Argon sealing device suitable for continuous casting ladle

Abstract

An argon sealing device suitable for a continuous casting steel ladle comprises two argon sealing parts which are symmetrically arranged at the two ends of a continuous casting rotary platform. The argon sealing part comprises an argon blowing mechanism, a rotating mechanism and a guide mechanism; the rotating mechanism and the guide mechanism are both arranged on the continuous casting rotary table platform; the argon blowing mechanism is arranged on the rotating mechanism and the guide mechanism; the rotating mechanism comprises a supporting piece and a rotating piece; the supporting piece is arranged on the continuous casting rotary platform; the number of the rotating pieces is two, and the rotating pieces are symmetrically arranged on the two sides of the supporting piece. The top end of the steel ladle is effectively prevented from being in contact with air in the pouring stage of the steel ladle, and reoxidation is avoided.

Description

Technical Field

[0001] The utility model relates to an argon sealing device, in particular to a device for isolating oxygen from the gap between a continuous casting ladle and a ladle cover through argon gas, belonging to the technical field of continuous casting equipment. Background Art

[0002] The production process of continuously casting high-temperature molten steel into ingots with a certain cross-sectional shape and certain size specifications is called continuous steel casting; the equipment required to complete this process is called a continuous casting machine; in the continuous casting production process, the ladle filled with molten steel is first hoisted to a turntable, rotated to the pouring position, and the water inlet is opened to start the steel pouring operation. Usually, after the ladle is hoisted to the turntable, in order to keep the molten steel warm, it is covered throughout the process. After the pouring is completed, the cover is removed and the empty ladle is lifted off the turntable; due to a certain gap between the ladle cover and the ladle mouth, the molten steel in the ladle is directly in contact with the surrounding air, especially during the pouring process, due to the influence of the ladle bottom injection flow, a certain negative pressure will be formed at the ladle mouth, so that the surrounding air passes through the gap between the ladle cover and the ladle mouth and quickly reacts with the molten steel in the ladle, thereby aggravating the secondary oxidation of the molten steel during the pouring process and affecting the quality of the molten steel; therefore, an argon sealing device that can inhibit the contact between molten steel and air on the turntable is needed to reduce the secondary oxidation reaction of the molten steel during the pouring process and improve the quality of the molten steel. Utility Model Content

[0003] The utility model aims to overcome the shortcomings of the prior art and provide an argon sealing device suitable for a continuous casting ladle, which can effectively reduce the contact amount of the continuous casting ladle with air during the casting process and reduce the secondary oxidation reaction as much as possible.

[0004] The problem described in the utility model is solved by the following technical solutions:

[0005] An argon sealing device suitable for a continuous casting ladle comprises two argon sealing parts, and the two argon sealing parts are symmetrically arranged at both ends of a continuous casting rotary platform; the argon sealing parts comprise an argon blowing mechanism, a rotating mechanism and a guiding mechanism; the rotating mechanism and the guiding mechanism are both arranged on the continuous casting rotary platform; the argon blowing mechanism is arranged on the rotating mechanism and the guiding mechanism; the rotating mechanism comprises a supporting member and a rotating member; the supporting member is arranged on the continuous casting rotary platform; the number of the rotating members is two, and they are symmetrically arranged on both sides of the supporting member.

[0006] The above-mentioned argon sealing device is suitable for a continuous casting ladle, and the support member includes a column, a bottom long plate, a top long plate and a side connecting plate; the column is arranged on the continuous casting turntable; the bottom long plate is arranged at the top end of the column; the side connecting plate is arranged on one side of the bottom long connecting plate, and the top long plate is arranged at the top end of the side connecting plate; the top long plate is located directly above the bottom long plate.

[0007] The above-mentioned argon sealing device is suitable for a continuous casting ladle, and the rotating part includes a support rod, a connecting shaft and a motor; the two ends of the connecting shaft are respectively axially connected to the bottom end surface of the top long plate and the top end surface of the bottom long plate; the motor housing is arranged on the bottom end surface of the bottom long plate, and the motor output shaft passes through the bottom long plate and is connected to the connecting shaft; the support rod is horizontally arranged on the connecting shaft.

[0008] The above-mentioned argon sealing device suitable for a continuous casting ladle, the argon blowing mechanism includes two argon blowing parts, and the two argon blowing parts are symmetrically arranged at the ends of two support rods; the argon blowing parts include an arc-shaped hollow tube and a duckbill-shaped nozzle; the center of the outer wall of the arc-shaped hollow tube is connected to the end of the support rod away from the connecting shaft; a channel is arranged inside the support rod, one end of the channel is connected to the cavity inside the arc-shaped hollow tube, and the other end is arranged to be connected to the vent hole on the side wall of the support rod, and the vent hole is connected to the argon source through the air pipe; a plurality of duckbill-shaped nozzles are evenly arranged on the inner wall of the arc-shaped hollow tube, and the duckbill-shaped nozzles are connected to the inner cavity of the arc-shaped hollow tube.

[0009] The above-mentioned argon sealing device is suitable for a continuous casting ladle, and the guide mechanism includes an arc guide rail and a guide block; the arc guide rail is arranged on the continuous casting rotary platform through a bracket; the axis center line of the arc guide rail coincides with the axis center line of the connecting shaft; the guide block is arranged on the side wall of the arc hollow tube, and the bottom end of the guide block is slidably arranged on the arc guide rail.

[0010] The utility model drives the argon blowing mechanism to close and blows high-pressure argon gas into the gap between the ladle and the ladle cover through the rotating mechanism. Through the injection of high-pressure argon gas, the ladle is filled with argon gas and replaced with oxygen, thereby effectively avoiding the oxidation reaction between the molten steel in the ladle and the air. The guide mechanism ensures that the argon blowing mechanism can be reliably driven by the rotating mechanism for rotation and movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the three-dimensional structure at a low angle of the present utility model;

[0012] Figure 2 It is a schematic diagram of the elevation-angle three-dimensional structure of the utility model.

[0013] The list of numbers in the figure is: 1. continuous casting rotary platform, 2. column, 3. bottom long plate, 4. top long plate, 5. side connecting plate, 6. support rod, 7. motor, 8. arc hollow tube, 9. duckbill nozzle, 10. arc guide rail, 11. guide block. DETAILED DESCRIPTION

[0014] See also Figure 1 and Figure 2The utility model includes two argon sealing parts, and the two argon sealing parts are symmetrically arranged at the two ends of the continuous casting rotary platform 1; because two ladles are respectively arranged at the two ends of the rotary platform, the two pairs of argon sealing parts correspond to different ladles respectively; the argon sealing part includes an argon blowing mechanism, a rotating mechanism and a guiding mechanism; the rotating mechanism and the guiding mechanism are both arranged on the continuous casting rotary platform; the argon blowing mechanism is arranged on the rotating mechanism and the guiding mechanism; the rotating mechanism is used to drive the argon blowing mechanism to rotate and move, and then combine the argon blowing out of the gap between the ladle and the ladle cover to seal the air; the rotating mechanism includes a supporting member and a rotating member; the supporting member is arranged on the continuous casting rotary platform 1; the number of the rotating members is two, and they are symmetrically arranged on both sides of the supporting member.

[0015] The support member includes a column 2, a bottom long plate 3, a top long plate 4 and a side connecting plate 5; the column 2 is arranged on the continuous casting turntable; the bottom long plate 3 is arranged at the top end of the column 2; the side connecting plate 5 is arranged on one side of the bottom long connecting plate, and the top long plate 4 is arranged at the top end of the side connecting plate 5; the top long plate 4 is located directly above the bottom long plate 3.

[0016] The rotating part includes a support rod 6, a connecting shaft and a motor 7; the two ends of the connecting shaft are axially connected to the bottom end surface of the top long plate 4 and the top end surface of the bottom long plate 3 respectively; the connecting shaft is axially arranged between the top long plate 4 and the bottom long plate 3; the housing of the motor 7 is arranged on the bottom end surface of the bottom long plate 3, and the output shaft of the motor 7 passes through the bottom long plate 3 and is connected to the connecting shaft; the motor 7 drives the connecting shaft to rotate; the support rod 6 is horizontally arranged on the connecting shaft; the motor 7 drives the argon blowing part to move through the support rod 6.

[0017] The argon blowing mechanism includes two argon blowing parts, which are symmetrically arranged at the ends of two support rods 6; the argon blowing parts include an arc-shaped hollow tube 8 and a duckbill-shaped nozzle 9; the center of the outer wall of the arc-shaped hollow tube 8 is connected to the end of the support rod 6 away from the connecting axis; a channel is arranged inside the support rod 6, one end of the channel is connected to the cavity inside the arc-shaped hollow tube 8, and the other end is arranged to be connected to the vent on the side wall of the support rod 6, and the vent is connected to the argon source through the air pipe; the argon passes through the vent of the support rod 6, the internal channel of the support rod 6, and the arc-shaped hollow tube 8 in turn, and finally sprayed out from the duckbill-shaped nozzle 9; the duckbill-shaped nozzle 9 can be inserted into the gap between the ladle and the ladle cover, so that the argon can penetrate deeper into the ladle; a plurality of duckbill-shaped nozzles 9 are evenly arranged on the inner wall of the arc-shaped hollow tube 8, and the duckbill-shaped nozzles 9 are connected to the inner cavity of the arc-shaped hollow tube 8.

[0018] The guide mechanism includes an arc guide rail 10 and a guide block 11; the arc guide rail 10 is arranged on the continuous casting rotary platform 1 through a bracket; the axis line of the arc guide rail 10 coincides with the axis line of the connecting shaft; the guide block 11 is arranged on the side wall of the arc hollow tube 8, and the bottom end of the guide block 11 is slidably arranged on the arc guide rail 10; the guide block 11 provides mobile support for the rotational movement of the arc hollow tube 8, ensuring that the arc hollow tube 8 can be reliably displaced.

[0019] Actual use process: in the initial state, the two arc-shaped hollow tubes 8 are in a state of being away from each other; after the ladle is in place on the continuous casting rotary platform 1 through the lifting equipment; start the two motors 7 to rotate the two support rods 6, thereby driving the two arc-shaped hollow tubes 8 to move closer to each other until the duckbill-shaped nozzle 9 is inserted into the gap between the ladle and the ladle cover, stop the action of the motor 7, and connect the argon source at the same time, so that the argon gas is injected into the ladle through the duckbill-shaped nozzle, pushing out the air inside it and preventing outside air from entering the ladle; after the ladle is cast, the motor 7 reverses, driving the arc-shaped hollow tubes 8 to move away from each other, and closes the argon source, and finally lifts the ladle away.

Claims

1. An argon sealing device suitable for a continuous casting ladle, characterized in that: It comprises two argon sealing parts, and the two argon sealing parts are symmetrically arranged at two ends of a continuous casting rotary platform (1); the argon sealing parts comprise an argon blowing mechanism, a rotating mechanism and a guiding mechanism; the rotating mechanism and the guiding mechanism are both arranged on the continuous casting rotary platform; the argon blowing mechanism is arranged on the rotating mechanism and the guiding mechanism; the rotating mechanism comprises a supporting part and a rotating part; the supporting part is arranged on the continuous casting rotary platform (1); the number of the rotating parts is two, and they are symmetrically arranged on both sides of the supporting part.

2. The argon sealing device for continuous casting ladle according to claim 1, characterized in that: The support member comprises a column (2), a bottom long plate (3), a top long plate (4) and a side connecting plate (5); the column (2) is arranged on the continuous casting turntable; the bottom long plate (3) is arranged at the top end of the column (2); the side connecting plate (5) is arranged on one side of the bottom long connecting plate, and the top end of the side connecting plate (5) is provided with the top long plate (4); the top long plate (4) is located directly above the bottom long plate (3).

3. The argon sealing device for continuous casting ladle according to claim 2, characterized in that: The rotating member comprises a support rod (6), a connecting shaft and a motor (7); the two ends of the connecting shaft are axially connected to the bottom end surface of the top long plate (4) and the top end surface of the bottom long plate (3) respectively; the housing of the motor (7) is arranged on the bottom end surface of the bottom long plate (3), and the output shaft of the motor (7) passes through the bottom long plate (3) and is connected to the connecting shaft; the support rod (6) is horizontally arranged on the connecting shaft.

4. The argon sealing device for continuous casting ladle according to claim 3, characterized in that: The argon blowing mechanism comprises two argon blowing parts, which are symmetrically arranged at the ends of two support rods (6); the argon blowing parts comprise an arc-shaped hollow tube (8) and a duckbill-shaped nozzle (9); the center of the outer wall of the arc-shaped hollow tube (8) is connected to an end of the support rod (6) away from the connecting axis; a channel is arranged inside the support rod (6), one end of the channel is connected to the inner cavity of the arc-shaped hollow tube (8), and the other end is arranged to be connected to a vent hole on the side wall of the support rod (6), and the vent hole is connected to an argon gas source through an air pipe; a plurality of duckbill-shaped nozzles (9) are evenly arranged on the inner wall of the arc-shaped hollow tube (8), and the duckbill-shaped nozzles (9) are connected to the inner cavity of the arc-shaped hollow tube (8).

5. The argon sealing device for continuous casting ladle according to claim 4, characterized in that: The guide mechanism comprises an arc-shaped guide rail (10) and a guide block (11); the arc-shaped guide rail (10) is arranged on the continuous casting rotary platform (1) through a bracket; the axis center line of the arc-shaped guide rail (10) coincides with the axis center line of the connecting shaft; the guide block (11) is arranged on the side wall of the arc-shaped hollow tube (8), and the bottom end of the guide block (11) is slidably arranged on the arc-shaped guide rail (10).

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