Intelligent sand filling system for ladle nozzle

Abstract

The utility model relates to a kind of steel ladle water gap intelligent sand filling system, belong to metallurgical engineering field.It includes lifting device, feeding device, positioning device, machine vision device, intelligent control device, lifting device is connected with drainage tube, positioning device includes two-axis sliding table and clamping mechanism, radial positioning, horizontal adjustment are carried out to drainage tube;Machine vision device is used to observe, identify the relative position between the lower pipe of drainage tube and steel ladle water gap, steel ladle water gap state, photograph or video record and observe sand filling effect;Intelligent control device is used for data analysis, judgment, record and automatic control in the working process of overall system.It also includes rotating pipe to realize multi-station drainage conversion, weighing sensor to control sand amount.The utility model can replace artificial feeding, and accurately fill drainage sand into steel ladle water gap by intelligent means, ensure that molten steel can smoothly pass through steel ladle water gap when tapping, realize continuous casting automatic pouring.

Description

Technical Field

[0001] This utility model belongs to the field of metallurgical engineering and relates to an intelligent sand filling system for steel ladle nozzles. Background Technology

[0002] Sand filling at the ladle nozzle is a crucial operation in steel smelting. Constructing a dense isolation layer at the nozzle before pouring molten steel is of great significance in preventing the penetration and erosion of molten steel or slag, improving steel quality, and reducing the risk of pouring failure or interruption in continuous casting production. However, the sand filling method currently used in steel plants faces many technical problems that urgently need to be solved.

[0003] Currently, most steel mills use manual or electric lifting devices for the sand filling diversion pipe on the sand filling platform. After the molten steel ladle is transported to the designated location, workers must first carefully observe and confirm that there are no foreign objects such as steel slag at the nozzle. This process is not only time-consuming but also limited by the workers' observation angle and experience, potentially leading to missed inspections. Next, the lifting device is operated to lower the lower part of the diversion pipe to near the molten steel ladle nozzle, after which manual adjustment is required to align it. Because the positional accuracy of the molten steel ladle and diversion pipe is difficult to control precisely, workers need to repeatedly observe and adjust, which is not only inefficient but also prone to leakage or uneven filling of the diversion sand due to improper operation. When manually adding diversion sand to the upper funnel of the diversion pipe, the amount added also relies on the worker's experience, and it is difficult to accurately monitor the sand filling status at the nozzle in real time. This often requires multiple adjustments to the diversion pipe position and additional sand additions, severely impacting sand filling efficiency.

[0004] The method used by some steel mills, which involves manually throwing bagged guide sand to the sprue, presents even more significant problems. During the throwing process, the distribution of the guide sand is extremely uneven, making it difficult to form an effective isolation layer. Furthermore, the accuracy and force of the throwing are difficult to control, easily leading to waste of guide sand or failure to accurately reach the sprue.

[0005] Existing sand-pouring methods all require specialized personnel to operate, placing workers in harsh working environments with high temperatures and dust for extended periods. This significantly increases their risk of burns and other injuries. Furthermore, inconsistent skill levels among operators directly lead to unstable sand-pouring results and efficiency, consequently impacting the smooth progress of subsequent continuous casting processes. In addition, the current sand-pouring process lacks effective recording methods, making it difficult to trace the root cause of problems in case of anomalies, hindering process optimization and quality control.

[0006] Therefore, it is urgent to develop an intelligent sand filling system for molten steel tank nozzles using existing new technologies. Utility Model Content

[0007] In view of this, the purpose of this utility model is to provide an intelligent sand filling system for the steel ladle nozzle, which replaces the traditional manual feeding and other sand adding methods. Through intelligent means, the guiding sand is accurately poured into the steel ladle nozzle to ensure that the molten steel can pass smoothly through the steel ladle nozzle when it is tapped, thus realizing automatic casting of continuous casting.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A smart sand-filling system for the nozzle of a molten steel ladle includes a lifting device and a feeding device, which are sequentially arranged on an operating platform above the nozzle of the molten steel ladle; a diversion pipe is connected to the lifting device, and the diversion pipe moves up and down above the nozzle of the molten steel ladle through the lifting device.

[0010] The operating platform is also equipped with a positioning device, which is located at the sand filling station. The positioning device includes a two-axis slide and a clamping mechanism set on the two-axis slide. The clamping mechanism is used to clamp the drainage pipe that arrives at the sand filling station. The two-axis slide is used to drive the clamping mechanism and the drainage pipe clamped by the clamping mechanism to adjust the horizontal error so that the drainage pipe is aligned with the steel ladle nozzle.

[0011] The operating platform is also equipped with a machine vision device and an intelligent control device. The machine vision device is used to observe and identify the relative position between the lower inlet of the drainage pipe and the outlet of the molten steel ladle, observe whether there are foreign objects inside the outlet of the molten steel ladle, and take photos or videos of the outlet of the molten steel ladle and observe the sand filling effect. The intelligent control device is electrically connected to the machine vision device, the lifting device, the feeding device, and the positioning device. The intelligent control device uses the machine vision device to determine whether there are foreign objects inside the outlet of the molten steel ladle, and uses the machine vision device to determine whether the sand filling effect meets the requirements. The intelligent control device also controls the machine vision device to take photos or record videos, controls the lifting device to perform lifting or stopping operations, and controls the positioning device to move horizontally or clamp the drainage pipe.

[0012] Optionally, the lifting device includes a fixed pulley block and a wire winch mechanism mounted on the fixed pulley block. The wire rope of the wire winch mechanism passes around the fixed pulley block and is then connected to one end of the drain pipe. The bottom of the drain pipe passes through the operating platform and extends toward the molten steel tank inlet.

[0013] Optionally, the wire rope winch mechanism may also be equipped with an encoder or a master controller.

[0014] Optionally, the feeding device includes a steel structure platform mounted on the operating platform, a storage bin on the steel structure platform, a feeder below the storage bin, the feeder being connected to the diversion pipe, and diversion sand being fed into the diversion pipe through the feeder.

[0015] Optionally, the storage silo is equipped with a weighing sensor.

[0016] Optionally, the feeder is a vibrating feeder or a screw feeder.

[0017] Optionally, the feeder is provided with a rotary chute at the bottom, the lower end of the rotary chute extending into the guide pipe, and the feeder inputs guide sand into the guide pipe through the rotary chute; the rotary chute is provided with a drive device, the drive device is connected to the intelligent control, and the intelligent control device controls the drive device to drive the rotary chute to rotate, swinging the lower end of the pipe to the sand filling position.

[0018] The beneficial effects of this utility model are as follows:

[0019] This invention enables intelligent sand filling at the molten steel ladle nozzle. The system includes a lifting device, a positioning device, a rotating chute, a feeding device, a machine vision device, and an intelligent control device. It replaces traditional manual sand-addition methods, using intelligent technology to precisely fill the molten steel ladle nozzle with guiding sand, ensuring that the molten steel can smoothly pass through the sliding plate mechanism during tapping, achieving automatic pouring. This system not only improves the accuracy and efficiency of sand filling at the molten steel ladle nozzle but also reduces the labor intensity of manual operation and the risk of molten steel contamination.

[0020] This system combines machine vision observation and intelligent control technology. Through high-precision sensors and automatic control, it achieves precise positioning and automatic adjustment of the drainage pipe, ensuring uniform filling of the drainage sand. Utilizing image recognition and data analysis technology, it monitors the sand filling status in real time and automatically adjusts the sand addition amount. Simultaneously, it completely records data throughout the sand filling process, facilitating anomaly tracing and process improvement. This improves sand filling efficiency and accuracy, enhances the working environment for workers, and reduces the risks and costs of manual operation. It achieves unmanned operation in all stages, from observing the status of the molten steel tank nozzle, raising and lowering the drainage pipe and precisely positioning the nozzle, quantitatively adding drainage sand, analyzing the sand filling effect, and replenishing the nozzle.

[0021] This system also utilizes a lifting device to move the diversion pipe up and down. A positioning device located at the opening next to the sand-filling workstation allows for fine-tuning of the pipe's radial and horizontal positions, aligning the lower end of the pipe with the ladle's nozzle to ensure precise filling of the molten steel. Furthermore, a rotary chute connects the feeder and the diversion pipe. Rotating the lower end of this chute allows the feeder to input diversion sand into the diversion pipes at multiple sand-filling workstations, making the process more convenient.

[0022] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, wherein:

[0024] Figure 1 Cross-sectional view of the intelligent sand filling system for the steel ladle nozzle;

[0025] Figure 2 This is a top view of the intelligent sand filling system at the molten steel ladle nozzle (the intelligent control device and lifting device are not shown).

[0026] Figure label:

[0027] 1 Intelligent control device, 2 Machine vision device, 3 Lifting device, 3-1 Wire rope winch mechanism, 3-2 Fixed pulley block, 3-3 Drain pipe, 4 Feeding device, 4-1 Storage silo, 4-2 Weighing sensor, 4-3 Feeder, 5 Steel structure platform, 6 Operating platform, 7 Rotary chute, 8 Positioning device, 8-1 Two-axis slide, 8-2 Clamping mechanism, 9 Steel ladle nozzle. Detailed Implementation

[0028] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this utility model. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0029] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the present invention. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0030] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model 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. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0031] Please see Figures 1-2 This is an intelligent sand filling system for a steel ladle nozzle, comprising a lifting device 3 and a feeding device 4, which are sequentially arranged on the operating platform 6 above the steel ladle nozzle 9.

[0032] A diversion pipe 3-3 is connected to the lifting device 3. The lower end of the diversion pipe 3-3 is close to the steel tank inlet 9. The diversion pipe 3-3 moves up and down above the steel tank inlet 9 via the lifting device 3, lowering the diversion pipe 3-3 from outside the steel tank to the sand-filling working position. After sand filling is completed, the diversion pipe 3-3 is lifted out of the steel tank. When the diversion pipe 3-3 rises to the upper standby position, the steel tank can pass smoothly under the operating platform 6. When the diversion pipe 3-3 descends to the sand-filling working position, its lower end is located close to the steel tank inlet 9, ensuring that the diverted sand can be accurately poured into the steel tank inlet 9.

[0033] The operating platform 6 is also equipped with a positioning device 8, which is located next to the opening of the sand filling station. Each steel ladle outlet 9 is equipped with a corresponding positioning device 8. After the diversion pipe 3-3 is lowered to the working position, the positioning device 8 is first clamped by the clamping mechanism 8-2. Then, according to the detection and feedback of the spatial coordinates between the steel ladle outlet 9 and the lower pipe opening of the diversion pipe 3-3 by the machine vision device 2, the two-axis slide table 8-1 drives the clamping device to adjust the lower pipe opening of the diversion pipe 3-3 in the horizontal direction to within the allowable error range above the steel ladle outlet 9. The positioning device 8 includes a two-axis slide 8-1 and a clamping mechanism 8-2 mounted on the two-axis slide 8-1. The clamping mechanism 8-2 is used to clamp the drainage pipe 3-3 that has reached the sand filling station. The two-axis slide 8-1 is used to drive the clamping mechanism 8-2 and the drainage pipe 3-3 clamped by the clamping mechanism 8-2 to adjust the horizontal error so that the drainage pipe 3-3 is aligned with the steel ladle nozzle 9.

[0034] The operating platform 6 is also equipped with a machine vision device 2 and an intelligent control device 1. The machine vision device 2 uses a high-resolution camera to observe and identify the relative position between the lower opening of the drain pipe 3-3 and the molten steel ladle inlet 9 (by identifying the spatial coordinates of the molten steel ladle inlet 9 and the lower opening of the drain pipe 3-3 respectively), observe whether there are foreign objects inside the molten steel ladle inlet 9, and take photos or record videos of the state of the molten steel ladle inlet 9, as well as observe the sand-filling effect. The intelligent control device 1 is electrically connected to the machine vision device 2, the lifting device 3, the feeding device 4, and the positioning device 8, and is mainly used for data analysis, judgment, and recording during the system's operation, and for automated control. The intelligent control device 1 uses the machine vision device 2 to determine whether there are foreign objects inside the molten steel ladle inlet 9, and to determine whether the sand-filling effect meets the requirements. The intelligent control device 1 also controls the machine vision device 2 to take photos or record videos, controls the lifting device 3 to perform lifting or stopping operations, and controls the positioning device 8 to move horizontally or clamp the drain pipe 3-3.

[0035] The sand filling effect is observed after the sand filling of the steel ladle nozzle 9 is completed. If there are problems such as insufficient sand filling at the top of the steel ladle nozzle 9, the machine vision device 2 sends a signal that the sand filling does not meet the requirements to the intelligent control device 1. The intelligent control device 1 controls the sand filling operation to be supplemented again. After the supplementation is completed, the machine vision device 2 observes and analyzes the sand filling effect again until the requirements are met, and takes pictures or videos to record it.

[0036] Furthermore, the lifting device 3 includes a fixed pulley block 3-2 and a wire rope winch mechanism mounted on the fixed pulley block 3-2. The wire rope of the wire rope winch mechanism passes around the fixed pulley block 3-2 and is then connected to one end of the diversion pipe 3-3. The bottom of the diversion pipe 3-3 passes through the operating platform 6 and extends towards the molten steel tank inlet 9. The wire rope winch mechanism 3-1 is also equipped with an encoder or master controller. The rising, falling, and positioning of the diversion pipe 3-3 are detected by the encoder or master controller mounted on the wire rope winch mechanism 3-1, and the position information is fed back to the intelligent control device 1 for precise stopping operation.

[0037] The feeding device 4 is used to quantitatively supply the guiding sand in the storage silo 4-1 to the guiding pipe 3-3. Further, the feeding device 4 includes a steel structure platform 5 mounted on the operating platform 6, with the storage silo 4-1 mounted on the steel structure platform 5. A feeder 4-3 is located below the storage silo 4-1 and is connected to the guiding pipe 3-3, feeding the guiding sand into the guiding pipe 3-3 via the feeder 4-3. A weighing sensor 4-2 is installed on the storage silo 4-1 to ensure the sand feeding amount is within the control system's set range through subtraction metering. In some embodiments of this invention, the feeder 4-3 is preferably a vibrating feeder 4-3 or a screw feeder 4-3.

[0038] Furthermore, the feeder 4-3 is equipped with a rotary chute 7 at its lower part. The lower opening of the rotary chute 7 extends into the diversion pipe 3-3. The feeder 4-3 uses the rotary chute 7 to quantitatively input the diversion sand from the storage bin 4-1 into the diversion pipe 3-3. The rotary chute 7 is equipped with a drive device, which is connected to an intelligent control system. The intelligent control system 1 controls the drive device to drive the rotary chute 7 to rotate, swinging the lower opening to the sand filling position. When the diversion pipe 3-3 is in the sand filling position, the rotary chute 7 transports the diversion sand into the funnel at the upper part of the diversion pipe 3-3 and rotates to the standby position before the diversion pipe 3-3 rises.

[0039] Example 1

[0040] Based on the above system, in this embodiment, the weighing sensor 4-2 is used to support the storage bin 4-1, and the storage bin 4-1 is supported on the steel structure platform 5 by 3 or 4 sets of weighing sensors 4-2. The weighing sensor 4-2 can detect the weight of the storage bin 4-1 and the internal drainage sand in real time.

[0041] Example 2

[0042] In this embodiment, the molten steel tank of the overall system is a double-nozzle molten steel tank. According to the swing position of the lower pipe opening of the rotary chute 7, sand filling working position A, sand filling working position B, and standby position C are set. When the diversion pipe 3-3 descends to the lower working position to receive the diverted sand, the lower pipe opening of the rotary chute 7 rotates to the sand filling working position A or the sand filling working position B, so as to realize the operation between the two sand filling working positions. Before the sand filling operation is completed and the diversion pipe 3-3 rises, the lower pipe opening is swung to the standby position C to leave space for the diversion pipe 3-3 to rise.

[0043] For a steel ladle with one or more nozzles, the swing position of the rotary chute 77 can be set with the same number of stopping points and one standby position according to the number of nozzles. The swing position detection of the rotary chute 7 is achieved by an encoder or limit switch.

[0044] The intelligent sand-filling system of this invention enables automatic casting in continuous casting, and the specific steps are as follows:

[0045] S1. After the empty molten steel tanker arrives at the sand-filling position, the intelligent sand-filling system uses machine vision device 2 to observe and identify the spatial coordinates of the molten steel tank nozzle 9. Simultaneously, it checks for foreign objects inside nozzle 9. If an abnormality is detected, intelligent control device 1 indicates that the sand-filling operation cannot proceed normally and manual intervention is required. If nozzle 9 is in normal condition, the system automatically proceeds to the next step of the sand-filling process. At the same time, intelligent control device 1 controls machine vision device 2 to take photos or videos to record the state of nozzle 9 before sand filling.

[0046] S2, the intelligent control device 1 designates the water inlet of sand filling work position A or sand filling work position B to perform sand filling operation first, and the lifting device 3 of the corresponding work position drives the diversion pipe 3-3 to the lower sand filling work position through the wire rope winch mechanism 3-1 and the fixed pulley group 3-2. At this time, the lower pipe opening of the diversion pipe 3-3 is located close to the water inlet 9 of the steel tank.

[0047] S3, the clamping mechanism 8-2 of the positioning device 8 at the corresponding workstation closes, positioning the drain pipe 3-3 radially. At the same time, the machine vision device 2 detects the spatial position of the steel ladle nozzle 9 and the lower opening of the drain pipe 3-3, calculates the alignment error between the outlet and the pipe opening. If the error exceeds the specified value, the adjustment amount is fed back to the intelligent control device 1. The intelligent control device 1 controls the two-axis slide table 8-1 to translate in two directions, driving the clamping mechanism 8-2 on it to adjust the lower opening of the drain pipe 3-3 horizontally to within the allowable error range above the steel ladle nozzle 9.

[0048] S4, after completing the diversion pipe 3-3 position and sending a signal to prepare to receive diversion sand, under the drive of the drive device, the lower pipe opening of the rotary chute 7 rotates to the corresponding sand filling working position A or sand filling working position B, and sends a swing positioning signal after reaching the position. Then, the feeder 4-3 of the feeding device 4 starts to work and inputs diversion sand into the rotary chute 7. The weighing sensor 4-2 detects the weight of the storage bin 4-1 and the diversion sand inside it in real time. According to the reduction metering algorithm, the feeding stops when the output diversion sand quantity meets the set value of the intelligent control device 1.

[0049] Following the steps described above, the intelligent control device 1 operates each component in sequence to transport the diverted sand through the storage bin 4-1, feeder 4-3, rotary chute 7, and diversion pipe 3-3 to the corresponding steel ladle outlet 9, thereby realizing the sand filling operation at that outlet.

[0050] After the selected workstation's sprue is filled with sand, the machine vision device 2 detects the effect of the automatic sand filling. If problems such as insufficient sand filling at the top of the sprue 9 of the molten steel ladle are found, a signal indicating that the sand filling does not meet the requirements is sent to the intelligent control device 1. The intelligent control device 1, based on the supplementary sand filling amount fed back by the machine vision device 2, controls the feeder 4-3 to perform supplementary sand filling operations. After supplementation is completed, the machine vision device 2 observes and analyzes the sand filling effect again until the requirements are met, and records it with photos or videos.

[0051] S5, the rotating chute 7 swings to the standby position C, and at the same time the clamping mechanism 8-2 of the positioning device 8 opens. Then the lifting device 3 lifts the diversion pipe 3-3 to the upper standby position C, and the sand filling operation of the water inlet is completed.

[0052] S6, and then the intelligent control device 1 controls each component to complete the sand filling operation of another water inlet according to the above steps.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model 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 solution of this utility model without departing from the spirit and scope of this technical solution, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A smart sand-filling system for steel ladle nozzles, characterized in that: It includes a lifting device (3) and a feeding device (4), which are sequentially arranged on the operating platform (6) above the steel ladle nozzle (9); the lifting device (3) is connected to a diversion pipe (3-3), which moves up and down above the steel ladle nozzle (9) through the lifting device (3); The operating platform (6) is also equipped with a positioning device (8), which is located at the sand filling station. The positioning device (8) includes a two-axis slide (8-1) and a clamping mechanism (8-2) set on the two-axis slide (8-1). The clamping mechanism (8-2) is used to clamp the drainage pipe (3-3) that has reached the sand filling station. The two-axis slide (8-1) is used to drive the clamping mechanism (8-2) and the drainage pipe (3-3) clamped by the clamping mechanism (8-2) to adjust the horizontal error so that the drainage pipe (3-3) is aligned with the steel ladle nozzle (9). The operating platform (6) is also equipped with a machine vision device (2) and an intelligent control device (1). The machine vision device (2) is used to observe and identify the relative position between the lower pipe opening of the drainage pipe (3-3) and the steel tank outlet (9), observe whether there are foreign objects in the steel tank outlet (9), and take photos or record videos at the steel tank outlet (9) and observe the sand filling effect. The intelligent control device (1) is electrically connected to the machine vision device (2), the lifting device (3), the feeding device (4), and the positioning device (8). The intelligent control device (1) uses the machine vision device (2) to determine whether there are foreign objects in the steel tank outlet (9), and uses the machine vision device (2) to determine whether the sand filling effect meets the requirements. The intelligent control device (1) also controls the machine vision device (2) to take photos or record videos, and controls the lifting device (3) to perform lifting or stopping operations, and controls the positioning device (8) to move horizontally or clamp the drainage pipe (3-3).

2. The intelligent sand-filling system for steel ladle nozzles according to claim 1, characterized in that: The lifting device (3) includes a fixed pulley group (3-2) and a wire rope winch mechanism (3-1) set on the fixed pulley group (3-2). The wire rope of the wire rope winch mechanism (3-1) passes around the fixed pulley group (3-2) and is then connected to one end of the diversion pipe (3-3). The bottom of the diversion pipe (3-3) passes through the operating platform (6) and extends to the water outlet (9) of the molten steel tank.

3. The intelligent sand-filling system for steel ladle nozzles according to claim 2, characterized in that: The wire rope winch mechanism (3-1) is also equipped with an encoder or a master controller.

4. The intelligent sand-filling system for steel ladle nozzles according to claim 1, characterized in that: The feeding device (4) includes a steel structure platform (5) set on the operating platform (6), a storage bin (4-1) is provided on the steel structure platform (5), a feeder (4-3) is provided below the storage bin (4-1), the feeder (4-3) is connected to the diversion pipe (3-3), and diversion sand is input into the diversion pipe (3-3) through the feeder (4-3).

5. The intelligent sand-filling system for steel ladle nozzles according to claim 4, characterized in that: The storage bin (4-1) is equipped with a weighing sensor (4-2).

6. The intelligent sand-filling system for steel ladle nozzles according to claim 4, characterized in that: The feeder (4-3) is a vibrating feeder (4-3) or a screw feeder (4-3).

7. The intelligent sand-filling system for steel ladle nozzles according to claim 4, characterized in that: The feeder (4-3) is provided with a rotary chute (7) at the bottom. The lower end of the rotary chute (7) extends toward the diversion pipe (3-3). The feeder (4-3) inputs diversion sand into the diversion pipe (3-3) through the rotary chute (7). The rotary chute (7) is provided with a drive device. The drive device is connected to the intelligent control. The intelligent control device (1) controls the drive device to drive the rotary chute (7) to rotate and swing the lower end of the pipe to the sand filling position.

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