking groove (7), a third fixed plate (8) is fixedly connected to one side of the first fixed plate (4), a fourth fixed plate (10) is fixedly connected to one side of the second fixed plate (6), a first fixing assembly (18) is provided between the third fixed plate (8) and the fourth fixed plate (10), and a first fixed plate (4) is fixedly connected to one side of the first fixed plate (4). A third fixed disk (8) is fixedly connected, a second docking groove (9) is provided on one side of the third fixed disk (8), a fourth fixed disk (10) is fixedly connected on one side of the second fixed disk (6), a second docking ring (11) is fixedly connected to one end of the fourth fixed disk (10), the second docking ring (11) is movably connected to the second docking groove (9), a driving assembly (13) is provided on both sides of one end of the stopper rod body (1), a closing plate (12) is slidably connected to both sides of one end of the stopper rod body (1) through the driving assembly (13), the closing plate (12) covers one side of the diversion hole (3), a mounting disk (20) is provided inside the plug head (23), a filter screen (21) is fixedly connected to one side of the mounting disk (20), a second fixed assembly (19) is provided on one side of the mounting disk (20), and a lifting block (22) is fixedly connected to the side of the mounting disk (20) away from the filter screen (21).

2. The continuous casting argon blowing stopper rod according to claim 1, characterized in that: The driving assembly (13) comprises a slide groove (134), wherein the slide groove (134) is provided on both sides of one end of the stopper rod body (1), a motor (131) is fixedly connected to one side of the slide groove (134), a screw rod (132) is fixedly connected to the output end of the motor (131), the screw rod (132) is rotatably connected to the inside of the slide groove (134), a screw block (133) is slidably connected to the inside of the slide groove (134), and the screw block (133) is threadedly connected to one side of the screw rod (132).

3. The continuous casting argon blowing stopper rod according to claim 2, characterized in that: A spacer block (135) is fixedly connected inside the slide groove (134), and the screw rod (132) is rotatably connected to the spacer block (135).

4. The continuous casting argon blowing stopper rod according to claim 1, characterized in that: A connection groove (15) is provided on one side of the closing plate (12), and a connection block (14) is fixedly connected to the other side of the closing plate (12), and the connection block (14) is movably connected to the connection groove (15).

5. The continuous casting argon blowing stopper rod according to claim 1, characterized in that: Positioning rods (16) are fixedly connected to both sides of one end of the first fixing plate (4), and positioning holes (17) are opened on both sides of one end of the second fixing plate (6), and the positioning rods (16) are movably connected to the positioning holes (17).

6. The continuous casting argon blowing stopper rod according to claim 1, characterized in that: The first fixing assembly (18) comprises a first fixing block (181), the first fixing block (181) being fixedly connected to one side of the third fixing plate (8), a second fixing block (182) being fixedly connected to one side of the fourth fixing plate (10), the first fixing block (181) and the second fixing block (182) being fixedly connected via a first screw (183).

7. The continuous casting argon blowing stopper rod according to claim 1, characterized in that: The second fixing assembly (19) comprises a second screw (191), the mounting plate (20) is fixedly connected to the plug (23) via the second screw (191), both sides of the plug (23) are fixedly connected with positioning blocks (192), both sides of the mounting plate (20) are provided with positioning grooves (193), and the positioning blocks (192) are movably connected to the positioning grooves (193).

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