Tundish with blowing function

Abstract

The utility model relates to the technical field of tundishes, one embodiment of the utility model provides a tundish with an air blowing function, the tundish comprises a tundish body, a tundish cover and an inert gas nozzle, the tundish cover is arranged on the tundish body in a sealed mode, the tundish cover is provided with an exhaust port and a molten steel injection hole, the exhaust port is located at one end of the tundish cover, and the molten steel injection hole is used for being communicated with a liquid outlet of a steel ladle; the inert gas spray head is arranged at the other end of the ladle cover, and the outlet end of the inert gas spray head is located in the ladle body and used for spraying inert gas into the ladle body. According to the technical scheme, the technical problems that in the related technology, molten steel is in direct contact with air during pouring of the tundish, the liquidity of the molten steel is affected, the molten steel is oxidized, inclusions in steel are increased, and the product quality is affected are solved.

Description

TECHNICAL FIELD

[0001] Embodiments of the present disclosure relate to the technical field of tundish, in particular, to a tundish with a blowing function. BACKGROUND

[0002] In the process of continuous casting of molten steel, the tundish is an important transitional container for storing molten steel, which can reduce the static pressure of molten steel, stabilize the injection flow, help the inclusion float, and play a role in purifying molten steel. When the tundish is opened, the tundish is filled with air, and the ladle injects the bare molten steel into the tundish, so that the molten steel directly contacts the air, which affects the flowability of the molten steel, increases the inclusions in the molten steel due to oxidation of the molten steel, and affects the quality of the product. CONTENT

[0003] To overcome the above defects, embodiments of the present disclosure provide a tundish with a blowing function, which solves the technical problem that in the related art, when the tundish is opened, the molten steel directly contacts the air, which affects the flowability of the molten steel, increases the inclusions in the molten steel due to oxidation of the molten steel, and affects the quality of the product.

[0004] According to one aspect, at least one embodiment of the present disclosure provides a tundish with a blowing function, comprising,

[0005] a tundish body,

[0006] a tundish cover, the tundish cover is sealingly arranged on the tundish body, the tundish cover has an exhaust port and a molten steel injection hole, the exhaust port is located at one end of the tundish cover, and the molten steel injection hole is used to communicate with a liquid outlet of a ladle;

[0007] an inert gas nozzle, the inert gas nozzle is arranged at the other end of the tundish cover, the outlet end of the inert gas nozzle is located in the tundish body, and the inert gas nozzle is used to spray inert gas into the tundish body.

[0008] For example, in the tundish with a blowing function provided by at least one embodiment of the present disclosure, the tundish with a blowing function further comprises an inert gas pipe, the inert gas pipe is arranged on the tundish cover and located at the end of the tundish cover away from the exhaust port, the inlet of the inert gas nozzle communicates with the inert gas pipe, the number of the inert gas nozzles is multiple, and all the inert gas nozzles are arranged along the length direction of the inert gas pipe.

[0009] For example, the intermediate ladle with the blowing function provided by at least one embodiment of the present disclosure further comprises a plurality of inert gas blowing joints, the inlet end of each of the inert gas blowing joints is configured to be in communication with the inert gas source, and the outlet end of each of the inert gas blowing joints is in communication with the inert gas pipe.

[0010] For example, the intermediate ladle with the blowing function provided by at least one embodiment of the present disclosure further comprises a flow regulating valve, the inlet end of the flow regulating valve is configured to be in communication with the inert gas source, and the outlet end of the flow regulating valve is in communication with the inlet end of the inert gas blowing joint.

[0011] For example, the intermediate ladle with the blowing function provided by at least one embodiment of the present disclosure further comprises a three-way valve, the first port of the three-way valve is configured to be in communication with the inert gas source, the second port of the three-way valve is in communication with the inlet end of the flow regulating valve, and the third port of the three-way valve is configured to be in communication with the oxygen source.

[0012] For example, the intermediate ladle with the blowing function provided by at least one embodiment of the present disclosure further comprises a three-way valve, the first port of the three-way valve is configured to be in communication with the inert gas source, the second port of the three-way valve is in communication with the inlet end of the flow regulating valve, and the third port of the three-way valve is configured to be in communication with the oxygen source.

[0013] For example, the intermediate ladle with the blowing function provided by at least one embodiment of the present disclosure further comprises a three-way valve, the first port of the three-way valve is configured to be in communication with the inert gas source, the second port of the three-way valve is in communication with the inlet end of the flow regulating valve, and the third port of the three-way valve is configured to be in communication with the oxygen source.

[0014] For example, the intermediate ladle with the blowing function provided by at least one embodiment of the present disclosure further comprises an impact pad, the impact pad is arranged at the bottom of the ladle body and below the molten steel injection hole, and the impact pad is detachably connected with the ladle body.

[0015] For example, the intermediate ladle with the blowing function provided by at least one embodiment of the present disclosure further comprises a three-way valve, the first port of the three-way valve is configured to be in communication with the inert gas source, the second port of the three-way valve is in communication with the inlet end of the flow regulating valve, and the third port of the three-way valve is configured to be in communication with the oxygen source.

[0016] For example, the intermediate ladle with the blowing function provided by at least one embodiment of the present disclosure further comprises a three-way valve, the first port of the three-way valve is configured to be in communication with the inert gas source, the second port of the three-way valve is in communication with the inlet end of the flow regulating valve, and the third port of the three-way valve is configured to be in communication with the oxygen source.

[0017] A lower baffle plate is disposed within the package body. The bottom of the lower baffle plate is sealed to the package body. The top surface of the lower baffle plate is located between the top and bottom surfaces of the upper baffle plate. It is used to divide the liquid storage chamber into a first chamber and a second chamber. The first chamber is located between the scum chamber and the second chamber.

[0018] For example, in at least one embodiment of this disclosure, an intermediate package with an air blowing function is provided, the intermediate package with an air blowing function further includes,

[0019] A connecting pipe, one end of which is connected to the molten steel injection hole, and an exhaust pipe on the side wall of the other end of the connecting pipe;

[0020] A connecting valve, one end of which is connected to the other end of the connecting pipe, and the other end of which is used to connect to the outlet of the ladle;

[0021] An exhaust valve is provided on the exhaust pipe.

[0022] The beneficial effects of the embodiments disclosed herein are as follows: Before casting begins in the tundish, the tundish is filled with air. The inlet end of the inert gas nozzle is connected to an inert gas source, allowing inert gas (e.g., argon) to be injected into one end of the ladle. As the inert gas is continuously injected, the air inside the ladle is gradually discharged through the vent at the other end of the ladle cover, forming an inert gas protective atmosphere within the ladle. Then, the molten steel injection hole is connected to the outlet of the ladle. When molten steel is injected from the ladle into the tundish, the molten steel enters the tundish through the injection hole. Since an inert gas protective atmosphere has already been formed inside the ladle, the molten steel will not directly contact a large amount of air during injection, reducing the adverse effects of oxygen and other components in the air on the molten steel. The fluidity of the molten steel is more stable, which helps the subsequent continuous casting process proceed smoothly, ensuring the continuity and stability of continuous casting production. It can also reduce the oxidation degree of the molten steel, thereby reducing the formation of inclusions in the steel and improving the purity of the molten steel. In subsequent processing and use, the performance of the steel is more stable and reliable, improving product quality. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0024] Figure 1 This is a front view of one embodiment of the present disclosure;

[0025] Figure 2 This is a top view of one embodiment of the present disclosure;

[0026] Figure 3 This is a schematic diagram of the structure of the package body in one direction in one embodiment of the present disclosure;

[0027] Figure 4 This is a top view of the package body in one embodiment of this disclosure.

[0028] In the diagram: 1. Ladle body, 2. Ladle cover, 3. Inert gas nozzle, 4. Exhaust port, 5. Molten steel injection hole, 6. Inert gas pipe, 7. Inert gas inlet connector, 8. Flow regulating valve, 9. Three-way valve, 10. Insert plate, 11. Impact pad, 12. Upper slag baffle plate, 13. Lower slag baffle plate, 14. Connecting pipe, 15. Connecting valve, 16. Exhaust valve, 17. Exhaust pipe, 18. Slag chamber, 19. Liquid storage chamber, 19-1. First chamber, 19-2. Second chamber, 20. Lifting ring, 21. Slag discharge port. Detailed Implementation

[0029] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0030] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0031] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0032] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0034] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] like Figures 1-2 As shown, an intermediate ladle with a blowing function is illustrated in one embodiment of the present disclosure. It includes a ladle body 1, a ladle cover 2, and an inert gas nozzle 3. The ladle cover 2 is sealed on the ladle body 1 and has an exhaust port 4 and a molten steel injection hole 5. The exhaust port 4 is located at one end of the ladle cover 2, and the molten steel injection hole 5 is used to communicate with the outlet of the ladle. The inert gas nozzle 3 is located at the other end of the ladle cover 2, and the outlet end of the inert gas nozzle 3 is located inside the ladle body 1 for spraying inert gas into the ladle body 1.

[0036] In this disclosure, taking the case where the length of the tundish body 1 is arranged along the front-to-back direction, the inert gas pipe 6 is located at the front end of the cover 2, the exhaust port 4 is located at the rear end of the cover 2, and the outlet of the inert gas nozzle 3 faces downwards. The cover 2 is made of castable refractory and steel structure. Before the tundish is poured, the tundish is filled with air. The inlet end of the inert gas nozzle 3 is connected to the inert gas source, so that inert gas (such as argon) can be injected into one end of the tundish body 1 through the inert gas nozzle 3. As the inert gas is continuously injected, the air in the tundish body 1 is gradually discharged from the exhaust port 4 at the other end of the cover 2, forming an inert gas protective atmosphere inside the tundish body 1. Then, the molten steel injection hole 5 is connected to the outlet of the ladle. When the ladle injects molten steel into the tundish, the molten steel enters the tundish through the molten steel injection hole 5. Since an inert gas protective atmosphere has been formed inside the ladle body 1 at this time, the molten steel will not directly contact a large amount of air during the injection process as before. This reduces the adverse effects of oxygen and other components in the air on the molten steel, making the molten steel more fluid and facilitating the smooth progress of the subsequent continuous casting process, ensuring the continuity and stability of continuous casting production. It can also reduce the degree of oxidation of the molten steel, thereby reducing the formation of inclusions in the steel and improving the purity of the molten steel. In subsequent processing and use, the performance of the steel is more stable and reliable, which can improve product quality.

[0037] In some examples, an intermediate bag with a blowing function also includes an inert gas tube 6, which is disposed on the bag cover 2 and located at the end of the bag cover 2 away from the exhaust port 4. The inlet of the inert gas nozzle 3 is connected to the inert gas tube 6. There are multiple inert gas nozzles 3, and all the inert gas nozzles 3 are arranged along the length of the inert gas tube 6.

[0038] For example, such as Figure 1 and Figure 2 As shown, the length of the inert gas pipe 6 is arranged along the width of the ladle body 1, i.e., along the left and right direction. Multiple inert gas nozzles 3 are arranged along the length of the inert gas pipe 6, so that the inert gas can be sprayed from different positions inside the tundish. This can expand the coverage of the inert gas, more comprehensively expel the air inside the tundish, and make the distribution of the inert gas inside the tundish more uniform. This can more effectively isolate the molten steel from the air, reduce the oxidation of the molten steel and the formation of inclusions, and improve the quality of the molten steel.

[0039] In some examples, an intermediate package with a blowing function also includes an inert gas inlet connector 7, the inlet end of which is connected to an inert gas source, and the outlet end of which is connected to an inert gas pipe 6. There are multiple inert gas inlet connectors 7, and all the inert gas inlet connectors 7 are arranged along the length of the inert gas pipe 6.

[0040] For example, such as Figure 1 andFigure 2 As shown, multiple inert gas inlet connectors 7 are arranged along the length of the inert gas tube 6. The inlet end of the inert gas inlet connector 7 is connected to the inert gas source, so that inert gas (such as argon) can enter the inert gas tube 6 through the inert gas inlet connector 7, and then be sprayed into one end of the package 1 by the inert gas nozzle 3. Inert gas can be injected into the inert gas tube 6 from multiple positions at the same time, so that the inert gas can be more evenly distributed in the inert gas tube 6, and then sprayed into the intermediate package more evenly by the inert gas nozzle 3.

[0041] In some examples, an intermediate package with a blowing function also includes a flow control valve 8, the inlet of which is connected to an inert gas source, and the outlet of which is connected to the inlet of an inert gas blowing connector 7.

[0042] For example, such as Figure 1 As shown, the flow regulating valve 8 can be used to adjust the flow rate of inert gas entering the inert gas blowing joint 7 according to actual production needs, so as to achieve precise control of the inert gas flow rate. This can not only meet the inert gas flow rate requirements of different production stages, but also save the amount of inert gas used and reduce production costs while ensuring the quality of molten steel.

[0043] In some examples, an intermediate package with a blowing function also includes a three-way valve 9, the first port of which is connected to an inert gas source, the second port of which is connected to the inlet of a flow regulating valve 8, and the third port of which is connected to an oxygen source.

[0044] For example, such as Figure 1 As shown, the three-way valve 9 allows the system to switch between inert gas and oxygen. Before pouring from the tundish, inert gas is used to purge the air from the tundish, creating an inert gas protective atmosphere. During emergency ladle heating, oxygen is blown into the tundish through the three-way valve 9 for rapid heating. This increases the system's flexibility and versatility, meeting the needs of different production processes and operations, and improving the tundish's efficiency and adaptability.

[0045] In some examples, the inert gas tube 6 is located inside the cover 2.

[0046] For example, such as Figure 1As shown, placing the inert gas pipe 6 inside the tundish cover 2 protects it from damage, extends its service life, reduces maintenance costs and downtime, and ensures a stable and reliable delivery of inert gas to the inert gas nozzle 3. This guarantees the formation of a stable inert gas protective atmosphere within the tundish and also makes the tundish's appearance cleaner. The tundish cover 2 is constructed from a casting layer and a steel structure, with the steel structure located inside the casting layer. The inert gas pipe 6 is mounted on the steel structure for easy casting.

[0047] In some examples, the lower end face of the cover 2 has a slot, and an intermediate bag with an air blowing function also includes an insert plate 10, which is disposed on the upper end face of the bag body 1 and is inserted into the slot on the cover 2.

[0048] For example, such as Figure 3 and Figure 4 As shown, the connection between the cover 2 and the bag body 1 can be achieved through the insertion and engagement of the insert plate 10 and the slot. When maintenance, cleaning, or repair of the intermediate bag is required, the cover 2 can be removed and reinstalled after the operation is completed. The structure is simple, and the disassembly and assembly are convenient and quick, saving time and effort. It facilitates daily maintenance and repair work, reduces maintenance time and workload, and ensures the tightness of the connection between the cover 2 and the bag body 1, preventing gas leakage and other problems during the operation of the intermediate bag.

[0049] In some examples, an impact pad 11 is also included, which is disposed at the bottom inside the package 1 and below the molten steel injection hole 5. The impact pad 11 is detachably connected to the package 1.

[0050] For example, such as Figure 1 , Figure 2 and Figure 4 As shown, when molten steel in the ladle is injected into the tundish through the molten steel injection hole 5, it will generate a large impact force on the bottom of the tundish. The impact pad 11 can buffer the impact force of the molten steel, reduce wear on the bottom of the tundish, extend the service life of the tundish, reduce the frequency of tundish damage and replacement due to bottom wear, and lower production costs. The impact pad 11 is detachable, allowing for easy removal and replacement when it wears to a certain extent.

[0051] In some examples, an upper baffle plate 12 and a lower baffle plate 13 are also included. The upper baffle plate 12 is disposed inside the ladle body 1 and is used to divide the interior of the ladle body 1 into a slag chamber 18 and a liquid storage chamber 19. A liquid passage is left between the bottom of the upper baffle plate 12 and the ladle body 1, and the molten steel injection hole 5 is located above the slag chamber 18. The lower baffle plate 13 is disposed inside the ladle body 1 and is sealed to the bottom of the ladle body 1. The top surface of the lower baffle plate 13 is located between the top and bottom surfaces of the upper baffle plate 12 and is used to divide the liquid storage chamber 19 into a first chamber 19-1 and a second chamber 19-2. The first chamber 19-1 is located between the slag chamber 18 and the second chamber 19-2.

[0052] For example, such as Figure 1 , Figure 2 and Figure 4 As shown, taking the molten steel injection hole 5 located on the left side of the ladle cover 2 as an example, the molten steel injection hole 5, the upper baffle plate 12, and the lower baffle plate 13 are arranged sequentially from left to right, dividing the interior of the ladle body 1 into three chambers arranged sequentially from left to right: a slag chamber 18, a first chamber 19-1, and a second chamber 19-2. After the molten steel enters the slag chamber through the molten steel injection hole 5, due to the action of the upper baffle plate 12, the less dense slag will remain in the slag chamber, while the molten steel enters the liquid storage chamber 19 through the liquid passage at the bottom of the upper baffle plate 12. As long as the liquid level in the ladle body 1 is above the lower end face of the upper baffle plate 12, the slag cannot enter the liquid storage chamber 19. When the liquid level in the ladle body 1 is below the lower end face of the upper baffle plate 12, the slag can only enter the first chamber 19-1 and cannot cross the lower baffle plate 13 to enter the second chamber 19-2. This effectively separates the slag in the molten steel, helping to improve the purity of the molten steel.

[0053] The side wall of the package 1 has a slag discharge port 21 at the position corresponding to the slag cavity. When slag discharge is not required, the slag discharge port 21 can be blocked with a sealing plate. When slag discharge is required, the sealing plate can be removed. This does not affect the use of inert gas to discharge air and facilitates slag discharge.

[0054] In some examples, a connecting pipe 14, a connecting valve 15, and an exhaust valve 16 are also included. One end of the connecting pipe 14 is connected to the molten steel injection hole 5, and an exhaust pipe 17 is provided on the side wall of the other end of the connecting pipe 14. One end of the connecting valve 15 is connected to the other end of the connecting pipe 14, and the other end of the connecting valve 15 is used to connect to the outlet of the ladle. The exhaust valve 16 is provided on the exhaust pipe 17.

[0055] For example, such as Figure 1As shown, connecting pipe 14 and connecting valve 15 are used to connect the outlet of the ladle and the molten steel injection port 5 of the tundish, realizing the transfer of molten steel. During the connection process, air may remain in connecting pipe 14. When inert gas is blown into the tundish, connecting valve 15 is closed and exhaust valve 16 is opened to expel the air from connecting pipe 14. When molten steel needs to be injected into ladle 1, exhaust valve 16 is closed and connecting valve 15 is opened. This further reduces the chance of molten steel coming into contact with air, thereby improving the quality of the molten steel.

[0056] In some examples, three hanging rings 20 are also included, which are set on the cover 2 and arranged in a triangular pattern.

[0057] For example, such as Figure 2 As shown, the lifting rings 20 facilitate the hoisting and handling of the cover 2, reducing the difficulty and labor intensity of manual operation while ensuring safety during operation and preventing damage to the cover 2 or injury to personnel due to improper handling. The triangular structure formed by the three lifting rings 20 in the middle of the cover 2 defines a plane. When the cover 2 is hoisted through these three lifting rings 20, it helps to keep the cover 2 balanced, preventing the cover 2 from tilting and swaying due to a shift in the center of gravity.

[0058] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. An intermediate package with an air blowing function, characterized in that: include, Inclusion body (1), A ladle cover (2) is sealed on the ladle body (1). The ladle cover (2) has an exhaust port (4) and a molten steel injection hole (5). The exhaust port (4) is located at one end of the ladle cover (2). The molten steel injection hole (5) is used to communicate with the outlet of the ladle. An inert gas nozzle (3) is provided at the other end of the cover (2), and the outlet end of the inert gas nozzle (3) is located inside the package (1) for spraying inert gas into the package (1).

2. The intermediate package with air blowing function according to claim 1, characterized in that: The intermediate package with blowing function also includes an inert gas tube (6), which is disposed on the package cover (2) and located at the end of the package cover (2) away from the exhaust port (4). The inlet of the inert gas nozzle (3) is connected to the inert gas tube (6). There are multiple inert gas nozzles (3), and all the inert gas nozzles (3) are arranged along the length direction of the inert gas tube (6).

3. The intermediate package with air blowing function according to claim 2, characterized in that: The intermediate package with blowing function also includes an inert gas blowing connector (7). The inlet end of the inert gas blowing connector (7) is used to connect with an inert gas source, and the outlet end of the inert gas blowing connector (7) is connected with the inert gas pipe (6). There are multiple inert gas blowing connectors (7), and all the inert gas blowing connectors (7) are arranged along the length direction of the inert gas pipe (6).

4. The intermediate package with air blowing function according to claim 3, characterized in that: The intermediate package with blowing function also includes a flow regulating valve (8), the inlet end of which is connected to the inert gas source, and the outlet end of which is connected to the inlet end of the inert gas blowing connector (7).

5. An intermediate package with an air blowing function according to claim 4, characterized in that: The intermediate package with blowing function also includes a three-way valve (9), the first port of which is connected to the inert gas source, the second port of which is connected to the inlet end of the flow regulating valve (8), and the third port of which is connected to the oxygen source.

6. An intermediate package with an air blowing function according to claim 2, characterized in that: The inert gas tube (6) is disposed inside the cover (2).

7. An intermediate package with an air blowing function according to claim 1, characterized in that: The lower end face of the cover (2) has a slot, and the intermediate bag with blowing function also includes a insert plate (10). The insert plate (10) is disposed on the upper end face of the bag body (1), and the insert plate (10) is inserted into the slot on the cover (2).

8. An intermediate package with an air blowing function according to claim 1, characterized in that: The intermediate ladle with air blowing function also includes an impact pad (11), which is located at the bottom of the ladle body (1) and below the molten steel injection hole (5). The impact pad (11) and the ladle body (1) are detachably connected.

9. An intermediate package with an air blowing function according to claim 1, characterized in that: The intermediate package with air blowing function also includes Upper slag baffle (12) is disposed inside the package (1) to divide the interior of the package (1) into a slag cavity (18) and a liquid storage cavity (19). A liquid passage is left between the bottom of the upper slag baffle (12) and the package (1). The molten steel injection hole (5) is located above the slag cavity (18). The lower baffle plate (13) is disposed inside the package (1). The bottom of the lower baffle plate (13) is sealed to the package (1). The top surface of the lower baffle plate (13) is located between the top and bottom surfaces of the upper baffle plate (12) and is used to divide the liquid storage chamber (19) into a first chamber (19-1) and a second chamber (19-2). The first chamber (19-1) is located between the scum chamber (18) and the second chamber (19-2).

10. An intermediate package with an air blowing function according to claim 1, characterized in that: The intermediate package with air blowing function also includes A connecting pipe (14) is provided, one end of which is connected to the molten steel injection hole (5), and the other end of the connecting pipe (14) has an exhaust pipe (17) on its side wall. A connecting valve (15) is provided, one end of which is connected to the other end of the connecting pipe (14), and the other end of which is used to connect to the outlet of the ladle. An exhaust valve (16) is provided on the exhaust pipe (17).

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