A ladle titanium iron feeding device

Abstract

This application provides a ladle ferro-titanium feeding device, relating to the field of feeding technology. It includes a receiving pipe, with a chute connected to the lower end of the receiving pipe. The lower end of the chute is connected to a vertical feeding pipe via an air jet assembly. The air jet assembly includes an annular air jet box and an air delivery pipe. The top of the annular air jet box is connected to the lower end of the chute, and the bottom of the annular air jet box is connected to the upper end of the vertical feeding pipe. An annular nozzle is provided inside the annular air jet box, tilted downwards. One bottom side of the annular nozzle is in close contact with the inner wall of the vertical feeding pipe. One end of the air delivery pipe is connected to the annular air jet box. This invention, through the air jet assembly, sprays a protective gas film layer onto the inner wall of the vertical feeding pipe. When ferro-titanium enters the vertical feeding pipe, it reduces the direct contact between ferro-titanium particles and the pipe wall, effectively reducing the impact and friction of ferro-titanium particles on the inner wall of the vertical feeding pipe, reducing pipe wall wear, and extending the service life of the vertical feeding pipe.

Description

Technical Field

[0001] This application relates to the field of feeding technology, and more specifically, to a ladle ferrotitanium feeding device. Background Technology

[0002] In the field of steel smelting, the addition of ferrotitanium to the ladle for alloying before leaving the LF refining station is a key process step in the production of titanium-containing steel.

[0003] Chinese Patent CN213977771U discloses a ladle ferrotitanium (FIT) adding device, including a furnace rear platform, a feeding mechanism for adding FIT, a ladle, a ladle car, and a track. The ladle car is mounted on the track and runs along the track. The ladle is placed on the ladle car. The furnace rear platform is located above the ladle car. The feeding mechanism is located on the furnace rear platform, which is made of steel. The vertical feeding pipe of the feeding mechanism is directly facing the exposed area of ​​molten steel blown open by argon gas. FIT can be directly added to the deep part of the molten steel under the action of large gravitational potential energy through the receiving pipe, the inclined chute, and the vertical feeding pipe of the feeding mechanism, without contacting the steel slag. This results in less titanium loss and oxidation, and a high titanium recovery rate.

[0004] However, the vertical feeding pipe in the above-mentioned device is in a harsh environment of high temperature and high dust for a long time. It not only has to withstand the heat radiation from the high temperature of molten steel in the ladle, but also has to face the high-speed scouring of ferro-titanium particles during the feeding process. The ferro-titanium particles fall from the vertical feeding pipe under the action of gravity. Due to the high hardness of the particles and the high falling speed, they will continuously impact and rub against the inner wall of the vertical feeding pipe, causing wear on the pipe wall and reducing the service life of the vertical feeding pipe. Summary of the Invention

[0005] The purpose of this application is to provide a steel ladle ferro-titanium feeding device, which can solve the technical problems mentioned in the background art.

[0006] This application provides a ladle ferrotitanium feeding device, including a receiving pipe, a chute connected to the lower end of the receiving pipe, and a vertical feeding pipe connected to the lower end of the chute via an air jet assembly. The air jet assembly includes an annular air jet box and an air delivery pipe. The top of the annular air jet box is connected to the lower end of the chute, and the bottom of the annular air jet box is connected to the upper end of the vertical feeding pipe. An annular nozzle is provided on the inner side of the annular air jet box. The annular nozzle is inclined downwards, and one bottom side of the annular nozzle is closely attached to the inner wall of the vertical feeding pipe. One end of the air delivery pipe is connected to the annular air jet box.

[0007] Furthermore, the receiving pipe, the chute, and the vertical feeding pipe are all equipped with inner liners, which are made of corundum ceramic.

[0008] Furthermore, the annular jet box and the chute are integrally formed, and the annular jet box is detachably connected to the vertical feeding pipe.

[0009] Furthermore, a connecting cylinder is fixedly provided at the bottom of the annular jet box, the upper end of the vertical feeding pipe is inserted into the connecting cylinder, and locking components for locking the vertical feeding pipe are symmetrically arranged on the outer side of the connecting cylinder.

[0010] Furthermore, the locking assembly includes a connecting seat, a hook, and a locking bolt. The connecting seat is fixed on the connecting cylinder. The upper end of the hook is provided with a rotating shaft. The hook is rotatably connected to the connecting seat through the rotating shaft. The hook is provided with a through hole adapted to the locking bolt. The connecting seat is provided with a threaded hole adapted to the locking bolt. The locking bolt passes through the through hole and is threadedly connected to the connecting seat through the threaded hole. The upper outer side of the vertical feeding tube is integrally formed with a protruding ring for the hook to catch.

[0011] Furthermore, multiple reinforcing ribs are uniformly fixed at the connection between the connecting cylinder and the annular jet box.

[0012] Furthermore, it also includes a fixed base, on which the chute is fixed.

[0013] The beneficial effects of this utility model are:

[0014] This invention utilizes an air jet assembly to spray a protective gas film onto the inner wall of the vertical feeding pipe, thereby reducing the impact of heat radiation on the inner wall of the vertical feeding pipe. When ferrotitanium enters the vertical feeding pipe, it reduces the direct contact between ferrotitanium particles and the pipe wall, effectively reducing the impact and friction of ferrotitanium particles on the inner wall of the vertical feeding pipe, reducing pipe wall wear, and extending the service life of the vertical feeding pipe. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 These are schematic diagrams of structures in some embodiments of this application;

[0017] Figure 2 These are cross-sectional views of some embodiments of this application;

[0018] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle;

[0019] The reference numerals in the attached figures are as follows:

[0020] 1. Receiving pipe; 2. Inclined chute; 3. Air jet assembly; 31. Annular air jet box; 312. Annular nozzle; 32. Air delivery pipe; 4. Vertical feeding pipe; 41. Convex ring; 5. Liner; 6. Connecting cylinder; 7. Locking assembly; 71. Connecting seat; 711. Threaded hole; 72. Hook; 721. Rotating shaft; 722. Through hole; 73. Locking bolt; 8. Reinforcing rib; 9. Fixing seat. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0026] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Specific implementation examples:

[0028] like Figure 1-3 As shown, this application provides a ladle ferrotitanium feeding device, including a receiving pipe 1, a chute 2 connected to the lower end of the receiving pipe 1, and a vertical feeding pipe 4 connected to the lower end of the chute 2 via an air jet assembly 3. The air jet assembly 3 includes an annular air jet box 31 and an air delivery pipe 32. The top of the annular air jet box 31 is connected to the lower end of the chute 2, and the bottom of the annular air jet box 31 is connected to the upper end of the vertical feeding pipe 4. An annular nozzle 312 is provided on the inner side of the annular air jet box 31. The annular nozzle 312 is inclined downwards, and one side of the bottom of the annular nozzle 312 is closely attached to the inner wall of the vertical feeding pipe 4. One end of the air delivery pipe 32 is connected to the annular air jet box 31. In use, the end of the air delivery pipe 32 away from the annular air jet box 31 is connected. A high-pressure gas source (argon) is connected, and the high-pressure gas is input into the annular jet box 31 through the gas supply pipe 32. The high-pressure gas is sprayed into the vertical feeding pipe 4 through the annular nozzle 312 to form a continuous annular airflow. The annular airflow forms a protective gas film layer in the vertical feeding pipe 4, and the airflow can reduce the heat radiation effect on the inner wall of the vertical feeding pipe 4. When the titanium iron particles enter from the receiving pipe 1, they slide down the inclined chute 2 under the action of gravity, and then pass through the jet assembly 3 to enter the vertical feeding pipe 4. Under the protection of the annular airflow, the direct contact between the titanium iron particles and the pipe wall can be reduced, effectively reducing the impact and friction of the titanium iron particles on the inner wall of the vertical feeding pipe 4, reducing pipe wall wear, and extending the service life of the vertical feeding pipe 4.

[0029] like Figure 2 and Figure 3 As shown, the receiving pipe 1, the inclined chute 2, and the vertical feeding pipe 4 are all equipped with inner liners 5. The inner liners 5 are made of corundum ceramic. Corundum ceramic has high hardness and can withstand the high-frequency impact of titanium-iron particles, avoiding direct contact between titanium-iron particles and the pipe wall, which would cause wear. In addition, the ceramic surface is smooth, which can reduce the resistance to material flow and reduce jamming and material accumulation.

[0030] like Figures 1-3As shown, the annular jet box 31 and the chute 2 are integrally formed, which enhances the stability of the connection between the annular jet box 31 and the chute 2. The annular jet box 31 and the vertical feeding pipe 4 are detachably connected. After long-term use, the wear of the vertical feeding pipe 4 is inevitable. The detachable connection makes it easy to replace the worn vertical feeding pipe 4.

[0031] like Figure 1-3 As shown, a connecting cylinder 6 is fixedly installed at the bottom of the annular jet box 31, and the upper end of the vertical feeding pipe 4 is inserted into the connecting cylinder 6. This allows for quick initial positioning and installation of the two components, improving assembly efficiency. A locking assembly 7 is symmetrically arranged on the outer side of the connecting cylinder 6 to lock the vertical feeding pipe 4. This securely locks the vertical feeding pipe 4 within the connecting cylinder 6, ensuring a stable connection between the annular jet box 31 and the vertical feeding pipe 4. This prevents loosening or detachment during use, ensuring the stability and safety of the equipment operation.

[0032] like Figure 1-3 As shown, the locking assembly 7 includes a connecting seat 71, a hook 72, and a locking bolt 73. The connecting seat 71 is fixed to the connecting cylinder 6. The upper end of the hook 72 is provided with a rotating shaft 721. The hook 72 is rotatably connected to the connecting seat 71 through the rotating shaft 721. The hook 72 is provided with a through hole 722 that matches the locking bolt 73. The connecting seat 71 is provided with a threaded hole 711 that matches the locking bolt 73. The locking bolt 73 passes through the through hole 722 and is threadedly connected to the connecting seat 71 through the threaded hole 711. The upper outer side of the vertical feeding tube 4 is integrally formed with a protruding ring 41 for the hook 72 to hook. After the upper end of the vertical feeding tube 4 is inserted into the connecting cylinder 6, the hook 72... By rotating the shaft 721 around the connecting seat 71, the opening at the lower end of the hook 72 is aligned with the convex ring 41 on the outside of the vertical feeding tube 4 and hooks the convex ring 41. The locking bolt 73 is passed through the through hole 722 on the hook 72 and screwed into the threaded hole 711 of the connecting seat 71. The axial tension generated by the threaded engagement secures the hook 72 to the connecting seat 71. Furthermore, the hook 72 pulls on the convex ring 41, firmly locking the vertical feeding tube 4 inside the connecting cylinder 6. When the vertical feeding tube 4 needs to be replaced, simply loosen the locking bolt 73 and rotate the hook 72 to quickly disassemble the vertical feeding tube 4, reducing downtime and improving the convenience of equipment maintenance.

[0033] like Figure 1 and Figure 3 As shown, multiple reinforcing ribs 8 are uniformly fixed at the connection between the connecting cylinder 6 and the annular jet box 31. The connection between the connecting cylinder 6 and the annular jet box 31 is strengthened by the setting of the reinforcing ribs 8, thereby improving the structural stability of the connecting cylinder 6 and the annular jet box 31.

[0034] like Figure 1-3As shown, the steel ladle ferro-titanium feeding device of this application also includes a fixed base 9, and the chute 2 is fixed on the fixed base 9. The fixed base 9 provides a rigid support foundation for the chute 2. By fixing the chute 2 on the fixed base 9, the position of the chute 2 is fixed. Specifically, the fixed base 9 is provided with multiple mounting holes. In use, the fixed base 9 is fixed in a suitable position by the cooperation of bolts and nuts, thereby fixing the entire structure.

[0035] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A ladle ferrotitanium charging device, characterized in that: The device includes a receiving pipe, the lower end of which is connected to a chute. The lower end of the chute is connected to a vertical feeding pipe via an air jet assembly. The air jet assembly includes an annular air jet box and an air delivery pipe. The top of the annular air jet box is connected to the lower end of the chute, and the bottom of the annular air jet box is connected to the upper end of the vertical feeding pipe. An annular nozzle is provided on the inner side of the annular air jet box. The annular nozzle is inclined downwards, and one bottom side of the annular nozzle is closely attached to the inner wall of the vertical feeding pipe. One end of the air delivery pipe is connected to the annular air jet box.

2. The ladle ferrotitanium charging device according to claim 1, characterized in that: The receiving pipe, the chute, and the vertical feeding pipe are all equipped with inner linings made of corundum ceramic.

3. The ladle ferrotitanium charging device according to claim 1, characterized in that: The annular jet box and the inclined chute are integrally formed, and the annular jet box and the vertical feeding pipe are detachably connected.

4. The ladle ferrotitanium charging device according to claim 3, characterized in that: The bottom of the annular jet box is fixedly provided with a connecting cylinder, the upper end of the vertical feeding tube is inserted into the connecting cylinder, and locking components for locking the vertical feeding tube are symmetrically arranged on the outside of the connecting cylinder.

5. The ladle ferrotitanium charging device according to claim 4, characterized in that: The locking assembly includes a connecting seat, a hook, and a locking bolt. The connecting seat is fixed on the connecting cylinder. The upper end of the hook is provided with a rotating shaft. The hook is rotatably connected to the connecting seat through the rotating shaft. The hook is provided with a through hole that matches the locking bolt. The connecting seat is provided with a threaded hole that matches the locking bolt. The locking bolt passes through the through hole and is threadedly connected to the connecting seat through the threaded hole. The upper outer side of the vertical feeding tube is integrally formed with a protruding ring for the hook to catch.

6. The ladle ferrotitanium charging device according to claim 4, characterized in that: Multiple reinforcing ribs are uniformly fixed at the connection between the connecting cylinder and the annular jet box.

7. The ladle ferrotitanium charging device according to claim 1, characterized in that: It also includes a fixed base, on which the chute is fixed.

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