Steel ladle capable of introducing argon for protection and used for alloy smelting

Abstract

The alloy smelting steel ladle capable of being filled with argon for protection comprises a steel ladle body, an opening and closing valve, a liquid guide ring column, an argon ring and a breather pipe, a discharging port penetrating in the first direction is formed in the bottom of the steel ladle body, the opening and closing valve comprises a base and an opening and closing plate, the base is fixed to the bottom of the steel ladle body, a sliding groove is formed in the base in the second direction, and the opening and closing plate is arranged in the sliding groove. A discharging through hole communicated with the discharging port is formed in the base in the first direction, the end face of the discharging through hole coincides with the end face of the discharging port, the discharging through hole penetrates through the interior of the sliding groove, one end of the opening and closing plate is slidably inserted into the sliding groove, the liquid guide ring column is fixed to the bottom of the base, and a flow guide hole is formed in the liquid guide ring column. The argon ring is annularly arranged on the outer side of the liquid guide ring column, the lowest point of the argon ring is higher than the lower end face of the liquid guide ring column, the argon ring is fixed to the bottom of the base, a plurality of argon outlets are sequentially formed in the side wall of the centripetal side of the argon ring in the annular direction, and one end of the breather pipe is communicated with the side wall of the centrifugal side of the argon ring.

Description

Technical Field

[0001] The utility model belongs to the technical field of metal smelting, in particular to a ladle for alloy smelting which can be protected by argon gas. Background Art

[0002] The ladle is an important device in the metallurgical industry. It is mainly used to receive molten steel from the upstream steelmaking furnace and transport the molten steel to the refining equipment outside the furnace or the continuous casting site for pouring operations.

[0003] Existing ladles mainly use a pouring method to pour molten steel. During pouring, a large amount of air will enter the mold along with the molten steel. Nitrogen in the air easily causes nitrogen increase after entering the molten steel, affecting the quality of the finished steel. Therefore, how to prevent a large amount of air from entering the mold during ladle pouring becomes a problem that needs to be solved. Utility Model Content

[0004] In view of the above technical problems, the utility model provides a ladle for alloy smelting capable of being protected by argon gas, which is used to solve the problem of how to economically and conveniently introduce argon gas into the furnace mouth.

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A ladle for alloy smelting with argon protection, comprising a ladle body, an opening and closing valve, a liquid guide ring column, an argon ring and a vent pipe, a discharge port extending in a first direction is provided at the bottom of the ladle body, the opening and closing valve comprises a base and an opening and closing plate, the base is fixed to the bottom of the ladle body, a chute is provided on the base along a second direction, the first direction is perpendicular to the second direction, a discharge through hole connected to the discharge port is provided on the base along the first direction, and an end face of the discharge through hole coincides with an end face of the discharge port, the discharge through hole passes through the inside of the chute, and the opening One end of the closing plate can be slidably inserted in the slide groove to control the opening and closing of the discharge through hole. The liquid guide ring column is fixed at the bottom of the base. A guide hole is opened inside the liquid guide ring column. The upper end surface of the guide hole coincides with the lower end surface of the discharge through hole. The argon ring is arranged on the outer side of the liquid guide ring column, and the lowest point of the argon ring is higher than the lower end surface of the liquid guide ring column. The argon ring is fixed at the bottom of the base. A plurality of argon gas outlets are opened in sequence along the annular direction on the side wall of the centripetal side of the argon ring. One end of the vent pipe is connected to the side wall of the centrifugal side of the argon ring.

[0007] Optionally, a plurality of argon gas outlets are evenly distributed on the side wall of the centripetal side of the argon gas ring.

[0008] Preferably, the central axis of each argon gas outlet intersects at the ring center and is located on the transverse symmetry plane of the argon gas ring.

[0009] Optionally, the liquid guide ring column is welded and fixed to the bottom of the base.

[0010] Optionally, axial center lines of the liquid-conducting ring column and the argon gas ring along the first direction coincide with each other.

[0011] Optionally, the ladle for alloy smelting further comprises a plurality of supporting feet, which are evenly arranged at the bottom of the ladle body, and the bottom surface of each supporting foot is lower than the lower end surface of the liquid guide ring column.

[0012] Optionally, one end of the ventilation tube is vertically connected to the argon ring toward the center of the argon ring.

[0013] Optionally, the ventilation pipe is a straight round pipe, and the argon ring and the ventilation pipe are connected by welding.

[0014] Optionally, the other end of the vent tube is tapered.

[0015] Optionally, the base is detachably fixed to the bottom of the ladle body by bolts.

[0016] Compared with the prior art, the utility model of the alloy smelting ladle capable of passing argon protection can not only continuously pass argon into the discharge port during pouring to form an argon protection ring, but also facilitates direct connection between the discharge port and the mold inlet, thereby avoiding a large amount of air from entering the mold, effectively preventing nitrogen in the air from entering the molten steel, and well ensuring the quality of the finished steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a ladle for alloy smelting capable of being protected by argon gas in one embodiment of the utility model at one viewing angle;

[0018] Figure 2 This is a schematic structural diagram of an alloy smelting ladle capable of being protected by argon gas in another perspective according to an embodiment of the present invention. DETAILED DESCRIPTION

[0019] In order to provide a further understanding of the purpose, structure, features, and functions of the present invention, the present invention is described in detail below with reference to the embodiments.

[0020] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0021] Please refer to Figure 1 and Figure 2 A ladle 100 for alloy smelting capable of being protected by argon gas comprises a ladle body 1, an opening and closing valve 2, a liquid guide ring column 3, an argon ring 4 and a vent pipe 5.

[0022] A discharge port 11 extending along a first direction X is formed at the bottom of the ladle body 1 .

[0023] The opening and closing valve 2 includes a base 21 and an opening and closing plate 22. The base 21 is fixed to the bottom of the ladle body 1. A slide groove 211 is provided on the base 21 along the second direction Y. The first direction X is perpendicular to the second direction Y. A discharge through hole 212 connected to the discharge port 11 is provided on the base 21 along the first direction X, and the end face of the discharge through hole 212 coincides with the end face of the discharge port 11. The discharge through hole 212 passes through the inside of the slide groove 211. One end of the opening and closing plate 22 can be slidably inserted in the slide groove 211 to control the opening and closing of the discharge through hole 212.

[0024] The liquid guide ring column 3 is fixed at the bottom of the base 21, and a guide hole 31 is opened inside the liquid guide ring column 3, and the upper end surface of the guide hole 31 coincides with the lower end surface of the discharge hole 212. In this way, the liquid guide ring column 3 is conveniently used as a discharge point to directly connect to the mold inlet.

[0025] The argon ring 4 is arranged on the outside of the liquid guide ring column 3, and the lowest point of the argon ring 4 is higher than the lower end surface of the liquid guide ring column 3. The argon ring 4 is fixed to the bottom of the base 21, and a plurality of argon outlets 41 are sequentially opened along the annular direction on the side wall of the centripetal side of the argon ring 4. Argon is an inert gas that can effectively isolate the surrounding air, and it is insoluble in metal and does not react with metal. During pouring, the argon continuously ejected from the argon ring 4 flows downward along the outside of the liquid guide ring column 3, forming an argon protection ring at the liquid guide ring column 3 and the mold feed port, effectively isolating the air and preventing nitrogen from entering the molten steel.

[0026] One end of the ventilation pipe 5 is connected to the side wall of the centrifugal side of the argon ring 4 .

[0027] Optionally, a plurality of argon gas outlets 41 are evenly distributed on the side wall of the centripetal side of the argon gas ring 4. Such an arrangement facilitates balanced gas outlet in the annular direction.

[0028] Preferably, the central axis of each argon gas outlet 41 intersects at the ring center, and is located on the transverse symmetric plane A of the argon gas ring 4. This arrangement makes the argon gas outlet smoother.

[0029] Optionally, the liquid guide ring column 3 is welded and fixed to the bottom of the base 21. In this way, the welding and fixing has better sealing performance.

[0030] Optionally, the axial center lines of the liquid guide ring column 3 and the argon ring 4 along the first direction X coincide with each other. In this way, the argon gas is more balanced.

[0031] Optionally, the alloy smelting ladle 100 further includes a plurality of support legs 6, which are evenly arranged at the bottom of the ladle body 1, and the bottom surface of each support leg 6 is lower than the lower end surface of the liquid guide ring column 3. This arrangement facilitates the placement of the ladle during transportation. In particular, three support legs 6 may be provided.

[0032] Optionally, one end of the vent pipe 5 is vertically connected to the argon ring 4 toward the center of the argon ring 4. In this way, the argon gas can enter the argon ring 4 more smoothly.

[0033] Optionally, the vent pipe 5 is a straight round pipe, and the argon ring 4 and the vent pipe 5 are connected by welding. This arrangement is convenient for connection and has good air tightness.

[0034] Optionally, the other end of the vent pipe 5 is tapered, which makes it easy to connect different air sources through a hose.

[0035] Optionally, the base 21 is detachably fixed to the bottom of the ladle body 1 by bolts. This arrangement facilitates cleaning and maintenance of the opening and closing valve 2 and the discharge port 11.

[0036] The utility model discloses an argon-protected alloy smelting ladle, which can not only continuously introduce argon into the discharge port during pouring to form an argon protection ring, but also facilitates direct connection between the discharge port and the mold inlet, thereby avoiding a large amount of air from entering the mold, effectively preventing nitrogen in the air from entering the molten steel, and well ensuring the quality of the finished steel.

[0037] The present invention has been described by the above-mentioned relevant embodiments, however, the above-mentioned embodiments are only examples for implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, any changes and modifications made without departing from the spirit and scope of the present invention are within the scope of patent protection of the present invention.

Claims

1. A ladle for alloy smelting capable of being protected by argon gas, characterized in that: It includes a ladle body, an opening and closing valve, a liquid guide ring column, an argon ring and a vent pipe; The bottom of the ladle body is provided with a discharge port extending along a first direction; The opening and closing valve comprises a base and an opening and closing plate, the base is fixed to the bottom of the ladle body, a slide groove is provided on the base along the second direction, the first direction is perpendicular to the second direction, a discharge through hole connected to the discharge port is provided on the base along the first direction, and the end face of the discharge through hole coincides with the end face of the discharge port, the discharge through hole passes through the inside of the slide groove, and one end of the opening and closing plate is slidably inserted in the slide groove to control the opening and closing of the discharge through hole; The liquid guide ring column is fixed at the bottom of the base, and a guide hole is opened inside the liquid guide ring column, and the upper end surface of the guide hole coincides with the lower end surface of the discharge through hole; The argon ring is arranged on the outside of the liquid guide ring column, and the lowest point of the argon ring is higher than the lower end surface of the liquid guide ring column. The argon ring is fixed to the bottom of the base, and a plurality of argon outlets are sequentially opened on the side wall of the centripetal side of the argon ring along the annular direction; One end of the ventilation tube is connected to the side wall of the centrifugal side of the argon ring.

2. The alloy smelting ladle capable of being protected by argon gas as claimed in claim 1, characterized in that: The plurality of argon gas outlets are evenly distributed on the side wall of the centripetal side of the argon gas ring.

3. The alloy smelting ladle capable of being protected by argon gas as claimed in claim 2, characterized in that: The central axis of each argon gas outlet intersects at the center of the ring and is located on the transverse symmetry plane of the argon gas ring.

4. The alloy smelting ladle capable of being protected by argon gas as claimed in claim 1, characterized in that: The liquid-conducting ring column is welded and fixed to the bottom of the base.

5. The alloy smelting ladle capable of being protected by argon gas as claimed in claim 1, characterized in that: The axial center lines of the liquid-conducting ring column and the argon ring along the first direction coincide with each other.

6. The alloy smelting ladle capable of being protected by argon gas as claimed in claim 1, characterized in that: It also includes a plurality of supporting feet, which are evenly arranged at the bottom of the ladle body, and the bottom surface of each supporting foot is lower than the lower end surface of the liquid guide ring column.

7. The alloy smelting ladle capable of being protected by argon gas as claimed in claim 1, characterized in that: One end of the ventilation pipe is vertically connected to the argon ring toward the center of the argon ring.

8. The alloy smelting ladle capable of being protected by argon gas as claimed in claim 1, characterized in that: The ventilation pipe is a straight round pipe, and the argon ring and the ventilation pipe are connected by welding.

9. The alloy smelting ladle capable of being protected by argon gas as claimed in claim 1, characterized in that: The other end of the vent pipe is tapered.

10. The alloy smelting ladle capable of being protected by argon gas as claimed in claim 1, characterized in that: The base is detachably fixed to the bottom of the ladle body by bolts.

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