Ladle nozzle filling device

Abstract

The utility model provides a steel ladle nozzle filling device which comprises a fixing table, a fixed pulley, a filling pipe, a steel wire rope and a balancing weight, the fixed pulley is arranged on the fixing table, the two ends of the steel wire rope are both located below the fixing table, one end of the steel wire rope is connected with the upper end of the filling pipe, and the other end of the steel wire rope is connected with the balancing weight. The other end of the steel wire rope bypasses the fixed pulley and then is connected with the balancing weight; the balancing weight is used for adjusting the lifting height of the filler pipe; the lower part of the filling pipe is sleeved with a positioning cylinder; the filler pipe can descend by pulling the filler pipe, and when the lower end of the filler pipe makes contact with the inner wall of the steel ladle nozzle, filler sand can be added into the steel ladle nozzle through the filler pipe. The filling device can ensure that the filling amount of the stuffing sand accurately meets the process standard, a hill-shaped filling form with the high middle and the low periphery is formed in the nozzle after filling is finished, it is guaranteed that the solid stuffing sand smoothly flows out during casting, and the self-opening rate of the ladle nozzle is increased.

Description

Technical Field

[0001] This utility model relates to the field of smelting equipment technology, and in particular to a ladle nozzle packing device. Background Technology

[0002] The ladle nozzle mainly consists of the nozzle seat bricks, the upper nozzle, and the upper slide plate. After hot repair, the central channels of the middle slide plate, lower slide plate, and lower nozzle, as well as the nozzle channel of the ladle nozzle, are misaligned. Before tapping, the nozzle needs to be filled with guiding sand using a packing pipe. The specific process includes: first, moving the ladle car below the packing platform, then lowering the packing pipe and aligning it with the ladle nozzle, adding guiding sand from the top to allow it to flow into the ladle nozzle. During the refining process, the top of the guiding sand undergoes a sintering reaction with the molten steel, forming an upper sintered layer and a lower solid sand layer. A reasonable sintered layer-solid sand layer structure and shape are prerequisites for ensuring automatic pouring of molten steel after the nozzle is opened during ladle pouring, ensuring that the molten steel can flow out automatically during pouring. During pouring, the central channels of the middle slide plate, lower slide plate, and lower nozzle are aligned with the nozzle channel. The solid guiding sand first flows out from the central channels of the lower nozzle and slide plate, and then the molten steel, under static pressure, breaks through the sintered layer of guiding sand and flows out automatically.

[0003] The existing packing tube adopts a flared top and tubular bottom structure, and the packing operation is carried out by adjusting the height with a counterweight. However, the existing packing tube has three main defects: First, the lack of a counterweight at the bottom of the packing tube makes it easy to shake when aligned with the water inlet. At the same time, the counterweight design makes the packing tube prone to rebound, making operation difficult and the alignment accuracy low, and the packing operation inconvenient. Second, due to shaking, the diversion sand is scattered on the top of the water inlet seat brick, reducing the actual amount of diversion sand entering the water inlet, resulting in insufficient sintered layer height, thinning or even disappearing of the solidified sand layer, which seriously affects automatic pouring. Finally, the ideal hill-shaped packing shape becomes a pit or slope due to shaking, resulting in abnormal sintered layer shape and further reducing the stability of pouring. Utility Model Content

[0004] The purpose of this invention is to provide a ladle nozzle filling device. By using this filling device to add guiding sand to the ladle nozzle, it is possible to ensure that the amount of guiding sand filling accurately meets the process standards. The guiding sand can form a reasonable sintered layer-solid sand layer structure in the ladle nozzle, ensuring that the solid guiding sand flows out smoothly during the start-up process and improving the self-opening rate of the ladle nozzle.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A ladle nozzle packing device includes a fixed platform, a fixed pulley, a packing tube, a steel wire rope, and a counterweight. The fixed pulley is mounted on the fixed platform, and both ends of the steel wire rope are located below the fixed platform. One end of the steel wire rope is connected to the upper end of the packing tube, and the other end of the steel wire rope passes around the fixed pulley and is connected to the counterweight. The counterweight is used to adjust the lifting height of the packing tube. A positioning cylinder is fitted onto the lower part of the packing tube. Pulling the packing tube lowers it. When the lower end of the packing tube contacts the inner wall of the ladle nozzle, diversion sand can be added into the ladle nozzle through the packing tube.

[0007] Furthermore, in the above-mentioned ladle nozzle packing device, the ladle nozzle has a nozzle seat brick, the nozzle seat brick is shaped as a hollow truncated cone, the upper end of the nozzle seat brick is the large end, and the lower end of the nozzle seat brick is the small end; the lower end of the packing tube and the lower end of the positioning cylinder are located on the same plane, the outer diameter of the positioning cylinder is smaller than the inner diameter of the upper end of the nozzle seat brick, and the outer diameter of the positioning cylinder is larger than the inner diameter of the lower end of the nozzle seat brick.

[0008] Furthermore, in the above-mentioned ladle nozzle packing device, the outer diameter of the positioning cylinder is 150mm-180mm, and the height of the positioning cylinder is 130mm-150mm.

[0009] Furthermore, in the above-mentioned ladle nozzle packing device, the thickness of the positioning cylinder is 10mm-15mm.

[0010] Furthermore, in the above-mentioned ladle nozzle packing device, two fixed pulleys are provided, and the two fixed pulleys are at the same height.

[0011] Furthermore, in the above-mentioned ladle nozzle packing device, the upper end of the positioning cylinder is connected to the packing tube by a welding block. The longitudinal section of the welding block is triangular, one right-angled side of the welding block is welded to the packing tube, and the other right-angled side of the welding block is welded to the upper end of the positioning cylinder.

[0012] Furthermore, in the above-mentioned ladle nozzle packing device, multiple welding blocks are evenly arranged along the circumference of the positioning cylinder.

[0013] Furthermore, in the above-mentioned ladle nozzle packing device, 3-4 welding blocks are provided.

[0014] Furthermore, in the above-mentioned ladle nozzle packing device, a packing platform is provided above the ladle nozzle. When the lower end of the packing tube is located inside the ladle nozzle, the upper end of the packing tube is 20mm-30mm higher than the packing platform.

[0015] Furthermore, in the above-mentioned ladle nozzle packing device, the height of the packing tube is 5400mm-5500mm.

[0016] Analysis shows that this utility model discloses a ladle nozzle filling device. By using this filling device to add diverting sand to the ladle nozzle, it can ensure that the amount of diverting sand filling accurately meets the process standards. After the filling is completed, the filling material in the nozzle forms a hill-shaped shape with a high center and low edges. This shape can make the sintered layer form a hill structure simultaneously, thereby making the diverting sand form a reasonable sintered layer-solid sand layer structure in the ladle nozzle, ensuring that the solid diverting sand flows out smoothly during the start-up process and improving the self-opening rate of the ladle nozzle. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. Wherein:

[0018] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0019] Figure 2 This is a schematic diagram of the assembly of the packing tube and the positioning cylinder according to an embodiment of the present invention.

[0020] Explanation of reference numerals in the attached diagram: 1. Fixed platform; 2. Fixed pulley; 3. Packing tube; 4. Wire rope; 5. Counterweight; 6. Positioning cylinder; 7. Welding block; 8. Packing port. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Various examples are provided by way of explanation of the present invention and not by way of limitation. In fact, those skilled in the art will recognize that modifications and variations can be made to the present invention without departing from the scope or spirit of the invention. For example, a feature shown or described as part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desirable that the present invention encompass such modifications and variations that fall within the scope of the appended claims and their equivalents.

[0022] In the description of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. The terms "connected," "linked," and "set up" used in this utility model should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a direct connection or an indirect connection through intermediate components; a wired connection, a radio connection, or a wireless communication signal connection. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0023] The accompanying drawings illustrate one or more examples of the present invention. The detailed description uses numerals and letters to refer to features in the drawings. Similar or analogous reference numerals in the drawings and description have been used to refer to similar or analogous parts of the present invention. As used herein, the terms “first,” “second,” and “third,” etc., are used interchangeably to distinguish one component from another and are not intended to indicate the location or importance of individual components.

[0024] like Figures 1 to 2 As shown, according to an embodiment of the present invention, a ladle nozzle packing device is provided, such as... Figure 1 As shown, the device includes a fixed platform 1, a fixed pulley 2, a packing tube 3, a steel wire rope 4, and a counterweight 5. The fixed pulley 2 is mounted on the fixed platform 1. Both ends of the steel wire rope 4 are located below the fixed platform 1. One end of the steel wire rope 4 is connected to the upper end of the packing tube 3, and the other end of the steel wire rope 4 passes around the fixed pulley 2 and is connected to the counterweight 5. The counterweight 5 is used to adjust the lifting height of the packing tube 3. A positioning cylinder 6 is fitted onto the lower part of the packing tube 3. When the operator pulls the packing tube 3, the packing tube 3 can be lowered. When the lower end of the packing tube 3 contacts the inner wall of the ladle nozzle, diversion sand can be added into the ladle nozzle through the packing tube 3.

[0025] Furthermore, the ladle nozzle has a nozzle seat brick, which is a hollow frustum structure with a large upper end and a small lower end. The lower end of the packing tube 3 and the lower end of the positioning cylinder 6 are on the same plane. The outer diameter of the positioning cylinder 6 is smaller than the inner diameter of the upper end of the nozzle seat brick, and the outer diameter of the positioning cylinder 6 is larger than the inner diameter of the lower end of the nozzle seat brick. This arrangement allows the lower end of the packing tube 3 to enter the inner cavity of the nozzle seat brick. After the positioning cylinder 6 contacts the inner wall of the nozzle seat brick, it ensures that the packing tube 3... The inner cavity of the ladle nozzle (the nozzle channel formed by the upper nozzle and the upper slide plate) is aligned with the filling material. During filling, the guiding sand will not be scattered on the upper surface of the nozzle seat brick. The actual amount of guiding sand added to the ladle nozzle meets the process requirements, ensuring that the height of the sintered layer formed by the guiding sand will not be reduced. The guiding sand can form a reasonable sintered layer-solid sand layer structure in the ladle nozzle. The solid sand layer is relatively thick, and the solid guiding sand can flow out smoothly after the nozzle is opened, which is conducive to the self-opening of the ladle nozzle.

[0026] Furthermore, the existing sprue seat brick has an inner diameter of 225mm at the top and 110mm at the bottom, and the positioning cylinder 6 has an outer diameter of 150mm-180mm. The positioning cylinder 6 has a height of 130mm-150mm and a thickness of 10mm-15mm.

[0027] Furthermore, two fixed pulleys 2 are provided, both of the same height, and there is a certain distance between them. The upper end of the stuffing tube 3 is provided with a stuffing port 8, which is a hollow frustum structure, with the upper end of the stuffing port 8 being the large end and the lower end being the small end.

[0028] Furthermore, such as Figure 2 As shown, the upper end of the positioning cylinder 6 is connected to the packing tube 3 via a welding block 7. The longitudinal section of the welding block 7 is triangular, with one right-angled side of the welding block 7 welded to the packing tube 3 and the other right-angled side welded to the upper end of the positioning cylinder 6. Multiple welding blocks 7 are evenly arranged along the circumference of the positioning cylinder 6. Preferably, 3-4 welding blocks 7 are provided. The packing tube 3 and the positioning cylinder 6 must be firmly welded together via the welding blocks 7, and the number of welding blocks 7 can be adjusted as needed. The positioning cylinder 6 acts as a counterweight at the bottom of the packing tube 3. During packing, the positioning cylinder 6 prevents the bottom of the packing tube 3 from shaking, ensuring that after packing is completed, the packing in the ladle nozzle forms a hill-like shape with a high center and low edges, which is beneficial for the ladle nozzle to open automatically.

[0029] Furthermore, a packing platform is installed above the ladle nozzle. The height of the packing pipe 3 is determined based on the ladle height and the height of the packing platform. When the lower end of the packing pipe 3 is inside the ladle nozzle, the upper end of the packing pipe 3 is 20mm-30mm higher than the packing platform to facilitate packing by workers. For a 70T ladle with 33 layers of 100mm thick ladle bricks, the preferred height of the packing pipe 3 is 5400mm-5500mm.

[0030] The method of filling the ladle nozzle with this packing device includes the following steps:

[0031] 1. Positioning preparation: Move the ladle car below the packing platform, pull down the packing tube 3 so that the positioning cylinder 6 at its bottom contacts the inner wall of the nozzle seat brick, and ensure that the packing tube 3 is aligned with the inner cavity of the ladle nozzle.

[0032] 2. Add diversion sand. Add the required amount of diversion sand from the top of the packing tube 3. The diversion sand flows into the ladle nozzle through the cavity of the packing tube 3, covering the neck of the ladle nozzle and forming a uniform hill-shaped accumulation.

[0033] 3. Reset and remove: After completing the packing operation, pull down the counterweight 5 to raise the packing tube 3 above the ladle nozzle, and drive the ladle car to the tapping station after the furnace.

[0034] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0035] A ladle nozzle filling device is disclosed. By using this filling device to add diverting sand to the ladle nozzle, it is possible to ensure that the amount of diverting sand filled accurately meets the process standards. After the filling is completed, a hill-shaped filling pattern with a high center and low edges is formed in the nozzle. This pattern allows the sintered layer to form a hill structure simultaneously, thereby enabling the diverting sand to form a reasonable sintered layer-solid sand layer structure in the ladle nozzle. This ensures that the solid diverting sand flows out smoothly during the start-up process and improves the self-opening rate of the ladle nozzle.

[0036] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A ladle nozzle packing device, characterized in that, It includes a fixed platform, fixed pulleys, stuffing pipes, wire ropes, and counterweights, among which, The fixed pulley is mounted on the fixed platform, and both ends of the steel wire rope are located below the fixed platform. One end of the steel wire rope is connected to the upper end of the packing tube, and the other end of the steel wire rope passes around the fixed pulley and is connected to the counterweight. The counterweight is used to adjust the lifting height of the packing tube. A positioning cylinder is fitted at the lower part of the packing tube; Pulling the packing tube lowers it, and when the lower end of the packing tube contacts the inner wall of the ladle nozzle, diversion sand can be added into the ladle nozzle through the packing tube.

2. The ladle nozzle packing device according to claim 1, characterized in that, The ladle nozzle has a nozzle seat brick, which is a hollow truncated cone. The upper end of the nozzle seat brick is the large end, and the lower end of the nozzle seat brick is the small end. The lower end of the packing tube and the lower end of the positioning cylinder are located on the same plane. The outer diameter of the positioning cylinder is smaller than the inner diameter of the upper end of the sprue seat brick, and the outer diameter of the positioning cylinder is larger than the inner diameter of the lower end of the sprue seat brick.

3. The ladle nozzle packing device according to claim 1, characterized in that, The outer diameter of the positioning cylinder is 150mm-180mm. The height of the positioning cylinder is 130mm-150mm.

4. The ladle nozzle packing device according to claim 1, characterized in that... The thickness of the positioning cylinder is 10mm-15mm.

5. The ladle nozzle packing device according to claim 1, characterized in that, There are two fixed pulleys, and the two fixed pulleys are at the same height.

6. The ladle nozzle packing device according to claim 1, characterized in that, The upper end of the positioning cylinder is connected to the packing tube via a welding block. The longitudinal section of the welding block is triangular. One right-angled side of the welding block is welded to the packing tube, and the other right-angled side of the welding block is welded to the upper end of the positioning cylinder.

7. The ladle nozzle packing device according to claim 6, characterized in that, The welding blocks are evenly arranged in multiple pieces along the circumference of the positioning cylinder.

8. The ladle nozzle packing device according to claim 7, characterized in that, The welding blocks are provided in 3-4 pieces.

9. The ladle nozzle packing device according to claim 1, characterized in that, A packing platform is provided above the ladle nozzle. When the lower end of the packing tube is inside the ladle nozzle, the upper end of the packing tube is 20mm-30mm higher than the packing platform.

10. The ladle nozzle packing device according to claim 1, characterized in that, The height of the packing tube is 5400mm-5500mm.

Images