A casting nozzle structure for a casting ladle

Abstract

The utility model relates to a kind of casting ladle mouth structure for casting pipe casting ladle, including ladle mouth (1), the upper end of ladle mouth (1) is equipped with resistance flow structure (2), and ladle mouth (1) includes base (11) and flow guide groove (12), the flow guide groove (12) is equipped in the base (11), and the base (11) is located in the flow guide groove (12) side and is equipped with mounting groove (13), and resistance flow structure (2) includes profiled brick (21), and the profiled brick (21) is clamped in mounting groove (13). Profiled brick (21) cooperation flow guide groove (12) can make the fluctuating molten iron uniform speed, equal amount pass through flow guide groove (12) in the process of casting ladle tipping, and profiled brick (21) can block down the pollutant that molten iron precipitates and floats up, and can effectively improve the product quality of casting pipe. The utility model is simple in structure, easy to produce and manufacture.

Description

Technical Field

[0001] This utility model belongs to the field of casting technology. Specifically, this utility model relates to a casting ladle nozzle structure for casting pipe casting ladle. Background Technology

[0002] For a long time, centrifugal casting of ductile iron pipes has typically required using a ladle to hold molten iron, which is then tilted to allow the molten iron to flow out from the ladle spout and enter the centrifuge for centrifugal casting. Due to the large mass of the ladle, the molten iron fluctuates during the tilting and lifting process, causing instability in the amount of molten iron flowing out of the spout. This instability affects the dimensions and wall thickness uniformity of the formed pipe. Secondly, because molten iron easily forms an oxide layer upon contact with air, oxide slag can rise to the surface during casting and enter the formed pipe, causing quality problems such as slag and iron spillage.

[0003] According to the applicant's search, an improved slag-blocking casting ladle structure disclosed on December 14, 2021, with application number CN202121440749.X, is described. This improved slag-blocking casting ladle structure includes a high-temperature resistant barrel. A spout is provided on one side of the high-temperature resistant barrel, with the top of the spout flush with the top of the barrel. The bottom inner side of the spout is inclined downwards. A molten iron discharge channel communicating with the outside is provided at the top of the spout, with the inner end of the channel inclined downwards. A quickly detachable slag filter assembly is slidably disposed in a groove on the inner wall of the high-temperature resistant barrel near the molten iron discharge channel. A rotating lifting assembly is movably hinged to the outer wall of the high-temperature resistant barrel.

[0004] The improved slag-blocking casting ladle has a relatively complex structure and its effect on blocking the floating oxide layer slag is generally limited. Utility Model Content

[0005] This utility model is designed to solve the above-mentioned problems, and its purpose is to provide a simple casting ladle nozzle structure that can effectively block floating slag in casting pipes. To achieve the above objective, the technical solution adopted by this utility model is as follows: A casting ladle nozzle structure for casting pipes includes a nozzle, wherein a flow-blocking structure is provided at the upper end of the nozzle.

[0006] The nozzle includes a base and a flow guide channel. The flow guide channel is disposed on the base, and an installation groove is provided on one side of the flow guide channel on the base. The flow obstruction structure includes a shaped brick, which is fitted into the installation groove.

[0007] The guide channel is a through channel, extending from one end of the base to the other end.

[0008] The bottom surface of the guide channel is curved.

[0009] The upper end of the mounting groove extends beyond the upper end face of the guide groove.

[0010] The mounting groove has a curved trapezoidal structure, and the surface of the mounting groove near the base is an arc surface.

[0011] The mounting slots are arranged in pairs on both sides of the guide channel.

[0012] The irregularly shaped brick has a curved trapezoidal structure, and the surface of the irregularly shaped brick near the base is an arc surface that matches the bottom surface of the mounting groove.

[0013] Both ends of the irregularly shaped brick are fitted into the mounting groove, and the top surface of the irregularly shaped brick is flush with the top surface of the nozzle.

[0014] The mouthpiece is U-shaped.

[0015] The technical effects of this utility model are as follows: This utility model includes a ladle nozzle, and the upper end of the ladle nozzle is provided with a flow-blocking structure. The ladle nozzle includes a base and a flow-guiding groove. The flow-guiding groove is disposed on the base, and the base has an installation groove on one side of the flow-guiding groove. The flow-blocking structure includes a shaped brick, which is fitted into the installation groove. This utility model uses a shaped brick as a flow-blocking structure. The shaped brick can block the oxide slag floating on the surface of the molten iron, preventing the oxide slag from entering the casting pipe and affecting quality. Due to the large mass of the casting ladle, the molten iron is in a fluctuating state during the tilting and lifting process. The shaped brick can effectively prevent the fluctuating molten iron from entering the casting pipe. The bottom of the flow-guiding groove is arc-shaped, which allows the molten iron to flow more evenly and in equal amounts, making it easier to control the flow rate. The overall structure of this utility model is simple and easy to manufacture. When used with a casting ladle, it allows the fluctuating molten iron to pass through the flow-guiding groove of the ladle nozzle at a uniform speed and in equal amounts during the tilting process, blocking the oxide slag that precipitates and floats to the surface. This improves the uniformity of the wall thickness of the formed pipe and reduces the scrap caused by contaminants. It improved production efficiency and saved costs. Attached Figure Description

[0016] This manual includes the following figures, which illustrate the following: Figure 1 This is a schematic diagram of the overall structure of a casting ladle nozzle for casting pipes according to this utility model; Figure 2 This is a schematic diagram of the main structure of a casting ladle nozzle for casting pipes according to this utility model; Figure 3 This is a schematic diagram of the flow-blocking structure of the casting ladle nozzle for casting pipe casting ladle according to this utility model; The diagram is marked as follows: 1. Nozzle; 11. Base; 12. Guide channel; 13. Mounting slot; 2. Flow-blocking structure; 21. Irregularly shaped brick. Detailed Implementation

[0017] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of this utility model, and to facilitate its implementation.

[0018] like Figure 1 As shown, a casting nozzle structure for a pipe casting ladle includes a nozzle 1, with a flow-blocking structure 2 at the upper end of the nozzle 1. This utility model has a simple overall structure, low manufacturing cost, and is easy to produce.

[0019] like Figure 1 and Figure 2 As shown, the spout 1 includes a base 11 and a flow guide 12. The flow guide 12 is located on the base 11, and an installation groove 13 is provided on one side of the flow guide 12 on the base 11. The flow obstruction structure 2 includes a shaped brick 21, which is fitted into the installation groove 13. Manufacturing the spout 1 and the flow obstruction structure 2 separately can greatly reduce the manufacturing difficulty. The installation groove 13 on one side of the flow guide 12 can improve the installation strength of the shaped brick 21 and prevent the shaped brick 21 from falling off and causing danger when pouring molten iron.

[0020] like Figure 1 and Figure 2 As shown, the guide channel 12 is a through channel, extending from one end of the base 11 to the other. The through channel 12 increases the smoothness of molten iron flow and prevents danger caused by blockage.

[0021] like Figure 1 and Figure 2 As shown, the bottom surface of the guide channel 12 is an arc surface. The arc surface structure of the surface of the guide channel 12 near the base 11 can increase the uniformity of the molten iron flow and prevent the unstable amount of molten iron during the pouring process from affecting the size and wall thickness uniformity of the formed tube.

[0022] like Figure 1 and Figure 2 As shown, the upper end of the mounting groove 13 extends beyond the upper surface of the guide groove 12. The extension of the upper end of the mounting groove 13 to the upper surface of the guide groove 12 facilitates the installation of the irregular bricks 21 and improves production efficiency.

[0023] like Figure 1 and Figure 2 As shown, the mounting groove 13 has a curved trapezoidal structure, and the surface of the mounting groove 13 near the base 11 is an arc surface. The arc surface of the mounting groove 13 near the base 11 can better fit the irregular brick 21 and reduce the gap between the mounting groove 13 and the irregular brick 21.

[0024] like Figure 1 and Figure 2As shown, the mounting slots 13 are arranged in pairs on both sides of the guide channel 12. The pairing of mounting slots 13 can improve the installation strength of the shaped bricks 21, prevent the shaped bricks 21 from falling off under the impact of molten iron and causing danger, and improve the safety of the overall structure.

[0025] like Figure 1 and Figure 3 As shown, the irregular brick 21 has a curved trapezoidal structure, and the surface of the irregular brick 21 near the base 11 is an arc surface that matches the bottom surface of the mounting groove 13. The arc surface of the irregular brick 21 near the base 11 can make the amount of molten iron flowing out through the guide groove 12 more stable, and improve the dimensional consistency and wall thickness uniformity of the formed tube.

[0026] like Figure 2 and Figure 3 As shown, both ends of the shaped brick 21 are fitted into the mounting groove 13, and the top surface of the shaped brick 21 is flush with the top surface of the spout 1. Fitting both ends of the shaped brick 21 into the mounting groove 13 can improve the overall structural installation strength and enhance the reliability of this utility model.

[0027] like Figure 2 As shown, the nozzle 1 is U-shaped. The nozzle 1 has a simple overall structure and is easy to manufacture.

[0028] This utility model relates to a casting ladle nozzle structure for casting pipes, comprising a nozzle 1, with a flow-blocking structure 2 at the upper end of the nozzle 1. The nozzle 1 includes a base 11 and a flow guide 12, the flow guide 12 being disposed on the base 11. An installation groove 13 is provided on one side of the flow guide 12 on the base 11. The flow-blocking structure 2 includes a shaped brick 21, which is fitted into the installation groove 13. Before manufacturing the mold, the tilting angle of various casting ladles and the liquid level height of molten iron passing through the nozzle are analyzed and tracked to design the depth of the flow guide 12 and the dimensions of the shaped brick 21. Using a corresponding molding die, refractory material is added, and the mold is demolded after solidification. The shaped brick 21 is then installed into the pre-reserved installation groove 13 in the flow guide 12 and fixed. Finally, the entire component is installed into the corresponding casting ladle. During production, the ladle tilts as it is lifted by the hydraulic equipment. As the molten iron passes through this invention, the shaped brick 21 ensures that the fluctuating molten iron flows uniformly and in equal amounts through the guide channel 12 during the tilting process. During this process, the shaped brick 21 blocks the oxide slag that rises from the molten iron, preventing the oxide slag layer from entering the forming tube and causing quality problems such as slag and iron overflow. The arc-shaped structure of the lower end face of the shaped brick 21 and the guide channel 12 further increases the uniformity of the molten iron flow. This invention has a simple overall structure, is easy to manufacture, and can effectively improve the production quality of cast pipes.

[0029] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A casting ladle nozzle structure for casting pipes, characterized in that, The device includes a nozzle (1), and the nozzle (1) has a flow-blocking structure (2) at its upper end. The nozzle (1) includes a base (11) and a flow-guiding groove (12). The flow-guiding groove (12) is located on the base (11). The base (11) has an installation groove (13) on one side of the flow-guiding groove (12). The flow-blocking structure (2) includes a shaped brick (21), which is fitted into the installation groove (13).

2. The casting ladle nozzle structure for casting pipes according to claim 1, characterized in that: The guide groove (12) is a through groove, and the guide groove (12) extends from one end of the base (11) to the other end.

3. The casting ladle nozzle structure for casting pipes according to claim 2, characterized in that: The bottom surface of the guide groove (12) is an arc surface.

4. The casting ladle nozzle structure for casting pipes according to claim 1, characterized in that: The upper end of the mounting groove (13) extends out of the upper end face of the guide groove (12).

5. The casting ladle nozzle structure for casting pipes according to claim 4, characterized in that: The mounting groove (13) is a curved trapezoidal structure, and the surface of the mounting groove (13) near the base (11) is an arc surface.

6. The casting ladle nozzle structure for casting pipes according to claim 5, characterized in that: The mounting slots (13) are arranged in pairs on both sides of the guide slot (12).

7. The casting ladle nozzle structure for casting pipes according to claim 1, characterized in that: The irregular brick (21) has a curved trapezoidal structure, and the surface of the irregular brick (21) near the base (11) is an arc surface that matches the bottom surface of the mounting groove (13).

8. The casting ladle nozzle structure for casting pipes according to claim 7, characterized in that: Both ends of the irregular brick (21) are fitted into the mounting groove (13), and the top surface of the irregular brick (21) is flush with the top surface of the nozzle (1).

9. A casting ladle nozzle structure for casting pipes according to any one of claims 1 to 8, characterized in that: The mouthpiece (1) is concave in shape.

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