Tundish argon blowing mechanism

Abstract

The tundish argon blowing mechanism comprises a tundish and a tundish cover arranged at an opening in the top of the tundish, the tundish cover is provided with an exhaust port, a long nozzle and a plurality of gas supply ports, and gas supply pipe sets are connected to the gas supply ports in an inserted mode. According to the utility model, the gas supply pipe group is arranged in the tundish, the gas supply pipe group mainly comprises the main pipe, the gas supply pipe and the gas supply coil pipe, and the gas supply coil pipe extends around in the tundish, so that argon can be filled in all positions of molten steel, the molten steel can be quickly filled with the argon, and the working efficiency of continuous casting is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of argon blowing equipment, in particular to an argon blowing mechanism for a tundish. Background Technique

[0002] Argon blowing treatment is a simple secondary refining method for degassing molten steel and removing non-metallic inclusions. Its process is simple, the equipment is cheap, and the refining effect is remarkable. By blowing argon gas into the molten steel, the following effects can be achieved: 1. Uniformly adjust the temperature of the molten steel; 2. Uniform the chemical composition of the molten steel; 3. Remove inclusions in the molten steel; 4. Remove harmful gases in the molten steel. During the continuous casting operation, argon blowing operation is generally carried out on the molten steel at the tundish. When blowing argon, the argon blowing pipeline is generally inserted into the molten steel of the tundish, and then argon gas is blown through the pipeline into the molten steel for reaction. In the utility model patent with the patent number: CN202222912180.3, named: Argon Blowing Device for the Cover of a Continuous Casting Tundish, an argon blowing device is disclosed. It realizes the argon blowing operation of the molten steel in the tundish by setting an argon blowing pipe in the tundish and an exhaust structure on the cover. However, for this kind of argon blowing pipe, the blowing position is relatively fixed. After the argon gas enters the molten steel through the pipeline, it is difficult to quickly and evenly fill the molten steel, which will prolong the reaction time of the molten steel and affect the efficiency of continuous casting. Content of the Utility Model

[0003] The purpose of the utility model is to avoid the deficiencies of the prior art and provide an argon blowing mechanism for a tundish, thereby effectively solving the deficiencies existing in the prior art.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: an argon blowing mechanism for a tundish, including a tundish and a cover arranged at the top opening of the tundish. An exhaust port, a long nozzle, and a plurality of gas supply ports are arranged on the cover, and a gas supply pipe group is inserted at the gas supply port;

[0005] The gas supply pipe group includes a main pipe extending into the tundish. The upper end of the main pipe is connected to a gas supply pipe, the lower end of the main pipe is provided with a shunt joint, and a plurality of serpentine gas supply coils are evenly arranged along the circumference at the lower end of the shunt joint. A plurality of air outlet holes are evenly arranged on the gas supply coils.

[0006] Further, four gas supply coils are arranged along the circumference at the bottom of the shunt joint, and the four gas supply coils extend around in the tundish.

[0007] Further, a clamping head is arranged at one end of the main pipe outside the cover.

[0008] Further, clamping grooves are arranged on the side wall along the circumference of the clamping head.

[0009] Further, the main pipe for the activity is inserted into the air supply port, and the main pipe can move up and down within the air supply port.

[0010] Further, an exhaust pipe is connected to the exhaust port of the covering.

[0011] Further, an exhaust pump is provided on the exhaust pipe.

[0012] The above technical solution of the present utility model has the following beneficial effects: By arranging a gas supply pipe group in the tundish, the gas supply pipe group mainly includes a main pipe, a gas supply pipe and a gas supply coil. The gas supply coil extends everywhere in the tundish, so that argon can be filled into the molten steel at various positions, and then argon can quickly fill the molten steel, greatly improving the working efficiency of continuous casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic front sectional structure view of an embodiment of the present utility model;

[0014] Figure 2 is a bottom view schematic diagram at the gas supply coil of an embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] In order to more clearly understand the above objects, features and advantages of the present utility model, the present utility model will be further described in detail below with reference to the drawings and specific embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0016] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present utility model is not limited by the specific embodiments disclosed below.

[0017] As Figure 1-2 shown, an argon blowing mechanism for a tundish in this embodiment includes a tundish 1 and a covering 2 provided at the top opening of the tundish 1. The covering 2 is provided with an exhaust port, a long nozzle 2a and a plurality of air supply ports, and a gas supply pipe group is inserted at the air supply ports;

[0018] The gas supply pipe group includes a main pipe 3 extending into the tundish. The upper end of the main pipe 3 is connected to a gas supply pipe 4. The gas supply pipe 4 is connected to an argon gas tank. A gas supply pump is provided on the gas supply pipe 4. The gas supply pump pumps the argon gas in the argon gas tank into the main pipe 3. The lower end of the main pipe 3 is provided with a flow dividing joint 5. A plurality of serpentine gas supply coils 6 are circumferentially and uniformly arranged at the lower end of the flow dividing joint 5. A plurality of air outlet holes 6a are uniformly arranged on the gas supply coils 6.

[0019] Four gas supply coils 6 are circumferentially arranged along the bottom of the shunt joint 5, and the four gas supply coils 6 extend around in the tundish.

[0020] One end of the main pipe 3 located outside the ladle cover 2 is provided with a gripping head 7.

[0021] The side wall along the circumference of the gripping head 7 is provided with a gripping groove 7a.

[0022] The main pipe 3 is movably inserted into the gas supply port, and the main pipe 3 can move up and down in the gas supply port.

[0023] By controlling the mechanical gripper arm to grip and clamp it in the gripping groove 7a on the gripping head 7, and then controlling the up and down movement of the robotic arm, the main pipe 3 can be adjusted for up and down displacement in the tundish 1, so as to adjust the gas outlet position of the gas supply coil 6 in the molten steel of the tundish.

[0024] An exhaust pipe 8 is connected to the exhaust port of the ladle cover 2.

[0025] An exhaust pump 9 is provided on the exhaust pipe 8, and the exhaust pump 9 is used to exhaust the gas in the tundish 1.

[0026] The working principle of the present utility model is as follows: The molten steel in the ladle flows into the interior of the tundish 1 along the long nozzle 2a through a pipeline. Subsequently, the gas supply pump is started to pump the argon gas in the argon gas tank along the gas supply pipe into the main pipe 3. The argon gas converges in the shunt joint 5 and is respectively transported to each gas supply coil 6. Then, the argon gas is discharged along the gas outlet holes 6a on each gas supply coil 6. Since the gas supply coils 6 extend to various positions in the tundish 1, the argon gas can quickly fill the molten steel, thereby accelerating the reaction of the molten steel and improving the continuous casting efficiency. At the same time, with the supply of argon gas, the other gases in the tundish 1 are discharged along the exhaust pipe 8 at the exhaust hole, so that the argon gas can fill the entire tundish 1, thereby avoiding the generation of impurities in the molten steel.

[0027] The embodiments of the present utility model are given for purposes of illustration and description, and are not exhaustive or limit the present utility model to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present utility model, and enable those of ordinary skill in the art to understand the present utility model and thus design various embodiments with various modifications suitable for specific purposes.

Claims

1. A tundish argon blowing mechanism, characterized in that: It includes a tundish and a tundish cover arranged at the top opening of the tundish. An exhaust port, a long nozzle, and a number of gas supply ports are arranged on the tundish cover, and a gas supply pipe group is inserted at the gas supply port. The gas supply pipe group includes a main pipe extending into the tundish. The upper end of the main pipe is connected with a gas supply pipe, the lower end of the main pipe is provided with a shunt joint, and a number of serpentine gas supply coils are circumferentially and evenly arranged at the lower end of the shunt joint. A number of gas outlet holes are evenly arranged on the gas supply coils.

2. The argon blowing mechanism for tundish according to claim 1, characterized in that: Four gas supply coils are arranged circumferentially along the bottom of the shunt joint, and the four gas supply coils extend around in the tundish.

3. The argon blowing mechanism for tundish according to claim 2, wherein: A clamping head is arranged at one end of the main pipe outside the tundish cover.

4. The argon blowing mechanism for tundish according to claim 3, characterized in that: Clamping grooves are arranged on the side wall along the circumference of the clamping head.

5. The argon blowing mechanism for tundish according to claim 4, characterized in that: The main pipe is movably inserted into the gas supply port, and the main pipe can move up and down in the gas supply port.

6. The argon blowing mechanism for tundish according to claim 1, characterized in that: An exhaust pipe is connected to the exhaust port of the tundish cover.

7. The argon blowing mechanism for tundish according to claim 6, characterized in that: An exhaust pump is arranged on the exhaust pipe.

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